Wastewater depuration in surfactant plants (Spanish)

The most adequate purification processes to eliminate the different types of water contaminants, according to their physical and chemical characteristics, are indicated. Some practical applications of the respirometric techniques for the segregation of not very biodegradable effluents or inhibitors, which could hinder biological treatment..

Radio frequency air aspiration drier (Italian)

The TCRFD ratio frequency/air aspiration drier for yarn on bobbins produced by the Italian firm Loris Bellini SpA in collaboration with Stalam is described. The drier consists of a modular drying cell, radio frequency electrodes, centrifugal air aspirator, a radio freqency generator, centrifugal ventilator, weighing system and industrial ..

Danufil deep dye - a new generation of viscose fibres

Due to their physiological characteristics in clothing, viscose fibres have enjoyed uninterrupted popularity. Consumers are becoming more and more aware of the fact that this so-called artificial silk is actually a natural product made from the regeneratable raw material wood. Viscose is ideal for several areas of employment. Its silky qu..

Improving the light fastness of disperse dyes on polyester fiber

This paper discusses the various mechanisms which cause lightfastness deterioration on polyester fabrics when dyed with disperse dyes, and furthermore, introduces the Sumikron UL GX series of disperse dyes for polyester automobile fabrics.

Low temperature wool dyeing kinetics (Spanish)

The action of two commerical non-ionic products on the aggregation of two acid dyes for wool is examined in this paper very little interaction between the acid dyes and the auxiliary products having been observed. The influence o the concentration of the auxiliary products, pH and temperature on the dyeing kinetics are also analysed. The ..

Jet dyeing machines: developments towards maximum flexibility

The importance of jet dyeing machines is evident from the wide variety of machines of this type on the market. The dyeing process and machinery must be designed to suit the individual requirements of the constantly changing fabrics, some more critical than others, and their different finishing needs. This article discusses the latest deve..

The Penta Jig PJSW - maximum flexibility, prodectivity and quality in discontinuous preparation and dyeing in open-width (Italian)

The Penta Jig fabric preparation and dyeing machines produced by the Italian firm Texcel Italia are presented. The PJ, PJS and PJSW series carry out the technological processes involved in fabric preparation and dyeing with maximum flexibility and quality, even with limited production runs. The series PJS and PJSW Inert are modified to pe..

Present and future of jet-overflow dyeing machines (Italian)

The present state and future trends of jet and overflow dyeing machines are presented. Many innovations have been introduced to improve the dyeing procedure but the introduction of a system based on the jet propulsion of liquid in a conical tube for the movement of the fabric rope by the American company Gaston County marked a major advan..

Recycling of liquors from batch dyeing with substantive dyes (AIF No. 9764) (German)

In this research report dyeings were made on cotton fabrics at a liquor ratio of 1:28 using dyes of identical substantivity. The effect of levelling agents on dye utilization is determined. At the third dyeing no differences can be observed between the initial and subsequent dyeings, despite an average dye loss of 10％.

Reuse of reactive dyebath - dyeing nylon 66, nylon 6 and wool with hydroloyzed reactive dyes under acidic conditions

Dyeability of hydrolyzed reactive dyes was studied. The dyes examined were Reactive Black 5, Reactive Yellow 3, Reactive Red 2, and Reactive Blue 19. Acid Black 1 and Acid Blue 25, which have the same parent structures as the Reactive Black 5 and Blue 19, were also tested as a comparison to the dyeing behavior of the hydrolyzed reactive d..