WO1994004961A1 - Support de film en polyester opaque pour materiau photographique - Google Patents

Support de film en polyester opaque pour materiau photographique Download PDF

Info

Publication number
WO1994004961A1
WO1994004961A1 PCT/EP1993/002073 EP9302073W WO9404961A1 WO 1994004961 A1 WO1994004961 A1 WO 1994004961A1 EP 9302073 W EP9302073 W EP 9302073W WO 9404961 A1 WO9404961 A1 WO 9404961A1
Authority
WO
WIPO (PCT)
Prior art keywords
voided
layer
polyolefin
polyester
film
Prior art date
Application number
PCT/EP1993/002073
Other languages
English (en)
Inventor
Marc Petrus Stevens
Patrick Plessers
Gery Vancoppenolle
Original Assignee
Agfa-Gevaert Naamloze Vennootschap
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agfa-Gevaert Naamloze Vennootschap filed Critical Agfa-Gevaert Naamloze Vennootschap
Publication of WO1994004961A1 publication Critical patent/WO1994004961A1/fr

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/795—Photosensitive materials characterised by the base or auxiliary layers the base being of macromolecular substances
    • G03C1/7954—Polyesters
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/91—Photosensitive materials characterised by the base or auxiliary layers characterised by subbing layers or subbing means
    • G03C1/93—Macromolecular substances therefor

Definitions

  • primer layers such as vinylidene chloride copolymers or polyester-polybutadiene copolymers
  • aqueous emulsions of dispersions do not spread evenly on the surface of the voided film.
  • a first subbing layer directly onto a surface of the voided polyester film it is necessary to coat from a solvent based solution of the copolymer or to treat the voided polyester with an oxidation plasma or corona.
  • the above object is realized by providing a method of manufacture of a photographic material comprising a polyolefin voided biaxially orientated polyester film as support and at least one light—sensitive silver emulsion layer, characterised by the steps of :
  • sandwich structures comprising a layer of the opaque voided polyester film laminated with one or more layers of non-polyolefin voided films.
  • said non-polyolefin voided film is an opaque film.
  • the condensation product can be mixed with the polyolefin by several routes, a) the granulated polyester is dry blended with powdered or granulated polyolefin, and the mixed blend fed into the extruder, or b) the melt of the condensation product is fed into a melt extruder and the polyolefin is separately melted in an extruder and the polyolefin melt is then fed into the melt extruder to mix with the polyester melt.
  • This route offers best results for uniform distribution of the polyolefin in the polyester.
  • the polyolefin may be a homopolymer or a copolymer of ethylene (high or low density) or of propylene. A mixture of homopolymers and copolymers may also be used. Preferably a homopolymer of propylene is used; an amount of 3-30 % by weight of total blend is mixed into the polyester, and more preferably about 10-20 % by, weight of polypropylene. Amounts of polyolefin above 30 % lead to easy film rupture during production, and below 3 % there is little or no opacifying effect.
  • the polyolefin and polyester are mixed in the high shear extruder at about the melting point of the polyester and since the polyolefin and polyester are incompatible the polyolefin exists as discrete globules within the polyester continuous phase.
  • the film opacity is produced when the film is stretched causing voids around the globules at the polyolefin/polyester interface.
  • the polyolefin, preferably polypropylene, globules should be small to provide opacity and crease resistance and should generally have an average diameter in the range of between 5-10 microns.
  • a second extruder melts the non-polyolefin containing, pigmented polyester and a third extruder melts the non polyolefin polyester.
  • the mixed polyester/polyolefin melt and the non-polyolefin containing, pigmented polyester (second extruder) or the mixed polyester/polyolefin melt and the non-polyolefin containing, pigmented polyester melt (second extruder) and the non-polyolefin polyester melt (third extruder) are coextruded through a feedblock and a one-slit die or through a multilayer die into a multilayer film.
  • the resulting film sandwich may comprise the polyester/polyolefin containing layer as a core, surrounde by :
  • the multilayer film is rapidly quenched upon a casting drum as quickly as possible to produce a film in an amorphous state.
  • the outer layer could be voided by barium sulphate.
  • the outer polyester layers may be, but not necessarily, formed from the same polyester as the base material of the core layer.
  • the non-polyolefin voided polyester may be more amorphous than the polyester of the core layer to improve the crease resistance.
  • the outer layers may have the same or different compositions.
  • the combined film layers are then biaxially oriented by stretching in one direction and then in a second direction.
  • the extruded combined film layers will have a thickness of approximately 500 to 2000 ⁇ and are first stretched longitudinally in the direction of extrusion.
  • the longitudinal stretching ratio should be sufficient to create voids. Stretching is preferably done at a temperature above but close to the glass transition temperature of the polyester in order to improve opacity. The preferred stretch ratio is about between 3 and 4.
  • the longitudinal stretching operations known in the art to produce biaxially oriented polyester film may be used. For instance, combined film layers are passed between a pair of infra red heaters which heats the layers to a temperature above the glass transition temperature of the polyester (about 80°C for polyethylene terephthalate) in the region where the stretching occurs.
  • the film sandwich is cooled to allow for further treatment between longitudinal and transverse stretching e.g. allowing for the coating by a primer layer.
  • the combined layers are then passed through hot air heaters and the film heated above the glass transition temperature for transverse stretching by means of a tenter apparatus.
  • the stretch ratio in the transverse direction is preferably between 3 and 4.
  • the transverse stretching of the film causes the voids to extend transversely of each polyolefin globule.
  • the biaxially stretched combined film layers are passed through a second set of hot air heaters which blow hot air at a temperature of between 160 and 240 degrees Centrigrade onto the film layers to heat set the film layers.
  • the heat set temperature must be sufficient to obtain crystallization of the polyester but care must be taken not to overheat the layers since the voids can collapse.
  • increasing the heat set temperature improves the crease resistance of the film. A compromise of the properties depending upon heat set temperatures must be chosen.
  • a first aqueous subbing layer may be applied to the support after the biaxial stretching. It is also possible, according to this invention to apply the aqueous primer layer before or after longitudinal stretching. Preferably the first aqueous primer layer is applied to the support between the two stretching operations.
  • the aqueous primer layer may be applied to the polyester layer by a coating means such as an air knife coating system.
  • the first subbing layer (primer layer) is for example formed from a chloride containing copolymer such as vinylidene chloride copolymer in latex form having some hydrophilic functionality through the presence of a copoiymerized unsaturated carboxylic acid which is applied as an aqueous dispersion.
  • Any other primer or subbing layer(s) can be applied from aqueous latex dispersions that are known in the art for improving the adhesion of hydrophilic colloid coatings e.g. gelatin layers to polyester supports.
  • Additives may be added to the sandwich of a polyolefin voided polyester film between non-polyolefin voided polyester layers. Most specifically additives which are only or most functional at the surface of the film support may be added to the outer layers. This procedure allows for a reduction in the total addition of additive with the same or better functional result than adding the additive to the core layer.
  • Si ⁇ 2 can be added to give the material a good writing surface.
  • Anti-static agents can be added in the outer layers to improve the electrical properties.
  • the appearance and brightness can be improved by adding fluorescent brighteners, pigments and/or coloured compounds in the outer layer.
  • the final multilayer material may have a voided layer having a thickness Tl of 75-300 ⁇ m and a non-voided layers of a thickness T2 of between 1 and 50 and preferably between 5 and 20 ⁇ .
  • a photographic silver halide emulsion material comprising a support according to the present invention as defined hereinbefore may contain (a) silver halide emulsion layer(s) of any type known to those skilled in the art.
  • these materials may contain a silver halide emulsion layer of the type used in continuous tone or halftone photography, microphotography, radiography and films for graphic arts application.
  • the defined support can be used most advantageously in black-and-white or colour photographic print materials.
  • composition of silver halide emulsion layers reference is made e.g. to Research Disclosure 17,643 of December 1978 and Research Disclosure 307,105 of November 1989.
  • a photographic silver halide emulsion material comprising a support according to the present invention as defined hereinbefore may comprise, apart from (a) silver halide emulsion layer(s), antistatic layers as described in e.g. EP-A 440957, European non published application 92203149.7, European non published application 92200230.8, US-P 4,495,276, and EP-A 191302 ; also antihalation layers, backing layers, intermediate layers and protective layers may be present.
  • Table 1 gives all examples 1 to 11 the values of parameters 1 to 4 and table 2 gives the values of parameters 5 to 7 and test data 1 to 3 for the film supports described herein coated with photosensitive and auxiliary layers as used for photographic print paper.
  • the sandwich contructions comprising a core layer of 85% by weight polyethylene terephthalate voided by 15% by weight polypropylene having a melt flow index of 3 (ASTM D1238) , with outer layers of polyethylene terephthalate having Ti ⁇ 2 (anatase form) filler of various concentrations as shown.
  • the Ti ⁇ 2 has a particle size of 0.2-0.3 ⁇ m.
  • polyester layers were extruded at 270-280 degrees centigrade at differing melt flows depending upon the thicknesses of the final layers and with an initial total extrudate thickness of 1100 ⁇ m.
  • the extrudate was drawn down with longitudinal stretching ratio of 3.3 and longitudinal stresses as shown in the tables and transverse stretching ratio of 3.0 at a temperature of 100 degrees centigrade and at stretching speed of 1000% per minute to give final total film thicknesses as shown in table 2. Only examples 9-11 were heat set. Between longitudinal and transverse stretching an aqueous primer layer was applied pro rata of 130 sq. . per litre from the following composition :
  • This aqueous coating composition spreads well on the non-voided polyester layer whereas it could not be applied to a voided polyester film only. It adhered well before as well as after stretching.
  • the opacity is measured as described by test T425m-60 published by TAPPI, 360 Lexington Ave, New York, USA.
  • K0 bad.
  • Conventional polyethylene-coated paper for photoprints (Agfa CN- 310 paper) has an evaluation of K3.
  • Test procedure bending the film support (without emulsion layers) over rolls of 3-4-6-8-10-12-14-16-18 and 20 mm diameter. The smallest roll whereby no creasing is noticed is given.
  • Ti02in an amount of 15 to 20 % w/w gives a large improvement of picture sharpness, the sharpness gets even better than that of photographic materials coated on conventional polyethylene-coated paper. Heatsetting increased the crease resistance but lowers the opacity.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un procédé de fabrication de matériau photographique comprenant un film en polyester à vides polyoléfiniques utilisé comme support, et au moins une couche d'émulsion d'argent photosensible. Ledit procédé se décompose en plusieurs étapes: (i) prévoir, sur au moins une face d'un film en polyester à vides polyoléfiniques, une couche à vides polyoléfiniques, une couche de film en polyester exempte de vides polyoléfiniques (désignée ici par couche sans vides polyoléfiniques), (ii) appliquer un mordant aqueux ou un substrat sur la face du film en polyester à vides polyoléfiniques recouverte de ladite couche sans vides polyoléfiniques, (iii) appliquer une ou plusieurs couches hydrophiles sur ledit mordant ou substrat.
PCT/EP1993/002073 1992-08-11 1993-08-04 Support de film en polyester opaque pour materiau photographique WO1994004961A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP92202461 1992-08-11
EP92202461.7 1992-08-11

Publications (1)

Publication Number Publication Date
WO1994004961A1 true WO1994004961A1 (fr) 1994-03-03

Family

ID=8210839

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/002073 WO1994004961A1 (fr) 1992-08-11 1993-08-04 Support de film en polyester opaque pour materiau photographique

Country Status (1)

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WO (1) WO1994004961A1 (fr)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998007068A1 (fr) * 1996-08-14 1998-02-19 Imperial Chemical Industries Plc Film de polyester
US5853965A (en) * 1997-05-23 1998-12-29 Eastman Kodak Company Photographic element with bonding layer on oriented sheet
US5866282A (en) * 1997-05-23 1999-02-02 Eastman Kodak Company Composite photographic material with laminated biaxially oriented polyolefin sheets
US5874205A (en) * 1997-05-23 1999-02-23 Eastman Kodak Company Photographic element with indicia on oriented polymer back sheet
US5888681A (en) * 1997-05-23 1999-03-30 Eastman Kodak Company Photographic element with microvoided sheet of opalescent appearance
US5888683A (en) * 1997-05-23 1999-03-30 Eastman Kodak Company Roughness elimination by control of strength of polymer sheet in relation to base paper
US5888643A (en) * 1997-05-23 1999-03-30 Eastman Kodak Company Controlling bending stiffness in photographic paper
US5902720A (en) * 1997-05-23 1999-05-11 Eastman Kodak Company Photographic element that resists curl using oriented sheets
US5935690A (en) * 1997-05-23 1999-08-10 Eastman Kodak Company Sheets having a microvoided layer of strength sufficient to prevent bend cracking in an imaging member
US6017685A (en) * 1998-09-17 2000-01-25 Eastman Kodak Company Transmission duplitized display materials with biaxially oriented polyolefin sheets
US6020116A (en) * 1998-09-17 2000-02-01 Eastman Kodak Company Reflective display material with biaxially oriented polyolefin sheet
US6030756A (en) * 1998-09-17 2000-02-29 Eastman Kodak Company Day/night photographic display material with biaxially oriented polyolefin sheet
US6063552A (en) * 1998-09-17 2000-05-16 Eastman Kodak Company Photographic clear display materials with biaxially oriented polyolefin sheet
US6071654A (en) * 1998-09-17 2000-06-06 Eastman Kodak Company Nontransparent transmission display material with maintained hue angle
US6080532A (en) * 1998-09-17 2000-06-27 Eastman Kodak Company Clear duplitized display materials
EP1014180A1 (fr) * 1998-12-21 2000-06-28 Eastman Kodak Company Matériaux photographiques de visualisation d'images translucides comprenant une couche de polyester alvéolé
US6162549A (en) * 1998-09-17 2000-12-19 Eastman Kodak Company Day/night imaging display material with biaxially oriented polyolefin sheet
US6180304B1 (en) 1998-09-17 2001-01-30 Eastman Kodak Company Translucent imaging paper display materials with biaxially oriented polyolefin sheet
US6197416B1 (en) 1998-09-17 2001-03-06 Eastman Kodak Company Transmission imaging display material with biaxially oriented polyolefin sheet
US6200740B1 (en) 1998-09-17 2001-03-13 Eastman Kodak Company Photographic transmission display materials with biaxially oriented polyolefin sheet
EP1115027A1 (fr) * 1999-12-22 2001-07-11 Eastman Kodak Company Matériau pour l'enregistrement d'images nacré
US6261994B1 (en) 1998-09-17 2001-07-17 Eastman Kodak Company Reflective imaging display material with biaxially oriented polyolefin sheet
US6352822B1 (en) 2000-12-06 2002-03-05 Eastman Kodak Company Polyolefin base display material with tone enhancing layer
US6355404B1 (en) 2000-12-06 2002-03-12 Eastman Kodak Company Polyester base display material with tone enhancing layer
US6403292B1 (en) 2000-12-06 2002-06-11 Eastman Kodak Company Duplitized display material with translucent support with specified face to back speed differential
US6641973B1 (en) 2002-10-07 2003-11-04 Eastman Kodak Company Photographic day/night displays utilizing inorganic particles
US7264855B2 (en) 2002-09-26 2007-09-04 Eastman Kodak Company Imaging member with vacuous core base
WO2008008148A2 (fr) * 2006-07-07 2008-01-17 Exxonmobil Oil Corporation film composite
US8034541B2 (en) 2006-10-03 2011-10-11 Agfa-Gevaert N.V. Process for producing a non-transparent microvoided self-supporting film
US8088474B2 (en) 2007-03-27 2012-01-03 Agfa-Gevaert N.V. Non-transparent microvoided biaxially stretched film, its use in synthetic paper and an image recording element comprising same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB718422A (en) * 1950-03-22 1954-11-17 Du Pont Preparation of molecularly oriented coated films
US4187113A (en) * 1975-11-05 1980-02-05 Imperial Chemical Industries Limited Voided films of polyester with polyolefin particles
US4255516A (en) * 1979-04-23 1981-03-10 Fuji Photo Film Co., Ltd. Photographic support containing different polyester layers
EP0228041A2 (fr) * 1985-12-31 1987-07-08 General Electric Company Matériaux de noyau chargé avec couches externes non chargées liées à celui-ci
EP0360201A2 (fr) * 1988-09-19 1990-03-28 Diafoil Company, Limited Film de polyester stratifié
EP0376693A2 (fr) * 1988-12-28 1990-07-04 Kanebo Ltd. Feuille de polyester ayant une couche de substratage en copolyester

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB718422A (en) * 1950-03-22 1954-11-17 Du Pont Preparation of molecularly oriented coated films
US4187113A (en) * 1975-11-05 1980-02-05 Imperial Chemical Industries Limited Voided films of polyester with polyolefin particles
US4255516A (en) * 1979-04-23 1981-03-10 Fuji Photo Film Co., Ltd. Photographic support containing different polyester layers
EP0228041A2 (fr) * 1985-12-31 1987-07-08 General Electric Company Matériaux de noyau chargé avec couches externes non chargées liées à celui-ci
EP0360201A2 (fr) * 1988-09-19 1990-03-28 Diafoil Company, Limited Film de polyester stratifié
EP0376693A2 (fr) * 1988-12-28 1990-07-04 Kanebo Ltd. Feuille de polyester ayant une couche de substratage en copolyester

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2196849A1 (fr) * 1996-08-14 2010-06-16 DuPont Teijin Films U.S. Limited Partnership Procédé pour la fabrication d'un film en polyester par coextrusion
WO1998007068A1 (fr) * 1996-08-14 1998-02-19 Imperial Chemical Industries Plc Film de polyester
US5888643A (en) * 1997-05-23 1999-03-30 Eastman Kodak Company Controlling bending stiffness in photographic paper
US5874205A (en) * 1997-05-23 1999-02-23 Eastman Kodak Company Photographic element with indicia on oriented polymer back sheet
US5888681A (en) * 1997-05-23 1999-03-30 Eastman Kodak Company Photographic element with microvoided sheet of opalescent appearance
US5888683A (en) * 1997-05-23 1999-03-30 Eastman Kodak Company Roughness elimination by control of strength of polymer sheet in relation to base paper
US6040036A (en) * 1997-05-23 2000-03-21 Eastman Kodak Company Sheets having a microvoided layer of strength sufficient to prevent bend cracking in an imaging member
US5902720A (en) * 1997-05-23 1999-05-11 Eastman Kodak Company Photographic element that resists curl using oriented sheets
US5935690A (en) * 1997-05-23 1999-08-10 Eastman Kodak Company Sheets having a microvoided layer of strength sufficient to prevent bend cracking in an imaging member
US5968695A (en) * 1997-05-23 1999-10-19 Eastman Kodak Company Roughness elimination by control of strength of polymer sheet in relation to base paper
US6004732A (en) * 1997-05-23 1999-12-21 Eastman Kodak Company Controlling bending stiffness in photographic paper
US6007665A (en) * 1997-05-23 1999-12-28 Eastman Kodak Company Photographic element with indicia on oriented polymer back sheet
US5866282A (en) * 1997-05-23 1999-02-02 Eastman Kodak Company Composite photographic material with laminated biaxially oriented polyolefin sheets
US5853965A (en) * 1997-05-23 1998-12-29 Eastman Kodak Company Photographic element with bonding layer on oriented sheet
US6043009A (en) * 1997-05-23 2000-03-28 Eastman Kodak Company Composite photographic material with laminated biaxially oriented polyolefin sheets
US6080532A (en) * 1998-09-17 2000-06-27 Eastman Kodak Company Clear duplitized display materials
US6261994B1 (en) 1998-09-17 2001-07-17 Eastman Kodak Company Reflective imaging display material with biaxially oriented polyolefin sheet
EP0989453A1 (fr) * 1998-09-17 2000-03-29 Eastman Kodak Company Matériau réfléchissant de visualisation d'image contenant une feuille de polyoléfine biaxialement orientée
US6063552A (en) * 1998-09-17 2000-05-16 Eastman Kodak Company Photographic clear display materials with biaxially oriented polyolefin sheet
US6071654A (en) * 1998-09-17 2000-06-06 Eastman Kodak Company Nontransparent transmission display material with maintained hue angle
US6020116A (en) * 1998-09-17 2000-02-01 Eastman Kodak Company Reflective display material with biaxially oriented polyolefin sheet
US6017685A (en) * 1998-09-17 2000-01-25 Eastman Kodak Company Transmission duplitized display materials with biaxially oriented polyolefin sheets
US6162549A (en) * 1998-09-17 2000-12-19 Eastman Kodak Company Day/night imaging display material with biaxially oriented polyolefin sheet
US6180304B1 (en) 1998-09-17 2001-01-30 Eastman Kodak Company Translucent imaging paper display materials with biaxially oriented polyolefin sheet
US6197416B1 (en) 1998-09-17 2001-03-06 Eastman Kodak Company Transmission imaging display material with biaxially oriented polyolefin sheet
US6200740B1 (en) 1998-09-17 2001-03-13 Eastman Kodak Company Photographic transmission display materials with biaxially oriented polyolefin sheet
US6242142B1 (en) 1998-09-17 2001-06-05 Eastman Kodak Company Nontransparent transmission display material with maintained hue angle
US6030756A (en) * 1998-09-17 2000-02-29 Eastman Kodak Company Day/night photographic display material with biaxially oriented polyolefin sheet
EP1014180A1 (fr) * 1998-12-21 2000-06-28 Eastman Kodak Company Matériaux photographiques de visualisation d'images translucides comprenant une couche de polyester alvéolé
EP1115027A1 (fr) * 1999-12-22 2001-07-11 Eastman Kodak Company Matériau pour l'enregistrement d'images nacré
US6274284B1 (en) 1999-12-22 2001-08-14 Eastman Kodak Company Nacreous imaging material
US6355404B1 (en) 2000-12-06 2002-03-12 Eastman Kodak Company Polyester base display material with tone enhancing layer
US6403292B1 (en) 2000-12-06 2002-06-11 Eastman Kodak Company Duplitized display material with translucent support with specified face to back speed differential
US6352822B1 (en) 2000-12-06 2002-03-05 Eastman Kodak Company Polyolefin base display material with tone enhancing layer
US7264855B2 (en) 2002-09-26 2007-09-04 Eastman Kodak Company Imaging member with vacuous core base
US6641973B1 (en) 2002-10-07 2003-11-04 Eastman Kodak Company Photographic day/night displays utilizing inorganic particles
WO2008008148A2 (fr) * 2006-07-07 2008-01-17 Exxonmobil Oil Corporation film composite
WO2008008148A3 (fr) * 2006-07-07 2008-11-27 Exxonmobil Oil Corp film composite
US8377845B2 (en) 2006-07-07 2013-02-19 Exxonmobil Oil Corporation Composite film
US8034541B2 (en) 2006-10-03 2011-10-11 Agfa-Gevaert N.V. Process for producing a non-transparent microvoided self-supporting film
US8088474B2 (en) 2007-03-27 2012-01-03 Agfa-Gevaert N.V. Non-transparent microvoided biaxially stretched film, its use in synthetic paper and an image recording element comprising same

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