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

A manufacturing method and carpet yarn technology, which are applied in hollow filament manufacturing, rayon manufacturing, yarn and other directions, can solve the problem of difficult rapid expansion of PTT carpet yarn, and achieve the effect of simple manufacturing method and good anti-fouling effect.

Active Publication Date: 2012-09-12
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 qu

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, and a spinneret with 30 holes / trilobal triangular ring holes, PTT slices and special oil for PTT are used.

[0038] Process: Pre-dry the PTT slices until the water content is 15ppm~50ppm, transport them into the entrance of the screw extruder through a fully enclosed short-distance pipeline, melt the dried PTT slices through the screw, push the screw through the conduit, and send them into spinning The box body, the screw extrusion temperature is 250 ° C, the extrusion pressure is 76 bar, the melt is metered and transported to the spinneret in the box body by the spinning pump, and the spinneret hole of the spinneret with 30 holes / three-lobe triangular ring hole The extruded melt stream is cooled and solidified into fibers by side blowing in the spinning window. The temperature of the spinning assembly is 260°C, the spinning pressure is 30bar, the side blowing temperature is 16.5°C, a...

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 slices and special oil for PTT are used.

[0043] Process: Pre-dry the PTT slices until the water content is 15ppm-50ppm, transport them into the entrance of the screw extruder through a fully enclosed short-distance pipeline, melt the dried PTT slices through the screw, push the screw through the conduit, and send them into spinning The box body, the screw extrusion temperature is 260 ° C, the extrusion pressure is 80 bar, the melt is metered and transported to the spinneret in the box body by the spinning pump, and the spinneret hole of the spinneret with 30 holes / three-lobe triangular ring holes The extruded melt stream is cooled and solidified into fibers by side blowing in the spinning window. The temperature of the spinning assembly is 260°C, the spinning pressure is 33bar, the side blowing temperature is 15.5°C, ...

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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 in particular relates to a special-shaped hollow PTT bulky carpet yarn and a manufacturing method thereof. 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 respectively, among which the biological method has lower production cost and better product quality. Since 2006, my country's Tsinghua University has successively cooperated with companies such as Hunan Haina Baichuan Bioengineering, Heilongjiang Chenneng Bioengineering, and Tianguan Group. The total amount of biological synthesis routes has formed an industrial production scale of nearly 10,000 tons per year. Regarding PT...

Claims

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Application Information

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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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