Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7192550 | Method and apparatus for spinning a web of mixed fibers, and products produced therefrom A device and method for spinning polymer fibers utilizes one or more independent sources of polymer materials, pumps for feeding polymer material from each of the sources, and a series of distribution plates with surface grooves, through holes and/or slots together ... | 03/20/2007 |
| 7101597 | Medical devices made from polymer blends containing low melting temperature liquid crystal polymers A medical device, at least a portion of which is composed of a polymeric material in which the polymeric material is a melt blend product of at least two different thermoplastic polymers, one of the thermoplastic polymers being a thermoplastic liquid crystal polymer... | 09/05/2006 |
| 6924032 | Flame retarding polypropylene fiber and production method thereof and flame retarding polypropylene film A flame retarding polypropylene fiber and flame retarding polypropylene film having both good flame retardancy and good fiber strength and film strength, and generating no toxic gas, and a production method thereof are provided. 0.5 to 3.0% by weight of a NOR type h... | 08/02/2005 |
| 6833104 | Method and apparatus for spinning a web of mixed fibers, and products produced therefrom A device and method for spinning polymer fibers utilizes one or more independent sources of polymer materials, pumps for feeding polymer material from each of the sources, and a series of distribution plates with surface grooves, through holes and/or slots together ... | 12/21/2004 |
| 6787081 | Manufacturing method for differential denier and differential cross section fiber and fabric A manufacturing method for differential denier and differential cross section fiber and fabric is provided, wherein the method comprising melting two polymers having different alkali dissolution rate respectively, blending the two polymers in an adjusted ratio, then... | 09/07/2004 |
| 6780357 | Splittable multicomponent polyester fibers Mechanically divisible multicomponent fibers have at least a component including poly(lactic acid) polymer and at least a second component including at aromatic polyester. The multicomponent fibers are particularly useful in the manufacture of nonwoven structures, a... | 08/24/2004 |
| 6737009 | Process and system for producing multicomponent spunbonded nonwoven fabrics A system and process for producing spunbond nonwoven fabric in which two or more polymeric components are separately melted and are separately directed through a distribution plate configured so that the separate molten polymer components combine at a multiplicity o... | 05/18/2004 |
| 6506327 | Process of making monofilaments In a method for producing a monofilament with reduced secondary binding forces of at least two commonly extruded polymers for the production of bristles or interdental cleaners which are slittable substantially axially through the action of mechanical for... | 01/14/2003 |
| 6454989 | Process of making a crimped multicomponent fiber web The present invention provides continuously crimped propylene polymer nonwoven fabrics as well as processes for forming crimped multicomponent propylene polymer fibers by melt-attenuating extruded multicomponent fibers with heated or unheated air wherein ... | 09/24/2002 |
| 6332994 | High speed spinning of sheath/core bicomponent fibers Processes whereby sheath/core bicomponent fibers are melt-spun at relatively high spinning rates. In particularly preferred forms, polyamide sheath/core bicomponent fibers are made at melt-spinning speeds of about 4000 meters per minute or greater, and mo... | 12/25/2001 |
| 6332993 | Process of making heat-retaining fibers A method for making heat-retaining fiber and fabrics. According to the present invention, the white conductive particles and the white particles with good radiating efficiency of far-infrared radiation are added in fiber-forming polymers to obtain the mix... | 12/25/2001 |
| 6162382 | Process of making multicomponent fiber Multicomponent fibers and methods of producing the same are provided such that an inter-domain boundary layer is interposed between distinct domains formed of incompatible polymers so as to minimize (if not eliminate entirely) separation of the domains at... | 12/19/2000 |
| 6153138 | Process for modifying synthetic bicomponent fiber cross-sections Bicomponent fibers of different cross-sections may be formed without changing the geometry of the spinneret orifices. More specifically, at least two polymers are co-melt-spun through an orifice of fixed geometry so as to achieve a bicomponent fiber havin... | 11/28/2000 |
| 6074590 | Process of making a bicomponent fiber Bicomponent fibers of isotactic polypropylene and syndiotactic polypropylene, methods of making such fibers and products made thereof.... | 06/13/2000 |
| 6039903 | Process of making a bicomponent fiber Novel bicomponent fibers have a polyamide domain and a contaminant-containing polymer domain which is embedded entirely within, and thereby completely surrounded by, the polyamide domain. The preferred bicomponent fibers have a sheath-core structure where... | 03/21/2000 |
| 6017479 | Process of making a multiple domain fiber having an inter-domain boundary compatibilizing layer Multicomponent fibers and methods and apparatus for producing the same are provided such that an inter-domain boundary layer is interposed between distinct domains formed of incompatible polymers so as to minimize (if not eliminate entirely) separation of... | 01/25/2000 |
| 6017478 | Method of making hollow bicomponent filaments Novel bicomponent fibers have a sheath domain and an core domain which is embedded entirely within, and thereby completely surrounded by, the polyamide domain. The core domain is annular and defines a longitudinally extending central void. The preferred b... | 01/25/2000 |
| 6010654 | Method of making multiple domain fibers Multicomponent fibers have a primary core, and multiple secondary cores equidistantly radially spaced from one another and from the primary core. The primary and secondary cores are entirely embedded within (and thus completely encased by) a primary sheat... | 01/04/2000 |
| 5985192 | Process for the manufacture of spiralled bristles The invention relates to a method for the manufacture of screwlike bristles by extruding monofilaments. In order to provide a method with which screwlike bristles can be inexpensively manufactured in the same way as conventional bristles with an identical... | 11/16/1999 |
| 5902530 | Process of making high nitrile composite filaments A novel composite high-nitrile fiber in which the polymers are arranged in a sheath core type configuration. One polymer of the composite filament contains a solventless, waterless, melt-processable acrylonitrile olefinically unsaturated polymer and the o... | 05/11/1999 |
| 5876650 | Process of making fibers of arbitrary cross section The present invention relates, in general, to fiber spinning and, in particular, to a process of spinning fibers of more than one cross-sectional component and to fibers produced thereby.... | 03/02/1999 |
| 5853635 | Method of making heteroconstituent and layered nonwoven materials The present invention is directed to a method of forming a heteroconstituent nonwoven web including a mixture of different filament types simultaneously formed into the same web. The filament types may differ as to polymer composition, additive loadings, ... | 12/29/1998 |
| 5811040 | Process of making fiber for carpet face yarn The specification describes a process of making a fiber for a carpet face yarn, the yarn being made of polyolefin/polymer filaments which contain a plurality of longitudinally dispersed relatively small, short polymer fibrils inside the filaments generall... | 09/22/1998 |
| 5776223 | Method of making shaped fibers In a method of making a shaped fiber, a stream of fiberizable material is provided with an original shape and a void fraction from 20% to 80%. The void fraction can be provided by forming a hollow stream, a porous stream or a significantly shaped stream. ... | 07/07/1998 |
| 5620641 | Polyethylene terephthalate sheath/thermoplastic polymer core bicomponent fibers, method of making same and products formed therefrom Sheath-core bicomponent fibers comprising a core of a low-cost, high strength, thermoplastic material, preferably polypropylene or polybutylene terephthalate, completely covered with a sheath formed of polyethylene terephthalate or a copolymer thereof are... | 04/15/1997 |
| 5556589 | Process of using a spin pack for multicomponent fibers The invention is directed to a device for spinning fibers, especially bicomponent fibers having a sheath/core configuration. The device has, in a preferred embodiment, disposed in the spinneret orifices a grooved pin with an axial bore (a hollow pin). A p... | 09/17/1996 |
| 5500175 | Process of producing heat-softenable, hopper-feedable plastic pellets containing folded reinforcing fibers Process and product for manufacturing continuous fiber reinforced sheets and shapes. A pressurized extrusion process consisting of a paired and edge enclosing doctor blades that remove feed material from a pair of pinch rolls and contain such in an optima... | 03/19/1996 |
| 5393470 | Process for manufacturing optical fibers A process for manufacturing optical fibers includes extruding a transparent thermoplastic plastic sheet having plurality of transversely shaped and spaced parallel grooves extending in the longitudinal direction of extrusion. The thermoplastic sheet is ro... | 02/28/1995 |
| 5380472 | Method and apparatus for manufacturing chamber members for accepting light waveguides An apparatus for forming a chamber member which receives optical light waveguides comprises an extruder head for extruding the chamber member followed by a calibrating device which inserts members into each of the chambers to insure the desired dimensions... | 01/10/1995 |
| 5372885 | Method for making bicomponent fibers A method is disclosed for making thermoplastic bicomponent fibers by contacting under thermally bonding conditions (a) a first component being at least one high performance thermoplastic polymer, such as PET, PBT, nylon or the like, and (b) a second compo... | 12/13/1994 |
| 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 bundle according to the present invention includes the steps... | 01/11/1994 |
| 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 simultaneously co-spun. The present process can be performed at spinnin... | 01/11/1994 |
| 5260013 | Sheath-core spinning of multilobal conductive core filaments Multilobal core conductive bicomponent sheath-core filaments are provided and methods for making the same.... | 11/09/1993 |
| 5244614 | Process of making multicomponent trilobal fiber A method of producing a multicomponent trilobal fiber includes providing a trilobal capillary defining three legs, three apexes and an axial center, directing a first molten polymer composition to the axial center and presenting a second molten polymer co... | 09/14/1993 |
| 5162074 | Method of making plural component fibers A method for extruding a wide variety of plural-component fiber configurations in a spin pack utilizes one or more disposable distributor plates in which distributor flow paths are etched on one or both sides to distribute the polymer components to approp... | 11/10/1992 |
| 5154934 | Alternate high-molecule arrangement production system The invention relates to the alternate high-molecular arrangements manufactured through apparatus wherein the layers of at least two component high-molecular fluids are formed into layers and so combined with another high-molecular fluid that the former's... | 10/13/1992 |
| 5104601 | Process for producing a polyhexamethylene adipamide, caprolactam and polypropylene fiber A process for producing a nylon 6,6 and polypropylene fiber wherein deposits of polypropylene on the yarn guide surface are substantially eliminated by adding nylon 6.... | 04/14/1992 |
| 5035848 | Filament separation in liquids A method of separating filaments from a clump thereof in a liquid flow from each other by sub-dividing the flow across its lateral extent to pass through an array of a plurality of filament separating channels having a cross-section at least large enough ... | 07/30/1991 |
| 4941812 | Spinneret for production of a hollow filament within a hollow filament composite fiber having spacing means The apparatus concerns hollow fibers and, more particularly, a hollow filament co-spun within another hollow filament composite fiber wherein spacing means is provided to separate the inner and outer filament walls and spinnerets for co-spinning such fibe... | 07/17/1990 |
| 4743189 | Spinneret for a co-spun filament within a hollow filament A hollow fiber which contains within the hollow a co-spun hollow or solid filament. The solid filament is formed of polymer that can distribute energy within the hollow fiber while a co-spun hollow inner filament can also act as a vessel for transportatio... | 05/10/1988 |
