Non-Destructive Near-Infra-Red Analysis for the Identification of Dyes on Textiles

Researchers investigated the capability of near infrared (NIR) spectroscopy to perform nondestructive identification of dyes present on dyed textiles. An NIR Systems model 5000 scanning spectrophotometer measured the spectra of 26 undyed fabric samples, 2

Aerodynamic Dyeing Machine.

Maschinen- und Apparatebau GmbH's THEN-AIRFLOW AFS with aerodynamic system features the latest in air jet dyeing technology. Various modifications with respect to coloration, surface appearance, and hand are possible when processing the most recently developed fibers, such a lyocell. Advantages of the new aerodynamic system are discussed.

The effect of Dimensional Control on the Development of Hygral Expansion during Dyeing.

To determine the quantitative relationship between hygral expansion and fabric dimensions, researchers dyed samples of woolen fabrics that had been stretched by different amounts in the warp and weft directions. When dyeing a woolen gabarding fabric at 10

Image Analysis for Detecting Color Defects in Dyed Wool Fabrics

Researchers developed a quick and efficient monitoring system that is complementary to colorimetry and can be placed online for rapid color defect determination of wool challis and wool/coton fabrics. The system comprises a television camera linked to a p

Eco-Friendly Processing of Jute Fabric

Researchers studied jute dyeing and printing with sulfur dye and liquid jaggery as a reducing agent. Researchers scoured jute fabric with sodium carbonate and soap and bleached it with hydrogen peroxide, using sodium bicarbonate and the stabilizer AWNI as

Physical properties and dyeability of silk fibres modified with ethoxymethacrylate polymer

The structure, physical properties and dyeing behavio9ur of silk fibres chemically modified with ethoxyethylmethacrylate (ETMA) are discussed in relation to the add-on. Maximum add-on is attained after 60min at 80℃. the modification does not affect the tensile properties of the silk fibres. Infrared spectra show that there is evidence fo..

Development of colour matching methods in the colouring of cotton/Lavsan fabrics

a method, based on the CIELAB system, for selecting disperse and reactive dyes for the tone-in-tone dyeing or printing of cotton/polyester fabrics is presented. To obtain uniform shades on the fabrics the shade difference must be not more than 5 units.

Machines for discontinuous dyeing

Exhibits at ITMA '91 in the field of discontinuous dyeing are reviewed: jet and overflow dyeing machines, open-width piece dyeing on jiggers, and yarn dyeing machines.

Dyeing in supercritical carbon dioxide. A discussion with Josef Jasper

The technical side of high-pressure equipment for this method of dyeing of polyester is discussed. Other topics are the nature of supercritical carbon dioxide, recycling of the carbon dioxide, the greenhouse effect, and safety at work.

ITMA report 1991. Laboratory dyeing equipment