Low-melting point nylon fiber and method for producing the same

By adding metal ion compounds and nanoparticles to nylon fibers and combining them with melt blending spinning, ultrafine denier nylon fibers with low melting points and excellent mechanical properties have been successfully prepared. This solves the problems of high melting point and bottleneck in the synthesis of ultrafine denier nylon fibers, and is suitable for low-temperature processing of textiles, clothing and medical products.

CN122105661APending Publication Date: 2026-05-29福建恒捷实业有限公司
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Patent Information

Application Number
CN202610206660.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-12
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Traditional nylon fibers have high melting points, making it difficult to meet the requirements of low-temperature thermal bonding and low-temperature composite processing. Existing modification methods suffer from high costs, complex processes, performance degradation or unevenness, and are difficult to be compatible with ultrafine denier fiber synthesis processes.

Method used

The preparation method of low-melting-point nylon fiber involves adding metal ion compounds (such as calcium chloride) and nanoparticles (such as silicon dioxide) to nylon chips, utilizing their synergistic effect to lower the melting point while maintaining mechanical properties, and then processing them using a melt blending spinning process.

Benefits of technology

It achieves a reduction in fiber melting point to 160-180℃ while maintaining a breaking strength >4cN/dtex and a fineness <0.5dtex. The process is simple and environmentally friendly, and suitable for low-temperature processing of textiles, clothing, and medical supplies.

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Abstract

The application provides a low-melting-point polyamide fiber and a preparation method thereof. The fiber is prepared by melt blending, spinning and forming of polyamide chip, 1-5wt% of a metal ion compound, 0.5-2wt% of nanoparticles and a stabilizer; the metal ion coordinates with the polyamide amide group to destroy the hydrogen bond network, the nanoparticles regulate the crystallization behavior, and the synergistic effect reduces the melting point of the fiber to 160-180 DEG C, while the strength is greater than 4 cN / dtex. The polyamide fiber has stable performance, low melting point and excellent mechanical properties, the process is simple and controllable, the problems of high melting point of traditional polyamide fiber, mechanical property reduction of existing modification method or complex process are solved, and the polyamide fiber is suitable for low-temperature processing scenes such as textiles, clothes and medical supplies, and has industrial application value.
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