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| Number | Title | Issue Date |
| 7300618 | Process and apparatus for the production of blister packs Process for the production of plastic blister packs, the top portion of which (PVAL) is subjected to thermal treatment in a furnace, and the apparatus for producing it is of the horizontal type. ... | 11/27/2007 |
| 7267909 | Battery separators containing reactive functional groups A battery separator having a thermal shutdown mechanism and exhibiting excellent mechanical properties and low electrical resistance includes a water-scavenging and/or acid-scavenging material having reactive functional groups that chemically react with water or aci... | 09/11/2007 |
| 6858057 | Filter media A filter media comprising a synthetic microfiber polymer fine fiber web wherein the diameter of the fibers is between about 0.8 to about 1.5 microns. The filter media is acceptable for use in ASHRAE applications. Constructions with a low DP backing, support or prefi... | 02/22/2005 |
| 6793854 | Method and apparatus for making plastic film, and plastic film A method and an apparatus for making a plastic film, and to a plastic film wherein the method includes extruding a film from plastic material by an extruder and orientating the film after extrusion. Material is mixed into the plastic so that when the plastic film is... | 09/21/2004 |
| RE38583 | Process for the production of cellulosic moulded bodies The invention relates to a process for the manufacture of cellulosic flat films and cellulosic membranes in the form of flat membranes whereby a solution of cellulose in an aqueous tertiary amine oxide is moulded in film form using an extrusion nozzle which has an o... | 09/14/2004 |
| 6660211 | Methods of making biodegradable films having enhanced ductility and breathability The present invention is directed to methods of making biodegradable films and biodegradable precursor films having enhanced breathability and ductility. The method includes blending a water soluble polymer and a biodegradable polymer to form a blended po... | 12/09/2003 |
| 6569987 | Process for producing meta-aromatic polyamide fiber To produce meta aramid filaments having a good quality from a polymer solution of a meta aramid produced by a solution polymerization method, with high efficiency, (1) a meta aramid is prepared by polymerization-reacting a aromatic meta-diamine with a aro... | 05/27/2003 |
| 6566012 | Polyolefin microporous film and method for preparing the same It is an object of the present invention to provide a microporous polyolefin membrane, high in pin puncture strength, adequate in pore diameter and high in porosity, comprising (A) an ultra-high-molecular-weight polyolefin having a weight-average molecula... | 05/20/2003 |
| 6558591 | Process of making microporous film A microporous film of polyethylene having an intrinsic viscosity above 5 dl/g is prepared from a homogeneous solution in an evaporable solvent. The film is cooled and evaporable solvent is evaporated at a temperature below the dissolution temperature. The... | 05/06/2003 |
| 6540953 | Microporous membrane and method for providing the same A method of producing a microporous membrane comprising the steps of: extruding a polymer at a temperature of from (polymer melting point +10° C.) to (polymer melting point +100° C.); drawing the extruded polymer at a rate of 5~120 m/min in 10~150° C. ... | 04/01/2003 |
| 6524360 | Melt blown composite HEPA filter media and vacuum bag An electret filter media includes an additive or mixtures thereof that enhance the charge stability of the media. The filter media achieves acceptable alpha values for a range of filtration challenges without significant decay in alpha values over time. P... | 02/25/2003 |
| 6245272 | Polyolefin microporous film and method for preparing the same It is an object of the present invention to provide a microporous polyolefin membrane, high in elongation and porosity, low in shrinkage, and capable of improving battery characteristics, safety and productivity, when used for battery separators. The micr... | 06/12/2001 |
| 6177035 | Method for producing cellulose shaped bodies The invention relates to a process for the manufacture of cellulosic flat films and of cellulosic membranes in the form of flat membranes whereby a solution of cellulose in an aqueous tertiary amine oxide is extruded by means of an extrusion nozzle, which... | 01/23/2001 |
| 6165401 | Process for the production of cellulosic moulded bodies The invention relates to a process for the manufacture of cellulosic flat films and cellulosic membranes in the form of flat membranes whereby a solution of cellulose in an aqueous tertiary amine oxide is moulded in film form using an extrusion nozzle whi... | 12/26/2000 |
| 6153133 | Method of producing highly permeable microporous polyolefin membrane A method for producing a highly permeable microporous polyolefin membrane including the steps of preparing a polyolefin solution containing 5-40 weight % of a polyolefin or a polyolefin composition and 95-60 weight % of a solvent, the polyolefin having a ... | 11/28/2000 |
| 6127438 | Polyethylene microporous film and process for producing the same A polyethylene microporous film excellent in mechanical strength, permeability and productivity and having a very high reliability such that the safety of a battery may be secured even under severe circumstances which film has a crosslinked structure and ... | 10/03/2000 |
| 6110251 | Gas filtration media and method of making the same An improved gas filtration media with a lower initial pressure drop and increased dirt holding capacity includes a fibrous mat of randomly oriented meltblown polymeric fibers made from a polymer with between 0.2% and 10.0% by weight of: a) a nucleating ag... | 08/29/2000 |
| 5968994 | High strength porous film of polypropylene and process for producing same A process for producing a porous film of polypropylene comprises subjecting (1) an air-impermeable biaxially stretched film of polypropylene resin comprised predominantly of polypropylene having a crystallinity of at least 40% or (2) an air-impermeable in... | 10/19/1999 |
| 5888434 | Process for making a microporous membrane from a blend containing a poly (phenylene sulfide) polymer, an amorphous polymer, and optionally a solvent The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(phenylene sulfide) polymer by forming a mixture of an unsulfonated poly(phenylene sulfide) polymer, an amorphous polymer, and optionally a plasticizer, heati... | 03/30/1999 |
| 5762840 | Process for making microporous fibers with improved properties A distinctive technique for making porous fiber includes a stretching of a substantially continuous fiber while the fiber is in an operative association with an effective quantity of surface-active material. The fiber can be produced from a source materia... | 06/09/1998 |
| 5759678 | High-strength porous film and process for producing the same The present invention relates to a high-strength porous film or sheet consisting essentially of a high-molecular-weight polyethylene resin having a viscosity-average molecular weight of not less than 300,000, wherein the said film has a thickness of 5 to ... | 06/02/1998 |
| 5683634 | Process of making porous films or sheets A porous film or sheet including a resin composition mainly of an ultra-high molecular weight polyethylene having a viscosity-average molecular weight of not less than 500,000, and having a thickness of 10 to 100 μm, an air permeability of 20 to 2,000 se... | 11/04/1997 |
| 5667743 | Wet spinning process for aramid polymer containing salts A process for wet spinning a meta-aramid polymer solutions having a salt content of at least 3 percent by weight produces a one step, fully wet drawable fiber that has desirable physical properties without subjecting the fiber to hot stretching.... | 09/16/1997 |
| 5658644 | Light weight board of improved mechanical strength and manufacture thereof An extruded hollow plastic board is described which has a pair of flat and parallel sheets spaced apart and interconnected by longitudinally extending ribs. The ribs and sheets are connected with rounded joint areas, which significantly improve the mechan... | 08/19/1997 |
| 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 collected at a moisture content of 8 to 25% based on the dry... | 12/10/1996 |
| 5514308 | Method for hydrosonically embedding a material in a soft thin film material A thin soft film material having fibers and/or particulates embedded therein is disclosed. A process for effecting such embedding utilizing hydrosonics is also disclosed.... | 05/07/1996 |
| 5468543 | Process for producing a ski coating strip made of ultra high molecular-weight polyethylene The invention concerns a process for manufacturing a strip of ski-coating material made of polyethylene of ultra high molecular weight, wherein a ski-coating strip material 4 manufactured to a thickness of 0.5 to 1.5 mm by a screw extruder, a ram extruder... | 11/21/1995 |
| 5275766 | Method for making semi-permeable polymer membranes A method for making a semi-permeable microporous polymer sheet, useful as a separation membrane or the like, including extruding a melt-blended mixture of a high-temperature thermoplastic polymer and a leachable glass to form sheet and then leaching the g... | 01/04/1994 |
| 5266254 | Process for the high-speed spinning of monofilaments A process of high-speed spinning of a set of thermoplastic monofilaments having a linear density from 1 to 30 dtex, includes spinning to obtain melt-spun thermoplastic monofilaments and airblast cooling of the melt-spun monofilaments. To produce a particu... | 11/30/1993 |
| 5227101 | Process of making microporous membranes from poly(etheretherketone)-type polymers and low melting point crystallizable polymers The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type polymer, a low melting point crystallizable polymer, and a... | 07/13/1993 |
| 5219501 | Process for the production of acrylic short fibers without spinning A process for the production of pulp-like short fibers having a highly-oriented fibril structure without spinning is provided. This process comprises heating a mixture of water and an acrylonitrile homopolymer or copolymer to a temperature above the melti... | 06/15/1993 |
| 5205968 | Process for making a microporous membrane from a blend containing a poly(etheretherketone)-type polymer, an amorphous polymer, and a solvent The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type polymer, an amorphous polymer, and a plasticizer, heating ... | 04/27/1993 |
| 5171504 | Process for producing high strength, high modulus thermoplastic fibers The invention provides improved thermoplastic high strength, highly oriented fibers and a process for producing the fibers by melt spinning a thermoplastic polymer to form a threadline, preferably passing the threadline through a thermal conditioning zone... | 12/15/1992 |
| 5160464 | Polymer irradiation A process for the preparation of an oriented homo- or co-polyalkene material of improved strain rate sensitivity, which process comprises subjecting the oriented homo- or co-polyalkene material having a weight average molecular weight (Mw)ࣘ35... | 11/03/1992 |
| 5087401 | Process for preparing polyester filamentary material A process for preparing polyester continuous filamentary material by (a) extruding the polyester material while molten to form filaments, (b) solidifying the molten filaments by cooling them to a temperature at or below their glass transition point, (c) d... | 02/11/1992 |
| 5066755 | Novel irradiated polyethylene filaments tapes and films and process therefor Novel gel-spun, irradiated and drawn ultra high strength high molecular weight and at least partially cross-linked and/or branched polyethylene filaments, tapes and films, exhibiting a combination of substantially lower creep rates, very high heat shrink ... | 11/19/1991 |
| 5064580 | Process for making microporous membranes from poly(etheretherketone)-type polymers A method of preparing a microporous membrane from unsulfonated poly(etheretherketone)-type polymers.... | 11/12/1991 |
| 5057261 | Process for producing modified ultrahigh-molecular-weight polyolefins A process for producing a modified ultrahigh-molecular-weight polyolefin composition, which comprises mixing a powder of an ultrahigh-molecular-weight polyolefin (A) having an intrinsic viscosity of at least 5 dl/g, a flowability improver (B) having a mel... | 10/15/1991 |
| 5055248 | Process for producing stretched article of ultrahigh-molecular weight polyethylene Stretched articles of ultrahigh-molecular-weight polyethylene are prepared by melt-kneading a mixture of ultrahigh-molecular-weight polyethylene with an aliphatic compound (b1) of at least 8 carbon atoms having a melting point of at least 10° ... | 10/08/1991 |
| 5045258 | Process for the preparation of thermoplastic fibers A process for the preparation of thermoplastic fibers which comprises: (a) spinning a solution of an alternating copolymer of an olefinically unsaturated compound and carbon monoxide, having a number average molecular weight of at least 5000, to fibers through... | 09/03/1991 |
