Patents Assigned to Trespaphan GmbH
  • Biaxially oriented electrical insulation film having improved shrinkage at elevated temperatures
    Patent number: 6537652
    Abstract: A biaxially oriented polypropylene film is described. The n-heptane-insoluble content of the film has a chain isotacticity index, measured by 13-C-NMR spectroscopy, of at least 95%. In particular, the film should have the lowest possible shrinkage (transverse shrinkage and longitudinal shrinkage) at elevated temperatures. In addition, a process for the production of the polypropylene film and its use is described.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: March 25, 2003
    Assignee: Hoescht Trespaphan GmbH
    Inventors: Karl-Heinz Kochem, Kerstin Muller-Nagel
  • Polymeric films
    Patent number: 6521333
    Abstract: Biaxially oriented films having a substantially non-voided pigmented core layer of a propylene homopolymer, an intermediate layer of a voided propylene homopolymer, and two outer layers of a heat sealable olefin polymer. Such films can be heat sealed to form seals with high seal integrity.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: February 18, 2003
    Assignee: Hoechst Trespaphan GmbH
    Inventor: Stuart Blyth
  • Polyolefin film, its use, and process for its production
    Patent number: 6506500
    Abstract: A biaxially oriented polyolefin film having more than one layer and made from a base layer and from at least one outer layer. The base layer include a fatty amide and the outer layer include at least 80% by weight of a linear olefin polymer. The film is suitable, for example, for producing a film laminate by melt extrusion of a polyethylene layer.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: January 14, 2003
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Wolfgang Rasp, Detlef Klaus Busch
  • Labels
    Publication number: 20020197463
    Abstract: Polymeric films including a layer of propylene polymer resin having microvoids therein, the microvoids having been formed by stretching a web containing the beta-form of polypropylene, have shown low static cling when being unwound from rolls in labelling operations and also during destacking of pre-formed labels. The invention provides labels formed from such films.
    Type: Application
    Filed: August 6, 2002
    Publication date: December 26, 2002
    Applicant: Hoechst Trespaphan GmbH
    Inventors: Paul Malcolm Mackenzie Davidson, Rebecca Karen Govier, Helen Ann Biddiscombe, Marc Fritz Manfred OTT
  • Labels
    Patent number: 6444301
    Abstract: Polymeric films including a layer of propylene resin having microvoids therein, the microvoids having been formed by stretching a web containing the beta-form of polypropylene, have shown low static cling when being unwound from rolls in labelling operations and also during destacking of pre-formed labels. The invention provides labels formed from such films.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: September 3, 2002
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Paul Malcolm Mackenzie Davidson, Rebecca Karen Govier, Helen Ann Biddiscombe, Marc Fritz Manfred Ott
  • Method of priming polyolefin articles for coating
    Patent number: 6368677
    Abstract: A method for providing a waterborne, inorganic barrier coating to a polyolefin substrate is described. The method involves applying a primer composition containing a vinyl polymer, wherein at least 75% of the polymer repeat units contain side groups having hydroxyl moieties, to the substrate. This primer coating facilitates the application and binding of the subsequently applied barrier coating composition to the substrate.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: April 9, 2002
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Michael A. Hubbard, James A. McCaulley, Douglas R. Holcomb
  • Polymeric films
    Publication number: 20020015834
    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: Application
    Filed: September 24, 2001
    Publication date: February 7, 2002
    Applicant: Trespaphan GmbH
    Inventor: Helen Ann Biddiscombe
  • Polymeric films
    Patent number: 6309756
    Abstract: Polypropylene films having a base layer of a propylene polymer with at least one matte outer layer of a blend of a polyether block polyamide, polypropylene, and polybutene-1, the polybutene-1 representing from 40 to 60 wt. % of the blend. Such films have shown good antistatic properties combined with particularly low heat seal thresholds compared with similar films without the polybutene-1 in the outer layer or layers.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: October 30, 2001
    Assignee: Hoechst Trespaphan GmbH
    Inventor: Paul Thomas Alder
  • 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
  • Method of priming polyolefin articles for coating
    Patent number: 6254994
    Abstract: A method for providing a waterborne, inorganic barrier coating to a polyolefin substrate is described. The method involves applying a primer composition containing a vinyl polymer, wherein at least 75% of the polymer repeat units contain side groups having hydroxyl moieties, to the substrate. This primer coating facilitates the application and binding of the subsequently applied barrier coating composition to the substrate.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: July 3, 2001
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Michael A. Hubbard, James A. McCaulley, Douglas R. Holcomb
  • Heat sealed polymeric films
    Patent number: 6235143
    Abstract: A method of heat sealing a heat sealable multilayer film having a first film surface which is heat sealable to itself or to other surfaces and a second film surface including particles of a cross-linked polymethyl methacrylate as an antiblock agent, the method comprising sliding the said second film surface over a heated heat sealing surface before effecting heat sealing of the film to itself or to another surface using said heated heat sealing surface.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: May 22, 2001
    Assignee: Trespaphan GmbH
    Inventors: Allan J. Crighton, Paul T. Alder
  • Method for controlling the winding density of film rolls
    Patent number: 6189825
    Abstract: In a method and apparatus for controlling the winding density of film rolls, a desired and an actual winding density of a film roll are determined and compared with one another. The quantity obtained from the comparison is multiplied by an adapting or damping factor &agr;, and the control output resulting therefrom is adapted to the film contact pressure and the film pull. The values thus obtained are fed as manipulated variables to a contact pressure actuator and a pull actuator for the film.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: February 20, 2001
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Dieter Mathieu, Robert Schmidt
  • Method of priming poly(ethylene terephthalate) articles for coating
    Patent number: 6086991
    Abstract: A barrier-coated polyester film comprises a polyethylene terphthalate substrate, a primer composition containing a vinyl polymer wherein at least 75% of the polymer repeat units contain side groups having hydroxyl moieties, and a waterborne, inorganic barrier coating. The primer coating facilitates the application and binding of the subsequently applied waterborne barrier coating composition to the substrate.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: July 11, 2000
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Michael A. Hubbard, James A. McCaulley, Douglas R. Holcomb
  • Lithium and potassium copolysilicate barrier coatings
    Patent number: 6071624
    Abstract: A method and novel barrier coating solutions are provided for imparting improved vapor, gas or aroma permeability characteristics to a coated polymeric substrate. The method and solutions employ a lithium-potassium copolysilicate of the formula (Li.sub.2 O).sub.x (K.sub.2 O).sub.1-x (SiO.sub.2).sub.y. For the method, y is between 1 and 10, if x is less than 1; or y is greater than 4.6, if x is 1. For the novel coating solutions, y is greater than 4.6 if x is less than 1; or x is greater than 0.5 if y is between 1 and 10.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: June 6, 2000
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Michael A. Hubbard, James A. McCaulley, Frank P. Battito, Douglas R. Holcomb
  • Transparent barrier coatings exhibiting reduced thin film interference
    Patent number: 6051296
    Abstract: A vapor barrier coating solution for poly(ethylene terephthalate) (PET) polymeric articles contains a metal polysilicate and transparent nanocrystalline titanium dioxide. The coating reduces interference between light reflected from the top surface of a coated PET polymeric article and the interface between the dried coating and said PET polymeric article. The coated articles are also provided.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: April 18, 2000
    Assignee: Hoechst Trespaphan GmbH
    Inventors: James A. McCaulley, Michael A. Hubbard
  • Vapor barrier coating for polymeric articles
    Patent number: 6013128
    Abstract: A vapor barrier coating solution for polymeric articles is provided which contains a selected layered silicate dispersed in a cationic aqueous metal polysilicate, wherein the weight fraction layered silicate of total inorganic solids in the dry coating ranges from above 0 to about 99.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: January 11, 2000
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Michael A. Hubbard, James A. McCaulley, Steven F. Nielsen
  • Method of coating pre-primed polyolefin films
    Patent number: 6004680
    Abstract: A method for providing improved adhesion of a waterborne, inorganic barrier coating to polyolefin substrate is described. The method involves corona-treatment of the substrate and applying a barrier coating composition.The polyolefin substrate is coated with an acrylic primer layer and then an inorganic barrier layer of a copolysilicate of lithium and potassium is applied.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: December 21, 1999
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Jean-Claude Abed, Bobby N. Furr, Bettina E. Bonsall, Douglas R. Holcomb
  • Peelable, heat-sealable, multilayered polyolefin film, process for the production thereof, and the use thereof
    Patent number: 5997968
    Abstract: A multilayer polyolefin film comprising of at least three coextruded layers comprising an opaque base layer, an intermediate layer, and an outer peelable surface layer composed of two incompatible polyolefins, wherein the intermediate layer contains at least 80% by weight of a polyolefin having a lower melting point or lower glass transition temperature than the polyolefin forming the base layer.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: December 7, 1999
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Thomas Dries, Lothar Hoppenstein, Adolf Wilhelm
  • Polymeric films
    Patent number: 5972490
    Abstract: Biaxially oriented polyolefin films comprising a core layer of propylene polymer, an intermediate layer of a non-voided, substantially non-pigmented propylene polymer on the core layer, and an outer skin layer of a polyolefin including titanium dioxide as a pigment are disclosed. Such films have good gloss.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: October 26, 1999
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Allan J Crighton, Helen A Biddiscombe
  • Oriented multilayer polyolefin film which is heat-sealable on both sides, its use, and process for its production
    Patent number: 5945225
    Abstract: Oriented multilayer polyolefin film which is heat-sealable on both sides, its use, and process for its production.An oriented multilayer polyolefin film which is heat-sealable on both sides and is printable, made from at least one base layer and, on both sides, heat-sealable outer layers, which film contains a hydrocarbon resin. Both outer layers contain silicone oil and at least one surface of the film is surface-treated.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: August 31, 1999
    Assignee: Hoechst Trespaphan GmbH
    Inventors: Angela Speith-Herfurth, Wolfgang Rasp, Robert Hansohn