PTT/PET composite elastic short fiber for spinning and preparation method thereof

A short fiber and elastic technology, applied in the field of spinnable PTT/PET composite elastic staple fiber and its preparation, can solve the problems of poor control of elasticity, prone to doffing, lack of elasticity, etc. The effect of doffing and improving production efficiency
CN112144128AInactive Publication Date: 2020-12-29SHANGHAI HAIKAI BIO MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI HAIKAI BIO MATERIAL CO LTD
Publication Date
2020-12-29
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a PTT / PET composite elastic short fiber for spinning and a preparation method thereof. The PTT / PET composite elastic short fiber for spinning is formed by composite spinning ofthe following raw materials including, by mass, 30%-95% of PET slices and 5%-70% of PTT slices, wherein the raw material intrinsic viscosity of the PET slices is 0.42-0.83 d L / g, and the raw materialintrinsic viscosity of the PTT slices is 0.67-1.10 d L / g. According to the PTT / PET composite elastic short fiber, by reducing the PTT component content and reasonably selecting the viscosity ratio ofthe two components, the draft multiple of the PET / PTT composite fiber is increased, generation of the moment difference of the two components of the fiber is guaranteed, the improvement of the mechanical property and the curling property of the fiber is promoted, and the problems of doffing and the like of the PET / PTT composite fiber during spinning are solved.
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Description

technical field

[0001] The invention relates to the technical field of textile materials, in particular to a PTT / PET composite elastic short fiber for spinning and a preparation method thereof. Background technique

[0002] At present, elastic staple fibers on the market are generally produced by a production method in which single-component PET three-dimensional crimped hollow fibers are crimped by a mechanical crimping machine and then shaped by a relaxation heat setting machine.

[0003] The production method of three-dimensional hollow fiber elastic formation is mainly processed by a crimping machine. It has been proved by experiments that the elastic fiber produced by the hollow fiber production method has good spinnability, low density and good looseness. However, due to the conventional three-dimensional hollow fiber The fiber is a single-component fiber, and its bulkiness and feel are very different from that of wool, and its elasticity is small or even non-elastic. ...

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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