Novel dye kitchen system

Features of the The Airflow AFS aerodynamic dyeing machine for woven microfibre fabrics, light synthetics and blends, and, with the new soft jet nozzle, also cotton tubular knits and cotton/polyester knitwear are described. The AMC-CKM dye kitchen system, which is computer monitored, is also presented.

New laboratory dyeing machine

The Lab Jet dyeing machine from UK firm, Goodbrand Jeffreys, can process 3-5kg lots of any textile that conventional jet dyers can. Electrically heated, it can be used where no steam is available. The Lab Jet includes integrated automatic process monitoring.

Process for post-bleaching coloured raw cellulose

The method claimed relates to the bleaching of cellulosic materials dyed with direct or reactive dyes, where the materials are treated in a bleaching and after treatment bath which includes the following: stabilizers for an aqueous hydrogen peroxide liquor; cationic monomers; and nonionic surfactants. IPC D06L.

Decolorizing dye wastewater using chitosan

A prototype decolorization unit has been developed to test the feasibility of using chitosan to absorb dyes from effluents. Nine different dyes are tested. It seems that molecular size is the key factor - small, low-molecular-weight dyes sorb best on chitosan. Dyes with metal in their structure do not appear to sorb any better than their ..

Removal and speciation of transition metal ions in textile dyeing wastewaters

Effluent from textile dyeing processes contains products of decomposed dye and unused intact dyes, some of which contain heavy metals. Therefore, free ionic metal and complexed metal, as well as products from the decomposition of the organic part of the dyes, are present in the effluent. Chelating resins provide a method of speciation of ..

Treatment of effluent from a textile process house - towards zero discharge

The technical and economic features of an effluent treatment system for dealing with discharge from a bleaching/dyeing/printing facility are discussed. A combination of reverse osmosis and solar evaporation with recycling is envisaged, enabling approximately 75％ of the water to be recycled, which is highly beneficial in areas where water..

Shade variation in continuous dyieng and material density differences in fabrics - can on-line colorimetry help?

The relationship between fabric shade variation and the density of the fabric is examined. Woven cotton and polyester/cotton fabrics were used for the investigation. Parameters studied included weaving conditions, preparatory treatments and liquor application control in dyeing. The usefulness of on-line colorimetry for reducing crosswise ..

Developments in textile auxiliaries (speciality chemicals)

Developments during 1991 in pretreatment auxiliaries, dyeing assistants, aftertreatments for dyeing, printing assistants and various finishes (flame-retardant, water/oil-repellent) are briefly noted.

Water-soluble film for packaging dyestuffs

A water-soluble film for packaging dyestuffs and pigments has been developed by Aquafilm Ltd of Hartlebury, UK. A way has been found of making blown film from polyvinyl alcohol using standard equipment. As a result, precisely measured amounts of dyestuffs and pigments can be packed in bags or sachets made from the film. When dropped into ..

Low Wash: a new/old approach to rinsing

Low Wash describes the application of an old principle to modem jet dyeing reducing the amount of water and time required for rinsing substantially. Rinsing methods in general and advances in chamber design are reviewed and the new Low Wash technique is explained.