FIBER PRODUCTS WITH DIFFERENT FRONT AND BACK FUNCTIONS - low-temperature plasma treatment

Sep 21, 2026

Japanese Kokai Patent No. Sho 59[1984]-106569 describes fiber products that provide different surface properties on the front and back. The invention achieves hydrophilicity on one side by performing a low-temperature plasma treatment with an inorganic gas containing oxygen, under a pressure range of 0.01–10 torr. Claims cover fabrics woven, knitted, or nonwoven using nylon, polyester, acrylic, polypropylene, acetate, or mixed spun fibers, with inorganic gas composition defined by at least 10 vol% oxygen.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages34

Reading Time1 h 26 min

AccessFree to download

Claims

Claim 1

Claim 2

Claim 3

Detailed explanation of the invention

Ueno,Susumu Fiber products with different front and backfunctions /by Susumu Ueno and others.10 p.:ill. Patent(Japanese)No.59-106569(1984).Filed:TRANSLATION NO.4644. Japanese Kokai Patent No.Sho 59[1984]-106569 # JAPANESE PATENT OFFICEPATENT JOURNAL KOKAI PATENT NO.: Sho 59[1984]-106569 Int.c₁³.:D 06 M 10/00 Sequence Nos.for Office Use: 7199-4L Application No.: Sho 57[1982]-212387 Application Date: December 3,1982 Publication Date: July 20,1984 FIBER PRODUCTS WITH DIFFERENT FRONT AND BACK FUNCTIONS Inventors: Susumu Ueno Polyvinyl ChlorideResearch Laboratory Shinetsu Kagaku Kogyo K.K.1 Ohaza Higashi Wada Kamikurusu-Cho,Kashima-GunIbaraki-Ken,Japan Hirokazu NomuraSame Address as Above Shinobu HashizumeNikka Kagaku Kogyo K.K.23-1 Bunkyo 4-ChomeFukui-Shi,Japan Toshiaki NishiideEmori Shoji K.K.6-23 Keya 1-ChomeFukui-Shi,Japan Shinetsu Kagaku Kogyo K.K.6-1 Ohtemachi 2-chomeChiyoda-Ku,Tokyo,Japan Applicants: Nikka Kagaku Kogyo K.K.23-1 Bunkyo 4-chomeFukui-Shi,Japan Digitized by the Internet Archivein 2016 https://archive.org/details/fiberproductswit00ueno Page 2 Emori Shoji K.K.6-23 Keya l-chomeFukui-Shi,Japan Ryoichi,patent attorney Agent: # Claims 1.Fiber products with different front and back functions,ascharacterized by performing a low-temperature plasma treatmentwith an inorganic gas under a gas pressure of 0.01-10 torr tobestow hydrophily to one side of the fiber product containing atleast 50%synthetic fibers or semisynthetic fibers. 2. The fiber products with different front and back functionsdescribed in Claim 1,wherein said fiber product is a woven,knitted or unwoven cloth made of nylon,polyester,acrylic, polypropylene or acetate fibers,or a mixed spun fiber containingat least 50%such fibers. 3.The fiber products with different front and back functionsdescribed in Claim 1,wherein said inorganic gas is an oxygen gasor a gas which contains at least 10 vol%of oxygen gas. # Detailed explanation of the invention This invention relates to a fiber product with differentfront and back functions,and in particular this invention relatesto a fiber product wherein one side of the fiber has the hydro-phobic character of the original fiber and the other side ofthe fiber has hydrophilic property(moisture absorbence,perspir-ation absorbence and so on),without a substantial change in theexternal morphology and/or air permeability. A variety of functions are demanded of recent clothingmaterials,particularly the outdoor wear such as sportswear,and Page 3 the trend is toward a multifunctional composite type in manycases. For example,the materials to be used for such clothingtypically have different front and back functions which arecharacterized by having water repellency on the front yet havinghydrophilic properties such as moisture absorbability and perspir-ation absorbability on the back. Adhesion or coating a proper processing chemical suitablefor the aim on the surface of the fibers is the method of imparting different front and back functions to the fiber productand the coating method is perhaps the fastest way to do the job.Another method is a roller touch process or foaming processingmethod which employs a foaming medium. The prior arts which employed such processing chemicalsoften caused a change in the physical properties of the fibersurface,such as a modification of the external morphology of thefiber,its texture or air permeability. For example,with thecoating process,the external surface of the fiber shows a non-coating surface which is different from the normal surface ofthe fiber and also interferes with the air permeability of thefabrics,all of which are undesirable. On the other hand,withthe roller touching process,the problem of the seeping of chem-icals to the front and back of the fabrics has been great andin addition,both methods caused a deterioration of the "hand"of the processed fabrics or other properties,depending on thetypes

FAQs

What is the core purpose of the fiber product in this patent?

To give one side of the fiber product hydrophobic characteristics while the other side is hydrophilic, without a substantial change in external morphology or air permeability.

How does the invention create different front and back functions?

It uses a low-temperature plasma treatment with an inorganic gas under 0.01–10 torr to impart hydrophilicity to one side.

What kinds of materials and fabric structures are covered by the claims?

The claims cover woven, knitted, or nonwoven cloth made from nylon, polyester, acrylic, polypropylene, or acetate fibers, or mixed spun fibers containing at least 50% of such fibers.

Sep 21, 2026

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