Stripping (textiles)

Right-first-time production in textiles entails achieving correctness on the initial dyeing attempt, resulting in a reduced need for stripping, rework, or redyeing.

This approach can be employed to rectify any complications encountered during the dyeing process or to alter the color of surplus fabric for subsequent utilization.

This method entails the selective extraction or displacement of dye molecules from the textile substrate without causing significant damage to the fabric itself.

[2] The objective is to reverse or weaken the chemical bonds that hold the dye molecules to the textile fibers, allowing them to be lifted or washed away.

[8] These dyes, as suggested by their name, possess an inherent capacity to chemically react with the hydroxyl groups present in cellulosic materials, resulting in the formation of covalent bonds.

[4] To remove certain azoic combinations, 1 gram of Hydrosulfite and 6 cubic centimeters of caustic soda 77TW [a 32% solution of Sodium Hydroxide][10] is recommended.

[4] The main ones, excluding sodium hydrosulfite, are:[4] Stripping reactive dyes with ozone is an alternative technique that replaces traditional chemicals, offering a more ecologically sound approach.

[12] The stripping of certain reactive dyes, such as Black B, can be achieved using five indigenous strains of white rot fungi (WRF), particularly Ganoderma lucidum, in Kirk's basal salts medium.

[13] Textile manufacturers frequently grapple with the challenge of uneven and inadequate dye distribution, which adversely affects the final quality of fabrics.

It is actively pursuing chemical-based recycling solutions tailored for all primary fiber types, including cellulosic materials like cotton, as well as synthetics such as polyester and nylon.

Processes like oxidation and photodegradation, which fall under dye-destruction, often result in polymer damage and can lead to changes in the dyeability of regenerated fibers.

[17] While dye-extraction is a frequently employed technique in forensic science, it falls short of achieving complete color removal from textiles.