Polyamide fibers, fiber structure using same, and clothing

Patent metadata

Field	Value
Publication number	US-2017191190-A1
Application number	US-201515314051-A
Country	US
Kind code	A1
Filing date	May 21, 2015
Priority date	May 26, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

Disclosed is a polyamide fiber having a degree of orientation equal to or higher than 0.7 and equal to or lower than 0.85. The polyamide fiber is suitably obtained by forming a polyamide component having high moisture absorbency and a specific soluble component into a conjugated fiber under specific fiber formation conditions.

First claim

1 . A polyamide fiber having a degree of orientation equal to or higher than 0.7 and equal to or lower than 0.85.

2 . The polyamide fiber of claim 1 , having a moisture absorption rate equal to or higher than 5% at a temperature of 35° C. and a humidity of 95% RH, and a water absorption extension rate equal to or higher than 5% at a temperature of 20° C. and a humidity of 65% RH.

3 . The polyamide fiber of claim 1 , obtained by removing, from a conjugated fiber containing a water-soluble thermoplastic polyvinyl alcohol-based polymer and polyamide, the water-soluble thermoplastic polyvinyl alcohol-based polymer by using hot water.

4 . The polyamide fiber of claim 1 , obtained by removing, from a conjugated fiber containing an easily alkali-soluble polyester-based polymer and polyamide, the easily alkali-soluble polyester-based polymer by alkali treatment.

5 . The polyamide fiber of claim 1 , wherein the polyamide is nylon-6.

6 . The polyamide fiber of claim 1 , wherein the polyamide fiber extends and contracts reversibly upon absorbing and releasing water.

7 . A fiber structure, at least part of which is made of the polyamide fiber of claim 1 .

8 . Clothing made of the fiber structure of claim 7 .

9 . The clothing of claim 8 , wherein the clothing is configured as at least one selected from the group consisting of underwear, sportswear, lining, pantyhose, and socks.

Assignees

• Kuraray Co

Inventors

• Nakatsuka Hitoshi
• Kawakado Shinya
• Ikeda Takayuki
• Ohga Daisuke
• Murate Yasunori

Classifications

• D01F6/60 Primary

  from polyamides (from polyamino acids or polypeptides D01F6/68) · CPC title

• D01D5/36

  Matrix structure; Spinnerette packs therefor · CPC title

• D01F8/14

  with at least one polyester as constituent · CPC title

• D06M11/05

  with water, e.g. steam; with heavy water · CPC title

• D06M11/00

  Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising (D06M10/00 takes precedence) · CPC title