Polyester staple fibre

Nanai S Y, Problems occuring in manufacture of polyester staple fibre . Journal of the Textile Association, 2001, 62, 49-52. 

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/... 

The growth of recycled polyester (R-PET) fibre is already an established process in a wide range of applications and is likely to grow even further. For example, Wellman International (part of Indorama Ventures Public Company Limited) has been at the forefront of this movement. Their new Eco-core polyester staple fibre offers a guaranteed, traceable, sustainable raw material content. This validation of eco-credentials is vital for the future. Fibres that are being offered as environmental solutions need to have clear traceability, similar to that of the successful and widely used forest products, Forestry Stewardship Council (FSC) systems. 

The statistical analysis method of discriminant analysis [342] has been combined with NIRA to identify dissimilar textile products. Most textile fibres, yarns, and fabrics have chemical structures which yield complex NIR spectra, and as such these species normally require three or more wavelengths to classify the material. Discriminant analysis is simple to use, rapid, and does not require extensive, time-consuming sample preparation and analysis. Polyester staple fibres of different tenacity levels have different fabric dyeing properties. NIRA method with discriminant analysis successfully identifies and classifies the polyester staple samples by tenacity level and thus provides a quick technique for identification of polyester fibre anticipating quality problems [315]. Mitchell et al [343]... 

The company, an affiliate of Sinopec, is one of the key petrochemical producers in China. It has 25 530 employees and produces gasoline, kerosene, jet fuel, diesel oil, solvents, heavy oil, liquefied petroleum gas, bitumen, benzene, heavy aromatics, ethylene, maleic anhydride, formaldehyde and isobutene. It also produces polyvinyl alcohol, PE, PP, polyester, polyester chips, polyester staple fibre, coarse denier staple fibre and a wide range of other polyester fibres. 

Yueyang Petrochemical General Works, with 16 500 employees, manufactures PP, PS, epoxy resin, polyester staple fibre, nylon-66 and many other petrochemical products. The company is the largest epoxy resin producer in China with annual capacity of 25 000 tonnes. It is a major PBT producer in China and also produces PET resins with capacity of 150 000 tonnes annually. 

Established in 2000, Jiangnan Chemical Fiber Co produces regenerated polyester staple fibre, with an annual production capacity of 10 000+ tonnes. The company s products range from 3-20 den (denier), cut length 32 mm to 76 mm, hollow/solid, siliconized/non siliconized for the textile market, principally in Western Europe. 

Polyester/long-staple fibres are used in the linen industry, where yams may be of either the stretch broken or unbroken type, but more commonly of the latter. The linen component of the blend may be of bleached or unbleached fibre and yams spun from unbleached fibre may be bleached before weaving. Most fabrics in this blend are woven on sized (singles) warps. Unmodified warp sizes are removed by enzyme treatment and non-cellulosic matter is removed by an alkaline scour. 

Pioneer newly acquired seed business specialising in corn and soya Polyesters staple and filament fibres for clothing, bedding and insulation polyester films for films and packaging resins for plastic containers Specialty Fibres stretch clothing based on Lycra non-woven products advanced fibres ... 

As stated above, conventional synthetic fibres may be rendered inherently flame retardant during production by either incorporation of a flame retardant additive in the polymer melt or solution prior to extrusion or by copolymeric modification before, during, or immediately after processing into filaments or staple fibres. Major problems of compatibility, especially at the high tanperatures used to extrude melt-extruded fibres like polyamide, polyester, and polypropylene and in reactive polymer solutions such as viscose dope and acrylic solutions, have ensured that only a few such fibres are commercially available. A major problem in developing successful inherently flame retardant fibres based on conventional fibre chemistries is that any modification, if present at a concentration much above 10wt% (whether as additive or comonomer), may seriously reduce tensile properties as well as the other desirable textile properties of dyeability, lustre and appearance, and handle, to mention but a few. 

The development and use of Thinsulate (3 M), claimed to be based on either a polyester or polypropylene microfibre (diameter -15 pm), has become well established during the last 30 years as an effective insulative fibre, often in blends, such as the polypropylene microfibre combined with polyester staple, which has undergone extensive tests both in the laboratory and in the field. Examples of the latter include use by postmen, ski centres, and survival posts in the northern USA and in underwear for US Navy divers. Excellent results have also been recorded on a fairly recent British winter expedition to Everest. ... 

As some reverse air filters also employ shake or vibration mechanisms, it is not uncommon to find the same fabric in both types of filter. This notwithstanding, conventional reverse air filter sleeves are most likely to feature multifllament yarns in the warp combined with staple fibre yams in the weft. On this occasion the twill weave will be replaced by a 5- or 6-shaft warp satin construction, which is designed to facilitate superior dust release from the smooth multifilament warp yarns during the less aggressive cleaning phase. Particle capture will be further enhanced if the fabric is subjected to a raising or napping process on the reverse side. A typical polyester construction, as may be found in a reverse air filter, is also shown in Table 7.3 for comparison with the previous construction. 

In 2007 Seim et al. presented a new flexible light diffuser based on embroidered optical fibres [12,15]. The latter was composed of a dense woven stmcture (100% polyester multifilament with a textile finish, a weight of 50g/m and a density of 29 threads/cm in warp and weft) in which plastic optical fibres (diameter of 175 pm) were fixed with a 100% polyester twisted staple fibre yam. The authors specified that the fibres form an average of 28 random loops per squared centimetre (loop diameter of about several hundreds of micrometres) and that a minimum stitch-to-stitch distance of 1 mm was achieved. The whole flexible diffuser is about 2 mm height and 11 cm of active area a picture of it is presented in Fig. 4.13. 

In recent history in Europe, textile viscose filament end-uses are receiving increased competition (resulting in phasing out of capacity) by cheaper competitive yams based on polyester and polyamide, whereas viscose staple fibre and viscose tyre cord keep a strong position. 

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. ... 

Alcantara was invented by the Toray Group in 1970. It is based on islands in the sea bicomponent fibres of around 60% polyester and 40% polyurethane (PU), which are then cut into staple fibres and have the sea components dissolved out, before being needle-punched and dyed. 

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. 

Utilizing the properties of copper, two durable platform technologies woe developed [1,13] the first one plates cotton fibres with copper oxide (Fig 1, left panel) and the second one impregnates polyester, polypropylene, polyethylene, polyur hane, polyolefin or nylon fibres with copper oxide (Fig 1, ri t panel). The fibres can be cut into short staple or produced in filament form and texturized, if so desired. The product yielded is a fibre that can be introduced at the blendii stage of yam production or directly into a woven or knit product so that no manufacturing processes are changed. Woven and non-woven fabrics can be produced. 

The dough moulding compound consists of an unsaturated polyester resin system mixed with Norwegian talc (Dolomite) and glass fibre of short staple-length (3-12 mm). The resin system has been specially developed for this purpose, as already mentioned. The mixing process itself is in two stages. 

The high crimp Tencel HS260 grades are supplied in a form that is very similar to that of polyester or polypropylene staple, so blending with these fibre types is very efficient. However, lyocell is also available in a natural... 

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