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Mechanical rolling-exploding-carding for edulcorating combined degumming method for hemp

A technology of mechanical rolling and degumming method, applied in the field of textile fiber processing, can solve the problems of fiber damage, poor quality of refined hemp, polluted water area, etc., and achieve the effect of no damage to fibers and green and environmental protection of fibers

Active Publication Date: 2013-12-11
无锡恒隆纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional rain degumming method and warm water leaching method are greatly affected by the environment, the degumming time is long, the efficiency is low, the fiber quality is also poor, and the water area is polluted; the chemical degumming method is currently the most commonly used method, but it needs to use a lot of chemical reagents. The process is long, the cost is high, the consumption is high, the environmental pollution is serious, and it is easy to cause damage to the fiber. Now it is greatly affected by the environmental protection policy, and it is difficult to promote and use it on a large scale; although the biological degumming method is simple in process and low in energy consumption, It has less environmental pollution, especially the enzymatic bacteria that can effectively degrade lignin has not yet been found, the degumming is not complete, and the quality of dry hemp is poor, and it must be supplemented by chemical degumming before it can be used for spinning; ultrasonic, steaming, microwave irradiation, etc. The technology is still in the research and exploration stage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of mechanical rolling-flash explosion-combing impurity removal combined hemp degumming method, the steps are as follows:

[0018] (1) Pretreatment: Untie the tied hemp and spread it flat, feed it into the hemp mechanical rolling machine at a speed of 0.5m / min, and get the hemp bundle after passing through the output roller top roller; The bunches are cut into 15cm-long sections of hemp; the section of hemp is immersed in water for pre-wet treatment according to the bath ratio of 1:10, and 1g / L penetrating agent is added, soaked for 60 minutes;

[0019] (2) Flash explosion: take out the segmented hemp obtained after the pretreatment in step (1), cool it for 1 hour, keep it in a 1.0MPa pressure vessel for 60 seconds, and release the pressure instantly for flash explosion treatment;

[0020] (3) Chlorine bleaching: Rinse the segmented hemp after flash degumming in step (2) three times with water to remove the flash degraded and separated substances attached to the s...

Embodiment 2

[0027] A kind of mechanical rolling-flash explosion-combing impurity removal combined hemp degumming method, the steps are as follows:

[0028] (1) Pretreatment: Untie the tied hemp and spread it flat, feed it into the hemp mechanical rolling machine at a speed of 2m / min, and get the hemp bundle after being rolled by the output roller; Cut into 30cm-long sections of hemp; immerse the section of hemp in water for pre-wet treatment with a bath ratio of 1:15, and add 1g / L penetrating agent for 90 minutes;

[0029] (2) Flash explosion: take out the segmented hemp obtained after the pretreatment in step (1), cool it for 2 hours, keep it in a 4.5MPa pressure vessel for 240 seconds, and release the pressure instantly for flash explosion treatment;

[0030] (3) Chlorine bleaching: Rinse the segmented hemp after degumming in step (2) five times with water to remove the degraded and degraded substances attached to the surface of the segmented hemp fiber; then put the segmented hemp into...

Embodiment 3

[0037] A kind of mechanical rolling-flash explosion-combing impurity removal combined hemp degumming method, the steps are as follows:

[0038] (1) Pretreatment: Untie the tied hemp and spread it flat, feed it into the hemp mechanical rolling machine at a speed of 1m / min, and get the hemp bundle after passing through the output roller top roller; the rolled hemp bundle Cut into 20cm long hemp; immerse the hemp in water according to the bath ratio of 1:12 for pre-wet treatment, add 1g / L penetrant, and soak for 800 minutes;

[0039] (2) Flash explosion: Take out the segmented hemp obtained after the pretreatment in step (1), cool it for 1.5 hours, keep it in a 2MPa pressure vessel for 120 seconds, and release the pressure instantly for flash explosion treatment;

[0040] (3) Chlorine bleaching: Rinse the degummed hemp in step (2) four times with water to remove the degraded and degraded substances attached to the hemp fiber surface; then put the hemp in warm water at 60°C, and ...

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Abstract

The invention relates to a mechanical rolling-exploding-carding for edulcorating combined degumming method for hemp, belonging to the technical field of textile fiber processing. A product hemp fiber with original color is obtained through pre-treatment, explosion, chlorine bleaching, drying, edulcorating and post-treatment. The hemp fiber produced by the method provided by the invention is fluffy and flexible, and shows the original color of the hemp. The lignin content can be reduced to below 1%, the fiber fineness ranges from 200 to 600 Nm, and the process fiber is 25mm-50mm long. According to the degumming method provided by the invention, except for a spinning lubricant agent which has a softening effect, a penetrant, sodium hypochlorite and crude oil, any other chemical reagent is not used in the whole degumming process, so that the environment-friendly physical degumming method is free from environmental pollution and damage to fibers.

Description

technical field [0001] The invention relates to a method for degumming hemp combined with mechanical rolling-flash explosion-combing and impurity removal, and relates to a process for preparing natural textile fibers, specifically a mechanical rolling-flash explosion-combing impurity removal combination hemp degumming method. The method is also applicable to the preparation of other hemp fibers such as ramie and flax, and belongs to the technical field of textile fiber processing. Background technique [0002] Hemp belongs to bast fiber. To be used in textile and garment processing, it must go through degumming process to obtain spinnable fiber before it can be used. Compared with ramie and flax, the non-cellulose content in hemp raw hemp exceeds 40%, especially the lignin content It is obviously higher than ramie and flax, which greatly increases the difficulty of degumming, and also becomes the focus and difficulty of hemp degumming. Because there is no need for fertiliza...

Claims

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Application Information

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IPC IPC(8): D01B1/14D01C1/02
Inventor 殷祥刚谢江
Owner 无锡恒隆纺织品有限公司
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