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Reactive Blue GN 198

Reactive Blue GN Reactive Blue 198
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Product Introduction

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1.Do you provide samples for free?

Yes, samples are free.And we are providing 20 grams of each sample.


2.How about the term of payment?

T/T, L/C, Paypal and WestUnion etc.


3.What is the annual output of your factory?

Generally, our annual production can reach 35,000 tons a year just by disperse dyes.

Talk about elastic fabric dyeing problems

    The functionality and fashion of elastic fiber mixed textiles are becoming more and more important in the textile market, and its production plants and production varieties and quantities have continued to increase. Elastic fibers account for only 0.3%of all fibers, but the proportion of textiles with low elastic fiber content is very high. The performance of elastic fibers and its fabrics affects various processes such as pre -processing to fabric finishing. This article discusses the key factors, the selection of product and the recommendation of the process parameters.

Elastic fiber fabrics or knitted fabrics should not be stored for a long time. When spinning and collaterals, a large amount of silicone oil and other lubricants are used to improve spinning; when weaving and knitting, more oil agents and additives are used to ensure their good processing performance. During the long -term storage period, the degradation of these products caused yellowish fabric until the elasticity decreased. "Normal temperature hardening" is a potential problem that can cause lasting creases. If the storage period of the fabric is more than 3 months, it should be closed in an impermeable, non -light plastic film.

The elastic yarn is always weaving into the fabric under a certain tension. The thermal shape can avoid the strip marks and wrinkles during dyeing, ensuring good size stability. Heat is usually set at 180-190 ° C for 30-45 seconds. Higher temperature causes yellowing fiber to turn yellow and decreased elasticity.

Because silicone oil and lubricant will destroy the uniformity of the dye and reduce the color fastness, you should try to remove it from the fabric before dyeing. Elastic fiber blended chromatics before dyeing oil is usually invisible, but metal complex dyes are pro -oil, that is, the oil spots on the gray cloth are closely close to it at the beginning of the dyeing process. When the dyeing temperature rises, the oil agent is emulsified, but the dye is retained and the irritated spots are caused.

Cold water after washing cannot be used, because this will make the emulsified oil precipitated again, causing spots on textiles. The most effective way is to completely overflow with hot water and clean up with cold water.

During the process of dyeing, high temperature and mechanical stress can cause fabric elastic losses. In order to preserve its elasticity, the elastic fiber content in textiles exceeds 10%of the elastic fiber should be dyed on the slow -flow jet. The fabric with the elastic fiber content less than 10%can be dyed on the air jet.

The wetting level of polyamide and elastic fibers is lower than that of pure spinning polyamide fiber. Experience shows that the alkaline pH value is a practical method that reduces the dye dyeing speed of Lanaset dyeing and improves uniformity.

Polyester fibers are increasingly used for elastic fabrics. This is a challenge for dyeing: on the one hand, decentralized dyes require high temperature, and on the other hand, the elasticity of elastic fibers is greatly reduced at temperatures exceeding 115 ° C. Another obstacle to processing this blending fabric is that the dye dye is contaminated with elastic fibers in large quantities and its wetness is very low.

The new decentralized dye CIBAPB allows to use TERASILW dyes at different temperatures, and ensure that elasticity is not lost. The recommended PB dosage depends on the required color concentration. Polyester and elastic fiber mixed textiles need to be completely restored after dyeing. Generally, the restore of polyester fibers is completed with insurance powder, alkali and OS at 70 ° C temperature. In order to clear the dispersed dyes on the elastic fibers, the temperature needs to be between 80 ° C-90 ° C. The normal insurance powder response is too fast, so it is invalid. If decentralized dyes are removed from elastic fibers, OS is the only effective product to restore and clean. Proper temperature, stable insurance powder and good dispersing agents will determine the most suitable restore and cleaning.

The more elastic fibers in the cellulose and elastic fiber -mixed textiles, the greater the risk. Careful choosing active dyes that to ensure swimming when the fiber fiber is fixed is the only way to achieve good results. Compared with other active dyes, the use of Cibacronls dyes can greatly reduce the amount of salt; because these dyes are low sensitivity to the change of bath ratio, it is an ideal choice for dyeing cellulose and elastic fiber -mixed woven fabrics. Especially for recycled cellulose fiber, the process of adding salt in batches in dyeing is recommended. Dyeded fiber fiber only requires 70%of the amount of salt in the amount of salt.

Wool and elastic fiber -mixed textiles have obtained additional functionality and good use performance due to increased elastic fiber content. Mixing elastic fibers and wool improves its size stability and anti -wrinkle. In the dyeing process, Puerangus is usually recommended. Good surface uniform dyes require good swimming dyes. Cibane -organ dyes are very suitable. When the pH value is 3.5, even in the traditional dark color, you can get satisfactory coloring.

What is even more tricky is a fabric blended with polyester, wool and elastic fiber. Due to the sensitivity of wool to strong alkaline conditions, it is difficult to strengthen the decentralized dyeing dye on the elastic fiber. In particular, black and Tibetan blue is more restricted. The use of decentralized dye promotion agents can ensure good reproducibility and reduce the dye dye dyeing dyeing dyes of wool and elastic fibers. Under the condition of weak alkaline (ammonia adjustment pH value of 8.5) conditions, a stable insurance powder is used with a moderate reduction of 45-50 ° C for 20 minutes to ensure the improvement of the wet fastness characteristics.

The pre -treatment, dyeing, and finishing of elastic blending fabrics, such as retraction, thermal fixation, and washing, the wet and humid pre -processing depends on the fabric structure and its sensitivity to the mechanical stress. The right machine is critical to maintain high elasticity, good uniformity and reproducibility. To understand all parameters, the correct product selection and careful process adjustment will help to get the best performance in elastic textiles.

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