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| Number | Title | Issue Date |
| 7981337 | Use of aqueous NaOH/thiourea solution in pilot-scale production of cellulose products The present invention relates to the use of an aqueous sodium hydroxide/thiourea solution, specifically to the use of an aqueous sodium hydroxide/thiourea solution for pilot-scale production of cellulose products, wherein sodium hydroxide constitutes 8.1%-12.0% of t... | 07/19/2011 |
| 7370395 | Heating apparatus and process for drawing polyolefin fibers A heating apparatus and process useful for drawing ultrahigh molecular weight polyolefin fibers, such as polyethylene fibers. The heating apparatus includes a first set of rolls and a plurality of aligned ovens. The apparatus includes a second set of rolls at the ex... | 05/13/2008 |
| 7364681 | Spinning device and method having cooling by blowing The present invention relates to an apparatus for producing continuously molded bodies from a molding material, such as a spinning solution containing cellulose, water and tertiary amine oxide. The apparatus (1) comprises a die plate (3) including extr... | 04/29/2008 |
| 7351338 | Porous membrane of vinylidene fluoride resin and process for producing the same There is provided a porous membrane of vinylidene fluoride resin which has pores of appropriate size and distribution and also excellent mechanical strength represented by tensile strength and elongation at break and is useful as a microfiltration membrane or a sepa... | 04/01/2008 |
| 7326376 | Method and device for controlling the composition of the cellulose containing extrusion solution in the lyocell process A method of regulating the composition of the cellulose-containing extrusion solution in the production of cellulosic molded articles, whereby (a) cellulose is mixed with an aqueous amine oxide solution; (b) the mixture is converted to the extrusion solution by evap... | 02/05/2008 |
| 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 and recycling of the solvent. ... | 10/30/2007 |
| 7270779 | Method and device for producing continuous molded bodies The present invention relates to a method and an apparatus for extruding continuously molded bodies, wherein an extrusion solution, in particular an extrusion solution containing water, cellulose and a tertiary amine oxide, is extruded through an extrusion orifice i... | 09/18/2007 |
| 7250108 | Method for measuring the local hydraulic permeability of a sub-group of hollow fibre of a bundle of hollow fibres A method is provided for measuring the local hydraulic permeability, Lpi, of a sub-group of hollow fibres of a bundle of hollow fibres mounted in a tubular casing. The method comprises a step of placing the casing containing the bundle in a vertical position, the la... | 07/31/2007 |
| 7168232 | Fiber reinforcement material, products made thereform, and method for making the same The present invention provides a synthetic fiber and methods for its use and formation. The present invention may comprise a fiber component that is a twisted bundle comprised of multiple strands of a nonfibrillating monofilament, the degree of twist being greater t... | 01/30/2007 |
| 7147807 | 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 and recycling of the solvent. ... | 12/12/2006 |
| 7140496 | Multilayer microporous membrane A multilayer microporous membrane containing a thermoplastic resin, comprising a coarse structure layer with a higher open pore ratio and a fine structure layer with a lower open pore ratio, wherein said coarse structure layer is present at least in one membrane sur... | 11/28/2006 |
| 7097344 | Homogeneous cellulose solution and high tenacity lyocell multifilament using the same The present invention relates to a method for making highly homogenized cellulose solution, wherein the cellulose solution is obtained by obtaining a solidified N-methylmorphorine-N-oxide (hereinafter, referred to as ‘NMMO’) hydrates which is solidified a liquid... | 08/29/2006 |
| 7083704 | Process for making a composition for conversion to lyocell fiber from an alkaline pulp having low average degree of polymerization values The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low copper number and including cellulose that has a low average degree of polymerization (D.P.) and a narrow molecular weight distribution. Further... | 08/01/2006 |
| 7052775 | Method for producing cellulose shaped bodies with super-absorbent properties A process for producing cellulosic formed materials having high water retention capacity according to the dry-wet extrusion process by producing a solution of 5 to 20 wt.-% of cellulose in a hydrous tertiary amine oxide, extruding the solution, stretching the extrud... | 05/30/2006 |
| 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 extruded through an extrusion duct orifice to obtain a continuously m... | 04/18/2006 |
| 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 solution is extruded through an extrusion-channel opening so as to form a... | 04/11/2006 |
| 7015303 | Polyketone solution A solution of a polyketone as a copolymer of carbon monoxide and one or more olefins, wherein 90 wt % or more of said copolymer comprises carbon monoxide units and olefin units, and a solvent is an aqueous solution of at least one member selected from the group cons... | 03/21/2006 |
| 6979660 | Polyethylene protective yarn High strength polyethylene yarns useful in ballistic-resistant, cut-resistant and other applications, fabrics produced from these yarns and the methods by which the yarns and fabrics are made. An untwisted yarn of the invention comprises a plurality of filaments in ... | 12/27/2005 |
| 6949126 | Production of dyed lyocell garments Garments are constructed from lyocell fabric which has been resinated using a textile resin having just two groups per molecule which can reactively cross-link with cellulose molecules of the lyocell fabric then causticised by application under tension of an aqueous... | 09/27/2005 |
| 6902690 | Method and device for producing cellulosed shaped bodies The invention relates to a method for producing cellulosed shaped bodies. (a) Cellulose and an aqueous aminoxide are mixed, whereby a suspension is produced. (b) A cellulose solution is produced from the suspension, whereby water evaporates. (c) A first property and... | 06/07/2005 |
| 6881361 | Method for producing shaped bodies The invention relates to a method for producing shaped bodies, especially threads or foils, from at least one polymer of the groups consisting of polysaccharide, polysaccharide derivative or polyvinyl alcohol by forming a solution of the polymer that contains an add... | 04/19/2005 |
| 6872311 | Nanofiber filter media The present invention is directed to an air filter medium comprising nanofibers, the filter medium having a thickness of less than 0.25 millimeters, a Figure of Merit of greater than about 0.075, and an efficiency of greater than about 99.9% when capturing aerosol p... | 03/29/2005 |
| 6861023 | Process for making lyocell fiber from sawdust pulp A process for making lyocell fibers including the steps of pulping raw material in a digester to provide an alkaline pulp, wherein the raw material includes sawdust in an amount greater than 0% up to 100%; contacting the alkaline pulp including cellulose and at leas... | 03/01/2005 |
| 6821591 | Seamless tubular film and methods and devices for producing a seamless tubular film materials The present invention provides a seamless tubular film on a cellulose base, being produced by extruding an aqueous cellulose N-methyl-morpholine-N-oxide spinning solution. The maximum degree of roughness Rmax is from greater than 0.1 μm to 0.5 μm and an... | 11/23/2004 |
| 6756001 | Process for making a spun article from cellulose material The invention concerns a coagulating agent for liquid crystal solutions with a base of cellulose substances, characterised in that it contains at least one water soluble additive selected from the group consisting of ammonia, amines of salt of these compounds, the a... | 06/29/2004 |
| 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 modulus of tension of at least 700 cN/dtex, a process for the preparatio... | 04/20/2004 |
| 6706237 | Process for making lyocell fibers from pulp having low average degree of polymerization values The present invention is directed to methods of making lyocell fibers. In particular, the process includes reducing the average degree of polymerization of a pulp to about 200 to 1100 without substantially reducing the hemicellulose content of the pulp, and reducing... | 03/16/2004 |
| 6706224 | Process and device for the production of cellulosic moulded bodies The invention relates to a process for the production of a spunlaid fabric containing solvent-spun cellulosic fibers. The process is characterised in that a solution of cellulose in an aqueous tertiary amine oxide is extruded through a spinneret (1) with orif... | 03/16/2004 |
| 6645409 | Process for the production of cellulosic fibres The invention relates to a process for the production of cellulosic fibers from solutions of cellulose in an aqueous tertiary amine oxide whereby the extruded fibers are led through a precipitating bath and cut and the cut fibers are passed through a seri... | 11/11/2003 |
| 6596033 | Lyocell nonwoven fabric and process for making The invention is lyocell fiber characterized by a pebbled surface as seen at high magnification and having a variable cross section and diameter along and between fibers. The fiber is produced by centrifugal spinning, melt blowing or its spunbonding varia... | 07/22/2003 |
| 6565796 | Method and apparatus for use in manufacture of cellulose casing Disclosed is a method of sizing nonderivatized extruded cellulosic tubes by the use of a mandrel structure that includes a hollow sizing portion having openings which gather gas bubbles that may evolve at the interface between the extruded tube and the si... | 05/20/2003 |
| 6527997 | Process of making cellulose formate fibers of liquid crystal origin A cellulose formate fiber of liquid-crystal origin, having a high elongation at break and having the following characteristics: a) under an optical polarizing microscope, its filaments have a banded structure typical of its liquid-crystal origin; b) it satisfi... | 03/04/2003 |
| 6527987 | Process for producing regenerated cellulosic fibers It is an object of the present invention to overcome the problem of fibrillation which is a drawback found in solvent-spun regenerated cellulosic fibers and to thereby provide high-quality regenerated cellulosic fibers. The regenerated cellulosic fibers a... | 03/04/2003 |
| 6521169 | Process for the production of cellulose shaped bodies, bodies produced by this process and the use thereof Process for the production of cellulose shaped bodies through the precipitation of a cellulose solution containing cellulose dissolved in an amine oxide/water system in a precipitation bath, wherein the solution contains additional cellulose fibers.... | 02/18/2003 |
| 6444161 | Mandrel structure for use in manufacture of cellulose food casing Disclosed is a mandrel structure for extruding a tube composed of a non derivatized cellulose. The mandrel includes a hollow sizing portion having openings which gather gas bubbles that may evolve at the interface between the extruded tube and the sizing ... | 09/03/2002 |
| 6436319 | Method of preparing hollow fiber-type separation membrane from high density polyethylene A method for preparing a hollow fiber-type separation membrane from high density polyethylene is provided, which includes the steps of: melt-spinning a mixture of a high density polyethylene and a diluting agent to produce a phase-separated undrawn hollow... | 08/20/2002 |
| 6280843 | Wholly aromatic polyamide fibers, a sheet comprising same and method of producing the sheet Aromatic polyamide fibers which have a crystalline structure having (1) crystal size (A) in a (110) plane of 7.5 nm, (2) crystal size (B) in a (200) plane of 8.2 nm and (3) a product A×B of 61.50 to 630.00, and exhibit a thermal linear expansion coeffici... | 08/28/2001 |
| 6258304 | Process of making lyocell fibre or film Lyocell fibres contain elongated domains of polyester, polyamide or an olefin copolymer, the domains having an aspect ratio at least 1.5 and being aligned substantially parallel to the axis of the fibre. A process for the preparation of lyocell fibre or f... | 07/10/2001 |
| 6238606 | Process for preparing pellets of saponified ethylene/vinyl acetate copolymer In the method of continuously producing pellets by continuously extruding a saponified ethylene-vinyl acetate (EVOH) solution in a strand form into a coagulation liquid and then cutting the resulting strand, the ratio between the weight X of the coagulati... | 05/29/2001 |
| 6235392 | Lyocell fibers and process for their preparation The invention is lyocell fiber characterized by a pebbled surface as seen at high magnification and having a variable cross section and diameter along and between fibers. The fiber is produced by centrifugal spinning, melt blowing or its espunbonding vari... | 05/22/2001 |
