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Manufacturing method of spandex heavy denier yarn

A technology of coarse denier and spandex, which is applied in the manufacturing field of spandex coarse denier yarn, which can solve the problems of poor resilience, low added value of products, false twist, etc., and achieve the effect of excellent resilience

Active Publication Date: 2010-06-30
YANTAI TAYHO ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 280D and above 280D spandex varieties are called spandex coarse denier yarns. Spandex coarse denier yarns have high requirements for production technology. The current preparation process of spandex coarse denier yarns has problems such as false twisting and winding difficulties, and the added value of the products is low. Poor resilience

Method used

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  • Manufacturing method of spandex heavy denier yarn
  • Manufacturing method of spandex heavy denier yarn
  • Manufacturing method of spandex heavy denier yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 400kg of polytetramethylene ether glycol (PTG) and 100kg of diphenylmethane-4.4'diisocyanate (MDI) raw materials into the reactor respectively, mix at 47°C, and after 1 hour, make The temperature reached 65°C and was maintained at reaction temperature for 2 hours. At this point the prepolymerization reaction is substantially complete. Then the reactant enters the cooling zone where the cooling water passes through the jacket, and is cooled to 36° C. for 3.5 hours. After cooling, a prepolymer is obtained, and dimethylacetamide is added to dissolve the prepolymer. The prepolymer solution is delivered to the storage tank, where the prepolymer solution stays for 8 hours.

[0023] Secondly, the prepolymer solution and the 5% mixed amine solution containing 90% ethylenediamine, 8% propylenediamine, and 2% diethylamine are continuously added at a rate of 500Kg / h and 200Kg / h respectively. The reaction was carried out in a dynamic mixer with a rotating speed of 300 rpm, th...

Embodiment 2

[0026] First, add 400kg of polytetramethylene ether glycol (PTG) and 100kg of diphenylmethane-4.4'-diisocyanate (MDI) raw materials into the reactor respectively, and mix them at 47°C. After 1 hour, The temperature was brought to 65°C and maintained at reaction temperature for 2.5 hours. At this point the prepolymerization reaction is substantially complete. Then the reactant enters the cooling zone where cooling water passes through the jacket, and is cooled to 38° C. for 3 hours. After cooling, a prepolymer is obtained, and dimethylacetamide is added to dissolve the prepolymer. The prepolymer solution is delivered to the storage tank, where the prepolymer solution stays for 8 hours.

[0027] Secondly, the prepolymer solution and the 5% mixed amine solution containing 90% ethylenediamine, 8% propylenediamine, and 2% diethylamine are continuously added at a rate of 500Kg / h and 200Kg / h respectively. The reaction was carried out in a dynamic mixer with a rotational speed of 50...

Embodiment 3

[0030] First, 400kg of polytetramethylene ether glycol (PTG) and 100kg of diphenylmethane-4.4'diisocyanate (MDI) raw materials were added to the reactor respectively, and mixed at 47°C. After 1 hour, The temperature was brought to 65°C and maintained at reaction temperature for 3 hours. At this point the prepolymerization reaction is substantially complete. Then the reactant enters the cooling zone through the cooling water in the jacket, and is cooled to 40° C. for 2.5 hours. After cooling, the prepolymer is obtained, and dimethylacetamide is added to dissolve the prepolymer. The prepolymer solution is delivered to the storage tank, where the prepolymer solution stays for 8 hours.

[0031] Secondly, the prepolymer solution and the 5% solution containing 90% ethylenediamine, 8% propylenediamine, and 2% diethylamine are continuously added at a speed of 500Kg / h and 200Kg / h respectively, and the rotation speed is 700rpm The reaction was carried out in a dynamic mixer, the react...

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Abstract

The invention relates to a manufacturing method of spandex heavy denier yarn, comprising the following steps of: (1) prepolymerization; (2) polymerization and (3) spinning: false twisting spandexes through a high-speed mechanical false twister, guiding the spandexes by using three spandex guiding rollers, applying oil by using an oil applying roller, and then winding the spandexes into yarn rolls on a winder through adjusting a winding angle and a winding parameter, wherein the diameters of the spandex guiding rollers and the oil applying roller are 25%-35% larger than the conventional diameters, the hole diameters of plate holes of a spinning plate are 80%-120% greater than the conventional hole diameters, and the number of the plate holes of the spinning plate is 100%-150% more than the conventional number. The manufacturing method has the advantages of solving the problems of difficult false twisting and winding of the heavy denier yarn and being suitable for the production of the heavy denier yarn, and the product has favorable rebound resilience.

Description

technical field [0001] The invention relates to a method for manufacturing spandex coarse denier yarn, and belongs to the technical field of spandex yarn production. Background technique [0002] Spandex is a highly elastic elastomer fiber, and it is a synthetic fiber in which the linear macromolecular substance of the polyurethane chain segment accounts for more than 85% of the chemical structure. Spandex has high elongation and elasticity. Only a small amount of spandex can be added to many traditional textiles to greatly improve the grade of the fabric, showing a soft, comfortable, beautiful and elegant style, and feeling very comfortable. In recent years, it has become an indispensable special textile fiber for the development of high-grade elastic textiles, and has a wide range of application value and development prospects. [0003] Spandex production is mainly divided into processes such as polymerization, spinning and winding, and post-processing. There are currentl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/70C08G18/66C08G18/10D01D5/06
Inventor 林鹏凌王超高殿飞牟元生宋万全冷向阳
Owner YANTAI TAYHO ADVANCED MATERIALS CO LTD
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