Some aspects of the role of water in dyeing of textile fibres (Serbian) (Neki aspekti uloge vode u bojenju tekstilnih vlakana)

Although the alternative methods of dyeing in nonaqueous environment are developed, water is the most important process medium in dyeing of textile fibres. Except that it is the solvent for great number of dyes, water has also the function of structural activator through the process of hidration of functional fibre group that is of a grea..

Conservation of chemicals, water, and energy through dyebath reuse in polyester fiber dyeing

Dyebath reuse in polyester fiber dyeing was explored. Exhausted hot dyebaths were examined to determine the concentration of residual colorants, replenished, and reused to dye more batches. The residual dye concentration was determined using UV-visible spectrophotometry and HPTLC (high performance thin layer chromatography). The color rep..

Photofading of textile dyes

Many dyes are known to fade when left exposed to sunlight for prolonged periods. Such photofading is a well known technological phenomenon within the textile industry [1]. In particular, certain applications of textile dyes require higher light fastness quality control than others and this has led to an accepted light fastness scale that ..

Smart rinsing: A step change in reactive dye application technology

The rinsing stages of reactive dyeing of cellulosic substrates take up an estimated 80% of the water consumption, 90% of the energy, and 70% of the time of the total process have been neglected over recent years. ITMA 1995 saw the unveiling of a range of machines from manufacturers with “smart” rinsing systems in which fresh lot water i..

Fabric defects emphasised by dyeing and finishing. I (Italian) (Difetti dei tessuti evidenziati dalla tintura e dal finissaggio)

The article presents examples and causes of fabric defects and suggests the most appropriate ways of correcting them. It deals with piece-dyed wool fabrics with a melange effect, wool fabrics with small neps of fibre dyed less intensely than the background, worsted wool fabrics with streaks in the direction of the warp, wool yarns and fab..

Colour Differences and Colorant Formulation.

Instrumental color difference measurements eliminate the differences in color measurements arising from differences in human color vision and viewing conditions. Color difference equations reveal the degree of metamerism of a sample when the illuminant changes and whether a sample is an acceptable match to a target color. An overview of c..

Indirect Gas Heating for Stenters and Hotflues.

Monforts’ Montex 5000 tentering machines and Thermex hot flues feature flue gas heat exchangers in each machine section. Combustion gases from blower burners are distribued into the tube bundles of the flue gas heat exchanger, recollected as they leave the tube bundles, and led out of each section via a conduit. A circulation system guid..

Added Value for Modern Products: Sandwich Technology,

Sandwich laminate fabric manufacturing extrudes a thin themoplastic film from a melt adhesive, plies the film to a substrate, and calenders the fabric with a textile layer. Coatema Coating Machinery’s Verticoater combines impregnation and double sided coating with vertical drying. The Slotcoater hot melt unit provides thin coatings in la..

Polished Knits.

Interest in the mechanical finishing of knit apparel fabrics has increased since the 1990s. Polishing long pile knit fabrics with a pol-rotor machine involves laying the pile fibers in a single direction and shearing the pile to a uniform surface effect. Lafer SpA's Ultrasoft brush sueding machine incorporates a Delta continuous spreading..

Optimising the Finishing Process.

Sperotto Rimar's Nova 220/600 solvent scouring machine processes warp knit elastic fabrics, circular knit elastic and nonelastic fabrics, and fabrics in open width or tubular form. The machine eliminates hard curling of edges during upon width fabric processing and permits lengthwise shrinkage of up to 25 percent for nylon/elastane blend ..