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Special-shaped hollow PTT (polytrimethylene terephthalate) bulked yarn and preparation method thereof

A manufacturing method and carpet yarn technology, applied in hollow filament manufacturing, rayon manufacturing, yarn, etc., can solve the problem of PTT carpet yarn difficult to expand rapidly, and achieve the effect of simple manufacturing method and good anti-pollution

Active Publication Date: 2014-09-24
CHANGZHOU LINGDA SPECIAL FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In my country's national conditions where economical benefits are the first principle of consumption, and under the current situation that the price of PTT cannot be lowered, despite the aforementioned quality and environmental advantages of PTT bulked carpet yarn, if the bottle diameter caused by the specific gravity is not resolved, PTT It is difficult for carpet yarn to expand rapidly in the short term

Method used

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  • Special-shaped hollow PTT (polytrimethylene terephthalate) bulked yarn and preparation method thereof
  • Special-shaped hollow PTT (polytrimethylene terephthalate) bulked yarn and preparation method thereof
  • Special-shaped hollow PTT (polytrimethylene terephthalate) bulked yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A single-screw BCF spinning unit is used for spinning at a spinning speed of 2300m / min, using a spinneret with 30 holes / trilobal triangular ring holes, PTT chips and PTT special oil.

[0038] Process: Pre-dry the PTT chips to a moisture content of 15ppm~50ppm, and transport them to the inlet of the screw extruder through a fully enclosed short-path pipeline. The dried PTT chips are melted by the screw and sent to the spinning by the screw through the duct Box body, the screw extrusion temperature is 250℃, the extrusion pressure is 76bar, the melt is metered and transported to the spinneret by the spinning pump in the box body, from the spinneret of 30 holes / trilobal triangular ring hole spinneret The extruded melt stream is cooled and solidified into fibers by side blowing in the spinning window. The spinning component temperature is 260℃, the spinning pressure is 30bar, the side blowing temperature is 16.5℃, and the wind speed is 0.7m / s. After oiling, it is drawn and stre...

Embodiment 2

[0042] A single-screw BCF spinning unit is used for spinning at a spinning speed of 2000m / min, and a spinneret with 30 holes / trilobal triangular ring holes, PTT chips and PTT special oil are used.

[0043] Process: Pre-dry the PTT chips to a moisture content of 15ppm~50ppm, and transport them to the inlet of the screw extruder through a fully enclosed short-path pipeline. The dried PTT chips are melted by the screw and sent to the spinning by the screw through the duct Box body, the screw extrusion temperature is 260℃, the extrusion pressure is 80bar, the melt is metered and transported to the spinneret by the spinning pump in the box body, from the spinneret of 30 holes / trilobal triangular ring hole spinneret The extruded melt stream is cooled and solidified into fibers by side blowing in the spinning window. The spinning component temperature is 260℃, the spinning pressure is 33bar, the side blowing temperature is 15.5℃, and the wind speed is 0.8m / s. After oiling, it is drawn a...

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Abstract

The invention belongs to the technical field of carpet yarn processing, and in particular relates to special-shaped hollow PTT (polytrimethylene terephthalate) bulked yarn and a preparation method thereof, wherein the special-shaped hollow PTT bulked yarn comprises a carpet yarn body which is special-shaped hollow bulked yarn formed by PPT fiber after bulked deformation and processing; the linear density of the carpet yarn body is 1000dtex-2000dtex; and the single fiber of the special-shaped hollow bulked yarn has the cross sections of a three-leaf triangular outer ring and a triangular inner hole. The preparation method is that a spinneret plate with special-shaped spinneret holes is adopted, and the preparation is completed on a BCF (bulked continuous filament) spinning machine by a one-step method. The fiber hollow degree is 13%-18%, the carpet yarn with the same effect is prepared, the cost is lowered by more than 13%, and the special-shaped hollow PTT bulked yarn has favorable beneficial effects. By adopting the method, the preparation is completed by one step without increasing the spinning expense by utilizing the original spinning machine under the specific spinning condition, and the preparation method is simple, economic and practical.

Description

Technical field [0001] The invention belongs to the technical field of carpet yarn processing, and particularly relates to a special-shaped hollow PTT bulked carpet yarn and a manufacturing method. Background technique [0002] Polytrimethylene terephthalate (PTT) is a polymer formed by esterification and polycondensation of terephthalic acid and 1,3-propanediol. It is a new type of polyester fiber raw material. Among them, there are two production methods for 1,3-propanediol: chemical method and biological method, represented by Shell and DuPont of the United States respectively. Among them, the biological method has lower production cost and better product quality. Since 2006, Tsinghua University in my country has successively cooperated with companies such as Hunan Haina Biotech, Heilongjiang Chenneng Bioengineering, Tianguan Group, etc. The total amount of biosynthesis routes has formed an industrial production scale of nearly 10,000 tons per year. Regarding PTT resin, Zhang...

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/24D01D5/24D01D5/253
Inventor 蒋国忠张立军陆惠林蒋文蒋枫薛小平蒋俊贤
Owner CHANGZHOU LINGDA SPECIAL FIBER
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