PAD-BATCH DYEING OF WOVEN FABRICS.

Continuous pad-batch dyeing system result in good quality, high fixation rates, and low environmental pollution, and are simple to operate. Complex systems can be installed for a relatively low investment. A minimum 12-hour batching time is recommended for short-dwell pad-batch dyeing of cotton and cotton/poly woven fabrics, except for tu..

PROBLEM SOLVING IN CONTINUOUS DYEING OF COTTON AND POLY/COTTON FABRICS WITH VAT AND DISPERSE/VAT DYES.

Optimal procedures are developed for preventing problems frequently encountered during continuous dyeing cotton and polyester/cotton fabrics with vat and disperse/vat dyes. Common operating problems include bad side-center-side shading, spotting, inconsistency of shade within a dye lot, and poor repeatability of shade from one production ..

TRANSFER OF LABORATORY DYEING DATA TO INDUSTRY.

Production efficiency in dyeing can be significantly increased when results achieved in the dye laboratory are accurately duplicated in industry. Critical parameters and machinery and equipment used in dyeing both in the laboratory and in industry are detailed for cotton and polyester blends. Samples for laboratory dyeing are frequently p..

METERING SYSTEMS FOR THE OPTIMIZATION OF PREPARATION AND COLORATION PROCESSES.

Two factors spur the development of automatic requlatory systems for textile dyeing and finishing: advances in low-cost computer-controlled microprocessors and greater awareness of the risks associated with the handling of dyes, pastes, colorants, and auxiliaries. Software must be standardized and processing parameters catalogued for vari..

DYE SYSTEMS AIM FOR COST CUTTING.

Dyeing and finishing machinery manufacturers featured machines that reduce costs and process finer fabrics at the 1991 ITMA exhibition in Hannover, Germany. Manufacturers also placed emphasis on machines that reduce the number of processing steps required, save water and energy, and increase flexibility. Thies, NTM Obermaier, Sclavos, and..

ELECTROCHEMICAL WASTEWATER TREATMENT TECHNOLOGY FOR TEXTILES.

The Andco process was developed in 1971 to remove toxic metal ions from wastewater. The technology has been extended to treat a variety of wastewater and ground water problems, including those encountered in textile applications. The Andco process can those encountered in textile applications. The Andco process can offer water reuse capab..

SOLVING CREASE PROBLEMS WITH DYEING MACHINERY

Fong's Dynawin combines the best features of the tractor winch dyeing machine with a dynamic liquor circulation system. Fabric, which is stored in and returns to a U-box, is immersed in the dyeing liquor by passing it under the immersion roller. Dyeing liquor is drawn from the bottom of a storage chamber by the circulation pump. A certain..

ANIONICALLY DYEABLE SMOOTH-DRY CROSSLINKED CELLULOSIC MATERIAL CREATED BY TREATMENT OF CELLULOSE WITH REACTIVE SWELLING AGENTS AND NITROGEN COMPOUNDS.

A dyeable cellulosic material was achieved by crosslinking a cellulosic fabric with a methylolamide crosslinking agent. The crosslinking agent was modified by both one or more glycol swelling agents and one or more salts of a hydroxyalkylamine or a hydroxyalkyl quaternary ammonium compound.

SIMULTANEOUS OXIDATIVE AND REDUCTIVE PHOTOFADING OF C.I. REACTIVE RED 22 AND BLACK 5 ON CELLULOSE IN THE PRESENCE OF OXYGEN AND SUBSTRATE UNDER WET CONDITIONS.

Spectral analysis was used to kinetically examine the reductive and oxidative photofading of Red 22 Black 5 on cellulose upon exposure in substrate solutions. In the presence of DL-mandelate and oxygen, the oxidative and reductive fading of both dyes occurred simultaneously from the beginning, and later the oxidative fading was suppressed..

NEW BIODEGRADATION TECHNOLOGY FOR TEXTILE DYES DEVELOPED

The Hong Kong Institute of Biotechnology (HKIB) has announced the development of a biodegradation technology for indigo dyes and other dyes commonly used in the textile industry. HKIB has isolated several microbial strains capable of degrading indogo and its carmine derivative. One of the microorganisms, Stain H-12, can decompose 1.0 gram..