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Staple fibre spinning

The total PET world production capacity amounted to 30 megatonnes per year (Mt/y) in the year 2000. This total production includes 8.5Mt/y of packaging resins, comprising 93 % of bottle-grade PET and 7 % of film-grade PET. The staple fibre and textile filament capacities have been 9.1 Mt/y and 11.1 Mt/y, respectively, while the industrial yarn capacity has been 1.2 Mt/y. Typical plant capacities are 240-600 t/d for bottle resin production, 100-200 t/d for staple fibres and 100-300 t/d for filament-spinning textile grades. Batch plants for the production of industrial yams have typical capacities of 20-40 t/d [2],... [Pg.36]

Several yam manufacturing methods exist in the textile industry. The characteristics of the yam that is used in constmcting a fabric highly influences the mechanical properties of the fabric and similarly, the yam characteristics are strongly dependent upon the fibre characteristics and the yam stmcture. The yam can be formed by using either staple fibres or continuous filaments. Several spinning systems exist for processing staple fibre yams, each of which has a different structure and exhibits different properties. Similarly, continuous filament yams can be manufactured as either monofilaments or multifilaments, with or without twist imparted into them. [Pg.207]

Ring spinning is a long established technique used for manufacturing yams from staple fibres such as cotton, flax, wool, etc. The ring spinning system is the most flexible system, and is the most dominant method of yam production when using staple fibres. Several literatures describe its operation and process control. ... [Pg.207]

The ring spinning system involves three basic processes to manufacture a yam from staple fibres. They are ... [Pg.207]

The conventional ring spinning system can be used only with a staple fibre. By slightly modifying the conventional system, it can be used to manufacture hybrid yams, such as core spun yams. - ... [Pg.207]

Staple fibre aramid yams are produced by reducing a continuous multifilament yam to a bundle of staple fibres by means of steetch breaking and then spinning them into a yam using the ring spinning system. [Pg.214]

Thai Polyester Co. Ltd 180,000 Polyester resins, polyester chip, draw textured yarn (DTY), polyester staple fibre (PSF), spin draw yarn (SDY), partially oriented yarn (POY), dope dyed yarn, mono filament http //www. thaipolyester.com/... [Pg.52]

Figure 10.8 Flow diagram of the spinning of staple fibres... Figure 10.8 Flow diagram of the spinning of staple fibres...
Spinning chips Staple fibres Filament yams... [Pg.171]

At this point, a distinction has to be made between staple fibres and filament yam. Staple fibres are cut into short pieces after the spinning bath. These short fibres, which are each approximately 4 cm long, are spun into textile yams or processed into non-woven products later on. In contrast, filament yams are spun into endless fibres which can be used immediately. Viscose products for textile usage with certain improved product characteristics are called modal fibres . [Pg.174]

After separating the natural component from the blend, the remaining polyester may be garnered to obtain staple fibre products, for the manufacture of nonwoven products, or may be recycled in the melt spinning method. Formation of filament or films occurs without problems when the product of degradation is used as an addition to the standard polyester material. ... [Pg.133]

The traditional method of determining the spin-finish on fibres, be it polyester (PET) staple fibres or UHMWPE (Dyneema) fibres, is by Soxhlet extraction. Products with concentrations of 0.1% can be easily investigated by LR-NMR [218]. LR-NMR in spin-echo sequence has been used as an alternative to extraction methods for fast spin-finish determinations where the concentration of oil on the yarn is the only desired information [219]. In this procedure the signal of polymer protons and adsorbed water molecules decays during 70-100 /zs after excitation, while the remaining signal is due to the oily spin-finish. Depending on proper calibration and method adjustment an accuracy of 0.02% absolute at a spin-finish level of 0.3-0.8% can be reached. [Pg.713]

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