TEXTILE WET PROCESSING AND THE ENVIRONMENT

Dyers, printers, and finishers are seeking ways to reduce the environmental impact of their processes. There are currently three main approaches that wet processors can adopt to minimize the effluent problem: reducing volume and toxicity of discharges; recycling and reusing water, colorant, and other useful constituents; and making use of..

STRIPPING OF CATIONIC DYES FROM CATIONIC DYEABLE POLYESTER

Dyes can be stripped from fabric when unevenness has occurred. Either all or partial stripping of th edye can be accomplished. Reducing agents, such as sodium hydrosulfite and zine sulfoxylate formaldehyde, are most widely used to strip dyes. Stripping was conducted using Dedenol Super N, Dedenol OT, and Lynoxyd AR on 100 percent cationic..

UNIVERSAL JEGGER FOR PRETREATMENT, DYEING, AND SPECIAL TREATMENTS

The design of the Twin Jig finishing jigger, manufactured by Kuesters, features a double-bath process that reduces the concentration of dyes, salts, and auxiliaries in waste effluent. The design induces a counter-current water flow from the front to the back trough during washing, which saves water and efficiently recirculates the dye liq..

AIRTINT ROPE DYEING AND POST-TREATMENT MACHINE

ATYC introduced the Airtint rope dyeing machine at ITMA 1991. The machine achieves high running speeds by using an airstream to transport the fabric. The Airtint unit functions as a tumble dryer after dyeing, enabling fabrics to obtain a soft, voluminous hand. The Airtint unit features the Microlor-III supervisory system, a microprocessor..

PROBLEMS WITH FINISHING AND FASTNESS PROPERTIES WHEN DYEING POLYESTER MICROFIBERS FOR SPORTSWEAR.

Problems associated with finishing and dyeing fabric woven from polyester microfibers are reviewed. After weaving, desizing is performed on an open-width machine to prevent irreversible creasing. The high surface area presented by the microfibers is responsible for many of the dyeing properties. The dyeing rate is faster, which causes pro..

MODERN SINGEING TECHNOLOGY -- ESSENTIAL FOR ALL TEXTILE FINISHERS.

Singeing, the burning of protruding fiber ends to improve the wear and appearance of a fabric, is essential to the production of quality fabrics. Singeing faults include uneven effects, stripes, thermal damage, formation of carbonized fiber beads, and reduction of tear strength. Singeing problems are compounded by the fact that nearly all..

DORNIER CIRCULAR SINGEING MACHINE -- NEW QUALITY STANDARDS FOR TUBULAR KNITTED FABRICS.

The finishing of circular knitted fabric requires perfect pretreatment, including singeing. Singeing creates a nap-free surface, prevents pilling, and produces a soft hand. Dornier has developed a singeing machine to treat all types and diameters of circular knitted fabrics in the tubular state. The machine features a tubular fabric sprea..

TECHNOLOGICAL PECULIARITIES OF ALKALINE CRIMPING OF COTTON FABRIC BY THE RESIST METHOD

Alkaline crimping of cotton fabric by the resist method was examined. The effects of such basic parameters as the concentration of the sodium hydroxide solution, fabric structue, and the quantities of water-repellent agents and crosslinking agents in the resist printing paste on the quality and stability of the crimping were measured. To ..

CREATIVITY LEADS TO TOP-CLASS PERFORMANCE -- WHERE DO WE STAND WITH REACTIVE DYES IN THE HOT EXHAUST-DYEING SECTOR

The hot exhaust reactive dyeing process for cellulosic fabrics is discussed. Characteristics of the padding and exhaust methods and advantages of cold/warm and hot-dyeing techniques are reviewed. The properties of reactive dyes most important for hot dyeing are a high degree of exhaustion and fixation, good leveling properties, good solub..

DYEING FABRICS USING THEIR ELECTRICAL CONDUCTIVITY

Naigal Special Dyeing Company has developed a method of dyeing fabrics by conducting elecricity through them. The method is described in United States patent 5 102 423. The fabric is impregnated with a solution or a dye liquor and placed between two electrodes. A current passing between the electrodes, and through the fabric, causes the f..