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Production technology of viscose flat monofilament

A flat monofilament and production process technology, applied in the field of viscose flat monofilament production process, can solve the problems of inability to meet market demand, affecting the wearability of fabrics, low fineness of viscose monofilament, etc., to ensure spinnability, Uniform product width and good spinnability

Active Publication Date: 2013-07-24
YIBIN HIEST FIBER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. Conventional production technology will cause the product filaments to be too hard and rough to the touch, resulting in difficulties in dyeing, weaving and other subsequent processes, and seriously affecting the wearability of the fabric
[0008] 2. Viscose monofilament has low fineness and low strength, so it cannot be dyed and weaved in the next process, and cannot meet market demand
The flat yarn obtained by this production method is multifilament tow, and the product has twist, which is not suitable for the production of flat monofilament, and the coagulation bath composition and centrifugal tank method adopted make the product feel bad, especially for high fineness silk, feel hard
Therefore, this preparation method is not particularly suitable for the production of high denier flat monofilaments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A production process for viscose flat monofilaments, using cellulose fiber pulp as raw material, preparing viscose single filaments with a flatness of 10-500:1 through spinning solution preparation-spinning-after treatment, specifically including the following Process steps:

[0039] A spinning solution preparation

[0040] Cellulose fiber pulp is soaked, aged, yellowed, dissolved, defoamed and filtered to obtain spinning solution;

[0041] B spinning

[0042] The spinning solution is sent into the spinning machine by the glue supply pipeline, and is sent quantitatively by the metering pump. The spinning solution passes through the single-hole nozzle and passes through the spinneret hole under pressure to form a fine flow of viscose, which then enters the coagulation bath. After solidification and molding, raw silk strips are formed.

[0043] The nozzle stretching +60%;

[0044] The shape of the entrance channel of the spinneret hole is parabolic, and the shape of t...

Embodiment 2

[0051] Basically the same as embodiment 1, on this basis:

[0052] The nozzles described are stretched +80%.

[0053] The inlet channel of the spinneret hole is a parabola, and the shape of the spinneret hole is "C" type, and the aspect ratio is 100:1.

[0054] The spinning speed of the spinning machine is 80m / min.

[0055] The composition of the coagulation bath is: sulfuric acid 120g / L, sodium sulfate 280g / L, zinc sulfate 25g / L; the temperature is 50°C.

[0056] The cellulose pulp is wood pulp.

[0057] The prepared viscose flat monofilament has a fineness of 50D, a flatness of 10:1, a strength of 80CN, a dry breaking strength of 2.5CN / dtex, a wet breaking strength of 2.0CN / dtex, and a dry breaking elongation of 20%. , the thread width is 60mm, and the whiteness is 80%.

Embodiment 3

[0059] Basically the same as embodiment 1, on this basis:

[0060] The nozzles described are stretched +70%.

[0061] The inlet channel of the spinneret hole is a parabola, and the shape of the spinneret hole is "S" shape, and the aspect ratio is 1500:1.

[0062] The spinning speed of the spinning machine is 50m / min.

[0063] The composition of the coagulation bath is: sulfuric acid 100g / L, sodium sulfate 240g / L, zinc sulfate 20g / L; the temperature is 40°C.

[0064] The cellulose pulp is bamboo pulp.

[0065] The prepared viscose flat monofilament has a fineness of 6000D, a flatness of 500:1, a strength of over 76CN, a dry breaking strength of 2.2CN / dtex, a wet breaking strength of 1.8CN / dtex, and a dry breaking elongation of 18 %, the thread width is 30mm, and the whiteness is 82%.

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Abstract

The invention relates to a production technology of viscose flat monofilament. The production technology takes cellulosic fiber pulp as a raw material and obtains viscose monofilament with the flatness of (10-500):1 through preparation of a spinning solution, spinning and aftertreatment, and specifically comprises the following steps of: (A) preparing the spinning solution from the cellulosic fiber pulp through steeping, ageing, yellowing, dissolving, defoaming and filtering; (B) feeding the spinning solution into a spinning machine and enabling the spinning solution to pass through a spinneret orifice of a single-hole spray head under pressure, and solidifying and molding the formed viscose trickle to form raw silk strips, wherein the spray head is stretched by +60% to +80%, an inlet channel of the spinneret orifice is in a parabola shape, the shape of the spinneret orifice is '-', 'C' and 'S', and the length-width ratio of the spinneret orifice is (100-1,500):1; and (C) performing aftertreatment: performing desulfurization, bleaching, oiling and drying on the raw silk strips to obtain the viscose flat monofilament. According to the production technology provided by the invention, the cross section of the prepared viscose flat monofilament strip is in a flat shape, and the viscose flat monofilament has an effect of natural hemp fiber and can be widely applied to weaving.

Description

technical field [0001] The invention relates to the technical field of viscose in the textile industry, in particular to a production process of viscose flat monofilament. Background technique [0002] Monofilament refers to a single filament produced by a single-hole spinneret in chemical fiber production, and its fineness is in the range of 50D-6000D. Monofilament is widely used in weaving, handmade accessories, home textiles and industrial supplies. The textile quality made of monofilament is thin, transparent and feels good. [0003] Flat yarn is a new type of Vicat fiber with a flat cross-section that is spun by a special process. It combines the excellent properties of ordinary Vicat fiber and hemp fiber. The fabric is smooth, elastic and soft, rich in three-dimensionality, comfortable and pleasant; it has the characteristics of moisture absorption and heat dissipation, and is easier to dye. [0004] With the improvement of people's living standards, higher requirem...

Claims

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Application Information

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IPC IPC(8): D01F2/08D01F11/02D01D5/253
Inventor 邓传东李蓉玲范贤珍陈明付刘键
Owner YIBIN HIEST FIBER
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