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5294390 |
Method for rapid spinning of a polybenzazole fiber
Polybenzazole polymer dopes are spun through a spinneret having more than 2 per cm 2 , of orifices in relatively close proximity. The dope filaments formed, then pass through an air gap which has a...
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5292328 |
Polypropylene multifilament warp knitted mesh and its use in surgery
A surgical mesh of warp knit construction is fabricated from a polypropylene multifilament yarn.
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5283023 |
Method of imparting delayed wettability to a nonwoven web
A method of forming a nonwoven web having delayed wettability, in that the web is not wettable by water upon its formation but becomes wettable within from about three hours to about 30 days...
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5277850 |
Process for producing a coil-shaped carbon fiber bundle
The present invention relates to a carbon fiber bundle includes a regular coil-shaped fiber bundle and having excellent stretch characteristic. A process for producing a coil-shaped carbon fiber...
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5277855 |
Process for forming a yarn having at least one electrically conductive filament by simultaneously cospinning conductive and non-conductive filaments
The present invention is directed to a process for forming a yarn having at least one conductive filament wherein the conductive and nonconductive filaments which make up the yarn are...
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5264171 |
Method of making spiral-wound hollow fiber membrane fabric cartridges and modules having flow-directing baffles
This invention provides spiral-wound hollow fiber membrane fabric-containing cartridges and modules for separations and other phase contact applications, in which the cartridges contain baffles...
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5264162 |
Process for manufacturing porous tubes of high permeability made from carbon-carbon composite material, and their application
A process for manufacturing porous tubes made from carbon-carbon composite material by winding over a mandrel a non-woven sheet, made from a carbon fiber precursor, followed by compression and hot...
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5258153 |
Method for the manufacture of stacked or wound type metallized polyethlene naphthalene film capacitors
In a method for the manufacture of stacked or wound type capacitors, made by the stacking and cutting out into unit blocks or by the winding of metallized polyethylene naphthalene films, at least...
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5256353 |
Method of making elastic plastic netting made of oriented strands
A method of making an elastic wrapper netting wherein linear low density polyethylene ribbons are knitted into a Raschel net. The ribbons of the knitted wrapper netting have an orientation of about...
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5246637 |
Method for producing electret filter
A highly efficient, reliable method is provided for producing an electret filter having an excellent collection efficiency. In this method, a film containing a resin material with high molecular...
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5244616 |
Method of making improved polyester filaments, yarns and tows
Air-jet texturing with drawing, especially cold-drawing, or hot-drawing or other heat-treatments of spin-oriented crystalline polyester filaments, and particularly polyester feed yarns, that have...
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5240661 |
Fabrication process for composite swashplate
A method for fabricating a composite swashplate ring utilizing a thermoplastic expandable mandrel which is rigid during braiding, yet softens after resin impregnation to allow expansion in a mold...
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5240660 |
Abrasion resistant polyester yarn and cordage
A method of producing abrasion resistant cordage from polyester yarn requires treating the yarn after drawing with an aqueous overfinish composition that contains an oxidized polyethylene...
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5232645 |
Process for making coiled brake tubing
Process for making coiled brake Tubing for truck/trailer rigs formed of a blend of polyolefin materials.
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5230761 |
Waistband interlining with thin edges and its ultrasonic formation
Waistband interlinings are made by ultrasonically cutting a fabric having warp yarns and fill yarns of a thermoplastics material along lines parallel to the warp threads. An acrylic finish on the...
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5229055 |
Method and apparatus of producing hollow profiles from multilayer starting material
Hollow profile elements are formed by shaping a starting workpiece that consists of multiple layers of a material having a large width-to-thickness ratio, e.g., woven fabrics or laid materials. The...
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5223198 |
Process of making mixed shrinkage yarn
A process of making mixed shrinkage yarn, including drawing, especially cold-drawing, or hot-drawing or other heat-treatments of spin-oriented crystalline polyester filaments, and particularly...
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5223197 |
Process of making mixed filament yarn
A process of making mixed filament yarns, involving drawing, especially cold-drawing, or hot-drawing, or other heat-treatments, of spin-oriented crystalline polyester filaments, and particularly...
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5219503 |
Process of making nylon flat yarns
Flat continuous multifilament nylon apparel yarns suitable for critical dye applications and a process for making such yarns. The process for making the yarns includes spinning nylon polymer with a...
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5217657 |
Method of making carbon-carbon composites
A process for making 2D and 3D carbon-carbon composites having a combined high crystallinity, high strength, high modulus and high thermal and electrical conductivity. High-modulus/high-strength...
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5213722 |
Method of making a separator material for a storage battery
A method for making a separator material which is useful as a separator for storage batteries. The method involves applying a sulfonated surface layer to polyolefin resin fibers which form a woven...
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5213735 |
Process for manufacturing needled spunbondeds
Process for manufacturing needled spunbondeds from thermoplastic fibers wherein, prior to the needling, the as-spun web is thermally sealed at the surfaces and provided with a lubricant.
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5207959 |
Process for obtaining pet yarns with an improved production efficiency
Process for improving the production efficiency of the spinning of an undrawn, preoriented yarn based on polyethylene terephthalate (PET) by the introduction, before the spinning, of 0.03 to 0.1%...
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5207960 |
Method for the manufacture of thin tubes of fluorinated resin, particularly of polytetrafluoroethylene
A process for the manufacture of a thin-walled tube of fluorinated resin, particularly polytetrafluoroethylene, in which a ribbon of fluorinated resin obtained by lubricated extrusion and...
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5202070 |
Method for making composite products having an integral knit matrix
A method of forming a rigid composite varishaped product by knitting an integral fabric piece in the desired shape and impregnating the knitted piece with a selected settable impregnate which is...
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5192476 |
Method for forming a conduit by pre-coating the conduit prior to braiding
A method of forming a hose assembly (10) of the type adapted for carrying fuels and other corrosive fluids. An inner liner (16) of a fluorocarbon material is extruded. The inner liner (16) is then...
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5191697 |
Loudspeaker damper and method of manufacturing the same
There is provided a method of manufacturing a loudspeaker damper having the steps of attaching a conductive material to a damper raw material at the top or bottom surface thereof, the damper raw...
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5176862 |
Process for the manufacture of stretched rope
The stiffness and the tensile strength of a rope containing polymeric filaments manufactured according to the gel spinning process are substantially increased by stretching it. The stretching is...
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5174936 |
Process for preparing yarn component suitable for use in formable sheet structures
A yarn component containing at least one filament is prepared by: selecting at least one partially oriented, undrawn synthetic filament having a birefringence of at least 20×10 -3 and an...
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5173231 |
Process for high strength polyester industrial yarns
Improvements in polyester yarns of high strength from high viscosity polymer, obtained by melt-spinning such high viscosity polymer at high withdrawal speed to provide a novel intermediate...
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5167899 |
Process for melt blowing microfibers of rigid polyurethane having hard segments
Disclosed is a melt-blowing process for producing a fiber of an extrudable polyurethane having a large amount of hard segment, which comprises supplying a polyurethane comprising the reaction...
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5151281 |
Device for continuous manufacture of bent rods with shaped cross sections using an intermediate strip
An apparatus for continuous manufacture of bent rods having a shaped cross section from a reinforced stabilizing material, produced inside a supporting mold wound on a mandrel and containing...
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5145613 |
Process for producing a heat-resistant alumina fiber mat
A heat-resistant alumina fiber mat contains an accumulated mass of alumina staple fibers and continuous alumina filaments. The accumulated mass is sewn with the continuous alumina filaments. A...
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5145622 |
Improvements in process for preparing water-dispersible polyester fiber
Water-dispersible polyester fiber whose water-dispersibility is improved, and precursor filament tow are prepared by an improved process involving treatment of undrawn polyester filaments with a...
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5143669 |
Fiber-reinforced molded racquet frame
A method of making a fiber-reinforced molded racquet frame includes placing at least one core having a tube with at least one layer of woven reinforcing fibers in a mold shaped to define the frame....
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5142782 |
Coated braided hose method and assembly
A method of making a lightweight hose assembly including a step of extruding the inner liner. A nonmetallic material is then braided about the exterior of the liner. The inner liner and braided...
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5139710 |
Shadow boundary process for the continuous radiant cure of composites
A method for the production of fiber reinforced palstic composites, in which a continuously moving array of fibers is impregnated with resin and fast cured as it passes through a shadow boundary...
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5130069 |
Process for producing dyeable hot-bulked polypropylene fibers modified with a copolyamide
Dyeable fibers are formed from polypropylene by blending a major portion of polypropylene with a minor portion of 1) a copolymer of nylon 6,6 and substantially equimolar amounts of hexamethylene...
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5114646 |
Method of increasing the delay period of nonwoven webs having delayed wettability
A method comprising melting a mixture of at least one thermoplastic polyolefin and at least one additive having the general formula, ##STR1## and extruding the resulting melt through a die at a...
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5112545 |
Composite preforms and articles and methods for their manufacture
A multi-dimensional (e.g., 3D braided) preform formed of reinforcement strands or filaments is rigidized by impregnating the preform with a resin solution (e.g., silicone resin solution), curing...
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5112562 |
Method and apparatus for manufacturing nonwoven fabrics
Method and apparatus for manufacturing span bond nonwoven fabrics formed from continuous fibers which are small in fineness and high in strength and manufactured by the steps of spinning for...
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5108675 |
Process for preparing easily dyeable polyethylene terephthalate fiber
Fine polyethylene terephthalate fiber having a monofilament denier of not more than about 4 deniers is spun at a high spinning speed of not less than 7,000 m/min, the polyethylene terephthalate...
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5106552 |
Process of producing a filter element of composite fibers
Polyolefin/polyester composite fibers having a low apparent Young's modulus and a filter element using the composite fibers are produced by subjecting a polyolefin as sheath component and a...
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5101556 |
Method of manufacturing a piston
A method of manufacturing a piston for transferring an output force to a member in responsive to pressurized fluid being communicated to a bore in a housing. The piston has a cylinder body made of...
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5091026 |
Method for continuously vulcanizing a self-molding hose
A method for continuously vulcanizing a self-molding hose by external heating including the steps of first forming continuous strip of self-molding material which includes a heat-shrinkable woven...
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5091130 |
Process for the production of highly filled yarns
A highly filled yarn is formed by melt spinning a thermoplastic fibre-forming polymer containing at least 25% by weight of a particulate filler through a spinneret to form a continuous...
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5084221 |
Process for manufacturing a twisted FRP structure
A twisted FRP structure having sufficient strength and flexibility is produced by providing a rod member disposed centrally and twist a plurality of side strands twisted around the rod member in...
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5078935 |
Method of producing a very soft polyolefin spunbonded nonwoven fabric
The polyolefin spunbonded nonwoven fabric is defined as (A) being formed of continuous polyolefin fibers having a fineness of 0.5 to 3 denier, (B) having basic weight between 30 g/m 2 and 15 g/m 2...
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5076872 |
Process for preparing a flexible composite material
A flexible composite material comprising a core composed of a blend of a thermoplastic resin fiber and a reinforcing fiber, and a flexible sleeve formed of a thermoplastic resin and surrounding the...
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5073322 |
Processing of ethylene terephthalate/hexahydroterephthalate copolymer filaments
Improved fibers of a copolymer of ethylene terephthalate/hexahydroterephthalate containing a high proportion of hexahydroterephthalate are obtained by a 2-stage drawing process, involving...
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