Title of Invention	"A PACKAGE COMPONENT INCLUDING A FORMED PLASTIC CONTAINER"
Abstract	A package component including a formed plastic container (12) defining a storage region (18), a container edge, and a sealing surface (20) around an entrance (22) to said region, characterized in that a plastic tab (24) is adjacent to said sealing surface (20) and has a tab edge that is adjacent said container edge and in that a frangible temporary connector (46) connects said tab (24) to said plastic container (12).

Title of Invention

"A PACKAGE COMPONENT INCLUDING A FORMED PLASTIC CONTAINER"

Abstract

A package component including a formed plastic container (12) defining a storage region (18), a container edge, and a sealing surface (20) around an entrance (22) to said region, characterized in that a plastic tab (24) is adjacent to said sealing surface (20) and has a tab edge that is adjacent said container edge and in that a frangible temporary connector (46) connects said tab (24) to said plastic container (12).

Full Text	The present invention relates a package component including a formed plastic container. The invention relates -to containers -for storingitems such as .shaving cartridges. Shaving cartridges are typically sold in plastic dispensers containing a plurality of shaving cartridges located in respective sections of $ie container. . It is known in the art of packaging snacks and condiments to have a rectangular formed plastic container generally in the shape of an open box with a peripheral rim, covered by a plastic foil sealed around the rim, and a pull tab which is then formed by a slitting knife shearing one comer of the rim diagonally such that the triangular tab-remains attached to the sealing foil with no appreciable space between the triangular tab and the adjacent portion of the rim. For example, such packages have been used to package snacks that have been available in the United -States under the trade designation "Phileas Fogg". Such prior art package is depicted in the accompanying Figures 1-2 labeled "prior art". Applicants understand the plastic con£a5ieT"100 is formed of a food-compatible thermoplastic with a rim 102 formed around the four sides (the rim being generally the same width on opposite sides, but of slightly different widths on adjacent sides), has a plastic covering film 104 sealed around the rim, the film being metallic-colored (believed to be by vacuum deposition) on the underside and printed with product information on the outside, and the pull tab 106 remaining adhered to the film when it is peeled back. Applicants have recognized that when the plastic film is peeled back from the plastic container but not completely removed therefrom and then let go, the film falls away from the position shown in Fig. 2 back to block the opening, and thus completely .lacks any "deadfold" capability to leave the opening' accessible as that term is discussed hereinbelow. It is known, however, that plastic food pack films have moisture and gas barrier properties to protect the product from becoming stale. The acknowledged prior art also includes" bendable metal foil used to cover plastic containers for party-sized portions of butter, or similar packages for condiments or preserves such as have been available in the United States under the name Knotts Berry Farm Foods, Inc. (Placentia, California); these containers also have a corner pull tab that has been provided by slitting a rim portion. The laminate cover foil is understood to be thin metal foil coated outside with plastic (with printed graphics) and having a heat seal adhesive under layer. The plastic coating merely provides moisture and gas barrier properties. The foii of these containers can be peeled back but must be made of metal so as ţo permit being permanently deformed. The acknowledged prior art further includes a polyester coated paper layer with a sealant under layer such as hoţ melt adhesive, such ,as used in 6-pack individual serving yogurt containers such as believed to have been available in the United States under the name Yoplait. The polyester helps one-piece removal. The paper has some minimal ability to remain folded back, but lacks moisture barrier properties because it is absorbent. French Patent 2,714,031 discloses a receptacle for foodsruffs with means for ensuring appropriate orientation of material within the receptacle. A cover film is provided. European Patent EP-A-0548785 is concerned with packaging photographic film to protect the packaged contents from moisture, dirt and light. A lid sealably encloses-the package and may be a metallic foii to impart deadfold •fe characteristics or may be a non-foil laminate to provide a moisture barrier. German Patent 19751428 discloses a container sealed with a film with a tear tab created at a flange area by incisions or perforations. According to the present invention, there is provided a sealed package comprising an entrance to said region, said container having a bottom wall and at least two opposed side walls each of which has retaining structure integrally formed thereon and protruding inward therefrom, said retaining structure being movable outward to permit entry of a cartridge into said storage region and to thereafter move inward to retain said cartridge in said region, a shaving cartridge contained within said storage region and retained by said retaining structure, said cartridge ,' including a plastic housing and a plurality of blades, and a removable film that is sealed to said sealing surface and covets said entrance. According to a further aspect of the invention, there is provided a package comprising a formed plastic container defining a storage region defined by a bottom wall and side walls extending upward from said bottom wall, said container having an entrance to said storage region, said container having a length and a width and a container longitudinal axis along said lengttf, at least one of said side walls of the container being a major longitudinal side wall extending along said container longitudinal axis, at least one of said side walls being a minor side wall extending generally transverse said container longitudinal axis, a shaving cartridge in said storage region in position for connection to a handle, said cartridge including a plastic housing and a plurality of blades, said shaving cartridge having a length and a width and a cartridge longitudinal axis along said length that is aligned with said container longitudinal axis, and a plastic lip formed adjacent to said major longitudinal side wall and extending integral with said major longitudinal side wall at said entrance to space a user's fmger or thumb from said entrance during removal of said cartridge from said region. According to a further aspect of the invention, there is provided a sealed package comprising a formed plastic container defining a storage region and having a sealing surface around an entrance to said region, a shaving cartridge in said storage region in position for connection to a handle, said cartridge including a plastic housing and a plurality of blades, and a removable film that is sealed to said sealing surface and covers said entrance, said film having comprising at least one plastic layer having deadfold characteristics. According to a further aspect of the invention, there is provided a sealed package comprising a formed plastic container defining a storage region and having a sealing surface around an entrance to said region, said container having a first confronting edge surface along a portion thereof, said container having an outwardly directed principal surface, a stored unit in said storage region, said unit being removable as an entire unit, a removable film that is sealed to said sealing surface and covers said entrance, and a plastic tab that is spaced by a gap from said formed plastic container and is attached to a portion of said film extending beyond said sealing surface for gripping by a user and initiating peeling of said film from said sealing surface, said tab having a second confronting edge surface along a portion thereof and facing said first confronting edge surface, said gap being defined , by said confronting edge surfaces, said gap extending along said confronting surfaces, said gap also extending in the direction parallel to an axis constructed from said principal surface of said container to a surface that is parallel with said film. According to a furthqr aspect of the invention, there is provided a sealed package comprising a formed plastic container defining a storage region defmed by a bottom wall and side walls having side surfaces, and having a sealing surface around an entrance to said region, a stored unit in said storage region, said unit being removable as an entire unit, retaining structure formed on the inside of said container and extending inward from said side surfaces, said retaining structure retaining said stored unit in a desired position in said container, said retaining structure being movable outward to permit entry of said stored unit into said storage region and to thereafter move inward to retain said stored unit in said region, and a removable film that is sealed to said sealing surface and covers said entrance. According to a further aspect of the invention, there is provided a package component comprising a formed plastic container defining a storage region, a container edge, and a sealing surface .around an entrance to said region, a plastic tab that is adjacent to said sealing surface and has a tab edge that is adjacent said container edge, and a first temporary connector that connects said tab to said plastic container, and wherein said first temporary connector has a first portion that extends transversely from said tab edge," a second portion that extends from said first portion generally parallel to said container edge and said tab edge, and a third portion that extends transversely from said container edge to said second portion, whereby said first temporary connector can be trimmed by a single cut made parallel to said container edge and tab edge. According to a further aspect of the invention, there is provided a method of making a sealed package comprising providing a formed plastic container defining a storage region and a sealing surface around an entrance to said region, said storage region being defmed by at least two opposed side walls each of which has retaining structure protruding inward therefrom, placing a shaving cartridge in said storage region, said shaving cartridge having a plastic housing and a plurality of blades, retaining said cartridge in said storage region by contacting said retaining structure with the shaving cartridge, said retaining structure moving outward to permit entry of a cartridge into said storage region and to thereafter moving inward to retain said cartridge in said region, and sealing a removable film to said sealing surface so as to cover said entrance. According to the present invention, there is provided a method of making a sealed package comprising providing a formed plastic container defîning a storage region and a sealing surface around an entrance to said region, placing a unit in said storage region, said unit being removable as an entire unit, sealing a removable film to said sealing surface so as to cover said entrance, and attaching a plastic tab to a portion of said film extending beyond said sealing surface for initiating peeling of said film from said sealing surface, said plastic tab being provided in a first position adjacent to said sealing surface, connecting said plastic tab to said container with a temporary connector, and after said steps of sealing and attaching, disconnecting said temporary connector and leaving said tab in said first position adjacent said sealing surface. According to the present invention, there is provided a method of providing a shaving cartridge on a răzor comprising providing a sealed package including a formed plastic container containing a shaving cartridge in a storage region and a removable film sealed to a sealing surface of said container around an entrance to said storage region, said cartridge including a plastic housing and a plurality of blades, said cartridge being retained by retaining structure formed on a wall of the container, peeling said film from said sealing surface to provide access to said shaving cartridge, attaching said cartridge to a handle, and disengaging said cartridge from the--retaining structure. According to the present invention, there is provided a method of providing a shaving cartridge on a răzor comprising providing a sealed package including a formed plastic container containing a shaving cartridge in a storage region and a removable film sealed to a sealing surface of said container around an entrance to said storage region, said film comprising a plurality of plastic layers formed without a structural metal layer, said cartridge including a plastic housing and a plurality of blades, peeling said film from said sealing surface to provide access to said shaving cartridge, and attaching said cartridge to a handle, wherein said peeling includes, upon removal of a peeling force, said film remaining attached to said sealing surface and folded back to not obstruct said attaching. In one aspect, a sealed package includes a formed plastic container, a shaving cartridge (or other stored unit) in a storage region in the container, and a removable film that covers and is sealed to a sealing surface around an entrance to the storage region. Side walls of the container have retaining structure that protrudes inward and retains the shaving cartridge (or other stored unit). % In another aspect, a sealed package contains a shaving cartridge in a formed plastic container that is sealed by a removable film. The container has a lip adjacent to and extending from a side wall of the container at an entrance the storage region to space a user's finger or thumb from the entrance during removal of the cartridge. In another aspect, a sealed package contains a shaving cartridge in a formed plastic container that is sealed by a removable film. The film has deadfold characteristics which facilitate removal of the cartridge when the film is still partially connected at the rear of the container. In another ^aspect, a sealed package contains a stored unit in a formed plastic container that is sealed by a removable film. A plastic tab is attached to a portion of the film extending beyond the sealing surface of the container to iniţiate peeling of the film from the sealing surface. The plastic tab is spaced from the formed plastic container by a gap. Particular embodiments of the invention may include one or more of the following features. The blades of the cartridge face away from the entrance to the storage region. The container nas a ramp structure that leads from the lip on the container to the cartridge in the storage region. The container has support members on the bottom wall that support the cartridge in a desired orientation; the support members have a curved surface that matches the upper surface profile of the cartridge. The cartridge retaining structures on the side walls of the container have inclined surfaces facing the entrance and the bottom wall. The container is transparent. The container has a pluraliry of protruding finger gripping ridges on one or more exterior surfaces; the ridges on some surfaces have an indented profile to accommodate a user's fingers. The plastic tab connected to the removable fihn has a gripping ridge extending from a surface. The plastic tab is located at a cutout , region at the lip of the container. The tab has the shape of a half moon. The removable film is more flexible than the walls of the formed plastic container. The fihn is adhered to the container with a removal force greater than 1.5 Newtons (preferably 3-5 Newtons). The film carries printing on an internai surface between fihn layers. The fihn is heat sealed or radio frequency (RF) sealed to the sealing surface of the container. In another aspect, the invention features, in general, a package component including a formed plastic container defining a storage region and a sealing surface around an entrance to the region, a plastic tab that is adjacent to the sealing surface, and a temporary connector that connects the tab to the plastic container. Particular embodiments of the package component may have one or more of the followmg features. The temporary connector has a first portion that extends transversely from a tab edge, a second portion that extends from the first portion generally parallel to the container edge and the tab edge, and a third portion that extends transversely from the container edge to the second portion, resulting in a hoop shape connector. The temporary connector is molded at the same time as the formed plastic container and the tab. Alternatively, the temporary connector could be a frangible bridge portion of plastic. In other aspects, the invention features, in general, methods of % making the sealed packages as described and methods of using the sealed packages as described. 3» Embodiments of the invention may include 'one or more of the following advantages. The sealed package protects the cartridge -from "moisture, shaving preparation products such as soaps, foams and gels, and cleaning agents when the package is stored in a shower or bath tub area prior to usage. The hoop bridge members can be easily severed with a single' cut along the outside of the package. The inclined surfaces guide the cartridge to the desired position when loaded into the storage region. The support members and retaining structure hold the cartridge in a desired position for attachment to a handle. The plastic tabs provide a good gripping member for initiating peeling. The deadfold characteristics prevent a partially removed foil from interfering with connection of the handle to the cartridge. The ramp structure guides the handle to the connecting portion of the cartridge contained in the container. The lip protects the user's fingers or thumb from the cutting edges of the blade during removal of the cartridge from the Accordingly, the present invention relates to a package component including a formed plastic container (12) defining a storage region (18), a container edge, and a sealing surface (20) around an entrance (22) to said region, characterized in that a plastic tab (24) is adjacent to said sealing surface (20) and has a tab edge that is adjacent said container edge and in that a frangible temporary connector (46) connects said tab (24) to said plastic container (12). A sealed package including a formed plastic container (12) defining a storage region (18), a container edge, a sealing surface (20) around an entrance (22) to said region, and a removable sheet (14) sealed to the sealing surface (20) and covering said entrance (22), wherein a plastic tab (24) is adjacent to said sealing surface (20) and has a tab edge that is adjacent said container edge (28), in that a frangible temporary-connector (46) connects said tab (24) to said plastic container (12) and in that the removable sheet is sealed to the sealing surface (20) and to the tab (24). A method of making a sealed package, wherein by the steps of providing a formed plastic container defining a storage region and a sealing surface around an entrance to said region, placing a unit in said storage region, said unit being removable as an entire unit, seating a removable film to said sealing surface so as to cover said entrance, and attaching a plastic tab to a portion of said film extending beyond said sealing surface for initiating peeling of said film from said sealing surface, said plastic tab being provided in a first position adjacent to said sealing surface, connecting said plastic tab to said container with a temporary connector, and, after said steps of sealing and attaching, disconnecting said temporary connector and leaving said tab in said first position adjacent said sealing surface. Other advantages and features of the invention will be apparent from the following detailed description of th.e embodiments of the invention and from the claims. Fig. 1 is a perspective view of a sealed package, in a partially opened condition with a shaving cartridge in the package. Fig. 2 is a perspective view of a formed plastic container of the Fig. 1 package. Fig. 3 is a sectional view, taken at 3-3 of Fig. 2, of the Fig. 2 plastic container. Fig-4 is a top view of the Fig. 2 plastic container. Fig. 5 is a front elevation of the Fig. 2 plastic container. Fig. 6 is a rear elevation of the Fig. 2 plastic container. Fig. 7 is a bottom view of the Fig. 2 plastic container. Fig. 8 is a partial sectional view, taken at 8-8 of Fig. 4, showing a connecting bridge structure of the Fig..4 container. . Fig. 9 is a partial plan view showing an alternative to the bridge structure. Figs. 10-11 Fig. 12 shows the layered structura of the reraovable film of the Fig. l package. Figs. 13-14 shows a handle being connected to a răzor cartridge contained in the Fig. l package. Fig. 15 shows an opened cover sheet of the Fig. 3 package remaining in a stable first exemplary peeled back condition; and Fig. 16 shows an opened cover sheet of the Fig. 3 package remaining * in a stable second exemplary peeled back condition. ^.eferring to Fig. l there is shown sealed package 10 including ' formed plastic container 12, cover sheet 14, and shaving cartridge 16 stored inside container 12 in storage region 18. Fig. 2 shows container 12 prior to attachment of cover sheet 14. Container 12 has a sealing surface 20 surrounding the entrance 22 to storage region 18, and cover sheet 14 is sealed to sealing surface 20. Plastic tabs 24 (only one is shown in Fig. 1) are attached to an undersurface at two corners of cover sheet 14. Plastic tabs 24 are used to iniţiate peeling of sheet 14. Prior to peeling, plastic tabs 24 are located in cutaway porţions 26 (Fig. 1) that are located at the ends of lip 28, which extends along one side of container 12. As can be seen from Fig. 2, there is a curved gap 29 between tab 24 and lip 28. Referring to Figs. l through 7, container 12 has finger gripping ridges 30 on the two ends (Figs. l, 2 and 7) and relieved portions 32 providing vertical gripping portions 34 on front surface 35 (Figs. l, 2, 5 and 7) and relieved portions 36 providing gripping ridges 38 on rear surface 40 (Figs. 6 and 7). As can perhaps best be seen from the bottom view in Fig. 7, the end gripping ridges 30 extend further outward than the middle gripping ridges 30 such that the outermost surfaces of the gripping ridges nave an overall indented profile to better accommodate the user's fîngers. Figs. 2 and 4 show a plastic container 12 prior to filling with shaving cartridge 16 and sealing sheet 14 thereover. At this stage in the manufacture, plastic tabs 24 are part of container 12 and connected thereto by internai bridge members 46, which are best shown in Figs. 4 and 8. Bridge members 46 are thin, frangible members that are strong enough to hold tabs 24 in place during handling prior to sealing, but weak enough to easily break when a user lifts a tab 24 to initiate peeling-af-cover 14. (The lips could be relieved mechanically or at least partially severed to provide alternative bridge members). Tabs 24 have circumferential ridges 25 at the outer edges to facilitate gripping by a user's finger. (Figs. 5, 6 and 7). Referring to Figs. 1-4, it is seen that lip 28 is connected to side wall 48 of the container by an angled ramp structure 50 that leads to cartridge connecting structure 52 (Fig. 1) of cartridge 16. A suitable cartridge 16 is described in U.S.S.N. 09/066,499, fîled April 24, 1998, (hereby incorporated by reference). U.S. Design Patent D407,851 describes a handle that mates with cartridge 16. During connection of a răzor handle (Fig. 13) to cartridge 16, the c'onnecting end of the handle is brought over lip 28, and ramp 50 tends to guide the end of the handle into connecting structure 52 (Fig. 1). Upon connection of cartridge 16, the handle is retracted, and cartridge 16 is removed from container 12. Lip 28 protects the user's thumb and fingers from being cut by the blades of cartridge 16 during retraction from container 12. Referring to Figs. 3 and 4 it is seen that container 12 has two supporting members 51, which have curved, concave upper surfaces 53 matching 4 the pro file of the top surface of the blade unit of cartridge 16 in order to support cartridge 16 in the desired position. Supporting members 51 support the edge portions of cartridge 16 outside of the blades of cartridge 16. When stored in container 12, the cutting edges of the blades face downward. Detents 54, 56 protrude inward from respective side walls 48, 58. Both detents 54, 56 have upper inclined surfaces 60 facing entrance 22 and lower inclined surfaces 62 facing bottom wall 64. As the cartridge is loaded into container 12, the cartridge slightly deforms the container walls as it moves over inclined surfaces 60 and snaps past detents 54, 56. The cartridge also slightly deforms the container walls as the cartridge moves past inclined surfaces 62 during removal from the container 12. Detents 54 hold the guard portion of cartridge 16 down, and detents 56 hold the cap portion of the răzor cartridge down. In manufacture, container 12 is injection molded from polypropylene. Other materials that can be used for container 12 include polystyrene (particularly crystalline polystyrene, high impact polystyrene (HIPS) or medium impact polystyrene (MIPS)), polycarbonate, acrylonitrile butadiene styrene (ABS), Nylon, and SÂN. In using materials other than polypropylene, one skilled in the art would select an appropriate sealing layer material for sealing layer 118 (shown in Fig. 12 and discussed below). After forming container 12, a cartridge 16 is loaded into a container 12 with the blade unit snapping beyond detents 54, 56 and resting on upper surface 53 in a desired connecting position with cartridge connecting structure 52 adjacent to ranip 50 near lip 28. Then cover sheet 14 is sealed to upper sealing surface 20 and to the upper surfaces of plastic tabs 24 by heat welding. Altematively, radio frequency sealing could be employed. Container 12 is made from transparent plastic to permit visual inspection of the cartridges therein. Cover sheet 14 is printable, and can carry instructions for opening and use of a cartridge. Cover sheet 14 is made of a laminate as shown in Fig. 5 (not to scale). The laminate comprises 0.48 mii thick (0.012 mm, 48 gauge) PET upper layer 112 (which is reverse printed), 0.50 mii thick (0.013 mm, 50 gauge, altematively referred to as "7.5 lbs./ream") polyethylene (preferably LDPE) layer 114 thereunder (which is preferably white for opacity, but could altematively be transparent), 1.15 mii thick (0.029 mm, 115 gauge) oriented high density polyethylene layer (HDPE) 116 thereunder, 0.1 mii thick (approximately) (also referred to as about "2 lbs./ream") polyester-urethane adhesive layer 117 thereunder, and 1.25 mii thick (0.32 mm) coextruded LDPE-EVA (28%) lower sealing layer 118 thereunder, the lower EV A portion of which heat bonds to container 12. In sheet 14, the HDPE layer, and to a lesser extent the LDPE layer, provide moisture barrier properties and deadfold characteristics. PET provides bulk and clarity and protection for the printing on its lower surface. PET also provides structural integrity for the laminate so as to avoid tearing and provide one-piece removal of the laminate. PET is selected that preferably withstands an accelerated testing regime"dTâ'100°F hoţ water bath for 24 hours without delamination. The polyethylene layer (preferably LDPE) acts as a bonding layer to join the HDPE layer and the PET layer. The PET is chemically primed for use with the LDPE which is applied hoţ (about 600°F) as the bonding layer between PET and HDPE. The polyethylene layer (preferably LDPE) is preferably opaque, in particular white, to provide a background color for the printing, and provides opacity to present an aesthetically more uniform appearance between regions that are heat-affected by sealing and those regions further frorn the sealing surface. The polyester-urethane layer 117, whlch is very thin and less then l mii, preferably only about 0.1 mii, acts as a bonding layer to join the HDPE layer 116 and the LDPE-EVA sealing layer 118. The LDPE-EVA of layer 118 is particularly suited for providing a seal to polypropylene in container 12. It is understood that the amount of E VA in the sealing layer 118 can be varied depending on the material of container 12. It is further understood that if using radio frequency or ultrasonic sealing, it would be possible to omit a distinct lower sealing layer 118. The sealing layer 118 is ' preferably not thicker than 1.25 mii or else its bulk may outstrip the deadfold capability of the HDPE layer to remain peeled back. "Deadfold" characteristics for the laminate are provided by the LDPE and HDPE layers, primarily the HDPE layer. The deadfold characteristics are such that when cover sheet 14 is peeled open with a portion still attached to the container 12, and then released by the user's hand, sheet 14 remains folded back or bended back after opening, as is shown in Figs. 13-16, to permit easy access to the cartridge. In the case of stored articles that could be accessed by a user's hands, the deadfold characteristic is such that there is substantially unobstructed access to a digit of the hand while accessing the article inside. In general, as is shown in Fig. 16, sufficient deadfold results when the angle between the removed portion and sealing surface 22 is greater than 30° and most preferably greater than 45° (schematically depicted in dotted line positions). Viewed another way, as shown for example in Fig. 15 or 16, sufficient deadfold results in the removed portion of the cover sheet remaining behind a position to expose at least halfway the area of the entrance to the container to permit substantially unimpeded access to a stored object. Preferably, as is shown in Fig. 15, the removed portion of the cover sheet generally remains behind a midline through the container half-way between side surfaces. In particular, cover-sheet 14 remains folded back sufficiently such that the handle is substantially unobstructed while connecting to the cartridge, and the cartridge can be removed without a substanţial impediment. The moisture vapor barrier properties are provided by the LDPE and HDPE layers, primarily the HDPE layer. The moisture barrier property of the sheet can be expressed in terms of the Moisture Vapor Transmission Rate (MVTR) being iess than or equal to about 0.16 gm of water per 100 square inches per 24 hours, under conditions of 100°F (37.8°C) and 90% relative humidity. The~iiseof the HDPE layer together with the LDPE layer advantageously provides the desired combination of deadfold characteristics and moisture barrier properties. Further, the cover sheet is improved by the use of the LDPE layer being sandwiched between an outer PET layer and the HDPE layer to give the additional beneflt of protecting the film integrity, such as the resistance to tearing and integrity of the printing. The plastic sheet structure of cover 14, rather than metal foii, is preferred because it meets EAS requirements. In an EAS system, small tags (which comrnonly contain metal inside them) on the products are deactivated at time of payment so as to not set off an alarm when a paying customer leaves the store. If metal foii were used on a package containing a shaving cartridge, the combination of metal foii and metal blades in close proximity could interfere with proper functioning of the EAS tag. Cover sheet 14 maintains structural integrity and does not delaminate, does not tear when being removed (i.e., is removable in one piece), and does not degrade in the presence of water and household cleaning agents (which, e.g., might be used in a bath tub) or shaving preparation products, protects articles stored therein from moisture and cleaning agents, has desired deadfold characteristics for ease of product removal, is printable, and does not interfere with EAS systems. Cover sheet 14 is adhered to container 12 to have a predetermined iniţial peel force. Peel force is determined by supporting container 12 such that cover sheet 14 is in a vertical plane with the corner tab being directed downward, and a diagonal from that corner to the opposite corner being aligned vertically. Container 12 is maintained in this position by a'fixture, while the tab at the lower corner is connected to a force versus distance measurement machine (available under the Instron trade designation) and pulled upward by the machine. The resulting distance versus force graph typically has a single peak, being the iniţial peel force of interest, of about 3-5 lb.(13.6-22.7N) at sealing temperatures from 160°C - 215°C. The preferred sealing temperature is about 175°C. In use, a user bends plastic tabs 24 to break bridges 46 and then pul back along. the surface of the cover sheet to iniţiate peeLing. The user can grip the gripping ridges 30 at the two ends of the container or altematively grip the ridges 34, 38 at the front and the back. The user then connects the handle (not shown) te cartridge connecţing_structure 52, and removes cartridge 16. Detents 56 act as a pivot as cartridge 16 is removed. If the front and the back ridges 34, 38 are gripped by the user, lip 28 protects the user's thumb or fingers from being cut by the blades during removal of the cartridge. Other ernbodiments of the invention are withifi the scope of the claims. For example, Fig. 9 (describing the preferred embodiment) shows the use of hoops 100 that extend outward from tabs 24 and the side of container 12 to provide a temporary connecting structure. After eover sheet nas been sealed to container 12 and tabs 24, hoops 100 can each be trimmed with a single cut parallel to the sides of the container 12 or edge of lip 28, In addition, tabs 24 and containei can be made from the same material or different material, and the temporary * connectors, e.g., hoops 100, could be made of the same or different material. Tabs could be made of elastomeric material to provide a better grip surface. Besides angled detents 54, 56, other protruding structure could be used to hold a cartridge in a desired position. Cover sheet 14 could, in some applications, be made of metal foii, which will have the desired deadfold characteristics. WE CLAIM: 1. A package component including a formed plastic container (12) defining a storage region (18), a container edge, and a sealing surface (20) around an entrance (22) to said region, characterized in that a plastic tab (24) is adjacent to said sealing surface (20) and has a tab edge that is adjacent said container edge and in that a frangible temporary connector (46) connects said tab (24) to said plastic container (12). 2. A package component as claimed in claim 1, wherein said tab edge is in line with said container edge. 3. A package component as claimed in claim 1 or claim 2, wherein said temporary connector is molded at the same time a said formed plastic container (12) and said tab (24). 4. A package component as claimed in any of claims 1 to 3, wherein said container has a bottom wall (64) and side walls (48) extending upward from said bottom wall (64) and defining said storage region (18), and wherein a lip (28) is adjacent to and extends from a first said side wall at said entrance, said lip having a cutout portion (26) at an end of said lip, and wherein said tab (24) is located at said cutout portion. 5. A sealed package including a formed plastic container (12) defining a storage region (18), a container edge, a sealing surface (20) around an entrance (22) to said region, and a removable sheet (14) sealed to the sealing surface (20) and covering said entrance (22), wherein a plastic tab (24) is adjacent to said sealing surface (20) and has a tab edge that is adjacent said container edge (28), in that a frangible temporary connector (46) connects said tab (24) to said plastic container (12) and in that the removable sheet is sealed to the sealing surface (20) and to the tab (24). 6. A sealed package as claimed in claim 5, wherein a first temporary connector (100) connects said tab (24) to said plastic container (12) and wherein said first temporary connector (100) has a first portion that extends transversely from said tab edge, a second portion that extends from said first portion generally parallel to said container edge and said tab edge, and a third portion that extends transversely from said container edge to said second portion, whereby said first temporary connector (100) can be trimmed by a single cut made parallel to said container edge and tab edge. 7. A sealed package as claimed in claim 6, wherein said temporary connector is molded at the same time as said formed plastic container (12) and said tab (24). 8. A sealed package as claimed in claim 6 or claim 7, wherein said container has a bottom wall (64) and side walls (48) extending upward from said bottom wall (64) and defining said storage region (18), and wherein a lip (28) is adjacent to and extends from a first said side wall at said entrance, said lip having a cutout portion (26) at an end of said lip, and wherein said tab (24) is located at said cutout portion. 9. A sealed package as claimed in claim 6, wherein a second temporary connector connects said tab to said plastic container. 10. A sealed package as claimed in claim 9, wherein said first and second temporary connectors are molded at the same time as said formed plastic container and said tab. 11. A sealed package as claimed in claim 5, wherein there is an interface between said tab and said container, and a frangible plastic bridge portion (46) is located at a discrete location along said interface. 12. A sealed package as claimed in claim 11, wherein said frangible bridge portion (46) extends along at least a majority of said interface. 13. A sealed package as claimed in any of claims 5 to 12, wherein said tab (24) has a gripping ridge (25) extending from a surface. 14. A sealed package as claimed in claim 8, wherein said container is sized to store a shaving cartridge (16) and includes a ramp structure (50) connecting said lip (28) to a said side wall (48) and leading to said cartridge in said region. 15. A method of making a sealed package, wherein by the steps of providing a formed plastic container defining a storage region and a sealing surface around an entrance to said region, placing a unit in said storage region, said unit being removable as an entire unit, seating a removable film to said sealing surface so as to cover said entrance, and attaching a plastic tab to a portion of said film extending beyond said sealing surface for initiating peeling of said film from said sealing surface, said plastic tab being provided in a first position adjacent to said sealing surface, connecting said plastic tab to said container with a temporary connector, and, after said steps of sealing and attaching, disconnecting said temporary connector and leaving said tab in said first position adjacent said sealing surface. 16. A method as claimed in claim 15, wherein said attaching comprises sealing said tab to said portion of said film extending beyond said sealing surface during the same operation in which said film is sealed to said sealing surface. 17. A method as claimed in claim 15 or claim 16, wherein said temporary connector is made of plastic, and said providing includes forming said plastic tab and temporary connector in the same operation as forming said plastic container. 18. A method as claimed in claim 17, wherein said temporary connector is a frangible bridge portion, and said disconnecting includes breaking said frangible bridge portion. 19. A package components substantially as herein described with reference to the accompanying drawings. 20. A sealed package substantially as herein described with reference to the accompanying drawings. 21. A method of making a sealed package substantially as herein described.

Full Text

The present invention relates a package component including a formed plastic container.
The invention relates -to containers -for storingitems such as .shaving
cartridges.
Shaving cartridges are typically sold in plastic dispensers containing a plurality of shaving cartridges located in respective sections of $ie container.
. It is known in the art of packaging snacks and condiments to have a rectangular formed plastic container generally in the shape of an open box with a peripheral rim, covered by a plastic foil sealed around the rim, and a pull tab which is then formed by a slitting knife shearing one comer of the rim diagonally such that the triangular tab-remains attached to the sealing foil with no appreciable space between the triangular tab and the adjacent portion of the rim. For example, such packages have been used to package snacks that have been available in the United -States under the trade designation "Phileas Fogg". Such prior art package is depicted in the accompanying Figures 1-2 labeled "prior art". Applicants understand the plastic con£a5ieT"100 is formed of a food-compatible thermoplastic with a rim 102 formed around the four sides (the rim being generally the same width on opposite sides, but of slightly different widths on adjacent sides), has a plastic covering film 104 sealed around the rim, the film being metallic-colored (believed to be by vacuum deposition) on the underside and printed with product information on the outside, and the pull tab 106 remaining adhered to the film when it is peeled back. Applicants have recognized that when the plastic film is peeled back from the plastic container but not completely removed therefrom and then let go, the film falls away from the position shown in Fig. 2 back to block the opening, and thus completely .lacks any "deadfold" capability to leave the opening' accessible as that term is discussed hereinbelow. It is known, however, that plastic food pack films have moisture and gas barrier properties to protect the product from becoming stale. The acknowledged prior art also includes" bendable metal foil used to cover plastic containers for party-sized portions of butter, or similar packages for condiments or preserves such as have been available in the United States under the name Knotts Berry Farm Foods, Inc. (Placentia, California); these containers also have a corner pull tab that has been provided by slitting a rim portion. The laminate cover foil is understood to be thin metal foil coated outside with plastic

(with printed graphics) and having a heat seal adhesive under layer. The plastic coating merely provides moisture and gas barrier properties. The foii of these containers can be peeled back but must be made of metal so as ţo permit being permanently deformed.
The acknowledged prior art further includes a polyester coated paper layer with a sealant under layer such as hoţ melt adhesive, such ,as used in 6-pack individual serving yogurt containers such as believed to have been available in the United States under the name Yoplait. The polyester helps one-piece removal. The paper has some minimal ability to remain folded back, but lacks moisture barrier properties because it is absorbent.
French Patent 2,714,031 discloses a receptacle for foodsruffs with means for ensuring appropriate orientation of material within the receptacle. A cover film is provided.
European Patent EP-A-0548785 is concerned with packaging photographic film to protect the packaged contents from moisture, dirt and light. A lid sealably encloses-the package and may be a metallic foii to impart deadfold
•fe
characteristics or may be a non-foil laminate to provide a moisture barrier.
German Patent 19751428 discloses a container sealed with a film with a tear tab created at a flange area by incisions or perforations.
According to the present invention, there is provided a sealed package
comprising an entrance to said region, said container having a bottom wall and at
least two opposed side walls each of which has retaining structure integrally formed
thereon and protruding inward therefrom, said retaining structure being movable
outward to permit entry of a cartridge into said storage region and to thereafter
move inward to retain said cartridge in said region, a shaving cartridge contained
within said storage region and retained by said retaining structure, said cartridge ,'
including a plastic housing and a plurality of blades, and a removable film that is sealed to said sealing surface and covets said entrance.
According to a further aspect of the invention, there is provided a package comprising a formed plastic container defining a storage region defined by a bottom wall and side walls extending upward from said bottom wall, said container having an entrance to said storage region, said container having a length

and a width and a container longitudinal axis along said lengttf, at least one of said side walls of the container being a major longitudinal side wall extending along said container longitudinal axis, at least one of said side walls being a minor side wall extending generally transverse said container longitudinal axis, a shaving cartridge in said storage region in position for connection to a handle, said cartridge including a plastic housing and a plurality of blades, said shaving cartridge having a length and a width and a cartridge longitudinal axis along said length that is aligned with said container longitudinal axis, and a plastic lip formed adjacent to said major longitudinal side wall and extending integral with said major longitudinal side wall at said entrance to space a user's fmger or thumb from said entrance during removal of said cartridge from said region.
According to a further aspect of the invention, there is provided a sealed package comprising a formed plastic container defining a storage region and having a sealing surface around an entrance to said region, a shaving cartridge in said storage region in position for connection to a handle, said cartridge including a plastic housing and a plurality of blades, and a removable film that is sealed to said sealing surface and covers said entrance, said film having comprising at least one plastic layer having deadfold characteristics.
According to a further aspect of the invention, there is provided a sealed package comprising a formed plastic container defining a storage region and having a sealing surface around an entrance to said region, said container having a first confronting edge surface along a portion thereof, said container having an outwardly directed principal surface, a stored unit in said storage region, said unit being removable as an entire unit, a removable film that is sealed to said sealing surface and covers said entrance, and a plastic tab that is spaced by a gap from said formed plastic container and is attached to a portion of said film extending beyond said sealing surface for gripping by a user and initiating peeling of said film from said sealing surface, said tab having a second confronting edge surface along a portion thereof and facing said first confronting edge surface, said gap being defined , by said confronting edge surfaces, said gap extending along said confronting surfaces, said gap also extending in the direction parallel to an axis constructed from said principal surface of said container to a surface that is parallel with said film.

According to a furthqr aspect of the invention, there is provided a sealed package comprising a formed plastic container defining a storage region defmed by a bottom wall and side walls having side surfaces, and having a sealing surface around an entrance to said region, a stored unit in said storage region, said unit being removable as an entire unit, retaining structure formed on the inside of said container and extending inward from said side surfaces, said retaining structure retaining said stored unit in a desired position in said container, said retaining structure being movable outward to permit entry of said stored unit into said storage region and to thereafter move inward to retain said stored unit in said region, and a removable film that is sealed to said sealing surface and covers said entrance.
According to a further aspect of the invention, there is provided a package component comprising a formed plastic container defining a storage region, a container edge, and a sealing surface .around an entrance to said region, a plastic tab that is adjacent to said sealing surface and has a tab edge that is adjacent said container edge, and a first temporary connector that connects said tab to said plastic container, and wherein said first temporary connector has a first portion that extends transversely from said tab edge," a second portion that extends from said first portion generally parallel to said container edge and said tab edge, and a third portion that extends transversely from said container edge to said second portion, whereby said first temporary connector can be trimmed by a single cut made parallel to said container edge and tab edge.
According to a further aspect of the invention, there is provided a method of making a sealed package comprising providing a formed plastic container defining a storage region and a sealing surface around an entrance to said region, said storage region being defmed by at least two opposed side walls each of which
has retaining structure protruding inward therefrom, placing a shaving cartridge in
said storage region, said shaving cartridge having a plastic housing and a plurality
of blades, retaining said cartridge in said storage region by contacting said retaining structure with the shaving cartridge, said retaining structure moving outward to permit entry of a cartridge into said storage region and to thereafter moving inward to retain said cartridge in said region, and sealing a removable film to said sealing surface so as to cover said entrance.

According to the present invention, there is provided a method of making a sealed package comprising providing a formed plastic container defîning a storage region and a sealing surface around an entrance to said region, placing a unit in said storage region, said unit being removable as an entire unit, sealing a removable film to said sealing surface so as to cover said entrance, and attaching a plastic tab to a portion of said film extending beyond said sealing surface for initiating peeling of said film from said sealing surface, said plastic tab being provided in a first position adjacent to said sealing surface, connecting said plastic tab to said container with a temporary connector, and after said steps of sealing and attaching, disconnecting said temporary connector and leaving said tab in said first position adjacent said sealing surface.
According to the present invention, there is provided a method of providing a shaving cartridge on a răzor comprising providing a sealed package including a formed plastic container containing a shaving cartridge in a storage region and a removable film sealed to a sealing surface of said container around an entrance to said storage region, said cartridge including a plastic housing and a plurality of blades, said cartridge being retained by retaining structure formed on a wall of the container, peeling said film from said sealing surface to provide access to said shaving cartridge, attaching said cartridge to a handle, and disengaging said cartridge from the--retaining structure.
According to the present invention, there is provided a method of providing a shaving cartridge on a răzor comprising providing a sealed package including a formed plastic container containing a shaving cartridge in a storage region and a removable film sealed to a sealing surface of said container around an entrance to said storage region, said film comprising a plurality of plastic layers formed without a structural metal layer, said cartridge including a plastic housing and a plurality of blades, peeling said film from said sealing surface to provide access to said shaving cartridge, and attaching said cartridge to a handle, wherein said peeling includes, upon removal of a peeling force, said film remaining attached to said sealing surface and folded back to not obstruct said attaching.
In one aspect, a sealed package includes a formed plastic container, a shaving cartridge (or other stored unit) in a storage region in the container, and a

removable film that covers and is sealed to a sealing surface around an entrance to the storage region. Side walls of the container have retaining structure that
protrudes inward and retains the shaving cartridge (or other stored unit).
% In another aspect, a sealed package contains a shaving cartridge in a
formed plastic container that is sealed by a removable film. The container has a lip adjacent to and extending from a side wall of the container at an entrance the storage region to space a user's finger or thumb from the entrance during removal of the cartridge.
In another aspect, a sealed package contains a shaving cartridge in a formed plastic container that is sealed by a removable film. The film has deadfold characteristics which facilitate removal of the cartridge when the film is still partially connected at the rear of the container.
In another ^aspect, a sealed package contains a stored unit in a formed
plastic container that is sealed by a removable film. A plastic tab is attached to a
portion of the film extending beyond the sealing surface of the container to iniţiate
peeling of the film from the sealing surface. The plastic tab is spaced from the
formed plastic container by a gap.
Particular embodiments of the invention may include one or more of the following features. The blades of the cartridge face away from the entrance to

the storage region. The container nas a ramp structure that leads from the lip on the container to the cartridge in the storage region. The container has support members on the bottom wall that support the cartridge in a desired orientation; the support members have a curved surface that matches the upper surface profile of the cartridge. The cartridge retaining structures on the side walls of the container have inclined surfaces facing the entrance and the bottom wall. The container is transparent. The container has a pluraliry of protruding finger gripping ridges on one or more exterior surfaces; the ridges on some surfaces have an indented profile to accommodate a user's fingers. The plastic tab connected to the removable fihn has a gripping ridge extending from a surface. The plastic tab is located at a cutout , region at the lip of the container. The tab has the shape of a half moon. The removable film is more flexible than the walls of the formed plastic container. The fihn is adhered to the container with a removal force greater than 1.5 Newtons (preferably 3-5 Newtons). The film carries printing on an internai surface between fihn layers. The fihn is heat sealed or radio frequency (RF) sealed to the sealing surface of the container.
In another aspect, the invention features, in general, a package component including a formed plastic container defining a storage region and a sealing surface around an entrance to the region, a plastic tab that is adjacent to the sealing surface, and a temporary connector that connects the tab to the plastic container.
Particular embodiments of the package component may have one or more of the followmg features. The temporary connector has a first portion that extends transversely from a tab edge, a second portion that extends from the first portion generally parallel to the container edge and the tab edge, and a third portion that extends transversely from the container edge to the second portion, resulting in a hoop shape connector. The temporary connector is molded at the same time as the formed plastic container and the tab. Alternatively, the temporary connector could be a frangible bridge portion of plastic.
In other aspects, the invention features, in general, methods of
% making the sealed packages as described and methods of using the sealed packages
as described. 3»
Embodiments of the invention may include 'one or more of the following advantages. The sealed package protects the cartridge -from "moisture, shaving preparation products such as soaps, foams and gels, and cleaning agents when the package is stored in a shower or bath tub area prior to usage. The hoop bridge members can be easily severed with a single' cut along the outside of the package. The inclined surfaces guide the cartridge to the desired position when loaded into the storage region. The support members and retaining structure hold the cartridge in a desired position for attachment to a handle. The plastic tabs provide a good gripping member for initiating peeling. The deadfold characteristics prevent a partially removed foil from interfering with connection of the handle to the cartridge. The ramp structure guides the handle to the connecting portion of the cartridge contained in the container. The lip protects the user's fingers or thumb from the cutting edges of the blade during removal of the cartridge from the
Accordingly, the present invention relates to a package component including a formed plastic container (12) defining a storage region (18), a container edge, and a sealing surface (20) around an entrance (22) to said region, characterized in that a plastic tab (24) is adjacent to said sealing surface (20) and has a tab edge that is adjacent said container edge and in that a frangible temporary connector (46) connects said tab (24) to said plastic container (12).
A sealed package including a formed plastic container (12) defining a storage region (18), a container edge, a sealing surface (20) around an entrance (22) to said region, and a removable sheet (14) sealed to the sealing surface (20) and covering said entrance (22), wherein a plastic tab (24) is adjacent to said sealing surface (20) and has a tab edge that is adjacent said container edge (28), in that a frangible temporary-connector (46) connects said tab (24) to said plastic container (12) and in that the removable sheet is sealed to the sealing surface (20) and to the tab (24).
A method of making a sealed package, wherein by the steps of providing a formed plastic container defining a storage region and a sealing surface around an entrance to said region, placing a unit in said storage region, said unit being removable as an entire unit, seating a removable film to said sealing surface so as to cover said entrance, and attaching a plastic tab to a portion of said film extending beyond said sealing surface for initiating peeling of said film from said sealing surface, said plastic tab being provided in a first position adjacent to said sealing surface, connecting said plastic tab to said container with a temporary connector, and, after said steps of sealing and attaching, disconnecting said temporary connector and leaving said tab in said first position adjacent said sealing surface.
Other advantages and features of the invention will be apparent from the following detailed description of th.e embodiments of the invention and from the claims.
Fig. 1 is a perspective view of a sealed package, in a partially opened condition with a shaving cartridge in the package.
Fig. 2 is a perspective view of a formed plastic container of the Fig. 1 package.
Fig. 3 is a sectional view, taken at 3-3 of Fig. 2, of the Fig. 2 plastic container.
Fig-4 is a top view of the Fig. 2 plastic container.
Fig. 5 is a front elevation of the Fig. 2 plastic container.
Fig. 6 is a rear elevation of the Fig. 2 plastic container.
Fig. 7 is a bottom view of the Fig. 2 plastic container.
Fig. 8 is a partial sectional view, taken at 8-8 of Fig. 4, showing a
connecting bridge structure of the Fig..4 container. .
Fig. 9 is a partial plan view showing an alternative to the bridge
structure. Figs. 10-11

Fig. 12 shows the layered structura of the reraovable film of the Fig. l package.
Figs. 13-14 shows a handle being connected to a răzor cartridge contained in the Fig. l package.
Fig. 15 shows an opened cover sheet of the Fig. 3 package remaining in a stable first exemplary peeled back condition; and
Fig. 16 shows an opened cover sheet of the Fig. 3 package remaining
* in a stable second exemplary peeled back condition.
^.eferring to Fig. l there is shown sealed package 10 including ' formed plastic container 12, cover sheet 14, and shaving cartridge 16 stored inside container 12 in storage region 18. Fig. 2 shows container 12 prior to attachment of cover sheet 14. Container 12 has a sealing surface 20 surrounding the entrance 22 to storage region 18, and cover sheet 14 is sealed to sealing surface 20. Plastic tabs 24 (only one is shown in Fig. 1) are attached to an undersurface at two corners of cover sheet 14. Plastic tabs 24 are used to iniţiate peeling of sheet 14. Prior to peeling, plastic tabs 24 are located in cutaway porţions 26 (Fig. 1) that are located at the ends of lip 28, which extends along one side of container 12. As can be seen from Fig. 2, there is a curved gap 29 between tab 24 and lip 28.
Referring to Figs. l through 7, container 12 has finger gripping ridges 30 on the two ends (Figs. l, 2 and 7) and relieved portions 32 providing vertical gripping portions 34 on front surface 35 (Figs. l, 2, 5 and 7) and relieved portions 36 providing gripping ridges 38 on rear surface 40 (Figs. 6 and 7). As can perhaps best be seen from the bottom view in Fig. 7, the end gripping ridges 30 extend further outward than the middle gripping ridges 30 such that the outermost surfaces of the gripping ridges nave an overall indented profile to better accommodate the user's fîngers.
Figs. 2 and 4 show a plastic container 12 prior to filling with shaving cartridge 16 and sealing sheet 14 thereover. At this stage in the manufacture, plastic tabs 24 are part of container 12 and connected thereto by internai bridge members 46, which are best shown in Figs. 4 and 8. Bridge members 46 are thin, frangible members that are strong enough to hold tabs 24 in place during handling prior to sealing, but weak enough to easily break when a user lifts a tab 24 to
initiate peeling-af-cover 14. (The lips could be relieved mechanically or at least partially severed to provide alternative bridge members). Tabs 24 have circumferential ridges 25 at the outer edges to facilitate gripping by a user's finger. (Figs. 5, 6 and 7).
Referring to Figs. 1-4, it is seen that lip 28 is connected to side wall 48 of the container by an angled ramp structure 50 that leads to cartridge connecting structure 52 (Fig. 1) of cartridge 16. A suitable cartridge 16 is described in U.S.S.N. 09/066,499, fîled April 24, 1998, (hereby incorporated by reference). U.S.
Design Patent D407,851 describes a handle that mates with cartridge 16. During connection of a răzor handle (Fig. 13) to cartridge 16, the c'onnecting end of the handle is brought over lip 28, and ramp 50 tends to guide the end of the handle into connecting structure 52 (Fig. 1). Upon connection of cartridge 16, the handle is retracted, and cartridge 16 is removed from container 12. Lip 28 protects the user's thumb and fingers from being cut by the blades of cartridge 16 during retraction from container 12.
Referring to Figs. 3 and 4 it is seen that container 12 has two
supporting members 51, which have curved, concave upper surfaces 53 matching 4 the pro file of the top surface of the blade unit of cartridge 16 in order to support cartridge 16 in the desired position. Supporting members 51 support the edge portions of cartridge 16 outside of the blades of cartridge 16. When stored in container 12, the cutting edges of the blades face downward. Detents 54, 56 protrude inward from respective side walls 48, 58. Both detents 54, 56 have upper inclined surfaces 60 facing entrance 22 and lower inclined surfaces 62 facing bottom wall 64. As the cartridge is loaded into container 12, the cartridge slightly deforms the container walls as it moves over inclined surfaces 60 and snaps past detents 54, 56. The cartridge also slightly deforms the container walls as the cartridge moves past inclined surfaces 62 during removal from the container 12. Detents 54 hold the guard portion of cartridge 16 down, and detents 56 hold the cap portion of the răzor cartridge down.
In manufacture, container 12 is injection molded from polypropylene. Other materials that can be used for container 12 include polystyrene (particularly crystalline polystyrene, high impact polystyrene (HIPS) or medium impact

polystyrene (MIPS)), polycarbonate, acrylonitrile butadiene styrene (ABS), Nylon, and SÂN. In using materials other than polypropylene, one skilled in the art would select an appropriate sealing layer material for sealing layer 118 (shown in Fig. 12 and discussed below). After forming container 12, a cartridge 16 is loaded into a container 12 with the blade unit snapping beyond detents 54, 56 and resting on upper surface 53 in a desired connecting position with cartridge connecting structure 52 adjacent to ranip 50 near lip 28. Then cover sheet 14 is sealed to upper sealing surface 20 and to the upper surfaces of plastic tabs 24 by heat welding. Altematively, radio frequency sealing could be employed.
Container 12 is made from transparent plastic to permit visual inspection of the cartridges therein. Cover sheet 14 is printable, and can carry instructions for opening and use of a cartridge. Cover sheet 14 is made of a laminate as shown in Fig. 5 (not to scale). The laminate comprises 0.48 mii thick (0.012 mm, 48 gauge) PET upper layer 112 (which is reverse printed), 0.50 mii thick (0.013 mm, 50 gauge, altematively referred to as "7.5 lbs./ream") polyethylene (preferably LDPE) layer 114 thereunder (which is preferably white for opacity, but could altematively be transparent), 1.15 mii thick (0.029 mm, 115 gauge) oriented high density polyethylene layer (HDPE) 116 thereunder, 0.1 mii thick (approximately) (also referred to as about "2 lbs./ream") polyester-urethane adhesive layer 117 thereunder, and 1.25 mii thick (0.32 mm) coextruded LDPE-EVA (28%) lower sealing layer 118 thereunder, the lower EV A portion of which heat bonds to container 12.
In sheet 14, the HDPE layer, and to a lesser extent the LDPE layer, provide moisture barrier properties and deadfold characteristics. PET provides bulk and clarity and protection for the printing on its lower surface. PET also provides structural integrity for the laminate so as to avoid tearing and provide one-piece removal of the laminate. PET is selected that preferably withstands an accelerated testing regime"dTâ'100°F hoţ water bath for 24 hours without delamination. The polyethylene layer (preferably LDPE) acts as a bonding layer to join the HDPE layer and the PET layer. The PET is chemically primed for use with the LDPE which is applied hoţ (about 600°F) as the bonding layer between PET and HDPE. The polyethylene layer (preferably LDPE) is preferably opaque, in particular white,

to provide a background color for the printing, and provides opacity to present an aesthetically more uniform appearance between regions that are heat-affected by sealing and those regions further frorn the sealing surface. The polyester-urethane layer 117, whlch is very thin and less then l mii, preferably only about 0.1 mii, acts as a bonding layer to join the HDPE layer 116 and the LDPE-EVA sealing layer 118. The LDPE-EVA of layer 118 is particularly suited for providing a seal to polypropylene in container 12. It is understood that the amount of E VA in the sealing layer 118 can be varied depending on the material of container 12. It is further understood that if using radio frequency or ultrasonic sealing, it would be possible to omit a distinct lower sealing layer 118. The sealing layer 118 is ' preferably not thicker than 1.25 mii or else its bulk may outstrip the deadfold capability of the HDPE layer to remain peeled back.
"Deadfold" characteristics for the laminate are provided by the LDPE and HDPE layers, primarily the HDPE layer. The deadfold characteristics are such that when cover sheet 14 is peeled open with a portion still attached to the container 12, and then released by the user's hand, sheet 14 remains folded back or bended back after opening, as is shown in Figs. 13-16, to permit easy access to the cartridge. In the case of stored articles that could be accessed by a user's hands, the deadfold characteristic is such that there is substantially unobstructed access to a digit of the hand while accessing the article inside. In general, as is shown in Fig. 16, sufficient deadfold results when the angle between the removed portion and sealing surface 22 is greater than 30° and most preferably greater than 45° (schematically depicted in dotted line positions). Viewed another way, as shown for example in Fig. 15 or 16, sufficient deadfold results in the removed portion of the cover sheet remaining behind a position to expose at least halfway the area of the entrance to the container to permit substantially unimpeded access to a stored object. Preferably, as is shown in Fig. 15, the removed portion of the cover sheet generally remains behind a midline through the container half-way between side surfaces. In particular, cover-sheet 14 remains folded back sufficiently such that the handle is substantially unobstructed while connecting to the cartridge, and the cartridge can be removed without a substanţial impediment.
The moisture vapor barrier properties are provided by the LDPE and

HDPE layers, primarily the HDPE layer. The moisture barrier property of the sheet can be expressed in terms of the Moisture Vapor Transmission Rate (MVTR) being iess than or equal to about 0.16 gm of water per 100 square inches per 24 hours, under conditions of 100°F (37.8°C) and 90% relative humidity.
The~iiseof the HDPE layer together with the LDPE layer advantageously provides the desired combination of deadfold characteristics and moisture barrier properties. Further, the cover sheet is improved by the use of the LDPE layer being sandwiched between an outer PET layer and the HDPE layer to give the additional beneflt of protecting the film integrity, such as the resistance to tearing and integrity of the printing.
The plastic sheet structure of cover 14, rather than metal foii, is preferred because it meets EAS requirements. In an EAS system, small tags (which comrnonly contain metal inside them) on the products are deactivated at time of payment so as to not set off an alarm when a paying customer leaves the store. If metal foii were used on a package containing a shaving cartridge, the combination of metal foii and metal blades in close proximity could interfere with proper functioning of the EAS tag.
Cover sheet 14 maintains structural integrity and does not delaminate, does not tear when being removed (i.e., is removable in one piece), and does not degrade in the presence of water and household cleaning agents (which, e.g., might be used in a bath tub) or shaving preparation products, protects articles stored therein from moisture and cleaning agents, has desired deadfold characteristics for ease of product removal, is printable, and does not interfere with EAS systems.
Cover sheet 14 is adhered to container 12 to have a predetermined iniţial peel force. Peel force is determined by supporting container 12 such that cover sheet 14 is in a vertical plane with the corner tab being directed downward, and a diagonal from that corner to the opposite corner being aligned vertically. Container 12 is maintained in this position by a'fixture, while the tab at the lower corner is connected to a force versus distance measurement machine (available under the Instron trade designation) and pulled upward by the machine. The resulting distance versus force graph typically has a single peak, being the iniţial peel force of interest, of about 3-5 lb.(13.6-22.7N) at sealing temperatures from
160°C - 215°C. The preferred sealing temperature is about 175°C.
In use, a user bends plastic tabs 24 to break bridges 46 and then pul back along. the surface of the cover sheet to iniţiate peeLing. The user can grip the gripping ridges 30 at the two ends of the container or altematively grip the ridges 34, 38 at the front and the back. The user then connects the handle (not shown) te cartridge connecţing_structure 52, and removes cartridge 16. Detents 56 act as a pivot as cartridge 16 is removed. If the front and the back ridges 34, 38 are gripped by the user, lip 28 protects the user's thumb or fingers from being cut by the blades during removal of the cartridge.
Other ernbodiments of the invention are withifi the scope of the claims. For example, Fig. 9 (describing the preferred embodiment) shows the use of hoops 100 that extend outward from tabs 24 and the side of container 12 to provide a temporary connecting structure. After eover sheet nas been sealed to container 12 and tabs 24, hoops 100 can each be trimmed with a single cut parallel to the sides of the container 12 or edge of lip 28, In addition, tabs 24 and containei
can be made from the same material or different material, and the temporary
* connectors, e.g., hoops 100, could be made of the same or different material. Tabs
could be made of elastomeric material to provide a better grip surface. Besides angled detents 54, 56, other protruding structure could be used to hold a cartridge in a desired position. Cover sheet 14 could, in some applications, be made of metal foii, which will have the desired deadfold characteristics.

WE CLAIM:
1. A package component including a formed plastic container (12) defining
a storage region (18), a container edge, and a sealing surface (20) around an
entrance (22) to said region, characterized in that a plastic tab (24) is adjacent
to said sealing surface (20) and has a tab edge that is adjacent said container
edge and in that a frangible temporary connector (46) connects said tab (24) to
said plastic container (12).
2. A package component as claimed in claim 1, wherein said tab edge is in
line with said container edge.
3. A package component as claimed in claim 1 or claim 2, wherein said
temporary connector is molded at the same time a said formed plastic
container (12) and said tab (24).
4. A package component as claimed in any of claims 1 to 3, wherein said
container has a bottom wall (64) and side walls (48) extending upward from
said bottom wall (64) and defining said storage region (18), and wherein a lip
(28) is adjacent to and extends from a first said side wall at said entrance, said
lip having a cutout portion (26) at an end of said lip, and wherein said tab (24)
is located at said cutout portion.
5. A sealed package including a formed plastic container (12) defining a
storage region (18), a container edge, a sealing surface (20) around an entrance
(22) to said region, and a removable sheet (14) sealed to the sealing surface (20)
and covering said entrance (22), wherein a plastic tab (24) is adjacent to said
sealing surface (20) and has a tab edge that is adjacent said container edge
(28), in that a frangible temporary connector (46) connects said tab (24) to said
plastic container (12) and in that the removable sheet is sealed to the sealing
surface (20) and to the tab (24).
6. A sealed package as claimed in claim 5, wherein a first temporary
connector (100) connects said tab (24) to said plastic container (12) and
wherein said first temporary connector (100) has a first portion that extends
transversely from said tab edge, a second portion that extends from said first
portion generally parallel to said container edge and said tab edge, and a third
portion that extends transversely from said container edge to said second
portion, whereby said first temporary connector (100) can be trimmed by a
single cut made parallel to said container edge and tab edge.
7. A sealed package as claimed in claim 6, wherein said temporary
connector is molded at the same time as said formed plastic container (12) and
said tab (24).
8. A sealed package as claimed in claim 6 or claim 7, wherein said
container has a bottom wall (64) and side walls (48) extending upward from
said bottom wall (64) and defining said storage region (18), and wherein a lip
(28) is adjacent to and extends from a first said side wall at said entrance, said
lip having a cutout portion (26) at an end of said lip, and wherein said tab (24)
is located at said cutout portion.
9. A sealed package as claimed in claim 6, wherein a second temporary
connector connects said tab to said plastic container.
10. A sealed package as claimed in claim 9, wherein said first and second
temporary connectors are molded at the same time as said formed plastic
container and said tab.
11. A sealed package as claimed in claim 5, wherein there is an interface
between said tab and said container, and a frangible plastic bridge portion (46)
is located at a discrete location along said interface.
12. A sealed package as claimed in claim 11, wherein said frangible bridge
portion (46) extends along at least a majority of said interface.
13. A sealed package as claimed in any of claims 5 to 12, wherein said tab
(24) has a gripping ridge (25) extending from a surface.
14. A sealed package as claimed in claim 8, wherein said container is sized
to store a shaving cartridge (16) and includes a ramp structure (50) connecting
said lip (28) to a said side wall (48) and leading to said cartridge in said region.
15. A method of making a sealed package, wherein by the steps of providing
a formed plastic container defining a storage region and a sealing surface
around an entrance to said region, placing a unit in said storage region, said
unit being removable as an entire unit, seating a removable film to said sealing
surface so as to cover said entrance, and attaching a plastic tab to a portion of
said film extending beyond said sealing surface for initiating peeling of said film
from said sealing surface, said plastic tab being provided in a first position
adjacent to said sealing surface, connecting said plastic tab to said container
with a temporary connector, and, after said steps of sealing and attaching,
disconnecting said temporary connector and leaving said tab in said first
position adjacent said sealing surface.
16. A method as claimed in claim 15, wherein said attaching comprises
sealing said tab to said portion of said film extending beyond said sealing
surface during the same operation in which said film is sealed to said sealing
surface.
17. A method as claimed in claim 15 or claim 16, wherein said temporary
connector is made of plastic, and said providing includes forming said plastic
tab and temporary connector in the same operation as forming said plastic
container.
18. A method as claimed in claim 17, wherein said temporary connector is a
frangible bridge portion, and said disconnecting includes breaking said
frangible bridge portion.

19. A package components substantially as herein described with reference
to the accompanying drawings.
20. A sealed package substantially as herein described with reference to the
accompanying drawings.
21. A method of making a sealed package substantially as herein described.

Documents:

1346-DELNP-2005-Abstract-(09-07-2008).pdf

1346-delnp-2005-abstract.pdf

1346-DELNP-2005-Claims-(09-07-2008).pdf

1346-delnp-2005-claims.pdf

1346-DELNP-2005-Correspondence-Others-(09-07-2008).pdf

1346-delnp-2005-correspondence-others.pdf

1346-delnp-2005-description (complete)-09-07-2008.pdf

1346-delnp-2005-description (complete).pdf

1346-DELNP-2005-Drawings-(09-07-2008).pdf

1346-delnp-2005-drawings.pdf

1346-DELNP-2005-Form-1-(09-07-2008).pdf

1346-delnp-2005-form-1.pdf

1346-delnp-2005-form-18.pdf

1346-DELNP-2005-Form-2-(09-07-2008).pdf

1346-delnp-2005-form-2.pdf

1346-DELNP-2005-Form-3-(09-07-2008).pdf

1346-delnp-2005-form-3.pdf

1346-delnp-2005-form-5.pdf

1346-DELNP-2005-GPA-(09-07-2008).pdf

1346-delnp-2005-gpa.pdf

1346-delnp-2005-pct-101.pdf

1346-delnp-2005-pct-105.pdf

1346-delnp-2005-pct-210.pdf

1346-delnp-2005-pct-220.pdf

1346-delnp-2005-pct-304.pdf

1346-delnp-2005-pct-308.pdf

1346-delnp-2005-pct-332.pdf

1346-delnp-2005-pct-401.pdf

1346-delnp-2005-pct-402.pdf

1346-delnp-2005-pct-408.pdf

1346-delnp-2005-pct-409.pdf

1346-delnp-2005-pct-416.pdf

1346-DELNP-2005-Petition-137-(09-07-2008).pdf

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Patent Number

233250

Indian Patent Application Number

1346/DELNP/2005

PG Journal Number

13/2009

Publication Date

27-Mar-2009

Grant Date

27-Mar-2009

Date of Filing

04-Apr-2005

Name of Patentee

THE GILLETTE COMPANY

Applicant Address

PRUDENTIAL TOWER BUILDING,BOSTON MASSACHUSETTS 02199,UNITED STATES OF AMERICA.

Inventors:

#	Inventor's Name	Inventor's Address
1	JOHN D.PETRICCA	250 PLEASANT STREET LEOMINSTER,MA 01453, U.S.A.

PCT International Classification Number

B65D 77/20

PCT International Application Number

PCT/US00/20067

PCT International Filing date

2000-07-24

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	09/364,242	1999-07-29	U.S.A.