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US 2025/0171933 A1Published application
Process of preparing monofilament and monofilament
AssigneeBASF SE
InventorsDe Hui Yin, Qing Huai Tang, Hui Zhi Yan, Yin Zhang, Dian Jun Chen
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Abstract
A process prepares a monofilament by a) melt-spinning a thermoplastic polyurethane and forming a monofilament; b) cooling the monofilament under a temperature of 0° C. to 40° C.; c) stretching the monofilament by at least two groups of rollers; d) heat-setting the monofilament; and e) winding the monofilament. The thermoplastic polyurethane has a Shore hardness of no less than 65D measured according to DIN ISO 7619-1. The monofilament prepared from the process is also described.
Claims20
A process of preparing a monofilament, comprising:
- (a) melt-spinning a thermoplastic polyurethane and forming a monofilament;
- (b) cooling the monofilament under a temperature of 0° C. to 40° C. to form a cooled monofilament;
- (c) stretching the cooled monofilament by at least two groups of rollers to form a stretched monofilament;
- (d) heat-setting the stretched monofilament to form a heat-set monofilament;
- and
- (e) winding the heat-set monofilament,
- wherein the thermoplastic polyurethane has a Shore hardness of no less than 65D measured according to DIN ISO 7619-1.
4 more elements
Dependencies are inferred from the claim text.