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. 06, 1989
Filed:
Aug. 31, 1984
Applicant:
Inventors:
Yoshiyuki Sasaki, Takatsuki, JP;
Katsuyuki Kasaoka, Ibaraki, JP;
Assignee:
Teijin Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02G / ; D02J / ; D02J / ;
U.S. Cl.
CPC ...
57245 ; 28220 ;
Abstract
A process for manufacturing a bulky flat yarn comprising: preparing at least two kinds of thermoplastic synthetic undrawn yarns having different natural draw ratios, respectively; simultaneously drawing said prepared yarns at a draw ratio which is equal to or larger than the smallest natural draw ratio of the yarns and which is equal to or smaller than the largest natural draw ratio; and releasing drawing tension in the yarns after they are drawn. The yarns are mixed by means of an interlacing air nozzle before or after they are drawn.