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Textile Processing Technology
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Pretreatment of Textiles |
Pretreatment is the heart of textile processing. Grey cloth (yarn or fiber) contains numerous natural as well as added impurities which hinder the successful carrying out of subsequent processing steps like dyeing, printing and finishing.
In Pretreatment, all these impurities are removed and fiber is brought to a stage where it is more absorbent and white and can be easily processed. |
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Dyeing of Textiles |
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To understand the Dyeing
of Textiles, we need to know something about the nature of the textiles themselves. Textile
fibers are made from relatively simple molecules that under the right conditions join together to form long-chain molecules called polymers. These polymers in turn come together in one of a number of ways to form a
fiber. With natural fibers nature has done the polymerization, while in the man-made
fibers the chemistry of the fibers has been engineered in the laboratory to produce a
fiber that feels nice, can be woven or knitted, and can be dyed. |
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Finishing of Textiles |
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The final operation in textile processing is finishing. Finishing imparts the required final feel, touch, softness, luster, handle and so many subjective qualities to the fabric or yarn. This treatment may either be a superficial
coating or a permanently bonded chemical link. Generally the following all or some of the operations will be carried out during
finishing
process. viz., 1) Application of chemical finishes, 2) Drying wet textiles, 3) Curing chemical finishes
and 4) Coating and laminating.
Some of the popular finishes are 1) softening finishes, 2) Hand building finishes, 3) Easy care and durable press finishes, 4) Repellant Finishes, 5) Soil-release finishes, 6) Flame-retardant finishes, 7) Non-slip finishes, 8)
Antistatic finishes,9) Anti-pilling finishes, 10) Elastomeric finishes, 11) Finishes to improve color fastness, 12) Ultraviolet protection finishes, 13) Antimicrobial finishes, 14) Insect resist and mite protection finishes, 15) Finishing with
Enzymes, 16)Anti-odour and fragrance finishes.
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Bio-technology: |
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The wonders of enzymes from desizing to finishing in textile processing. Its eco-friendly use in the effluent treatment to decolorize the discharge water. |
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General
Principles & calculations:
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Basic
calculations, useful conversion tables and
formulae for all wet processing applications. Padding principles, types of
padding methods, calculations involved, CPB chemical feed systems, mangle
expressions and so on. A quick reference guide to all processing people.
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