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:
Jun. 25, 2002
Filed:
Jun. 20, 2000
Wolfgang Nölle, Ennepetal, DE;
Barmag AG, Remscheid, DE;
Abstract
A method for false twist texturing a synthetic yarn, as well as the thus-produced crimped yarn, wherein a false twist is produced on the yarn at a speed of a false twist unit, which exceeds 2.2 times of the yarn speed and is above a saturation limit for absorbing a false twist in the yarn. The overtwisted yarn is set in the false twist zone at a temperature higher than 200° C. In proportion with the advancing speed, the withdrawal speed does not exceed 1.4 times the advancing speed, and is below 1,000 m/min. With that, a false twist textured crimped yarn is produced, which has large and small cross sections with curls and bows, which alternate with one another and have opposite directions of twist.