Pretreatment of textile fabric - SILK PRETREATMENT

Pretreatment of textile fabric is indispensable before the fabric finishing. Here to mainly introduce silk pretreatment:

Mulberry silk is mixed (mainly silk), but it can be done after silk weaving. Silk raw material, because of oil and high content of impurities, pretreatment is need to be processed before spinning.

Silk impurities: 1) fat and wax; 2) pigments; 3) inorganic matter;
4) carbohydrates: polysaccharide substance with sericin protein combined into compound protein and pigment combined into glycoside, or in superfine cellulose fibrous exists in sericin, silk reeling part sericin dissolution and into micro pastel stripping and refined with the sericin loss, but after twisting hard. Micro - antler affects luster, dyeing and freshness.

The principle of degumming: the polar amino acid content of the silk glue protein (18 kinds of amino acids) is high, the unpreformed and curly conformation is much, the crystallinity is low, and it is dissolved and dissolved in hot water. Deviated from its isoelectric point swelling, fast dissolving, at pH 9.5 ~ 10, temperature 95 ~ 100 ℃ dissolve rate faster, and fibroin is stable.

Acid can also dissolve the silk glue, but the complex, such as acid and acid, is not used.
The proteolytic enzyme degumming is mixed with soxine, because the enzyme only has the silk glue.

Degumming method: soap - alkali - soap (surfactant) + weak base agent.
Degumming equipment: hang chute (drum), loose - type open-width scouring machine

Here at HT FINE CHEMICALS, there are lots of textile chemicals for the your fabric processing. Welcome to buy! 




Pretreatment auxiliary is mainly included auxiliary for cotton and its blends, auxiliary for polyester and other general auxiliaries.
pretreatment of textile fabric
pretreatment of textile fabric

The proper pretreatment is very important for textile dyeing and finishing, especially in recent years, customers and consumers strict in dyeing and printing products increasingly, such as color, color fastness, appearance, shrinkage, feeling, more highlights the importance of pretreatment. The main purpose is to make suitable for pretreatment of textile dyeing and printing, and has good uniformity and reproduction, and reduce the reparation dyes, additives and water, energy consumption, improve the rate of manufactured goods, reduce the manpower.
Used in order to eliminate the use of natural or man-made impurity on the fabric, and give full play of the excellent characteristics of fabric, such as white, soft and good permeability, to adapt to the needs of the subsequent process, the pretreatment auxiliaries mainly include wetting agent, penetrant agent, bleach, cleaning agent and so on.
Textile pretreatment chemicals as one part of textile auxiliary chemicals is the first step of textile treatment which is the purpose of removing slurry, oil, wax, and pectin etc impurity, improving absorbent and whiteness of the fabric, and to improve the hand feeling, so as to meet the requirement of subsequent dyeing and finishing process. Pretreatment auxiliaries chemicals can effectively solve the problems.

Comments

Post a Comment

Popular posts from this blog

Hongtu Auxuliary Shares You the Component Analysis and Recipe Restore of Smooth Agent

Image
Smoothing agent  is a kind of textile auxiliary frequently used. It is made using the formula and synthetic technology at home and abroad. It belongs to a class of novel and unique textile smoothing agents. At present, it is mainly used in wool and other animal fiber and cashmere blended fabric. The smooth agent can be emulsified and will not leave oil stains, but now it can not be used for washing silk products, it has the excellent performance of soft and slippery, etc. It has good elasticity and low yellow degree effect. The smooth agent can be in one bath with cationic softener and crease resistant resin. In common, it is especially suitable for padding and impregnation process. It was weakly positive ion, with super smooth feeling and excellent finishing performance and finishing property, so it is especially suitable for clothing and wool yarn. There is another kind of hydrophilic smoothing agent formula, it is in positive, and the main ingredients are an amino polyether, mod...
Read more

Foamless Detergent / Textile Non-foaming Soaping Agent 2006B

Image
Foamless Detergent / Textile Non-foaming Soaping Agent 2006B Suitable for soaping of various fibres that confers excellent soaping fastness without foam and easy wash. [Main composition] Polymer surfactants. [General properties] Appearance: light color to yellow transparent liquid Ionicity: anionic Stability: stable to acid, alkali and electrolytes Soild content: 58% [Product features] 1. Excellent dispersing and scouring performance. 2. Efficiently removes unfixed dyes and prevents staining that confers bright shades to fabrics. 3. Improvers wet fastness and soaping fastness without influence on shades. 4. Does not induce foam that save water. 5. The foamless detergent is suitable for soaping with various equipment. [Application] High concentration product and can be diluted 2-3 times. -- Dyed fabrics: 0.5-2.0 g/L -- Printing fabrics: 2-5 g/L -- If the washing water is hard water, the amount of soaping agent 2006B should be increased appropriately. [Packaging and storage] 1...
Read more

Softener Series

Image
Softening is an important finishing process in printing and dyeing. In this process, after repeating treatment, the hand feeling of fabric will become rough, the general synthetic fiber fabric much worse, especially microfiber fabric. In order to make the fabric soft and smooth, textile finishing process is required, and in this process, the most common used finishing agent is textile softener. Besides, in the chemical fiber spinning, all kinds of fiber spinning, weaving and other processes a large number of textile softeners are also applied. This is because with more and more high speed machining used in textile industry, the attrition between the fabric and equipment increases, leading more abrasions of fabric, and the use of textile softeners can avoid the friction. Therefore, fabric softener is one type of important textile auxiliaries. Textile softener is one of the most widely used agent in dyeing and finishing. According to the chemical structure, fabric softeners can be mainl...
Read more