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8361365 |
Process for electroblowing a multiple layered sheet
A process for electroblowing a multiple layered sheet using multiple spinning beams to produce different component webs wherein the sheet doesn't stick to the forming screen and has improved web...
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8361366 |
Process for the preparation of UHMW multi-filament poly(alpha-olefin) yarns
A process for preparing ultra-high molecular weight poly(alpha-olefin) (UHMWPO) multi-filament yarns having improved tensile properties at higher productivity. The process includes drawing a...
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8303874 |
Solution spun fiber process
The invention relates to a process for forming fibers from a spinning solution utilizing a high speed rotary sprayer. The fibers can be collected into a uniform web for selective barrier end uses....
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8147745 |
Process for producing fiber and method for producing catalyst layer
To provide a process whereby an ultrafine fiber of a fluorinated ion exchange resin can be produced easily at low cost, and a method whereby a catalyst layer having a high gas diffusion property...
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8137809 |
Ultra high molecular weight polyethylene multifilament yarns, and process for producing thereof
The invention relates to a gel spun, ultrahigh molecular weight polyethylene (UHMWPE) multifilament yarn characterized in that said yarn comprises individual monofilaments having a coefficient of...
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8114325 |
Process for forming uniformly distributed material
A fluidized mixture is issued from a nozzle comprising a fan jet at the outlet, causing the mixture to spread as it is issued. The issued material is collected on a moving collection surface...
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8104624 |
Preparation of high performance ultra filtration hollow fiber membrane
A multipolymeric mixture is provided that includes a hydrophobic polymer, two different grades of a water-soluble polymer, water as non-solvent and a solvent suitable for all polymers involved. The...
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8105521 |
Aromatic polyamide filament and method of manufacturing the same
Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in a process of preparing wholly aromatic polyamide polymer, a multiple tubular feed...
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8092732 |
Processing method of the natural cellulose fiber with feature for enhancing the capability of antifungi, antibacteria and deodorization
The present invention provides a processing method of the natural cellulose fiber with feature for enhancing the capability of antifungi, antibacteria and deodorization. The procedure is that...
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7998575 |
Low shrinkage, dyeable MPD-I yarn
The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and...
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7998388 |
Rotary process for forming uniform material
A thin, uniform membrane comprising polymeric fibrils or a combination of fibrils and particles, wherein the fibrils have randomly convoluted cross-sections, and a process for making the membrane...
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7846363 |
Process for the preparation of UHMW multi-filament poly(alpha-olefin) yarns
A process for preparing ultra-high molecular weight poly(alpha-olefin) (UHMWPO) multi-filament yarns having improved tensile properties at higher productivity. The process includes drawing a...
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7780889 |
Multistage draw with relaxation step
The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and...
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7771638 |
Rapid plasticization of quenched yarns
The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and...
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7771637 |
High-speed meta-aramid fiber production
The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and...
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7771636 |
Single stage drawing for MPD-I yarn
The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and...
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7736563 |
Full dull polyamide 6 yarn, and a process of preparing for the same
The present invention relates to a full dull polyamide 6 yarn and a process for preparing the same. The yarn of this invention contains 1.5 to 2.5% by weight of titanium dioxide relative to the...
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7713459 |
Cellulose fiber for using as industrial materials
The present invention relates to cellulose fiber containing 500 to 2000 of filaments and having homogeneous physical properties and the multi-filaments according to the present invention is...
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7686987 |
Polycarbonate films prepared by coating methods
A method of film fabrication is taught that uses a coating and drying apparatus to fabricate resin films suitable for optical applications. In particular, polycarbonate films are prepared by...
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7674409 |
Process for making uniform high strength yarns and fibrous sheets
Methods for preparation of high strength yarns having superior yarn-to-yarn uniformity of denier, tenacity and tensile modulus and uniform unidirectional fibrous sheets. Ballistic composites...
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7582240 |
Rotary process for forming uniform material
A thin, uniform membrane comprising polymeric fibrils or a combination of fibrils and particles, wherein the fibrils have randomly convoluted cross-sections, and a process for making the membrane...
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7364792 |
Spun-dyed polyurethaneurea fibres, a process for their production and their use for producing fabrics
Described are elastic polyurethaneurea fibres comprising a cationically modified carbon black as an additive, so that the colour of the fibre is distinctly changed. Also described are a process for...
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7364678 |
Process for making and process for converting polyolefin fibres
The invention relates to a process for making a multi-filament polyethylene yarn via a gel-spinning process, Wherein a spin finish is applied at least once in an amount of 0.1-10 mass % based on...
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7288220 |
Solution spinning of UHMW Poly (alpha-olefin) with recovery and recycling of volatile spinning solvent
A process for spinning high molecular weight poly (alph-olefin) filament, particularly ultrahigh molecular weight polyethylene filament, from solution in a volatile spinning solvent with recovery...
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7179413 |
Flash-spinning process and solution
A process for the preparation of plexifilamentary film-fibril strands of synthetic fiber-forming polymer comprises the steps of generating a spin fluid and flash-spinning the spin fluid to form...
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7160623 |
Melt-processible poly(tetrafluoroethylene)
Melt-processible, thermoplastic poly(tetrafluoroethylene) (PTFE) compositions are disclosed and methods for making and processing same. Additionally, products comprising these compositions are...
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6994538 |
Apparatus and method for molding optical lenses
An apparatus and a method for molding optical lenses are disclosed. The apparatus comprises a first molding shell with a first diameter, a sealing element surrounding the first molding shell, and...
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6830715 |
Method and device for producing elastane threads from recycling material
Method and device for producing elastane threads from spinning solutions using recycled elastane material.
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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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6793840 |
Azeotrope mixtures with perfluorobutylethylene
An azeotropic mixture of perfluorobutylethylene and at least one of the group consisting of bromochloromethane, cyclopentane, cis-1,2 dichloroethylene, trans-1,2 dichloroethylene and...
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6787230 |
Ultrafine inorganic fiber, and a process of preparing for the same
The present invention relates to ultra-fine inorganic fibers and a method of producing the same. The method of producing ultra-fine inorganic fibers comprises the steps of: mixing sol or gel...
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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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6723267 |
Process of making highly oriented polyolefin fiber
The invention relates to a highly oriented polyolefin fiber containing polyolefin with an intrinsic viscosity of at least 5 dl/g, which fiber has a tensile strength of at least 26 cN/dtex and a...
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6638470 |
Flash-spinning process and solution
A process for flash-spinning a web of plexifilamentary film-fibril strands of synthetic fiber-forming polymer and laying down the web to form a nonwoven batt material therefrom is provided. The...
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6533975 |
Process of making polyurethane fiber or film
This invention provides processes for preparing fiber or film comprising a polyurethane and layers delaminated from a lamellar clay, said layers being dispersed in said polyurethane. Fiber and film...
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6468652 |
Elastic polyurethane-urea fiber and method for producing the same
An improved polyurethane-urea elastic fiber is obtained by incorporating a specific urea compound prepared by reacting the following compounds together: (a) a nitrogen-containing compound having...
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6458304 |
Flash spinning process and solutions of polyester
A process for producing plexifilamentary or foam products by flash spinning in selected spin agents a polymer from the group consisting of poly (1,3-propylene terephthalate), poly (1,4-butylene...
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6436323 |
Production of fibre
Staple fiber is produced by extruding a solution of a polymer through a spinneret to form continuous filaments, gathering the continuous filaments to form a tow and continuously cutting the...
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6403712 |
Process for the manufacture of spandex and the spandex made thereby
Dry-spun polyurethane-based spandex ® containing 1-10 weight percent poly(vinylpyrrolidone) and a process of their preparation, are provided.
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6376071 |
Polyurethane fiber containing poly(vinylidene fluoride)
The present invention relates to polyurethane based fiber containing 0.1-25 percent poly(vinylidene fluoride) and a method of making the same.
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6316582 |
Use of an alkoxylated polyamine surfactant as a viscose spin bath additive
The present invention relates to a method of reducing the clogging of nozzles and slits and diminishing the formation of deposits in the spin bath system in the process of making viscose...
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6248273 |
Spinning cell and method for dry spinning spandex
A spinning cell for dry spinning spandex by extruding filaments from a nonuniform array of spinneret capillary groups in a rectangular bar and contacting them with a cross-flow of hot, inert gas is...
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6218460 |
Fibers flash-spun from fully halogenated polymers
A flash-spun material comprised of at least 90% by weight of polymers selected from the groups A, B, and C; wherein group A comprises polymers with a melting point above 280° C. that are comprised ...
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6171537 |
Preparation of poly (urethaneurea) fibers
A process for the preparation of poly(urethaneurea) fibers by reacting a blocked aliphatic diamine with a capped glycol prepolymer, followed by extrusion spinning, is provided.
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6153134 |
Flash spinning process
A spinning process using azeotropic compounds as spin agents having essentially zero ozone depletion potential and that are either non-flammable or of very low flammability.
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6153136 |
Process for manufacturing cellulosic microfibers
Microfibers have been manufactured from dissolved cellulose, from which threads, yarns, and fabrics can be made. These cellulosic microfibers may be used to produce fabrics with the very soft feel...
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6136911 |
Fibers flash-spun from partially fluorinated polymers
A flash-spun material comprised of at least 20% partially fluorinated hydrocarbon polymers in which between 10% and 70% of the total number of hydrogen atoms in each hydrocarbon polymer are...
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6096252 |
Process of making polyurethane fiber
A process for preparing durable dry-spun, polyurethane fiber exhibiting a small angle X-ray scattering pattern that forms a layer line scattering image or an eyebrow-shaped four dot scattering...
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6034008 |
Flash-spun sheet material
This invention relates to improved sheets of flash-spun plexifilamentary film-fibrils useful in fluid microfiltration and sterile packaging. The sheet material suitable for use in microfiltration...
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6004672 |
Fibers flash-spun from blends of polyolefin polymers
This invention is directed to a flash spun plexifilamentary strand material comprising blends of thermoplastic material including polyethylene and polypropylene, the resulting strand has a unique...
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