D - Textiles – Paper – 01 – F
Patent
D - Textiles, Paper
01
F
D01F 8/10 (2006.01) A01K 91/00 (2006.01) D01F 6/12 (2006.01)
Patent
CA 2539888
A monofilament obtained from a vinylidene fluoride resin by melt spinning and stretching is subjected to a high-temperature relaxation treatment in which the monofilament is heat-treated in an oil bath heated at 140-175~C for a period as extremely short as 0.05 to 0.5 seconds. Thus, a vinylidene fluoride resin monofilament is produced which is made of a vinylidene fluoride resin having an inherent viscosity of 1.40 dl/g or higher and which has a knot tenacity of 600 MPa or higher. It further has such excellent resistance to twisting that the twisting index of the monofilament, which is measured after 1-minute application of a tensile load about 50% of the maximum tensile load (JIS K 7113), release from the load, and subsequent 3-hour standing, is 0.9 or higher.
L'invention concerne un monofilament de résine de fluorure de vinylidène fabriqué en filage par fusion et étirage, qui subit un traitement de relaxation haute température, à savoir un traitement thermique dans un bain d'huile chauffé à 140-175· C entre 0,05 et 0,5 seconde. Le produit a une viscosité inhérente supérieure ou égale à 1,4 dl/g et une résistance de noeud supérieure ou égale à 600 Mpa. Il dispose en outre d'une excellente résistance à la torsion, si bien que son indice de torsion, mesuré après application d'une charge de traction correspondant environ à 50 % de la charge de traction maximum (JIS K 7113), libération de cette charge et repos pendant trois heures, est supérieur ou égal à 0,9.
Hashimoto Satoshi
Hino Masayuki
Mizuno Toshiya
Satou Masaru
Fetherstonhaugh & Co.
Kureha Corporation
LandOfFree
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