0205960-A2 is referenced by 37 patents and cites 4 patents.

By poststretching, at a temperature between about 135 DEG and 160 DEG C, a polyethylene fiber, which has already been oriented by drawing at a temperature within 5 DEG C of its melting point, an ultra high modulus, very low creep, low shrink, high tenacity polyolefin fiber having good strength retention at high temperatures is obtained. The poststretching can be in multiple stages and/or with previous annealing. The poststretching should be done at a draw rate of less than 1 second. Tensile modulus values over 2,000 g/d (178.6 GPa) for multifilament yarn are consistently obtained for ultrahigh molecular weight polyethylene, with tensile strength values above 30 g/d (2.5 GPa) while at the same time dramatically improving creep [at 160 DEG F (71.1 DEG C) and 39,150 psi (2758.3 kg/cm) load] by values at least 25% lower than fiber which has not been poststretched.; Shrinkaqe is improved to values less than 2.5% of the original length when heated from room temperature to 135 DEG C. Performance at higher temperature is improved by about 15 DEG to 25 DEG C.

Title
Very low creep, ultra high moduls, low shrink, high tenacity polyolefin fiber having good strength retention at high temperatures and method to produce such fiber.
Application Number
EP19860107119 19860526
Publication Number
0205960 (A2)
Application Date
May 26, 1986
Publication Date
December 30, 1986
Inventor
Wincklhofer Robert Charles
Weedon Gene Clyde
Tam Thomas Yiu Tai
Prevorsek Dusan Ciril
Kavesh Sheldon Nmn
Dunbar James Jay
Assignee
Allied
US
IPC
D02J 01/22
D01F 06/04
D01F 06/46
D01F 06/04
D01D 05/00
C08F 10/00
C08F 08/00
C08J 05/00
D01F 06/46
D01F 06/04
D01D 05/04
C08F 10/02
C08F 10/00
C08F 08/00
C08J 05/00
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