EP2993052B1 - Multilayer laminar element and method for transferring images to a three-dimensional surface - Google Patents

Multilayer laminar element and method for transferring images to a three-dimensional surface Download PDF

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Publication number
EP2993052B1
EP2993052B1 EP14791329.7A EP14791329A EP2993052B1 EP 2993052 B1 EP2993052 B1 EP 2993052B1 EP 14791329 A EP14791329 A EP 14791329A EP 2993052 B1 EP2993052 B1 EP 2993052B1
Authority
EP
European Patent Office
Prior art keywords
cover
laminar element
layer
ink
dimensional surface
Prior art date
Legal status (The legal status 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 status listed.)
Not-in-force
Application number
EP14791329.7A
Other languages
German (de)
French (fr)
Other versions
EP2993052A4 (en
EP2993052A1 (en
Inventor
Julio Gomez Portela
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2993052A1 publication Critical patent/EP2993052A1/en
Publication of EP2993052A4 publication Critical patent/EP2993052A4/en
Application granted granted Critical
Publication of EP2993052B1 publication Critical patent/EP2993052B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C11/00Auxiliary processes in photography
    • G03C11/12Stripping or transferring intact photographic layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/12Transfer pictures or the like, e.g. decalcomanias
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/175Transfer using solvent

Definitions

  • the invention relates to a multilayer laminar element conceived for making it easy to transfer or apply images to a body, object or surface, particularly a three-dimensional surface, with primarily decorative functions, by superimposing and attaching one of the laminar layers of the multilayer laminar element integrating a printed image on said three-dimensional surface and eliminating another layer or layers.
  • the invention also relates to a method for transferring images to a body using the mentioned multilayer laminar element.
  • image in the present specification must be understood as being extensive to any graphic composition, with images or a mixed composite with text and images.
  • Patent document EP 1 102 122 B1 discloses a method for transferring an image to a three-dimensional body using a gelatin sheet. This invention proposes the steps of:
  • Printing on the sheet is advantageously performed by means of ink-jet printing.
  • the sheet is subjected to heating at a temperature in the order of 35 to 45°C, during the step of applying it to said three-dimensional surface or body.
  • the printed image is generally not on the contact surface of the gelatin sheet and the three-dimensional body/object or surface, but the sheet can also be attached on a surface such that the image is on contact face with said surface. In this case, if the ink of the image is impermeable the, contact face of said surface must be impregnated with an adhesive.
  • the described method has been shown to be very useful, it suffers from the drawback derived from the dimensional instability of gelatin taking into account that the gelatin sheet must be attached at all times to the three-dimensional surface, as a support for the transferred printed image. Said instability is particularly due to changes and/or variations that may be experienced in relative humidity and temperature of the environment surrounding the sheet over time, which can compromise the fixing thereof to the three-dimensional surface and deteriorate the image it supports.
  • the invention proposes an alternative laminar element and a method for transferring images to a three-dimensional surface using said multilayer laminar element.
  • the invention proposes a multilayer laminar element for transferring images to a three-dimensional body or surface comprising in a basic embodiment:
  • the mentioned first layer when moistened, becomes soft and elastic as explained in the European patent mentioned as a background document, which allows, particularly by means of the use of an adhesive arranged on the second layer or cover, after printing thereof with the image to be transferred, applying the composition to said three-dimensional surface with the printed face of the cover facing and in contact with said surface. Then, the aforementioned first gelatin layer, in the moistened state, can be readily separated from the cover, the image accompanying it then being completely integrated on the three-dimensional surface of interest.
  • the gelatin sheet is used as a support for the second layer or cover which is where the image will be printed and which will be applied to the three-dimensional surface or body.
  • the transparent cover can have various compositions, such as a polyurethane, an acrylic copolymer and mixtures thereof. Some conditions relating to the material used will be indicated below, depending on the ink used in the printing process.
  • the cover has a thickness that is much less than that of the gelatin layer, which is from 60 to 70 microns, whereas said cover can be from 3 to 40 microns, and generally between 3 and 20 microns. Said reduced thickness results in applying the printed image with minimal alteration of the features of the three-dimensional surface on which it is fixed through the mentioned cover, leading to full integration printing of the image on said outer surface.
  • the gelatin sheet will readily detach from the cover.
  • it is envisaged as having an intermediate layer that is soluble with the humidity, selected from, for example, acacia gum or polyvinyl alcohol.
  • permeable covers (microporous or nanoporous), which would be applied on the cover before printing, have been described.
  • the multilayer composition will be taken, in a rigid state, to the object to which it would be adhered superficially, subsequently moistening the gelatin layer to make it elastic and then pressing the laminar element against the three-dimensional surface where the cover must be attached, finally proceeding to detach the gelatin layer.
  • the adhesive used can be different types of adhesives:
  • the proposed method for transferring images comprises performing the following steps:
  • the method for transferring the multilayer element to a three-dimensional surface can be carried out in several ways according to the nature of the layer or layers constituting said multilayer laminar element.
  • an aqueous adhesive is applied so that when the multilayer composition receives humidity, it becomes elastic and readily adheres to the three-dimensional surface of a body or object.
  • the multilayer laminar element integrates an impermeable and elastic layer, which is either the actual cover receiving the printing or an additional layer, interposed between said cover and the gelatin layer, the composition is superficially adhered to the irregular surface or object by means of an adhesive arranged on said cover; humidity is subsequently applied to the gelatin layer so it becomes elastic; the multilayer element is then pressed against the three-dimensional surface and is adhered to same; and the gelatin layer is finally removed as a result of the humidity.
  • the cover can become adhesive when it is moistened, which would allow applying said cover on the three-dimensional surface without requiring additional adhesives.
  • the moistened gelatin layer would finally be removed as explained above.
  • the multilayer laminar element is applied to a three-dimensional object using to that end a mold envisaged for shaping said object.
  • the printed and moistened multilayer laminar element is fitted to the walls of a mold, arranging the gelatin layer in contact with the inner wall of the mold.
  • a material is then deposited inside the mold and said mold is optionally closed.
  • the material is removed from the mold, with the multilayer laminar element adhered by the cover layer thereof to the outer surface of the molded body.
  • the gelatin layer is removed from the multilayer laminar element, and the body is decorated with a printed image.

Description

    Technical Field
  • The invention relates to a multilayer laminar element conceived for making it easy to transfer or apply images to a body, object or surface, particularly a three-dimensional surface, with primarily decorative functions, by superimposing and attaching one of the laminar layers of the multilayer laminar element integrating a printed image on said three-dimensional surface and eliminating another layer or layers.
  • The invention also relates to a method for transferring images to a body using the mentioned multilayer laminar element.
  • The reference made to "image" in the present specification must be understood as being extensive to any graphic composition, with images or a mixed composite with text and images.
  • Background of the Invention
  • Patent document EP 1 102 122 B1 , belonging to the same inventor as the present invention, discloses a method for transferring an image to a three-dimensional body using a gelatin sheet. This invention proposes the steps of:
    • providing an unsupported gelatin sheet;
    • printing an image onto the gelatin sheet when it is in the solid state (with a water content less than 10%);
    • moistening the sheet such that it becomes soft and flexible, and
    • applying the sheet in this soft and flexible state on a three-dimensional surface or body, where, taking advantage of the elasticity and of the fact that it is adhesive in this state, it is fixed by said application to said three-dimensional surface or body, providing the printed image and being applied in situ.
  • Printing on the sheet is advantageously performed by means of ink-jet printing.
  • In a preferred embodiment, the sheet is subjected to heating at a temperature in the order of 35 to 45°C, during the step of applying it to said three-dimensional surface or body.
  • The printed image is generally not on the contact surface of the gelatin sheet and the three-dimensional body/object or surface, but the sheet can also be attached on a surface such that the image is on contact face with said surface. In this case, if the ink of the image is impermeable the, contact face of said surface must be impregnated with an adhesive.
  • Although the described method has been shown to be very useful, it suffers from the drawback derived from the dimensional instability of gelatin taking into account that the gelatin sheet must be attached at all times to the three-dimensional surface, as a support for the transferred printed image. Said instability is particularly due to changes and/or variations that may be experienced in relative humidity and temperature of the environment surrounding the sheet over time, which can compromise the fixing thereof to the three-dimensional surface and deteriorate the image it supports.
  • For this reason, the invention proposes an alternative laminar element and a method for transferring images to a three-dimensional surface using said multilayer laminar element.
  • Description of the invention
  • For that purpose, the invention proposes a multilayer laminar element for transferring images to a three-dimensional body or surface comprising in a basic embodiment:
    • a first gelatin layer in the solid state (water content less than 10%), and
    • a second layer (or several layers) superimposed on the preceding layer, integrating a transparent, elastic (or one that acquires elasticity due to moistening) and printable (advantageously by means of an ink-jet printer) cover for thus receiving the image to be transferred.
  • The mentioned first layer, when moistened, becomes soft and elastic as explained in the European patent mentioned as a background document, which allows, particularly by means of the use of an adhesive arranged on the second layer or cover, after printing thereof with the image to be transferred, applying the composition to said three-dimensional surface with the printed face of the cover facing and in contact with said surface. Then, the aforementioned first gelatin layer, in the moistened state, can be readily separated from the cover, the image accompanying it then being completely integrated on the three-dimensional surface of interest.
  • It is obvious that the mentioned adhesive for fixing the proposed multilayer laminar element could be deposited on the three-dimensional surface to which it must be attached, placing the mentioned cover against the surface with adhesive.
  • In other words, in the present invention the gelatin sheet is used as a support for the second layer or cover which is where the image will be printed and which will be applied to the three-dimensional surface or body.
  • In the event that more than one of the layer or layers could be used, as a cover they have the feature of being transparent and printable. With respect to being elastic, this will be due to the nature of the material of the sheet or it is the result of the humidity provided to the gelatin sheet prior to or during the operation of applying the multilayer element on the three-dimensional surface for transferring the image
  • The transparent cover can have various compositions, such as a polyurethane, an acrylic copolymer and mixtures thereof. Some conditions relating to the material used will be indicated below, depending on the ink used in the printing process.
  • Generally the cover has a thickness that is much less than that of the gelatin layer, which is from 60 to 70 microns, whereas said cover can be from 3 to 40 microns, and generally between 3 and 20 microns. Said reduced thickness results in applying the printed image with minimal alteration of the features of the three-dimensional surface on which it is fixed through the mentioned cover, leading to full integration printing of the image on said outer surface.
  • Efforts will be made so that with the humidity provided in the process of application, the gelatin sheet will readily detach from the cover. In an alternative embodiment, it is envisaged as having an intermediate layer that is soluble with the humidity, selected from, for example, acacia gum or polyvinyl alcohol.
  • An important aspect to be taken into account is based on the ink used for the ink-jet printing process.
  • Three fundamental types of ink have been identified and tested for said (ink-jet) printing process to implement this invention:
    • Ultraviolet-curable inks, which adhere perfectly in a wide range of materials, which allows using a polyurethane, an acrylic copolymer, a vinyl resin or mixtures thereof as a cover.
    • Solvent and eco-solvent inks. Polyurethanes, acrylic resins as well as mixtures of both can be used to assure correct printing.
    • Aqueous inks. There are a number of formulations in the state of the art which allow for correct printing. The cover on which the image is printed has to be water-absorbent in this case and it must also absorb other components present in the ink. Suitable formulations can comprise polyvinyl alcohol (PVA) or some polyurethanes.
  • In the case of aqueous inks and given that the ink-receiving layer (the cover) must necessarily be water-absorbent, are proposed two configurations:
    • The adhesive used, which is superimposed on the cover, is aqueous, such that it will transmit humidity to the set of layers, making it elastic and adherent in this process.
    • The adhesive used is an aqueous adhesive, but an impermeable layer is arranged between the image-receiving layer (cover) and the gelatin sheet. This impermeable interposed layer will provide features of impermeability, transparency and elasticity. An acrylic copolymer can be used for said impermeable layer.
  • Furthermore and to improve the rate of absorption of the aqueous inks, permeable covers (microporous or nanoporous), which would be applied on the cover before printing, have been described.
  • If the adhesive is not aqueous, the multilayer composition will be taken, in a rigid state, to the object to which it would be adhered superficially, subsequently moistening the gelatin layer to make it elastic and then pressing the laminar element against the three-dimensional surface where the cover must be attached, finally proceeding to detach the gelatin layer.
  • On the other hand, the adhesive used can be different types of adhesives:
    • ultraviolet-curable (UV-curable) adhesive;
    • polyvinyl acetate,
    • pressure-sensitive adhesive
  • The proposed method for transferring images comprises performing the following steps:
    • preparing a multilayer laminar element by applying a cover of a transparent, elastic (or one that acquires elasticity due to pressure-sensitive) and printable material on a gelatin layer in the solid state (humidity content less than 10%);
    • printing said cover advantageously by means of an ink-jet printing process;
    • applying an adhesive (which can be provided by the surface on which the laminar element is applied);
    • moistening said multilayer laminar element (if it was not moistened by the applied adhesive);
    • applying the moistened and elastic laminar element on a three-dimensional surface or body with said cover facing and in contact with said three-dimensional surface or body; and
    • removing said gelatin layer, separating it from the cover which remains adhered to said three-dimensional surface or body.
  • Once the cover has been printed, the method for transferring the multilayer element to a three-dimensional surface can be carried out in several ways according to the nature of the layer or layers constituting said multilayer laminar element.
  • If the cover is permeable, an aqueous adhesive is applied so that when the multilayer composition receives humidity, it becomes elastic and readily adheres to the three-dimensional surface of a body or object.
  • If the multilayer laminar element integrates an impermeable and elastic layer, which is either the actual cover receiving the printing or an additional layer, interposed between said cover and the gelatin layer, the composition is superficially adhered to the irregular surface or object by means of an adhesive arranged on said cover; humidity is subsequently applied to the gelatin layer so it becomes elastic; the multilayer element is then pressed against the three-dimensional surface and is adhered to same; and the gelatin layer is finally removed as a result of the humidity.
  • In the case of aqueous inks, the cover can become adhesive when it is moistened, which would allow applying said cover on the three-dimensional surface without requiring additional adhesives. The moistened gelatin layer would finally be removed as explained above.
  • In particular embodiment, the multilayer laminar element is applied to a three-dimensional object using to that end a mold envisaged for shaping said object. In this case, the printed and moistened multilayer laminar element is fitted to the walls of a mold, arranging the gelatin layer in contact with the inner wall of the mold. A material is then deposited inside the mold and said mold is optionally closed. When, due to the molding process, the material has set, it is removed from the mold, with the multilayer laminar element adhered by the cover layer thereof to the outer surface of the molded body. Finally, the gelatin layer is removed from the multilayer laminar element, and the body is decorated with a printed image.
  • The features of the invention are described in the following claims.

Claims (15)

  1. A multilayer laminar element for transferring images to a three-dimensional surface, comprising:
    - a first gelatin layer with a humidity content less than 10%, which, when moistened, becomes soft and elastic, and
    - at least a second layer providing a transparent cover of said first layer, said transparent cover being elastic or being able to become elastic due to humidity, and intended for being printed on so that it can receive the printed image to be transferred,
    - said multilayer laminar element being able to be adhered to a three-dimensional surface by means of an adhesive, with the transparent cover facing and in contact with said three-dimensional surface and said first gelatin layer being removable in the moistened state, after applying the multilayer laminar element to a three-dimensional surface.
  2. The multilayer laminar element according to claim 1, characterized in that said first gelatin layer has a thickness of between 60 to 70 microns, whereas said cover has a thickness of 3 to 20 microns.
  3. The multilayer laminar element according to claim 1, characterized in that said printing is:
    ink-jet printing; or
    ink-jet printing selected from an ultraviolet-curable ink, a solvent or eco-solvent ink or an aqueous ink.
  4. The multilayer laminar element according to claim 3, characterized in that:
    the printing ink is an ultraviolet-curable ink and the cover is a polyurethane, an acrylic copolymer, a vinyl resin or the mixtures thereof; or
    the printing ink is a solvent or eco-solvent ink and the cover is a polyurethane, an acrylic resin or a mixture of both.
  5. The multilayer laminar element according to claim 3, characterized in that the printing ink is an aqueous ink and the cover is water-absorbent and selected from polyvinyl alcohol, polyvinylpyrrolidone or a polyurethane.
  6. The multilayer laminar element according to claim 5, characterized in that the adhesive used is aqueous.
  7. The multilayer laminar element according to claim 5, characterized in that said second layer incorporates a permeable cover selected from a microporous or nanoporous cover.
  8. The multilayer laminar element according to claim 5, characterized in that it further comprises an impermeable, transparent and elastic layer between said cover-forming second layer, which is at least one in number, and said first gelatin layer.
  9. The multilayer laminar element according to claim 1, characterized in that said adhesive is selected from a UV-curable adhesive, a vinyl adhesive or a pressure-sensitive adhesive.
  10. The multilayer laminar element according to claim 1, characterized in that it integrates an impermeable and elastic layer, which is either the actual cover receiving the printing or an additional layer, interposed between said cover and the gelatin layer.
  11. A method for transferring images to a three-dimensional surface, characterized in that it comprises
    - preparing a multilayer laminar element by applying a cover of a transparent, elastic and printable material on a gelatin layer in the solid state (with a humidity content less than 10%);
    - printing said cover with the image to be transferred;
    - moistening said multilayer laminar element;
    - applying the moistened multilayer laminar element on a three-dimensional surface by arranging the mentioned cover in contact with said three-dimensional surface and fixed thereto with the aid of an adhesive, and
    - removing said gelatin layer, separating it from the cover which remains adhered to said three-dimensional surface or body.
  12. The method according to claim 11, characterized in that said adhesive is added to said cover or applied on the three-dimensional surface to be decorated.
  13. The method according to claim 11, characterized in that:
    - said multilayer laminar element is applied, printed and moistened, to the inner walls of a mold for molding an object, with the gelatin layer in contact with the inner wall of the mold;
    - a material is deposited for forming the object inside the mold;
    - once it has set, the molded object is taken out together with the laminar element attached to its outer surface; and
    - the gelatin layer is removed from the laminar element.
  14. The method according to claim 11, characterized in that said printing on the mentioned cover is performed by means of ink-jet printing and said ink is selected from an ultraviolet-curable ink, a solvent or eco-solvent ink, or an aqueous ink.
  15. The method according to claim 11, characterized in that the multilayer laminar element furthermore integrates an impermeable and elastic layer, which is either the actual cover receiving the printing or an additional layer, interposed between said cover and the gelatin layer, and in that the composition is superficially adhered to the irregular surface or object by means of an adhesive arranged on said impermeable and elastic layer, the gelatin layer is moistened, so it becomes elastic; the multilayer element is pressed against the three-dimensional surface in order to be adhered to same, and the moistened gelatin layer is finally removed.
EP14791329.7A 2013-04-30 2014-04-29 Multilayer laminar element and method for transferring images to a three-dimensional surface Not-in-force EP2993052B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201330634A ES2523957B1 (en) 2013-04-30 2013-04-30 MULTI-PAPER LAMINARY ELEMENT AND PROCEDURE FOR TRANSFER OF IMAGES TO A THREE-DIMENSIONAL SURFACE
PCT/ES2014/000065 WO2014177732A1 (en) 2013-04-30 2014-04-29 Multilayer laminar element and method for transferring images to a three-dimensional surface

Publications (3)

Publication Number Publication Date
EP2993052A1 EP2993052A1 (en) 2016-03-09
EP2993052A4 EP2993052A4 (en) 2017-03-08
EP2993052B1 true EP2993052B1 (en) 2018-02-28

Family

ID=51843197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14791329.7A Not-in-force EP2993052B1 (en) 2013-04-30 2014-04-29 Multilayer laminar element and method for transferring images to a three-dimensional surface

Country Status (3)

Country Link
EP (1) EP2993052B1 (en)
ES (1) ES2523957B1 (en)
WO (1) WO2014177732A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB323724A (en) * 1928-10-16 1930-01-16 William Henry Steele Improvements in and relating to transfers for decorative and other purposes and to articles, surfaces or the like to which such transfers are applied
US5093221A (en) * 1990-04-10 1992-03-03 E. I. Du Pont De Nemours And Company Process of making colored images using aqueous processable photosensitive elements
TW300204B (en) * 1995-08-25 1997-03-11 Avery Dennison Corp
IT1298430B1 (en) * 1998-02-20 2000-01-10 Danilo Todeschini PERMANENT TRANSFERABLE STICKER IN PARTICULAR FOR DECORATIONS FOR BUILDING AND DECORATION PROCEDURE REALIZED
ES2144948B1 (en) * 1998-03-20 2001-03-01 Gomez Portela Julio USE OF GELATINE FOR SUPPORT AND TRANSFER OF IMAGES.
ES2156555B1 (en) * 1999-06-21 2002-08-01 Gomez Portela Julio PROCEDURE FOR DECORATION OF THREE-DIMENSIONAL SURFACES WITH GELATIN MATERIAL SHEETS.
EP1498285A2 (en) * 2003-07-09 2005-01-19 Danilo Todeschini Decalcomania with transferable decorations in permanent manner and transfer process thereof on a surface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2523957A1 (en) 2014-12-02
WO2014177732A1 (en) 2014-11-06
EP2993052A4 (en) 2017-03-08
ES2523957B1 (en) 2015-09-25
EP2993052A1 (en) 2016-03-09

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