Indian Patents. 250189:ANTI-PERFORATION INSOLE FOR FOOTWEAR

Title of Invention	ANTI-PERFORATION INSOLE FOR FOOTWEAR
Abstract	There is disclosed an anti-perforation insole (1) for footwear, having a multilayer (10) consisting of at least four layers of a fabric (12) double-faced by weft and made of high tenacity polyester fibers coupled together through a thermoplastic film or an adhesive resin, each of the fabric layers having a ceramic surface treatment (14).

Full Text	DESCRIPTION The present invention relates to an anti-perforation insole for footwears and, in particular, an anti- perforation insole made of a textile material espe- cially suitable for the use in the manufacturing of accident-prevention footwears with Strobel technique. Anti perforation insoles made of a textile material are shown, among others, in US 6368989 (relating to a multilayer in exclusively aramidic fibers) and WO 00/41583 (relating to a multilayer including at least a layer with high energy absorption ability in poly- nornbornene). The same Applicant is the owner of the pending patent applications for invention No. PO2003A000005 and PCT/IT/2004/000208 relating to multilayered textile structures resistant to the perforation, wherein high' toughness aramidic and non aramidic fibers are used and the single layers show a surface ceramic treat- ment . Also ballistic protections are known, wherein multi- layered textile structures are employed, which are however conceived in order to resist to the violent impact of a bullet and not to the penetration of nails (the EN 12568 regulation foresees that an anti-perforation insole resists to a force of at least 1.100 N exerted by a nail advanced at the speed of 10 mm/min. ± 3 mm/min.). The aim of the present invention is to provide an anti-perforation insole which is exclusively made in a non aramidic textile material and which, also being resistant to the penetration of a nail in accordance with the regulation in force, can be sewn to the upper of a footwear manufactured with Strobel technique. Accordingly, the present invention provides anti-perforation insole for footwear, having a multilayer consisting of at least four layers of a fabric double-faced by weft and made of high tenacity polyester fibers coupled together through a thermoplastic film or an adhesive resin, each of the fabric layers having a ceramic surface treatment. The present invention also provides a method for manufacturing accident- prevention footwear comprising an upper and a sole, wherein the sole is directly produced on the upper by injection molding, and wherein an insole according to.this invention, as described herein is previously sewn to said upper. As mentioned hereinbefore, the anti-perforation insole is, preferably, sewn to the upper by Strobel technique, and also preferably, the insole is exclusively made from a non-aramidic textile material. In particular, the fabric shows a face with a weave of the derived spine-type and a face with a weave of the derived satin-type. The surface ceramic treatment is carried out through smearing with a polyurethane and/or acrylic resin enriched with powders of hard and abrasive materials, preferably micronized ceramic materials in form of silicates, for example of aluminium. Among the advantages obtained with an insole according to the invention, there is the fact that the double- faced fabric employed shows a high density of yarns (in particular of weft) and a very compact structure. In particular, in view of the superposition of the warp and weft yarns, the tip of a nail, not finding openings between the yarns among which it can pene- trate, always meets the resistance of the yarn. The coating of silicates-based poliurethane further deter- mines the blocking therebetween of the warp and weft yarns and the compacting of the structure, by also contributing to the obstruction of the interfibrous and intrafibrous interstices. An insole according to the invention further shows the advantage of being able to be used in the manufactur- ing of accident-prevention footwears made with the Strobel technique. These and further advantages of the invention will re- sult apparent, together with the technical features, from the following detailed description of a non lim- iting example of embodiment. In the drawings: - Fig. 1 diagramatically shows a sectional view of an insole according to the invention; - Fig. 2 shows the interlock ratio of the fabric used for the execution of the. insole of Fig. 1; - Fig. 3 diagramatically shows the warp profile of the fabric of Fig. 2; - Fig. 4 diagramatically shows the insole of Fig. 1 sewn to the upper of an accident-prevention footwear manufactured with Strobel technique. Referring to the Figures 1-3, an anti-perforation in- sole 1 according to the invention includes a multi- layer 10 consisted of at least four layers of a fabric 12.. with a double face weft, made of high toughness polyester fibers, coupled together through a thermo- plastic film or an adhesive resin. Each of the fabric layers shows a surface treated by means of a coating 14 (shown in Fig. 1 with enlarged thickness with re- spect to the reality) of polyurethane and/or acrylic resin enriched with micronized ceramic materials in form of silicates, for example of aluminium. For a more effective protection, it is preferable to use five layers of fabric 12 having the coating 14. The surface layer of the multilayer 10 constituting the insole 1 preferably shows the higher face (the one intended for being faced inwardly the footwear) which is not treated for a better comfort of the user. Advantageously, as it can be seen from Fig. 1, the used fabric shows a face with a heavy opposed spine- type weave and a face with a weave of the derived satin-type. Surprisingly, it has been detected that by using the fabric and the coating above described, it is possible to carry out an exclusively textile effective struc- ture, which resists to the perforating action of a nail, only using high toughness non-aramidic fibers, and therefore much more economic. In particular, for an insole according to the inven- tion, it is advantageous to use 1100 dtex polyester yarns, with a toughness of 67,5 - 80 cN/dtex, in a number of 22 ± 2% per cm. for the warp and 29 ± 2% per cm. for the weft. The used weaves allow to carry out fabrics with yarns very close together, by making the structure of the same very bound for being able to already afford, per se, a quite good resistance to the penetration, still maintaining a high flexibility. In particular, the composite weave used for the fabric in polyester fibers has proved particularly effective in the execution of the multilayer 10. The coupling between the layers of fabric can occur by hot calendering and by means of thermoplastic films (or adhesive resins) interposed between the layers of the structure. The finished insole shows a limited thickness (about 3 mm. ) and an adequate flexibility.' The tests carried out shown, in fact, the conformity of an insole (including 5 layers of fabric with a sur- face ceramic treatment) in conformity of the invention to the EN12568, ISO EN20344, ANSI Z41 and CSA regula- tions. In Fig. 4 an insole 1 is shown, according to the in-. vention, sewn according to the Strobel technique to the upper 20 of an accident-prevention footwear, equipped with a metal tip 22. The invention thus conceived is susceptible of various modifications and variations, all lying within the am- bit of the inventive concept. Furthermore, all the de- tails can be replaced by technically equivalent ele- ments. WE CLAIM: 1. Anti-perforation insole for footwear, having a multilayer consisting of at least four layers of a fabric double-faced by weft and made of high tenacity polyester fibers coupled together through a thermoplastic film or an adhesive resin, each of the fabric layers having a ceramic surface treatment. 2. Anti-perforation insole as claimed in claim 1, wherein the ceramic surface treatment is obtained by smearing the fabric layer with a polyurethane and/or acrylic resin enriched with powders of hard and abrasive materials. 3. Anti-perforation insole as claimed in claim 2, wherein the hard and abrasive materials are micronized ceramic materials in form of silicates, such as herein described. 4. Insole as claimed in anyone of the preceding claims, wherein said fabric layers are in a number of five. 5. Insole as claimed in anyone of the preceding claims, wherein the surface layer of said multilayer has the upper face, intended for being faced inwardly the footwear, which is not treated. 6. Insole as claimed in anyone of the preceding claims, wherein said fabric has a face with a derived spine type weave and a face with a derived satin-type weave . 7. Insole as claimed in anyone of the preceding claims, wherein, in said fabric, 1100 dtex polyester yarns, with a tenacity of 67,5 - 80 cN/dtex, in a number of 22 ± 2% per cm for the warp and 29 ± 2% per cm for the weft are used. 8. Anti-perforation insole as claimed in anyone of the preceding claims, which is capable of being used as a protective insert within insoles of accident-prevention footwear. 9. A method for manufacturing accident-prevention footwear comprising an upper and a sole, wherein the sole is directly produced on the upper by injection molding, and wherein an insole as claimed in anyone of claims from 1 to 7 is previously sewn to said upper. 10. A method for manufacturing accident-prevention footwear, which comprises sewing an anti- perforation insole as claimed in anyone of claims 1 to 7 to an upper of the footwear by Strobel technique. 11. The method as claimed in claim 10, wherein the anti-perforation insole is exclusively made from a non-aramidic textile material. There is disclosed an anti-perforation insole (1) for footwear, having a multilayer (10) consisting of at least four layers of a fabric (12) double-faced by weft and made of high tenacity polyester fibers coupled together through a thermoplastic film or an adhesive resin, each of the fabric layers having a ceramic surface treatment (14).

Full Text

DESCRIPTION
The present invention relates to an anti-perforation
insole for footwears and, in particular, an anti-
perforation insole made of a textile material espe-
cially suitable for the use in the manufacturing of
accident-prevention footwears with Strobel technique.
Anti perforation insoles made of a textile material
are shown, among others, in US 6368989 (relating to a
multilayer in exclusively aramidic fibers) and WO
00/41583 (relating to a multilayer including at least
a layer with high energy absorption ability in poly-
nornbornene).
The same Applicant is the owner of the pending patent
applications for invention No. PO2003A000005 and
PCT/IT/2004/000208 relating to multilayered textile
structures resistant to the perforation, wherein high'
toughness aramidic and non aramidic fibers are used
and the single layers show a surface ceramic treat-
ment .
Also ballistic protections are known, wherein multi-
layered textile structures are employed, which are
however conceived in order to resist to the violent
impact of a bullet and not to the penetration of nails
(the EN 12568 regulation foresees that an anti-perforation insole resists to a
force of at least 1.100 N exerted by a nail advanced at the speed of 10 mm/min.
± 3 mm/min.).
The aim of the present invention is to provide an anti-perforation insole which
is exclusively made in a non aramidic textile material and which, also being
resistant to the penetration of a nail in accordance with the regulation in
force, can be sewn to the upper of a footwear manufactured with Strobel
technique.
Accordingly, the present invention provides anti-perforation insole for
footwear, having a multilayer consisting of at least four layers of a fabric
double-faced by weft and made of high tenacity polyester fibers coupled
together through a thermoplastic film or an adhesive resin, each of the fabric
layers having a ceramic surface treatment.
The present invention also provides a method for manufacturing accident-
prevention footwear comprising an upper and a sole, wherein the sole is
directly produced on the upper by injection molding, and wherein an insole
according to.this invention, as described herein is previously sewn to said upper.
As mentioned hereinbefore, the anti-perforation insole is, preferably, sewn to
the upper by Strobel technique, and also preferably, the insole is exclusively
made from a non-aramidic textile material.
In particular, the fabric shows a face with a weave of the derived spine-type
and a face with a weave of the derived satin-type.
The surface ceramic treatment is carried out through smearing with a
polyurethane and/or acrylic resin enriched with powders of hard and abrasive
materials, preferably micronized ceramic materials in form of silicates, for
example of aluminium.
Among the advantages obtained with an insole according
to the invention, there is the fact that the double-
faced fabric employed shows a high density of yarns
(in particular of weft) and a very compact structure.
In particular, in view of the superposition of the
warp and weft yarns, the tip of a nail, not finding
openings between the yarns among which it can pene-
trate, always meets the resistance of the yarn. The
coating of silicates-based poliurethane further deter-
mines the blocking therebetween of the warp and weft
yarns and the compacting of the structure, by also
contributing to the obstruction of the interfibrous
and intrafibrous interstices.
An insole according to the invention further shows the
advantage of being able to be used in the manufactur-
ing of accident-prevention footwears made with the
Strobel technique.
These and further advantages of the invention will re-
sult apparent, together with the technical features,
from the following detailed description of a non lim-
iting example of embodiment.
In the drawings:
- Fig. 1 diagramatically shows a sectional view of an
insole according to the invention;
- Fig. 2 shows the interlock ratio of the fabric used
for the execution of the. insole of Fig. 1;
- Fig. 3 diagramatically shows the warp profile of the
fabric of Fig. 2;
- Fig. 4 diagramatically shows the insole of Fig. 1
sewn to the upper of an accident-prevention footwear
manufactured with Strobel technique.
Referring to the Figures 1-3, an anti-perforation in-
sole 1 according to the invention includes a multi-
layer 10 consisted of at least four layers of a fabric
12.. with a double face weft, made of high toughness
polyester fibers, coupled together through a thermo-
plastic film or an adhesive resin. Each of the fabric
layers shows a surface treated by means of a coating
14 (shown in Fig. 1 with enlarged thickness with re-
spect to the reality) of polyurethane and/or acrylic
resin enriched with micronized ceramic materials in
form of silicates, for example of aluminium.
For a more effective protection, it is preferable to
use five layers of fabric 12 having the coating 14.
The surface layer of the multilayer 10 constituting
the insole 1 preferably shows the higher face (the one
intended for being faced inwardly the footwear) which
is not treated for a better comfort of the user.
Advantageously, as it can be seen from Fig. 1, the
used fabric shows a face with a heavy opposed spine-
type weave and a face with a weave of the derived
satin-type.
Surprisingly, it has been detected that by using the
fabric and the coating above described, it is possible
to carry out an exclusively textile effective struc-
ture, which resists to the perforating action of a
nail, only using high toughness non-aramidic fibers,
and therefore much more economic.
In particular, for an insole according to the inven-
tion, it is advantageous to use 1100 dtex polyester
yarns, with a toughness of 67,5 - 80 cN/dtex, in a
number of 22 ± 2% per cm. for the warp and 29 ± 2% per
cm. for the weft.
The used weaves allow to carry out fabrics with yarns
very close together, by making the structure of the
same very bound for being able to already afford, per
se, a quite good resistance to the penetration, still
maintaining a high flexibility.
In particular, the composite weave used for the fabric
in polyester fibers has proved particularly effective
in the execution of the multilayer 10.
The coupling between the layers of fabric can occur by
hot calendering and by means of thermoplastic films
(or adhesive resins) interposed between the layers of
the structure. The finished insole shows a limited
thickness (about 3 mm. ) and an adequate flexibility.'
The tests carried out shown, in fact, the conformity
of an insole (including 5 layers of fabric with a sur-
face ceramic treatment) in conformity of the invention
to the EN12568, ISO EN20344, ANSI Z41 and CSA regula-
tions.
In Fig. 4 an insole 1 is shown, according to the in-.
vention, sewn according to the Strobel technique to
the upper 20 of an accident-prevention footwear,
equipped with a metal tip 22.
The invention thus conceived is susceptible of various
modifications and variations, all lying within the am-
bit of the inventive concept. Furthermore, all the de-
tails can be replaced by technically equivalent ele-
ments.
WE CLAIM:
1. Anti-perforation insole for footwear, having a multilayer consisting of at least four layers of a
fabric double-faced by weft and made of high tenacity polyester fibers coupled together through a
thermoplastic film or an adhesive resin, each of the fabric layers having a ceramic surface treatment.
2. Anti-perforation insole as claimed in claim 1, wherein the ceramic surface treatment is obtained
by smearing the fabric layer with a polyurethane and/or acrylic resin enriched with powders of hard and
abrasive materials.
3. Anti-perforation insole as claimed in claim 2, wherein the hard and abrasive materials are
micronized ceramic materials in form of silicates, such as herein described.
4. Insole as claimed in anyone of the preceding claims, wherein said fabric layers are in a number
of five.
5. Insole as claimed in anyone of the preceding claims, wherein the surface layer of said multilayer
has the upper face, intended for being faced inwardly the footwear, which is not treated.
6. Insole as claimed in anyone of the preceding claims, wherein said fabric has a face with a
derived spine type weave and a face with a derived satin-type weave .
7. Insole as claimed in anyone of the preceding claims, wherein, in said fabric, 1100 dtex polyester
yarns, with a tenacity of 67,5 - 80 cN/dtex, in a number of 22 ± 2% per cm for the warp and 29 ± 2%
per cm for the weft are used.
8. Anti-perforation insole as claimed in anyone of the preceding claims, which is capable of being
used as a protective insert within insoles of accident-prevention footwear.
9. A method for manufacturing accident-prevention footwear comprising an upper and a sole,
wherein the sole is directly produced on the upper by injection molding, and wherein an insole as
claimed in anyone of claims from 1 to 7 is previously sewn to said upper.
10. A method for manufacturing accident-prevention footwear, which comprises sewing an anti-
perforation insole as claimed in anyone of claims 1 to 7 to an upper of the footwear by Strobel
technique.
11. The method as claimed in claim 10, wherein the anti-perforation insole is exclusively made
from a non-aramidic textile material.

There is disclosed an anti-perforation insole (1) for footwear, having a multilayer (10)
consisting of at least four layers of a fabric (12) double-faced by weft and made of high tenacity
polyester fibers coupled together through a thermoplastic film or an adhesive resin, each of the fabric
layers having a ceramic surface treatment (14).

Documents:

01586-kolnp-2007-abstract.pdf

01586-kolnp-2007-claims.pdf

01586-kolnp-2007-correspondence others.pdf

01586-kolnp-2007-description complete.pdf

01586-kolnp-2007-drawings.pdf

01586-kolnp-2007-form 1.pdf

01586-kolnp-2007-form 3.pdf

01586-kolnp-2007-form 5.pdf

01586-kolnp-2007-international publication.pdf

01586-kolnp-2007-international search report.pdf

01586-kolnp-2007-priority document.pdf

1586-KOLNP-2007-ABSTRACT 1.1.pdf

1586-KOLNP-2007-AMANDED CLAIMS.pdf

1586-KOLNP-2007-ASSIGNMENT.pdf

1586-KOLNP-2007-ASSIGNMENT1.1.pdf

1586-KOLNP-2007-CORRESPONDENCE 1.1.pdf

1586-KOLNP-2007-CORRESPONDENCE.pdf

1586-KOLNP-2007-DESCRIPTION (COMPLETE) 1.1.pdf

1586-KOLNP-2007-DRAWINGS 1.1.pdf

1586-KOLNP-2007-EXAMINATION REPORT.pdf

1586-KOLNP-2007-FORM 1 1.1.pdf

1586-KOLNP-2007-FORM 18.pdf

1586-KOLNP-2007-FORM 2.pdf

1586-KOLNP-2007-FORM 3 1.1.pdf

1586-KOLNP-2007-FORM 3.pdf

1586-KOLNP-2007-FORM 5.pdf

1586-KOLNP-2007-GPA.pdf

1586-KOLNP-2007-GRANTED-ABSTRACT.pdf

1586-KOLNP-2007-GRANTED-CLAIMS.pdf

1586-KOLNP-2007-GRANTED-DESCRIPTION (COMPLETE).pdf

1586-KOLNP-2007-GRANTED-DRAWINGS.pdf

1586-KOLNP-2007-GRANTED-FORM 1.pdf

1586-KOLNP-2007-GRANTED-FORM 2.pdf

1586-KOLNP-2007-GRANTED-SPECIFICATION.pdf

1586-KOLNP-2007-OTHERS 1.1.pdf

1586-KOLNP-2007-OTHERS.pdf

1586-KOLNP-2007-PETITION UNDER RULE 137.pdf

1586-KOLNP-2007-REPLY TO EXAMINATION REPORT.pdf

abstract-01586-kolnp-2007.jpg

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Patent Number

250189

Indian Patent Application Number

1586/KOLNP/2007

PG Journal Number

50/2011

Publication Date

16-Dec-2011

Grant Date

14-Dec-2011

Date of Filing

03-May-2007

Name of Patentee

LENZI EGISTO S.P.A.

Applicant Address

VIA G. DI VITTORIO, 39-LOC, GABOLANA, 59021, VAIANO (PO)

Inventors:

#	Inventor's Name	Inventor's Address
1	FENZI, ROBERTO	VIA DI FALTUGNANO 45, 59021, VAIANO (PRATO)

PCT International Classification Number

B32B 5/26,A43B 7/32

PCT International Application Number

PCT/IB2005/003228

PCT International Filing date

2005-10-11

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	PO2004A0005	2004-10-14	Italy