SPECIALTY CHEMICALS FOR PROCESSING POLYESTER. PART 2.

Carriers, oligomer controllants, and finishing chemicals for use on polyester fibers are discussed. Carriers are special chemicals that promote the uptake of disperse dyes. The compounds commonly used in polyester dyeings are phenolics, chlorinated aromatics, aromatic hydrocarbons, ethers, and aromatic esters. Alkali metal salts will make..

CURRENT TRENDS.

Recent developments in bleaching machinery and dyeing technology are described. Fashion trends towards brighter and pastel colors have increased the importance of bleaching techniques for obtaining whiteness. hydrogen peroxide has emerged as the bleaching chemical of choice because it is more environmentally friendly than chlorine-based b..

DYEING AND PRINTING OF TASAR

Becuase tasar silk differs from mulberry silk in terms of denier, filament length, texture, and color, different dyeing and printing standards are required. Tasar requires a different degumming process and desizing if the fabric is to be printed. Bleaching can be carried out effectively with hydrogen peroxide at a mild alkaline pH, and a ..

REVIEW OF TEXTILE DYEING PROCESS.

Basic principles of batch and continuous dyeing processes aqre described in terms of the equipment used to dye a variety of textiles. The selection of equipment and process depends on the substrate and fiber type, the size of the dye lot, and the quality requirements. Batch dyeing can be divided into three categories depending on whether ..

KNIT FABRIC DYEING -- JET-OVERFLOW PROCESSES

The Uniflow dyeing machine from Then offers increased quality with good reproducibility, reduced operating costs through reduced consumption, and increased production through shorter process times. The machine is capable of using either the Jet or the Overflow process, giving it an extended range of applications in the field of knit fabri..

SOFT-FLOW DYEING MACHINES FROM THIES.

Thies' Soft Stream SV, Ring-soft, and Roto-Stream jet dyeing machines are described. The Soft-Stream SV features a wide range of applications, gentle treatment of fabrics, short fabric circulation times, perfect levelness, and a liquor ratio from 1:8 to 1:20. This machine is economical to operate and has a compact, space-saving design. Ri..

NEW HT OVERFLOW DYEING. MACHINE WITH REVERSE FABRIC PASSAGE

LAIP's Soft Flow 600HT piece dyeing machine with a reverse fabric passage direction has already found wide approval among leading textile companies. Eighteen units ave been delivered since the machine's introduction in February 1990. The machine is versatile enough to dye sensitive materials such as silk, 100 percent polyester microfibers..

NEW SIX-COLOR SPACE DYEING MACHINE FOR CARPET YARNS

The SSD-6 from Superba is a six-color dyeing machine for the continuous dyeing of carpet yarns by the space dyeing process. The machine can be operated as an independent unit or in combination with a steamer or heat-setting machine. The SSD-6 can be used for nylon 6 and nylon 66 carpet yarns in the 1,000 to 5,000 Dtex range. Special squee..

NEW OVERFLOW DYEING MACHINE FOR SILK.

The SDF (silk dyeing flow) atmospheric overflow dyeing machine from mezzera is discussed. The machine was developed for dyeing 100 percent silk and blends of silk and natural or manmade fibers. The SDF eliminates the quality problems associated with conventional rope dyeing machines, including roughened places, hairy fabric surfaces, long..

HT PIECE DYING MACHINE DEVELOPMENT

The Rapidsuau FL is the latest jet overflow dyeing machine in ATYC's Rapidsuau range. The machine features an extended fabrics storage section that increases load capacity by nearly 50 percent. Batch sizes of up to 2,400 kilograms are possible by coupling several machines together.