Title of Invention	A SEMI SANDWICH PANEL
Abstract	A semi sandwich panel comprising a core material inserted into a portion which needs a strength and intensity between both surface finishing materials formed of a textile.

Full Text

FORM-2 THE PATENTS ACT, 1970 COMPLETE SPECIFICATION SECTION 10 TITLE A SEMI SANDWICH PANEL. APPLICANT (S) HANKUK FIBER GLASS CO.LTD 181-1, YONGJI-RI, BUBUK-MYUN, MIRYANG-SE, KYUNGNAM 627-850, REPUBLIC OF KOREA. A COMPANY EXISTING UNDER THE REPUBLIC OF KOREA. The following Specification particularly describes the nature of this invention and the manner in which it is to be performed :- SEMI SANDWICH PANEL BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a semi sandwich panel used as an interior finishing material for a train and ship, and in particular to. a semi sandwich panel which has a certain lightness and strength and is fabricated at a lower cost. Description of the Background Art Generally, an interior finishing material which is used for a train and ship formed of a metallic material, is fabricated at a lower cost. A complicated product may be fabricated using the above material. In this case, it is easier to maintain the train and ship. However, the train and ship having an interior formed of a metallic interior finishing material is easily rotten. So, the life span is short. The total weight of the train or ship is increased due to the metallic interior finishing material. Therefore, in order to overcome the above problems, a surface finishing material and core material formed of a textile are overlapped and bonded using an adhesive for thereby fabricating a sandwich panel which is'used as an interior finishing material in the train and ship. The above sandwich panel is lighter than a metallic panel and has a better strength with respect to its weight and a better durability. However, since a core material filled between the surface finishing materials is fully used or included in all over the surface finishing material, the number of the fabrication processes is increased, and the fabrication cost is significantly increased. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a semi sandwich panel which overcomes the problems encountered in the conventional art. It is another object of the present invention to provide a semi sandwich panel which is capable of partially forming a core material filled between both surface finishing materials formed of a textile in a portion which needs an increased strength and intensity of a sandwich panel for thereby implementing a certain structural strength and intensity of a sandwich panel, simplifying the number of fabrication processes and decreasing the fabrication cost. In order to achieve the above objects, there is provided a semi sandwich panel in which a core material is inserted into a portion which needs a strength and intensity between both surface finishing materials formed of a textile. The surface finishing material is formed of more than one material selected from the group formed of a glass fiber, a carbon fiber, a synthetic fiber, and an aramid fiber. The core material is formed of more than one material selected from the group formed of an aluminium honeycomb, a nomex honeycomb, a paper honeycomb, a urethane foam, and an acrylic foam. The insert nut is installed in the core material formed between both surface finishing materials for implementing a mounting structure. BRIEF DESCRIPTION OF THE DRAWINGS The present invention will become better understood with reference to the accompanying drawings which are given only by way of illustration and thus are not limitative of the present invention, wherein: Figure 1 is a perspective view illustrating a semi sandwich panel according to a first embodiment of the present invention; Figure 2 is a cross-sectional view taken along line A-A of Figure 1; Figure 3 is a cross-section view illustrating a mounting structure of a semi sandwich panel of Figure 1; Figure 4 is a perspective view illustrating a semi sandwich panel according to a second embodiment of the present invention; Figure 5 is a cross-sectional view taken along line B-B of Figure 4; and Figure 6 is a cross-sectional view taken along line CC of Figure 4. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be explained with reference tathe accompanying drawings. Figure 1 through 3 are views illustrating a semi sandwich panel which is used as an interior finishing material for a train according to a first embodiment of the present invention. As shown therein, a core material 14 is formed into a portion which needs a certain strength and intensity between both surface finishing materials 12 formed of a textile for thereby forming a semi sandwich panel 10. As an example of the textile surface finishing material 12, a glass fiber is impregnated into a phenol or epoxy resin for thereby producing a prepreg. The prepreg is disposed on a mold or a molding base. Thereafter, a core material 14 is partially inserted into an edge portion of the inner surface of the surface finishing material 12 and in a rib shape across the edge portions based on a known method for implementing a certain strength and intensity and is molded at a high temperature or is fabricated based on a hand lay up method at a room temperature and is hardened for thereby fabricating a semi sandwich panel 10. As shown in Figure 3, in the semi sandwich panel 10, a certain number of insert nuts 16 are installed in the interior of the core material 14 for mounting in the structure of a train. A connection bracket 20 is fixed to the insert nut 16 with the help of a bolt 22 . In addition, the connection bracket 20 is installed in the semi sandwich panel 10, so the semi sandwich panel 10 is mounted on the structure of the train. Figure 4 through 6 are views illustrating a semi sandwich panel for an interior finishing material of a train according to a second embodiment of the present invention and illustrating a semi sandwich panel in which a window frame is integrally formed. As and example of the textile surface finishing material 12, a glass fiber is impregnanted into a phenol or epoxy resin for thereby producing a prepreg. The prepreg is disposed on a mold or a molding base. Thereafter, a core material 14 is partially inserted into an edge portion of the inner surface of the surface finishing material 12 and a circumference of the window frame 10a in a rib shape 30 based on a known method for implementing a certain strength and intensity and is molded at a high temperature or is fabricated based on a hand lay up method at a room temperature and is hardened for thereby fabricating a semi sandwich panel 10. The insert nut is installed in the core material 14 in the same manner as the first embodiment of the present invention. In the first and second embodiments of the present invention, the textile . surface finishing material 12 is formed of more than one material selected from the group formed of a glass fiber, a carbon fiber, a synthetic fiber, an aramid fiber. In addition, in the first and second embodiments of the present invention, the core material 14 is formed of more than one material selected from the group formed of an aluminium honeycomb, a nomex honeycomb, a paper honeycomb, a urethane foam, and an acrylic foam. In the first and second embodiments of the present invention, the core material 14 which is partially filled between both surface finishing materials 12, namely, is filled into a portion which receives a stress and needs a certain strength and intensity. The core material 14 is partially inserted between both surface finishing materials 12 in various shapes based on the shape and purpose of the interior finishing material. As described above, in the semi sandwich panel according to the present invention, the core material which forms a structure of the sandwich is partially formed in an edge portion of the panel which needs a strength and intensity between both surface finishing materials and in a rib shape across the edge portions or in the case of the window frame, the core material is formed in an edge portion of the panel and the circumference of the window frame in a rib shape for thereby decreasing the use of the core material compared to the conventional sandwich panel, implementing a desired strength, intensity and durability and decreasing the fabrication cost. In addition, in the present invention, it is possible to fabricate the product based on a smaller number of the fabrication processes compared to the conventional fabrication method. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims. . We Claim: 1. A semi sandwich panel comprising a core material inserted into a portion which needs a strength and intensity between both surface finishing materials formed of a textile. 2. The panel as claimed in claim 1, wherein said surface finishing material is formed of more than one material selected from the group formed of a glass fiber, a carbon fiber, a synthetic fiber, and an aramid fiber. 3. The panel as claimed in claim 1, wherein said core material is formed of more than one material selected from the group formed of an aluminium honeycomb, a nomex honeycomb, a paper honeycomb, a urethane foam, and an acrylic foam. 4. The panel as claimed in claim 1, wherein an insert nut is installed in the core material formed between both surface finishing materials for implementing a mounting structure. 5. The panel as claimed in claim 1, wherein said core material is formed in an edge portion of the inner surface of the surface finishing material and is partially formed across the edge portion of the same. 6. The panel as claimed in claim 1, wherein said core material is formed in an edge portion of the inner surface of the surface finishing material and is partially formed in a circumference of a window frame. 7. The panel as claimed in claim 1, wherein said semi sandwich panel is adapted to an interior finishing material of a train or a ship. 8. A semi sandwich panel as described herein with reference to the accompanying drawings.

Documents:

13-mum-2002-abstract(amended)-(3-12-2003).pdf

13-mum-2002-annexure to form 3(6-3-2002).pdf

13-mum-2002-cancelled pages(3-12-2003).pdf

13-MUM-2002-CLAIMS(COMPLETE)-(8-1-2002).pdf

13-mum-2002-claims(granted)-(19-9-2006).pdf

13-mum-2002-claims(granted)-(8-1-2002).doc

13-mum-2002-claims(granted)-(8-1-2002).pdf

13-mum-2002-correspondence(8-7-2004).pdf

13-mum-2002-correspondence(ipo)-(19-9-2006).pdf

13-mum-2002-correspondence(ipo)-(9-2-2007).pdf

13-MUM-2002-DESCRIPTION(COMPLETE)-(8-1-2002).pdf

13-mum-2002-description(granted)-(19-9-2006).pdf

13-mum-2002-drawing(8-1-2002).pdf

13-mum-2002-drawing(granted)-(19-9-2006).pdf

13-mum-2002-form 1(6-3-2002).pdf

13-mum-2002-form 1(8-1-2002).pdf

13-mum-2002-form 19(23-5-2003).pdf

13-mum-2002-form 19(9-12-2003).pdf

13-MUM-2002-FORM 2(COMPLETE)-(8-1-2002).pdf

13-mum-2002-form 2(granted)-(19-9-2006).pdf

13-mum-2002-form 2(granted)-(8-1-2002).doc

13-mum-2002-form 2(granted)-(8-1-2002).pdf

13-MUM-2002-FORM 2(TITLE PAGE)-(COMPLETE)-(8-1-2002).pdf

13-mum-2002-form 2(title page)-(granted)-(19-9-2006).pdf

13-mum-2002-form 3(8-1-2002).pdf

13-mum-2002-form 5(3-12-2003).pdf

13-mum-2002-petition under rule 123(6-3-2003).pdf

13-mum-2002-petition under rule 138(3-12-2003).pdf

13-mum-2002-power of attorney(6-3-2002).pdf

13-mum-2002-specification(amended)-(3-12-2003).pdf

13-mum-2002-specification(amended)-(8-7-2004).pdf

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