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5690873 |
Polyarylene sulfide melt blowing methods and products
The present invention provides a method of preparing polyarylene sulfide fibers, particularly polyphenylene sulfide fibers, comprising melt blowing a blend of polyarylene sulfide and a polyolefin,...
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5688451 |
Method of forming an absorbable biocompatible suture yarn
A process for producing an absorbable biocompatible medical suture yarn includes the step of spin drawing a bioabsorbable polymer to form suture filaments. A spin finish using a non-aqueous based...
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5688468 |
Process for producing non-woven webs
A process for producing a non-woven polymeric fabric web, such as a spunbond web, having filaments of 0.1 to 5 denier with equivalent production rates. A plurality of continuous polymeric filaments...
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5681513 |
Method for fabricating composite structures using continuous press forming
A method for fabricating composite structures at a low-cost, moderate-to-high production rate. A first embodiment of the method includes employing a continuous press forming fabrication process. A...
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5679299 |
Methods of making self-reinforced composition of amorphous thermoplastics
Self-reinforced composites of amorphous thermoplastic materials such as poly(methylmethacrylate), polycarbonate and polysulfone are made by melt-extruding and simultaneously drawing and cooling the...
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5674437 |
Method of providing luminescence to fibrous materials
A method for providing luminescence to fibrous material is provided. The method includes combining a metal aluminate oxide pigment with a thermoplastic polymer, and then heating, mixing, and...
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5667749 |
Method for the production of fibers and materials having enhanced characteristics
A method and apparatus for forming artificial fibers and a non-woven web therefrom includes generating a substantially continuous fluid stream along a primary axis, at least one extrusion die...
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5667612 |
Personal cleansing implement using knitted tubing and method of construction
A personal cleansing implement comprises a substantially rectangular hydrophobic batt. The batt is a piece of knitted tubing made from extruded linear low density polyethylene monofilaments knitted...
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5667750 |
Process of making a nonwoven web
A melt-extrudable thermoplastic polypropylene composition having a melt flow rate in a range of from about 18 to about 30 g/10 minutes at a temperature of 190° C. and a load of 2.16 kg, a...
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5665300 |
Production of spun-bonded web
An improved process and apparatus are provided for the formation of a spun-bonded fibrous web suitable for service in nonwoven end uses. A melt-processable thermoplastic polymeric material is...
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5665293 |
Method of making spun yarn packages multiple individually separable yarn ends
A generally cylindrical yarn package having multiple yarn ends is formed by converging the multiple yarn ends to form a substantially planar yarn end ribbon having the multiple yarn ends in a...
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5661880 |
Method and apparatus for producing a multifilament yarn by a spin-draw process
A method and apparatus for producing a multifilament yarn by a melt spinning-draw process, and which includes applying additional heat to the melt in the region of the spinneret. The relationship...
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5660908 |
Recyclable automotive headliner and method of manufacture
A recyclable automotive headliner consists 100% of polyethylene terephthalate (PET) material and includes reverse ribs of varying density of PET fibers filled with reinforcements of full density...
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5648041 |
Process and apparatus for collecting fibers blow spun from solvated mesophase pitch
The present invention provides a process and apparatus for collecting relatively straight blow spun fibers in a two dimensional configuration. The process utilizes a venturi to preclude the kinking...
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5645782 |
Process for making poly(trimethylene terephthalate) bulked continuous filaments
Polyester carpets of poly(trimethylene terephthalate) are disclosed which have excellent stain-resistance, texture retention and resistance to crushing. The bulked continuous filament yarn used to...
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5643515 |
Method and apparatus for producing stretched yarns
A method and apparatus for producing stretched yarns. PET yarns composed of a plurality of continuous and substantially fully stretched individual filaments are made by melt spinning and stretching...
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5639408 |
Method and apparatus for forming plastic tube with spiral inlayed exterior design
A one-piece tube multi-pack and its method of manufacture are disclosed. The one-piece tube multi-pack includes an elongated thin-walled tubular element made of transparent flexible plastic...
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5632943 |
Method for manufacturing a diaphragm of a speaker
A method of manufacturing a diaphragm of a speaker includes the steps of: 1. weaving a plurality of fibers to become a fiber sheet; 2. immersing the fiber sheet in resins; 3. spraying or inserting...
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5630972 |
Method of making dispersible compositions and articles
Aqueous-alkali disposable articles are made from films or non-woven webs or composites of films and webs where the film or non-woven web comprises a hydrolytically degradable polymer and preferably...
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5624618 |
Process of making braided composite part
A multi-vane structure for incorporation in an aircraft gas turbine engine has vanes of complex geometry made of braided fibers which are continuous about the cavities defined by the vanes. These...
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5624617 |
Method of manufacture for catheter lumen lubricity
A method of manufacture is disclosed for a PTCA guiding catheter. The catheter includes a lamination of an inner structural polymer tube, a lubricating means disposed on the inside of the inner...
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5624515 |
Method of producing short fibers
A multi-filament yarn is subjected to soft twist of 4 to 9 twistings in every 10 cm in a single direction thereby forming a warp yarn. Weft yarns are passed, at a density of 1 to 3 yarns in every 5...
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5618480 |
Process of making multifilament yarn, monofilament or film of polyethylene naphthalate
Multifilament yarn, monofilament, or film, formed at least substantially of polyethylene naphthalate, has a strength of at least 400 MN/tex and a DSC melting point of at least 292° C., where the...
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5618479 |
Process of making core-sheath filament yarns
In a yarn composed of core-sheath filaments with or without further monocomponent filaments, the core and the sheath of the core-sheath filaments are produced by extruding spinnable polymers, with...
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5618481 |
Process of making multifilament yarns of thermoplastic polymers based on tetrafluoroethylene
A multifilament yarn of a thermoplastic polymer based on tetrafluoroethylene, having high mechanical strength and dimensional stability at high temperatures (200°-250° C.), is prepared by melt...
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5614132 |
Method for manufacturing a mineral fiber product
A method for manufacturing a mineral fiber product includes centrifuging mineral fibers with a spinner, forming a veil of the mineral fibers moving in the direction of the axis of the spinner,...
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5609903 |
Process for forming extruded multi-strand products
A process for forming extruded multi-strand products. The process providing a braiding extruder which includes a first rotatable member, a second rotatable member, a rotatable member driving...
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5601775 |
Process for making an abrasion resistant quasi monofilament
A quasi monofilament having a high strength polyethylene fiber core with an adherent, abrasion resistant polymer sheath is prepared by feeding the core yarn through a crosshead die, while...
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5599488 |
Process of drawing filaments
A process for drawing curtain filament bundles comprises the steps of: a) introducing the filament bundles together with aspirated gas into an injector which is rectangular in horizontal section...
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5582667 |
Method of preparing multiconstituent fibers and nonwoven structures
Multiconstituent fibers prepared from two or more polymers, with at least one of these polymers being randomly dispersed through the fiber, in the form of domains. At least about 40 percent by...
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5582786 |
Method of producing fibre or film
A water-absorbent water-insoluble fibre or film is produced by extruding an aqueous solution of a water-soluble polymer into a gaseous medium to form fibre or film. The extruded fibre or film is...
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5578373 |
Split polyethylene stretched material and process for producing the same
The present invention provides a split polyethylene stretched material having a tensile strength of at least 0.7 GPa when twisted in the range of 50-500 times/m, which material is produced by...
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5567372 |
Method for preparing a nonwoven web containing antimicrobial siloxane quaternary ammonium salts
A method for preparing a nonwoven web having antimicrobial properties which involves melting a melt-extrudable thermoplastic composition, extruding the molten composition through multiple orifices...
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5565158 |
Process for recycling multicomponent mixed polymer wastes
A process of recycling a multicomponent mixed polymer waste material involves the steps of agglomerating the multicomponent mixed polymer waste material and spinning the agglomerate to form yarn,...
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5558825 |
Method and apparatus for producing polyester fiber
This invention relates to a method and apparatus for producing a polyester fiber which cools a plurality of molten polyester fibers from a spinnert 2 to a temperature below a glass transition...
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5552097 |
Method and apparatus for heating a synthetic filament yarn
A method and an apparatus for heating and drawing a synthetic filament yarn, and wherein the yarn receives a film of water by wetting with heated water vapor before entering into a heating chamber...
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5547624 |
Process of making and collecting continuous fibers in the form of a rod-shaped batt
This invention relates to making backwindable rod shaped batts or logs from highly oriented flash-spun continuous fibers. The fibers are conducted from the exit of a spinneret through a tunnel and...
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5540870 |
Structural element formed of a fiber reinforced thermoplastic material and method of manufacture
A structural member of fiber reinforced composite material suitable for secondary processing and a method of processing is described. The structural member before secondary processing is typically...
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5538682 |
Process for producing spunbonded webs
A spunbonded web is produced by melting a thermoplastic polymer to form a melt, spinning the melt downwardly through spinnerets to form filaments, cooling the filaments, drawing the thus cooled...
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5534205 |
Method for preparing polybenzoxazole or polybenzothiazole fibers
In a process for preparing polybenzoxazole or polybenzothiazole filaments by extruding a polybenzoxazole or polybenzothiazole dope, drawing the dope filament across an air gap, and coagulating the...
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5525282 |
Process of making composite fibers and microfibers
A process for making composite fibers includes making composite fibers having at least two different polymers, one of which is water-insoluble and selected from the group consisting of polyester,...
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5518749 |
High-speed extrudate weaving assembly and methods
An assembly (10) is disclosed including a rotor (38) extending into a rotor bore (24) and into a dough chamber (26) of a die housing (16), with the rotor (38) rotating at relatively high speeds in...
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5514312 |
Process for manufacturing a flexible tubular conduit having a jacket made of crosslinked polyethylene
The present invention relates to a flexible tubular conduit with a jacket or tube made of crosslinked polyethylene, specially crosslinked polyethylene, and a method for manufacturing the conduit. A...
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5508775 |
Method and apparatus for finishing pile fabric
To incline piles of plush ribbons in a diagonal direction, the plush ribbons moistened at a predetermined rate are brought into contact with a heating drum in a longitudinal direction of the plush...
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5504963 |
Back scrubber device and method of making same
The invention is a device, and method of making said device, for scrubbing the body, preferably an elongated device for scrubbing a person's back. The scrubber is made from multiple loops of...
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5503920 |
Process for improving parting strength of fiberglass insulation
Fiberglass insulation having improved parting strength is prepared by forming a fiberglass mat, applying an aqueous acid aluminum phosphate binder, curing the binder, and autoclaving the resultant...
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5503783 |
Process of making a spring member
A spring member made of a carbon fibers/carbon composite material in which carbon fibers are dispersed in a matrix of graphite, and a process for producing such a spring member. The process...
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5499911 |
Apparatus for spinning of polyurethane elastic filaments
There is disclosed an apparatus for spinning of polyurethane elastic filaments, which includes an improved means for application of a finishing agent and/or an improved means for false twisting....
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5492580 |
Nonwoven moldable composite and method of manufacture
A method of making a moldable, nonwoven composite material. The method includes blending a mix of first fibers and second thermoplastic fibers. The second fibers have a melting point lower than...
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5487858 |
Process of making self-supporting woven vascular graft
A woven synthetic fabric tubular vascular graft including, a stiffening component in the filling yarn is self supporting without crimping the walls of the graft. The graft is woven from warp ends...
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