Regeneration process for producing spinnable fibers by utilizing denim fabric

A denim and fabric technology, applied in biochemical fiber treatment, fiber treatment, recycling technology, etc., can solve the problems of insufficient fiber length, uneven opening, and many short piles, so as to improve quality, improve fiberization effect, increase The effect of grooming times

Pending Publication Date: 2020-04-10
澧县新伟纺织有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with ordinary opening treatment, the problems that come out of the regenerated cotton are:

Method used

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  • Regeneration process for producing spinnable fibers by utilizing denim fabric

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Example 1

[0040] Desizing: Add denim rags to the container, and then add amylase to the container. The weight of the amylase accounts for 0.5% of the denim rags. Then add 1% of the denim rags to the container. The penetrant, which accounts for 0.2% of the weight of the broken denim fabric, is heated to 50°C, and the temperature is maintained for 30 minutes before cleaning.

[0041] Peeling: Peel the denim scraps washed after desizing. First add 80% sodium chlorite to the denim rags of the container, and its weight accounts for 4% of the denim rags, and then add 0.2% of the denim rags to make the solution The pH value reaches 3.5 and the bath ratio reaches 1:5. The container is sealed and soaked for 3 hours at room temperature.

[0042] Bleaching: bleach after desizing and stripping. Add a 10% concentration of sodium hypochlorite solution to the water container, the weight of which accounts for 5% of the weight of the waste yarn, so that the pH value of the solution reache...

Example Embodiment

[0047] Example 2

[0048] The difference from embodiment 1 is only in the selection of process parameters, and the others have not changed. The details are as follows:

[0049] Desizing: Add denim rags to the container, and then add amylase to the container. The weight of amylase accounts for 0.75% of the denim rags. Then add 1.5% of the denim rags to the container. The penetrant, which accounts for 0.35% of the weight of the broken denim fabric, is heated to 52°C, and this temperature is maintained for 45 minutes before cleaning.

[0050] Peeling: Peel off the denim fabric washed after desizing. First add 80% sodium chlorite to the denim rags of the container, and its weight accounts for 5% of the denim rags, and then add 0.4% of the penetrating agent to the denim rags to make the solution The pH value reaches 3.8 and the bath ratio reaches 1:7.5. The container is sealed and soaked for 4 hours at room temperature.

[0051] Bleaching: bleach after desizing and stripping. Add 10% so...

Example Embodiment

[0056] Example 3

[0057] The difference from Embodiments 1 and 2 is only in the selection of process parameters, and the others are not changed. The details are as follows:

[0058] Desizing: Add denim rags to the container, and then add amylase to the container. The weight of the amylase accounts for 1% of the denim rags. Then add 1.5% of the denim rags to the container. The penetrant, which accounts for 0.5% of the weight of the denim rags, is heated to 55° C., and the temperature is maintained for 60 minutes before cleaning.

[0059] Peeling: Peel off the denim fabric washed after desizing. First, add 80% sodium chlorite to the denim rags of the container, and its weight accounts for 6% of the denim rags, and then add 0.5% of the penetrating agent to the denim rags to make the solution The pH value reaches 4.2 and the bath ratio reaches 1:10. The container is sealed and soaked for 5 hours at room temperature.

[0060] Bleaching: bleach after desizing and stripping. Add a 10% co...

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Abstract

The invention discloses a regeneration process for producing spinnable fibers by utilizing denim fabric. The regeneration process comprises the following steps of conducting desizing; conducting stripping; conducting bleaching; conducting dechlorinating; conducting opening: primarily opening the denim fabric subjected to the dechlorinating step into a cloth block by using a brad card beater nail plate opener, and further opening the denim fabric subjected to the primary opening into cotton by using a sawtooth beater opener; conducting scutching: scutching the cotton subjected to the opening step into regenerated cotton by using a sawtooth scutching machine, and repeatedly carrying out the scutching for 3-4 times; and conducting carding: carding the cotton subjected to the scutching for 1-2times, and processing the cotton into the spinnable fibers. Due to the implementation of the technical scheme, compared with the prior art, the regeneration process has the advantages that the fiberscan be further and uniformly opened into the cotton, the yield is greatly improved, the scutching process is increased, and the denim fabric becomes regenerated cotton with spinnability; and the carding times are increased, the quality of the fibers is greatly improved, and the fibrosis effect is further improved.

Description

Technical field [0001] The invention belongs to the technical field of waste textile recycling, and specifically relates to a regeneration process for producing spunable fibers by using denim rags. Background technique [0002] In the production process of denim garments, for example, warp yarn sizing, denim weaving, denim finishing, garment making, washing and other processes will produce a large amount of leftovers and defective products. These leftovers and inferior waste products belong to the textile industry solid waste, which we collectively refer to as denim rags. [0003] If these denim scraps are treated as waste, it will not only cause waste, but also cause environmental pollution. The manufacturers that produce these denim wastes usually do not have the ability to recycle and can only deal with it cheaply. Some people simply recycle it after purchase. In the prior art, the treatment of denim rags includes peeling, bleaching, dechlorination, fiberization and other step...

Claims

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Application Information

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IPC IPC(8): D01G11/04D06B3/10D06L4/23D06L4/24D06M11/56D06M11/76D06M16/00
CPCD01G11/04D06B3/10D06L4/23D06L4/24D06M11/56D06M11/76D06M16/003Y02W30/66
Inventor 熊荣洪熊文杰
Owner 澧县新伟纺织有限责任公司
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