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7344668 |
Process for drawing gel-spun polyethylene yarns
A process for drawing essentially diluent-free gel-spun polyethylene multi-filament yarns in a forced convection air oven and the drawn yarns produced thereby, The process conditions of draw ratio,...
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7270777 |
Method and apparatus for producing a low-shrinking smooth yarn
A method and apparatus for producing a high-strength and low-shrinkage synthetic flat yarn. After melt spinning, the filaments are combined to a yarn and drawn. Subsequently, the yarn is compressed...
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7258758 |
Strong high loft low density nonwoven webs and laminates thereof
High loft, low density nonwoven webs suitable for use in a variety of applications requiring strong fabric layers are produced by forming substantially continuous, spunbond, crimped, bicomponent...
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7128863 |
Heat-shrinkable polyester film having excellent crystallinity
Disclosed herein is a heat-shrinkable co-polyester film having terephthalic acid and ethylene glycol as main components and containing 1,4-cyclohexanedimethanol at the amount of 3–40 mol %. The...
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7108818 |
Dimensionally stable polyester yarn for high tenacity treated cords
A spun polyester fiber, a drawn polyester yarn, and methods for making them. Polyethylene terephthalate yarn is prepared by extruding a molten melt-spinnable polyethylene terephthalate having an...
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7090792 |
Method of selectively shaping hollow fibers of heat exchange catheter
A group of multiple hollow fibers may be shaped to introduce angular divergence among the fibers, or to introduce a selected longitudinal oscillation into the fibers. In one shaping technique, the...
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7070723 |
Method for spin-drawing of melt-spun yarns
A method is provided for simultaneous spin-drawing of continuous yarns consisting of one or more filaments, comprising the steps in which a melt of a thermoplastic material is fed to a spinning...
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7056461 |
Process of making polyester multifilament yarn
A method of producing a polyethylene terephthalate-based polyester fiber includes spinning polyethylene terephthalate based polyester to produce an undrawn yarn with an intrinsic viscosity of 0.83...
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7033530 |
Process for preparing poly(trimethylene terephthalate) bicomponent fibers
A side-by-side or eccentric sheath-core bicomponent fiber wherein each component comprises a different poly(trimethylene terephthalate) composition and wherein at least one of the compositions...
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7029622 |
Method for extruding a continuous molded body
The present invention relates to a method for producing a continuously molded body from an extrusion solution preferably containing water, cellulose and a tertiary amine. The extrusion solution is...
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7025926 |
Method for extruding a continuous shaped body
The present invention relates to a method of producing a continuous molding making use of an extrusion solution containing preferably water, cellulose and a tertiary amine oxide. The extrusion...
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7025919 |
Syndiotactic polypropylene fibers
A process for the production of partially oriented polypropylene fibers from syndiotactic polypropylene. Syndiotactic polypropylene is heated to a molten state and extruded to form a fiber preform....
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7022280 |
Process of making a flat yarn from polyoxymethylene film
A flat yarn of a high strength and a high modulus of elasticity, being excellent in solvent resistance, thermal stability and resistance to bending fatigue is provided. The flat yarn comprises...
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7022273 |
Process for making stable polytrimethylene terephthalate packages
A process for the production and for the winding of one polyester yarn, preferably multi-filament yarn, which comprises at least about 85 weight %, in relation to the total weight of the polyester...
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7001556 |
Nanotube/matrix composites and methods of production and use
A nanotube/matrix composite mixture, and a method of producing it, which can be used to form a composite material such as a drawn fiber having an increased strength over a drawn fiber formed from...
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6984350 |
Method of and apparatus for manufacturing a web having filaments aligned in a transverse direction
An apparatus for manufacturing a transversely aligned web has a spinning device provided with a plurality of nozzles for extruding molten polymer as filaments, and a conveyor on which the filaments...
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6967057 |
Poly(trimethylene dicarboxylate) fibers, their manufacture and use
A process for preparing poly(trimethylene terephthalate) fibers including (a) providing a poly(trimethylene terephthalate) composition comprising about 0.05 to about 10 weight % ionomer and (b)...
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6923925 |
Process of making poly (trimethylene dicarboxylate) fibers
A process for preparing poly(trimethylene dicarboxylate) multifilament yarns and monofilaments. One process for preparing poly(trimethylene dicarboxylate) multifilament yarns includes (a) providing...
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6921803 |
Poly(trimethylene terephthalate) fibers, their manufacture and use
A process for preparing poly(trimethylene terephthalate) fibers comprising (a) providing a poly(trimethylene terephthalate) composition comprising about 0.05 to about 5 mole % tetramethylene...
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6921504 |
Process of making flame retarding polypropylene fiber
A method for producing a flame retarding polypropylene fiber having both good flame retardancy and good fiber strength, and which generates no toxic gas, includes mixing 0.4% by wt. or more of a...
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6918750 |
Arrangement for the continuous production of a filament nonwoven fibrous web
A spun-bond web-making apparatus has the cooling passage below the spinneret provided with a plurality of air chamber sections which are supplied with air at different temperatures, the cooling...
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6911174 |
Process of making multicomponent fiber incorporating thermoplastic and thermoset polymers
The present invention provides a multicomponent fiber containing at least two polymer components arranged in distinct zones or segments across the cross-section of the fiber wherein at least one...
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6908579 |
Process for making a yarn having a spin finish
A spin finish which enhances yarn processability and contributes to improved yarn performance. The spin finish is advantageous when compared with conventional spin finishes applied to industrial...
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6899836 |
Process of making polyamide filaments
The present invention relates to methods for making polyamide filaments, such as nylon 6,6, having high tensile strength. The invention also relates to yarns and other articles formed from such...
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6887423 |
Process for making a stretchable nonwoven web
A process for preparing nonwoven webs including multiple component continuous filaments having high levels of three-dimensional helical crimp utilizing draw rolls to provide a high degree of...
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6887414 |
Method for manufacturing polyester fibers
Method for manufacturing polyester fibers comprising melt-extruding a polymer without increasing an intrinsic viscosity of the polymer during spinning to minimize a reduction of the intrinsic...
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6887410 |
Parallel spinning process involving the intermingling of threads between galettes and a corresponding spinning installation therefor
A parallel spinning process, in particular for filaments, e.g. for textile or industrial applications, made from polymers such as, for example, PET or PA, in each case having a thread interlacing...
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6881375 |
Method of forming a 3-dimensional fiber into a web
A method includes the steps of co-extruding a first component and a second component. The first component has a recovery percentage R 1 and the second component has a recovery percentage R 2 ,...
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6878327 |
Process of making polypropylene fibers
A method for the production of polypropylene fibers from a propylene polymer including isotactic polypropylene produced by the polymerization of propylene in the presence of an isospecific...
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6878326 |
Process for preparing industrial polyester multifilament yarn
Process for preparing an industrial polyester multifilament yarn with high modulus and low shrinkage, in which polyethylene terephthalate polyester is wound at 2000 m/min or more to produce undrawn...
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6872352 |
Process of making web or fiberfill from polytrimethylene terephthalate staple fibers
The invention relates to webs or batts including polytrimethylene terephthalate crimped staple fibers and fiberfill products comprising such webs and batts, as well as the processes of making the...
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6858551 |
Ferroelectric fibers and applications therefor
A fiber which includes a thermoplastic polymer and particles of a ferroelectric material dispersed therein. The thermoplastic polymer may be, for example, a polyolefin, such as polypropylene or...
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6852411 |
Polyester fibers for rubber reinforcement and dipped cords using same
A polyester fiber containing polyethylene terephthalate at 90 mol % or higher of a whole repeating unit in a molecular chain thereof, the fiber having an intrinsic viscosity (IV) of 0.85 dl/g or...
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6838043 |
Method for the production of a synthetic leather
A synthetic leather made of a nonwoven fabric impregnated and/or coated with a polymer, with a surface weight of 100 to 500 g/m 2 , and a tensile strength greater than 300 N/5 cm in the lengthwise...
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6835339 |
Process for preparing poly(trimethylene terephthalate) tetrachannel cross-section staple fiber
Poly(trimethylene terephthalate) tetrachannel cross-section staple fibers, as well as yarns, fiberfill webs, batts and products, and fabrics made therewith. Also, the process of making such staple...
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6824721 |
Polypropylene fibers
Process for the production of fibers formed from an ethylene-propylene copolymer characterized as a random copolymer of ethylene and isotactic polypropylene having a random ethylene content within...
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6811716 |
Polyolefin fibers and method for the production thereof
A method for producing hydrophobic polyolefin-containing fibers or filaments, in particular cardable staple fibers, using spin finishes applied after spinning and stretching, that comprise at least...
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6803013 |
Process of making a meltblown web
The present invention relates to an apparatus and method for forming meltblown material with a die assembly. The die may further include a die tip and a heating element positioned relative to the...
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6803003 |
Compositions and methods for preparing multiple-component composite materials
Methods for preparing fibrous monolith composite materials include continuously extruding cell and boundary material compositions. A filament is formed from a cell material composition and passed...
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6803000 |
Process of making yarn from two types of polyester
A soft stretch yarn produced by spinning yarn of conjugate fibers including two types of polyester in which one component is PTT at a take-up velocity of at least 1200 m/min, drawing at a drawing...
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6780361 |
Process of making polymer articles
A method including forming a pseudo-gel of a semi-crystalline polymer material and a solvent. The pseudo-gel is shaped into a first form and stretched. A portion of the solvent is removed to create...
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6780358 |
Manufacturing method for polyester yarn excellent in yarn transferring, packaging and loosing with no white powder occurred when weaving and polyester yarn made from the same
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...
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6776943 |
Methods for making morphologically stable bulked continuous filaments
BCF yarn is melt-spun, drawn and textured to provide morphologically stable BCF yarns. The yarn texturizing includes a relatively low efficiency fluid jet texturizer, that is a fluid jet texturizer...
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6770364 |
Artificial hair and method for production thereof
The present invention provides synthetic hair comprising fiber of 30 to 100 decitex, comprising an acrylic copolymer obtained by copolymerizing acrylonitrile, vinylidene chloride and a vinyl...
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6767498 |
Process of making microfilaments
Thermally divisible multicomponent fibers ( 4 ) having at least a first component including an elastomeric polymer ( 6 ) and at least a second component including a non-elastomeric polymer ( 8 )....
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6764623 |
Process of making polyester filamentary yarn for tire cords
Polyester multi-filamentary yarn, useful as tire reinforcement, is produced by melting polyester resin at 290° C. or below including at least 90 mol % of polyethylene terephthalate with intrinsic...
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6763559 |
Cold drawing process of polymeric yarns suitable for use in implantable medical devices
The present invention provides for a method of cold drawing polymeric yarns suitable for use in implantable medical devices, such as vascular grafts. The method of the present invention produces...
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6756000 |
Process of making multifilament yarn
The present invention is directed to processes for the manufacture of multifilament yarn, including the steps of extruding multifilaments of a polymer containing at least mole 85 percent L-lactide...
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6752945 |
Process for making poly(trimethylene terephthalate) staple fibers
A process of making polytrimethylene terephthalate staple fibers, including (a) providing polytrimethylene terephthalate, (b) melt spinning the melted polytrimethylene terephthalate at a...
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6743505 |
Bioabsorbable multifilament yarn and methods of manufacture
The present invention relates to a process of forming bioabsorbable, multifilament yarn from Lactide-rich copolymers, including the steps of extruding and spinning a Lactide-rich copolymer to form...
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