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| Number | Title | Issue Date |
| 7807591 | Fibrous web comprising microfibers dispersed among bonded meltspun fibers A nonwoven fibrous web comprising a matrix of continuous meltspun fibers bonded to a coherent self-sustaining form, and separately prepared microfibers dispersed among the meltspun fibers. The microfibers may have median diameters less than one or two micrometers. A... | 10/05/2010 |
| 7744807 | Nonwoven elastic fibrous webs and methods for making them A coherent nonwoven fibrous web comprises directly formed elastic fibers that have a molecular orientation sufficient to provide a birefringence number of at least 1×10−5 and preferably at least 1×10−2. The web can be made by a method tha... | 06/29/2010 |
| 7695660 | Bondable, oriented, nonwoven fibrous webs and methods for making them Nonwoven fibrous webs comprise fibers of uniform diameter that vary in morphology along their length. The variation provides longitudinal segments that exhibit distinctive softening characteristics during a bonding operation. Some segments soften under the condition... | 04/13/2010 |
| 7591058 | Nonwoven amorphous fibrous webs and methods for making them Nonwoven fibrous webs including amorphous polymeric fibers with improved and/or more convenient bondability are disclosed. The nonwoven fibrous webs may include only amorphous polymeric fibers or they may include additional components in addition to amorphous polyme... | 09/22/2009 |
| 7470389 | Method for forming spread nonwoven webs A new fiber-forming method, and related apparatus, and webs prepared by the new method and apparatus are taught. In the new method a) a stream of filaments is extruded from a die of known width and thickness; b) the stream of extruded filaments is directed through a... | 12/30/2008 |
| 7279440 | Nonwoven amorphous fibrous webs and methods for making them Nonwoven fibrous webs including amorphous polymeric fibers with improved and/or more convenient bondability are disclosed. The nonwoven fibrous webs may include only amorphous polymeric fibers or they may include additional components in addition to amorphous polyme... | 10/09/2007 |
| 6916752 | Bondable, oriented, nonwoven fibrous webs and methods for making them Nonwoven fibrous webs comprise fibers of uniform diameter that vary in morphology along their length. The variation provides longitudinal segments that exhibit distinctive softening characteristics during a bonding operation. Some segments soften under the condition... | 07/12/2005 |
| 6824372 | Fiber-forming apparatus A new fiber-forming method, and apparatus useful for performing the method, are taught in which extruded filaments of fiber-forming material are directed through a processing chamber that is defined by two parallel walls, at least one of which is instantaneously mov... | 11/30/2004 |
| 6667254 | Fibrous nonwoven webs New fibrous nonwoven webs are taught that comprise a mass of polyethylene terephthalate fibers that exhibit a double melting peak on a DSC plot: one peak is representative of a first molecular portion within the fiber that is in non-chain-extended crystal... | 12/23/2003 |
| 6059860 | Sorptive articles A sorptive article is provided. The sorptive article includes a polyolefin, a wax which is miscible with the polyolefin at the melt temperature of the polyolefin but phase separates on cooling of the article, and sorptive particles distributed in the arti... | 05/09/2000 |
| 5753754 | Flame-treating process The present invention provides a method of modifying the surface of a polymeric substrate, e.g., to improve the wettability of the polymer film surface and/or alter the reactivity of the surface of the substrate by further oxidation or affixation of nitro... | 05/19/1998 |
| 4868032 | Durable melt-blown particle-loaded sheet material A permeable sheet material comprised of particle-loaded, melt-blown fiber web having a plurality of reinforcing fibers extending therethrough is provided. The reinforcing fibers are needled through the web of melt-blown fibers and are then bonded to fiber... | 09/19/1989 |
| 4861635 | Pressure-sensitive adhesive closure for disposable diaper A pressure-sesnsitive adhesive closure for a disposable diaper can exhibit high peel resistance both at low and high speeds while its peelability at high speeds is not excessively shocky when it employs a pressure-sensitive adhesive of a certain rheology ... | 08/29/1989 |
| 4842739 | High surface area filter cartridge New, high surface area per unit volume, generally cylindrical filter cartridge for gaseous or liquid filter applications are described. These filter cartridges which comprise a nested arrangement of substantially disk shaped layers having a radial pleat p... | 06/27/1989 |
| 4827924 | High efficiency respirator The invention provides a filtration face mask which has an expanded filtration surface area and high filter efficiency. The mask includes at least two sidewall portions generally extending away from the face of the wearer and away from an annular base. A ... | 05/09/1989 |
| 4807619 | Resilient shape-retaining fibrous filtration face mask New molded fibrous filtration face masks that are highly resilient and shape-retaining are provided using one or more molded fibrous shaping layers, with a fibrous filtration layer disposed on one side of or between the molded fibrous shaping layers; the ... | 02/28/1989 |
| 4808474 | Pressure-sensitive adhesive tape having improved toughness Pressure-sensitive adhesive tapes which have improved toughness for use as diaper closure tapes are provided. The tapes have a backing of a substantially untensilized, tough, ductile film that is a blend of crystalline isotactic polypropylene and a compat... | 02/28/1989 |
| 4808471 | Flat transparent top coat for retroreflective sheeting The novel retroreflective sheeting has a flat transparent top coat which is as tough and as resistant to solvents and abrasion as are alkyd resins, and as weather resistant as are acrylic polyesters. That top coat is made from a mixture of hydroxy-functio... | 02/28/1989 |
| 4795668 | Bicomponent fibers and webs made therefrom Biocomponent fibers, and webs made therefrom, are taught in which one component of the fibers is a crystallizable material. When a web of the fibers is heated in a mold above the temperature at which crystallization occurs, the fibers tend to be set in th... | 01/03/1989 |
| 4790306 | Respiratory mask having a rigid or semi-rigid, insert-molded filtration element and method of making A filtering device is made by inserting into an injection mold a porous, rigid or semi-rigid filtration element that has inflow and outflow faces separated by a peripheral surface and then injecting resin into the flow channel of the mold at a pressure an... | 12/13/1988 |
| 4778701 | Composite prelaminated tape system A composite adhesive closure tape comprising an assembly of sheets laminated one over the other including a central elastomeric sheet having at least one stretching axis; anchor strips disposed over the elastomeric sheet and adhered to opposite marginal e... | 10/18/1988 |
| 4775219 | Cube-corner retroreflective articles having tailored divergence profiles Cube-corner retroreflective article having improved divergence profiles. The three lateral reflecting faces of the cube-corner retroreflective elements are formed by three intersecting sets of parallel V-shaped grooves, and at least one of the sets includ... | 10/04/1988 |
| 4767659 | Enclosed-lens retroreflective sheeting having tough, weather-resistant, transparent cover film A transparent cover film better protects enclosed-lens retroreflective sheeting and can be applied more economically when it is extruded and is a thermoplastic polymer which has good elongation and minimal elastic memory. Preferred polymers are (a) alipha... | 08/30/1988 |
| 4750324 | Elastic composite yarns from brittle ceramic yarns The present invention makes possible fabrics stitchbonded with or knitted from brittle yarns by providing a composite yarn which is able to be used in commercial stitchbonding and knitting machines, the new composite yarn comprising a load-bearing core ya... | 06/14/1988 |
| 4744831 | Hollow inorganic spheres and methods for making such spheres Novel hollow inorganic spheres are prepared by (1) tumbling together a mixture comprising (a) solidifiable liquid globules that comprise a fugitive organic binder material and a source of volatile void-forming agent and (b) a mass of free-flowing inorganic sinterab... | 05/17/1988 |
| 4729371 | Respirator comprised of blown bicomponent fibers Fibrous webs of bicomponent fibers are made by extruding a layered molten mass through a row of side-by-side orifices into a high-velocity gaseous stream. Bicomponent fibers of small size can be obtained, and the webs offer unique properties.... | 03/08/1988 |
| 4712868 | Expanded retroreflective sheet material Retroreflective sheet material capable of retroreflecting light at high incidence angles is prepared by laminating retroreflective sheeting to a base sheet, slitting the laminated sheet assembly in an array of spaced discontinuous slits, and expanding the... | 12/15/1987 |
| 4710190 | Diaper having improved reinforced area for receiving adhesive fastening tape A disposable diaper is provided which includes an outer liquid-impermeable film and a bilayer film bonded to the liquid-impermeable film as a peel-resistant reinforced fastening area. The bilayer film comprises a reinforcing layer and a room-temperature-n... | 12/01/1987 |
| 4703999 | Wide-angle-reflective cube-corner retroreflective sheeting Cube-corner retroreflectors having a rear surface configured with a cube-corner reflective element are made capable of reflecting light over a wide range of incident angles by placing a specularly reflective surface shaped as a negative of the cube-corner... | 11/03/1987 |
| 4681801 | Durable melt-blown fibrous sheet material A durable fibrous sheet material comprised of a melt-blown fiber web having a plurality of reinforcing fibers extending therethrough is provided. The reinforcing fibers are needled through the web of melt-blown fibers and are then bonded to fibers on the ... | 07/21/1987 |
| 4664966 | Enclosed-lens retroreflective sheeting having tough, weather-resistant, transparent cover film A transparent cover film better protects enclosed-lens retroreflective sheeting and can be applied more economically when it is extruded and is a thermoplastic polymer which has good elongation and minimal elastic memory. Preferred polymers are (a) alipha... | 05/12/1987 |
| 4663213 | Transparent multi-layer cover film for retroreflective sheeting Retroreflective sheeting has a flat, transparent cover film of excellent clarity and weatherability that resists dirt accumulation while also having good flexibility, conformability and stretchability, this desirable combination of properties being achiev... | 05/05/1987 |
| 4650283 | Directionally imaged retroreflective sheeting Retroreflective sheeting of the prior art comprises a monolayer of transparent glass microspheres partially embedded in a binder layer and a specularly reflective layer covering the back surfaces of the microspheres. In the prior art, a laser beam directe... | 03/17/1987 |
| 4648932 | High-angularity retroreflective sheeting and method for manufacture A new embedded-lens retroreflective sheeting which exhibits superior properties, including superior angularity, and which is made by a new method of manufacture involving lamination techniques. Microspheres are embedded into a first polymeric layer to les... | 03/10/1987 |
| 4637950 | Delamination-resistant cellular retroreflective sheeting Cellular retroreflective sheeting, which comprises a base sheet of retroreflective elements and a polymeric cover film disposed in space relation from the base sheet by a network of narrow intersecting bonds that form hermetically sealed cells. The cover ... | 01/20/1987 |
| 4634220 | Directionally imaged sheeting Sheeting having images that are viewable within limited angles of viewing from the front of the sheeting are prepared from retroreflective sheeting or from sheeting patterned after retroreflective sheeting, i.e., sheeting having a monolayer of microlenses... | 01/06/1987 |
| 4630891 | Tamper resistant security film Security film comprising a monolayer of transparent microspheres supported in a thin layer of binder material, a pressure-sensitive adhesive layer coated on the layer of binder material, and disposed between the pressure-sensitive adhesive and binder laye... | 12/23/1986 |
| 4621122 | High-temperature resistant electrically insulating coating powder Electrically insulating wire coatings are resistant to prolonged exposure to 200° C. when formed from a powder which, in a preferred composition, is a blend of (a) epoxy-terminated adduct of hydantoin diepoxide and aromatic dicarboxylic acid imide dissol... | 11/04/1986 |
| 4588258 | Cube-corner retroreflective articles having wide angularity in multiple viewing planes Cube-corner retroreflective articles having improved angularity along multiple viewing planes are provided. The articles comprise at least one matched pair of cube-corner retroreflective elements which are rotated 180° with respect to one another, the th... | 05/13/1986 |
| 4582609 | Filtration device and method A new filtration device which floats in a body of the liquid to be filtered and which makes use of a bed of granular buoyant filtration media. The device comprises buoyancy means for giving the device sufficient buoyancy to float in the body of liquid; fl... | 04/15/1986 |
