Rotary cup spinning process of polypropylene roving

A rotor spinning, medium-length technology, applied to spinning machines, open-end spinning machines, continuous winding spinning machines, etc., can solve the problems of inability to produce polypropylene coarse-count yarn, etc., to achieve full hand feeling, smooth filter The effect of high precision and large dirt holding capacity

Active Publication Date: 2006-06-28
YANGZHOU YONGHUI TEXTILE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coarse-count polypropylene yarn cannot be produced by ordinary spinning process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Routing:

[0016] High-quality polypropylene particles → spinning → staple fiber → carding B272 → sliver making B302 → needle comb B412 → needle card B423 → needle card B432 → needle card B442 → rotor spinning.

[0017] Process design (short fiber process):

[0018] 1. Raw material selection:

[0019] High-quality polypropylene particle fiber specification: 4.5dtex~6.5dtex, length: 51mm~76mm, strength: ≥4.0CN / dtex, coefficient of variation of strength: ±10.5%, elongation at break: ≤70%, super long fiber: ≤20mg / 100g, defect: ≤25mg / 100g, number of crimps: 5.6 / cm, specific resistance: 4.2×10 7 Ω / cm, surfactant content: 0.6±0.02% (surfactant ingredients: antistatic agent 50%, diffusing agent 15%, silicone oil 30%, other additives 5%).

[0020] 2. Workshop temperature and humidity control:

[0021] Temperature: 25-28°C, relative humidity 55%-65%.

[0022] 3. Pre-spinning (combing B272):

[0023] Raw sliver weight 25g / m Weight unevenness: ≤4.5% Evenness unevenness: 20-...

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Abstract

The present invention relates to rotary cup spinning process of polypropylene roving with short polypropylene fiber of fineness 4.5-6.5 dtex, length 51-76 mm, and surfactant of 0.6 %. The technological process includes carding, slivering, four times of needle combing and rotary cup spinning. The present invention adopts middle and long fiber with less depilation, good teasing and powerful adhesion, and wool spinning and semi-combing apparatus in fore spinning with favorable spinnabliltiy of middle and long fiber and no damage to the physical performance of fiber. The present invention produces middle and long polypropylene roving of 58.8-1100 tex, and the polypropylene roving is non-toxic, smell-less, not water absorbent, acid, alkali and organic solvent resistant, plumpy in hand feeling and fluffy, and may be used widely.

Description

technical field [0001] The invention relates to a polypropylene spinning process, especially a production process of 58.8tex-1100tex coarse count yarn. Background technique [0002] The moisture regain of polypropylene fiber is 0%, the static electricity is large, and the spinnability is poor, which makes the production technology difficult. However, with the needs of the market, such as the yarn used on the filter material, it is required to have a large volume, good bulkiness, no hair removal, and the solution is required to be filtered out of the yarn cavity during filtration without clogging, and foreign customers require Filtration solution can not produce foam, and the general polypropylene fiber with antistatic oil agent can not achieve such an effect. The yarn used in the weaving of carpet backing requires good napping, stable width and strong adhesion. Coarse-count polypropylene yarn cannot be produced by ordinary spinning process. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/02D01H4/10D01H4/00
Inventor 唐春美
Owner YANGZHOU YONGHUI TEXTILE TECH
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