Polyamide-6 fiber with curling effect and preparation method thereof

By controlling temperature and humidity and optimizing cooling parameters, highly stable self-curling nylon 6 fiber was prepared, which solved the problem of balancing curling instability and strength, achieved high elasticity and durability, and is suitable for high-end fabrics and functional home textiles.

CN120700601APending Publication Date: 2025-09-26FUJIAN EVERSUN JINJIANG CO LTD
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Patent Information

Application Number
CN202511112444.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-08
Publication Date
2025-09-26

AI Technical Summary

Technical Problem

The existing nylon 6 fiber has unstable curling effect, and it is difficult to achieve high-stability self-curling without sacrificing strength. Traditional methods are also costly or affect mechanical properties.

Method used

By regulating the temperature and humidity differences in the inner and outer cooling zones, and utilizing the vertical layout of the flat/F-shaped spinneret and the wind screen, an asymmetric crystal structure is formed, and internal stress induces true curling. Combined with dual-zone differentiated side-blowing cooling and bunched oiling, precise curl control of nylon 6 fiber is achieved.

Benefits of technology

The prepared nylon 6 fiber has a high curl shrinkage rate, excellent elastic recovery rate, and both breaking strength and durability. The curl structure is stable under hot and humid environments, avoiding chemical modification and equipment modification. It is low in cost and suitable for high-end fabrics and functional home textiles.

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Abstract

The invention discloses a chinlon 6 fiber with a curling effect and a preparation method of the chinlon 6 fiber, and belongs to the technical field of textile fibers. Conventional chinlon 6 is used as a raw material, the structure of a spinneret plate and the direction of an air net are adjusted in the spinning process, temperature and humidity differentiated between the inner side and the outer side are generated in combination with precisely controlled cooling parameters, and internal stress is formed through controllable crystallization rate difference to achieve the self-curling effect of the chinlon 6 fiber. According to the method, the situation that a traditional method depends on chemical auxiliaries or complex equipment modification is avoided, the high elastic recovery rate and the curling stability are achieved only through technological parameter optimization, the cost and complexity are remarkably reduced, the curling degree of the prepared chinlon 6 fiber can be accurately regulated and controlled, and compared with conventional chinlon fibers, the curling performance is excellent; the formed fluffy structure effectively improves the air permeability and comfort, the low boiling water shrinkage can ensure that the fabric does not deform after being washed for multiple times, and the fabric has wide application prospects in the field of textiles such as high-end elastic fabric and functional home textiles.
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