The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 1989
Filed:
Sep. 24, 1985
Applicant:
Inventors:
Assignee:
Mitsui Petrochemical Industries, ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29B / ;
U.S. Cl.
CPC ...
264555 ; 264211 ; 26421112 ; 26421122 ; 264349 ;
Abstract
A non-water swelling or a water-insoluble thermoplastic resin, water and an assistant for assisting dispersion of water into the thermoplastic resin are melt-kneaded and the kneaded composition is extruded from an orifice under such conditions that flashing of water is prevented. As the assistant, a water-soluble resin or a water-insoluble resin having a carboxylic acid salt group is used optionally in combination with a surface active agent. The spun product is a fiber bundle in which single filaments having a diameter smaller than 100 .mu.m are gathered in parallel to one another, and this fiber bundle is easily opened.