Including A Primer Layer Patents (Class 428/353)
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Patent number: 5180615Abstract: A flexible sheet material and bags made therefrom for packaging electrostatically sensitive items such as electronic circuit boards. The sheet has a metal layer and an antistatic layer. The outer surface of the bag has a high non-conductive surface resistivity greater than or equal to 10.sup.8 ohms/square, yet the bag protects the packaged item from static voltage by preventing the capacitive coupling of the voltage through the bag to the item packaged therein.Type: GrantFiled: December 13, 1989Date of Patent: January 19, 1993Assignee: W.R. Grace & Co.-Conn.Inventor: Marvin R. Havens
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Patent number: 5175033Abstract: A flexible sheet material and bags made therefrom for packaging electrostatically sensitive items such as electronic circuit boards. The sheet has a metal layer that is adhesively laminated to an antistatic polymeric layer, the instant bag being of improved metal layer to antistatic layer adhesion. The metal outer surface of the bag has a high non-conductive surface resistivity greater than or equal to 10.sup.8 ohms/square, yet the bag protects the packaged item from static voltage by preventing the capacitive coupling of the voltage through the bag to the item packaged therein.Type: GrantFiled: June 22, 1990Date of Patent: December 29, 1992Assignee: W. R. Grace & Co.-Conn.Inventor: Marvin R. Havens
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Patent number: 5169696Abstract: A transversely tearable film and pouches made therefrom are disclosed. The transversely tearable laminate comprises a machine direction oriented linear low density polyethylene film adhesively laminated on at least one side to a sealant film, the sealant film having an Elmendorf tear in the machine direction of at least about 2 g/.mu.m, and the selection of said oriented film and said sealant film being made on the basis that:K.X>(1-Y),whereinK is an empirically determined factor which depends of the properties of the oriented film and the sealant film,X is the thickness of all layers of sealant film in micrometers,Y=(MD.sub.c)/(TD.sub.c)MD.sub.c is the Elmendorf tear strength, in the machine direction, of the oriented film, measured in grams, andTD.sub.c is the Elmendorf tear strength, in the transverse direction, of the oriented film, measured in grams.Type: GrantFiled: November 1, 1991Date of Patent: December 8, 1992Assignee: Du Pont Canada Inc.Inventors: Theodore J. Lang, Kevin Bergevin
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Patent number: 5164178Abstract: The solid granular deodorant consists of a porous granular CaSO.sub.4.2H.sub.2 O base, a portion of essential oils adsorbed on said porous granular base and microcapsules filled with another portion of the essential oils. The portion of the essential oils adsorbed on the granular base is present in an amount of from 2% to 18% by weight and the other portion of the essential oils in the microcapsules is present in an amount of from 0.5% to 4% by weight. The microcapsules are breakable by impacts, crushing or heating. This granular deodorant is packed in a sealed pouch which has micro-holes on one side covered by a removable, repositionable adhesive tape.Type: GrantFiled: June 15, 1988Date of Patent: November 17, 1992Assignee: Beta Pictoris Inc.Inventor: Hans R. Muysson
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Patent number: 5158814Abstract: A flexible metal conduit and fabrication method where a thin metal ribbon is arranged in a helix about a central axis. The ribbon defines helically extending corrugated inwardly and outwardly facing conduit surfaces formed by alternating ridges and valleys extending parallel to the ribbon edges. Ribbon edge locking structure secures abutting ribbon convolutions together and comprises first and second confronting parallel ribbon edge flanges extending at least a substantial length of the ribbon. The flanges are lapped and tightly rolled together to form a two ply spirally curved wall defining a tube whose central core has a generally circular cross sectional shape. The tube is disposed adjacent a convolution surface and extends along a helical path parallel to the abutting convolutions.Type: GrantFiled: April 4, 1991Date of Patent: October 27, 1992Assignee: Hose Master, Inc.Inventor: Sam J. Foti
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Patent number: 5135798Abstract: A multilayer, flexible transfer strip with an auxiliary carrier and a contact adhesive coating, whereby between the auxiliary carrier and the contact adhesive coating is provided a binder-containing transfer coating, which has a stronger adhesion to the contact adhesive coating than to the auxiliary carrier. The binder-containing transfer coating contains a tear-off aid in the form of a soluble cellulose derivative. On incorporating white pigments into the transfer coating, the transfer strip can be used for correcting written representations or typed characters. Correction takes place rapidly and simply and leads to the formation of a uniform coating with a sharp tear-off.Type: GrantFiled: April 12, 1991Date of Patent: August 4, 1992Assignee: Pelikan AktiengesellschaftInventors: Sigo Muschter, Ernst Kunkel, Petra Bubolz, Wolfhard Rutz
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Patent number: 5116660Abstract: A deoxidizer film for use in storage of food products or the like has a film body made of a thermoplastic resin in which a deoxidizer composition is dispersed. The film body is uni-axially or bi-axially drawn and has minute pores. The deoxidizer composition typically contains iron powder and a metal halide. The deoxidizer film can have a laminate structure in which the above-mentioned film body is laminated to a film body made of a thermoplastic resin and containing a filler which is insoluble in water or has a small solubility in water.Type: GrantFiled: September 6, 1989Date of Patent: May 26, 1992Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Toshio Komatsu, Yoshiaki Inoue
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Patent number: 5112682Abstract: A primer comprising at least one selected from the group consisting of dyes and pigments, and, optionally, at least one selected from the group consisting of an organosilicon compound represented by Formula (I): ##STR1## wherein R.sup.1 represents a monovalent hydrocarbon group; R.sup.2 represents a substituted or unsubstituted monovalent hydrocarbon group; R.sup.3 represents X-- or X-R.sup.4 --, where X represents a monovalent hydrocarbon group containing an epoxy group, etc., and R.sup.4 represents a saturated divalent hydrocarbon group; and n is an integer of 0 to 2,and a partial hydrolyzate thereof. This primer can import a good adhesion to so-called hardly adherable materials such as polyolefin plastics.Type: GrantFiled: February 8, 1989Date of Patent: May 12, 1992Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yoshio Inouye, Takeo Inoue, Toshihide Shimizu, Ichiro Kaneko
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Patent number: 5110642Abstract: This invention teaches using blends of polyisobutylene and polypropylene copolymer in the formation of single layer films and multiple layer sheet materials. The films and sheet materials are useful as flexible packaging materials. The multiple layer sheet materials may be entirely polymeric or may include layers having non-polymeric components, such as metal. The blends of polyisobutylene and polypropylene copolymer unexpectedly have the capability of being extruded through a slot die to form a film having a functionally useful mixture of its components. Thus the invention further includes methods of forming film-like layers of the blends of polyisobutylene and polypropylene copolymer.Type: GrantFiled: April 8, 1991Date of Patent: May 5, 1992Assignee: American National Can CompanyInventor: Roger P. Genske
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Patent number: 5110639Abstract: A packaging material for photosensitive materials which is a multilayer film comprising two coextruded multilayer inflation films wherein the amount of antistatic agent (wt. %) of an outer layer is more than 1.2 times greater than the antistatic agent content (wt. %) of a inner layer. In the packaging material of the invention, the necessary amount of antistatic agent to prevent static trouble bleeds out of the surface of the outer layer in a short time, and thereafter, the bleeding amount is almost constant. Therefore, the packaging material is excellent in heat sealability, appearance and touch and does not cause development problems.Type: GrantFiled: July 10, 1990Date of Patent: May 5, 1992Assignee: Fuji Photo Film Co., Ltd.Inventor: Mutsuo Akao
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Patent number: 5097949Abstract: A static shielding package is disclosed comprising an open end, a folded bottom and sealed side edges formed from a substantially rectangular transparent, flexible laminated segment of sheet material. The sheet material comprises an inner heat sealable carrier layer, an outer protective layer and a conductive layer sandwiched between said carrier layer and protective layer wherein said sheet material is folded over upon itself along a fold region to form the folded bottom of the package. The improvement comprises the addition of an auxiliary strip of static shielding material added to the package in the region of the folded bottom of the package to provide an alternative path for the conduction of electrical energy in the event of a disruption of the primary conductive layer of the package in the region of the fold area.Type: GrantFiled: March 15, 1991Date of Patent: March 24, 1992Assignee: Westvaco CorporationInventor: Franz C. Heldwein
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Patent number: 5093194Abstract: An oriented heat sealable multilayer structure. The structure comprises a substrate having a first surface and a second surface, the substrate comprising a polyolefin film; a polymeric heat sealable layer on the first surface of the substrate, the layer comprising a polymeric material selected from the group consisting of a terpolymer of ethylene, propylene and butene-1, a random copolymer of ethylene and propylene, and blends thereof; a primer coating on the second surface of the substrate; and a water vapor and gas barrier layer on the primer coating, the water vapor and gas barrier layer selected from the group consisting of a vinylidene chloride copolymer containing at least about 50% of vinylidene chloride and an interpolymer comprising a minor amount of acrylic acid, methacrylic acid or mixtures thereof and a major amount of neutral monomer esters comprising methyl acrylate, ethyl acrylate, methyl methacrylate or mixtures thereof.Type: GrantFiled: November 1, 1989Date of Patent: March 3, 1992Assignee: Mobil Oil CorporationInventors: Robert E. Touhsaent, A. Michael Nahmias, George Cretekos
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Patent number: 5079052Abstract: A laminated metal sheet having adhered to one of its major surfaces a composite co-extruded polyolefin-containing film (B) comprising a plurality of layers in the following order:(B1) an inner layer of a bonding resin which is an acid modified polyolefin resin containing carboxyl or anhydride groups,(B2) a layer of a polyamide, the thickness of the layer being not greater than 9 microns,(B3) a further layer of a bonding resin which is as defined for layer (B1), and(B4) a layer of a polyolefin.The laminates of the invention are useful for forming with containers or various components therefor.Type: GrantFiled: June 9, 1989Date of Patent: January 7, 1992Assignee: CMB Foodcan plcInventors: Peter J. Heyes, Nicholas J. Middleton
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Patent number: 5077104Abstract: The invention herein pertains to methods and materials for producing a nicotine maintenance pouch. Laminates comprising a nicotine barrier layer and a nicotine degradation agent barrier layer are disclosed. In a preferred embodiment, the nicotine barrier layer comprises a nitrile rubber modified acrylonitrile-methyl acrylate copolymer. An especially preferred nicotine barrier material comprises, by weight percent, 75% acrylonitrile, and 25% methyl acrylate with 10% butadiene (AN-MA/B). The nicotine degradation agent barrier layer is preferably aluminum foil. In an especially preferred embodiment, the laminate comprises a layer of AN-MA/B adhered to a layer of aluminum foil, which in turn is adhered to a layer of paper stock.Pouches comprising a self-sealed nicotine barrier layer and a nicotine degradation agent barrier layer are disclosed. These pouches are preferably formed from the laminates above.Type: GrantFiled: December 21, 1989Date of Patent: December 31, 1991Assignee: Alza CorporationInventors: James A. Hunt, James L. Osborne, John T. Dunn, Melinda K. Nelson, Nathan Roth
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Patent number: 5059460Abstract: A process for producing by simultaneous lamination a polymer/metal/polymer laminate, which process comprises(i) simultaneously laminating to each of the major surfaces of a metal sheet a composite polyester film (A) comprising an inner layer (A1) of a substantially non-crystalline linear polyester having a softening point (Ts-A1) below 200.degree. C. and a melting point (Tm-A1) above 150.degree. C. and below 250.degree. C. and an outer layer (A2) of a biaxially oriented linear polyester having a crystallinity greater than 30% and having a melting point (Tm-A2) above 250.degree. C., the metal sheet having been heated to a temperature T.sub.Type: GrantFiled: June 9, 1989Date of Patent: October 22, 1991Assignee: CMB Foodcan plcInventors: Peter J. Heyes, Nicholas J. Middleton
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Patent number: 5057354Abstract: A motor vehicle glazing prepared for bonding with the window frame of a motor vehicle body is provided with a profile bead and a single tear-away cord. The profile bead serves as an intermediate body between the glazing surface and an assembly adhesive. In the area coming in contact with the assembly adhesive the width of the profile bead is selected to inhibit the lateral overflow of the assembly adhesive over the profile bead during installation. A tear-away cord is placed inside the profile bead or in its immediate vicinity to shear through the profile bead when removing glazing. The profile bead itself or the adhesive bonding of the profile bead to the glazing surface is shaped so that the width of the section of profile bead to be sheared through by the tear-away cord is substantially smaller than the width of the area coming in contact with the assembly adhesive.Type: GrantFiled: October 31, 1989Date of Patent: October 15, 1991Assignee: Saint-Gobain Vitrage InternationalInventors: Heinz Kunert, Hans Ohlenforst, Gerd Cornils
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Patent number: 5049424Abstract: A fabric covered metal rail suitable for use as a top or bottom rail in a fabric Venetian blind and method for producing such a rail by first laminating a fabric strip to a metal strip and then roll forming the laminated strip into the rail.Type: GrantFiled: June 22, 1989Date of Patent: September 17, 1991Assignee: Hunter Douglas Inc.Inventors: L. Eugene Carden, Richard N. Anderson
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Patent number: 5045393Abstract: A method for providing a polyolefin resin substrate with an adhesive coating having high adhesiveness and thermal resistance comprising the following steps:1. coating the surface of said polyolefin substrate with a primer film having at least 2 hydroxy groups, and2. coating said primer film with a molten layer of moisture setting hot melt urethane adhesive composition comprising a urethane prepolymer containing at least 2 NCO radicals.Type: GrantFiled: August 16, 1989Date of Patent: September 3, 1991Assignee: National Starch and Chemical Investment Holding CorporationInventors: Shuichi Kumanoya, Makoto Yamamoto, Katsumi Sasaki, Masahiko Nishimura
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Patent number: 5045386Abstract: A pressure-sensitive film composite ideally suited for providing a graphic or decorative pattern to a plasticized polyvinyl chloride surface, comprising a polymeric film containing a pressure-sensitive adhesive on a surface thereof, the adhesive comprising at least one nitrile butadiene rubber.Type: GrantFiled: February 1, 1989Date of Patent: September 3, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventors: Lelia A. M. Stan, Naimul Karim, Georg H. Feichtmeier, Heiner Johannsen
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Patent number: 5043195Abstract: Flexible sheet materials and envelopes are described which are useful for packaging electronic components. The sheet material includes an electrically insulating film with a conductive layer on the upper surface and an antistatic layer carried by the lower surface. The antistatic layer includes a fluoroaliphatic sulfonamide polyether compound. Optionally a tie layer may be included between the film and the antistatic layer.Type: GrantFiled: October 28, 1988Date of Patent: August 27, 1991Assignee: Minnesota Mining & Manufacturing CompanyInventor: Maynard E. Skrivseth
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Patent number: 5039564Abstract: A tearing strip of the delaminating type intended for attachment to opposite insides of a package.The strip has such a layer structure that, relative the inside of the package, it has a melted-together seal while internally the strip has layers which are not fully melted together.The strip comprises a central, strong layer and a first and second layer arrangement.The first layer arrangement has a well reproducable, high seal strength relative the central layer. However, the second layer arrangement is "peelable" relative the first layer arrangements or more likely internally between two layers. In contrary the second layer arrangement has a well reproducable, high sealing strength relative the inside of the package.Type: GrantFiled: July 5, 1989Date of Patent: August 13, 1991Assignee: AB Akerlund & RausingInventor: Bengt Persson
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Patent number: 5026600Abstract: A packaging material for photosensitive materials which comprises packaging material which comprises a coextruded multilayer light-shielding film comprising an ethylene copolymer resin layer containing more than 30 wt. % of ethylene copolymer resin and an antioxidant, a thermoplastic resin layer having a melting point higher than said ethylene copolymer resin layer, and an adhesive thermoplastic resin layer containing a conductive material disposed between said ethylene copolymer resin layer and said thermoplastic resin layer.In the packaging material of the invention, the ethylene copolymer resin layer improves physical strength such as tear strength and heat sealing properties, and the thermoplastic resin layer makes heat sealing easy due to its heat resistance and improves bursting strength. The adhesive thermoplastic resin layer secures antistatic property and light-shielding, and it also improves the bonding strength between the ethylene copolymer resin layer and the thermoplastic resin layer.Type: GrantFiled: August 22, 1988Date of Patent: June 25, 1991Assignee: Fuji Photo Film Co., Ltd.Inventor: Mutsuo Akao
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Patent number: 5021293Abstract: A composite material useful for controlled generation of heat by absorption of microwave energy is disclosed. The material comprises a dielectric substrate, e.g., polyethylene terephthalate film, coated with a mixture of an electrically conductive metal or metal alloy in flake form in a thermoplastic dielectric matrix, e.g., a polyester copolymer. In a preferred embodiment, the coating of flake/thermoplastic is applied so as to yield an isotropic coating with good heating performance reproducibility. The use of circular flakes with flat surfaces and smooth edges contributes substantially to good heating performance reproducibility.Type: GrantFiled: August 28, 1989Date of Patent: June 4, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Hua-Feng Huang, Donald E. Plorde
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Patent number: 5017430Abstract: An oriented heat sealable multilayer film structure having a polyolefin film substrate, a thermoplastic primer coating on the substrate and a heat sealable acrylic or polyvinylidene coating applied to at least one primer coated surface. The primer has a glass transition of from about 0.degree. to about 50.degree. C.Type: GrantFiled: November 25, 1988Date of Patent: May 21, 1991Assignee: Mobil Oil CorporationInventors: Shaw-Chang Chu, Kevin A. Kirk
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Patent number: 4996088Abstract: An improved shelf life composition useful as adhesives and, especially, pressure sensitive adhesives is made by mixing an acrylic composition with a catalyst of the tin type and a non-reactive silicone composition essentially free of hydroxyl and hydrogens on the silicon atoms and of the formula shown hereinafter.Type: GrantFiled: September 26, 1988Date of Patent: February 26, 1991Assignee: Morgan Adhesives Co.Inventors: Gerald H. Knittel, Stanley D. Smith, Richard C. Spector, Jack M. McClintock
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Patent number: 4992331Abstract: Novel flame-retardant conformable adhesive tapes consisting essentially of: (1) a water-impermeable chlorinated polyethylene backing layer from about 1 to 3 mils thick; (2) an evenly tearable synthetic fiber cloth or scrim; (3) a flame-retardant adhesive layer, preferably a rubber-based adhesive; and (4) a thin tie coat layer between the backing and the scrim which, when applied as a molten mass, at least partially fills the interstices between the fibers of the scrim so as to provide surface contact with the underlying adhesive layer, the tie coat providing a strong bond at both the tie coat/backing interface and the tie coat/scrim and adhesive interfaces, thereby providing a laminar product possessing the desired anchorage and structural stability and integrity.The tape is particularly useful in wrapping irregular surfaces, e.g. as a wire harness wrap, where high conformability is essential to good adhesive contact.Type: GrantFiled: September 30, 1988Date of Patent: February 12, 1991Assignee: The Kendall CompanyInventor: Leonard D. DeCoste, Jr.
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Patent number: 4990381Abstract: Multi-layer laminated sandwich sheet, comprising at least two layers which are superimposed and stuck together by welding or gluing, one layer being constituted by a material impervious to the active volatile agents of a perfuming or deodorizing composition, of an aroma or of an insecticidal or bactericidal substance, and the other layer being composed of a film made from a polymer or a copolymer with a polyolefin base or from a copolymer of polyamide and polyether, which film contains, in dispersed and homogeneous phase, a base constituted by a perfuming or deodorizing composition, an aroma or an insecticidal or bactericidal substance, and packaging utilizing the said sheet.Type: GrantFiled: July 18, 1988Date of Patent: February 5, 1991Assignee: Firmenich S.A.Inventor: Gunter Holzner
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Patent number: 4985302Abstract: A removable self-adhesive sheet with a writable surface, for application to written surfaces to and from which it can be repeatedly applied and removed a large number of times always maintaining good adhesion but without compromising the written surface.Type: GrantFiled: June 3, 1988Date of Patent: January 15, 1991Assignee: Incas International Carbon Solvent S.p.A.Inventors: Guido Sala, Ivano Zucchiatti
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Patent number: 4972058Abstract: The present invention provides a composite material for generation of heat by absorption of microwave energy comprising a porous dielectric substrate and a coating comprising a thermoplastic dielectric matrix and flakes of a micorwave susceptive material distributed within the matrix, said flakes having an aspect ratio of at least about 10, a generally planar, plate-like shape, with a thickness of about 0.1 to about 1.0 micrometers, a transverse dimension of about 1 to about 50 micrometers, and angular edges. The composite material exhibits decreased microwave transmission as a function of previously applied pressure.Type: GrantFiled: December 7, 1989Date of Patent: November 20, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Kenneth A. Benson, Dan S. C. Fong
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Patent number: 4966795Abstract: Sheet structures wherein the composition of one layer comprises a first component of a polypropylene, a second component of an ethylene-based copolymer, and a third component which provides some properties representative of elastomeric polymers. The invention further contemplates packages made from the sheet structures incorporating the recited compositions.Type: GrantFiled: May 5, 1988Date of Patent: October 30, 1990Assignee: American National Can CompanyInventors: Roger P. Genske, Yong J. Kim
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Patent number: 4960625Abstract: A web-like element for filling limited space comprises a series of successive gas pockets formed by division of a continuous flexible tubular casing. Each gas pocket contains a given gas volume which does not fill the receptacle volume of the gas pocket completely. The gas may comprise air or nitrogen gas enclosed in a casing of polyethylene. The web-like element comprising gas cushions has great formability for mating up to the walls of the space and adjacent packed parts of the elements, as well as permitting a high degree of filling in the space. The element may be used as buoyancy filling for floating bodies or as insulating filling for spaces in buildings.Type: GrantFiled: January 13, 1989Date of Patent: October 2, 1990Inventor: Gosta Rosendahl
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Patent number: 4956210Abstract: The present disclosure is directed to a flexible delamination-resistant structure especially adapted for use in food packaging, such as in the construction of a retortable pouch. The structure comprises at least two adjacent films, at least one of which is aluminum, having interposed therebetween, as an adhesive for said films, a partially hydrolyzed ethylene-vinyl acetate copolymer obtained from the hydrolysis of from about 60 percent to about 80 percent of the vinyl acetate groups of an ethylene-vinyl acetate copolymer containing from about 30 percent to about 60 percent by weight of interpolymerized vinyl acetate.Type: GrantFiled: December 7, 1988Date of Patent: September 11, 1990Assignee: Quantum Chemical CorporationInventors: John M. Hoyt, Joseph Fischer
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Patent number: 4948450Abstract: An adhesive label comprising, in order, a printing carrier, a primer on the back of the printing carrier, an adhesion layer, a covering layer, and an optional adhesive-repellent layer between the adhesion layer and the cover layer. The primer comprises isocyanate-terminated compounds, particularly isocyanate-terminated polyurethanes. The adhesive label is made by applying the adhesion layer to the covering layer or to the optional adhesive-repellent layer on the covering layer, and combining the adhesion layer and a stratum made from the printing carrier and the primer by applying the adhesion layer onto the primer.Type: GrantFiled: October 6, 1988Date of Patent: August 14, 1990Assignee: Jackstadt GmbHInventors: Hans-Ulrich Hurter, Dieter Frenkler
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Patent number: 4948663Abstract: An adhesive label comprising, in order, a printing carrier, a primer on the back of the printing carrier, an adhesion layer, a covering layer, and an optional adhesive-repellent layer between the adhesion layer and the cover layer. The primer comprises isocyanate-terminated compounds, particularly isocyanate-terminated polyurethanes. The adhesive label is made by applying the adhesion layer to the covering layer or to the optional adhesive-repellent layer on the covering layer, and combining the adhesion layer and a stratum made from the printing carrier and the primer by applying the adhesion layer onto the primer.Type: GrantFiled: August 6, 1987Date of Patent: August 14, 1990Assignee: Jackstadt GmbHInventors: Hans-Ulrich Hurter, Dieter Frenkler
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Patent number: 4944990Abstract: A multi-layer heat sealable structure comprising a substrate including a white opaque polyolefin film, which is preferably cavitated. A second layer is coextruded on at least one surface of the substrate. The second layer includes a heat sealable homopolymer, copolymer, terpolymer or blend thereof. A primer coating is disposed on at least one surface of the second layer. A heat sealable layer is disposed on the primer coating. The heat sealable layer includes a vinylidene chloride copolymer containing at least 50% by weight of vinylidene chloride.A method for producing the present multi-layer heat sealable structure is also disclosed.Type: GrantFiled: June 16, 1988Date of Patent: July 31, 1990Assignee: Mobil Oil CorporationInventors: Leland L. Liu, Patricia A. Cyr
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Patent number: 4943460Abstract: Processes for treating polymeric surfaces to produce smooth, durable, slippery coatings which are able to withstand the rigors of sterilization and, long term exposure to human blood and other bodily fluids without substantial loss of their slipperiness.Type: GrantFiled: February 13, 1989Date of Patent: July 24, 1990Assignee: Snyder Laboratories, Inc.Inventors: Richard A. Markle, Phyllis L. Brusky, John H. Baker
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Patent number: 4937113Abstract: Disclosed is a multiple-layer film having a support film, a first double film laminated thereto, which is formed from a single-ply blown tube collapsed by atmospheric pressure. The support film and the double film laminated thereto are perforated with pinholes. On the side opposite the support film the double film is laminated to a barrier film and the latter is laminated to a weldable layer of film.Type: GrantFiled: March 16, 1988Date of Patent: June 26, 1990Assignee: Helio Folien GmbHInventor: Herbert Engelsberger
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Patent number: 4927689Abstract: A gas barrier structure is disclosed which comprises a base synthetic thermoplastic polymeric layer, e.g. nylon, polyethylene, having two coatings on one side of the base layer. The first coating is a solvent-based urethane primer and the second coating comprises a polyvinyl alcohol gas barrier material. The primer is present in the range of 0.3 to 3.0 g/m.sup.2 and the polyvinyl alcohol is present in an amount of up to 2.0 g/m.sup.2. The polyvinyl alcohol is deposited from solution or dispersion.Type: GrantFiled: July 7, 1987Date of Patent: May 22, 1990Assignee: Du pont Canada Inc.Inventor: Stan J. Markiewicz
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Patent number: 4923729Abstract: A method for increasing heat dissipation from the smolder or open flame site of an upholstered article by interposing a fire barrier material between the outer upholstery fabric and the filler or padding materials. The fire barrier material is formed by coating a fibrous substance, such as glass fibers, carbon fibers, and the like with a latex containing a finely divided heat conductive metal.Type: GrantFiled: November 14, 1988Date of Patent: May 8, 1990Assignee: Springs Industries, Inc.Inventors: Rick A. Porter, Hans R. Hoernle
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Patent number: 4919994Abstract: A dry transfer graphics article and methods of preparation and use thereof are provided. The article is self-weeding to transfer fine graphic images without the use of detackifying radiation, solvents, etc. One of the elements of the article is a carrier having a surface which is compatible with an adhesive having a low work to fracture. The article further comprises a graphic pattern formed on the adhesive.Type: GrantFiled: March 20, 1987Date of Patent: April 24, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Joseph H. Incremona, Richard H. Lundeen
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Patent number: 4906497Abstract: A hot-melt adhesive comprising at least one component which under the action of microwaves on the dry hot-melt adhesive leads to an increased heating-up rate compared with a corresponding dry hot-melt adhesive without said component contains with a view to universal application with highest possible activatability and constant property characteristic as microwave-activatable component electrically conductive substances with an electrical conductivity higher than that of the dry hot-melt adhesive without said component. Provided as electrically conductive substances are in particular carbon fibres, carbon black, graphite, antistatic agents and metal particles, either on their own or in mixtures adapted to the use. Hot-melt adhesive coatings or self-supporting hot-melt adhesive films having these additives have a heating-up rate by microwaves which is greater by a factor of up to 400 than that of conventional microwave-activatable adhesives.Type: GrantFiled: November 4, 1988Date of Patent: March 6, 1990Assignee: Uzin-Werk Georg Utz GmbH & Co. KGInventors: Horst D. Hellmann, Roland Krieger
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Patent number: 4906494Abstract: An antistatic sheet material and package formed therefrom is provided. The laminated sheet material includes a first inner layer which is preferably a coextruded film having a polyolefin ply and second copolymer ply of ethylene-acrylic acid copolymer, ethylene vinyl acetate copolymer, or blends thereof, a second intermediate layer such as a polyester film having an electrically conductive material thereon, and an outer layer of an antistatic material. The laminate may be formed by hot roll lamination or an adhesive may be used between the first and second layers.Type: GrantFiled: November 30, 1988Date of Patent: March 6, 1990Assignee: The Dow Chemical CompanyInventors: Michael A. Babinec, Charles L. Mott, David C. Burdeaux
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Patent number: 4898848Abstract: A thermosensitive recording label includes a thermosensitive color-forming layer disposed on one side of a substrate for creating a display of images when the temperature of selected portions of the thermosensitive color-forming layer are heated above an activated temperature. A remoistenable type adhesive is disposed in viscous form on an opposite side of the substrate and dried thereon without heating the thermosensitive color-forming layer above its activation temperature. The remoistenable adhesive does not include any organic solvents or substances which may cause bleed-through to the substrate and into the color-forming layer. Therefore, a barrier layer is not necessary therebetween. In addition, a protective, or barrier layer, may be disposed on top of the thermosensitive color-forming layer to prevent fading or discoloration by exterior contaminants.Type: GrantFiled: June 20, 1988Date of Patent: February 6, 1990Assignee: Ricoh Electronics, Inc.Inventor: Tomoo Shibata
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Patent number: 4894264Abstract: A single-sheet gusset bag for photographic photosensitive materials formed of a laminated sheet comprising a metal foil layer or metallized flexible sheet layer, a water-absorptive, and heat-resistant flexible sheet layer which resists dust formation laminated on the outside of said metal foil layer or metallized flexible sheet layer, and a light-shielding polyolefin resin film layer containing at least linear low density polyethylene resin, carbon black and an antioxidant and having a thickness of more than 50 .mu.m laminated on the inside of said metal foil layer or metallized flexible sheet layer, and the bottom seal portion is turned or rolled and fixed by an adhesive or adhesive tape.Type: GrantFiled: April 26, 1988Date of Patent: January 16, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Mutsuo Akao, Koji Inoue, Hiroyuki Osanai
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Patent number: 4883694Abstract: High performance polymer systems based on water dispersed polyurethanes obtained from the reaction of NCO terminated prepolymers with a peroxide compound containing at least one active hydrogen atom, methods of making such polymer systems and their use as hydrolytically stable flexible substrate bonding agents are disclosed. Flexible packages, e.g., retortable laminate pouches, are formed by bonding together sections of films, foils or like flexible substrates using such adhesives.Type: GrantFiled: March 13, 1989Date of Patent: November 28, 1989Assignee: Century Adhesives Corp.Inventor: Balasubramaniam Ramalingam
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Patent number: 4876129Abstract: A packaging material for photographic photosensitive materials which comprises a simultaneously coextruded multiple layer light-shielding film comprising the inner layer being a heat-sealing layer containing 30 to 99.49 wt. % of linear low density polyethylene resin, 0.5 to 10 wt. % of carbon black and 0.01 to 1 wt. % of a lubricant, having 0.12 to 0.37 of a statical friction coefficient and the outer layer formed of a thermoplastic resin having 0.19 or more of a statical friction coefficient which is greater than the above inner layer by 0.05 or more, and having 10 g/15 mm width or more of the binding strength between each layer of the coextruded multiple layer film. This coextruded multiple layer film may contain an intermediate layer formed of a thermoplastic resin.In the packaging material of the invention, the inner layer is excellent in light-shielding, insertion of products, antiblocking, antistatic property for frictional electrification, moisture proofness and gas barrier.Type: GrantFiled: June 22, 1987Date of Patent: October 24, 1989Assignee: Fuji Photo Film Co., Ltd.Inventor: Mutsuo Akao
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Patent number: 4873140Abstract: A coated article with a substrate having a low surface energy coating thereon, said coating comprising an in situ polymerized monofunctional poly(perfluoropropyleneoxy) acrylate or methacrylate oligomer. The oligomer has a poly(perfluoropropyleneoxy) segment, [CF(CF.sub.3)CF.sub.2 O].sub.d, which has a number average molecular weight of about 800 to 25,000.Type: GrantFiled: April 27, 1988Date of Patent: October 10, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventor: Daniel K. McIntyre
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Patent number: 4861632Abstract: A laminated packaging material from which package type containers are fabricated for storing or transporting a variety of products ranging from dry food-stuffs to electronic equipment where maintenance of a dry environment is a requirement, comprising an outer imperforate water impervious layer, a middle layer of absorbent material and an inner perforated moisture impervious layer.Type: GrantFiled: April 19, 1988Date of Patent: August 29, 1989Inventor: Michael A. Caggiano
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Patent number: 4857370Abstract: A heat-recoverable article suitable for enclosing a telecommunications cable splice comprises a recoverable fabric cover and a strengthening layer laminated to a surface of the fabric cover.Type: GrantFiled: September 4, 1987Date of Patent: August 15, 1989Assignee: Raychem CorporationInventors: Noel M. M. Overbergh, Jan L. M. F. G. Vansant
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Patent number: 4852732Abstract: A package for photoresist material, particularly a dry resist, is substantially impermeable to water vapor, thereby preventing humidity-related effects which adversely influence the processability of the photoresist. The package can comprise a film tubing, the ends of which are closed by welding or gluing, into which a photoresist roll is placed. As the material for the film tubing, a composite material can be used which is formed of a polyester film as the support film, to which an aluminum foil is laminated or which is vacuum-metallized with aluminum and a polyethylene film laminated on top. A tinplate container can also be used as a package, the container being closed by soldering after placing the photoresist material inside the container. These packages generally have a permeability to water vapor of less than 0.01 gram of water vapor per square meter per day, at a humidity gradient of 97% and an ambient temperature of 23.degree. C.Type: GrantFiled: July 3, 1986Date of Patent: August 1, 1989Assignee: Hoechst AktiengesellschaftInventors: Hans Wilski, Hermann Schmidt