Abstract: The invention relates to a biaxially oriented polyester film, preferably PET film, which has a hydrophilic coating on at least one surface. The coating composition used to form the hydrophilic coating includes water, a sulfopolyester, a surfactant, and optionally an adhesion-promoting polymer. The inventive films have a hydrophilic surface which inhibit condensation of water droplets on the films.
Type:
Grant
Filed:
October 10, 2006
Date of Patent:
April 20, 2010
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Matthias Konrad, Herbert Peiffer, Gottfried Hilkert
Abstract: A process is described for production of a biaxially oriented film which comprises at one crystallizable thermoplastic as main constituent and comprises at least 500 ppm, based on the weight of thermoplastic, of a pigment. The production process uses at least 20% by weight, based on the weight of the film, of recycled material of the same type whose molecular weight has been increased by condensation processes.
Type:
Grant
Filed:
June 30, 2005
Date of Patent:
April 20, 2010
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Ulrich Kern, Ursula Murschall, Bodo Kuhmann, Guenther Crass
Abstract: The invention relates to a biaxially oriented polyester film having at least one base layer (B) which includes from 0.25 to <1.0% by weight of SiO2 and from 0.25 to <1.0% by weight of TiO2. The invention further relates to a process for the production of the film and to its use. The inventive film features characteristic surfaces and defined optical properties, and has good suitability for use in the industrial sector.
Type:
Grant
Filed:
November 22, 2005
Date of Patent:
March 2, 2010
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Matthias Konrad, Martin Jesberger, Bodo Kuhmann
Abstract: The present invention relates to a biaxially oriented polyester film, which a) has a base layer B, which includes a yellow dye and a red dye, b) has, on each side of the base layer B, at least one layer (A or C) which includes, based on the weight of layer A or C, less than 0.01% by weight of the yellow dye and less than 0.01% by weight of the red dye, and c) the film has one absorption maximum lying at from 400 to 500 nm in the UV/visible spectrum from 400 to 800 nm. Preferred dyes are anthraquinone dyes and perinone dyes; the polyester is preferably PET. After metallization or lamination, the film has a gold appearance, and is a suitable packaging material.
Type:
Grant
Filed:
June 13, 2008
Date of Patent:
March 2, 2010
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Oliver Klein, Matthias Konrad, Holger Kliesch, Bodo Kuhmann
Abstract: The invention relates to biaxially oriented polyester films which are suitable for lamination to sheet metal; the invention in particular relates to a polyester film which (based on the weight of polyester) comprises from 1 to 8% by weight of isophthalate-derived units, and also comprises not only particles whose median diameter is from 0.1 to 2.0 ?m but also particles whose median diameter is from >2.5 ?m to <8 ?m. The invention further relates to a process for production of these films and to their use.
Type:
Grant
Filed:
May 14, 2007
Date of Patent:
September 15, 2009
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Matthias Konrad, Bodo Kuhmann, Gottfried Hilkert
Abstract: The present invention is directed to a biaxially oriented, heat-set, at least two-layer coextruded film formed from polyethylene terephthalate (PET) or polyethylene 2,6-naphthalate (PEN) that optionally includes additional comonomer-derived units. The film includes a base layer and at least one outer layer. The base layer includes a white pigment and a laser absorber which has been coated with a carbonizing polymer.
Type:
Grant
Filed:
September 24, 2007
Date of Patent:
June 2, 2009
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Cynthia Bennett, Holger Kliesch, Bodo Kuhmann, Martin Jesberger
Abstract: The invention relates to a transparent, electrically conductive, biaxially oriented, single- or multilayer polyester film which includes a coating composed of (a) conductive (ITO) indium tin oxide particles or (ATO) antimony tin oxide particles, or of a mixture of these. The film further include other conductive components (b). The other conductive components (b) may be present either in the coating including ITO particles and/or ATO particles or in a layer in contact therewith. The conductive component (b) may also be a metal layer in contact with the ITO and/or ATO. The film is only oriented or relaxed prior to application of the ITO and/or ATO coating. The invention further relates to a process for the production of the film, and its use.
Type:
Grant
Filed:
March 18, 2005
Date of Patent:
May 19, 2009
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Dagmar Klein, Holger Kliesch, Thorsten Kiehne, Bodo Kuhmann, Franz Hora, Gottfried Hilkert, Manfred Wiederhold
Abstract: The invention relates to a biaxially oriented polyester film having a base layer (B) which comprises at least 80% by weight of a polyester comprised of from 55 to 90 mol % of units deriving from at least two aromatic dicarboxylic acids and of from 5 to 45 mol % of units deriving from at least one aliphatic dicarboxylic acid, where the total of the dicarboxylic-acid-derived molar percentages is 100. The film features ultimate tensile strength of ?100 N/mm2 and modulus of elasticity of ?3000 N/mm2.
Type:
Grant
Filed:
April 3, 2007
Date of Patent:
April 7, 2009
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Oliver Klein, Herbert Peiffer, Gottfried Hilkert
Abstract: This invention relates to 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) 80-98% by weight of polyester and b) 2-10% by weight of inorganic and/or organic particles having an average diameter d50 of from 2.5 to 8.0 ?m (based on the mass of the top layer (A)), wherein c) the polyester being composed of 12-89 mol % of units which derive from at least one aromatic dicarboxylic acid and 11-88 mol % of units which derive from at least one aliphatic dicarboxylic acid, the sum of the dicarboxylic acid-derived molar percentages being 100, d) the ratio of particle size d50 and layer thickness dA of the top layer (A) being greater than 1.2 and e) the layer thickness of the top layer (A) dA being from 1.0 to 5 ?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:
October 28, 2008
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Herbert Peiffer, Matthias Konrad, Harald Mueller, Paul Broemmel
Abstract: Coextruded, biaxially oriented polyester films which have a base layer (B) and have a heatsealable outer layer (A) that can be peeled from APET/CPET and from CPET, where the outer layer (A) includes a) from 60 to 99% by weight of polyester and b) from 1 to 10% by weight of inorganic and/or organic particles with a median diameter d50 of from 2 to 8 ?m, and where c) the polyester is composed of from 12 to 89 mol % of units derived from at least one aromatic dicarboxylic acid and of from 11 to 88 mol % of units derived from at least one aliphatic dicarboxylic acid, and the non-sealable surface of the film has been rendered adhesion-promoting. The films of the invention are suitable as a packaging material for foods and other consumable items, and as a lid film for APET/CPET or CPET trays.
Type:
Grant
Filed:
November 9, 2004
Date of Patent:
July 8, 2008
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Herbert Peiffer, Bart Janssens, Matthias Konrad, Andreas Stopp
Abstract: This invention relates to a single- or multilayer, oriented film formed from polyester and at least one inorganic black pigment. The inventive films include at least one layer which has, alongside polyester, an amount of from 0.5 to 75% by weight of particles incorporating iron oxide as black pigment.
Type:
Grant
Filed:
April 18, 2006
Date of Patent:
July 8, 2008
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Holger Kliesch, Thorsten Kiehne, Franz Hora, Ingo Fischer
Abstract: The invention relates to an aqueous coating composition which comprises a mixture of polyvinylpyrrolidone, a surfactant and optionally an adhesion-promoting polymer. This mixture is suitable for inline coating of biaxially oriented polyester films. The thus obtained films feature a characteristic hydrophilic surface which prevents the fogging of the films with water droplets.
Type:
Grant
Filed:
October 4, 2005
Date of Patent:
June 10, 2008
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Matthias Konrad, Dagmar Klein, Herbert Peiffer, Gottfried Hilkert
Abstract: The present invention relates to a transparent, hot-embossable, biaxially oriented polyester film having a base layer (B), an amorphous outer layer (A) with a coating on this outer layer (A), and a crystalline outer layer (c). The invention further relates to the use of such film and to a process for its production.
Type:
Grant
Filed:
October 19, 2007
Date of Patent:
May 27, 2008
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Matthias Konrad, Bodo Kuhmann, Gottfried Hilkert
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
Abstract: Coextruded, biaxially oriented polyester films which have a white base layer (B) and have a heatsealable outer layer (A) that can be peeled from APET/CPET and from CPET, where the outer layer (A) includes a) from 80 to 99% by weight of polyester and b) from 1 to 10% by weight of inorganic and/or organic particles with a median diameter d50 of from 2.5 to 12 ?m, and where c) the polyester is composed of from 12 to 89 mol % of units derived from at least one aromatic dicarboxylic acid and of from 11 to 88 mol % of units derived from at least one aliphatic dicarboxylic acid, and d) the ratio calculated from the particle size d50 of the particles and the layer thickness dA of the outer layer (A) is greater than or equal to 1, and the base layer (B) comprises an inorganic white pigment and/or a polymer incompatible with polyester. The films of the invention are suitable as a packaging material for foods and other consumable goods or as a lid film for APET/CPET or CPET trays.
Type:
Grant
Filed:
November 9, 2004
Date of Patent:
February 12, 2008
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Herbert Peiffer, Bart Janssens, Gottfried Hilkert, Paul Broemmel
Abstract: The invention more particularly 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) 80-98% by weight of polyester and b) 2-10% by weight of inorganic and/or organic particles having an average diameter d50 of from 2.0 to 8.0 ?m (based on the mass of the top layer (A)), wherein c) the polyester being composed of 30-95 mol % of units which derive from at least one aromatic dicarboxylic acid and 5-70 mol % of units which derive from at least one aliphatic dicarboxylic acid, d) the ratio of particle size d50 and layer thickness dA of the top layer (A) being greater than 1.3 and e) the layer thickness of the top layer (A) dA being from 0.5 to 2.5 ?m.
Type:
Grant
Filed:
September 29, 2004
Date of Patent:
October 30, 2007
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Herbert Peiffer, Gottfried Hilkert, Cynthia Bennett, Andreas Stopp
Abstract: The invention relates to an at least two-layer polyester film with a total thickness of from 5 to 200 ?m which comprises, alongside polyethylene terephthalate, from 2 to 20% by weight—based on the weight of the entire film—of polyethylene naphthalate (PEN), where at least one outer layer comprises less than 0.1% by weight of PEN (based on the weight of this outer layer).
Abstract: The invention relates to a single- or multilayer, oriented, film coated with an aminosilane compound and composed of polyester which comprises an additive which, on irradiation with electromagnetic radiation, forms metal nuclei on which further metal can be deposited in further steps of the process. The invention further relates to a process for producing this film and to its use in printed circuit boards, ribbon cables, smart cards, RFID labels, membrane keyboards, and film-based circuits of any type.
Type:
Grant
Filed:
September 15, 2004
Date of Patent:
August 28, 2007
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Holger Kliesch, Thorsten Kiehne, Gottfried Hilkert, Ingo Fischer
Abstract: The invention relates to a hydrolysis-stable polyester whose thickness is preferably in the range from 0.4 to 500 ?m. The film comprises polyester and at least one hydrolysis stabilizer and is distinguished by its low hydrolysis rate. The invention furthermore relates to a process for the production of the film and its use.
Type:
Grant
Filed:
September 8, 2005
Date of Patent:
July 10, 2007
Assignees:
Mitsubishi Polyester Film GmbH, Schaefer Additivsysteme GmbH
Inventors:
Holger Kliesch, Bodo Kuhmann, Thorsten Kiehne, Ingo Fischer, Gottfried Hilkert, Volker Schaefer
Abstract: The invention relates to a white opaque film formed from a crystallizable thermoplastic, preferably thermo-plastic polyester in the form of polyethylene terephthalate, barium sulfate and titanium dioxide as pigments, at least one optical brightener, and optionally at least one dye soluble in the thermoplastic. The film optionally includes, an additional functionality, e.g. in the form of an adhesive coating, of a coating with aminosilane or silicone, of UV resistance, of hydrolysis resistance, of flame retardancy, or of a sealable outer layer.
Type:
Grant
Filed:
May 31, 2006
Date of Patent:
July 3, 2007
Assignee:
Mitsubishi Polyester Film GmbH
Inventors:
Ulrich Kern, Ursula Murschall, Bodo Kuhmann, Martin Jesberger