EP2594410A1 - Support imprimable de décorations transférables - Google Patents
Support imprimable de décorations transférables Download PDFInfo
- Publication number
- EP2594410A1 EP2594410A1 EP12193021.8A EP12193021A EP2594410A1 EP 2594410 A1 EP2594410 A1 EP 2594410A1 EP 12193021 A EP12193021 A EP 12193021A EP 2594410 A1 EP2594410 A1 EP 2594410A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- support
- protection layer
- printable
- face
- 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.)
- Granted
Links
- 238000005034 decoration Methods 0.000 title claims abstract description 94
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- 239000000203 mixture Substances 0.000 claims abstract description 31
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000002940 repellent Effects 0.000 claims abstract description 17
- 239000005871 repellent Substances 0.000 claims abstract description 17
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
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- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
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- 239000004753 textile Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 229940036248 turpentine Drugs 0.000 description 1
- 239000012178 vegetable wax Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
- B44C1/1733—Decalcomanias applied under pressure only, e.g. provided with a pressure sensitive adhesive
Definitions
- the present invention regards a printable support for transferable decorations according to the preamble of the main claim.
- the printable support for transferable decorations, object of the present invention is inserted in the field of the production of items for obtaining wall decorations, both for internal settings, such as on walls and ceilings of building rooms, and for external settings, e.g. on building facades, on fencing walls etc.
- the patent GB 1552232 describes a printable support for transferable decorations comprising a first support layer constituted by a paper sheet, a second silicone wax layer provided to coat the first layer, and a third transparent layer made of lacquer or shellac in turn provided to cover the second layer.
- a decoration is painted or printed by means of the deposit of a fourth ink layer.
- a fifth adhesive layer is applied, which is treated with drying agents, such as mica powder, in order to prohibit the adhesiveness thereof during the transport of the printable support to the site where the surface to be decorated is situated.
- the main drawback of the printable support for transferable decorations described in GB 1552232 is due to the fact that it requires long, laborious operations for transferring the decoration printed thereon onto the surface to be decorated, since it is necessary to moisten the printable support in order to apply it to the surface to be decorated, and it is necessary to wait for it to dry before removing the first support layer.
- a further drawback of the printable support described in GB 1552232 is due to the fact that after laying out the fourth ink layer on the third transparent lacquer layer, it is necessary to wait for the latter to dry before spreading the fifth adhesive layer, with consequent long attainment times.
- printable supports were introduced on the market, capable of transferring the decorations dry, i.e. without using water or liquid solvents.
- the patent US 4,228,211 describes a printable support for transferable decorations comprising a first support layer constituted by a polypropylene sheet, a second varnish layer provided to coat the first layer, and a third ink layer deposited on the second transparent layer which forms the decoration to be transferred.
- the printable support also comprises a further fourth transparent varnish layer deposited to coat the third ink layer, and a fifth adhesive layer which is spread on the fourth layer and is covered with a sheet of coated paper.
- the coated paper that covers the fifth adhesive layer and apply the printable support on the surface to be decorated with the side on which such fifth adhesive layer is spread. Subsequently, it is necessary to remove the first support layer, leaving the second and the fourth transparent varnish layer and the third ink layer attached to the wall.
- the third ink layer is deposited as a sandwich between the two transparent varnish layers, with the fourth transparent layer facing towards the surface to be decorated and the second transparent layer facing outward.
- the main drawback of the printable support described in the patent US 4,228,211 is due to the fact that it cannot be employed for transferring decorations on rough, irregular or porous surfaces, such as in particular masonry walls, since the fourth transparent varnish layer cannot be adapted to the irregularities of such surface types; consequently, there is a poor adhesion to the surface to be decorated, which involves an easy detachment of the decoration and thus quick deterioration of the latter.
- a further drawback of the printable support described in US 4,228,211 is due to the fact that it provides for the use of two transparent varnish layers intended to remain attached to the surface to be decorated, which have a relatively high thickness that causes an undesired relief effect of the printable support from the surface on which it is applied.
- Printable supports for transferable decorations are also known from the patents US 4,322,467 and US 3,007,829 which comprise a first support layer constituted by a paper sheet, a second protection layer deposited on the first support layer and composed for example by polyvinyl acetate, and a third layer of mineral or vegetable wax deposited on the second protection layer.
- a fourth transparent layer of glass material is also provided which is deposited on the third wax layer.
- the decoration is printed that to be transferred by means of the deposit of a fifth ink layer.
- a sixth thermoplastic adhesive layer is applied.
- the decoration In order to transfer the decoration, it is necessary to preheat the surface to be decorated, constituted in particular by glass or ceramic, and to subsequently apply the printable support thereon with the side on which the sixth adhesive layer is deposited.
- the heat of the wall brings the sixth thermoplastic adhesive layer to partially melt, in a manner such that the latter is attached to the wall.
- the heat also melts the third wax layer to allow the first support layer and the second protection layer to detach from the transparent layer on which the decoration is printed.
- the second protection layer prevents the melted wax of the second layer from being absorbed by the paper sheet of the first support layer, making the detachment thereof difficult.
- a further drawback of the printable supports described in US 4,322,467 and US 3,007,829 lies in the fact that they require the use of the second protection layer between the first support layer and the third wax layer, with consequent high production costs of the printable supports themselves.
- the printable supports described in US 4,322,467 and US 3,007,829 along with the printable support described in US 4,228,211 , have the drawback that they cannot be employed for transferring decorations on rough, irregular or porous surfaces, such as in particular masonry walls, since the fourth transparent layer of glass material cannot be adapted to the irregularities of such surface types; consequently, there is a poor adherence to the surface to be decorated, which involves an easy detachment of the decoration and hence a quick deterioration of the latter.
- the printable supports of known type briefly described above are not suitable for being employed for transferring decorations over opaque surfaces, i.e. non-translucent surfaces, since their transparent layer - on which the decoration is printed and intended to remain visible in front of the decoration applied to the surface to be decorated - is obtained with materials that give a translucent appearance to the decoration, creating an undesired effect of discontinuity between the non-decorated surface area and the area where the decoration is applied.
- the printable supports for transferable decorations of known type have the serious drawback of being easily and quickly deteriorated following the cracking of the ink layer due to the expansion and shrinkage of the transparent layer, on which the ink layer itself is printed, following variations of temperature, air humidity etc.
- WO2010119471 is a printable support formed by a first layer of paper, textile or plastic material, a second layer of transfer water repellent resin, and a third layer of acrylic, vinyl or polyurethane transparent varnish, for the quick, permanent, dry and cold transfer, on a surface to be decorated, of decorations printed on the third layer.
- the printable support described in the patent W02010119471 and in particular the third layer of such support, nevertheless does not have mechanical properties optimized for allowing the application and permanence of the third varnish layer on surfaces with high roughness. Indeed, the characteristics of high elasticity of the third varnish layer, even if they facilitate the application of the latter on very irregular surfaces, prevent the third varnish layer itself from yielding and being perfectly set on the surface to be decorated, given that over time they can cause the formation of cracks or the lifting of the layer itself from the surface on which it is applied.
- the main object of the present invention is therefore that of eliminating the drawbacks of the solutions of known conventional type mentioned above, by providing a printable support for transferable decorations which allows transferring decorations on any surface type, in particular on rough, irregular or porous surfaces, ensuring an optimal adhesion of the decoration to the surface.
- Further object of the present invention is to provide a printable support for transferable decorations which allows obtaining decorations that are resistant over time, in particular not subjected to the onset of cracking on the ink layer.
- Further object of the present invention is to provide a printable support for transferable decorations which allows transferring decorations on opaque surfaces, ensuring visual uniformity of opacity between the decorated surface area and the non-decorated surface area.
- Further object of the present invention is to provide a printable support for transferable decorations which allows obtaining decorations of particularly thin thickness, and in particular which does not have reliefs from the decorated surface that are visible to the naked eye.
- Further object of the present invention is to provide a printable support for transferable decorations that allows a quick drying of the printed decoration and, in particular, which can be wound in a roll immediately after printing without the ink layer attaching to the back of the support.
- Further object of the present invention is to provide a printable support for transferable decorations, which allows simply and quickly transferring the decorations onto the surface to be decorated, in particular cold (i.e. without the need to heat the surface to be decorated or the printable support itself) and dry (i.e. without the need to wet or moisten the printable support with water or with aqueous solutions) transferring.
- Further object of the present invention is to provide a printable support for transferable decorations that is simple and economical to manufacture.
- the present printable support 1 is intended to be advantageously employed for obtaining wall decorations both for internal settings, for example on walls and ceiling of building rooms, and for external settings, for example on building facades, on fencing walls, etc.
- the printable support 1 is advantageously employed for obtaining permanent graphical decorations on rough or porous surfaces, e.g. constituted by plaster, masonry, concrete etc.
- the printable support 1 allows obtaining large-size wall decorations, e.g. reproductions of frescoes or paintings in general.
- the printable support 1 for transferable decorations comprises a support layer 2, advantageously constituted by a sheet of double-coated paper, and an intermediate layer 3 fixed on the support layer 2 and comprising at least one water repellent resin.
- the printable support 1 comprises a substantially transparent protection layer 4, which is provided with a first face A removably adhering to the intermediate layer 3, and with a second face B facing towards the opposite direction with respect to the first A and on which a decoration is intended to be printed in a mirror-like manner by means of the deposition on such second face B of at least one ink layer 12.
- the protection layer 4 is susceptible to being transferred, together with the ink layer 12, on a surface to be decorated 13.
- the latter is made to adhere to the surface to be decorated 13 with the side on which the ink layer 12 is deposited, i.e. with the side on which adhesive glue layer 14 is spread, and it is pressed against the surface by pressing on the support layer 2, e.g. with a brush or with a bristle roller.
- the support layer 2 and the intermediate layer 3 are detached from the protection layer 4, which remains attached to the surface in front of the ink layer 12 to protect the latter.
- the protection layer 4 comprises a mixture of acrylic and polyurethane resins 5 with a dry weight percentage of acrylic resins ranging from 80% to 85% and with a dry weight percentage of polyurethane resins ranging from 12% to 16%.
- the acrylic and polyurethane resins of the mixture of acrylic and polyurethane resins 5 are of thermoplastic type.
- the protection layer 4 has an average thickness ranging from 20 ⁇ m to 30 ⁇ m and, at room temperature, exhibits a tensile elongation at break ⁇ R , when subjected to tensile stress, of at least about 45% and is susceptible of remaining intact and maintaining the deformation imparted thereto substantially unaltered when it is made to adhere on the surface to be decorated 13, for extensions of the same protection layer 4 up to approximately 15% with respect to its original size.
- the protection layer 4, therefore, has the capacity to be deformed by being extended up to approximately 15% with respect to its original size without showing structural damage, i.e. remaining intact and maintaining the deformation conferred thereto substantially unaltered when it was made to adhere to the surface to be decorated 13.
- the protection layer 4 is capable of being extended up to approximately 15%, as specified above, without immediate breakage being verified of the same and without detachment and/or crack zones forming over time due to residual tensions present therein.
- the protection layer 4 advantageously has an instantaneous tensile elastic elongation ⁇ E lower than approximately 10%.
- the protection layer 4 of the printable support 1 in accordance with the present invention has substantially viscoelastic behavior.
- the application of a stress on the protection layer 4 therefore gives rise to an instantaneous elastic deformation, which substantially follows the Hooke laws, followed by a viscous deformation, dependent on time, with an anelastic behavior.
- instantaneous tensile elastic elongation it is therefore intended to indicate the immediate elongation that the sample undergoes when subjected to tensile stress, such instantaneous tensile elastic elongation susceptible to being completely and immediately recovered once the external tensile stress acting on the sample itself has terminated.
- the deformation of the protection layer 4 when subjected to an external stress greater than its yield strength ⁇ n , given its substantially viscoelastic behavior, is given by the sum of an elastic deformation, instantaneously reversible and/or over time and a permanent plastic deformation.
- the protection layer 4 in accordance with the present invention is mainly affected by permanent plastic deformations, and by viscous deformations susceptible to being recovered over time.
- the same protection layer 4 is also advantageously affected by relaxation phenomena when maintained in a state of substantially constant deformation. Therefore, when a deformation is imparted to the protection layer 4 that is susceptible to being maintained over time, as occurs for example when the protection layer 4 is made to adhere to the surface to be decorated 13, a relaxation over time is observed of the residual tensions inside the protection layer 4, i.e. a relaxation of the elastic return forces that would induce the protection layer 4 to return to its original size.
- Such relaxation is mainly due to a realignment of the macromolecular chains that constitute the mixture of acrylic and polyurethane resins 5 of the protection layer 4.
- the relaxation of the residual internal tensions hence ensures that the protection layer 4 maintains the deformation conferred thereto substantially unaltered when transferred on a surface to be decorated 13.
- Such characteristics ensure an optimal adhesion of the protection layer 4 to the surface to be decorated 13, since the protection layer 4, during application, is capable of being deformed by easily expanding up to about 15% with respect to its original size and following the roughness of the surface to be decorated 13; in addition, at the end of application, when no more stress is applied, due also to the relaxation of the residual internal tensions, the protection layer 4 remains substantially deformed, without returning to its original form and without undergoing considerable shrinkage.
- the protection layer 4 has a yield strength ⁇ n lower than about 5 MPa, and preferably lower than about 3 MPa, as calculated by means of stress tests carried out on protection layer 4 samples with square form, having 100 mm side and having thickness of 24 ⁇ m, in a 22°C setting and with a relative air humidity equal to 50%.
- the protection layer 4 has a low yield strength ⁇ n value ensures that the protection layer 4 itself is deformed in a substantially permanent manner, even if a small-size stress is applied thereto, such as the pressure exerted on the printable support 1 in order to make it adhere to the surface to be decorated 13.
- the protection layer 4 has an average thickness ranging from 22 and 28 ⁇ m, and still more preferably is approximately 26 ⁇ m, and in particular it has a dry weight of about 23 - 27 g/m 2 .
- the protection layer 4 has a tensile elongation at break ⁇ R of at least about 45%, and, advantageously, it has un tensile strength ⁇ r , at room temperature, of at least approximately 110 g/cm 2 , such that it is capable of being elongated in order to be modeled with respect to the irregularities and roughness of the surface without breaking.
- the tensile elongation at break ⁇ R and the tensile strength ⁇ r of the protection layer 4 were measured by executing stress tests on samples, each constituted by a strip of protection layer 4 with 25 mm width and 200 mm length, which were subjected to tensile stress along their longitudinal extension direction, with a traction speed of 300 mm/min.
- the tests were executed in a 22°C setting and with a relative air humidity equal to 50%.
- the values of tensile strength, yield strength, tensile elongation at break and instantaneous tensile elastic elongation of the protection layer 4 reported herein were measured in the above-specified test conditions. Such values are strongly influenced by the test conditions, i.e. in particular by the deformation speed, by the temperature and by the chemical nature of the surrounding environment, i.e. by the relative air humidity in the test setting, and could therefore be very different from those reported where samples have been tested in different conditions than those specified above.
- the aforesaid mixture of acrylic and polyurethane resins 5 of the protection layer 4 of the printable support 1 is obtained from a compound in liquid phase comprising a first amount of acrylic resins in water emulsion and a second amount of polyurethane resins, these too in water emulsion, blended together.
- such compound in liquid phase is applied by means of spreading on the intermediate layer 3.
- the first amount of acrylic resins in water emulsion and the second amount of polyurethane resins in water emulsion respectively have a dry residue preferably of about 49% and preferably of about 40%.
- the mixture of acrylic and polyurethane resins 5 is obtained from a compound in liquid phase in which the second amount of polyurethane resins in water emulsion is introduced in an amount by weight ranging from 21% to 24% with respect to the amount by weight of the first amount of acrylic resins in water emulsion.
- the second amount of polyurethane resins in water emulsion is introduced into the liquid phase mixture in an amount by weight equal to about 22% with respect to the amount by weight of the first amount of acrylic resins in water emulsion.
- the aforesaid advantageous characteristics of substantially permanent deformation of the protection layer 4 of the printable support 1 are connected to the percentages of acrylic resins and polyurethane resins of the mixture 5 of the protection layer 4 itself according to the present invention.
- the percentage of acrylic resins of the mixture of acrylic and polyurethane resins 5 confers the property of substantially plastic elongation to the protection layer 4, such that it can be adapted to the irregularities of the surface to be decorated 13 without breaking.
- the percentage of polyurethane resins of the mixture of acrylic and polyurethane resins 5 inhibits the elastic behavior of the acrylic resins, preventing the protection layer 4 from undergoing considerable shrinkage after it has been deformed according to the irregularities of the surface to be decorated 13, remaining completely adherent thereto.
- the aforesaid characteristics of the protection layer 4 allow the latter to optimally adhere to the surface to be decorated 13, in particular to coarse or slightly rough surfaces.
- the protection layer 4 has viscoelastic and plastic deformation characteristics such to allow it to be elongated in order to perfectly adhere to the irregularities or pores of rough or coarse surfaces following a light pressure applied on the support layer 2, in this way modeling itself on the surface.
- the protection layer 4 does not shrink in a significant manner, preventing the onset of any problem of adhesion to the surface to be decorated 13, or defects of aesthetic/visual type of the decoration.
- the use of the printable support 1 according to the invention has shown to be particularly advantageous for attaining decorations of large size, which require being divided into multiple contiguous sectors. Such sectors are intended to be printed, each on a corresponding printable support 1 which is applied to the surface to be decorated 13 flanking the printable support 1 on which the contiguous sector is printed, in a manner so as to recompose the decoration on the surface to be decorated 13.
- the use of the printable support 1 ensures a perfect correspondence along the junction edges between two contiguous sectors of the decoration, since after the application of the printable support 1 and removal of the support layer 2, the protection layer 4 is not subjected to any significant shrinkage, hence preventing the formation of cracks between the contiguous sectors of the decoration.
- the percentage of polyurethane resins of the mixture of acrylic and polyurethane resins 5 of the protection layer 4 according to the invention inhibits the residual stickiness of the acrylic resins, conferring zero stickiness to the protection layer 4. In particular, this allows rolling the printable support 1 in a roll without any risk of pasting the second face B of the protection layer 4 with the support layer 2.
- the percentage of polyurethane resins of the mixture of acrylic and polyurethane resins 5 according to the invention confers an opaque aspect to the protection layer 4 (i.e. non-translucent), since it inhibits the translucent characteristics of the acrylic resins, allowing the protection layer 4 to confer to the decoration the opaque characteristic of masonry decorations and not cause annoying light reflections.
- the first amount of acrylic resins in water emulsion mentioned above comprises for about 50% soft acrylic resins in water emulsion and for the remaining 50% hard acrylic resins in water emulsion.
- the protection layer 4 comprising a mixture of acrylic and polyurethane resins 5 obtained from the liquid phase compound as described above, and in particular containing a first amount of acrylic resin in water emulsion comprising for about 50% soft acrylic resins and for the remaining approximately 50% hard acrylic resins, has shown, as reported above, a tensile strength at break of at least approximately 130 g/cm 2 and a tensile elongation at break equal to about 49%.
- the printable support 1 provided with a protection layer 4 obtained with high percentages of hard acrylic resins also resulted difficult to print, due to detachment phenomena between the constituent layers, and in particular between the intermediate layer 3 and the protection layer 4, which can be verified during the printing process.
- the mixture of acrylic and polyurethane resins 5 of the protection layer 4 of the printable support 1 preferably has a dry residue of about 47%.
- the polyurethane resins preferably have a dry residue equal to about 40%, the soft acrylic resins a dry residue equal to about 58% and the hard acrylic resins a dry residue equal to about 40%.
- the mixture of acrylic and polyurethane resins 5 of the protection layer 4 comprises opacifying products, such as in particular colloidal silica, which further facilitates the obtainment of the aforesaid opaque aspect of the decoration.
- the percentage of acrylic resins of the mixture of acrylic and polyurethane resins 5 of the protection layer 4 according to the present invention confers the protection layer 4 with optimal wettability properties, which in particular allow the second face B of the protection layer 4 to absorb the ink layer 12 of the printed decoration, ensuring a long duration of the decoration time, as will be explained in detail below.
- the protection layer 4 exhibits on its second face B, on which the ink layer 12 is deposited, a surface tension of value ranging from 32 to 38 DIN, and preferably from 34 to 36 DIN.
- the above-reported values of the surface tension of the protection layer 4 allow obtaining a contact angle (known the man skilled in the art) that is very small between the ink drops deposited on the second face B of the protection layer 4 and the second face B itself, and hence it confers optimal wettability characteristics to the protection layer 4. This allows the ink to be uniformly distributed on the second face B of the protection layer 4 and in particular to penetrate into the pores of the protection layer 4, without remaining only superficially deposited in drop form on the second face B thereof.
- the ink layer 12 printed on the second face B of the protection layer 4 of the printable support 1 of the present invention is constituted by solvent-based inks, in particular of eco-solvent and mild solvent type.
- Such inks are capable of being distributed in a particularly uniform manner on the protection layer 4, since each drop of such inks is spread on the second face B of the protection layer 4 and penetrates very easily into the pores of the latter.
- the printable support 1 of the present invention is particularly suitable for obtaining decorations on surfaces arranged in outside settings, such as on building facades, etc.
- the mixture of acrylic and polyurethane resins 5 of the protection layer 4 of the printable support 1 according to the invention has optimal workability characteristics in production phase of the printable support 1 itself. More in detail, the mixture of acrylic and polyurethane resins 5 can be easily distributed in a uniform manner on the intermediate layer 3, in particular without the formation of discontinuities on the second face B of the protection layer 4; such discontinuities in decoration printing step would cause the formation of smear lines or the absence of ink.
- the mixture of acrylic and polyurethane resins 5 in production phase of the printable support 1 has specific density and fluidity characteristics, which allow distributing it in a uniform manner on the intermediate layer 3 by employing rotation cycle production appliances and methods per se known to the man skilled in the art.
- the mixture of acrylic and polyurethane resins 5 comprises one or more additives for about 2% of the mixture 5 itself, such as wetting agents, thickeners, surfactants and anti-foaming agents in particular, which further facilitate the workability of the mixture 5, the uniform distribution of the same on the intermediate layer 3 in production step of the printable support 1, and the optimal deposition of the ink layer 12 on the second face B of the protection layer 4.
- additives for about 2% of the mixture 5 itself such as wetting agents, thickeners, surfactants and anti-foaming agents in particular, which further facilitate the workability of the mixture 5, the uniform distribution of the same on the intermediate layer 3 in production step of the printable support 1, and the optimal deposition of the ink layer 12 on the second face B of the protection layer 4.
- the mixture of acrylic and polyurethane resins 5 advantageously comprises inert charges for about 2% of the mixture 5 itself, which have a filler function and contribute to conferring a surface finish to the protection layer 4 that is adapted to receive the print ink.
- the protection layer 4 of the printable support 1 of the present invention comprises a primer layer 8, which defines the second face B of the protection layer 4 on which the decoration to be transferred is intended to be printed, in order to further facilitate the deposition of the ink layer 12 on the second face B of the protection layer 4.
- primer layer 8 is composed by opacifiers, preferably silica, and by acrylic binders in water dispersion, in order to facilitate the absorption of the ink layer 12 by the protection layer 4.
- the primer layer 8 is placed on the mixture of acrylic and polyurethane resins 5, and has a thickness of about 1 ⁇ m and preferably a dry weight of about 0.60 g/m 2 .
- the primer layer 8 allows the protection layer 4 to quickly absorb the ink layer 12, speeding up the drying thereof In particular, this allows rolling the printable support 1 into a roll as it exits from the printer, without having to wait long times for the drying of the ink layer 12.
- the primer layer 8 carries out the function of anti-adherent, in order to prevent the second face B of the protection layer 4 from attaching to the support layer 2, when the printable support 1 is wound as a roll, both before and after the printing of the ink layer 12 on the second face B of the protection layer 4 itself.
- the intermediate layer 3 adheres to the protection layer 4 with a detachment strength (necessary for delaminating the support layer 2 and the intermediate layer 3 from the protection layer 4) of value ranging from 7.2 to 8.8 g/cm 2 .
- a detachment strength (necessary for delaminating the support layer 2 and the intermediate layer 3 from the protection layer 4) of value ranging from 7.2 to 8.8 g/cm 2 .
- the values of the aforesaid detachment strength were calculated by executing trial tests in accordance with the law FINAT No. 1, known by the man skilled in the art. Such tests were in particular executed on samples each constituted by a strip of the printable support 1 that is 25 mm wide and 200 mm long.
- the tests detected a value of the detachment strength of about 8 grams/cm 2 .
- the arrangement of the intermediate layer 3 of the printable support 1 with the aforesaid detachment strength advantageously allows detaching the support layer 2 and the intermediate layer 3 itself, after the printable support 1 was attached on the surface to be decorated 13 by means the adhesive glue layer 14 applied on the ink layer 12, without the protection layer 4 tearing or without it deforming, creating wrinkles.
- such characteristic has proven to be especially advantageous for obtaining decorations on particularly porous, coarse surfaces, in which the adhesive glue layer 14 might not be attached in a fully uniform manner on the surface to be decorated 13.
- the value of the detachment strength of the intermediate layer 3 according to the invention is sufficiently small to allow detaching the support layer 2 from the protection layer 4 without causing elongation or deformation of the zones of the protection layer 4 at which the adhesive glue layer 14 is not perfectly attached to the surface to be decorated 13.
- the detachment strength between the intermediate layer 3 and the protection layer 4 prevents the latter from detaching from the intermediate layer 3 (and hence also from the support layer 2) during the pulling of the printable support 1 inside the printer in order to execute the printing of the decoration on the printable support 1. More in detail, the aforesaid values of the detachment strength are greater than the traction that the drive rollers of the printer exert on the support layer 2 or on the protection layer 4 in order to drive the printable support 1 inside the printer itself.
- the water repellent resin of the intermediate layer 3 comprises a silicone resin, which is control release treated to allow the first face A of the protection layer 4 to removably adhere to the intermediate layer 3 with the aforesaid values of the detachment strength.
- the silicone resin of the intermediate layer 3 has a grammage of about 2 g/m 2 .
- inert charges are dispersed, such as colloidal silica in particular, in order to obtain an opaque visual effect of the protection layer 4 and hence of the decoration printed thereon.
- the protection layer 4 appears with a non-translucent, in particular slightly coarse aspect to the observer; this when the printable support applied to the surface to be decorated 13 and the support layer 2 is removed. At the same time, transparency characteristics are maintained such to allow the observer to see the decoration without any optimal deformation or covering.
- the presence of inert charges in the silicone resin of the intermediate layer 3 creates micro-irregularities on the face of the latter adherent to the first face A of the protection layer 4.
- the latter is deformed according to such micro-irregularities, creating corresponding micro-irregularities on its first face A, which is intended to remain facing outward, after the support layer 2 and the intermediate layer 3 were removed from the protection layer 4 attached to the surface to be decorated 13.
- the micro-irregularities on the first face A of the protection layer 4 prevent the light that hits such first face A from being reflected in a mirror-like manner, creating shade and light microzones that produce an opaque appearance of the decoration.
- the printable support 1 allows transferring decorations on rough surfaces, such as masonry walls, maintaining visual uniformity of opacity between the decorated surface zones and the non-decorated surface zones.
- colloidal silica as inert charge allows advantageously obtaining a uniform distribution of the latter inside the silicone resin of the intermediate layer 3, producing the aforesaid opaque appearance of the decoration without covering the ink layer 12 fixed on the second face B of the protection layer 4 of the printable support 1 applied to the surface to be decorated 13.
- the intermediate layer 3 consists of one or more fluorinated products, for example FCH.
- the support layer 2 (sheet of double-coated paper) of the printable support 1 is provided with a third face C on which the intermediate layer 3 is fixed, and a fourth face D facing towards the opposite direction with respect to the third face C.
- the printable support for transferable decorations comprises a layer of water repellent-oil repellent material 11 provided for coating the fourth face D of the support layer 2.
- the aforesaid layer of water repellent-oil repellent material 11 ensures that the ink layer 12 fixed on the second face B of the protection layer 4 does not adhere to the fourth face D of the support layer 2 when the printable support 1 is rolled in a roll, and that such ink layer 12 is not detached from the second face B when the printable support 1 is unrolled.
- the layer of water repellent-oil repellent material 11 comprises one or more fluorinated products, such as FCH.
- fluorinated products such as FCH.
- the use of fluorinated products for obtaining the layer of water repellent-oil repellent material 11 ensures, during the printing of the decoration on the protection layer 4, that the printable support 1 does not slide on the drive rolls of the printer, since the layer of water repellent-oil repellent material 11 develops sufficiently high friction with the drive rollers of the printer.
- the support layer 2 is advantageously constituted by the sheet of double-coated paper
- the water repellent and oil repellent material layer 11 makes the double-coated sheet more resistant to external agents, in particular during the transport and storage operations.
- the tested protection layer 4 in particular, comprises a mixture of acrylic and polyurethane resins 5 with a dry weight percentage of acrylic resins equal to about 82%, with a dry weight percentage of polyurethane resins equal to about 14% and with a dry weight percentage of additives and inert charges equal to about 4%.
- the mixture of acrylic and polyurethane resins 5 of the protection layer 4 was in particular obtained from a compound in liquid phase comprising a first amount of acrylic resins in water emulsion, comprising about 50% of soft acrylic resins and about 50% of hard acrylic resins, and a second amount of polyurethane resins.
- each sample was subjected to tensile stress up to reaching a preestablished elongation value. Once such elongation value was reached, each sample was maintained under traction with constant deformation for a time range equal to 15 seconds; at the end of such time interval, the stress was removed.
- the residual lengthening is inversely proportional to the total induced lengthening and decreases with the increase of the latter.
- Such characteristic is particularly advantageous for the type of application to which the protection layer 4 is intended, for a printable support according to the present invention.
- the protection layer 4 when it is applied on the wall to be decorated, is subjected to small deformations.
- small deformations in particular have a significant substantially permanent component of the total deformation, thus allowing the protection layer 4 to be modeled in accordance with the surface of the wall to be decorated, without considerable shrinkage occurring.
- the finding thus conceived therefore achieves the preset objects.
Landscapes
- Laminated Bodies (AREA)
- Decoration By Transfer Pictures (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000361A ITPD20110361A1 (it) | 2011-11-18 | 2011-11-18 | Supporto stampabile per decorazioni trasferibili |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2594410A1 true EP2594410A1 (fr) | 2013-05-22 |
EP2594410B1 EP2594410B1 (fr) | 2014-06-04 |
Family
ID=45491699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120193021 Active EP2594410B1 (fr) | 2011-11-18 | 2012-11-16 | Support imprimable de décorations transférables |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2594410B1 (fr) |
IT (1) | ITPD20110361A1 (fr) |
RU (1) | RU2012148771A (fr) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3007829A (en) | 1959-02-09 | 1961-11-07 | Meyercord Co | Vitreous decalcomania |
GB1552232A (en) | 1976-05-12 | 1979-09-12 | Watts B G | Transfers |
US4228211A (en) | 1978-09-22 | 1980-10-14 | Grafische Onderneming Mago B.V. | Dry transfer material |
US4322467A (en) | 1979-09-13 | 1982-03-30 | Corning Glass Works | Decalcomania |
EP0266094A1 (fr) * | 1986-10-30 | 1988-05-04 | Minnesota Mining And Manufacturing Company | Décalcomanie pour transfert à sec, dont les portions non voulues se détachent automatiquement |
US5702790A (en) * | 1991-01-02 | 1997-12-30 | Liebe, Jr.; Robert James | Water-added evaporation process for making thin plastic lettering webs |
US5968624A (en) * | 1991-01-02 | 1999-10-19 | Liebe, Jr.; Robert James | Multi-layered plastic lettering web and method of producing |
WO2010119471A2 (fr) | 2009-04-14 | 2010-10-21 | Danilo Todeschini | Substrat imprimable pour le transfert à froid et sec de décorations, procédé pour sa production, et utilisation sur des surfaces à décorer |
-
2011
- 2011-11-18 IT IT000361A patent/ITPD20110361A1/it unknown
-
2012
- 2012-11-16 EP EP20120193021 patent/EP2594410B1/fr active Active
- 2012-11-16 RU RU2012148771/05A patent/RU2012148771A/ru not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3007829A (en) | 1959-02-09 | 1961-11-07 | Meyercord Co | Vitreous decalcomania |
GB1552232A (en) | 1976-05-12 | 1979-09-12 | Watts B G | Transfers |
US4228211A (en) | 1978-09-22 | 1980-10-14 | Grafische Onderneming Mago B.V. | Dry transfer material |
US4322467A (en) | 1979-09-13 | 1982-03-30 | Corning Glass Works | Decalcomania |
EP0266094A1 (fr) * | 1986-10-30 | 1988-05-04 | Minnesota Mining And Manufacturing Company | Décalcomanie pour transfert à sec, dont les portions non voulues se détachent automatiquement |
US5702790A (en) * | 1991-01-02 | 1997-12-30 | Liebe, Jr.; Robert James | Water-added evaporation process for making thin plastic lettering webs |
US5968624A (en) * | 1991-01-02 | 1999-10-19 | Liebe, Jr.; Robert James | Multi-layered plastic lettering web and method of producing |
WO2010119471A2 (fr) | 2009-04-14 | 2010-10-21 | Danilo Todeschini | Substrat imprimable pour le transfert à froid et sec de décorations, procédé pour sa production, et utilisation sur des surfaces à décorer |
Also Published As
Publication number | Publication date |
---|---|
RU2012148771A (ru) | 2014-05-27 |
ITPD20110361A1 (it) | 2013-05-19 |
EP2594410B1 (fr) | 2014-06-04 |
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