Layered product

Patent metadata

Field	Value
Publication number	US-11440293-B2
Application number	US-201816758285-A
Country	US
Kind code	B2
Filing date	Sep 26, 2018
Priority date	Oct 24, 2017
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

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.

First claim

The invention claimed is:

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.

2. 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.

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

Assignees

• Daikin Ind Ltd

Inventors

• Yamada Masahiko
• Nakata Yutaka

Classifications

• D02G1/165

  characterised by the use of certain filaments or yarns · CPC title

• D10B2101/06

  Glass · CPC title

• B32B27/28

  comprising synthetic resins not wholly covered by any one of the sub-groups {B32B27/30 - B32B27/42} · CPC title

• B32B27/322

  comprising halogenated polyolefins, e.g. PTFE · CPC title

• B32B2307/732

  Dimensional properties · CPC title