High-durability three-dimensional crimped composite polyester filling cotton, preparation method and application thereof

By using a hot-melt bonding network structure of parallel bicomponent polyester fibers, the problems of poor loft retention and easy clumping of polyester filling cotton are solved, resulting in filling cotton with high durability and soft feel, suitable for high-end bedding and outdoor clothing.

CN122105740APending Publication Date: 2026-05-29JIANGSU ACOME OUTDOOR PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU ACOME OUTDOOR PROD CO LTD
Filing Date
2026-04-07
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing polyester filling cotton has problems such as poor loft retention and easy caking in high-end applications. Traditional spray adhesive bonding results in a hard feel, and the overall heat melting can easily damage the fibers. Furthermore, the fiber composition design fails to take into account rigid support, lightweight loft and rapid moisture wicking.

Method used

It uses parallel bicomponent polyester fibers, with the main fiber as the supporting crimp phase and the hot melt bonding fiber as the bonding phase. The hot melt bonding forms a point bonding network. The difference in thermal shrinkage rate between the main fiber and the hot melt bonding fiber forms a three-dimensional spiral permanent crimp structure. Combined with the 5%~15% proportion of hot melt bonding fiber, the stability and elasticity of the fiber assembly are ensured.

Benefits of technology

It achieves high durability and fluffiness retention of the filling cotton, avoids fiber slippage and collapse, maintains a good soft feel and lightweight properties, and significantly improves service life.

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Abstract

The application discloses high-durability three-dimensional crimped composite polyester filling cotton, a preparation method and application thereof, the filling cotton is a fiber assembly with point bonding network formed by uniformly mixing main fibers and hot melt bonding fibers and then hot melt bonding, the main fibers are a supporting crimping phase, the hot melt bonding fibers are a bonding phase, and the mass percentage of the hot melt bonding fibers is 5-15% of the total mass of the main fibers and the hot melt bonding fibers. The application provides the main fibers as the supporting crimping phase to provide the basis of the fluffy elasticity and the rigid support of the filling cotton, the hot melt bonding fibers as the special bonding phase, and the network structure is formed only by the point bonding of the fiber intersection points, so that the irreversible slippage and collapse of the main fibers under stress are avoided, the stability of the overall structure of the filling cotton is ensured, the crimping elasticity of the main fibers is not damaged, and the filling cotton maintains good fluffy and resilient basic characteristics.
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