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Production process of nylon-6 coarse-denier high-strength yarns

A production process and nylon technology, which is applied in the field of production technology of nylon 6 coarse denier high-strength yarn, can solve problems such as the inability of equipment to meet production needs.

Inactive Publication Date: 2015-06-10
QUANZHOU TIANYU CHEM FIBER WEAVING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Due to the needs of the market, in some fields, customers require the strength of nylon 6 products to reach 6.2CN / dtex, which is much higher than the 3.8CN / dtex of conventional products. At the same time, the requirements for fineness are generally above 200D, and the number of holes is generally 48 holes. Above, to meet the above requirements at the same time, the existing equipment and technology cannot meet the production needs

Method used

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  • Production process of nylon-6 coarse-denier high-strength yarns

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Embodiment Construction

[0026] A production process of nylon 6 coarse-denier high-strength yarn, including slicing→melting→metering→spinning→cooling→oiling→pre-network→drawing and setting→main network→winding.

[0027] Slice, select the nylon 6 slice that viscosity is 2.8 for use, this slice is the nylon 6 slice that Taiwan Ji Sheng nylon slice company produces, and product model is HP3402.

[0028] Melting, using a screw extruder to heat-process the melt into the slice, and transport it to the metering pump in the metering step through the melt pipeline insulated by biphenyl. The temperature of the screw extruder is 270-280 ° C. Biphenyl The holding temperature is 275°C, and the shear rate of the melt pipe is 17-25sec -1 .

[0029] Metering depends on the gap between the two interlocking gears of the metering pump for precise metering, and continuously delivers a certain pressure of the melt to the spinning assembly.

[0030] Spinning, the melt that enters the spinning assembly is filtered and the...

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Abstract

A production process of nylon-6 coarse-denier high-strength yarns includes slicing, melting, metering, spinning, cooling, oiling, pre-interlacing, drafting and setting, main interlacing, and winding. In the slicing step, nylon-6 slices 2.8 to 3.2 in viscosity are selected. Melting is performed at the temperature of 270 DEG C to 280 DEG C. In the spinning step, pore diameter of a spinneret plate is 0.36mm, pore length is 1.08 mm, and initial pressure of a component is 135 bars to 142 bars. In the oiling step, oil resistant to high temperature, anti-static and high in cohesion is adopted. The nylon-6 slices of specific viscosity are used, the temperature of the melting step is adjusted, and a melt pipe, a spinning component, an oiling device, pre-interlacing and drafting and setting are modified, and the nylon-6 coarse-denier high-strength yarns up to 6.2Cn / dtex in breaking strength are produced.

Description

technical field [0001] The invention relates to a production process of nylon 6 coarse denier high-strength yarn. Background technique [0002] Due to the needs of the market, in some fields, customers require the strength of nylon 6 products to reach 6.2CN / dtex, which is much higher than the 3.8CN / dtex of conventional products. At the same time, the requirements for fineness are generally above 200D, and the number of holes is generally 48 holes. Above, to meet the above requirements at the same time, the existing equipment and technology cannot meet the production needs. Contents of the invention [0003] The purpose of the present invention is to provide a production process of nylon 6 coarse denier high-strength yarn with a breaking strength of up to 6.2CN / dtex in view of the deficiencies of the prior art. [0004] The purpose of the present invention is achieved through the following technical solutions: [0005] A production process for nylon 6 coarse-denier high-s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/00D01D5/08D01D5/096D01D5/092D01D5/16D01D11/00
CPCD01D13/00D01D5/08D01D5/092D01D5/096D01D5/16D01D11/00
Inventor 宋建生韦飞
Owner QUANZHOU TIANYU CHEM FIBER WEAVING IND
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