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Process for producing modified PET/PTT elastic fiber

A technology of elastic fiber and production process, which is applied in the field of production process of modified elastic fiber, can solve the problems of inconspicuous effect, high cost, and influence on dyeing rate, and achieve advanced and reasonable production process, lower production cost and high dyeing rate Effect

Active Publication Date: 2014-08-20
辽宁际华新材料制造有限公司
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Problems solved by technology

At present, some foreign technologies are used for academic research and small-batch production in China, and some are limited to laboratory research, which is difficult to produce on an industrial scale, and the quality of the produced products is difficult to guarantee. Many, affect the dyeing rate, the effect is not obvious on the elastic treatment, the elastic recovery is low, and the cost is high, the cost is high

Method used

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  • Process for producing modified PET/PTT elastic fiber

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Embodiment Construction

[0015] Referring to the accompanying drawings, the composite spinning equipment, process route and technical conditions are used for production, and the fiber forms a peanut-shaped structure.

[0016] The composite spinning equipment mainly includes a composite spinning box, which includes main and auxiliary boxes, metering pumps, spinning components, screw extruders, melt pipelines, winding machines, drafting machines, etc. .

[0017] Raw materials are processed in the early stage: first, the PTT and PET slices are thickened.

[0018] The material distribution ratio of each layer of PET / PTT elastic fiber: the outer layer uses PTT, accounting for about 30% of the total material weight, the inner layer uses PET accounting for 60% of the total material weight and PTT accounting for 10% of the total material weight, the total ratio: PET:PTT is 60:40.

[0019] The dried PET slices are extruded and melted into the PET screw extruder 1 to become a spinnable melt. They are heated r...

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Abstract

The invention discloses a process for producing a modified polyethylene terephthalate / polytrimethylene terephthalate (PET / PTT) elastic fiber, relates to a process for producing a modified elastic fiber, and mainly aims to solve the problems of spinning instability and the like of a product produced by the conventional process. The method comprises the following steps of: tackifying PTT slices and PET slices in a ratio of 40:60; adding the PET slices into a screw extruder for extruding and melting, and heating in five areas; adding the PTT slices into the screw extruder for extruding and melting, and heating in three areas; and mixing a PET melt in a PET melt distributing pipe and PTT fed by a PTTa melt distributing pipe in a weight ratio of 90:10, producing by the conventional process to obtain a partially oriented yarn (POY) bobbin yarn semi-finished product, and showing elasticity by using a draw winder to obtain a draw textured yarn (DTY) finished product. The process has the advantage that: the modified PET / PTT elastic fiber which has spinning stability and high elastic recovery property can be produced.

Description

Technical field: [0001] The invention relates to a production process of differentiated fibers in the field of chemical fibers, in particular to a production process of modified elastic fibers. Background technique: [0002] With the improvement of people's living standards, the requirements for clothing are getting higher and higher. PTT fiber integrates the excellent wearability of various fibers, has the characteristics of excellent elasticity, soft hand feeling, and easy dyeing. It is a new development in the world today. One of the polymer materials. Due to its high price, most of the consumer groups are kept out of the door. At present, some foreign technologies are used for academic research and small-batch production in China, and some are limited to laboratory research, which is difficult to produce on an industrial scale, and the quality of the produced products is difficult to guarantee. Many, affect the dyeing rate, the effect on the elastic treatment is not ob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/088D01D5/34D01D10/00D02G1/00D01F8/14
Inventor 周峰周萍
Owner 辽宁际华新材料制造有限公司
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