WO2008156364A1 - Support multicouche - Google Patents

Support multicouche Download PDF

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Publication number
WO2008156364A1
WO2008156364A1 PCT/NL2008/050404 NL2008050404W WO2008156364A1 WO 2008156364 A1 WO2008156364 A1 WO 2008156364A1 NL 2008050404 W NL2008050404 W NL 2008050404W WO 2008156364 A1 WO2008156364 A1 WO 2008156364A1
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WO
WIPO (PCT)
Prior art keywords
layer
support
previous
molecular weight
support according
Prior art date
Application number
PCT/NL2008/050404
Other languages
English (en)
Inventor
Maarten Constant Gerlach Marie Meijlink
Original Assignee
Fujifilm Manufacturing Europe B.V.
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 Fujifilm Manufacturing Europe B.V. filed Critical Fujifilm Manufacturing Europe B.V.
Publication of WO2008156364A1 publication Critical patent/WO2008156364A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • G03C1/775—Photosensitive materials characterised by the base or auxiliary layers the base being of paper
    • G03C1/79—Macromolecular coatings or impregnations therefor, e.g. varnishes
    • 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

Definitions

  • the present invention relates to a support material, in particular a resin coated support material for use in recording applications.
  • the invention further relates to a recording medium comprising such a support material.
  • support materials used in recording media comprise a substrate on which at least one resin layer is supplied.
  • a receiving medium is applied depending on the recording method used, e.g. an emulsion layer for (conventional) photography applications or an ink receiving layer for inkjet applications.
  • recording media for imaging methods are produced by using a melt- extrusion coating method or co-extrusion method.
  • molten polymer layer(s) is (are) typically extruded through a slot die at elevated temperatures exceeding 270 0 C. While in molten state ⁇ the polymer layer(s) is (are) drawn through the nip of two rollers together with the substrate to be coated.
  • the chill roller is cooled in order to solidify the polymer layer (s).
  • the other roller, the nip roller which is usually provided on its circumference with a layer of a compressible material, applies pressure to effect the adhesion of the substrate and the polymer layer(s).
  • An important aspect of the support is the resin surface appearance, which should be smooth and exhibiting a high gloss. Further it is important that the resin surface of the support does not have too many crater defects, also named pits, which may be caused by air entrapment by the rotation of the chill roll, upon melt-extrusion coating of resin on the substrate. When the number of pits increases, the outer appearance of the support is damaged and the quality of the recording media prepared using such a support deteriorates. The number of pits increases when using higher line-speeds in extrusion coating and therefore it has been difficult to increase the production speed and productivity in the manufacturing of supports for recording media.
  • the number of pits also increases with a reduction of the total thickness of the resin layers of the support. Therefore, it has been difficult to reduce the costs of the supports for recording media.
  • the number of crater defects of a resin coated substrate can be reduced by the increase of the melt temperature of the resin layers above the temperature, which is needed to assure the adhesion of the resin layer(s) with the substrate. This is generally not preferred because of its associated risks for generating more defects, for instance, because it maygive rise to die drool. These defects lead to a deterioration of the appearance of the support and require a production stop to remedy them.
  • EP-A- 0 285 146 describes a method of reducing the number of crater defects at high extrusion line speeds such as 200 m/min, by replacing the air on the chill roller with a gas which can escape more readily through the extruded resin film.
  • JP-A-Il 352 638 A describes another method at high extrusion line speeds such as 200 m/min in which a resin film coming out of an extruder is passed between a nip and a cooling roller along with the base material and where the temperature of the resin film in the nip is increased.
  • EP-A-I 130 460 describes another method at high extrusion line speeds such as 300 m/min in which a paper substrate is heated prior to extrusion coating with polymer resin layer(s). Also other applications propose methods for the reduction of craters with a major disadvantage in the technical complexity or potential risk for damage to production equipment of the proposed system or increased number of production steps in producing the support.
  • JP-A-Il 352 637 a process is described in which after the first nip, new pressing with hot roller(s) is used at least one time, and in US-A-4994 357 a process is described in which upon extrusion coating the molten resin layer(s) are passed between a chill roller and a back-up roller under a linear pressure up to 200 kg/cm and in JP-A- 59 198 451 a process is described in which the support is prepared by double consecutive extrusion coating.
  • WO-A-2006/043815 describes the use of a polymer from C3+ -alpha- olefin monomer in the outermost layer from a substrate wherein the topside is provided with at least two resin layers for improving the crater-like defects.
  • WO-A-2006/115400 describes the use of a polyethylene with a density less than 0.90 g/cm 3 in the outermost resin layer from a substrate whereinrat least the top-side is provided by at least two layers for improving the crater like defects.
  • the present invention is directed to a support for recording media wherein at least the topside is provided with at least three resin layers wherein at least the outermost resin layer, and optionally one or more layers adjacent to the outermost layer comprise a low density polyethylene having a narrow molecular weight distribution characterized by having a fraction of mplecular weight (Mw) smaller than 10 mass % with Log Mw > 5.5, which fraction is relative to the total amount of molecular weights of said low density polyethylene in said layer or each of said layers.
  • Mw fraction of mplecular weight
  • the present invention provides a support comprising a substrate having a topside and a backside, wherein at least the topside is provided with at least three resin layers wherein the outermost resin layer or both outermost layer and layer adjacent the outermost layer comprise a low density polyethylene (LDPE) having a narrow molecular weight distribution characterized by having a fraction of molecular weight (Mw) with Log Mw > 5.5 of less than 10 mass %.
  • LDPE low density polyethylene
  • Mw fraction of molecular weight
  • the topside is in particular the side that is intended to be provided with a receiving medium, such as a recording medium.
  • the "narrow" molecular weight distribution that is required for the present invention is conveniently expressed by referring to fractions at specified log Mw in mass % of the LDPE resin relative to the total amount of all molecular weights of this LDPE resin present in each respective layer.
  • Log Mw is the 10 log of the molecular weight (Mw) expressed in g/mol of the resin LDPE sample in question.
  • log Mw > x refers to the fraction of a resin sample having a Mw of at least 10*.
  • x 5.5
  • the fraction of the LDPE with a molecular weight above 316000 g/mol in mass % versus the total amount of all molecular weights of this particular LDPE is being referred to.
  • Log Mw is conveniently determined using a protocol comprising size exclusion chromatography/multi-angle laser light scattering (SEC/MALLS) using procedures and apparatuses detailed hereinbelow.
  • the LDPE used is preferably non-oriented.
  • non-oriented resin means that the resin has not been stretched in a direction after the extrusion coating process for instance in order to create microvoids when stretching is done in the presence of void-initiating materials in the resin.
  • the present invention it has become possible to provide a support for a recording medium that can be produced atTiigh line speeds, without unacceptable crater defects and neck-in and edge-tear phenomena. Furthermore the support of the present invention can be produced at high speeds with a lower thickness of polymer resin, expressed as weight of resin per surface area.
  • the invention also provides a support for recording media which can be produced at relatively low resin melt temperature at high line speeds during melt extrusion coating with a low amount of crater defects.
  • the invention provides furthermore a support for recording media that gives a high smoothness and gloss, while using readily available, easily processable, low cost polyolefin raw materials.
  • LDPE species obtainable by a process in which the polymerization of ethylene takes place in a tubular reactor at a peak temperature between 290 and 350 0 C.
  • LDPE is used with a fraction of molecular weight with log ⁇ Mw > 5.5 of less than 6 mass %.
  • the LDPE in said outermost layer or said both layers has a melt flow index (MFI) of above 4 g/10 min, as measured according ASTM D1238-62T.
  • LDPE in said outermost layer or said both layers has a MFI index of above 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 or above 35, 36, 37, 38, 39 or even above 60 g/10 min as measured according ASTM D1238-62T.
  • MFI index of above 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 or above 35, 36, 37, 38, 39 or even above 60 g/10 min as measured according ASTM D1238-62T.
  • a higher MFI index above 70 will not result in a visible better crater defect appearance so from practical point there is no need to go higher than 70.
  • the outermost layer(s) may comprise mixtures of afore mentioned inventive LDPE. Furthermore in the present invention the outermost layer(s) may comprise apart from the inventive LDPE other polymers or resins. With increase of these other polymers and resins in said outermost layer or said both layers the occurrence of crater defect again increases. Therefore, from a practical point of view in a trade-off between crater defects and other properties, these said outermost layer or said both layers should comprise at least 50 wt.%, more preferably 70 wt.% and even more preferred ⁇ 90 wt.% of said inventive LDPE.
  • the coating weight of the outermost layer of the support of the present invention there is no limit to the coating weight of the outermost layer of the support of the present invention.
  • the coating weight of the outermost layer is preferably 3 g/m 2 or lees, more preferably 1 g/m 2 or less however from practical coating point of view the coating weight is present with a minimum of 0.2 g/m 2 .
  • the outermost layer of the support of the present invention may be coloured with one or more white opacifying pigments when required e.g. for improvement of image sharpness in the case that the support is used for instance as a support for a photographic printing paper or for improvement of the whiteness or opacity of the support.
  • This white opacifying pigment may be selected from any of the white pigments described in the art, such as anatase type titanium dioxide, rutile titanium dioxide, zinc oxide, zinc sulphide, lithopone and the like, and mixtures of any of these.
  • the type of white pigment in the outermost layer of the support of the present invention preferably comprises anatase type or rutile type titanium dioxide, or mixtures of these titanium dioxide types of pigments.
  • the particle size of the anatase type or rutile type titanium dioxide is between 0.1 ⁇ m and 0.4 ⁇ m and the concentration of the white pigment in the outermost layer of the support does not exceed 20 weight % based on the total weight of the outermost layer. Higher amounts may give rise to die drool and these defects will lead to deterioration of the appearance of the support and require a production stop to remedy them. If present, the amount of white pigment is at least 5%.
  • the outermost layer of the support of the present invention may be provided with one or more substances, such as ⁇ known additives for resin coated substrates. In particular the outermost layer may contain additional (small) quantities of one or more coloured dyes or pigments and/or blueing agents, e.g.
  • One or more optical brighteners most preferably bis-benzoxazole type optical brighteners, may be present.
  • One or more antioxidants e.g. hindered phenol type anti-oxidants, phosphite type anti-oxidants, lactone type anti-oxidants and mixtures of these, may be present.
  • the outermost layer may comprise one or more additives selected from the group consisting of anti-static agents; UV- stabilisers and/or light stabilisers, e.g.
  • the second resin layer of a support adjacent to the outermost layer of the present invention usually has a coating weight of between 5 g/m 2 and 50 g/m 2 , and preferably between 9 g/m 2 and 25 g/m 2 .
  • the second layer of the present invention may further comprise one or more white opacifying pigment to enhance the whiteness and opacity of the support, or in the case this support is used as a support for a photographic paper to increase the sharpness of the image.
  • This white opacifying pigment can be selected from any of the white pigments described in the art, like anatase type titanium dioxide, rutile titanium dioxide, zinc oxide, zinc sulphide, lithopone and the like, and mixtures thereof.
  • the type of white pigment in the second layer of the supp ⁇ rtrof the present invention comprises anatase type or rutile type titanium dioxide, or a mixture of these pigments.
  • the particle size of the anatase type or rutile type titanium dioxide is between 0.1 ⁇ m and 0.4 ⁇ m and the concentration of the white pigment in the second layer of the support does not exceed 35 weight % based on the total weight of the second layer.
  • the anatase type titanium dioxide is preferably used in order to obtain a very good whiteness.
  • the pigment types in the outermost layer and in the second layer may be chosen independently from each other. For example, titanium dioxide of the anatase type may be used in one of the layers and titanium dioxide of the rutile type may be used in another layer.
  • the second resin layer of the support of the present invention may contain additionally one or more pigments like nacreous pigments and/or (small quantities of) one or more coloured dyes or pigments and/or blueing agents, e.g. ultramarine blue and/or violet, cobalt blue, phosphoric oxide cobalt, quinacridone pigments and mixtures of these.
  • UV-stabilisers and/or light stabilisers e.g. hindered amine light stabilisers, nickel chelates, substitutes benzophenones or benzotriazole, and other substances used as known additives for resin coated recording media may be selected.
  • the second resin layer of the support of the present invention may contain one or more adhesion promoting additives, e.g. as known in the art, in order to improve the adhesion of the second layer with the outermost resin layer.
  • tie layer as described in the art to promote adhesion between the second resin layer and the outermost resin.
  • the application of a third layer below the second layer of the present invention may be advantageous in order to prevent the generation of die lip stripes in the case that the second layer of the present invention comprises a high concentration of titanium dioxide or other pigments.
  • the third layer of the present invention may have a coating weight between 1 g/m 2 and 50 g/m 2 , and preferably between 2 g/m 2 and 25 g/m 2 .
  • the type of resin used in the third layer is a polyolefin type or a olefin copolymer or a mixture of various olefinic polymer type resins.
  • the type of resin used in the third layer is.
  • the third layer comprises mixtures of LDPE with a broad molecular distribution with a fraction of molecular weight with log Mw > 5.5 ⁇ that is higher than 20 mass %.
  • the use LDPE with narrow molecular weight distribution in the third layer in case this layer is the lowermost layer in contact with the substrate has as serious disadvantage that web-instabilities may result in occurrence of edge tears and web breaks.
  • the third layer of the present invention further preferably comprises a white opacifying pigment or a mixture of white opacifying pigments, most preferably an anatase type or rutile type titanium dioxide or mixture of these pigments with a particle size between 0.1 ⁇ m and 0.4 ⁇ m.
  • the concentration of the white pigment in the third layer preferably does not exceed 20 weight % based on the total weight of this third layer and most preferably does not exceed 15 weight %.
  • the pigment types in the third layer and in the second layer may be chosen independently from each other. So, titanium dioxide of the anatase type may be used in one of the layers and titanium dioxide of the rutile type may be used in the another layer.
  • the third layer may comprise additional (small) quantities of one or more coloured dyes or pigments and/or blueing agents, e.g. ultramarine blue and/or violet, cobalt blue, phosphoric oxide cobalt, quinacridone pigments and mixtures of these.
  • one or more additives may be selected from the group consisting of optical brighteners, most preferably bis-benzoxazole type optical brighteners, antioxidants, e.g. hindered phenol type anti-oxidants, phosphite type antioxidants, lactone type anti-oxidants and mixtures of these, anti-static agents e.g. semi-conductive metal oxide particles, UV-stabilisers and/or light stabilisers, e.g.
  • the third resin layer of the support of the present invention may comprise adhesion promoting additives as- known in the art in order to improve the adhesion of the third layer with the 2 nd adjacent resin layer, to improve the adhesion of the third resin layer towards the substrate or when the lower-most resin is a tie layer to improve the adhesion from the third resin-layer to this tie layer.
  • adhesion promoting additives are, but not limited to those alone, disclosed in US-A-5 466 519.
  • the melt temperature of a third resin layer of the present invention when utilized as the lowermost resin layer which is in contact with the substrate, can be chosen at a sufficiently high level to promote the adhesion of this third layer to the substrate without the need of expensive adhesion promoting additives and/or tie layers.
  • the melt temperature should be at least 300 0 C and more preferably at least 280 0 C.
  • the adhesion of the resin to the substrate can be improved by giving the lowermost resin layer an ozone melt treatment.
  • the support of the present invention comprising a substrate having a topside and a backside, can also be provided on its backside with at least one resin layer and/or at least one otheru ⁇ ating layer depending on the properties to be achieved like for instance waterproofing, anti-static, anti-curling, antiblocking, anti-slip, splice strength, and/or the ability to receive and retain prints (e.g. bar codes or other indicia containing useful information).
  • this backside is preferably extrusion coated with polyethylene resin(s) and most preferably a mixture of low density polyethylene and high density polyethylene.
  • an anti-static coating, an anti-sticking coating and so on may be provided.
  • the substrate of the support of the present invention can be chosen from any substrate known in the art like a raw paper base comprising high quality natural pulp such as a photographic paper base, a pigment coated paper base, a synthetic paper base or a polymer sheet base.
  • the preferred substrate in the present invention is a raw paper base containing high quality natural pulp.
  • the layer structure of the present invention can be applied on the topside only or on the topside and also the backside of the substrate. If necessary, the front surface, and optionally also the back surface of the substrate of the support of the present invention is subjected to an activation treatment before the melt-extrusion process.
  • the treatment may comprise a corona treatment and/or a flame treatment and/or ozone treatment and/or plasma treatment and/or plasma deposition treatment and/or a heat treatment and/or chemical priming.
  • the support of the present invention can be manufactured by (tandem) extrusion coating techniques or consecutive extrusion coating techniques as described in the art. Most preferably the support of the present invention is manufactured by a co-extrusion technique in which all resin layers of the present invention and if required tie layers are applied to the substrate at the same time using feed block techniques or multi manifold die techniques. This greatly increases the economy of the manufacturing of the support.
  • the molten resin which is extruded from the die can furthermore be treated by ozone in order to improve the adhesion between the resin and the substrate.
  • the melt temperature of the resin layer which is extruded from the die is at least 280 0 C.
  • the preferred speeds for the co-extrusion process for the manufacturing of the support of the present invention may be up to 300 m/min or .even more than 400, 500 or 600 m/min which even more increases the economy of the manufacturing of the support. It is also possible to reduce the total amount of extrusion coated resin, while keeping the same amount of pits. It is for example possible to reduce the amount of topside coated resins from 30 g/m 2 to 20 g/m 2 by changing over a LDPE with a broad molecular weight distribution to a LDPE with a narrow molecular weight distribution as described in the present invention keeping the same amount of pits.
  • the nip pressure of the manufacturing of the support of the present invention is below 1500 N/cm, more preferably below 700 N/cm.
  • the surface structure of the chill roll used in the manufacturing of the support of the present invention can be any glossy structure, including a mirror glossy type surface because of the many advantages of the present invention, however, most preferred is a glossy fine matte surface.
  • the amount of crater defects can even be further reduced when the present invention is combined with a higher temperature of the cooling medium in the chill roller.
  • the cooling medium temperature is higher than 12 0 C but not exceeding 50 0 C.
  • the invention further relates to a recording medium, comprising a support as described herein and a receiving medium.
  • the receiving medium is usually provided at the side of the outermost resin layer that is remote from the substrate.
  • the receiving medium may be a photographically active layer, such as an emulsion layer for photography, an ink receiving layer (such as from inkjet applications) a recording layer for thermal paper application or a recording layer for electro-photographical paper application.
  • the recording medium may be manufactured in a manner known in the art.
  • the invention further relates to the use of LDPE with a narrow molecular weight distribution having a fraction of molecular weight with log Mw > 5.5 of less than 10 mass % to reduce crater defect formation in a support material for a recording medium.
  • the present invention will be elucidated below in further detail with reference to the examples, but the present invention will not be limited thereto. Unless otherwise indicated, all parts, percents, ratios and the like are by weight.
  • the ultramarine pigments used in the examples are a mixture of ultramarine violet and ultramarine blue.
  • the optical brightener used in the examples is a bis-benzoxazole substituted stilbene type optical brightener.
  • Table 1 summarizes the resins which were used in the production of the various examples.
  • melt flow indexes of the LDPE resins were measured at 190 °C/
  • Log Mw was determined after size exclusion chromatography/Multi- Angle laser light scattering. (SEC/MALLS). Size exclusion chromatography was carried out on a PL-GPC210 GPC equipped with a Wyatt DAWN EOS detector and PL 20 ⁇ m mixed A columns (2*) LS. 1,2,4-trichlorobenzene is used as solvent for SEC measurements at high temperature. The columns were calibrated with narrow molar mass distribution certified HDPE standards. The software used is Wyatt Astra 4.90, origin 7.0. The samples are measured under standard SEC-MALLS conditions with the EOS MALLS detector at 160 0 C and the GPC column oven at 160 °C. The fraction in molecular weight above Log Mw 5.5 was determined by integration in mass % relative to the total molecular weight amount.
  • the amount and size of the crater defects were measured by microscope combined with image analysis software provided by Optel BV.
  • the software divides the crater defects into 10 classes. The last 7 classes are the most important for the visual judgment of the quality of the substrate.
  • a weighed average which gives preferential treatment to the larger size classes is used for the analysis of the crater defect data.
  • the results are rated from 1 to 10, with 1 being the worst with respect to crater defects and 10 being the best with respect to crater defects.
  • the rating of 5 is the internal reference.
  • Example series Corona treatment activated photographic base paper (weight 163 g/m 2 ) were co-extrusion coated at the topside with three resin layers, an 1 g/m 2 outermost resin layer or skin layer with materials from table 1, 12.5 g/m 2 of a middle layer containing materials from table 1, 25 % anatase titanium dioxide and further more ultramarine pigments and optical brightener, and a variable weight (6.5 or 16.5 g/m 2 ) of a lowermost layer adjacent to the base paper containing material A from table 1, 5 % anatase titanium dioxide and further more ultramarine pigments.
  • the resin layers were co-extrusion coated with a line speed of 420 or 600 m/min, a melt temperature of 325 °C and a nip pressure of 700 N/cm. -
  • the average roughness (Ra) of the photographic base paper was 1.4 ⁇ m.
  • Roughness (R a ) method according to ISO 4287-1997 cut-off wave-length ( ⁇ c) : 0.8 mm sample measuring length: 5.6 mm apparatus/type : Mahr Perthometer/M3

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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)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Abstract

La présente invention concerne un support pour un moyen d'enregistrement comprenant un substrat présentant une face supérieure et une face arrière sur lequel au moins la face supérieure est pourvue d'au moins trois couches de résine, la couche extérieure ou les deux couches extérieures et la couche jouxtant à la couche extérieure comprennent un polyéthylène basse densité avec une distribution étroite de poids moléculaire présentant une fraction de poids moléculaire avec un log poids moléculaire ≥ 5,5 de moins de 10 % en poids.
PCT/NL2008/050404 2007-06-20 2008-06-20 Support multicouche WO2008156364A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07110698 2007-06-20
EP07110698.3 2007-06-20

Publications (1)

Publication Number Publication Date
WO2008156364A1 true WO2008156364A1 (fr) 2008-12-24

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5457016A (en) * 1992-09-01 1995-10-10 Felix Schoeller Jr. Papierfabriken Gmbh & Co. Kg Photographic support material with polyolefin back coating blend
US20010021442A1 (en) * 2000-02-28 2001-09-13 Rainer Steinbeck Support material
WO2006115400A1 (fr) * 2005-04-25 2006-11-02 Fujifilm Manufacturing Europe B.V. Support d'enregistrement multi-couches

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5457016A (en) * 1992-09-01 1995-10-10 Felix Schoeller Jr. Papierfabriken Gmbh & Co. Kg Photographic support material with polyolefin back coating blend
US20010021442A1 (en) * 2000-02-28 2001-09-13 Rainer Steinbeck Support material
WO2006115400A1 (fr) * 2005-04-25 2006-11-02 Fujifilm Manufacturing Europe B.V. Support d'enregistrement multi-couches

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