Crimped multicomponent fibers and methods of making same

A technology of multi-component fibers and manufacturing methods, applied in fiber processing, melt spinning, non-woven fabrics, etc., can solve the problems of increasing basic investment production costs, bulkiness, basis weight and overall uniformity fluctuations
CN1331766AInactive Publication Date: 2002-01-16FIBERTEX PERSONAL CARE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FIBERTEX PERSONAL CARE
Publication Date
2002-01-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides continuously crimped propylene polymer nonwoven fabrics as well as processes for forming crimped multicomponent propylene polymer fibers by melt-attenuating extruded multicomponent fibers with heated or unheated air wherein the fibers spontaneously crimp without the need for additional heating and / or stretching steps.
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Description

[0001] This invention relates generally to crimped multicomponent nonwoven fabrics and methods of making them. Background of the Invention

[0002] Nonwoven webs composed of continuous thermoplastic polymer fibers produced by melt spinning of thermoplastic polymers are known in the art. As examples, meltspun and spunbond webs are described in US Patent 4,692,618 to Dorschner et al; US Patent 4,340,563 to Appel et al; and US Patent 3,802,817 to Matsuki et al. In addition, multicomponent spunbond fibers have also been developed before. The term "multicomponent" refers to a fiber that is spun together from at least 2 polymer streams to form a fiber(s). Multicomponent fibers comprise fibers (each) of two or more components arranged in substantially fixed, mutually distinct zones along the cross-section of the fiber, and as such continuously along the entire length of the fiber extend. Multicomponent fibers and methods of making them are known in the art and are generally descri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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