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Q What are the three 3 stages of dyeing?
A The dyeing process takes place in three phases: attachment of the dye molecule to the surface of the fiber, penetration into the intermolecular spaces as well as diffusion through the fiber and orientation (and fixation) along the long chain molecules.
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Q What are dyeing auxiliaries?
A Dyeing auxiliaries are defined as chemicals or formulated chemicals which enables a processing operation in dyeing to be carried out more effectively. Dyeing auxiliaries includes dye fixing agents, cationizing agent, dispersing & leveling agents etc.
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Q What is exhaustion used with dyeing auxiliaries in textile processing?
A In the exhaustion process attained through the optimal use of dyeing auxiliaries absorbs the dyes and the material comes in contact with the dye liquor. As a result, the rate and extent of dyeing process is determined through dye bath exhaustion. We ensure the eco-friendly auxiliaries are used for exhaust dyeing achieve better properties of the fabric.
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Q What are the dyeing auxiliaries to improve color fastness?
A Fixing agent, wet rubbing fastness improver agent, dispersion accelerator
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Q What is the difference between ash substitute and soda ash?
A In the dyeing process, soda ash only acts as a dyeing accelerator, and the intensity of sewage treatment is increased.
substitute alkali is a new type of environmentally friendly product developed for the high cost of soda ash and trisodium phosphate in the exhaust dyeing of reactive dyes, the inconvenience of use, the instability of color fixation with caustic soda, and the dark shade. While reducing the cost of alkaline agents, it can also improve the first-time success rate of dyeing and significantly reduce the overall cost of dyeing.
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Q How to choose textile printing and dyeing auxiliaries correctly?
A Have a basic understanding of the solubility of additives and their stability to hard water and metal ions; the acid and alkali resistance of additives must be tested; the ionicity of additives must be grasped; do not arbitrarily reduce the amount of additives ; additives must be dissolved and diluted before adding to the finishing solution.
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Q What are the causes of stains in cylinder dyed fabrics?
A The chemical raw materials are not uniform enough; the gray cloth is not clean; the hardness of the water is too high; the heating rate of dyeing is not properly controlled; the use of dyeing auxiliaries is improper; the quality of the dye is poor.
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Q What is the purpose of dyeing auxiliaries?
A Dyeing auxiliaries includes dye fixing agents, cationizing agent, dispersing & leveling agents etc. They help in stabilizing the dyeing bath to improve the exhaustion, achieve level dyeing and improve fastness properties.
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Q What is the difference between crease and wrinkle?
A As defined by the brown researchers, the wrinkle state is when peaks and troughs start to form on the surface, like waves on the ocean. The crease state is when a distinctly sharp groove is formed on the surface.
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Q Why anti creasing agent is important?
A Anti-creasing agent is a kind of dyeing auxiliary, which can be used in wet finishing finishing agent of any fiber fabric which is prone to form wrinkles, creases, chicken paw prints and abrasion marks.
