# US 11,440,293 B2 · Layered product

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- Number: US 11,440,293 B2
- Document ID: US11440293B2
- Status: Granted
- Kind: B2
- Application number: 16/758,285
- Filed: 2018-09-26
- Published: 2020-10-15
- Granted: 2022-09-13
- Earliest claimed: 2017-10-24
- Assignees: Daikin Industries, Ltd.
- Applicants: Daikin Industries, Ltd.
- Inventors: Masahiko Yamada; Yutaka Nakata
- Web page: https://patentgrep.com/patent/US11440293B2

## CPC

- B32B 17/04: bonded with or embedded in a plastic substance
- B32B 5/024: {Woven fabric}
- B32B 5/026: {Knitted fabric}
- B32B 5/24: one layer being a fibrous or filamentary layer
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 17/10: of synthetic resin
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/28: comprising synthetic resins not wholly covered by any one of the sub-groups {B32B27/30 - B32B27/42}
- B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF}
- B32B 27/322: {comprising halogenated polyolefins, e.g. PTFE}
- D02G 1/165: {characterised by the use of certain filaments or yarns}
- D02G 3/18: from glass or the like
- D03D 15/267: Glass
- D04B 1/14: Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B 21/00: Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- B32B 2250/02: 2 layers
- B32B 2260/021: Fibrous or filamentary layer
- B32B 2260/046: Synthetic resin
- B32B 2262/101: Glass fibres
- B32B 2307/732: Dimensional properties
- D10B 2101/06: Glass
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- D02G: CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D03D: WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D04B: KNITTING
- D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES

## Abstract

The invention provides a layered product in which a glass cloth and a fluororesin-containing sheet are firmly bonded to each other even without providing a layer of polytetrafluoroethylene fine particles and without recrystallizing the fluororesin. The layered product includes, in a layered structure, a fluororesin-containing sheet, a hot-melt resin layer, and a glass cloth. The glass cloth is a fabric including a bulked glass yarn.

## Claims

### Claim 1

A layered product comprising, in a layered structure:
a fluororesin-containing sheet;
a hot-melt resin layer; and
a glass cloth,
the glass cloth being a fabric including a bulked glass yarn,
wherein the fluororesin-containing sheet is a polytetrafluoroethylene (PTFE) sheet having an average specific gravity of 2.175 or higher and a thickness of 1 to 4 mm, and
wherein the bulked glass yarn includes intertwined glass filaments,
the glass cloth includes, on a surface in contact with the hot-melt resin layer, a layer impregnated with the hot-melt resin between strands of the bulked glass yarn and between the glass filaments.

### Claim 2 (depends on 1)

The layered product according to claim 1,
wherein the hot-melt resin layer and the glass cloth are layered so as to be in contact with each other,
the glass cloth is woven in a twill pattern,
the bulked glass yarn is used for at least one selected from a warp and a weft of the glass cloth and appears on a surface in contact with the hot-melt resin layer of the glass cloth.

### Claim 3 (depends on 1)

The layered product according to claim 1,
wherein the bulked glass yarn has a bulking percentage of 101% to 150%.