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:
Mar. 11, 1997
Filed:
May. 18, 1995
Applicant:
Inventors:
Hitoshi Uda, Kanagawa, JP;
Tetsuya Takahashi, Kanagawa, JP;
Ryosuke Kamei, Kanagawa, JP;
Takeshi Sano, Kanagawa, JP;
Assignee:
Showa Denko Kabushiki Kaisha, Tojyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D01D / ; D01D / ; D01D / ;
U.S. Cl.
CPC ...
425 66 ; 2642108 ; 26421115 ; 26421117 ; 264237 ; 425 722 ;
Abstract
An apparatus for producing multifilaments having high fiber strength is disclosed. A spinneret melt spins a polyolefin at a first temperature into filaments. A cooling duct cools the filaments via convection at a second temperature. A chill roll, disposed downstream from the cooling duct, has a third temperature, and forcibly conductively cools the filaments. Finally, heated drawing rolls, disposed downstream from said chill roll, continuously draw the filaments at a high draw ratio.