The Textile Production Process - 4

The Textile Production Process

Subject: The Textile Production Process

Date:16-May-2011 Related Industries:Chemical, Textile

Textile

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pH Regulators

The pH influences the absorption of anionic dyes by wool and/or polyamide fibers and in the setting of reactive dyes in cellulose fibers. By controlling the pH, it is possible to improve the coloring during the absorption phase, or to control the color-setting when dying polyester cotton blends with reactive or dispersant dye.

Dyeing accelerators

Accelerators are used in processes for depletion dyeing of synthetic fibers to increase the absorption rate of color scattered into the fiber, to provide more rapid diffusion within the fiber, and to improve the performance of the dye.

5) Finishing

Finishing includes all of the mechanical and chemical operations that are subjected to threads and fabrics. It consists of the pre-treatment processes, bleaching, dyeing, fixing, printing, and post-treatment (sizing, drying, ironing and other less common operations, for example, those used with suede and velvet).

6) Washing and Other Cleaning Operations (Pre-Treatment)

Pre-treatment processes are used to prepare the fabric for subsequent processes such as bleaching, dyeing and printing. Cleaning processes, extraction and bleaching remove materials discovered in the fibers (e.g. sizing used in the fabric), so that the reactive groups of the fibers, previously blocked by the impurities, are exposed and the basic fabric is improved for the next process.

For a coarse material made of natural fibers such as cotton, linen, wool and silk, the pre-treatment process is more complicated than for those made of synthetic fabrics. For example, cotton fabric can contain more than 20% of materials that can interfere with these processes.

Because polyester textiles contain only solid particles (small synthetics that are water soluble), only a simple washing process is needed. The processes used depend on the formation of the fiber and the equipment available. Also, pre-treatment processes are specific to the substrate, so there is a wide range of chemical reactions and physical-chemical processes involved.

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The Textile Production Process - 4