Single-bath preparation of cellulosic materials

A cellulosic, single-bath technology, applied in the field of degumming and bleaching cellulosic and desizing, can solve the problems of uneven dyeing, uneven removal of cleaning alkaline residues, environmental problems, etc., to achieve uniform dust removal, short processing time, The effect of high moisture absorption
CN1522323AInactive Publication Date: 2004-08-18NOVOZYMES NORTH AMERICA INC
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NOVOZYMES NORTH AMERICA INC
Publication Date
2004-08-18
Estimated Expiration
Not applicable · inactive patent
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Abstract

The present invention provides methods for single-bath desizing, scouring and bleaching of cellulosic materials, which are carried out by contracting the cellulosic simultaneously or sequentially with an enzyme system and a peracid bleaching system under conditions that do not require emptying the bath or rinsing the cellulosic materials between desizing, scouring and bleaching steps.
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Description

field of invention

[0001] The present invention relates to methods and compositions for treating cellulosic materials, and more particularly to methods and compositions for desizing, scouring and bleaching cellulosic materials. Background of the invention

[0002] The processing of cellulosic, such as cotton, fibers into clothing manufacturing materials involves several steps: spinning the fibers into yarns; constructing woven or woven fabrics from the yarns; and subsequent preparation, dyeing, and finishing operations. The preparation process may involve desizing (for textiles), degumming and bleaching to produce a textile suitable for dyeing or finishing.

[0003] A. Desizing: Textiles are the main form of textile fabric construction. The weaving process requires that the bent yarn be "sized" to protect it from fraying. Starch, polyvinyl alcohol, carboxymethyl cellulose, waxes and acrylic binders are examples of typical sizing agents commonly used in the industry. In or...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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