WASTE MINIMIZATION IN THE DYEHOUSE.

Pragmatic waste minimization strategies offer the textile dyer the ability to address environnmntal concerns and maintain profits. A study of waste minimization in the dyehouse compares the enviromnetal impact of printing and several dyeing processes-batc, semicontinuous, and continuous. The analysis segregates costs by process, including..

REMOVING INK STAINS.

Ink stains are classified as either dryside or wetside, depending on the solvent or substance on which the dye is dissoived. Dryside inks comprise pigments dispersed in an oil, wax, or grease base. Marking ink, printing ink, ball point ink, and carbon paper are examples of dryside inks. Wetside inks comprise dyes dissoived in water. A set..

FLASH STEAMING ADVANCE.

The Arioli Flash Ager is proving to be successful in printing factories that are subject to regulations governing the use of hygroscopics. The flash Ager fixes reactive dyes by using a two-step process. Cotton or viscose fabrics are printed without fixing agents. Fixing agents are applied later on by a special pad mangle located under the..

SOLUTION FOR FINISHING AND DYEING FELTS.

A new method of incorporating dyeing and finishing liquids directly into felts in recommended. The liquors are injected through cannulae into the interior of the felt and completely penetrate the fabric structure. Injection is accomplished by passing the fabric over a flat needle matrix. Excessive liquor is removed by a squeeze roller. Th..

OVERVIEW OF THE PROBLEMS ENCOUNTERED IN THE BATCHWISE PROCESSING OF WOVEN AND KNITTED PIECE GOODS.

Common problems encountered during the winch dyeing of woven and knitted fabrics include creases, streaky dyeing, abrasion, elongation, patchy dyeing, tailing, distortion, deformity, entanglement, and poor reproducibility. Most often, dyeing problems can be traced to limitations of the dyeing equipment or limitations in the experience and..

AUTOMATIC DYEING SYSTEMS IN CARPET MANUFACTURING.

Dalton Industrial Systems' Instacolor, a continuous flow metering and measuring system, produces specified shades on carpets from three prtmary color dyestuffs. The system comprises two flow meters and a valve control for each promary dye. Precise control of dye flow allows for quick delivery of a continuous and homogeneous blend. The sys..

Accelerated Light and Weather Exposure Test Unit Improved.

Weiss Umwelttechnik recently upgraded its Weiss BAM Global-UV laboratory test unit. The Weiss BAM Global-UV simulates the photochemical deterioration of such materials as plastics (according to the DIN 53 384-B and 53 384-C test methods), polymer based coatings, textiles, and paints (according to the NF-P 84 402 test method). The test uni..

Color Quality Control.

Datacolor International recently introduced its Dataline portable spectrophotometer. According to the Swiss company, the Dataline facilitates on-site, laboratory standard color measurements of many different fabric types. The Dataline uses a pulsed xenon light source in conjunction with a dual beam comparative spectrophotometer. An integr..

On the Problems of the Photometric Determination of Dyestuff Concentrations in Dyebaths.

Photometric methods were useful for determining the concentration of dyestruffs in dyebaths. The effectiveness of online determiantion was verified for exhaust dyeing processes using water soluble metal complex dyes in dyebaths for processing nylon and reactive dyes in dyebaths for processing cotton fabrics. The dye liquor was fed continu..

Chemical Testing and Analysis.

This comprehensive overview of chemical testing and analysis in the textile industry includes chapters on identification (fibers, dyes, and finishes), structure (molecular, macromolecular, and microfibrillar), quality (wool and cotton), dyeing and finishing (performance, permanence, and resicual effects), chemical attack (causes during us..