Patents by Inventor Stefan Bartsch

Stefan Bartsch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10843447
    Abstract: A transparent, peelable polyester film is provided with clarity greater than 80% including a biaxially oriented polyester film as base layer (B) and an offline coated heat-sealable outer layer (A) that is peelable relative to ready-meal APET or RPET trays. The heat-sealable and peelable outer layer (A) includes from 85 to 99 wt % polyester and from 1 to 15 wt % other substances, the polyester including of from 25 to 95 mol % of units derived from at least one aromatic dicarboxylic acid and from 5 to 75 mol % of units derived from at least one aliphatic dicarboxylic acid. The polyester incorporates at least 10 mol % of units derived from diols having more than 2 carbon atoms. The mass of the dry outer layer (A) is from 1 to 5 g/m2. Production processes for the foregoing film, and use thereof as scalable film for ready-meal trays is also provided.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: November 24, 2020
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Herbert Peiffer, Bodo Kuhmann, Stefan Bartsch, Martin Jesberger, Tobias Rentzsch
  • Patent number: 10618260
    Abstract: The present invention relates to a transparent packaging for vacuum forming including a specific biaxially oriented thermoformable polyester foil as lower foil (A) and a specific biaxially oriented polyester foil as upper foil (B) that can be heat-sealed to the lower foil (A), and to a process for the production of such packing, and also use thereof.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: April 14, 2020
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Herbert Peiffer, Martin Jesberger, Stefan Bartsch, Tobias Rentzsch
  • Publication number: 20190390002
    Abstract: The present invention relates to a transparent, biaxially oriented, thermoformable polyester film including at least 85% by weight of a copolyester whose dicarboxylic acid components derive to an extent of 85 to 94 mol % from terephthalic acid-based units and to an extent of 6 to 15 mol % from isophthalic acid-based units. The inventive films exhibit a surface elasticity modulus in the range from 4500 to 6400 N/mm2; a sum total of the strengths (?5) in longitudinal direction and in transverse direction in the range from 170 to 220 MPa; a density of less than 1390 kg/m3; a haze of less than 2.0 %; a clarity of at least 85%; a gloss of at least 120 and a thickness in the range from 50 to 300 ?m. The invention further relates to processes for producing such films, and to the use thereof.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 26, 2019
    Inventors: Herbert PEIFFER, Martin JESBERGER, Stefan BARTSCH, Bodo KUHMANN, Viktor FISCHER, Matthias KONRAD
  • Publication number: 20190389187
    Abstract: The present invention relates to a transparent packaging for vacuum forming including a specific biaxially oriented thermoformable polyester foil as lower foil (A) and a specific biaxially oriented polyester foil as upper foil (B) that can be heat-sealed to the lower foil (A), and to a process for the production of such packing, and also use thereof.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 26, 2019
    Inventors: Herbert PEIFFER, Martin JESBERGER, Stefan BARTSCH, Tobias RENTZSCH
  • Publication number: 20190284433
    Abstract: The present invention relates to biaxially oriented polyester films having a release coating of polyolefin wax on at least one side as release film for applying thin polyacrylate layers from organic solvents by means of a printing process. The invention further relates to a method for producing such films and also to their use.
    Type: Application
    Filed: March 12, 2019
    Publication date: September 19, 2019
    Inventors: Petr KOLAR, Claudia LOHRE, Yavuz ÜNKER, Matthias KONRAD, Stefan BARTSCH
  • Publication number: 20190030874
    Abstract: A transparent peelable polyester film is provided having a base layer (B) with first and second surfaces. A layer (C) is applied on the base layer (B). A heat-sealable layer (A), peelable to APET AND RPET, is applied on the opposing surface of the base layer (B). The heat-sealable and peelable outer layer (A) is formed from (a) from 85 to 99% by weight of polyester and (b) from 1 to 15% by weight of other substances. The polyester is formed from 25 to 95 mol % of units derived from at least one aromatic dicarboxylic acid and from 5 to 75 mol % of units derived from at least one aliphatic dicarboxylic acid, and the polyester includes at least 10 mol % of units derived from linear or branched diols having more than 2 and the layer (C) includes crosslinked acrylate and/or methacrylate-based copolymers.
    Type: Application
    Filed: July 27, 2018
    Publication date: January 31, 2019
    Inventors: Herbert PEIFFER, Stefan BARTSCH, Martin JESBERGER, Tobias RENTZSCH
  • Publication number: 20180134019
    Abstract: The present invention relates to a transparent, peelable polyester film incorporating at least one biaxially oriented polyester film (=base layer (B)) and at least one peelable covering layer (A) coated offline thereon, in which the covering layer (A) is at least 85 wt. % made up of a polyester of aromatic and aliphatic dicarboxylic acids and aliphatic diols, and the arithmetic mean value of the absolute ordinate values Sb of the covering layer (A) is less than 300 nm and the reduced peak height Spk of the covering layer (A) is less than 700 nm. The invention further relates to a production process for this peelable film and use thereof as sealing film for APET and/or RPET meal trays.
    Type: Application
    Filed: November 9, 2017
    Publication date: May 17, 2018
    Inventors: Herbert PEIFFER, Stefan BARTSCH, Martin JESBERGER, Petr KOLAR
  • Publication number: 20170341355
    Abstract: A transparent, peelable polyester film is provided with clarity greater than 80% including a biaxially oriented polyester film as base layer (B) and an offline coated heat-sealable outer layer (A) that is peelable relative to ready-meal APET or RPET trays. The heat-sealable and peelable outer layer (A) includes from 85 to 99 wt % polyester and from 1 to 15 wt % other substances, the polyester including of from 25 to 95 mol % of units derived from at least one aromatic dicarboxylic acid and from 5 to 75 mol % of units derived from at least one aliphatic dicarboxylic acid. The polyester incorporates at least 10 mol % of units derived from diols having more than 2 carbon atoms. The mass of the dry outer layer (A) is from 1 to 5 g/m2. Production processes for the foregoing film, and use thereof as scalable film for ready-meal trays is also provided.
    Type: Application
    Filed: May 15, 2017
    Publication date: November 30, 2017
    Inventors: Herbert PEIFFER, Bodo KUHMANN, Stefan BARTSCH, Martin JESBERGER, Tobias RENTZSCH
  • Patent number: 7364800
    Abstract: The invention relates to an in-line coated, biaxially oriented polyester film in which at least one surface has a coating formed from the dried residue of an aqueous coating composition, where the aqueous coating composition includes from 1 to 20% by weight (based on the weight of the coating composition) of EAA (ethylene-acrylic acid copolymer) particles whose median particle size (d50 value) is from 1 to 200 ?m.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: April 29, 2008
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Martin Jesberger, Holger Kliesch, Gottfried Hilkert, Stefan Bartsch
  • Publication number: 20070092695
    Abstract: The invention relates to an in-line coated, biaxially oriented polyester film in which at least one surface has a coating formed from the dried residue of an aqueous coating composition, where the aqueous coating composition includes from 1 to 20% by weight (based on the weight of the coating composition) of EAA (ethylene-acrylic acid copolymer) particles whose median particle size (d50 value) is from 1 to 200 ?m.
    Type: Application
    Filed: October 18, 2006
    Publication date: April 26, 2007
    Inventors: Martin Jesberger, Holger Kliesch, Gottfried Hilkert, Stefan Bartsch
  • Patent number: 7122239
    Abstract: The invention relates to an opaque, biaxially oriented polyester film comprising at least one base layer, characterized in that at least this base layer contains a cyclic olefin copolymer (COC) in a concnetration of 2 to 60 wt. % in relation to the base layer, the glass transition temperature of said cyclic olefin copolymer (COC) being 70 to 270° C.; and in that at least one surface is provided with a coupling agent.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: October 17, 2006
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Cynthia Bennett, Gottfried Hilkert, Stefan Bartsch, Herbert Peiffer
  • Patent number: 6962740
    Abstract: Three-layer, highly oriented polyester films having an A-B-C layer construction, preferably made of polyethylene terephthalate, which, in addition to a base layer B have a smooth surface layer A which contains no external particles and a rough surface layer C which contains external particles such as antiblocking agents or pigments, preferably SiO2, in defined amounts and particle sizes, and the surface layer C is additionally provided with an acrylate-containing layer D feature in particular good producibility and processibility, high gloss of the film surface A and low opacity. The very smooth surface A is suitable in particular for coating with materials, for example SiOx, by means of plasma polymerization of hexamethyldisiloxane by the CVD or PECVD method, which provides the film with a high oxygen barrier and is suitable in particular as packaging for light- and air-sensitive foods or other consumable items.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: November 8, 2005
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Bart Janssens, Herbert Peiffer, Stefan Bartsch
  • 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
  • Publication number: 20040247909
    Abstract: The invention relates to a matte, biaxially oriented polyester foil consisting of at least 60 percent by weight of thermoplastic polyester, pigments system favoring the degree of mattness and other common additives. The foil has planar orientation &Dgr;p≦0.164 and is characterized by a matte surface or appearance. The invention also relates to a method for the production of said foil and to its utilization as packaging foil or for application in the industrial sector.
    Type: Application
    Filed: April 19, 2004
    Publication date: December 9, 2004
    Inventors: Stefan Bartsch, Herbert Peiffer, Bart Janssens
  • Patent number: 6797359
    Abstract: The invention relates to a metalized or ceramic-coated, biaxially oriented, sealable polyester film with at least one base layer (B), with a sealable outer layer (A), and with a further non-sealable outer layer (C). The sealable outer layer (A) has a minimum sealing temperature (fin) of not more than 110° C. and a seal seam strength (fin) of at least 1.3 N/15 mm of film width. The two outer layers (A) and (C) are characterized by particular features. The film of the invention is particularly suitable for use in flexible packaging, and particularly and specifically for use on systems which operate in a vacuum.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: September 28, 2004
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Bart Janssens, Herbert Peiffer, Stefan Bartsch
  • Publication number: 20040076818
    Abstract: Three-layer, highly oriented polyester films having an A-B-C layer construction, preferably made of polyethylene terephthalate, which, in addition to a base layer B have a smooth surface layer A which contains no external particles and a rough surface layer C which contains external particles such as antiblocking agents or pigments, preferably SiO2, in defined amounts and particle sizes, and the surface layer C is additionally provided with an acrylate-containing layer D feature in particular good producibility and processibility, high gloss of the film surface A and low opacity. The very smooth surface A is suitable in particular for coating with materials, for example SiOx, by means of plasma polymerization of hexamethyldisilazane by the CVD or PECVD method, which provides the film with a high oxygen barrier and is suitable in particular as packaging for light- and air-sensitive foods or other consumable items.
    Type: Application
    Filed: October 10, 2003
    Publication date: April 22, 2004
    Inventors: Bart Janssens, Herbert Peiffer, Stefan Bartsch
  • Publication number: 20040028928
    Abstract: The invention relates to an opaque, biaxially oriented polyester film comprising at least one base layer, characterized in that at least this base layer contains a cyclic olefin copolymer (COC) in a concnetration of 2 to 60 wt. % in relation to the base layer, the glass transition temperature of said cyclic olefin copolymer (COC) being 70 to 270° C.; and in that at least one surface is provided with a coupling agent.
    Type: Application
    Filed: January 13, 2003
    Publication date: February 12, 2004
    Inventors: Cynthia Bennett, Gottfried Hilkert, Stefan Bartsch, Herbert Peiffer
  • Publication number: 20040009355
    Abstract: The invention relates to a metalized or ceramic-coated, biaxially oriented, sealable polyester film with at least one base layer (B), with a sealable outer layer (A), and with a further non-sealable outer layer (C). The sealable outer layer (A) has a minimum sealing temperature (fin) of not more than 110° C. and a seal seam strength (fin) of at least 1.3 N/15 mm of film width. The two outer layers (A) and (C) are characterized by particular features. The film of the invention is particularly suitable for use in flexible packaging, and particularly and specifically for use on systems which operate in a vacuum.
    Type: Application
    Filed: July 1, 2003
    Publication date: January 15, 2004
    Inventors: Bart Janssens, Herbert Peiffer, Stefan Bartsch
  • Patent number: 6627295
    Abstract: The invention relates to a biaxially oriented polyester film having at least one matt side and composed of at least one base layer (B) and of, applied to this base layer, at least one matt outer layer (A) which comprises at least 70% by weight of thermoplastic polyester and also to a pigment system with narrow grain size distribution. The invention further relates to the use of the film and to a process for its production. The film of the invention with the outer layer (A) has a characteristic matt surface and characteristic optical properties and has good suitability for use as a packaging film or for industrial applications.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: September 30, 2003
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Herbert Peiffer, Stefan Bartsch
  • Patent number: 6617035
    Abstract: The invention relates to a hot-sterilizable, biaxially oriented polyester film with good metal adhesion, with a base layer B containing at least 80% by weight of thermoplastic polyester, and with at least one adhesive layer which contains a mixture or a blend of two components I and II, wherein component I of the mixture or the blend contains a polyethylene terephthalate copolymer, which contains a sulfomonomer and wherein component II of the mixture or the blend contains acrylic copolymer.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: September 9, 2003
    Assignee: Mitsubishi Polyester Film GmbH
    Inventors: Herbert Peiffer, Stefan Bartsch, Richard Lee Davis