Patents Examined by Daniel Zirker
  • Pressure-sensitive adhesive and surface protecting material
    Patent number: 6329049
    Abstract: A pressure-sensitive adhesive comprising 100 parts by weight of an isobutylene polymer having been masticated in an organic solvent with a radical generator and 0.001 to 5 parts by weight of at least one release control agent selected from the group consisting of an alcohol having a molecular weight of 90 to 300 and an oxygen atom content of 8.5% or more or a derivative thereof and a carboxylic acid having a molecular weight of 70 to 400 and an oxygen atom content of 11% or more or a derivative thereof; and a surface protecting material having a pressure-sensitive adhesive layer comprising the adhesive. The adhesive has well-balanced characteristics in initial adhesion, retention of initial adhesion, and weather resistance.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: December 11, 2001
    Assignees: Nitto Denko Corporation, Kansai Paint Co., Ltd.
    Inventors: Mitsuyoshi Shirai, Isamu Teranishi, Hideki Mitsuda, Akira Taguchi, Kenji Sano, Komaharu Matsui, Takeshi Eda, Hiroshi Ueda
  • Hydrocolloid pressure sensitive adhesives
    Patent number: 6326421
    Abstract: A pressure-sensitive adhesive material made of a weakly elastic mixture comprising a continuous phase formed essentially from a physically cross-linked solid rubber, which comprises a blend of A-B-A block copolymer, such as a styrene-isoprene-styrene block copolymer and a diblock copolymer such as styrene-butadiene, styrene-isoprene or a hydrogenated styrene-diene copolymer such as styrenel/etyhlene butylene, a compatible tackifying resin and a low-molecular weight polyisobutylene, optionally modified by butyl rubber, and a discontinuous phase comprising one or more hydrocolloids that are soluble and/or swellable in water.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: December 4, 2001
    Assignee: Avery Dennison Corporation
    Inventor: Roger D. A. Lipman
  • Self- adhesive protective film
    Patent number: 6319353
    Abstract: Self-adhesive protective film for the exterior of painted vehicles, especially cars, characterized in that the backing of the protective film is a film, the UV permeability in the range from 290 to 400 nm is below 1%, the bond strength on steel is between 0.2 and 2.8 N/cm and the adhesive composition consists of a copolymer comprising at least two different &agr;-olefins having 2 to 12 carbon atoms and at least one further comonomer, no &agr;-olefin having a proportion of 75 mol-% or more in the adhesive composition as a whole.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: November 20, 2001
    Assignee: Beiersdorf AG
    Inventor: Bernhard Müssig
  • Multi-layered sealant
    Patent number: 6316099
    Abstract: A multi-layered article for establishing a seal between two substrates. The multi-layered article includes a bulk layer and an adhesive layer. The layers of the article are generally epoxy-containing, photo-activated materials. Upon photo-activation, the bulk layer and the adhesive layer have different curing rates. The article is suitable for adhering and sealing two substrates together. The article is particularly useful when at least one of the substrates is glass.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: November 13, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Clayton A. George, Michael A. Johnson
  • Pressure sensitive adhesive sheet for producing a chip
    Patent number: 6312800
    Abstract: A process for producing a chip, comprising the steps of: setting an object to be diced on a pressure sensitive adhesive sheet for producing chip comprising at least one layer of shrinkable film, an expansible film and a pressure sensitive adhesive layer for setting the object; fixing edges of the pressure sensitive adhesive sheet for producing chip; dicing the object into chips, and shrinking the shrinkable film to thereby expand chip spacings. In the process for producing small chips such as semiconductor chips, chip spacings can be expanded without the need to conduct the conventional expansion step.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: November 6, 2001
    Assignee: Lintec Corporation
    Inventors: Hayato Noguchi, Kazuyoshi Ebe
  • Adhesive tape and method for producing it
    Patent number: 6309745
    Abstract: The invention relates to a method for producing an adhesive tape for redetachable closure or fixing, comprising a strip-like carrier (1), which is being coated with a self-adhesive agent (2), at least on the active area which during use of the adhesive tape is brought into contact with a counter surface (7), and also relates to the adhesive tape as such. For improving production of the adhesive tape, several methods are suggested, according to one of which in a first step the active area is coated with a self-adhesive agent (2) forming a continuous layer, and in a second step, in order to reduce the effective entire adhesive area, a non-adhering or less-adhering separating pattern (4) is printed on the self-adhesive layer.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: October 30, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Eric Joachim Willms, Edgar Lionel Tilly
  • Polymeric films
    Patent number: 6306490
    Abstract: Biaxially oriented polymeric films having a core layer of a voided propylene homopolymer with a density of not more than 0.70 g/cm3, and at least one substantially non-voided layer on each surface of the core layer, the ratio of the combined thicknesses of the non-voided layers on the respective surfaces of the core layer being from 2:1 to 1:1. Films in accordance with the present invention have low curl, particularly after having been printed.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: October 23, 2001
    Assignee: Trespaphan GmbH
    Inventor: Helen Ann Biddiscombe
  • Breathable elastic polymeric film laminates
    Patent number: 6303208
    Abstract: An elastomeric breathable three-dimensional composite material and the process for producing the same are disclosed. A carrier material is supplied onto a top surface of continuous portions of an elastomeric film to form the composite material. A pressure differential is applied to a bottom surface of film for a period of time sufficient for three-dimensional apertured structures to be formed in the film.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: October 16, 2001
    Assignee: Tredegar Film Products Corporation
    Inventor: James E. Pelkie
  • Adhesive sheet for semiconductor connecting substrate, adhesive-backed tape for tab, adhesive-backed tape for wire-bonding connection, semiconductor connecting substrate, and semiconductor device
    Patent number: 6303219
    Abstract: An adhesive sheet for a semiconductor connecting substrate consisting of a laminate having an adhesive layer on a substrate, wherein said adhesive layer contains a thermoplastic resin (A) and an epoxy resin (B) and said epoxy resin (B) contains at least one epoxy resin (B) selected from (I) dicyclopentadiene skeleton-containing epoxy resins, (II) terpene skeleton-containing epoxy resins, (III) biphenyl skeleton-containing epoxy resins and (IV) naphthalene skeleton-containing epoxy resins as an essential component; an adhesive-backed tape for TAB consisting of a laminate having an adhesive layer and a protective film layer on a flexible organic insulating film, wherein said adhesive layer has a softening temperature of 60 to 110° C. after having been cured and 50 hours or more in the insulation resistance dropping time after having been allowed to stand in an environment of 130° C.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: October 16, 2001
    Assignee: Toray Industries, Inc.
    Inventors: Yasushi Sawamura, Shoji Kigoshi, Taku Hatano, Yukitsuna Konishi, Yoshio Ando
  • Embossed cling wrap
    Patent number: 6299966
    Abstract: A cling wrap comprising a first surface having an embossed area including a plurality of protrusions therefrom forming a plurality of raised contact surfaces and a base surface, wherein the total surface area of said raised contact surfaces comprises less than about 10 percent of the total surface area of the embossed area. An adhesive is applied to cover at least 80 percent of the embossed area. The cling wrap is acceptable for direct food contact and is sufficiently heat resistant for microwave re-heating.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: October 9, 2001
    Assignee: Reynolds Metals Company
    Inventors: Doug Bonke, Jeffrey Nicoll
  • Microsphere adhesive coated article for use with coated papers
    Patent number: 6296932
    Abstract: An adhesive coated article comprises a layer of microsphere adhesive onto a portion of at least one major surface of a substrate. The microspheres in the adhesive are obtained as the reaction product of (a) at least one alkyl (meth)acrylate ester wherein the alkyl group contains four to about 14 carbon atoms, preferably four to about 10 carbon atoms and (b) a comonomer(s). The comonomer may be a nonpolar, ionic, polar comonomer or mixtures of such monomers. This microsphere adhesive either contains a (meth)acrylamide comonomer or a polyacrylamide material is post-added to the microsphere adhesive. The adhesive exhibits a lower than expected adhesion to coated papers without sacrificing the adhesion to standard uncoated (bond) papers and preferably, the 90° peel adhesion, as measured on Kromkote® paper (used as an industry standard) is in the range of 20 to 250 grams/inch.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: October 2, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Michael D. Crandall, Terrence E. Cooprider
  • Painter's masking tape and its use
    Patent number: 6296904
    Abstract: Use of an adhesive film which is detachable by pulling in the direction of the bond plane and a) whose self-adhesive composition is based on thermoplastic rubber and tackifying resins, the said adhesive film having high elasticity and low plasticity, the adhesion being lower than the cohesion, the adhesiveness largely disappearing when the film is extended and the ratio of peel force to tear load being 1:1.5 or more, and b) which carries an extensible nonwoven laminated onto one side of the adhesive composition, as a painter's decorative tape which can be removed again by pulling without residue or damage.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: October 2, 2001
    Assignee: Beiersdorf AG
    Inventor: Dieter Zimmermann
  • Elastic crack tape
    Patent number: 6291368
    Abstract: An elastic crack tape in the form of continuous strip for repairing a crack on a wall. The tape includes a middle layer of net that has elastic material applied over two sides thereof. The elastic material extends into some meshes of the net to firmly associate with the net. The elastic material has elasticity sufficient to absorb deformation of the repaired wall caused by expansion or contraction of the wall due to changes in temperature, and thereby protects the middle layer of net from undesirable tearing or compression.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: September 18, 2001
    Inventor: Wen-Wang Lee
  • Rubber article capable of bonding to a pressure-sensitive adhesive and method of making
    Patent number: 6287685
    Abstract: The invention provides a process for bonding a pressure-sensitive adhesive to a rubber article. The process includes the steps of heat laminating a heat-activatable adhesive bearing a primer layer to the rubber article at a temperature of at least 100° C. and bonding the pressure-sensitive adhesive to the primer layer. The invention also provides an assembly comprised of a shaped rubber article heat laminated to an adhesive bearing a primer. The invention also provides article of manufacture for bonding a rubber article to a surface.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: September 11, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Jeffrey R. Janssen, Michael A. Johnson, Ulrich Kunze
  • Sheet for forming burned pattern
    Patent number: 6284369
    Abstract: A sheet for forming a burned pattern is provided which comprises a ceramic green sheet layer (1) to be burned and a pressure-sensitive adhesive layer (2), wherein the pressure-sensitive adhesive layer comprises either a single layer decomposable at low temperature and leaving a decreased amount of carbonaceous residues after burning or a laminated layer comprising at least two layers of an inner pressure-sensitive adhesive layer (21) which is the low-temperature-decomposable layer and an outer pressure-sensitive adhesive layer (22) having resistance to water washing. The pressure-sensitive adhesive layer of the sheet for forming a burned pattern shows excellent provisional adhesion to adherends before burning. In particular, the outer pressure-sensitive adhesive layer shows such adhesive strength that the sheet is prevented from peeling off upon water washing.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: September 4, 2001
    Assignee: Nitto Denko Corporation
    Inventors: Katsuya Kume, Yutaka Tosaki, Hidetoshi Itou, Katsuyuki Okazaki, Mitsuo Kuramoto
  • Index tab label insert sheets
    Patent number: 6284338
    Abstract: A multilayer index tab label insert sheet assembly with removable tab label inserts. An exemplary label insert sheet includes a face stock having a plurality of foldable tab label inserts, a release coated backing sheet generally coextensive with the face stock sheet, a pressure sensitive adhesive coating between the face stock sheet and the release coated backing sheet to secure those sheets together, and a patterned varnish coating underneath the index tab label inserts to allow the label inserts to be readily removed from the release coated backing sheet.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: September 4, 2001
    Assignee: Avery Dennison Corporation
    Inventors: Bruce D. Bauman, Fiona J. Mills, Russ D. Pollman
  • Photopolymerizable composition, pressure-sensitive flame-retardant adhesive, and adhesive sheets
    Patent number: 6284368
    Abstract: Adhesive sheets using an acrylic pressure-sensitive flame-retardant adhesive having excellent properties such as adhesive force and holding power at high temperature and also having a self fire-extinguishing property which instantaneously extinguishes fire, i.e., a flame-retardance, are provided. A photopolymerizable composition comprising a) 100 parts by weight of a monomer (or the oligomer thereof) comprising 70 to 100% by weight of a (meth)acrylic acid alkyl ester having on the average a carbon number of 2 to 14 in the alkyl group and 30 to 0% by weight of a monoethylenically unsaturated monomer copolymerizable with the ester, b) 0.02 to 5 parts by weight of a polyfunctional (meth)acrylate as a crosslinking agent, c) 0.01 to 5 parts by weight of a photopolymerization initiator, and d) 10 to 180 parts by weight of a flame retardant having a melting point of at least 60° C.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: September 4, 2001
    Assignee: Nitto Denko Corporation
    Inventors: Shigeki Muta, Takao Yoshikawa, Masahiro Oura
  • Adhesive tape
    Patent number: 6280840
    Abstract: Adhesive tape for a bond which can be redetached without residue or damage by pulling, having a backing coated on one or both sides with a self-adhesive composition, characterized in that a) a self-adhesive composition whose ratio of tear strength to stripping force (peel strength) at a peel angle of less than 10° to the bond surface is greater than 1.2:1 is applied to at least one of the two sides of the backing, b) the backing has been subjected to controlled pretreatment/damaging in such a way that the detachment force (stripping force) is lower than that of a similar self-adhesive tape with a backing which has not been so pretreated/damaged, and c) the tear strength of the backing is insufficient for redetachment without residue or damage.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: August 28, 2001
    Assignee: Beiersdorf AG
    Inventors: Bernd Lühmann, Andreas Junghans
  • Surface-protective pressure-sensitive adhesive sheet and pressure-sensitive adhesive composition for surface-protective pressure-sensitive adhesive sheet
    Patent number: 6274235
    Abstract: The present invention is to provide a pressure-sensitive adhesive sheet for surface protection, which has a substrate containing an ethylene/propylene copolymer and an ethylene/1-butene copolymer in a weight ratio of 60:40 to 90:10, and an adhesive composition for pressure-sensitive adhesive sheets for surface protection, which contains 5 to 30 parts by weight of a rosin resin tackifier based on 100 parts by weight of a blend comprising 50 to 100% by weight of a polyisobutylene and/or a butyl rubber and 50 to 0% by weight of a polybutene.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: August 14, 2001
    Assignee: Nichiban Company Limited
    Inventors: Syuji Ichimura, Yoshinaga Tsuzuki, Kinnosuke Hino, Mikihiro Endo, Kazuhiro Kono
  • Breathable film cover for window structures
    Patent number: 6270887
    Abstract: A breathable film cover for transparent plastic plates employed as windows and the like. A metalized plasticized polyvinyl chloride film is adhesively laminated to a polycarbonate or polyacrylate plate by means of an adhesive having a UV absorber. The plasticized PVC film allows for the escape of moisture emanating as a result of degasification of the polycarbonate or polyacrylate plates. The permeability of the PVC or polyvinyl chloride film to moisture allows the metalized plasticized polyvinyl chloride film to remain adhered to the plates without bubbles, craters or tunnels.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: August 7, 2001
    Assignee: Morgan Adhesives Company
    Inventors: Robert G. Stocq, Claude Pasti