Modified cross-section fiber

Patent metadata

Field	Value
Publication number	US-2024093411-A1
Application number	US-202318513836-A
Country	US
Kind code	A1
Filing date	Nov 20, 2023
Priority date	May 25, 2021
Publication date	Mar 21, 2024
Grant date	—

Abstract

A fiber with which a further enhanced electric field intensity is obtained when a compressive force is applied across the longitudinal axis of the fiber. The fiber is composed of a potential generating filament having at least one interior angle of less than 120° in a contour shape in a sectional view in a direction perpendicular to a longitudinal axis of the fiber.

First claim

What is claimed is:

1 . A fiber comprising a potential generating filament having at least one interior angle of less than 120° in a contour shape in a sectional view in a direction perpendicular to a longitudinal axis of the fiber.

2 . The fiber according to claim 1 , wherein the angle measure of the interior angle is 108° or less.

3 . The fiber according to claim 1 , wherein the interior angle is 90° or less.

4 . The fiber according to claim 1 , wherein the interior angle is 60° or less.

5 . The fiber according to claim 1 , wherein the interior angle is 60° to 108°.

6 . The fiber according to claim 1 , wherein the fiber is constructed such that a potential is generated when the fiber is pressed in a direction transverse to the longitudinal axis of the fiber.

7 . The fiber according to claim 6 , wherein the potential is generated by pressing a corner included in the contour shape of the fiber.

8 . The fiber according to claim 7 , wherein the potential is generated by pressing the corner obliquely from a direction perpendicular to the longitudinal axis of the fiber.

9 . The fiber according to claim 8 , wherein the potential is generated by pressing the corner obliquely in a range of 0° to 90° from the direction perpendicular to the longitudinal axis of the fiber.

10 . The fiber according to claim 9 , wherein the potential is generated by pressing the corner obliquely at 45° from a direction perpendicular to the longitudinal axis of the fiber.

11 . The fiber according to claim 1 , wherein the fiber is a hollow fiber.

12 . The fiber according to claim 1 , wherein the fiber has an electric field intensity of 100 kV/m or more or 0.1 V/μm or more.

13 . The fiber according to claim 1 , wherein the fiber contains a piezoelectric material.

14 . The fiber according to claim 13 , wherein the piezoelectric material comprises poly-L-lactic acid.

15 . The fiber according to claim 13 , wherein the piezoelectric material is free of additives.

16 . The fiber according to claim 13 , wherein the piezoelectric material comprises a hydrolysis inhibitor.

17 . The fiber according to claim 1 , wherein the contour shape of the fiber is triangular, quadrangular, pentagonal, or hexagonal.

18 . The fiber according to claim 17 , wherein all vertices of the contour shape are inscribed in a circle.

19 . A yarn comprising the fiber according to claim 1 .

20 . A cloth comprising the yarn according to claim 19 .

Assignees

• Murata Manufacturing Co

Inventors

• Yamanaga Tetsuya
• Mori Kenichi
• Tsuji Masayuki
• Takagi Masayoshi
• Ebina Ryosuke

Classifications

• H10N30/702

  based on piezoelectric or electrostrictive fibres · CPC title

• H10N30/857

  Macromolecular compositions · CPC title

• D02G3/441 Primary

  Yarns or threads with antistatic, conductive or radiation-shielding properties (electroconductive, anti-static or radiation-shielding filaments D01F1/09, D01F1/106; anti-static fabrics D03D15/533; conducting, insulating or anti-static layers for floor coverings D06N7/0042) · CPC title

• H10N30/1061

  Electricity · mapped topic

• D10B2331/04

  polyesters, e.g. polyethylene terephthalate [PET] · CPC title