Charge-generating thread for bacterium-countermeasure, cloth for bacterium-countermeasure, cloth, clothing article, medical member, charge-generating thread that acts on living body, and charge-generating thread for substance-adsorption

Patent metadata

Field	Value
Publication number	US-2021269948-A1
Application number	US-202117324293-A
Country	US
Kind code	A1
Filing date	May 19, 2021
Priority date	Jun 6, 2016
Publication date	Sep 2, 2021
Grant date	—

Abstract

A piezoelectric thread that includes a core thread; and a piezoelectric film wound around the core thread. The piezoelectric thread is constructed to generate a charge by energy imparted from outside of the piezoelectric thread.

First claim

1 . A piezoelectric thread comprising:
a core thread; and a piezoelectric film wound around the core thread, wherein the piezoelectric thread is constructed to generate a charge by energy imparted from outside of the piezoelectric thread.

2 . The piezoelectric thread according to claim 1 , wherein the piezoelectric film comprises polylactic acid.

3 . The piezoelectric thread according to claim 2 , wherein the core thread comprises a natural or chemical fiber.

4 . The piezoelectric thread according to claim 3 , wherein the core thread comprises polylactic acid.

5 . The piezoelectric thread according to claim 1 , wherein the core thread comprises a natural or chemical fiber.

6 . The piezoelectric thread according to claim 5 , wherein the core thread comprises polylactic acid.

7 . The piezoelectric thread according to claim 1 , wherein the core thread is an electroconductive thread.

8 . The piezoelectric thread according to claim 1 , wherein the piezoelectric film is a monoaxially drawn film, and the piezoelectric film is wound around the core thread such that a drawn direction if the piezoelectric film is inclined relative to an axial direction of the piezoelectric thread.

9 . A cloth comprising a plurality of the piezoelectric threads according to claim 1 , the cloth having an antibacterial activity value A of >2.2 after culturing for at least 18 hours while the plurality of piezoelectric threads generate a charge by the energy imparted from the outside of the piezoelectric thread.

10 . The cloth according to claim 9 , wherein the plurality of piezoelectric threads are in a woven configuration, and the woven configuration is configured to generate an electric field between a first thread and a second thread of the plurality of threads due to a difference in electric potential therebetween.

11 . The cloth according to claim 10 , wherein the first thread and the second thread are configured to generate a current due to a difference in electric potential between the first thread and the second thread.

12 . The cloth according to claim 10 , wherein the first thread generates a first charge that is different in polarity a second charge generated by the second thread.

13 . The cloth according to claim 10 , wherein, in the woven configuration, the first thread is arranged in parallel with the second thread.

14 . The cloth according to claim 10 , wherein, in the woven configuration, the first thread is arranged to cross the second thread.

15 . The cloth according to claim 10 , further comprising a third thread, and wherein the first thread, the second thread, and the third thread are braided together.

16 . A clothing article comprising the cloth according to claim 9 .

17 . A medical member comprising the clothing article according to claim 16 .

Assignees

• Murata Manufacturing Co

Inventors

• Ando Masamichi
• Ishino Satoshi

Classifications

• D03D15/50

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

• D03D15/283

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

• D02G3/02

  Yarns or threads characterised by the material or by the materials from which they are made · CPC title

• D02G3/449 Primary

  Yarns or threads with antibacterial properties (filaments containing agents inhibiting growth of microorganisms D01F1/103) · CPC title

• A01N37/36

  containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids · CPC title