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Technological process for flame-retardant fiber production

A production process and flame-retardant fiber technology, which is applied in the field of flame-retardant fiber production process, can solve the problems of reducing the spinnability of flame-retardant silk, unreasonable process, wool and other problems, so as to improve the production operation status and guarantee Uniform cooling, less fuzz and broken ends

Inactive Publication Date: 2018-12-25
ZHEJIANG WELONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the production process of flame-retardant fibers, due to the unreasonable process, the spinnability of flame-retardant yarns is reduced, and problems such as wool and broken ends in the spinning process occur.

Method used

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Embodiment Construction

[0015] The embodiment is described in detail below:

[0016] The production process of flame-retardant fiber is characterized in that the preparation method is as follows:

[0017] A: Slice transportation, pre-crystallization, drying: Pre-crystallization temperature is about 165°C, crystallization time is 25-35min, drying temperature is about 172°C and drying time is extended to 6-8hr to ensure that the moisture content of slices is controlled between 18-22ppm;

[0018] B: The screw extruder is melted, and the spinning assembly is used for spinning: according to the size of the dpf, a filter element with a corresponding μ number is selected to filter the ash impurities in the melt; the spinneret hole diameter for spinning is 0.22mm, and the aspect ratio is 3.2;

[0019] C: Side blowing cooling: using the side blowing process, the wind temperature is 22°C, the rheumatism is 88%, and the wind speed is 0.40m / s;

[0020] D: Spinning oil rack, drafting setting: spinning temperatur...

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PUM

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Abstract

The invention belongs to the technical field of spinning tools and particularly relates to a technological process for flame-retardant fiber production. The technological process for flame-retardant fiber production is characterized in that a preparation method comprises the following steps of slicing, conveying, pre-crystallization and drying, fusion with a screw extruder, fiber jetting with an adopted spinning assembly, cooling through side air blowing, drafting and setting with a spinning-oiling rack and winding and checkout, wherein a side air blowing process adopts the air temperature of22 DEG C, the air humidity of 88% and the air speed of 0.40 m / s. The technological process has the advantages that the spinnability of flame-retardant fiber is improved, broken filaments and broken ends in the spinning process are decreased, and the spinning performance is improved, and yarn unevenness is reduced.

Description

technical field [0001] The invention belongs to the technical field of textile appliances, and in particular relates to a production process of flame-retardant fibers. Background technique [0002] At present, in the production process of flame-retardant fibers, due to the unreasonable process, the spinnability of flame-retardant yarns is reduced, and problems such as wool and broken ends in the spinning process occur. The spinnability of the flame-retardant yarn is directly affected by the injection of the flame-retardant masterbatch at a high proportion and the ash impurities in the melt. Since the dpf of the flame-retardant yarn is only about 1D, the monofilament is delicate and sensitive to changes in external conditions. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned technical problems, provide a method to improve the spinnability of flame-retardant yarn, reduce wool and broken ends in the spinning process, imp...

Claims

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Application Information

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IPC IPC(8): D01D13/00D01F1/07
CPCD01D13/00D01F1/07
Inventor 沈顺华
Owner ZHEJIANG WELONG NEW MATERIAL
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