The application of feedforward profiles in the control of dyeing machinery

This study involves a method of feedforward control based on the use of preset exhaustion profiles. These profiles are linear, exponential, quadratic, and sigmuidal in shape. This has been achieved by monitoring the amounts of dye in the liquor through analysis of the light reflected by an optical cell attached to a pilot scale dyeing mac..

Review of light fading mechanism of dyed materials

After discussing general principles of the fading process and the determinate of light fastness in dyes, the author reports on his own experiments with Rhubarb dye on wool and silk. The specific objective was to study the kinetics of fading of Himalayan Rhubarb and to determine the effect of substrate, mordanting and humidity.

각종 센서와 염색가공 설비(4)

Pollution prevention in the production of dyes and pigments

This paper provides a summary of pollution prevention through waste minimization and source reduction successes and ideas in the production of dyes and pigments. Examples presented include process optimization in the synthesis of azo disperse dyes and pigments and substitution of toxic metals and gentoxic dye intermediates in the synthesi..

Fate of copper in copperized dyes during biological waste treatment I: Direct dyes

Sorption coefficients were measured for 12 direct dyes using sludge from a municipal treatment plant that normally receives dyehouse effluent. Cupric ion sorption was measured as a control. The results show that the direct dyes have average partition coefficients of about 8 × 103 L/Kg and, on average, 91% of the copper is removed from sol..

Oxidative decolorization of dyes in aqueous medium

Options for preventing discharge of color into the environment are discussed with emphasis on oxidative destruction of residual color in spent dyebaths and wastewater. Ozone, hydrogen peroxide activated by ultraviolet light, and Fenton's Reagent are all powerful oxidants that are effective for the destruction of dyes in aqueous medium. Th..

Textiles and the environment from AATCC

Provides a compilation of news, information sources, conference news and technological innovations on the subject of the environmental regulation and impact of textile production. More 대-friendly alternatives are being developed in clothes care and cleaning and in dyeing.

E-colours: Ciba color's new internet-based ordering system

Ciba Specialty Chemicals launched its e-commerce service in 1999, offering customers the option of ordering textile dyes and pigments via the internet. Specially-developed software links the internet interface with the internal Ciba ordering systems. Customers will also be able to obtain product safety data and certificates of analysis on..

Application of information technology in chemical processing of textiles

Chemical processing of textiles is generally carried out in composite mills, independent process houses, decentralized sectors engaged in part processing located in far-flung places, etc. Large variations therefore exist in the finished product. As a result of this it is necessary to standardize the various processes, parameters and metho..

First superheated-steam dryer for continuous dyeing of woven fabrics

The Babco-Therm dryer, developed by Babcock, uses superheated steam as the drying medium. The constant high fabric temperature makes drying and fixing in a single operation possible. The separate dye fixing process required in the pad-dry thermofix process, for example, is eliminated, as is predrying in an infrared dryer. The total treatm..