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:
Nov. 08, 1994
Filed:
Oct. 28, 1993
Applicant:
Inventors:
Maria Toscan, Dietwil, CH;
Remy Humbrecht, Littau, CH;
Assignee:
Viscosuisse S.A., Emmenbrucke, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D / ; D01D / ; D01F / ;
U.S. Cl.
CPC ...
2642108 ; 26421114 ; 2642905 ; 528 76 ; 528 80 ; 528 83 ;
Abstract
In a process for producing melt-spun elastomer threads with a high modulus, a breaking elongation of 80 to 300% and a boiling shrinkage of at least 20%, multifilament elastic threads are obtained by spin-drawing. A molten mass of polyurethane granulate is simultaneously drawn at a drawing factor of at least 1.5 and wound on spools at 600 m/min. or more. The spun-drawn, non-adhesive TPU thread can be processed to form a flat structure, the elasticity of which can be regulated by setting or by tempering in hot water. The thread can also be tempered before being processed in order to acquire the desired elastic properties.