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Correct pretreatment‐the first step to quality in modern textile processing
Author(s) -
Bille Heinz E
Publication year - 1987
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1987.tb01093.x
Subject(s) - cellulosic ethanol , textile , dyeing , raw material , process engineering , pulp and paper industry , effluent , biochemical engineering , quality (philosophy) , computer science , polymer science , waste management , materials science , chemistry , cellulose , engineering , organic chemistry , composite material , philosophy , epistemology
Cotton continues to be a very widely used natural fibre. However, it becomes ever more difficult to define it exactly in chemical terms, because the variety and quantity of non‐cellulosic constituents in the raw cotton are continually increasing in number and becoming more difficult to specify. The textile processor can only count on 75%, or at best 80%, being genuine cellulosic material; the remainder consists mainly of impurities that can seriously interfere with subsequent processes. Modem pretreatment processes take full account of the specific quality requirements, and naturally also the relevant cost factors (energy, effluent, processing costs). By these means the bleacher can now convert raw cotton into a chemically uniform and defined cellulosic textile substrate for the subsequent processes. In this form, either alone or in blends with synthetic fibres, it is accessible for dyeing, printing and finishing processes that can be readily controlled and reproduced.