A kind of flat polyester fiber fdy yarn and preparation method thereof

A polyester fiber, flat technology, applied in the field of flat polyester fiber FDY yarn and its preparation, can solve the problems of poor product shape retention, weakening extrusion expansion ratio, reducing export expansion, etc., and achieves good protection. shape effect, reduce extrusion expansion ratio, reduce the effect of outlet expansion
CN106835338BActive Publication Date: 2020-02-11JIANGSU HENGKE ADVANCED MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU HENGKE ADVANCED MATERIALS CO LTD
Publication Date
2020-02-11

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Abstract

The invention relates to a flat polyester fiber FDY (Fully Drawn Yarn) and a preparation method thereof. The spinning melt comprises a saturated fatty acid metal salt and polyester, wherein a mass ratio of the saturated fatty acid metal salt to polyester is (0.0005-0.002):1; the filtered pressure during spinning is 84-126kg / cm<2>; a die-swell ratio of the spinning melt is 1.22-1.34; and the saturated fatty acid metal salt refers to a fatty acid metal salt with the carbon atom number of 12-22, the melting point of 100-180 DEG C and the dynamic viscosity of less than or equal to 1Pa.s. The saturated fatty acid metal salt is added into the spinning melt, and the filtered pressure and extrudate swelling during spinning can be effectively reduced, so that the product has an excellent shape preserving effect; meanwhile, the saturated fatty acid metal salt can serve as a nucleating agent, so that the fiber curing speed is increased, and the fiber shape preserving effect is improved. In addition, the fiber structure regularity is not greatly damaged by the saturated fatty acid metal salt, and excellent performances of the polyester fibers are maintained.
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Description

technical field

[0001] The invention belongs to the field of polyester fibers, and in particular relates to a flat polyester fiber FDY filament and a preparation method thereof. Background technique

[0002] Polyethylene terephthalate fiber (PET fiber or polyester fiber) has a series of high breaking strength and elastic modulus, moderate resilience, excellent heat setting, good heat resistance and light resistance, acid resistance, alkali resistance and corrosion resistance. Excellent performance, and the fabric has the advantages of anti-wrinkle, non-ironing, good crispness, etc., and is widely used in clothing, home textiles and other fields. However, polyethylene terephthalate fibers also have disadvantages such as poor hygroscopicity, non-absorbent fabric, stuffy feeling when worn, and difficult coloring, which greatly restricts the application and development of polyethylene terephthalate fibers. People have been devoting themselves to the research and development of ...

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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