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New technology of spandex fiber

A new process and spinning technology, which is applied in the field of dry spinning process, can solve the problems of low production efficiency of single machine, high cost per unit output, and small number of spinnerets.

Inactive Publication Date: 2008-10-01
连云港杜钟氨纶有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, 16 heads or 24 heads are used for spinning. The disadvantages are: there is eddy current phenomenon in the tunnel, the number of spinnerets is small, the spinning speed is slow, the production efficiency of a single machine is low, and the unit output cost is high.

Method used

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  • New technology of spandex fiber
  • New technology of spandex fiber

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Embodiment Construction

[0012] Spandex production is mainly divided into processes such as polymerization, spinning winding and post-treatment, and current spinning method has four kinds: dry spinning, wet spinning, melt spinning and reaction spinning, spinning of the present invention The new process is 32 dry spinning. The stock solution after the polymerization reaction is transferred to the storage tank, stored and matured, then filtered, defoamed, and then enters the spinning tank, is fed by nitrogen pressure, pressurized by the gear pump, enters the spiral vane static mixer, and spits out the stock solution through the metering pump in the spinning tank. The filament assembly is filtered, distributed to the spinneret and sprayed out. The pressure in front of the metering pump is increased to 15-20kg / cm2. After the solvent is evaporated and removed in the spinning tunnel, it is solidified into spandex tow, and then false twisted, Oil it, and wind it into a certain weight silk roll on the winding...

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Abstract

This invention relates to a new kind of spandex spinning technology. Send stock solution has undergone polymerization to storage jar for ripening, then through filtration, getting out of bubble, and entering spinning slot, pressing send by nitrogen gas and gear pump pressurize it into static mixer; Through the measuring pump to spit out stock solution and filtering it in spinning module, then allocate to spurt filament plate and spurt out from it; Evaporate out solvent in the spinning path and solidify it to spandex ammonia silk beam, then through false twisting, adding oil and rolling on the rolling machine to pack silk roll. This invention increase static mixer to suit 32 head spinning, reduce adverse effect caused by polymer which make gradient difference of temperature, residence time and viscosity along the radial of pipe; control the actuality temperature out of circulatory mediator in jar, spinning slot, static mixer and partner heat equipment, keep the homogenicity and stability after increasing the spinning air quantity and blast temperature, and increase volatilizing speed but not effect strand form.

Description

technical field [0001] The invention relates to a dry spinning process, in particular to a new spandex spinning process. Background technique [0002] Spandex fiber has high strength, light specific gravity, excellent high elasticity and elastic recovery rate, and its clothing products are soft and full of elasticity. When worn, it is close to the body without restraint, and feels very comfortable. In recent years, it has become an indispensable special feature for the development of high-end elastic textiles. Textile fiber has a wide range of application value and development prospects. The spinning process is the place where the spandex fiber is formed. In the spinning process, the polymer solution evaporates through the solvent to form the spandex fiber. The technological conditions of the forming process determine the performance and quality of the spandex fiber. At present, 16 heads or 24 heads are used for spinning. The disadvantages are: there is eddy current in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/04
Inventor 毛一兵胡爱林汪宝华杨森张斌
Owner 连云港杜钟氨纶有限公司
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