Crimped polyester-yarn from cold drawn polyester-POY-yarn and process for its manufacture

• US 4,908,269 A
• Filed: 08/09/1984
• Issued: 03/13/1990
• Est. Priority Date: 12/17/1982
• Status: Expired due to Fees

• Current Assignee: Rhone-Poulenc Viscosuisse SA
• Original Assignee: Rhone-Poulenc Viscosuisse SA
• Inventors: Schaffner, Paul, Specker, Hugo
• Primary Examiner(s): KENDELL, LORRAINE
• Application Number:
  US06/642,919
• Time in Patent Office: 2,042 Days
• Field of Search: 57/246, 428/369, 428/362, 428/364, 428/371, 264/210.7, 264/210.8, 264/176 F, 264/168
• US Class Current: 428/369
• CPC Class Codes: D01D 5/22 with a crimped or curled structure; with a special structure to simulate wool producing crimped or curled effects in filaments or threads after formation D02G1/00
• CPC Class Codes: D02G 1/00 Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics yarns per se D02G3/00; during formation of artificial filaments, threads, or the like D01D5/22; general aspects of chemical treatment D06M
• CPC Class Codes: Y10T 428/2909 Nonlinear [e.g., crimped, coiled, etc.]
• CPC Class Codes: Y10T 428/2913 Rod, strand, filament or fiber
• CPC Class Codes: Y10T 428/2922 Nonlinear [e.g., crimped, coiled, etc.]

Abstract

The invention concerns a crimped Polyester-yarn obtained from cold drawn Polyester-POY as well as a process for its manufacture.

For this yarn the stress/strain course between 10 and 30% elongation resulting from the stretch test corresponds to a secant modul of 0-100%. Application in the knitting, weaving and warp knitting.

Claims

1. Crimped polyester yarn obtained from cold drawn partially-oriented polyester yarn, said crimped polyester yarn having a secant modulus of 0-100% as determined by the stress versus strain curve for said crimped polyester yarn between 10% and 30% elongation.

2. Crimped polyester yarn according to claim 1 wherein individual fibrils of said yarn have an irregular crimp.

3. Crimped polyester yarn according to claims 1 or 2 which is twistless.

4. Crimped polyester yarn according to claims 1 or 2 which is shrunk up to 60% of its unshrunk length.

5. Crimped polyester yarn according to claim 3 which is shrunk up to 60% of its unshrunk length.