Biaxial Or Transverse To Travel Direction Patents (Class 264/290.2)
-
Patent number: 7189451Abstract: Multilayer, biaxially oriented polyester films which include as a constituent of the base layer B, a crystallizable polyester with increased diethylehe glycol content and/or increased polyethylene glycol content, and/or increased isophthalic acid content, preferably polyethylene terephthalate. The outer layers of the inventive films advantageously include at least one IR-reflective pigment and one UV stabilizer. The inventive films advantageously feature adjustable mattness, diffuse scattering power for visible light, high light transmittance, IR reflectance, and good thermoformability, and are suitable for thermally protective coatings or thermally protective packaging.Type: GrantFiled: July 1, 2005Date of Patent: March 13, 2007Assignee: Mitsubishi Polyester Film GmbHInventors: Thorsten Kiehne, Ursula Murschall, Holger Kliesch
-
Patent number: 7186455Abstract: The invention relates to a white, biaxially oriented film which comprises a crystallizable thermoplastic as main componet and is characterized by further comprising at least one UV-stabilizer, at least one white pigment and at least one flame-proofing agent, which is soluble in the thermoplastic and introduced directly, during the film production, by masterbatch technology, whereby the masterbatch is pre-conditioned by gradual heating under reduced pressure and with stirring.Type: GrantFiled: January 11, 2001Date of Patent: March 6, 2007Assignee: Mitsubishi Polyester Film GmbHInventors: Ursula Murschall, Andreas Stopp, Guenther Crass, Ulrich Kern
-
Patent number: 7186452Abstract: 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 the APET side of an APET/CPET tray, the heatsealable and peelable top layer (A) consisting of a) 50–95% by weight of polyester and b) 5–40% 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, and d) the layer thickness dA is from 1.3 to 3.0 ?m. The invention further relates to a process for producing the film and to its use.Type: GrantFiled: September 29, 2004Date of Patent: March 6, 2007Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Bart Janssens, Bodo Kuhmann, Harald Mueller
-
Patent number: 7157132Abstract: 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: GrantFiled: January 10, 2001Date of Patent: January 2, 2007Assignee: Mitsubishi Polyester Film GmbHInventors: Ursula Murschall, Ulrich Kern, Andreas Stopp, Guenther Crass, Herbert Peiffer
-
Patent number: 7157135Abstract: An embossable film for creating holograms and diffraction gratings and methods of producing the embossable films are provided. The embossable film includes a base layer and a co-extruded embossable layer that is coated with a transparent high refractive index (HRI) coating prior to embossing.Type: GrantFiled: June 9, 2004Date of Patent: January 2, 2007Assignee: Toray Plastics (America), Inc.Inventors: Wolfgang Decker, Christopher S. Curry, Hiroaki Watanabe, Arthur Eric Bartholomay
-
Patent number: 7147925Abstract: The invention relates to a single- or multilayer, white, biaxially oriented polyester film. Films of the invention are formed from thermoplastic polyester and are coated on at least one side with a water-soluble adhesion-promoting layer that includes a hydrolyzed amino-functional silane. The invention further relates to the use of the film and to a process for its production.Type: GrantFiled: April 18, 2005Date of Patent: December 12, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Thorsten Kiehne, Herbert Peiffer, Gottfried Hilkert
-
Patent number: 7147927Abstract: Disclosed are biaxially oriented polyester film produced from a polyester comprising: (1) diacid residues comprising at least 90 mole percent of terephthalic acid residues, naphthalenedicarboylic acid residues or combinations thereof; and (2) diol residues comprising at least 90 mole percent of 1,4-cyclohexanedimethanol residues; wherein the polyester comprises a total of 100 mole percent diacid residues and a total of 100 mole percent diol residues; wherein the polyester film is stretched at a ratio of about 2.5× to 3× in the machine direction (MD) and about 2.5× to 3× in the transverse direction (TD) at stretching temperatures between 90 and 1 10OC, wherein the stretched film is subsequently heat-set at an actual film temperature of from 260° C.Type: GrantFiled: June 25, 2003Date of Patent: December 12, 2006Assignee: Eastman Chemical CompanyInventors: Thomas Joseph Pecorini, Gary Darrel Boone
-
Patent number: 7144615Abstract: 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: GrantFiled: September 29, 2004Date of Patent: December 5, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Gottfried Hilkert, Matthias Konrad, Cynthia Bennett, Paul Broemmel
-
Patent number: 7141307Abstract: Polyester films which comprise not only thermoplastic polyester, e.g. polyethylene terephthalate, but also from 5 to 45% by weight of poly(m-xyleneadipamide) and optionally from 0.02 to 1% by weight of fillers, and which have, on at least one surface, an adhesion-promoting layer comprised of a hydrolyzed amino-functional silane. The films of the invention are produced by a sequential stretching process, and feature improved mechanical properties, such as a modulus of elasticity greater than 3500 N/mm2 in both orientation directions, high gloss, low haze, and very good barrier properties with respect to oxygen transmission. Films of the invention are therefore a suitable packaging material for foods and other consumable items, and as starting material for production of laminates via extrusion coating.Type: GrantFiled: June 14, 2005Date of Patent: November 28, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Oliver Klein, Herbert Peiffer, Matthias Konrad
-
Patent number: 7141293Abstract: 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: GrantFiled: September 29, 2004Date of Patent: November 28, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Bart Janssens, Gottfried Hilkert, Matthias Konrad
-
Patent number: 7132065Abstract: A process for making an optical film includes stretching a polyolefin film in a first direction and stretching the polyolefin film in a second direction different than the first direction forming a biaxially stretched polyolefin film. At least a portion of the stretching of the polyolefin film in the second direction occurs simultaneous with the stretching of the polyolefin film in the first direction. The biaxially stretched polyolefin film has a length and a width and substantially non-absorbing and non-scattering for at least one polarization state of visible light. The biaxially stretched polyolefin film has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal, an in-plane retardance being 100 nm or less and an out-of-plane retardance being 50 nm or greater.Type: GrantFiled: February 12, 2003Date of Patent: November 7, 2006Assignee: 3M Innovative Properties CompanyInventors: Richard C. Allen, Matthew B. Johnson, Fred J. Roska, Steven J. Rhyner, William W. Merrill, Joan M. Strobel, Kevin M. Hamer, John M. Klaeser, Sebastian F. Zehentmaier
-
Patent number: 7128968Abstract: Biaxially oriented polyester films which have at least one polyester-containing base layer (B) and at least one matt overlayer (A), the overlayer (A) comprising particles, preferably SiO2, which have a median diameter of from 2 to 10 ?m and have a SPAN98 of ?2, and the overlayer (A) comprising a polyester which has isophthalic acid units, feature in particular low opacity, high transparency, low gloss of the overlayer (A) and high processing reliability, and are therefore suitable as flexible packaging films even for use on high-speed packaging machinery.Type: GrantFiled: January 20, 2004Date of Patent: October 31, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Matthias Konrad, Herbert Peiffer, Gottfried Hilkert
-
Patent number: 7128969Abstract: 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: GrantFiled: April 23, 2002Date of Patent: October 31, 2006Assignee: Trespaphan GmbHInventors: Detlef Busch, Marlies Rosenbaum, Manfred Rosenbaum
-
Patent number: 7122617Abstract: The first film of the present invention is a film produced by solidifying a polybenzazole precursor that has been oriented in a given direction by the application of a magnetic or electric field. The second film of the present invention is a film produced by solidifying a polybenzazole that has been oriented in a given direction by the application of a magnetic or electric field. The first and second films have a strong anisotropy.Type: GrantFiled: July 25, 2003Date of Patent: October 17, 2006Assignee: Polymatech Co., Ltd.Inventors: Fumio Saitoh, Toru Kimura, Masayuki Tobita, Masatoshi Hasegawa
-
Patent number: 7122240Abstract: The invention relates to a transparent, biaxially oriented polyester film composed of at least one base layer (B) which comprises at least 80% by weight of thermoplastic polyester, and of, applied to this base layer (B), a transparent, high-gloss outer layer (A). The outer layer (A) of the invention comprises a specific pigment system which provides improved winding of the film and leads to a highly transparent film with a high-gloss surface (A). The invention further relates to a process for producing the film. The film may be used as a packaging film, in particular for metalizing or for ceramic coating, or for applications in the industrial sector, e.g. as a substrate for stamping films, and in particular to its use on high-speed packaging machinery.Type: GrantFiled: December 18, 2003Date of Patent: October 17, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Martin Mueller-Roosen, Gottfried Hilkert
-
Patent number: 7112360Abstract: The invention relates to a transparent, biaxially oriented polyester film which comprises at least 80% by weight of thermoplastic polyester and also comprises an amount in the range from 0.05 to 0.5% by weight of a specific pigment system. The invention further relates to a process for producing the film. The film can be used as a packaging film, or for metalizing or ceramic coating, and in applications in the industrial sector, as a substrate for stamping foils.Type: GrantFiled: December 18, 2003Date of Patent: September 26, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Martin Mueller-Roosen, Gottfried Hilkert
-
Patent number: 7112365Abstract: The invention relates to a multilayer, oriented film, in which at least one layer comprises a 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 the production of 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: GrantFiled: September 15, 2004Date of Patent: September 26, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Holger Kliesch, Thorsten Kiehne, Gottfried Hilkert, Franz Hora
-
Patent number: 7105223Abstract: The invention relates to a single-layer, oriented polyester film where the polyester comprises an additive which on irradiation with electromagnetic radiation forms metal nuclei on which further metal can be accumulated during 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: GrantFiled: September 15, 2004Date of Patent: September 12, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Holger Kliesch, Thorsten Kiehne, Gottfried Hilkert, Bodo Kuhmann
-
Heat-stabilised poly(ethylene naphthalate) film for flexible electronic and opto-electronics devices
Patent number: 7101627Abstract: The use of a heat-stabilized, heat-set oriented film comprising poly(ethylene naphthalate) as a substrate in, or in the manufacture of, an electronic or opto-electronic device containing a conjugated conductive polymer, wherein said film has a shrinkage at 30 mins at 230° C. of less than 1%; and a composite film comprising such a substrate layer and on a surface thereof a barrier layer.Type: GrantFiled: September 10, 2002Date of Patent: September 5, 2006Assignee: DuPont Teijin Films U.S. Limited PartnershipInventors: William Alasdair MacDonald, Leigh Beckett Richardson -
Patent number: 7101605Abstract: White, biaxially oriented polyester films which have a base layer B which comprises a thermoplastic polyester such as polyethylene terephthalate, and which comprise substantially only TiO2 as a white pigment, whose R value is less than 43 daN/mm2, whose emax ratio is less than 2.5 and at least one of whose two surfaces of the film has been provided with an acrylate-containing coating, are particularly tear-resistant and do not tend to delamination and are therefore suitable in particular as lid films for food containers, for example yoghurt cups. A process is described for producing the films.Type: GrantFiled: October 10, 2003Date of Patent: September 5, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Thorsten Kiehne, Herbert Peiffer, Bodo Kuhmann
-
Patent number: 7094465Abstract: The invention relates to a multilayer, transparent, biaxially oriented polyester film having at least one base layer B composed of a thermoplastic polyester, at least one overlayer A coextruded on the base layer B and at least one acrylic coating D which is applied to the film as an aqueous dispersion. The invention further relates to a process for producing the film and to its use.Type: GrantFiled: January 15, 2004Date of Patent: August 22, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Gottfried Hilkert
-
Patent number: 7094856Abstract: Process for the production of an oriented polyolefin film using multi-component polymer compositions. One polymer component comprises an isotactic propylene homopolymer produced by the polymerization of propylene with a Ziegler-Natta catalyst. A secondary component is a Ziegler-Natta polymerized ethylene-propylene random copolymer or a metallocene-polymerized ethylene-propylene random copolymer produced by the polymerization of propylene and ethylene in the presence of a metallocene polymerization catalyst. The Ziegler-Natta polymerized copolymer is produced by the polymerization of ethylene and propylene in the presence of a Ziegler-Natta catalyst and contains no more than 0.5 wt. % ethylene and has a xylene solubles content of at least 2 wt. %. The primary and secondary polymer components are mixed together to provide a blend in which, when the secondary component is a Ziegler-Natta polypropylene, is present in an amount within the range of 5–25 wt.Type: GrantFiled: July 25, 2005Date of Patent: August 22, 2006Assignee: Fina Technology, Inc.Inventors: Michael A. McLeod, David Smith
-
Patent number: 7083848Abstract: The invention relates to a single- or multilayer, oriented film in which at least one layer is comprised of a thermoplastic polymer having a minimum amount of amide groups. The polymer is a polyester, a polyamide, or a mixture comprised of polyester and polyamide, or is a copolymer comprised of these two materials. The film also comprises a component a) which, when irradiated with electromagnetic or particulate radiation, forms metal nuclei onto which further metal can be accumulated in further steps of the process. The invention also relates to a process for the production of this film, and to its use in printed circuit boards, ribbon cables, smart cards, RFID labels, membrane keyboards, or film-based circuits of any type.Type: GrantFiled: January 18, 2005Date of Patent: August 1, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Holger Kliesch, Thorsten Kiehne, Gottfried Hilkert, Ingo Fischer
-
Patent number: 7081224Abstract: A solution casting system has a tentering device, and produces polymer film of cellulose triacetate. Two web edge portions of the polymer film are sucked within a section from a downstream end of the tentering device to a first roller that the polymer film contacts first. Furthermore, the two web edge portions are subjected to blowing of gas, or suction, between the first roller and a second roller positioned next downstream from the first roller. Each range of two web edge portions has an effective size in a web width direction less than 25% of that of the polymer film.Type: GrantFiled: September 21, 2004Date of Patent: July 25, 2006Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroshi Nakashima
-
Patent number: 7063764Abstract: The invention relates to a method and a plant for producing polyolefinic transpiring films by means of bubble extrusion of a LLDPE and filler mix, flattening of the extruded tube to obtain a double layer flat film and transversely and/or longitudinally stretching of the double layer flat film.Type: GrantFiled: October 31, 2000Date of Patent: June 20, 2006Assignee: Nuova Pansac S.p.A.Inventors: Fabrizio Lori, Graziano Bortoletto
-
Patent number: 7060210Abstract: This invention involves forward integration of the art paste extrusion process by adding a step to the processing sequence to change the uniaxially-oriented art form to a desirable planar biaxially-oriented form. This invention also involves the backward integration of the resin preparation to reduce the commercial coagulated dispersion resin particle size (average 500 micron) to the size range of colloidal size particles contained within the original 500 micron particle. In this small particulate form, the polytetrafluoroethylene (PTFE) resin can be blended more homogeneously and extruded with less turbulence in the plug extrusion process, the rheological mechanism of this extrusion process. The size reduction makes processing of micron size fillers possible in up to 90 percent volume of the PTFE resin. This invention also provides a direct and simple method of producing planar biaxially-oriented sheet and a source of resin formulations for fabricating other forms and shapes.Type: GrantFiled: March 26, 2004Date of Patent: June 13, 2006Inventor: Robert Roberts
-
Patent number: 7056573Abstract: The invention relates to a co-extruded, biaxially oriented polyester film consisting of a base layer and at least one outer layer. The film contains a UV-stabilizer and has a matt outer layer which contains a mixture and/or a blend of two components (I) and (II), whereby component (I) is substantially a polyethylene terephthalate homopolymer or a polyethylene terephthalate copolymer, or a mixture of polyethylene terephthalate homopolymers or polyethyleneterephthalate copolymers, and component (II) is a polymer which contains at least one sulphonate group.Type: GrantFiled: January 10, 2001Date of Patent: June 6, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Ursula Murschall, Ulrich Kern, Guenther Crass, Gottfried Hilkert
-
Patent number: 7041243Abstract: The invention discloses a 5-layer co-extruded biaxial-oriented polypropylene synthetic paper which is a 5-layer laminated structure with thickness between 30–300 ?m comprising the uppermost layer (A) of paper sheet or resin, the second layer (B) of paper sheet or resin, the intermediate foamed layer (C), the forth layer (D) of paper sheet or resin and the bottom layer (E) of paper sheet or resin which is to improve the rigidity and stiffness covering power, strength between layers, glossiness of paper surface, paper thickness and the printability of the conventional synthetic paper.Type: GrantFiled: November 28, 2003Date of Patent: May 9, 2006Assignee: Nan Ya Plastics Corp.Inventor: Allen Fong-Chin Lin
-
Patent number: 7037461Abstract: A method of stretching films in which all or a portion of the width of the film is cooled during or just after stretching so as to improve the uniformity of the film. The includes stretching a polymeric film in a tenter that grasps the film with a plurality of clips along the opposing edges of the film and propels the clips to thereby stretch the film. The tenter includes driven clips and idler clips, with at least one idler clip between respective pairs of driven clips. The cooling is done so as to improve the uniformity of the clip spacing relative to the spacing obtained at otherwise identical process conditions without such cooling.Type: GrantFiled: December 21, 1999Date of Patent: May 2, 2006Assignee: 3M Innovative Properties CompanyInventors: Martin E. Denker, Joseph T. Bartusiak, Anthony B. Ferguson, Thomas P. Hanschen, Jeffery N. Jackson, William Ward Merrill, Susan J. Newhouse, Fred J. Roska, Richard J. Thompson, Chiu Ping Wong
-
Patent number: 7022407Abstract: A film which is a biaxially oriented film comprising polyethylene-2,6-naphthalenedicaboxylate as a principal component, having a thermal strain ratio RMD (150) in the machine direction of the film at a temperature of 150° C. is ?1.5%?RMD (150)?0.0% when the thermal strain ratio RMD (T) in the machine direction of the film at a temperature T° C. based on the length LMD (t) in the machine direction (MD) of the film at a temperature t° C. is defined by RMD(T)={[LMD(T)?LMD(35)]/LMD(35)}×100(%), excellent in insulation characteristics without lowering processing characteristics, especially the characteristics during hot-pressing and suitable as a dielectric for capacitors.Type: GrantFiled: November 28, 2001Date of Patent: April 4, 2006Assignee: Teijin LimitedInventors: Koji Furuya, Hiroshi Kusume, Makoto Handa
-
Patent number: 7008698Abstract: A shrinkable polymer film including a modified polyester resin polymerized from monomers including a dicarboxylic acid and a glycol, wherein the glycol includes 2-methyl-1,3-propanediol, and wherein the polymer film shrinks at least about 50% in a main shrinkage direction after ten seconds in an 80 degree Celsius hot water bath.Type: GrantFiled: June 14, 2004Date of Patent: March 7, 2006Assignee: Mitsubishi Polyester Film, LLCInventors: Chadwick E. Marlow, Charles D. Carlson, Jr., Robert G. Posey, Gary R. Garner, Russell S. Foxhall
-
Patent number: 7005169Abstract: Biaxially oriented polyester films which have a polyester-containing base layer (B) which additionally comprises poly(m-xyleneadipamide) and has been provided on at least one side with an overlayer (A) which has been coated with a barrier layer (D), said barrier layer comprising polyvinyl alcohol and a copolymer of maleic acid and acrylic acid, feature improved optical properties such as high gloss and low opacity and very good barrier properties, in particular toward the passage of oxygen, and, as a consequence of their insensitivity toward moisture, are suitable as a packaging material for foods or other consumable items.Type: GrantFiled: January 20, 2004Date of Patent: February 28, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Oliver Klein, Herbert Peiffer, Gottfried Hilkert
-
Patent number: 7001557Abstract: An object of the present invention is to provide a biaxially oriented high quality polyester film excellent in thermal dimensional stability and clarity and also excellent in productivity, and also to provide a production process thereof. Another object is to provide a biaxially oriented polyester film greatly improved in the practical properties respected in various applications of the polyester film, such as the recording track shift in magnetic recording tape application, curling in magnetic recording card application, dimensional change during process in printing plate application, printing shift in ribbon application, thermostability in capacitor application, and perforation sensitivity and low temperature curling in heat-sensitive mimeograph stencil application.Type: GrantFiled: April 10, 2002Date of Patent: February 21, 2006Assignee: Toray Industries, Inc.Inventors: Tetsuya Tsunekawa, Hirofumi Hosokawa, Takuji Higashioji
-
Patent number: 6991837Abstract: Biaxially oriented polyester films which have a polyester-containing base layer (B) which additionally comprises poly(m-xyleneadipamide) and which is coated on at least one side with a barrier layer (D), the barrier layer comprising polyvinyl alcohol and a copolymer of maleic acid and acrylic acid, feature improved optical properties such as high gloss and low opacity, and very good barrier properties, in particular with respect to oxygen passage, and are also suitable as packaging materials for foods or other consumable items as a consequence of their insensitivity toward moisture.Type: GrantFiled: January 20, 2004Date of Patent: January 31, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Oliver Klein, Herbert Peiffer, Gottfried Hilkert
-
Patent number: 6991758Abstract: A method and a device for production of a web with good breathing properties, for example having a nonwoven web based on plastic filaments and/or plastic fibers and a plastic film, applied on one side of the nonwoven web and containing at least one mineral filler. For the production of the good breathing properties, the web is stretched in the longitudinal direction of the same, in two successive steps, and an embossing is carried out, at least in certain sectors of the surface, between the two steps which effect the stretching in the longitudinal direction.Type: GrantFiled: September 5, 2002Date of Patent: January 31, 2006Assignee: Reifenhauser GmbH & Co. MaschinenfabrikInventors: Klemens Krumm, Klaus Reifenhauser
-
Patent number: 6984437Abstract: 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, 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: GrantFiled: October 10, 2003Date of Patent: January 10, 2006Assignee: Mitsubishi Polyester Film GmbHInventors: Bart Janssens, Herbert Peiffer, Gottfried Hilkert
-
Patent number: 6974621Abstract: 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 A 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 or D 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: GrantFiled: October 10, 2003Date of Patent: December 13, 2005Assignee: Mitsubishi Polyester Film GmbHInventors: Bart Janssens, Herbert Peiffer, Gottfried Hilkert
-
Patent number: 6962740Abstract: 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: GrantFiled: October 10, 2003Date of Patent: November 8, 2005Assignee: Mitsubishi Polyester Film GmbHInventors: Bart Janssens, Herbert Peiffer, Stefan Bartsch
-
Patent number: 6951591Abstract: Laminates of thermoplastic films and nonwoven fibrous webs are made at high speeds on the order of about 700 fpm to about 1200 fpm. Bond strengths of film and nonwoven laminates are effectively controlled to make breathable laminates at high speeds. Air cooling devices cause the air to flow substantially parallel to the extruded plastic web during drawdown and provide a plurality of cooling air vortices to effectively cool the web. Film gauge control is also achieved by the method.Type: GrantFiled: September 30, 2002Date of Patent: October 4, 2005Assignee: Clopay Plastic Products Company, Inc.Inventors: Robert M. Mortellite, Thomas G. Mushaben, Pai-Chuan Wu
-
Patent number: 6949212Abstract: Stretched polymeric films can be used in a variety of applications, including optical applications. The stretching conditions and shape of the stretching tracks in a stretching apparatus can determine or influence film properties. Methods and stretching apparatuses can include adjustable or zone-defined stretching regions.Type: GrantFiled: November 27, 2002Date of Patent: September 27, 2005Assignee: 3M Innovative Properties CompanyInventors: William W. Merrill, Jeffery N. Jackson, Andrew T. Ruff, Desiree L. Thompson, John A. Wheatley, Jeffrey D. Amundson, Curtis A. Harvey
-
Patent number: 6949296Abstract: The substrates of the present invention comprise a polyimide base polymer derived at least in part from non-rigid rod monomers together with optionally rigid rod monomers where the substrates are cured under low tension. The resulting polyimide materials have been found to provide advantageous properties (e.g. balanced molecular orientation, good dimensional stability, and flatness) particularly useful for electronics type applications.Type: GrantFiled: April 4, 2003Date of Patent: September 27, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Meredith L. Dunbar, James R. Edman
-
Patent number: 6946192Abstract: The application discloses a transparent, biaxially oriented polyester film having a base layer at least 80% by weight of which is composed of a thermoplastic polyester, and having at least one outer layer, wherein the outer layer is composed of a polymer, or of a mixture of polymers, which comprises at least 40% by weight of ethylene 2,6-naphthalate units and up to 40% by weight of ethylene terephthalate units and/or units from cycloaliphatic or aromatic diols and/or dicarboxylic acids, with the proviso that the Tg2 value of the polyester film is above the Tg2 value of the base layer but below the Tg2 value of the outer layer, and at least one film surface has a surface tension of from 35 to 65 mN/m and/or has been provided with a functional coating of thickness from 5 to 100 nm. The film has low atmospheric oxygen transmission. It is particularly suitable for packaging uses, specifically for packaging foods and other consumable items, and for laminating, metallizing and printing.Type: GrantFiled: August 12, 2003Date of Patent: September 20, 2005Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Cynthia Bennett, Guenther Crass, Gottfried Hilkert, Werner Roth
-
Patent number: 6939499Abstract: A process for stretching films is described. The process preferably stretches films in a uniaxial fashion. Preferably, optical films are stretched including multilayer optical films. Other aspects of the invention include a roll of stretched film and an apparatus for stretching films.Type: GrantFiled: May 28, 2002Date of Patent: September 6, 2005Assignee: 3M Innovative Properties CompanyInventors: William Ward Merrill, Jeffery N. Jackson, Andrew T. Ruff, John A. Wheatley, Dennis L. Krueger
-
Patent number: 6936209Abstract: Stretched polymeric films can be used in a variety of applications, including optical applications. The stretching conditions and shape of the stretching tracks in a stretching apparatus can determine or influence film properties. Take-away systems can be used to receive the film after stretching. The configuration of the take-away system can, in at least some instances, influence final film properties.Type: GrantFiled: November 27, 2002Date of Patent: August 30, 2005Assignee: 3M Innovative Properties CompanyInventors: Jeffery N. Jackson, William Ward Merrill, Andrew T. Ruff, Desiree L. Thompson
-
Patent number: 6916440Abstract: A process for stretching films is described. The process preferably stretches films in a uniaxial fashion. Preferably, optical films are stretched including multilayer optical films. Other aspects of the invention include a roll of stretched film and an apparatus for stretching films.Type: GrantFiled: May 28, 2002Date of Patent: July 12, 2005Assignee: 3M Innovative Properties CompanyInventors: Jeffery N. Jackson, William Ward Merrill, Andrew T. Ruff, Desiree L. Thompson, Dennis L. Krueger
-
Patent number: 6916548Abstract: The invention relates to biaxially orientated, co-extruded polyester films, which have at least one base layer that contains a thermoplastic polyester, preferably polyethylene terephthalate and approx. 2 to 60 wt.-% of a cycloolefin copolymer that is preferably composed of norbornene and ethylene units and which have at least one cover layer that is devoid of a COC and which optionally have additional cover or intermediate layers and can contain conventional additives such as stabilisers and anti-blocking agents. Said films are characterized in particular by a degree of whiteness>70%, an opacity>55% and a gloss, (at least on one side)>100 and are therefore suitable for numerous industrial applications. During the production of the films in accordance with the co-extrusion process, up to 70 wt.-% of reclaimed product can be used, without having a noticeable negative effect on the physical properties of the film.Type: GrantFiled: May 17, 2001Date of Patent: July 12, 2005Assignee: Mitsubishi Polyester Film GmbHInventors: Ursula Murschall, Cynthia Bennett, Ulrich Kern, Herbert Peiffer
-
Patent number: 6913817Abstract: Biaxially oriented polyester films which have a polyester-containing base layer (B) and a matt overlayer (A), and are characterized by the following features: a) the transverse shrinkage of the film is between 1 and 2.3%, b) the transverse linear expansion of the film during thermo-mechanical analysis is smaller than or equal to 0.2%, c) the matt overlayer comprises particles, preferably SiO2, whose median diameter is from 2 to 10 ?m and whose SPAN98 is smaller than or equal to 2, and d) the matt overlayer (A) comprises a polyester which has from 4 to 30 mol % of isophthalic acid units are notable in particular for low opacity, high transparency and low gloss of the overlayer (A), and are therefore suitable as flexible packaging films and for the purposes of hot lamination.Type: GrantFiled: January 26, 2004Date of Patent: July 5, 2005Assignee: Mitsubishi Polyester Film GmbHInventors: Oliver Klein, Herbert Peiffer, Matthias Konrad
-
Patent number: 6893731Abstract: This invention provides a water-based composition suitable for use on polyester-based substrates for increasing adhesion between the substrate and a topcoat or overcoat. The composition comprises: (1) a latex polymer formed from the polymerization of at least one monomer selected from the group consisting of bicyclic alkyl (meth)acrylates and aromatic (meth)acrylates and at least one monomer which imparts to the polymer the ability to be crosslinked; (2) a water soluble or water dispersible polymer selected from the group consisting of acrylate-based resins, sulfonated polyester-based resins and combinations thereof; and (3) a crosslinking agent.Type: GrantFiled: September 25, 2001Date of Patent: May 17, 2005Assignee: 3M Innovative Properties CompanyInventor: William L. Kausch
-
Patent number: 6893706Abstract: The invention relates to a white, biaxially-oriented and coextruded polyester film which is matt on at least one side with at least one base layer B, which contains a cycloolefin copolymer (COC) in amounts of 4 to 60 wt. %, based on the weight of the base layer, in addition to polyester starting material. The glass transition temperature Tg of the COC lies in the range from 70 to 270° C. Said film has at least one matt outer layer (A), made from polyester and is particularly suitable for use in fast running machines such as winding, metallising, printing or laminating machines.Type: GrantFiled: May 3, 2001Date of Patent: May 17, 2005Assignee: Mitsubishi Polyester Film GmbHInventors: Herbert Peiffer, Holger Kliesch, Gottfried Hilkert, Bart Janssens
-
Patent number: 6890471Abstract: A biaxially oriented polyester film for a high-density magnetic recording medium, particularly a high-density magnetic recoding medium of linear recording system, which has high strength in longitudinal and transverse directions, excellent dimensional stability in a crosswise direction and is flat and excellent in output characteristics and a process for producing the same. The biaxially oriented film is made from polyethylene-2,6-naphthalate and has a Young's modulus in a longitudinal direction of 8 GPa or more, a Young's modulus in a transverse direction of 6 GPa or more, a temperature expansion coefficient in the transverse direction (?t) of ?5×10?6/° C. to +12×10?6/° C., a humidity expansion coefficient in the transverse direction (?h) of 5×10?6/% RH to 12×10?6/% RH and a thermal shrinkage factor in the transverse direction at 105° C. of ?0.5 to +1.Type: GrantFiled: December 7, 2001Date of Patent: May 10, 2005Assignee: Teijin LimitedInventors: Ieyasu Kobayashi, Shinji Muro, Hirofumi Murooka