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Linen bleaching low acid and low alkali technology

A flax and low-acid technology, applied in textiles and papermaking, fiber treatment, liquid/gas/steam yarn/filament treatment, etc., can solve the problems of flax particle increase, fiber damage, strength decline, etc., to reduce the degree of damage, Effects of improving environmental protection and reducing the difficulty of pollution control

Inactive Publication Date: 2018-10-12
黑龙江金达麻业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the patent has little damage to the fiber, fully removes impurities, and improves the softness of the yarn, the reaction is carried out under relatively high acid and alkali conditions, which will damage the fiber to a certain extent, resulting in a lot of short fibers and resulting in a decrease in strength and numbness. Particles increase, so it still has the above defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be described in further detail below through examples, and the following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0024] Example.

[0025] In this embodiment, taking L36Nm as an example, the low-acid and low-alkali process of flax bleaching is applied to the specific process of bleaching flax yarn as follows.

[0026] (1) Pickling: bath ratio 1:7, using 98% sulfuric acid with a concentration of 1.5g / L and osmotic refining agent LUN (Huntsman) with a concentration of 1.0g / L, treated at 30°C for 20 minute.

[0027] (2) Sub-bleaching: use 98% sulfuric acid with a concentration of 0.5g / L, osmotic refining agent LUN (Huntsman) with a concentration of 0.5g / L, and 31% chlorous acid with a concentration of 9.0g / L Sodium and sodium nitrate with a concentration of 1.5g / L were used, raised from 30°C to 65°C at 1°C / min, and treated at 65°C for 30 minutes; pH=3.5.

[0028] (...

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PUM

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Abstract

The invention relates to a linen bleaching low acid and low alkali technology, and belongs to the technical field of linen processing. The technology comprises the steps that firstly linen roving is subjected to acid pickling, then roving is subjected to low acid high temperature chlorite bleaching, then the roving is subjected to low temperature low alkali oxygen bleaching, and finally the rovingis washed to be clean. The invention adopts the low acid and low alkali bleaching technology, the damage of acid, alkali and hydrogen peroxide to fiber is reduced, the whole technology adopts the lowacid and low alkali technology, the pollution control difficult can be reduced, and the environmental protection can be improved.

Description

technical field [0001] The invention relates to a low-acid and low-alkali bleaching process for flax, which can effectively improve the quality of flax yarn, especially the strength is significantly improved. It is a low-acid, high-temperature sub-bleaching process for flax roving, and then low-temperature, low-alkali oxygen bleaching. The process is mainly used in the production of flax bleached yarn process, and belongs to the technical field of flax processing. Background technique [0002] Due to the characteristics of flax: many impurities and low splitting, high hardness and low elongation of the yarn; in order to remove impurities, a strong suboxygen bleaching process is generally used to improve fiber splitting and spinnability. [0003] Because the conventional suboxygen bleaching process reacts under relatively high acid and alkali conditions, it will damage the fibers to a certain extent, resulting in a lot of short fibers, resulting in a decrease in strength and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06L4/12D06L4/13D06L4/26D06M11/56D06B3/04D06M101/06
CPCD06B3/04D06L4/12D06L4/13D06L4/26D06M11/56D06M2101/06
Inventor 姜伟庄寒良
Owner 黑龙江金达麻业有限公司
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