# US 5,702,798 A · Composite material with controlled elasticity

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- Number: US 5,702,798 A
- Document ID: US5702798A
- Status: Granted
- Kind: A
- Application number: 08/491,639
- Filed: 1995-06-19
- Granted: 1997-12-30
- Earliest claimed: 1994-06-20
- Assignees: Nippon Petrochemicals Company, Limited
- Inventors: Yukio Sugita; Kintaro Aihara; Sadayuki Ishiyama; Jun Yamada
- Web page: https://patentgrep.com/patent/US5702798A

## CPC

- A41D 31/185: {using layered materials}
- A61F 13/4902: {characterised by the elastic material}
- A61F 13/56: Supporting or fastening means
- B29C 55/06: parallel with the direction of feed
- B29C 55/08: transverse to the direction of feed
- B29D 28/00: Producing nets or the like, {e.g. meshes, lattices}(by knotting D04G)
- B32B 5/022: {Non-woven fabric}
- B32B 5/08: the fibres or filaments of a layer being of different substances {, e.g. conjugate fibres, mixture of different fibres}
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 25/04: comprising rubber as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/043; next to a bituminous or tarry layer B32B11/044; next to a water setting substance layer B32B13/042; next to a metal layer B32B15/06; next to a glass layer B32B17/063; next to a layer formed of natural mineral fibres or particles B32B19/043; next to a wood layer B32B21/045; next to a cellulosic plastic layer B32B23/046)}
- B32B 25/10: next to a fibrous or filamentary layer
- B32B 25/14: comprising {synthetic rubber copolymers (B32B25/18 and B32B25/20 take precedence)}
- B32B 38/0008: {Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation (heat treatment B32B38/0036)}
- B32B 38/0012: {Mechanical treatment, e.g. roughening, deforming, stretching}
- D04H 13/02: Production of non-woven fabrics by partial defibrillation of oriented thermoplastics films
- A61F 2013/49023: {being textured, e.g. corrugated}
- A61F 2013/49031: {being elastic in longitudinal direction}
- A61F 2013/49033: {being elastic in transversal direction}
- B29C 55/00: Shaping by stretching, e.g. drawing through a die; Apparatus therefor (B29C61/08 takes precedence)
- B32B 37/153: {at least one layer is extruded and immediately laminated while in semi-molten state}
- B32B 2038/0028: {Stretching, elongating}
- B32B 2038/045: {Slitting}
- B32B 2307/516: mono-axially
- B32B 2310/14: Corona, ionisation, electrical discharge, plasma treatment
- Y10T 428/24273: including aperture
- Y10T 428/24298: Noncircular aperture [e.g., slit, diamond, rectangular, etc.]
- Y10T 428/24306: Diamond or hexagonal
- Y10T 428/24331: including nonapertured component
- A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A controlled elastic composite material which is produced by forming a flexible elastomer layer or layers on one or both surfaces of at least one member selected from the group consisting of (a) a longitudinally monoaxially oriented reticular web, (b) a transversally monoaxially oriented reticular web, (c) a woven or non-woven fabric composed of monoaxially oriented tapes, and (d) a stretched long fiber web in which long fibers are aligned almost in one direction.

## Claims

### Claim 1

A controlled elastic composite material comprising a flexible elastomeric layer and a first oriented layer, said first oriented layer formed of a thermoplastic resin selected from the group consisting of (a) a longitudinally monoaxially oriented reticular film; (b) a transversely monoaxially oriented reticular film; and (c) a plurality of monoaxially stretched or rolled tapes disposed in parallel.

### Claim 2 (depends on 1)

A material in accordance with claim 1 comprising a second oriented layer formed of a thermoplastic material selected from the group consisting of (a), (b) and (c) wherein said first and said second oriented layers are disposed at an angle of from 10.degree. to 80.degree. relative to each other.

### Claim 3 (depends on 1)

A material in accordance with claim 1 wherein said first oriented layer is a multilayered film formed by laminating a second thermoplastic resin layer on one or both surfaces of a first thermoplastic resin layer with the proviso that the melting point of said second thermoplastic resin is lower than that of said first thermoplastic resin.

### Claim 4 (depends on 1)

A material in accordance with claim 1 wherein the ratio of orientation of said first oriented layer is in the range of 1.1 to 15.

### Claim 5 (depends on 2)

A material in accordance with claim 2 wherein said second oriented layer is (c) and wherein said plurality of tapes are a pair of woven or non-woven fabrics.

### Claim 6

A controlled elastic composite material comprising a flexible elastomeric layer and an oriented layer, said oriented layer comprising a first and a second oriented material crosswise laminated with each other at an intersecting angle of between 10.degree. and 80.degree., said first and said second oriented materials being the same or different and selected from the group consisting of (a) a longitudinally monoaxially oriented reticular web; (b) a transversely monoaxially oriented reticular web; (c) a plurality of monoaxially stretched or rolled tapes which are disposed in parallel; and (d) a web which includes a plurality of fibers aligned in one direction and then stretched or rolled in that direction.

### Claim 7 (depends on 6)

A material in accordance with claim 6 wherein said oriented layer is (c) and wherein said plurality of monoaxially stretched or rolled tapes disposed in parallel is a pair of woven or non-woven fabric webs.

### Claim 8 (depends on 6)

A material in accordance with claim 6 wherein said monoaxially oriented material is selected from the group consisting of (a), (b) and (c) and wherein said materials are made from a multilayered film formed by laminating a second thermoplastic resin layer on one or both surfaces of a first thermoplastic resin layer with the proviso that the melting point of said second thermoplastic resin is lower than that of first thermoplastic resin.

### Claim 9 (depends on 6)

A material in accordance with claim 6 wherein the ratio of orientation of said monoaxially oriented material is in the range of between 1.1 and 15 and wherein said monoaxially oriented material is selected from the group consisting of (a), (b) and (c).

### Claim 10 (depends on 6)

A material in accordance with claim 6 wherein said monoaxially oriented material is (d) and wherein the ratio of stretching or rolling of said long fibers is in the range of between 5 and 20 and the fineness of said fibers is in the range of between 0.01 and 10 denier.

### Claim 11 (depends on 6)

A material in accordance with claim 6 wherein said monoaxial material is (d) and wherein said fibers are composed of conjugate fiber consisting of a high melting point material and a low melting point material.

### Claim 12

A controlled elastic composite material comprising a flexible elastomer layer and an oriented layer, said oriented layer including at least one monoaxially oriented fiber web having a plurality of fibers aligned in one direction and stretched or rolled in said direction.

### Claim 13 (depends on 12)

A material in accordance with claim 12 wherein said oriented layer is formed by crosswise laminating a pair of monoaxially oriented fiber webs at an intersecting angle of between 10.degree. and 80.degree..

### Claim 14 (depends on 12)

A material in accordance with claim 12 wherein the ratio of stretching of said monoaxially oriented long fiber web is in the range of between 5 and 20 to produce a fineness in the range of between 0.01 and 10 denier.

### Claim 15 (depends on 12)

A material in accordance with claim 12 wherein said monoaxially oriented fiber web is composed of conjugate fibers consisting of a high melting point material and a low melting point material.