Cellulosic Is Paper Patents (Class 428/486)
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Patent number: 4596338Abstract: A laminated air permeable container cap lining and sealing material comprising layers of pulp, aluminum foil, paper, wax, paper and air permeable heat sealing material.Type: GrantFiled: July 8, 1985Date of Patent: June 24, 1986Inventor: Bahjat Yousif
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Patent number: 4581266Abstract: An improved release coating for heat transferable laminates wherein an ink design layer is transferred from a carrier web onto an article such as a plastic or glass container upon application of heat and pressure. The improved release coating transfers with the ink design layer and forms an optically clear protective coating over the transferred ink design layer. The transferred release coating upon resolidification has an exceedingly high optical clarity, with no hazing, spotting, or halo discernible over the transferred ink design layer. The improved release coating incorporates a tackifying resin in a wax base. The wax base includes a montan wax and a crystalline wax such as paraffin wax. The wax base may also include a microcrystalline wax component. The preferred tackifying resin is selected from the polyterpene class.Type: GrantFiled: March 4, 1985Date of Patent: April 8, 1986Assignee: Dennison Manufacturing CompanyInventor: Frank A. Magnotta
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Patent number: 4567087Abstract: The scuff resistance of high-pressure laminated plastic is improved by incorporating in or very near the surface thereof, finely divided polyethylene wax having a particle size of about 1-25 microns and a melting point of preferably 220.degree.-230.degree. F. The wax is incorporated as part of an abrasion-resistant coating mixture applied to the face of an unimpregnated decor paper sheet in an ultra-thin layer, which layer is dried at a temperature below the wax melting point and then impregnated with conventional melamine-formaldehyde resin. The impregnated sheet is placed onto a sheet of convention phenolic resin impregnated core sheets and consolidated in the conventional way under heat and pressure. During consolidation, the wax particles "bloom", or migrate to the surface. The finished laminate surface has greatly improved scuff resistance.Type: GrantFiled: June 28, 1983Date of Patent: January 28, 1986Assignee: Nevamar CorporationInventors: Robin D. O'Dell, Israel S. Ungar, Herbert I. Scher
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Patent number: 4557964Abstract: An improved release coating for heat transferable laminates wherein an ink design layer is transferred from a carrier web onto an article such as a plastic or glass container upon application of heat and pressure. The improved release coating transfers with the ink design layer and forms an optically clear protective coating over the transferred ink design layer. The transferred release coating upon resolidification has an exceedingly high optical clarity, with no hazing, spotting, or halo discernible over the transferred ink design layer. The improved release coating incorporates a tackifying resin in a wax base. The wax base includes a montan wax and a crystalline wax such as paraffin wax. The wax base may also include a microcrystalline wax component. The tackifying resin is a transparent hydrogenated hydrocarbon resin.Type: GrantFiled: June 29, 1984Date of Patent: December 10, 1985Assignee: Dennison Manufacturing CompanyInventor: Frank A. Magnotta
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Patent number: 4532170Abstract: The scuff resistance of a high-pressure laminate is improved by incorporating in or very near the surface thereof, finely divided polyethylene wax preferably having a particle size of about 1-25 microns and a melting point of 220.degree.-230.degree. F. The wax is incorporated as part of a coating mixture applied to the face of an unimpregnated decor paper sheet in an ultra-thin layer, which layer is dried at a temperature below the wax melting point and then impregnated with conventional melamine-formaldehyde resin. The impregnated sheet is placed onto a sheet of convention phenolic resin impregnated core sheets and consolidated in the conventional way under heat and pressure. During consolidation, the wax particles "bloom", or migrate to the surface. The finished laminate surface has greatly improved scuff resistance.Type: GrantFiled: July 25, 1984Date of Patent: July 30, 1985Assignee: Nevamar CorporationInventors: Robin D. O'Dell, Israel S. Ungar, Herbert I. Scher
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Patent number: 4511611Abstract: The present invention relates to improved liner constructions, and accordingly provides a cable sleeve liner capable in use of being wrapped around a cable splice and preferably having sufficient rigidity to provide an inner support for a heat-recoverable sleeve to be shrunk thereover, the liner comprising a laminate having at least one layer of fibrous sheet material and a metal layer which is substantially impermeable to moisture vapor and has one of its major surfaces facing away from all fibrous sheet layers which may be present. Preferably the fibrous layer(s) is or are arranged between the metal layer and a microperforated first layer of flexible polymeric film material which is permeable to gases or vapors generated within the laminate during recovery of the sleeve.Type: GrantFiled: December 20, 1983Date of Patent: April 16, 1985Assignee: N.V. Raychem S.A.Inventor: Marc F. L. Moisson
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Patent number: 4503123Abstract: Tamper-resistant inner seals that bond firmly to the lips of lidded and capped glass and plastic containers incorporate an aluminum foil having a heat-sealable adhesive that is a blend of an acrylate polymer and a vinyl polymer. HCl scavengers, plasticizers, and PVC heat stabilizers are preferably included.Type: GrantFiled: August 22, 1983Date of Patent: March 5, 1985Assignee: Minnesota Mining and Manufacturing CompanyInventor: David T. Ou-Yang
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Patent number: 4499137Abstract: The scuff resistance of a high-pressure laminate is improved by incorporating in or very near the surface thereof, finely divided polyethylene wax preferably having a particle size of about 1-25 microns and a melting point of 220.degree.-230.degree. F. The wax is incorporated as part of a coating mixture applied to the face of an unimpregnated decor paper sheet in an ultra-thin layer, which layer is dried at a temperature below the wax melting point and then impregnated with conventional melamine-formaldehyde resin. The impregnated sheet is placed onto a sheet of convention phenolic resin impregnated core sheets and consolidated in the conventional way under heat and pressure. During consolidation, the wax particles "bloom", or migrate to the surface. The finished laminate surface has greatly improved scuff resistance.Type: GrantFiled: August 9, 1983Date of Patent: February 12, 1985Assignee: Nevamar CorporationInventors: Robin D. O'Dell, Israel S. Ungar, Herbert I. Scher
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Patent number: 4469749Abstract: Metalized recording papers contain, located on a paper web, a firmly adhering varnish coating in which mineral fillers and/or pigments combined with wax particles are embedded and the external surface of the varnish coating is covered with a metal layer, preferably an aluminum layer obtained by vacuum evaporation.Type: GrantFiled: September 27, 1982Date of Patent: September 4, 1984Assignee: BASF Farben & Fasern AGInventor: Gunther Schwarz
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Patent number: 4457964Abstract: A non-slip place mat is disclosed which comprises a web such as a paper sheet, and a composition coating comprising a blend of water, a water-soluble salt, a wax and a polymeric material, which both coats and impregnates the web, e.g. the paper sheet, whereby said sheet is rendered substantially hydrophobic and it and items placed on it are rendered substantially slip-resistant when resting on a tray or table which may be subject to sudden movement. The non-slip place mat is particularly useful for airline serving trays. The present place mat is characterized by the provision of a generally rectangular planar flexible web, which is indented along two opposed edges. The web is multi-layered, i.e. coated, and the four corners of the web are rounded off, so that each corner is defined by a curved periphery. A plurality of place mats in a roll and arrayed in tandem, i.e.Type: GrantFiled: May 28, 1982Date of Patent: July 3, 1984Inventor: Bernard Kaminstein
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Patent number: 4456649Abstract: This invention relates to holt melt adhesives for use in coating and/or laminating paper. Conventional hot melt adhesives used to manufacture a coated or laminated product with good vapor barrier characteristics are based on ingredients compounded with significantly lower proportions of inert low cost filler materials. The present invention provides a hot melt adhesive/coating blend which not only provides a moisture vapor barrier and/or bonding but also significantly reduces the quantity of more expensive ingredients through the use of a large quantity of a lower cost ultra fine ground inert inorganic filler material and a low cost modifying hydrocarbon resin. The blend or composition consists essentially of, in parts by weight, up to about 25 parts of a hi melt point paraffin wax, 10-30 parts of a modifying hydrocarbon resin, 1-20 parts of an elastomeric copolymer, and 20-85 parts of an inert inorganic filler material.Type: GrantFiled: March 15, 1982Date of Patent: June 26, 1984Assignee: Manville Service CorporationInventor: Wayne C. Clarke
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Patent number: 4444808Abstract: A stencil paper for mimeography is disclosed. The paper is comprised of a porous base which is permeable to mimeographic ink, having thereon a heat-sensitive layer of a material that is solid at ordinary temperatures but which liquifies upon heating. A process for making a stencil is also disclosed, which comprises placing the stencil paper in contact with a receiving medium and selectively heating the stencil paper to liquify portions of the heat-sensitive layer, and allowing the liquified portions of the heat-sensitive layer to transfer to the receiving medium.Type: GrantFiled: September 7, 1982Date of Patent: April 24, 1984Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshiki Kikuchi, Haruhiko Moriguchi, Takashi Ohmori, Katsuo Makino
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Patent number: 4427726Abstract: A roll of convoluted crepe paper, thin plastic foil or like web material has an outer side which is provided with a continuous coat of adhesive, transversely extending uniformly spaced weakened portions in the form of perforations or slits, and layers of a material which does not adhere to the adhesive. Such layers are applied to the inner side of the web so that they flank the weakened portions and allow for rapid engagement of the leader of the web by two fingers when the user wishes to remove one or more sections or panels between neighboring weakened portions. The roll can be used for the cleaning of garments or for analogous purposes. The length of each layer, as considered in the longitudinal direction of the web, is a small fraction, preferably less than one-third, of the distance between two neighboring weakened portions.Type: GrantFiled: March 11, 1982Date of Patent: January 24, 1984Assignee: Gebrauchs Gerate GmbHInventor: Emil Wolfrum
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Patent number: 4404252Abstract: A waferboard having at least one surface rendered water resistant and stabilized against wafer loss is disclosed. In the past heavy paper overlays have been used on panel surfaces. However, these paper overlays are specially treated non-porous paper and generally have to be specially applied by the addition of a glue. The waferboard of the present invention is formed of wood wafers bonded together in a hot press with adhesive resin and wax, and having a layer of porous paper bonded in the hot press to at least one surface of the waferboard. In one embodiment, the contours of the wood wafers on the surface of the waferboard are transmitted through the layer of porous paper.Type: GrantFiled: September 16, 1981Date of Patent: September 13, 1983Assignee: MacMillan Bloedel LimitedInventors: Bernard H. Hetzler, Hugh V. Martin
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Patent number: 4380565Abstract: An improved wax-coated paper is produced by coating a paper or paperboard substrate with a mixture of (A) a fluorinated organic phosphate compound; and (B) a poly(oxypropylene)poly(oxyethylene) block copolymer surfactant. The coated paper is thereafter impregnated with wax. Wax penetration into the paper surface layer is eliminated to provide a more economical product of improved appearance.Type: GrantFiled: January 8, 1982Date of Patent: April 19, 1983Assignee: Champion International CorporationInventor: Paul L. Krankkala
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Patent number: 4380686Abstract: The present invention relates to improved liner constructions, and accordingly provides a cable sleeve liner capable in use of being wrapped around a cable splice and preferably having sufficient rigidity to provide an inner support for a heat-recoverable sleeve to be shrunk thereover, the liner comprising a laminate having at least one layer of fibrous sheet material and a metal layer which is substantially impermeable to moisture vapor and has one of its major surfaces facing away from all fibrous sheet layers which may be present. Preferably the fibrous layer(s) is or are arranged between the metal layer and a microperforated first layer of flexible polymeric film material which is permeable to gases or vapors generated within the laminate during recovery of the sleeve.Type: GrantFiled: November 16, 1979Date of Patent: April 19, 1983Assignee: N.V. Raychem S.A.Inventor: Marc F. L. Moisson
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Patent number: 4377649Abstract: A wax composition has water repellent and adhesive properties, is cheap and has wide application in the manufacture and treatment of corrugated paperboard, fibreboard, particle board and other cellulosic materials. The liquid composition comprises 1-50 wt % of a wax, 1-30 wt % of a starch and 1-50 wt % of a formaldehyde based resin.Type: GrantFiled: July 22, 1981Date of Patent: March 22, 1983Assignee: K. H. Freeman Pty. Ltd.Inventors: Nevin J. Sweeney, Kenneth C. Seale
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Patent number: 4350736Abstract: A method of surface treatment for plaster articles to improve wear and water resistance is disclosed. The method includes the step of forming the article, allowing the article to set, drying to remove excess water, applying a coat of substantially molten Candelilla wax onto an exterior surface of said article, maintaining said wax at a temperature of no less than 155.degree. F. (68.degree. C.) for sufficient period of time to allow said wax to substantially fill exterior pores and irregularities, and cooling said article to solidify the wax. Also disclosed is a wear resistant and water repellent plaster article comprising a formed plaster article having an exterior surface portion thereof coated with a thin layer of Candelilla wax, said coated surface portion providing a substantially water impregnable barrier and providing enhanced wear resistance.Type: GrantFiled: July 14, 1980Date of Patent: September 21, 1982Assignee: United States Gypsum CompanyInventor: William S. Reily
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Patent number: 4326006Abstract: A place mat is disclosed which comprises a paper sheet and a composition coating comprising a blend of water, a water soluable salt, a wax and a polymeric material which both coats and impregnates the paper sheet, whereby said sheet is rendered substantially hydrophobic and it and items placed on it are rendered substantially slip resistant when resting on a tray or table which may be subject to sudden movement. The non-slip place mat is particularly useful for airline serving trays.Type: GrantFiled: February 5, 1981Date of Patent: April 20, 1982Inventor: Bernard Kaminstein
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Patent number: 4322467Abstract: There has been provided a method for manufacture of decals wherein the decal is printed with an offset rotogravure process utilizing solventless thermoplastic inks. By controlling the temperatures of the gravure rolls, the offset rolls and the back-up rolls, a continuous process is maintained which is capable of printing all layers of a decal without intermediate drying steps. The decal produced and claimed is, in a preferred embodiment, a ceramic heat release decal especially suited for the manufacture of decorated tableware.Type: GrantFiled: September 8, 1980Date of Patent: March 30, 1982Assignee: Corning Glass WorksInventors: Kim P. Heimbach, Ronald E. Johnson
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Patent number: 4312925Abstract: This invention, improved the means of making the ointment or the emulsion and others which traditionally used for Burn and Frostbite, is for a new method of making the burn and frostbite plaster and it provides with the most safety.Type: GrantFiled: October 23, 1979Date of Patent: January 26, 1982Inventor: Bae Y. Lee
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Patent number: 4308633Abstract: A wax applicator laminate for transfering wax compounds to a surface, the wax applicator laminate comprising a carrier sheet being substantially impervious to the passage of melted wax therethrough and being less adherent to solidified wax on a first surface thereof, and a layer comprising solidified wax which is adhered to the second surface of the carrier sheet. In the method of applying a coating of wax to a surface, the carrier sheet is heated to melt the solidified wax compound and to deposit a coating of wax on the surface.Type: GrantFiled: July 2, 1979Date of Patent: January 5, 1982Inventors: Phillip L. Van Huffel, Alex A. Bodner
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Patent number: 4292366Abstract: A machine degradable reinforced paper barrier material embodies at least two laminar sheets of paper in face-to-face relationship with a plurality of reinforcing strands of repulpable paper therebetween. The sheets are secured to each other and to the reinforcing strands by an adherer.Type: GrantFiled: February 28, 1980Date of Patent: September 29, 1981Inventor: Cyrus B. Fulton, Jr.
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Patent number: 4282274Abstract: Processes and compositions are described for the use in foodstuff flavor and aroma and perfume and perfumed article aroma augmenting, modifying, altering and enhancing compositions and as foodstuff, chewing gum, toothpaste, medicinal product, perfume and perfumed article aroma imparting materials of specific isomer and isomer mixtures of 2- and 3-cyclotetradecen-1-ones having the structures: ##STR1## or mixtures of same or mixtures of such 2- and 3-cyclotetradecen-1-ones with cyclotetradecanone having the structure: or cyclododecanone having the structure: ##STR2## Addition of said 2- and 3-cyclotetradecen-1-ones or mixtures is indicated to produce:(a) In food flavorings, a sweet, brown sugar and musky aroma and sweet and musky flavor characteristics (useful for flavor augmentation or enhancement in pear, blackberry, apricot and peach flavors and as a bitterness depressant for such foodstuffs, flavor adjuvants and beverages as black coffee; and(b) In perfumes and perfumed articles, a sweet, musk aroma and exaType: GrantFiled: June 27, 1979Date of Patent: August 4, 1981Assignee: International Flavors & Fragrances Inc.Inventors: Braja D. Mookherjee, Robert W. Trenkle, Manfred H. Vock, Domenick Luccarelli, Jr., Frederick L. Schmitt, Gilbert Stork, Timothy MacDonald, Arthur L. Lieberman
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Patent number: 4265976Abstract: This invention provides an ultraviolet radiation-curable coating composition which after curing has utility as a moisture barrier film for the protection of substrates such as paper and cardboard.Illustrative of the invention radiation-curable composition is a blend of components comprising (1) chlorinated rubber, (2) chlorinated paraffin; (3) vinyl acetate; (4) trimethylolpropane triacrylate; (5) photoinitiator; and (6) heat and light stabilizer for the chlorocarbon components. The invention composition cures as a substantially 100 percent solids system within one second at room temperature when exposed to ultraviolet radiation.Type: GrantFiled: September 17, 1979Date of Patent: May 5, 1981Assignee: Celanese CorporationInventor: Michael T. Nowak
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Patent number: 4262935Abstract: A donor material for carbonless copying by contact with an acceptor material under applied pressure includes a sheet of paper or the like, and a coating on one face of the sheet. The coating consists essentially of a dye precursor, a wax solid at 20.degree. C. and capable of dissolving the precursor, and a liquid activator soluble in the molten wax, but at most sparingly soluble in the solid wax and incapable of dissolving the dye precursor, the wax and activator being chemically inert to the dye precursor.Type: GrantFiled: October 18, 1978Date of Patent: April 21, 1981Assignees: Feldmuhle Aktiengesellschaft, Aktieselskabet For Kontor KemiInventors: John V. Andersen, Guido Dessauer
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Patent number: 4251593Abstract: The present invention provides a heat-sensitive recording sheet which is composed of a support and a heat-sensitive layer formed on said support, said heat-sensitive layer consisting essentially of a color-developable substance and an organic acid substance capable of making said color-developable substance develop a color when heated and containing at least one member selected from the group consisting of condensate of higher fatty acid amide and formaldehyde and condensate of higher fatty acid and ethylene diamine and at least one member selected from the group consisting of vegetable waxes and mineral waxes.Type: GrantFiled: July 20, 1979Date of Patent: February 17, 1981Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Sakamoto, Minoru Nomura, Minoru Hagiri
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Patent number: 4239639Abstract: Granular detergent compositions comprising an air sensitive material are packaged in a pouch which comprises a reclosable spout structure, the pouch being formed by heat sealing a laminate comprising an outside layer of a high melting point material, an aluminum foil layer, a paper layer, and an inner layer of a low melting material capable of acting as a glue.Type: GrantFiled: June 19, 1979Date of Patent: December 16, 1980Assignee: The Procter & Gamble CompanyInventors: Lawrence A. Gilbert, Jeffrey R. Leist
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Patent number: 4235657Abstract: A melt transfer web useful for transferring pre-printed inked graphic patterns onto natural or synthetic base fabric sheets, as well as other porous, semi-porous or non-porous material workpieces, is disclosed. The transfer web is comprised of a flexible, heat-stable substrate, preferably a saturated paper having a top surface coated with a first film layer of a given polymer serving as a heat-separable layer, and a second film layer superposed on the first film layer and comprised of another given polymer selected to cooperate with the first film layer to form a laminate having specific adhesion to porous, semi-porous or non-porous materials when heat softened. For use in the melt transfer process, the coated surface has printed thereon with compatible inks, any desired pattern or design.Type: GrantFiled: February 12, 1979Date of Patent: November 25, 1980Assignee: Kimberly Clark CorporationInventors: Edwin G. Greenman, Gary L. Nilo
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Patent number: 4201642Abstract: This invention provides an ultraviolet radiation-curable coating composition which after curing has utility as a moisture barrier film for the protection of substrates such as paper and cardboard.Illustrative of the invention radiation-curable composition is a blend of components comprising (1) chlorinated rubber, (2) chlorinated paraffin; (3) vinyl acetate; (4) trimethylolpropane triacrylate; (5) photoinitiator; and (6) heat and light stabilizer for the chlorocarbon components. The invention composition cures as a substantially 100 percent solids system within one second at room temperature when exposed to ultraviolet radiation.Type: GrantFiled: September 19, 1978Date of Patent: May 6, 1980Assignee: Celanese CorporationInventor: Michael T. Nowak
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Patent number: 4196247Abstract: A flexible heat sealable packaging material including a flexible web of substrate material, a normally tacky heat sealable wax composition on the surface of the substrate, and a non-blocking coating applied as a hot melt over the heat sealable layer which has good release properties with respect to itself and to the non-coated side of the substrate. The non-blocking coating melts at the heat sealing temperatures to allow the underlying heat sealable material to pass therethrough and complete the seal.Type: GrantFiled: April 17, 1978Date of Patent: April 1, 1980Assignee: American Can CompanyInventor: Dale C. Wiesman
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Patent number: 4143891Abstract: The negotiable document which may be used, e.g. by airlines includes a cover sheet provided with a hot spot carbon or other image transfer medium and at least one underlying sheet fully or partly coated with microcapsules of a dye intensifier and attractor. When information is imprinted on the cover sheet, the microcapsules of the dye intensifier in the underlying sheet are burst to wet the sheet and, thus, allow impregnation of the image transferred by the hot spot carbon into the fibers of the sheet. At the same time, the dye within the hot spot carbon is attracted into the sheet. The impregnation of the sheet is sufficient to prevent removal of the image from the underlying sheet without first destroying the sheet or mutilating it in such a manner that the defalcation effort is obvious.Type: GrantFiled: December 29, 1976Date of Patent: March 13, 1979Assignee: Transkirt CorporationInventor: Frank Neubauer
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Patent number: 4120916Abstract: The hot melt adhesives of the present invention comprise a blend of polyethylene, amorphous polypropylene and crystalline propylene containing polymer. These hot-melt adhesive compositions have a novel combination of properties such as short hot tack times and open times for the bonding of paraffin-modified corrugated board.Type: GrantFiled: March 2, 1977Date of Patent: October 17, 1978Assignee: Eastman Kodak CompanyInventors: Max F. Meyer, Jr., Richard L. McConnell
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Patent number: 4117199Abstract: A coated paper having a moisture and water-proof coating thereon is produced by coating a paper substrate with an aqueous emulsion containing a synthetic rubber latex and a wax emulsion in an amount of the solid wax of 5 to 200 parts by weight per 100 parts by weight of the solid synthetic rubber and, then, drying the coated paper at a temperature the same as or higher than the melting point of the wax. The resultant paper is highly capable of repulping.Type: GrantFiled: September 26, 1977Date of Patent: September 26, 1978Assignee: Oji Paper Co., Ltd.Inventors: Hideo Gotoh, Akira Igarashi, Reiko Kobayashi, Kiyotake Akiho
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Patent number: 4096314Abstract: A pressure-sensitive transfer sheet, includes a carrier sheet having at least one surface portion, a substrate disposed on the surface portion and a transfer layer disposed on the substrate. The substrate includes two chemical compositions which react together under pressure contact in order to change the color of one and the transfer layer transfers by pressure the new color to an object.Type: GrantFiled: June 1, 1976Date of Patent: June 20, 1978Assignee: Kores Holding Zug AGInventor: Manuel Cespon
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Patent number: 4093772Abstract: Disclosed is a non-tacky lift-off tape for letters or characters printed or typed in error comprised of a resin and amine wax coating applied to a film substrate.Type: GrantFiled: January 31, 1977Date of Patent: June 6, 1978Assignee: Burroughs CorporationInventors: Jerry H. Taylor, Gabriel T. Turula
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Patent number: 4032690Abstract: Thermosensitive recording material for use in thermal printing, which is composed of a coating composition applied on a support, which coating composition comprises (a) a chromogenic compound, (b) an organic acid, (c) a water-soluble binder containing a carboxyl group and having a softening point of 200.degree. C or higher, (d) a filler, (e) a metal salt of a higher fatty acid and (f) a wax, said recording material having a Bekk surface smoothness of 100 to 500 seconds.Type: GrantFiled: January 24, 1975Date of Patent: June 28, 1977Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Isao Kohmura, Yukio Tahara, Kiyoshi Futaki, Hiroshi Tange
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Patent number: 3985932Abstract: By providing a dispersion system which incorporates hard waxes having high molecular weights and a melting point greater than 180.degree.F., a unique paper coating additive is achieved. Preferably, the wax is powdered to a particle size less than 50 microns, and is dispersed in a system compatible with typical paper coating colors. In the preferred embodiments, high molecular weight Fischer-Tropsch waxes are employed.Type: GrantFiled: August 5, 1974Date of Patent: October 12, 1976Assignee: Moore and MungerInventor: Rotheus Byram Porter
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Patent number: 3985937Abstract: A polymeric latex emulsion adhesive for lamination of paperboard is described.Type: GrantFiled: September 8, 1975Date of Patent: October 12, 1976Assignee: Georgia-Pacific CorporationInventor: Rodger L. Fife
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Patent number: 3983279Abstract: A multiple heat-sensitive copying medium comprises a double-sided heat-sensitive member having a heat-sensitive color forming layer, a good thermally conductive substrate and a heat-sensitive transferring layer containing a heat-sensitive color forming material.Type: GrantFiled: July 15, 1974Date of Patent: September 28, 1976Assignee: General Company, Ltd.Inventors: Hiromu Matsushita, Takashi Yamahata, Hiroshi Kakimoto
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Patent number: 3967024Abstract: A packaging folder formed from a paperboard coated on both surfaces with a coating resistant to water and water vapor, the coating so fractured to be pervious to air but substantially impervious to water. A process by which the coating layers are fractured to give the desired air permeability and water resistance by passing the coated folder around small diameter rollers.Type: GrantFiled: March 18, 1974Date of Patent: June 29, 1976Assignee: The Price Company LimitedInventors: Laurence R. Beath, Alexander M. Vessie
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Patent number: 3962509Abstract: Waterproof corrugated paperboard and other paper constructions and a process for producing such waterproof paperboard by impregnating paperboard with a mixture containing from about 10 to about 50 weight percent tung oil and from about 90 to about 50 weight percent paraffin wax and curing the impregnated paper at a temperature from about 80.degree.C to about 163.degree.C.Type: GrantFiled: December 24, 1974Date of Patent: June 8, 1976Assignee: Continental Oil CompanyInventor: Charles E. Thompson
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Patent number: 3950593Abstract: A pregummed, remoistenable tape having long open time and short tack time which utilizes adhesive formulations using acid hydrolyzed, derivatized waxy maize starch as a component to replace animal glue in remoistenable pregummed tape formulations. Wet tack strength is equal or better than "all-animal glue" adhesives presently used, especially for short open times. In one embodiment, the major ingredient in the adhesive coating of the pregummed tape comprises waxy maize starch which is first acid-hydrolyzed and then copolymerized with acrylamide monomer using a free radical initiator in an aqueous system.In another second embodiment, acid-hydrolyzed, cyanoethylated waxy maize starch provides the major adhesive ingredient which replaces a substantial portion of the animal glue in the adhesive composition used to coat the pregummed tape.Type: GrantFiled: March 26, 1973Date of Patent: April 13, 1976Assignee: A. E. Staley Manufacturing CompanyInventors: William A. Bomball, Thomas G. Swift