Synthetic Resin Or Polymer Patents (Class 428/349)
  • Patent number: 7169840
    Abstract: In a process for the manufacture of aqueous floor covering adhesives without the addition of solvents, high-boiling solvents, or plasticizers and with the use of a non-carboxylated styrene/butadiene (SBR) dispersion and of an agent providing initial adhesion, a melt of the agent providing initial adhesion, for example a resin with a melting point of 45 to 98° C., is added to the SBR dispersion under high shear forces for the purpose of obtaining a durably stable emulsion which provides not only high initial adhesion, but also high final strength.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: January 30, 2007
    Assignee: Ardex GmbH
    Inventors: Jochem Billecke, Rudiger Oberste-Padtberg, Thomas Wanke, Kenneth A. Tarczewski, David Allen Smith
  • Patent number: 7166342
    Abstract: A heat-shrinkable resin film which has heat shrinkage in the maximum shrinkage direction of 20% or higher when a 10 cm×10 cm square sample cut out thereof is immersed in hot water at 85° C. for 10 seconds, pulled out, subsequently immersed in water at 25° C. for 10 seconds, and then pulled out, characterized in that a content of nitrogen atoms in a surface of the film is 0.1% to 3.0% and the surface of the film has wet tension of 36 mN/m or higher; and a film roll obtained by winding up the heat-shrinkable resin film characterized in that when the rolled film is sampled at a first sampling part located up to 2 m apart from the end of the rolled film and at other sampling parts located after the first sampling part at intervals of about 100 m and an average content of nitrogen atoms of each sample is calculated, then the content of nitrogen atoms of each sample is within the ±0.8% range based on the above average content of nitrogen atoms.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: January 23, 2007
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Satoshi Hayakawa, Norimi Tabota, Hiroshi Nagano
  • Patent number: 7157132
    Abstract: Biaxially oriented, co-extruded polyester films comprising a base layer consisting of at least 90 wt. % thermoplastic polyester, preferably polyethylene terephthalate (PET), at least one sealable outer layer and a second non-sealable outer layer and, optionally, other intermediate layers, in addition to at least one flame-retardant agent, preferably organic phosphorous compounds. The inventive films are characterized by low inflammability, high UV stability, no embrittlement when subjected to thermal stress and a surface which is devoid of troublesome opacity. They are suitable for a multiplicity of uses both indoors and outside. The outer layers contain anti-blocking agents such as silicic acid having an average particle diameter of preferably less than 50 nm and/or 2 ?m. Preferably, the sealable outer layer consists of a copolyester which is made of ethylene terephthalate and ethylene isophthalate units.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: January 2, 2007
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Ursula Murschall, Ulrich Kern, Andreas Stopp, Guenther Crass, Herbert Peiffer
  • Patent number: 7147913
    Abstract: The present invention relates to a display strip to hold commodity-containing bags. It can facilitate to make a process of attaching the bags thereto automate. It enables commodity-containing bags to be removed therefrom without having their appearance degraded. The display strip according to the present invention is utilized to hold and align a plurality of commodity-containing bags vertically for the display. It comprises at least a substrate layer and a sealant layer with the sealant layer containing an ethylene-vinyl acetate copolymer and an adhesive promoting tackifier.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: December 12, 2006
    Assignee: Ishida Co. Ltd.
    Inventors: Yoshio Iwasaki, Yukio Nakagawa, Tadao Oota, Naoji Ichise
  • Patent number: 7144615
    Abstract: This invention relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable with respect to at least CPET. The heatsealable and peelable top layer (A) consists of a) 70–97% by weight of polyester and b) 3–20% by weight of a polyester-incompatible polymer (=anti-PET polymer) based on the mass of the top layer (A), wherein c) the polyester is composed of 20–95 mol % of units derived from at least one aromatic dicarboxylic acid and 5–80 mol % of units derived from at least one aliphatic dicarboxylic acid, the sum of the dicarboxylic acid-derived molar percentages being 100, and d) the layer thickness of the top layer (A) dA is from 1.7 to 6.0 ?m. The invention further relates to a process for producing the film and to its use.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: December 5, 2006
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Herbert Peiffer, Gottfried Hilkert, Matthias Konrad, Cynthia Bennett, Paul Broemmel
  • Patent number: 7141768
    Abstract: A device for fastening surfaces together in an effective, efficient, and preferably reversible bond is disclosed. This device is particularly useful in the construction industry for fastening roll goods, such as wall coverings, or mill work, such as moldings, to surfaces, such as walls. The fastening device comprises a susceptor sheet, preferably having a thickness of no greater than about 2 mils, and a heat-activateable adhesive on at least one surface of the susceptor, wherein adhesive is placed on the substrate in a very carefully and specifically-defined manner. The fastening device is activated by induction heating, preferably by a hand-held induction tool. The method of fastening surfaces together utilizing the fastening device described above is also disclosed.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: November 28, 2006
    Assignee: Nexicor, LLC
    Inventors: Adam G. Malofsky, Bernard M. Malofsky, William H. Mann
  • Patent number: 7141293
    Abstract: This invention relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable from at least APET, the heatsealable and peelable top layer (A) consisting of a) 60–97% by weight of polyester and b) 3–30% by weight of a polyester-incompatible polymer (=anti-PET polymer), based on the mass of the top layer (A), wherein c) the polyester being composed of 25–95 mol % of units which derive from at least one aromatic dicarboxylic acid and 5–75 mol % of units which derive from at least one aliphatic dicarboxylic acid, the sum of the dicarboxylic acid-derived molar percentages being 100, and d) the layer thickness of the top layer (A) dA being from 0.7 to 2.5 ?m.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: November 28, 2006
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Herbert Peiffer, Bart Janssens, Gottfried Hilkert, Matthias Konrad
  • Patent number: 7128969
    Abstract: The invention relates to a method for the plastic shaping of a biaxially-drawn film, comprising at least one base layer, containing at least one polymer (I), made from at least one hydroxycarboxylic acid and ?0.2 wt %, based on the weight of the layer, of a thermoplastic polymer (II), different from polymer (I). Said film is plastically moulded by application of pneumatic and/or mechanical forces.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: October 31, 2006
    Assignee: Trespaphan GmbH
    Inventors: Detlef Busch, Marlies Rosenbaum, Manfred Rosenbaum
  • Patent number: 7128970
    Abstract: This invention is an indica transfer and method for its use to impart indica to polyolefin objects during rotational molding. The transfer is a laminate of at least two coats on a carrier sheet, which is preferably a flexible, transparent polymer sheet. The coats, as successive layers on the carrier sheet are: an indica coat of indica material in a graphic or alphanumerical array and a top coat of a top-coat pressure sensitive adhesive. Preferably the transfer also includes a backing coat of a backing-coat pressure sensitive adhesive between the carrier sheet and the indica coat, The pressure sensitive adhesive used for the top coat has a transition temperature less than the mold surface temperature onto which the transfer is applied to enable transfer of the coats to the interior surface of a rotational mold.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: October 31, 2006
    Inventors: Robert Alan Reeves, Michael J. Stevenson
  • Patent number: 7119128
    Abstract: A process for preparing pressure sensitive adhesives based on acrylate hotmelt, in which a monomer mixture including at least the following monomers (a) 70 to 100% by weight of compounds from the group of (meth)acrylic acid and the derivatives thereof corresponding to the following general formula is free-radically polymerized in solution wherein I. the polymerization is initiated using at least one dissociating photoinitiator and by irradiation with ultraviolet light, the photoinitiator being added to the monomer mixture before the beginning of the polymerization and/or to the reaction mixture in the course of the polymerization, II. the polyacrylate is freed from the solvent, III. the polyacrylate is processed further in the melt.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: October 10, 2006
    Assignee: tesa Aktiengesellschaft
    Inventors: Marc Husemann, Stephan Zöllner
  • Patent number: 7108910
    Abstract: A carpet tape construction 10 designed for use on top of a layer of padding 100 and beneath the abutting edges of two segments of carpet 200 which form a seam 203 to prevent the peaking of the seam 203 in a finished carpet installation. The tape construction 10 includes a tape backing member 30 having a coating 50, hot melt adhesive provided on surface top 31 and a heat activated contact adhesive 60 on the bottom 32 surface of the backing member 30 so that the hot melt adhesives 50, an the heat activated contact adhesive 60 will penetrate and bond the carpet segments 200, 200 and the padding 100 to the backing member 30.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: September 19, 2006
    Inventors: Donald R. Smith, Sr., Kenneth D. Bond
  • Patent number: 7087313
    Abstract: Disclosed is a biaxially stretched polylactic acid multilayer film and the use thereof as packaging film. The gist of the biaxially stretched polylactic acid multilayer film resides in the construction wherein a substrate layer (1) of the biaxially stretched film comprised of polylactic acid (A) has been laminated on at least one surface thereof with a coating layer (II) of an aliphatic polyester composition (D) comprised of 97˜5% by weight of an aliphatic polyester copolymer (B) having a melting point (Tm) of 80˜120° C., a crystallizing temperature (Tc) of 35˜75° C. and a difference of (Tm)?(Tc) within the range of 35˜55° C. and comprising an aliphatic or alicyclic dicarboxylic acid component (b1), an aliphatic or alicyclic dihydroxyl compound component (b2) and a difunctional aliphatic hydroxycarboxylic acid component (b3) and 3˜95% by weight of a polylactic acid copolymer (C) containing 7˜30% by weight of D-lactic acid, a total of the ingredients (B) and (C) being 100% by weight.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: August 8, 2006
    Assignee: Tohcello Co., Ltd.
    Inventors: Tohru Sawai, Junichi Narita, Hiroyuki Wakaki
  • Patent number: 7045183
    Abstract: The ease of opening of a tubular casing is facilitated based on a plastic film comprising three or more layers. The tubular sealed casing (1) for packaging the contents therein is based on a composite plastic film formed into a tubular form by bending the base film into a circular form, overlaying two edges of the bent base film, and heat-sealing the overlaid section so that a not heat-sealed section (8) will be left in an edge section of an upper film when the two edges thereof are overlaid on each other. The casing base film (2) is a composite plastic film comprising three or more layers. In this casing, the peel strength between the outer layer (5) and intermediate layer film (3) is set to a lower level as compared to the peel strength between the inner layer film (4) and intermediate layer film (3).
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: May 16, 2006
    Assignee: Japan Patent Management Co., Ltd.
    Inventors: Hirozo Amano, Toru Abe, Keiichi Hayashi, Hirotsugu Fukumori
  • Patent number: 7026047
    Abstract: Proposed is a security film system for documents or in general data carriers having a transfer layer and an adhesive or gluing layer portion which has at least one micro-encapsulated reactive adhesive component, wherein the adhesive or gluing layer portion remains activatable over a period of time of up to at least one year and the at least one reactive adhesive component hardens after activation to form a duromer.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: April 11, 2006
    Assignee: OVD Kinegram AG
    Inventor: Olaf Krolzig
  • Patent number: 7011883
    Abstract: The present invention relates to a display strip to hold commodity-containing bags. It can facilitate to make a process of attaching the bags thereto automate. It enables commodity-containing bags to be removed therefrom without having their appearance degraded. The display strip according to the present invention is utilized to hold and align a plurality of commodity-containing bags vertically for the display. It comprises at least a substrate layer and a sealant layer with the sealant layer containing an ethylene-vinyl acetate copolymer and an adhesive promoting tackifier.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: March 14, 2006
    Assignee: Ishida Co., Ltd.
    Inventors: Yoshio Iwasaki, Yukio Nakagawa, Tadao Oota, Naoji Ichise
  • Patent number: 7008692
    Abstract: A protective layer transfer sheet comprising a thermally transferable protective layer releasably provided on a substrate sheet is provided which, when a protective layer is formed by thermal transfer onto an image-receiving sheet with an image formed thereon, can prevent carrying troubles, such as meandering or cockling, within a printer. In a protective layer transfer sheet 10 comprising a substrate sheet 1, a heat-resistant slip layer 3 provided on one side of the substrate sheet 1, and a thermally transferable protective layer 2 releasably provided on at least a part of the surface of the substrate sheet 1 remote from the heat-resistant slip layer 3, bringing the coefficient of friction between the surface of the protective layer and the surface of the image-receiving sheet before thermal transfer to 0.05 to 0.5 in terms of ?0 (coefficient of static friction) and ? (coefficient of dynamic friction) with the value of ?0/? being 1.0 to 1.
    Type: Grant
    Filed: February 11, 2005
    Date of Patent: March 7, 2006
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hideki Usuki, Satoshi Moriguchi, Hitoshi Saito
  • Patent number: 7008693
    Abstract: Highly heat-resistant labels usable with the adherends which can be exposed to high temperatures are provided and include the following: (1) a highly heat-resistant label comprising a support base and a hot-melt adhesive layer composed of a thermoplastic resin showing optical anisotropy in molten state and/or a thermoplastic polyimide; (2) a label of (1), further having an agglutinant layer, wherein the agglutinant layer, hot-melt adhesive layer and support base are laminated in that order; and (3) a label of (1) or (2), wherein the thermoplastic resin showing optical anisotropy in molten state comprises a completely aromatic liquid crystal polyester.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: March 7, 2006
    Assignees: Sumitomo Chemical Company, Yushi-Seihin Co., Ltd.
    Inventors: Shino Matsumi, Takanari Yamaguchi, Hiroaki Kumada, Masaru Kijima, Shinji Kinoshita, Koji Age
  • Patent number: 7008677
    Abstract: A multilayer laminate useful in the packaging of respiring food products such as swiss-type cheeses which generate or release carbon dioxide gas during storage and wherein said multilayer laminate allows for the egress of said gas while minimizing the ingress of oxygen. The multilayer laminate comprises at least one layer of a low gauge polyamide such as poly (-caprolactam).
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: March 7, 2006
    Assignee: Pechiney Emballage Flexible Europe
    Inventors: Jay D. Hodson, Chad M. Perre
  • Patent number: 6974613
    Abstract: A packaging for an additive to be added to a plastic batch consists of a packaging film of thermomelting plastic material shaped to form a bag and a thermomelting polyolefin-based adhesive applied to the plastic film and forming closure seams for sealing the bag. The adhesive is moisture crosslinking and can be a hot melt. The thermomelting plastic material is identical to or compatible with a plastic material of the plastic batch to which the packaging and the additive are to be added.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: December 13, 2005
    Assignee: Bischof + Klein GmbH & Co. KG
    Inventors: Helmut Sellmeier, Uwe Wiegand
  • Patent number: 6972151
    Abstract: A device for forming erasable images on a reusable medium, comprising: an erasing portion; and a writing portion; wherein the erasing portion comprises a separator for separating at least two layers of the reusable medium; and wherein the writing portion comprises automatic machine-driven pressure applicators for applying pressure but no ink to the reusable medium, thereby forming an image on the reusable medium.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: December 6, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Barry Bronson
  • Patent number: 6971829
    Abstract: A fastening device, which will facilitate the assembly of associated parts or manufactured articles, and electromagnetic energy absorptive component for absorbing electromagnetic waves and converting wave energy to heat; an expansive component, which expands upon exposure to heat emanating from the target material; matrix material, which will become adhesively active and effect the adherence of the associated parts upon exposure to heat emanating from the target material, and a stiffening component.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: December 6, 2005
    Assignee: Senco Products, Inc
    Inventors: Duane C. Shomler, David L. Remerowski, Anthony T. Racca, David J. Lococo
  • Patent number: 6949275
    Abstract: A packaging laminate (10) comprising a core layer (11) and a gas barrier layer (14) of moisture- and liquid-sensitive barrier polymer, e.g. a copolymer of ethylene and vinyl alcohol (EVOH). The packaging laminate (10) preferably has outer liquid-tight coatings (12 and 13) of thermoplastic in order to make for sealing of the packaging laminate by thermosealing. In order to impart increased moisture and liquid protection to the moisture- and liquid-sensitive barrier layer (14), the packaging laminate (10) has a layer (16) of mineral filled polyolefin between the barrier layer (14) and the outer, liquid-tight coating (13) on the one side of the core layer (11). A packaging container produced from the packaging laminate (10) makes for the storage of a packed liquid food, such as juice, wine, cooling oil etc., with so-called extended shelf life.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: September 27, 2005
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventor: Hans Johansson
  • Patent number: 6949274
    Abstract: Sealant is statically applied to the edges of panels by placing a sealant on the inner surfaces of the walls of a container holding the panels. A shrink wrap sleeve is preferably applied to the panel filled containers, causing contact between the inner surface of the container and panel edges, such that the sealant is transferred to the edges of the panels. Further transfer occurs during handling of the container, due to movement of the panels in the container and contact between the sealant and panel edges.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: September 27, 2005
    Assignee: Premark RWP Holdings, Inc.
    Inventors: Thomas J. Nelson, Victoria L. Stolarski
  • Patent number: 6936318
    Abstract: A multi-layered pouch capable of holding pharmaceutical related items. The pouch includes first and second sides engaged along a plurality of extending and interconnected edges thereof and in order to define a hermetically sealed interior for holding the items. Each of the sides exhibits a multi-layered construction including an outer high density polymer film, coated with a clay material, a lower density polymer film secured to an exposed side of the high density polymer film, a metal foil layer secured to an exposed inner facing side of the lower density film, and a sealant resin layer secured to an exposed facing side of the foil layer. In use, the pouch exhibits tear resistant properties and such as which prevents a child from biting into and opening the pouch.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: August 30, 2005
    Assignee: Reynolds Metals Company
    Inventor: Patrick H. Dent
  • Patent number: 6933059
    Abstract: A film material for use in packaging electrostatically sensitive components and corrosion sensitive components. The film material includes a static dissipative polymer attached to a first moisture barrier which in turn is attached to a second moisture barrier. The second moisture barrier has a low charge retaining coating. The first and second moisture barriers are separated by dielectric. Moisture barriers are formed by either a metal foil, or a metallized polymer in which the metallization thickness is at least 178 Angstroms thick. The metal of the second moisture barrier is in contact with the low charge retaining coating. The low charge retaining coating together with the metal in the second moisture barrier has a surface conductivity between 10?3 and 10?7 Siemens.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: August 23, 2005
    Assignee: SCC Products, Inc.
    Inventor: Brent Beamer
  • Patent number: 6926956
    Abstract: The present invention has a main object to provide a transparent conductive heat sealing material of which antistatic property does not deteriorates even at a low humidity, and has a transparency to an extent of permitting visual recognition of the contents and a carrier tape lid using the same. To achieve this object, the transparent conductive heat sealing material of the invention is characterized by a heat-sealable synthetic resin, and conductive fine particle having a 50% particle size of up to 1.0 ?m.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: August 9, 2005
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Isao Inoue, Hiroko Takamori, Masumi Hyakutome, Kazuhito Fujii, Hideki Imamura
  • Patent number: 6926959
    Abstract: The invention is directed to a radiation curable adhesive composition comprising at least one vinyl modified block copolymer having a first polyvinyl aromatic block and a second polydiene block having vinyl functionality, and at least one tackifier. Optionally, the composition may comprises at least one second block copolymer that has not been vinyl modified, at least one platicizer, and at least one wax. The invention is also directed to a double-faced label formed from the composition and the method of producing said label.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: August 9, 2005
    Assignee: H. B. Fuller Licensing & Financing, Inc.
    Inventors: Mark S. Kroll, Margarita Acevedo, Janelle C. Cameron, Thomas F. Kauffman, Jeffrey S. Lindquist, Eugene R. Simmons, David B. Malcolm, Kathryn A. Coleman
  • Patent number: 6921574
    Abstract: The present invention relates to the use, for adhesion on hair or fiber-populated surfaces, of hydrogel adhesive characterized by a G?25, (1 rad/sec) or below 1000 Pa, resulting in embedding of the hair of fiber and good adhesion properties on the surface. The invention also encompasses Personal Care Products and Surface Care Articles containing the hydrogel compositions herein.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: July 26, 2005
    Assignee: The Procter & Gamble Company
    Inventors: Fabio Cinelli, Peter Coles, Stephen Allen Goldman, Mario Romano
  • Patent number: 6916526
    Abstract: A laminate film comprising a polyolefin resin layer having a discharge-treated surface on one side of the polyolefin resin layer comprising at least 0.3% nitrogen functional groups on the discharge-treated surface; and a metal layer having an optical density of at least about 2.6 deposited on the discharge-treated surface of the polyolefin resin layer has a barrier durability under 9% elongation of 46.5 cc/m2/day or less oxygen transmission rate through the laminate film.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: July 12, 2005
    Assignee: Toray Plastics (America), Inc.
    Inventors: Keunsuk P. Chang, Scott Narkevicius, Kevin S. Kitchin
  • Patent number: 6916751
    Abstract: The present invention is directed to a heat transfer material containing a first (interior) meltable layer, a second (surface) meltable layer, and a release coating layer separating the first and second meltable layers. During a transfer process, the first (interior) meltable layer, release coating layer, and second (surface) meltable layer penetrate into the yarn interstices, or other undulations, of a given substrate to be coated. Only the second (surface) meltable layer transfers to the substrate, resulting in a thinner transfer coating compared to conventional coatings. The present invention is also directed to a method of making a printable heat transfer material and a method of forming an image-bearing coating on a surface of a substrate using the printable heat transfer material in a hot or cold peelable transfer process.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: July 12, 2005
    Assignee: Neenah Paper, Inc.
    Inventor: Francis J. Kronzer
  • Patent number: 6913809
    Abstract: A lap sealable film for forming bags on conventional vertical form/fill/seal equipment containing a seal layer and a barrier layer. The seal layer and barrier layer form opposing surfaces of the film. The seal layer contains single site catalyzed polyethylene and is capable of sealing to the barrier layer. The barrier layer comprises a heat resistant and moisture barrier material, such as high density polyethylene or polypropylene.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: July 5, 2005
    Assignee: Pliant Corporation
    Inventor: Paul Z. Wolak
  • Patent number: 6911241
    Abstract: A container constructed from a laminate structure that includes a layer of foamed polymer. The layer of foamed polymer replaces the paperboard layer of known laminate structures. A preferred embodiment of the laminate structure is comprised of a layer of foamed polymer, a first layer of low density polyethylene, a second layer of low density polyethylene, a layer of aluminum foil, a tie layer, and a third layer of low density polyethylene. The container has a non-polar homogeneous heat seal that may be created by conventional equipment at a temperature ranging from about 250 degrees Fahrenheit to about 500 degrees Fahrenheit.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: June 28, 2005
    Assignee: SIG Combibloc, Inc.
    Inventors: Warren C. Tyler, Steven G. Taylor, Melvin L. Druin, Arthur W. Robichaud
  • Patent number: 6902782
    Abstract: A packaging tape includes a carrier tape and a top tape. The carrier tape is provided with device-accommodating recesses. The top tape is attached to the carrier tape by heat-sealing to close the device-accommodating recesses. The carrier tape includes a resin layer made by impregnation and drying of a water-dispersible resin or a water-soluble resin or both. The top tape is attached to the resin layer of the carrier tape. This prevents the generation of static electricity on the top tape as the top tape is peeled off the carrier tape. Accordingly, the unscheduled removal of electronic devices from the device-accommodating recesses by the static electricity is avoided.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: June 7, 2005
    Assignee: Rohm Co., Ltd.
    Inventor: Shigeru Kambara
  • Patent number: 6902802
    Abstract: The present invention provides a heat-sealable polyester composition having an amorphous processing window ranging from a Tg in the range of about 40° C. to about 70° C., to a Tcg in the range of about 70° C. to about 150° C. The composition preferably contains a mixture of poly(ethylene terephthalate) homopolymer or copolymer and poly(trimethylene terephthalate) homopolymer or copolymer, either as a physical blend or as a copolyester oligomer or polymer prepared from the respective monomers. The resulting composition is heat-sealable at low temperatures, retains barrier properties and is non-flavor-scalping.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: June 7, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Joseph V. Kurian, Diane M. Hahm, Benjamin A. Smillie
  • Patent number: 6896956
    Abstract: An opaque, sealable and peelable film, including at least (a) a cavitated first core layer containing a thermoplastic polymer and a cavitating agent, (b) a second core layer containing a peelable blend and (c) one or more outer layers, at least one of which is a sealable outer layer, each independently containing a thermoplastic polymer. The peelable blend of the second core layer (b) may contain (i) from 20-80 wt % of a polyethylene and (ii) from 80-20 wt % of a polyolefin incompatible with polyethylene (i), or it may contain (i) from 10-35 wt % of ethylene-?-olefin elastomer and (ii) from 90-65 wt % of propylene homopolymer.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: May 24, 2005
    Assignee: ExxonMobil Oil Corporation
    Inventor: Dan-Cheng Kong
  • Patent number: 6893717
    Abstract: A heat-transfer label (11) including a non-wax, non-silicone release layer or coating (17) for use in decorating an article, such as a glass container, without leaving a visually discernible release residue on the decorated article. In a preferred embodiment, the label includes a transfer portion (21), the transfer portion comprising a protective lacquer layer (23), an ink design layer (25) over the protective lacquer layer, and a heat-activatable adhesive layer (27) over the ink design and protective lacquer layers. The label also includes a support portion (13), the transfer portion being positioned over the support portion for transfer of the transfer portion from the support portion to an article under conditions of heat and pressure. The support portion comprising a carrier layer (15) and a release layer or coating.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: May 17, 2005
    Inventors: Kuolih Tsai, John W. Geurtsen, James S. Nugent
  • Patent number: 6887917
    Abstract: Curable pressure sensitive adhesive compositions comprising an acrylate copolymer, a mono-acrylate oligomer, a multi-acrylate oligomer having from 2 to 5 acrylate functional groups per molecule, and a photoinitiator, the adhesive exhibiting pressure sensitive adhesive characteristics and forms at least a semi-interpenetrating polymer network when cured; wherein the semi-IPN has an average molecular weight between crosslinks (Mc) greater than about 3000, and the cured adhesive has a peel strength greater than about 40 N/dm. Embodiments of the adhesive compositions, when cured, are optically clear and resistant to heat and moisture.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: May 3, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Jie Yang, Stephen A. Johnson, William L. Kausch, Ying-Yuh Lu, Steven J. McMan
  • Patent number: 6884480
    Abstract: Film and sheet materials, and articles made therefrom, such as bags, pouches, trays, etc., comprise one or more layers of homogeneous alpha-olefin/vinyl aromatic copolymer, preferably an ethylene/styrene copolymer. The alpha-olefin/vinyl aromatic copolymer has properties which can provide a desired performance characteristics such as impact resistance, printability, RF sealability, free shrink, optics, high permeability, etc. The homogeneous alpha-olefin/vinyl aromatic copolymer may be present in a monolayer film, either alone or in a blend, or may be included in one or more layers of a multilayer film. Also included is a multilayer thermoformable article comprising a web having a film of such alpha-olefin/vinyl aromatic copolymers thereto.
    Type: Grant
    Filed: September 11, 2001
    Date of Patent: April 26, 2005
    Assignee: Cryovac, Inc.
    Inventors: John G. Bradfute, Blaine C. Childress, Marvin R. Havens, C. Michael Lulham, Ronald D. Moffitt, Martindale Nelson, Lawrence R. Norpoth, William P. Roberts, Gloria G. Toney, George D. Wofford
  • Patent number: 6881470
    Abstract: Biaxially oriented, co-extruded polyester films comprising a base layer consisting of at least 90 wt. % thermoplastic polyester, preferably polyethylene terephthalate (PET), at least one sealable outer layer and a second non-sealable outer layer and, optionally, other intermediate layers, in addition to at least one flame-retardant agent, preferably organic phosphorous compounds. The inventive films are characterized by low inflammability, no embrittlement when subjected to thermal stress and a surface which is devoid of troublesome opacity, and are suitable for a multiplicity of uses both indoors and outside. The outer layers contain anti-blocking agents such as silicic acid having a particle diameter of preferably less than 50 nm and/or more than 2 ?m. Preferably, the sealable outer layer consists of a copolyester which is made of ethylene terephthalate and ethylene isophthalate units.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: April 19, 2005
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Ursula Murschall, Ulrich Kern, Andreas Stopp, Guenther Crass, Herbert Peiffer
  • Patent number: 6875506
    Abstract: Polyacrylates obtainable by thermal crosslinking of a polymer mixture comprising the following components: a) a polyacrylate copolymer of the following monomers a1) acrylates and/or methacrylates of the following formula CH2?CH(R1)(COOR2), ?where R2?H or CH3 and R2 is an alkyl chain with 1-20 carbon atoms, at 65-99% by weight, based on a), a2) olefinically unsaturated monomers containing functional groups, at 0-15% by weight, based on a), a3) acrylates and/or methacrylates whose alcohol component contains tert-butoxycarbonyl (BOC) and/or hydroxyl groups, at 1-20% by weight, based on a), at 80-99.8% by weight, based on the polymer mixture, b) a polymerization regulating photoinitiator at 0.1-15% by weight, based on the polymer mixture, c) difunctional isocyanate and/or difunctional epoxide at 0.1-5% by weight, based on the polymer mixture.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: April 5, 2005
    Assignee: tesa AG
    Inventors: Marc Husemann, Stephan Zöllner
  • Patent number: 6872276
    Abstract: A process for transferring a thin polymeric film to either woven or non-woven fabrics by first coextruding the thin polymeric film with a plastic support layer, then adhesively laminating the polymeric film to a fabric, followed by delaminating the support layer. The thin base layer remaining on the fabric imparts desired properties to the fabric while maintaining the soft feel, or drapeability, of the fabric, as opposed to lamination of thicker polymeric films to fabrics.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: March 29, 2005
    Assignee: Honeywell International Inc.
    Inventors: Michael J. Cherpinsky, Yuan-Ping Robert Ting
  • Patent number: 6863954
    Abstract: Biaxially oriented, coextruded polyester films with a base layer at least 90% by weight of which is composed of a thermoplastic polyester, preferably polyethylene terephthalate (PET), and with at least one sealable outer layer and a second nonsealable outer layer and, if desired, with other intermediate layers, and comprising at least one UV absorber, preferably hydroxybenzotriazoles and triazines, have high UV resistance, do not embrittle when exposed to high temperatures, have a surface without undesirable haze and are suitable for numerous indoor and outdoor applications. The outer layers comprise antiblocking agents, such as silica with an average particle diameter preferably below 50 nm and/or above 2 ?m, and the sealable outer layer is preferably composed of a copolyester which has been built up from ethylene terephthalate units and ethylene isophthalate units.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: March 8, 2005
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Herbert Peiffer, Guenther Crass, Ulrich Kern, Ursula Murschall, Andreas Stopp
  • Patent number: 6861127
    Abstract: Thermoformable plastic films can be formed into bags, pouches, trays, etc. which are useful when packaging foodstuffs and other products. These films enjoy widespread use in the packaging of meat and other oxygen sensitive products due to the gas permeation barrier provided. Thermoformable packaging films comprise one or more layers of thermoplastic, including olefinic copolymers, amorphous and crystalline nylons, ionomeric polymers, and polyolefins. By selecting the type and combination order of thermoplastics, a packaging film was developed that provides excellent impact and abrasion resistance, sealability, thermoformability, and optical clarity.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: March 1, 2005
    Assignee: Curwood, Inc.
    Inventors: Amy Lou Glawe, Adriana Nobre Rubo, Stephen James Vicik
  • Patent number: 6855418
    Abstract: A resin tie bar 1A is formed from a base material 10, 11 of a heat-resistant resin whose melting point is higher than the temperature during resin molding and an insulative adhesive layer 12 on the base material 10, 11 and formed from an insulative adhesive agent that may or may not be removable prior to resin molding depending upon its composition. The resin tie bar 1A is applied to the surface of the leads 22 of a lead frame, and resin molding is then performed, during which the resin tie bar 1A is pressed by a heated mold 3, which softens the insulative adhesive agent of the resin tie bar 1A and pushes it into the gaps 23 between the leads 22 of the lead frame. Thus the resin tie bar 1A can be easily formed into a shape that is favorable for the leads 22 of the lead frame.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: February 15, 2005
    Assignee: LINTEC Corporation
    Inventors: Osamu Yamazaki, Hideo Senoo, Kazuyoshi Ebe
  • Patent number: 6855758
    Abstract: The invention relates to transparent, biaxially oriented and heat-set films having one or more layers and compris, as main constituent, at least one crystallizable thermoplastic, in particular a polyester, and also comprise at least one hydrolysis stabilizer. The hydrolysis stabilizer is preferably a phenolic compound, an oxazoline, and/or a monomeric or polymeric carbodiimide, where appropriate combined with an organic phosphite. It is preferably added in the form of a masterbatch. The film exhibits low longitudinal and transverse shrinkage. On exposure to moisture and heat it shows practically no embrittlement and retains its ultimate tensile strength. The additional functionality is preferably that the film has been made UV-resistant, or flame-retardant, or on one side or on both sides has been coated, or is sealable, and/or has been corona- or flame-treated.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: February 15, 2005
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Ursula Murschall, Ulrich Kern, Thorsten Kiehne, Harald Hessberger
  • Patent number: 6852387
    Abstract: The invention relates to a one-sided mat, sealable, biaxially oriented polyester film with at least a base layer (B), a sealable cover layer (A) and an additional mat cover layer (C), where the sealable cover layer (A) has a minimum sealing temperature of 120° C. maximum and a seal-seam strength of at least 1.3 N/15 mm film width and where the topographies of the sealable cover layer (A) and the mat shimmering cover layer (C) have certain characteristics. The film according to this invention is suitable for the use as flexible packaging material, especially when used in connection with fast-running packaging machines.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: February 8, 2005
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Herbert Peiffer, Stefan Bartsch, Gottfried Hilkert
  • Patent number: 6844038
    Abstract: The present invention provides a peelable polymeric layer structure having a first sealant layer including an ethylene-containing polymer, and a second sealant layer including a polypropylene-containing polymer attached to the first sealant layer along a peelable seal. The present invention also provides an overpouch container including a first sidewall having a first sealant layer of an ethylene-containing polymer, and a second sidewall having a second sealant layer of a propylene containing polymer. The second sealant layer is attached to the first sealant layer along a peelable peripheral seal.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: January 18, 2005
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Paul-Andre Gollier, Patrick Balteau, Jean-Pierre Hartman, Franco Peluso
  • Patent number: 6841241
    Abstract: Repeated use of an adhesive-film laminate for bonds which can be redetached without residue by pulling on the laminate in the direction of the bond plane, the laminate employed comprising a) an elastic support with a resilience of at least 50% b) coated on at least one side with a solvent or hot-melt pressure-sensitive acrylate adhesive or dispersion pressure-sensitive acrylate adhesive.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: January 11, 2005
    Assignee: tesa AG
    Inventors: Bernd Lühmann, Reinhard Storbeck, Christian Harder, Stephan Zöllner
  • Patent number: 6841222
    Abstract: The invention relates to a white, sealable, flame-retardant coextruded, biaxially oriented polyester film composed of at least one base layer B and of outer layers A and B applied to the two sides of this base layer. The film also comprises at least one flame retardant and one white pigment. The invention also includes the use of the film and a process for its production.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: January 11, 2005
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Ursula Murschall, Klaus Oberlaender, Guenther Crass, Ulrich Kern, Herbert Peiffer
  • Patent number: 6841212
    Abstract: Disclosed is an adhesive composition suitable for bonding to a polymeric material and steel. The composition comprises specified proportions of a maleic anhydride-modified propylene-ethylene copolymer resin, a maleic anhydride-modified polyethylene, a polyisobutylene, a terpolymer comprising ethylene, propylene and a non-conjugated diene, and a hydrocarbon resin tackifier. The composition is useful in preparing a heat-recoverable article that is used to provide a protective coating on the joints of a steel pipeline. Also provided is a single sleeve or two-sleeve system for application to the joints of a coated steel pipeline operating at temperatures up to 120° C.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: January 11, 2005
    Inventors: Sirarpi Bicakci-Jenkins, Abboud L. Mamish