Abstract: Disclosed is to provide a manufacturing method for fine hollow polyester filaments. The length of a protective delay shroud of the radial outer-flow quenching system used in melt spinning process for manufacturing fine hollow polyester filaments is expressed as (2˜8060×throughput÷filaments square), and the length of quenching air tube is from 15 to 40 centimeters. The velocity of quenching air is between 0.2 m/sec to 0.6 m/sec. For the layout of the spinneret orifices, the diameter difference of outermost layer orifice and the innermost layer orifice is set less than 20 mm; and the distance between the diameter of innermost orifice layout and the diameter of quenching air tube is at least 12 and less than 33 mm. The orifice density of spinneret layout (orifice density) is set as 7˜15 orifices per square centimeter.

Abstract: A manufacturing method for differential denier and differential cross section fiber and fabric is provided, wherein the method comprising melting two polymers having different alkali dissolution rate respectively, blending the two polymers in an adjusted ratio, then spinning the blend from a pack assembly consisting of distributor for producing general split type microfiber and spinnerette with spinning orifice of different shape to produce fiber, which is directly formed into SDY (spin draw yarn) subjecting to a direct spin-draw process, or formed into a flat yarn and draw texture yarn subjecting to draw twisting process and false twisting process or formed into a composite flat yarn and composite draw texture yarn subjecting to composite draw twisting process and composite false twist process; spinning said SDY, flat yarn, draw texture yarn, composite flat yarn or composite draw texture yarn to fabric and subjecting the fabric to alkali treatment to obtain fabric with differential denier and differential cr

Abstract: The present invention relates to a method for decreasing the cyclic oligomer content level in the manufacturing process of polyethylene terephthalate (PET) and in the PET products produced from said process by adding calcium phosphate at least one selected from the group consisting of a Ca3(PO4)2 structure and a Ca5OH(PO4)3 structure, and a carboxy phosphonic acid having a structure (1) as follows: wherein R1, R2, and R3 are alkyls or hydrogen atoms and R is an alkyl. The method of the prevent invention restrains the production of cyclic oligomers in the polyester chips produced and also decreases the cyclic oligomers regenerated in the rear-end melting process stage of the invention.

Abstract: Provide a manufacturing method for polyester yarn excellent in yarn transferring, packaging and loosing with no white powder occurred when weaving, which is heating polyester polymer of inherent viscosity (IV) 0.5˜0.7 and melting point of 245˜265° C. to melt, filter and extruding in constant amount by direct spin drawing of monofilament yarn or combining multi-tow of filaments, then splitting to obtain polyester yarn having high denier in monofilament, characterized in comprising the following steps: a. uniformly spinning said constant amount extruded polyester melt through spinneret orifices to obtain the filament tows, passing said spun filament tows under spinneret to uniformly cooled to solidify in the quenching air tube, wherein said quenching air tube is equipped with chilling water tubular coil to keep the temperature of quenching air at 10˜15° C.; b.

Abstract: The present invention relates to a method for decreasing the cyclic oligomer content in polyester product; during the manufacturing process of polyethylene terephthalate, adding at least one selected from the group consisting of calcium phosphate having Ca3(PO4)2 or Ca5OH(PO4)3 structure and of carboxy phosphonic acid having a structure (1) as follows: 1

Abstract: A copolyester composition of polyethylene terephthalate (PET) is invented to manufacture a bottle embryo having a weight of over 600 grams and a thickness of over 7.

Abstract: Disclosed is to provide a modified polyester filament, which is formed by spinning the polyester resin composed of ethylene terephthalate more than 85 mol % as main component repeating unit, and component A organic sulfonate shown as the formula listed below

Abstract: Provide a manufacturing method for polyester yarn excellent in yarn transferring, packaging and loosing with no white powder occurred when weaving, which is heating polyester polymer of inherent viscosity (IV) 0.5˜0.7 and melting point of 245˜265° C.

Abstract: Methods for manufacturing super micro fibers to produce fibers having dimensions of between 0.003-0.003 denier per filament. The manufacturing methods include the following steps: blending polyamide and polyester compounds; passing the polyamide-polyester mixture through twin-screw extrusion; spinning the mixture and; melting, dissolving and removing the polyester compounds with alkaline solvents.

Abstract: A manufacturing method for elastic fiber having fur-like touch, elastic fiber having fur-like touch made from the same, and fabrics woven by said fiber is provided to improve the defects caused by the conventional wool fiber or lack in the elasticity, wearing comfortability and maintenance of fabric having fur-like touch.

Abstract: This invention discloses a method for manufacturing ultra-thin fiber yarn having elastic characteristics. Ultra-thin fiber Textured Yarn and thermoplastic fiber are concurrently fed into a compression air jet system to produce elastic ultra-thin fibers. The two materials are made into a novel yarn with elastic function using the process of this invention, which is simpler as compared with other traditional processes associated with manufacturing elastic complex yarn. The process of this invention is capable of manufacturing elastic complex yarns with excellent size stability, capable of being easily woven, suitable for the textile and slopwork industries, and capable of producing textiles with good elasticity and high degree of comfort.

Abstract: This invention discloses a fiber filament having ultraviolet ray hiding effect and fabric manufactured from said filament. The ultraviolet ray hiding effect of this invention is obtained by adding inorganic titanium dioxide particles having average diameter of less than 100 nm and constituting preferably less than 1 weight % of the total fiber. When fiber filaments of this invention are used in fabric production they constitute preferably over 50% weight of the fabric. thereby producing a fabric with opening rate preferably in excess of 0.7% but preferably less than 25%. The Ultraviolet Protective Factor (UPF) of said fabric is preferably over 40%.

Abstract: This invention discloses a novel, polyester-resin composition containing CaCO3 having inter-bottle friction reduction properties used to manufacture polyester bottles. The polyester resin composition contains preferably between 20-150 ppm CaCO3, which has a reflective index or refrangibility of 1.65, and particle grain size of preferably between 0.5 and 5 micrometers. The polyester/CaCO3 composition of this invention when used to manufacture polyester bottles reduces surface friction between polyester bottles during stacking, manufacturing transportation and commercial transportation while preserving acceptable commercial bottle transparency. The polyester-resin composition of this invention is first made into parison and then blown molded into polyester bottles of desired shapes.

Abstract: This invention discloses a novel polyester composition having ultraviolet light penetration reduction characteristics use to manufacture polyester bottles. The polyester composition of this invention results from mixing preferably 10-1000 ppm of azimido-benzene ultraviolet absorbent with preferably 0.01 to 2 mol % of 2,6 naphthalene dicarboxylate copolyester and pre-polymerized polyester of preferably over 98 mol %. Using precise concentration and mole ratios when forming the polyester composition of this invention is critical for reducing ultraviolet light penetration, and for keeping manufactured polyester bottles haze values to commercial acceptable levels.

Abstract: To a copolyester reacted essentially by terephthalic acid components and ethylene glycol units, adding 1% to 15 weight % of specific diol unit selected from the group consisting of at least one of 2-butyl-2-ethyl-1,3-propanediol, 3-methyl-1,5-pentanediol, 2,4-diethyl-1,5-pentanediol and hydroxypivalyl hydroxypivalate; or adding 0 to 1.0 mole % of mulfunctional group components consisting of at least one or more of trimellitic acid, trimellitic anhydride and trimethylol propane; and adding 0.01 to 0.5 weight % of compound represented by the following formula: can improve the color hue of the copolyester, and increase the reaction rate of the copolyester subjecting to solid phase polymerization, therefore improve the color hue of the shaped articles produced therefrom; furthermore, reduce the decline degree of the intrinsic viscosity after melt processing.

Abstract: The present invention relates to an air textured yarn with elastic character, of which the purpose is to eliminate the shortcoming of making one comfortless while wearing clothes made of conventional air textured yarn by its lack of elasticity; the present invention is characterized in: the inner core yarn, which is made from the heat plastic fiber with self-curling elastic character, and the outer enclosing yarn, which is made from an appropriate heat plastic fiber in accordance with the function need of various fabric, are air textured processed to manufacture a high class yarn with elastic character, which is of industrial applicability.

Abstract: A manufacturing method of polyester fiber having improved light fastness is provided, which comprises copolymerizing dicarboxylic acid, diol component and the ester forming monomer into a copolyester, wherein said ester forming monomer is present in an amount of 0.05 mole % above based upon the total dicarboxylic acid components and is represented by the following formula (1) R2OOC—R1—COOR3 (wherein R1 is a naphthalene ring, R2 and R3 are selected from the alkyl group having one to four hydrogen atoms or carbon atoms, and R2 is independent from R3, it can be the same or different with R3; the position of substitute group for the naphthalene ring on the ester forming monomer can be: -2,3-, -2,5-, -2,6-, -2,7-, -1,2-, -1,3-, -1,4-, -1,5-, -1,6-, -1,7-, -1,8-), subjecting the formed copolyester component to spin-draw process to obtain fiber which possess excellent light fastness after dyeing.

Abstract: A manufacturing method for differential denier and differential cross section fiber and fabric is provided, wherein the method comprising melting two polymers having different alkali dissolution rate respectively, blending the two polymers in an adjusted ratio, then spinning the blend from a pack assembly consisting of distributor for producing general split type microfiber and spinnerette with spinning orifice of different shape to produce fiber, which is directly formed into SDY (spin draw yarn) subjecting to a direct spin-draw process, or formed into a flat yam and draw texture yam subjecting to draw twisting process and false twisting process or formed into a composite flat yam and composite draw texture yam subjecting to composite draw twisting process and composite false twist process; spinning said SDY, flat yam, draw texture yarn, composite flat yarn or composite draw texture yam to fabric and subjecting the fabric to alkali treatment to obtain fabric with differential denier and differential cross se

Abstract: Polyester bottles having reduced bottle-to-bottle friction and an absence of visible haze are manufactured from a polyester polymer containing an effective amount of uniformly dispersed barium sulfate as a friction-reducing additive. Preferably, the barium sulfate is present in the polyester composition in the range of from about 0.001 wt. % to about 0.1 wt. %, and has an average particle size of from 0.1 micron to 2.0 microns. The polymer may be first formed into a preform that is subsequently blown into the desired bottle configuration.

Abstract: To a copolyester reacted essentially by terephthalic acid components and ethylene glycol units, adding 1% to 15 weight % of specific diol unit selected from the group consisting of at least one of 2-butyl-2-ethyl-1,3-propanediol, 3-methyl-1,5-pentanediol, 2,4-diethyl-1,5-pentanediol and hydroxypivalyl hydroxypivalate; or adding 0 to 1.0 mole % of mulfunctional group components consisting of at least one or more of trimellitic acid, trimellitic anhydride and trimethylol propane; and adding 0.01 to 0.