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. 11, 1986
Filed:
Sep. 28, 1982
Rudolf Geier, Essen, DE;
Didier Engineering GmbH, Essen, DE;
Abstract
A staple-fiber band is made by first spinning synthetic-resin filaments with spinnerets and drawing the filaments as roving at a predetermined feed speed from the spinnerets. The roving is then cooled without greatly stretching it so it has relatively high residual stretch and is then stored. Without intermediate treatment the roving is heated to a predetermined temperature and then stretched it to a relatively small residual stretch. The stretched roving is then thermofixed and then stretch-torn. Finally it is textured. During the heating, thermofixing, stretch-tearing, and texturing steps the roving is held under tension so that its filaments cannot tangle. When the filaments are of polyester they are stretched at between 60.degree. C. and 120.degree. C. and thermofixed at a temperature that can be somewhat higher.