Ultra-fine denier polyurethane filament

A technology of polyurethane and ultra-fine denier, which is applied in the direction of conjugated synthetic polymer artificial filament, filament/thread forming, textile and papermaking, etc. It can solve the problems of large single filament fineness and large viscoelasticity, and achieve good mechanical strength , It is conducive to the improvement of spinning speed and the effect of increasing the number of holes
CN1667167AInactive Publication Date: 2005-09-14DONGHUA UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2005-09-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a superfine denier polyurethane filament and the method to manufacture. The filament is an island type superfine denier polyurethane filament that the low density polyethylene as see const and the polyurethane as the island const. And the weight ratio of polyethylene is from 0.4 to 1.5:1. The filament number after the island separated is from 0.08 to 0.3dtex. And the density of finished silk fiber product is 150-200dtex; breakdown strength of fiber is 1.9-2.1CN / dtex; the elongation at break is 100-150%. The invention is easy to be industrialization manufactured.
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Description

technical field

[0001] The invention relates to a chemical fiber, in particular to manufacturing a superfine denier polyurethane composite filament and a preparation method thereof. Background technique:

[0002] Island-in-the-sea composite fiber is a new technology for manufacturing ultra-fine fibers. It consists of two polymers that are melted separately through a twin-screw composite spinning machine and enter the island-in-sea spinneret. The two melts of the sea and the island pass through their respective channels. The entrances of the spinneret holes meet and are extruded together. In the island-in-the-sea filament, each fiber contains many island microfibers. After the filament is made into a woven or knitted fabric, the sea component is dissolved, and the island component becomes a superfine fiber to form the substrate of the fabric. The use of sea-island method to produce polyester, brocade and other ultra-fine filaments has been produced for a long time, but in th...

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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