Abstract: A feedblock for supplying a multi-layer stream of polymeric material to an extrusion die is provided wherein the dimension of at least some of the layers of the multi-layer stream can be precisely adjusted and/or controlled. The feedblock includes a primary flow path which is used to create a first layer and two secondary flow paths which are used to create a set of second and third layers. The secondary flow paths are positioned relative to the primary flow path such that the second and third layers are deposited on opposing sides of the primary layer in a sandwich-like configuration. Each of the secondary flow paths include a contoured slot through which a secondary fluid stream of polymeric material is deposited onto a primary stream of polymeric fluid flowing in the primary flow path. The contoured slot is geometrically shaped such that adjusting the position of the contoured slot alters the shape of the secondary fluid stream as it is deposited onto the primary flow path.

Abstract: A nozzle for extruding an article has at least three layers of thermoplastic materials. A housing has a longitudinal axis. At least three extrusion dies are contained in the housing and aligned with the longitudinal axis. Each die has a face with a die channel in the face. Each die channel is a closed geometric figure. Each die channel has at least one inlet for receiving a respective thermoplastic material. Each die channel provides a respective outlet for feeding a respective one of the plurality of layers of thermoplastic materials to a respective flow channel within the housing. The flow channels deliver the plurality of layers so that at least three of the layers combine within the nozzle at substantially the same coordinate measured along the longitudinal axis.

Abstract: A method for adhering/bonding a frame profile (e.g., weather strip, water seal, spacer, etc.) to a substrate (e.g., glass or plastic substrate) in the context of a vehicle window unit. A frame profile is formed via extrusion so as to include both a polymer profile portion and a selectively activatable interface or adhesive portion. Following extrusion, the frame profile may be stored, cut, trimmed, cure, etc. At some point following extrusion, the interface/adhesive is in a non-activated state, or at least in a state where it is not activated to an extent sufficient to bond/adhere the frame to the substrate. To adhere/bond the frame profile to the substrate, the interface/adhesive portion of the frame profile is activated (e.g., heat activated). Following and/or during heat activation, the frame profile is pressed against the substrate, or vice versa, so that the activated adhesive bonds the polymer profile to the substrate.

Abstract: A method for preparation of a solid state electrochemical device having a cathode, and anode and an electrolyte positioned between the cathode and the anode is disclosed, comprising the steps of forming a controlled geometry feedrod having a cross sectional area, having at least a first extrusion compound and a second extrusion compound, and co-extruding the controlled geometry feed rod through a reduction die at least once to achieve a desired reduction in cross sectional area. Such microfabrication by thermoplastic co-extrusion enhances production of complex and multiphase electrodes and electrolytes.

Abstract: Extruded polymeric articles useful for supporting, acoustically isolating and vibrationally dampening a pipe segment in relation to a structural support member, the articles having coextruded unfoamed and foamed polymeric layers and being attachable to the structural support member using nails, screws, formed wire hangers or other similarly effective fasteners. A method for making the subject articles and a system comprising a perforated, coextruded acoustic pipe support strap in combination with a shaped wire hanger for use in suspending a pipe segment from the web portion of a laminated joist having an I-beam cross section are also disclosed.

Abstract: A bi-axially oriented, heat-shrinkable multi-layer film comprising a core layer (A) comprising an ethylene-vinyl alcohol copolymer (EVOH), a first outer layer (B) comprising an ethylene homo- or co-polymer and a second outer layer (C), which may be equal to or different from the first outer layer (B), comprising an ethylene homo- or co-polymer, characterized in that said film has been bi-axially oriented at an orientation ratio in the longitudinal direction higher than 4:1, preferably higher than 4.5:1, more preferably of at least 5:1 and at an orientation ratio in the cross-wise direction higher than 4:1, preferably higher than 4.5:1, more preferably of at least 5:1, is obtained by a process which comprises melt extrusion of the film polymers through a flat die and orientation of the obtained cast sheet simultaneously in the longitudinal and the transversal directions by a simultaneous tenter.

Abstract: Inclusion of relatively small amounts of organic ionic species, such as calcium stearate, in the preparation of an electrically conductive polymer composite composition provides a composition having enhanced electrical properties relative to the composite composition lacking the added organic ionic species. As a result of this enhancement, normally insulating materials which rely upon a conductive filler to render them electrically conductive, can be made to achieve a given level of conductivity using less of the conductive filler than would otherwise be required. As a result, the adverse effects of the conductive filler on the polymer's physical properties can be minimized while maintaining a high level of electrical conductivity.

Abstract: The present application discloses a film comprising a first layer formed from a first extruded and solidified material and a second layer formed from a second extruded and solidified material. The first material has a lower coefficient of friction when solidified than the second material.

Abstract: A backing film for incorporation as a backing layer in a resilient floor covering or a floor tile having at least two laminae and a method for making such a backing layer whereby waste is reduced when the color of the upper lamina is changed. Where there are two backing films having two or three laminae making up the backing layer the intermediately colored film resulting from a change in the color of the upper lamina can be utilized without further processing on the second backing film where color is not essential. Where there are three laminae making up a backing film the desired color is introduced and established in the bottom lamina before the supply of the original color to the upper lamina is stopped. The film can then be turned over for use with the former bottom lamina becoming the upper lamina.

Abstract: This invention concerns a multilayer film useful as release sheet for sheet molding compounds, comprising a first skin layer, a second skin layer, a barrier layer for monomeric resins wherein the barrier layer is between the first and second skin layers and the first and second skin layers comprise a mixture of polyolefin and adhesive resin. This invention also pertains to the multilayer films method of production, as well as an SMC sheet employing the multilayer film.

Abstract: A heat shrinkable film suitable for use in cook-in applications is provided which exhibits a transverse direction free shrink at 50° C. of less than about 2% and a transverse direction free shrink at 57° C. of at least about 3%. The food contact layer includes a polymer having a surface energy of at least about 0.034 J/m2 and a second layer includes at least one member selected from the group consisting of polyester, polyvinylidene chloride, polyamide and polyalkylene carbonate. Preferably, the desired shrink properties are attained by annealing the film under controlled conditions.

Abstract: Thermoplastic multilayer composite, particularly in the form of a multilayer hose, a multilayer pipe or a multilayer container, containing at least one intermediate layer made of a molding compound on the basis of ethylene/vinyl alcohol copolymers between layers made of molding compounds on the basis of polyamide, the intermediate layer being bonded via at least one adhesion-promoting layer made of a molding compound on the basis of polyamide selected from the group of copolyamide 6/12, block copolyamide 6/12, polyamide 612, polyamide 610, a mixture of polyamide 6 and polyamide 12 with compatibilizer, a mixture of polyamide 6 and polyamide 11 with compatibilizer, with at least one neighboring layer made of a molding compound on the basis of polyamide 12, polyamide 11, polyamide 1010, polyamide 1012, or polyamide 1212.

Abstract: A composite film is provided by providing a polypropylene or other base resin layer, laminating a first covering layer of a resin composition (1) comprising the following components (A), (B), (C) and (D) to one side of the base resin layer and a second covering layer of a resin composition (2) comprising the components (A) and (D) to the other side of the base resin layer, which composite film is optionally stretched. The resin composition (2) may contain component (C).

Abstract: A method for manufacturing a pattern-through soap is disclosed, in which a pattern block is embedded into a soap and penetrates through the two faces of the soap. After the soap is used for a long time, the pattern remains clear. The method for embedding the pattern block in the soap is: feeding materials from a primary tube and a secondary tube; a flow dividing mold is installed at the bottom of the secondary tube and a dispatching tube is connected to the primary tube. The soap material of the secondary tube firstly flows through the mold at the bottom of the flow dividing mold and is squeezed to be formed as a strip shape soap material. Then, the soap material of the primary tube flows through the outer side of the flow dividing mold to enclose the patterned soap material. Then, the soap material is sent out from the shaping mold at the outlet of the mixing tube so as to be formed with a strip shape soap. Then, the soap can be cut according to the desired thickness.

Abstract: A geomembrane comprising a unitary structure fabricated by co-extrusion including a center core, a thermoplastic adhesive layer secured on one side of the center core, and a textured layer secured on the opposite side of the center core. The geomembrane is utilized in the manufacture of a liner for earthen constructions by employing the thermoplastic layer of the geomembrane to secure the geomembrane to a geosynthetic clay liner.

Abstract: A thermoplastic dicyclopentadiene ring-opening polymer obtained by ring-opening polymerization of a monomer component containing a dicyclopentadiene monomer, characterized in that polycyclic rings which are repeating units of the polymer are bonded in cis-position relative to the carbon-carbon double bond of the main chain of the polymer in 50 mol % or more of the repeating units based on the total repeating units and the content of a low-molecular weight component of 2,000 or less in molecular weight is 10% by weight or less based on the total polymer components, and a hydrogenation product obtained by hydrogenating the carbon-carbon unsaturated bond of the thermoplastic dicyclopentadiene ring-opening polymer.

Abstract: The present invention provides coextruded or laminated films having at least one layer of a fluoropolymer homopolymer or copolymer, a layer of a cyclic olefin homopolymer or copolymer and an intermediate adhesive layer. Such films have a high moisture barrier property and are substantially transparent.

Abstract: The present invention is directed to a biaxially oriented multi-layer film which comprises: (a) a core layer comprising a syndiotactic propylene homopolymer; and (b) at least one additional layer adjacent to the core layer comprising a polymer which is an ethylene or a propylene homopolymer, ethylene copolymer or terpolymer containing comonomers of propylene and/or butene-1. Optionally, there can be a skin layer applied to the exposed surface of the outer layer. The skin layer and/or the at least one additional layer is a polyolefin selected from the group consisting of isotactic polypropylene, polyethylene, ethylene-propylene random copolymer, ethylene-propylene block copolymer or ethylene-propylene -butene-1 terpolymer.

Abstract: Film-forming means are coextruded to form all plastic multilayer liners and facestocks for pressure-sensitive labels, tapes, decals, signs, bumper stickers, and other products formed from sheet and roll stock. Fill means in a charge for the liner coextrusion affects stiffness and dimensional stability of the liner and/or affects the roughness of a liner face or faces. The film materials of the layers of the constructions are selected according to the cost/benefit characteristics of candidate materials considering the functional or operational requirements of the layer in question.

Abstract: An oriented multilayer film comprises:

Abstract: The application discloses a transparent, biaxially oriented polyester film having a base layer at least 80% by weight of which is composed of a thermoplastic polyester, and having at least one outer layer, wherein the outer layer is composed of a polymer or a mixture of polymers which comprises at least 40% by weight of ethylene 2,6-naphthalate units and up to 60% by weight of ethylene terephthalate units and/or units from cycloaliphatic or aromatic diols and/or dicarboxylic acids, with the proviso that the Tg2 value of the polyester film is above the Tg2 value of the base layer but below the Tg2 value of the outer layer, where the base layer comprises particles and the Ra value of at least one surface is between 1 and 1000. The film has low gas transmission. It is particularly suitable for packaging uses, specifically for packaging foodstuffs and other consumable items, or as magnetic tape film and as capacitor film.

Abstract: The application discloses a transparent, biaxially oriented polyester film having a base layer at least 80% by weight of which is composed of a thermoplastic polyester, and having at least one outer layer, wherein the outer layer is composed of a polymer or a mixture of polymers which comprises at least 40% by weight of ethylene 2,6-naphthalate units and up to 60% by weight of ethylene terephthalate units and/or units from aliphatic, cycloaliphatic, or aromatic diols and/or dicarboxylic acids, with the proviso that the base layer has a diethylene glycol content in the range from 0.9 to 3.0% by weight.

Abstract: The invention relates to a biaxially oriented, sealable polyester film with at least a base layer (B), with a sealable outer layer (A) and with another, nonsealable outer layer (C), where the sealable outer layer (A) has a minimum sealing temperature of not more than 110° C. and a seal seam strength of at least 1.3 N/15 mm of film width, and the topographies of the two outer layers (A) and (C) have particular characterizing features. The film of the invention is particularly suitable for use in flexible packaging and specifically in particular for use on high-speed packaging machinery.

Abstract: The invention relates to a coextruded, transparent, biaxially oriented polyester film having at least three layers, with at least one base layer B, at least 80% by weight of which is composed of a thermoplastic polyester, where an outer layer has been applied to each surface of this base layer, and where at least one outer layer comprises particles, wherein the gloss of both surfaces of the film is above 170 the haze of the film is below 2.4% the planar orientation &Dgr;p of the film is below 0.162. the coefficient of friction (COF) is below 0.6. The invention further relates to the use of a film of this type, and also its production.

Abstract: The invention relates to a transparent, biaxially oriented polyester film with a base layer B, at least 80% by weight of which is composed of a thermoplastic polyester, and with at least one outer layer A. The outer layer A is composed of a copolymer or a mixture of polymers/copolymers which contains ethylene 2,6-naphthalate units in a range of from 90 to 98% by weight and up to 10% by weight of ethylene terephthalate units, and/or units derived from cycloaliphatic or aromatic diols and/or dicarboxylic acids. Its thickness is more than 0.7 &mgr;m and makes up less than 25% by weight of the total film and the Tg2 value of the polyester film is above the Tg2 value of the base layer, but below the Tg2 value of the polyester for the outer layer. The transparent film has low permeability to atmospheric oxygen and exhibits very good adhesion between the individual layers. It is particularly suitable for packaging purposes, specifically for packaging foods or other consumable items.

Abstract: A method of manufacturing articles utilizing a composite material having a high density of small particles such as microspheres in a matrix material is disclosed. In accordance with one aspect of the present invention, at least first and second layers of flanking material are disposed in a generally non-parallel relationship with respect to each other and then are pulled through a die. While the flanking material layers are being pulled through the die, a composite material is injected into a space defined between the at least first and second layers of flanking material. The composite material and the at least first and second layers of flanking material are heated as they pass through the die to cure the composite material and bond the at least two flanking material layers to the composite material, thereby forming a cured article.

Abstract: A method of extruding plastic material in multi-layer form includes: providing an extrusion die having a first body member and a second body member surrounding the first body member and forming an annular passage therebetween which communicates with an annular extrusion orifice, the body members having a series of helical grooves extending around the die and each commencing at a separate location, the separate locations being spaced around a lower portion of the first body member. A single encapsulating unit provides a flow of encapsulated plastic material comprising a first plastic material surrounded by a second plastic material at an outlet thereof. The first body member having a series of cross-holes extending from the encapsulating unit output and each communicating with a respective separate location.

Abstract: The invention relates to a biaxially oriented polyester film having at least one matt side and composed of at least one base layer (B) made from a thermoplastic polyester and of, applied to this base layer (B), at least one matt outer layer (A) which comprises at least 70% by weight of thermoplastic polyester. The outer layer (A) has a characteristic matt surface and characteristic optical properties and has good suitability for use as a packaging film or for industrial application. The invention further relates to the use and to a process for its production.

Abstract: The invention relates to a biaxially oriented polyester film having at least one matt side and composed of at least one base layer (B) and of, applied to this base layer, at least one matt outer layer (A) which comprises at least 70% by weight of thermoplastic polyester and also to a pigment system with narrow grain size distribution. The invention further relates to the use of the film and to a process for its production. The film of the invention with the outer layer (A) has a characteristic matt surface and characteristic optical properties and has good suitability for use as a packaging film or for industrial applications.

Abstract: The invention relates to a matt, biaxially oriented polyester film having at least one matt base layer (B) which comprises at least 70% by weight of thermoplastic polyester, and also a pigment system with narrow grain size distribution. The invention further relates to the use of the film and to a process for its production. The film of the invention has characteristic matt surfaces and has good suitability for use as a packaging film or for industrial applications.

Abstract: Decorative ionomeric surfaced film and sheet (e.g., multilayer co-extruded polymer) and articles made therefrom (e.g., automotive panels and parts) exhibiting good weatherability, mar resistance, and surface appearance of a high quality automotive finish (including color, haze, gloss, and DOI) and economical process for making (e.g., co-extrusion) and using (e.g., thermoforming and injection backfilling) the same.

Abstract: A metalized or ceramic-coated biaxially oriented polyester film is disclosed, with a base layer B which comprises at least 80% by weight of thermoplastic polyester, and with at least one outer layer A. The outer layer A is composed of a copolymer or of a mixture of polymers/copolymers which contains from 90 to 98% by weight of ethylene 2,6-naphthalate units and up to 10% by weight of ethylene terephthalate units, and/or units derived from cycloaliphatic or aromatic diols and/or dicarboxylic acids. The thickness of the outer layer A is more than 0.7 &mgr;m and this makes up less than 25% by weight relative to the entire film. The Tg2 value of the polyester film is above the Tg2 value of the base layer, but below the Tg2 value of the outer layer. The film has low permeability to atmospheric oxygen and exhibits very good adhesion between the individual layers. It is particularly suitable for packaging purposes, specifically for packaging foods or other consumable items.

Abstract: A transparent, biaxially oriented polyester film is disclosed, with a base layer B which comprises at least 80% by weight of thermoplastic polyester, and with at least one intermediate layer Z, and with at least one outer layer A. The outer layer A is composed of a polymer or of a mixture of polymers which contains at least 85% by weight of ethylene 2,6-naphthalate units and up to 15% by weight of ethylene terephthalate units, and/or up to 15% by weight of units derived from cycloaliphatic or aromatic diols and/or dicarboxylic acids, and the intermediate layer Z is composed of a mixture of polymers which contains at least 3% by weight of ethylene 2,6-naphthalate units and up to 97% by weight of ethylene terephthalate units, and/or up to 97% by weight of units derived from cycloaliphatic or aromatic diols and/or dicarboxylic acids. The Tg2 value of the polyester film is above the Tg2 value of the base layer B, but below the Tg2 value of the outer layer A.

Abstract: The present invention relates to a multi-layer packaging film comprising an intermediate layer having at least one outer layer on both surfaces of the intermediate layer, and having the thickness of not more than 40 &mgr;m, said outer layer comprising a polyolefin resin, said intermediate layer comprising a polytetramethylene terephthalate resin obtained by copolymerizing polytetramethylene oxide glycol having a number-average molecular weight of 300 to 5,000 and having an intrinsic viscosity of 0.7 to 2.0, a melting point of 200 to 228° C. and a crystallization temperature of not higher than 180° C., and the thickness of said intermediate layer being 20 to 80% of the thickness of the multi-layer film.

Abstract: The application discloses a sealable biaxially oriented polyester film having a base layer B at least 80% by weight of which is composed of a thermoplastic polyester, and having two outer layers A and C, wherein the outer layer A is composed of a polymer or of a mixture of polymers which comprises at least 40% by weight of ethylene 2,6-naphthalate units and up to 60% by weight of ethylene terephthalate units and/or units from cycloaliphatic or aromatic diols and/or dicarboxylic acids, and the opposite outer layer C is sealable and has a sealing initialization temperature of from about 100 to 200° C. The film has low atmospheric oxygen transmission. It is particularly suitable for packaging applications, specifically for packaging foods and other consumable items.

Abstract: Book covers and a substantially transparent, coextruded matte, bilayer nylon film which is contact transparent to a paper stock to form a soft book cover having high scratch, abrasion and mar resistance, a soft feel and good moisture curl properties. A substantially transparent, coextruded film which has a first nylon layer attached adjacent to a second nylon layer, the first nylon layer has from about 20 weight percent to about 70 weight percent of a refractory filler based on the weight of the first nylon layer.

Abstract: A multi-layered guide wire that uses separate layers to achieve desired guide wire characteristics. Each of the layers may enhance one or more of the desired guide wire characteristics, with the combination of layers providing the desired combination of guide wire characteristics. Each of the layers may be provided over the entire guide wire, or only over selected portions of the guide wire. Further, selected layers may be co-extruded over the guide wire, which may reduce the manufacturing costs associated therewith.

Abstract: The invention relates to a three-layer, biaxially oriented polyester film which has very good electromagnetic properties compared with films of the prior art in combination with improved abrasion properties. The film is composed of at least one base layer B and outer layers A and C applied to both sides of this base layer, these outer layers having a defined number of protuberances with a defined height and having a defined gas flow in the roughness profile. The invention furthermore relates to a process for the production of the film and its use as magnetic tape film in which no backing coating is applied.

Abstract: The present invention is directed to a biaxially oriented multi-layer film which comprises: (a) a core layer comprising a syndiotactic propylene homopolymer; and (b) at least one additional layer adjacent to the core layer comprising a polymer which is an ethylene or a propylene homopolymer, ethylene copolymer or terpolymer containing comonomers of propylene and/or butene-1. Optionally, there can be a skin layer applied to the exposed surface of the outer layer. The skin layer and/or the at least one additional layer is a polyolefin selected from the group consisting of isotactic polypropylene, polyethylene, ethylene-propylene random copolymer, ethylene-propylene block copolymer or ethylene-propylene-butene-1 terpolymer.

Abstract: A compostable multilayer film includes a core layer having a first surface and a second surface, a first blocking reducing layer covering the first surface of the core layer, and a second blocking reducing layer covering the second surface of the core layer. The core layer comprises a lactic acid residue-containing polymer having a glass transition temperature (Tg) below 20° C. At least one of the first and second blocking reducing layers comprise a semicrystalline aliphatic polyester. The core layer may be peroxide modified polylactide polymer which exhibits bridging between polylactide polymer chains.

Abstract: A pneumatic tire includes a low conductive rubber portion forming at least a cap rubber portion of the tread rubber which provides a tread surface of the tire. A narrow high conductive rubber strip extends in a radial direction of the tire at a widthwise center region of the cap rubber portion, and is exposed to the tread surface to form a discharge path for allowing electrostatic charges of a vehicle body to be discharged to a road surface. An unvulcanized tread rubber for the tire is obtained by passing a high conductive unvulcanized rubber through a passage extending from an extruder unit to the back side of an extrusion orifice, to form at least part of the remaining potion of the tread rubber.

Abstract: A process for the manufacture of an environmental friendly paper from about 56% to about 80% by weight of inorganic mineral powders, about 43% to 18% by weight of polyethylene, and about 1% to 2% by weight of additives is provided. A composition for the manufacture of an environmental friendly paper, comprising about 56% to 80% by weight of inorganic mineral powders, about 43% to 18% by weight of polyethylene, and about 1% to 2% weight by additives is also disclosed.

Abstract: Multilayer laminates including films, sheets, preforms, containers and other articles having at least one wholly aromatic, amorphous, stretchable liquid crystalline polymer layer with at least one non-liquid crystalline thermoplastic polyester layer are provided as well as methods for producing and stretching the multilayer articles. The laminates are suitable for thermoforming and stretch blow molding applications and may be stretched to at least 100 percent elongation at temperatures below 200° C. and at high total draw ratios without fractures or tears. Containers suitable for food or beverage products may be produced from the laminates.

Abstract: A silicone rubber base compound for electrical wire coating such that when it is extruded using an extruding machine having a variable screw with an L/D=10 and a die with a diameter of 1 mm attached thereto at a barrel and head temperature of 70° C., the per-minute extruder output rate at a screw rotation speed of 100 rpm is not less than 1.2 times the extruder output rate at a screw rotation speed of 50 rpm, a silicone rubber composition for electrical wire coating obtained by compounding diacyl organic peroxide consisting of carbon atoms, hydrogen atoms, and oxygen atoms with the silicone rubber base compound for electrical wire coating, and a process for the production of silicone rubber coated electrical wire using the silicone rubber composition for electrical wire coating.

Abstract: Alumina-based abrasive material having at least an internal layer is provided. Preferably, the abrasive material results from co-extrusion of at least two different sols. In some preferred processing, steps to provide multiple internal layers are conducted.

Abstract: The invention relates to a method of producing a laminated packaging material including a core layer of paper or paperboard and a barrier layer applied on one side of the core layer. The invention also relates to a laminated packaging material produced according to the method, as well as a packaging container which is produced from the laminated packaging material.

Abstract: Process for die extrusion of melted polymers that reduces die lip buildup and its deleterious effects. Direct extrusion of mixed polymer pellets and filler concentrate pellets in one embodiment avoids a precompounding step and reduces the tendency of polymer and filler particles to adhere to the exit portion of the die. In other embodiments a reduced die lip radius and lower melt processing temperatures further enhance the benefits obtained. For co-extruded muitilayer film embodiments elimination of fillers and antiblock additives in skin layers add to the levels of die lip buildup reduction obtained. Hours of continuous operation without excessive die lip buildup in one arrangement have been increased from a level of 4 to 6 hours, for example, to in excess of 20 hours. Reduced product defect levels have also been attained.

Abstract: A method of producing highly oriented multilayer films comprising laminating films having at least one layer of a fluoropolymer, at least one layer of a polyolefin homopolymer or copolymer and an intermediate adhesive layer of a polyolefin having at least one functional moiety of an unsaturated carboxylic acid or anhydride thereof. With this structure the polyolefin layer allows the fluoropolymer layer to be stretched up to ten times its original length. Such a high orientation ratio for the fluoropolymer film increases the mechanical strength, toughness, and water vapor barrier properties of the film while using a thinner gauge fluoropolymer film.

Abstract: Alumina-based abrasive material having at least an internal core structure is provided. Preferably, the abrasive material results from co-extrusion of at least two different sols. In some preferred processing, steps to provide multiple internal core structures are conducted.

Abstract: The present invention relates to a floor covering that causes essentially no unpleasant odors and/or health damaging emissions and which furthermore shows no signs of discoloration by aging for a lengthy time period, as well as a method for manufacturing the floor covering.