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Production process of composite Dacron filament with special shape and different shrinkage

A composite filament and differential shrinkage technology, which is applied in filament/thread forming, single-component polyester rayon, melt spinning, etc., can solve the problems of complicated spinning process, increase manufacturing cost, etc., and achieve a simple manufacturing process. , high value-added effect

Inactive Publication Date: 2003-03-19
SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Usually, different multiples of drafting are carried out on the drafting equipment on the drafting equipment, so that the whole spinning process is more complicated, and the use of two polyester raw materials requires two sets of yarns for each The spinning position provides a polyester melt system, which undoubtedly increases the manufacturing cost of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～14

[0012] In Table 2, the composition of the total fineness: special-shaped wire specification + round wire specification;

[0013] The breaking strength is the average breaking strength of special-shaped and different-shrinkage mixed fiber filaments, and the test method is in accordance with "GB / T 14344-93 Synthetic Filament Filament and Textured Filament Breaking Strength and Breaking Elongation Test Method";

[0014] Hot water shrinkage difference is the difference in boiling water shrinkage between the high shrinkage part and the low shrinkage part of the special-shaped and different shrinkage mixed fiber yarn. The boiling water shrinkage test method is in accordance with "GB 6505-86 Synthetic Filament Filament and Textured Yarn Boiling Water Shrinkage Test Method".

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PUM

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Abstract

The heat pipe spinning technological process is used in producing composite Dacron filament with special shape and different shrinkage. Polyester melt is jetted via a jetting board assembly with triangular, trilobal or crossed jetting holes and a jetting board assembly with circular jetting holes to produce two kinds of raw filament and the two kinds of raw filament are produced into the composite Dacron filament product with special shape and different shrinkage through drafting in separate heat pipes, twisting, networking and winding. The specially shaped filament has a monofilament titer smaller than that of the circular filament and heteromorphism of y=20-55%, the heat pipe has temperature controlled in 110-160 deg.c and length of 1000-2000 mm, and the spinning winding speed is 3500-5300 m / min.

Description

technical field [0001] The invention relates to a method for manufacturing polyester filaments, in particular to a method for manufacturing polyester composite filaments with different shapes and different shrinkages. Background technique [0002] Special-shaped and different-shrinkage polyester composite filament is a kind of composite polyester filament that contains two kinds of polyester filaments with special-shaped cross-section and circular cross-section, and the two have different hot water shrinkage rates. Usually, the special-shaped yarn has low shrinkage, and the round yarn has high shrinkage. When this kind of polyester composite filament is heat-treated in the subsequent dyeing and finishing process, because the round yarn shrinks more than the special-shaped yarn, the special-shaped yarn produces subtle and natural curls and floats on the surface of the tow, and the cross-section of the tow presents multi-layer fluffy structure, resulting in moderate disorder. ...

Claims

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Application Information

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IPC IPC(8): D01D5/08D01F6/62D02G1/18
Inventor 徐晓辰陈宏军黄斌斌顾晓红严异麟
Owner SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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