Cloth and protective product

Patent metadata

Field	Value
Publication number	US-11846047-B2
Application number	US-201917297845-A
Country	US
Kind code	B2
Filing date	Dec 10, 2019
Priority date	Dec 17, 2018
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

Provided are a cloth and a protective product, which allow for any color appearance and have excellent protection performance against electric arcs. The cloth has a woven fabric structure, wherein a front-surface spun yarn containing an infrared absorber- and/or electrically conductive agent-containing fiber and not containing carbon is located on a front surface, while a back-surface spun yarn containing a carbon-containing fiber is located on a back surface, and the cloth has an ATPV value of 8.0 cal/cm2 or more in Arc Resistance Test ASTM F1959-1999.

First claim

The invention claimed is:

1. A cloth comprising a woven fabric structure, characterized in that a front-surface spun yarn containing an infrared absorber- and/or electrically conductive agent-containing fiber and not containing carbon is located on a front surface, while a back-surface spun yarn containing a carbon-containing fiber is located on a back surface, and the cloth has an ATPV value of 8.0 cal/cm 2 or more in Arc Resistance Test ASTM F1959-1999,
and the front-surface spun yarn is a spun yarn containing a meta-type wholly aromatic polyamide fiber in an amount of 30 to 95 wt %, a para-type wholly aromatic polyamide fiber in an amount of 3 to 40 wt %, and an infrared absorber- and/or electrically conductive agent-containing fiber in an amount of 2 to 30 wt %,
and the infrared absorber- and/or electrically conductive agent-containing fiber is a sheath-core conjugate fiber, or an eccentric sheath-core conjugate fiber, in which the sheath is made of acrylic, and the core is made of a polymer containing metal oxide-based particles,
and the front-surface spun yarn contains an aromatic polyamide fiber, and the aromatic polyamide fiber and the infrared absorber- and/or electrically conductive agent-containing fiber contain the same dye in each fiber,
and the exposure of the back-surface spun yarn on the front surface of the cloth is smaller than the exposure of the front-surface spun yarn on the front surface of the cloth,
and the back-surface spun yarn contains carbon in an amount of 0.5 to 50 wt % based on the spun yarn weight,
and carbon is contained in an amount of more than 3.0 wt % based on the cloth weight,
and the cloth has a breathability specified in JIS L 1096:2010, A Method (Frazier Method), of 10 to 100 cc/cm 2 sec,
and the cloth has a cover factor (CF) defined by the following formula of 1,700 to 3,500:
CF =( DWp/ 1.1) 1/2 ×MWp +( DWf/ 1.1) 1/2 ×MWf

[DWp is the warp total fineness (dtex), MWp is the warp weaving density (yarns/2.54 cm), DWf is the weft total fineness (dtex), and MWf is the weft weaving density (yarns/2.54 cm)],
and the weight per unit of the cloth specified in JIS L 1096:2010, A Method, is 120 to 260 g/m 2 ,
and the thickness of the cloth specified in JIS L 1096:2010 is 0.4 to 0.8 mm,
and the cloth has 2/1 twill structure.

2. The cloth according to claim 1 , wherein the back-surface spun yarn includes a carbon-containing meta-type wholly aromatic polyamide fiber and/or para-type wholly aromatic polyamide fiber.

3. The cloth according to claim 1 , wherein the front-surface spun yarn contains the infrared absorber-containing fiber in an amount of 10 to 30 wt %.

4. The cloth according to claim 1 , wherein the front-surface spun yarn contains the electrically conductive agent-containing fiber in an amount of 2 to 20 wt %.

5. A protective product comprising the cloth according to claim 1 and selected from the group consisting of arc protective garments, flame-proof protective garments, work garments, activity garments, gloves, aprons for protection, and members for protection.

Assignees

• Teijin Ltd

Inventors

• Tanaka Kengo
• Iwashita Kenji
• Shimada Hiroki
• Kitamura Atsushi

Classifications

• D03D1/0058 Primary

  Electromagnetic radiation resistant · CPC title

• D03D15/283

  synthetic polymer-based, e.g. polyamide or polyester fibres (cellulose-based artificial fibres D03D15/225) · CPC title

• D03D15/41

  with specific twist · CPC title

• D03D15/47

  multicomponent, e.g. blended yarns or threads (multicomponent fibres or filaments D03D15/292) · CPC title

• D03D15/50

  characterised by the properties of the yarns or threads · CPC title