Polyester fiber processing

[...]... shrinkage in these processes It should be emphasized that the ability of PET polyester fiber to accept a permanent set is not influenced by the temperature of prior heat-setting In this respect, PET polyester fibers differ from some other synthetic fibers Steam setting: Pressure steaming is not recommended for the setting of PET polyester fabrics, because of variation between the inside and the outside... extension, strength and functional property polyester is widely used as sewing thread in the garment industries Resiliency: Polyester textile shows good resiliency property It does not crease easily and any undue crease can be recovered easily Dimensional Stability: Polyester fiber is dimensionally stable It could be heat-set at around 200 degree C heat set polyester fiber does not shrink or extended Action... specific gravity 1.38 1.39 1.38 1.38 Moisture regain, % 0.4 0.4 0.4 0.4 258-263 258-263 258-263 258-263 breaking tenacity, N/tex Melting temperature, o C Other Properties of Polyester Fiber Fineness of polyester textile: Fineness of polyester fiber is also controllable X-Sectional shape: Normal cross sectional shape is round but it is also made triangular, elliptical or pentagonal Normally it is white but... chlorite are generally more suitable for color woven goods PET polyester / flax blends may be bleached according to these general principles, but more intense treatment is required PET polyester / Wool Blends: The PET polyester component cannot be bleached with chlorine compounds in the presence of the wool component Chemical bleaching of PET polyester / Wool blends is virtually restricted, therefore,... obtained by reaction of ethylene oxide with water Chemistry of Polyester fiber HOOC COOH + CH3OOC CH3OH Terephthalic Acid COOCH3 Dimethyl Terephthalate CH3OOC COOCH3 + HOCH2CH2OH Ethylene Glycol HOCH2CH2OOC COOCH2CH2OH + CH3OH Bis(2-Hydroxyethyl) Terephthlate Polymerization O O O O C C OCH2CH2O C C Polyester OCH2CH2O n General Properties of Fiber Filament Yarn Property Regular tenacity Staple and tow... the preferred agent, and bleaching is carried out after a fluorescent brightening agent has been applied to the PET polyester component This corrects any yellowing of the wool which may have occurred during the application of the agent to the PET polyester fibre Pre-Setting: Unset PET polyester filament yarn will shrink when allowed to relax in boiling water, commonly by some 7% At 130˚., shrinkage... stabilization of heavy industrial PET polyester fabrics Where stenters could not withstand the high tensions developed in setting This method is also used with fabrics such conjunction with stentering, it is also used to produce the exceptionally uniform finish which is required for PET polyester base fabrics which are to receive a plastic coating Heat-setting Conditions: PET polyester filament fabrics are... some yarn dyed fabrics Properties of the polyester: 1) It is resists wrinkling 2) It is easy to launder 3) It dries quickly 4) It is resistant to stretching and shrinking Uses: Polyester is used to make most forms of clothing like shirts, running shorts, track pants, windbreakers, and lingerie It can also be made into curtains and draperies Care of your polyester garment: 1.Machine-wash your fabric... bleaching agents: It is not damaged by the action of bleaching agents Action of acid and alkali: It is unaffected by the action of acid and alkali Action of organic solvent: Polyester textile is unaffected by organic solvent, hence polyester fiber could be dry-cleaned ... cool iron Polymer Formation: Polyethylene Teraphthalate (PET) is a condensation polymer and is industrially produced by either terephthalic acid or dimethyl terephthalate with ethylene glycol Other polyester fibers of interest to the nonwovens field include: (a) Terephthalic Acid (PTA), produced directly from p-xylene with bromide-controlled oxidation (b) Dimethyl Terephthalate (DMT), made in the early . ability of PET polyester fiber to accept a permanent set is not influenced by the temperature of prior heat-setting. In this respect, PET polyester fibers differ from some other synthetic fibers. Steam. the PET polyester component. This corrects any yellowing of the wool which may have occurred during the application of the agent to the PET polyester fibre. Pre-Setting: Unset PET polyester. woven goods. PET polyester / flax blends may be bleached according to these general principles, but more intense treatment is required. PET polyester / Wool Blends: The PET polyester component