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A kind of flax material with low skin irritation and its preparation process

A technology of skin irritation and preparation process, applied in the field of clothing materials, can solve the problems of difficult skin itching, the microscopic crystal form of flax fiber has no particularly significant effect, and is not widely used, and achieves improvement of hand feel, improvement and elimination of itching. The effect of feathers

Active Publication Date: 2017-08-25
ZHEJIANG CHAOFAN GARMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, some latest studies have proposed that the use of plasma irradiated linen fabrics combined with the above-mentioned chemical softening can improve the softening effect more effectively, but it is still in the exploratory stage and has not been widely used in industrial production.
However, no matter which softening method is used above, it does not have a particularly significant effect on the improvement of the microscopic crystal morphology of the flax fiber, so the flax fiber will still have a certain degree of rigidity after treatment; although the entire textile will become soft after treatment. The sexiness has been strengthened, but because the feather thorns belong to the very fine fiber end protrusions on the surface of the textile, and still maintain a certain hardness, it is difficult to completely disappear the skin itching.

Method used

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  • A kind of flax material with low skin irritation and its preparation process

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Experimental program
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Effect test

Embodiment I

[0035] Preparation of cellulose solvent: In this embodiment, LiCl / DMAC solution is selected as the cellulose solvent used in the process of removing burrs. Weigh a predetermined amount of LiCl into DMAC, heat and stir to promote the complete dissolution of LiCl in DMAC. Wherein, the mass concentration of LiCl in the LiCl / DMAC solution is 8wt%-15wt%, preferably 8wt%-10wt%. When the concentration is less than 8wt%, the cellulose cannot be completely dissolved, and the concentration is greater than 15wt%. %, the solution will be supersaturated; the heating temperature of LiCl in the DMAC dissolution process is 100 degrees Celsius, the stirring time reaches more than 30 minutes, and the stirring speed is 900 rpm.

[0036] Pretreatment of flax fiber textiles: cellulose needs to be activated before dissolving in LiCl / DMAC solution, and part of the hydrogen bond structure of cellulose is destroyed through activation; therefore, flax fiber textiles should be pretreated. The pretreatm...

Embodiment II

[0044] Preparation of cellulose solvent: the present embodiment selects NaOH / Urea / Thiourea / H for use 2 O mixed solution was used as the cellulose solvent applied in the process of feather removal. Put NaOH, urea, and thiourea into water according to a specific mass ratio and mix them to form the NaOH / Urea / Thiourea / H 2 O mixed solution; the mass concentration of NaOH in the mixed solution is 7wt%, the mass concentration of urea (Urea) is 12wt%-24wt%, and the mass concentration of thiourea (Thiourea) is 9wt%-18wt%. NaOH / Urea / Thiourea / H 2 The O mixed solution rapidly dissolves the cellulose in the flax fiber and needs to be cooled to a low temperature below -5 degrees Celsius, preferably cooled to -12.5 to -15 degrees Celsius.

[0045] Pretreatment of flax fiber textiles: cellulose dissolved in NaOH / Urea / Thiourea / H 2 The O mixed solution needs to be kept at a low temperature below -5 degrees Celsius, so the flax fiber textiles can be placed in a refrigerated environment and co...

Embodiment III

[0054] Preparation of cellulose solvent: In this embodiment, PF / DMSO solution is selected as the cellulose solvent used in the process of removing burrs. Put the vacuum-dried paraformaldehyde (PF) into DMSO, heat and stir to promote the dissolution of PF in the DMSO solution. The heating temperature is from 100°C to 110°C, the stirring time is more than 1 hour, and the stirring speed is 900rpm. The mass concentration of PF in the PF / DMSO mixed solution is 3wt% to 6wt%, preferably 5wt% to 6wt%. If the mass concentration of PF is greater than 6wt%, the solubility of the mixed solution to cellulose will decrease.

[0055] Pretreatment of flax fiber textiles: cellulose needs to be activated before dissolving in PF / DMSO solution. Put the flax fiber textiles in ethylenediamine solution for 10-20 minutes, and then wash them with methanol and water successively. Dry at a temperature of 80 degrees Celsius. Through the above pretreatment, the solubility of cellulose in the flax fiber...

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Abstract

The invention provides a flax material with low irritation to skin and a preparation technology of the flax material. The preparation technology of the flax material comprises steps as follows: preparation of a cellulose solvent, pretreatment of a flax fiber textile, high-speed blowing spraying of the solvent, dissolution and washing of the flax fiber textile, wherein high-speed blowing washing is performed on the surface of the flax fiber textile with the cellulose solvent, flax fiber spines standing on the surface layer of the textile are dissolved and fall off, so that the irritation of the flax fiber textile to the skin is relatively thoroughly eliminated when the flax fiber textile is used as close-fitting fabric, besides, the washing manner cannot damage the fiber structure of the textile.

Description

technical field [0001] The invention belongs to the field of clothing materials, in particular to a flax material with low skin irritation and a preparation process thereof. Background technique [0002] The use of linen fiber textiles as clothing material has a very old history. Flax fiber textiles have the advantages of strong hygroscopicity, high mechanical strength, good water resistance, and antibacterial properties. Using it as a clothing material can achieve breathable, cool, beautiful, and healthy effects. However, microscopically, flax fibers are stiff and inflexible, so the ends of the fibers on the surface of the textile form vertical quills. If these quills directly contact with human skin, it will cause itching and discomfort, which offsets the other advantages of flax and seriously restricts the application of flax fiber textiles as clothing next-to-body fabrics. [0003] The main methods to overcome the skin irritation of flax fiber textiles in the prior art...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/05D06M11/13D06M11/60D06M13/432D06M23/00D06M101/06
Inventor 黄健芳陶剑航
Owner ZHEJIANG CHAOFAN GARMENT CO LTD