MXPA96004286A - Decorative sheet that has texture of matiz martill - Google Patents

Abstract

This invention describes a decorative sheet having a hammered matrix texture and the method used to obtain such a hammered tone texture. A hammered tone composition is agitated, applied to a decorative sheet by using a controlled supply medium in sufficient thickness, and after drying at a temperature and for a sufficient time to provide the hammered matrix texture on the decorating sheet

Description

DECORATIVE SHEET THAT HAVE HAMMERED TEXTURE FIELD OF THE INVENTION The present invention relates to a decorative sheet having a "hammered hue" texture. The hammered shading texture has been used in various fields, because it provides a nice finishing effect even when the bottom surface is rough to some extent.

BACKGROUND OF THE INVENTION Usually, decorative sheets have been manufactured by using the following processes: (a) a resin film is formed on a paper surface by coating with a solution of polyvinyl chloride resin on the surface of the paper, (b) a sheet of vinyl chloride as a support is subjected to printing, etching or other processing, (c) a foaming agent is used to produce a three-dimensional appearance, or (d) flake-like flake or granule-like flakes are sprayed and adhered randomly to provide a stereoscopic appearance. See, for example, Inside Encyclopedia published by the REF: 23074 Trade Association for Wall-Coveririg Materials of Tokyo, Japan in 1988 on pages 697 and 698. If you try to produce a stereoscopic texture called "hammered hue" (ie, if hammered randomly to form a three-dimensional or other stereoscopic appearance) by the printing or engraving process as described above, a poor stereoscopic appearance is obtained because the same :,. pattern appears repeatedly according to the circumference of the printing roller or engraving roller. A random texture is not formed. If a foaming agent is used, the expression of the stereoscopic appearance is reduced. If the decorative sheet adheres by using shavings or chips adhered, the formation of chip flakes is problematic. Usually, in order to obtain a hammered hue texture, silicone resin containing paint is used. Japanese Unexamined Patent Publication (Kokai) No. 63-91168 discloses a coating composition containing a silicone resin powder to form a hammered hue texture to be formed on a painted surface. Such a coating composition causes a hammered hue texture to appear because the silicone resin repels the components of the coating composition on the surface of the coating composition due to the low surface tension of the silicone resin. This is a phenomenon of non-existence. However, since the silicone resin has low surface attention and poor compatibility with other components of a coating composition, it must be constantly immersed in a solvent. Therefore, it has been difficult to coat a silicone resin by a method substantially different from spray coating. However, the application of spray coating has involved the following problems or restrictions: (a) The coarse application of a uniform coating is difficult. (b) When a spray coating is carried out in a vertical direction, there arises the problem of what is referred to as "shifting" of the coating, which occurs frequently. (c) Since the spray capacity may be limited, it is difficult to spray-coat over a large area at a time without having to re-fill or use a new spray can. (d) In. The spray coating requires a very precise adjustment of the viscosity to avoid clogging the nozzle area. A diluent or gas injection is essential for the use of the spray. (e) After coating, the coated object should be dried for about 6 hours without heat or under strict drying conditions of about 180 ° C and about 20 minutes if the coating is crosslinked. Accordingly, it has been difficult to use the conventional silicone resin coating composition as a decorative film, especially as a decorative film which can be stored in a roll or roller.

BRIEF DESCRIPTION OF THE INVENTION One aspect of the present invention recognizes the following preferred features in a decorative sheet having a hammered hue texture, especially a large sheet having a hammered hue texture that can be stored in roll form until its use: (a) forming a hammered hue texture that exhibits stereoscopic appearance free from repetition of the same pattern, (b) easily forms a decorative layer having a uniform, large area with a hammered hue texture, (c) a very precise viscosity adjustment is unnecessary , since neither a thinner nor the injection of gas are necessary, and the cost of production is low, (d) the drying temperature for the hammered shading coating composition is lower than that used for spraying techniques. Another aspect of the invention relates to a decorative sheet having a hammered hue texture, containing a backing sheet, a sizing layer, a decorative layer, the decorative layer having a surface roughness of 6 μm or greater. The decorative sheet has a hammered shade texture of the present invention and comprises a backing sheet, a primer layer on the backing sheet, and a decorative layer on the backing layer, the decorative layer is formed by applying the decorative layer in the form of a hammered shade coating composition using a controlled means of supplying the composition to the primer layer to a sufficient thickness after mixing with sufficient agitation and subsequently drying for a sufficient time and temperatures in order to form a surface which has a surface roughness Ra of 6 μm. The "surface roughness", also known as Ra, is a measurement standardized by JIS B-0601-1994, as published by the Japanese Standards Association of Tokyo, Japan (Association of Japanese Standards of Tokyo, Japan). If the surface roughness or Ra is less than about 6 μm, it is not possible to obtain a desired satisfactory rough appearance for a hammered hue texture. In addition, there is a lack of uniformity of the hammered hue texture. For texture stability, a surface roughness or Ra of at least about 7.5 μm is preferred. The hammered shading coating composition used in the present invention produces a hammered shade texture because the silicone particles that make up the coating composition, which are finely dispersed in the coating composition, repel other ingredients of the composition of the composition. coating. A pleasant pattern of coating depends on the resistant conditions of it. Therefore, the mixing conditions for the ingredients of the coating composition are important, and when the ingredients are mixed too much or too little, a hammered hue texture is not obtained.

However, no method was known to obtain the mixing-stirring conditions in which the mixing carried out is too little or too little. The present invention provides a method for solving the mixing-stirring conditions to generate a decorative layer having a nice hammered shade texture. The present invention provides a method in which the ingredients of the hammered shading composition are mixed under specific conditions, coated on the desired surface and dried under specific conditions, in order to produce a pleasant hammered shade texture by roughness of the surface or Ra. The method for manufacturing the decorative sheet having a hammered shade texture comprises the steps of shaking a hammered shade coating composition; applying the hammered shaken tint composition to the backing sheet by using a controlled means of delivering the composition to a sufficient thickness to provide a stereoscopic appearance; and drying the hammered tint composition applied for a sufficient time and temperatures in order to form a surface on the support sheet having a surface roughness Ra of 6 μm or greater.

A standardized test can be used to determine the success of the method of the present invention to obtain the desired surface roughness or Ra. By using this test, it has been found that when the ingredients of the hammered shading coating composition, mixed under agitation under specific conditions, described in the following, are used as a coating on a surface of a floating glass plate standardized by JIS R-3202-1985 (Japanese Standards Association of Tokyo, Japan), (Association of Japanese Standards of Tokyo, Japan), up to a dry thickness that varies from 50 to 80 μm and dried at a temperature with a specified interval and for a period of time within the specified range, the surface roughness Ra standardized by JIS B -0601-1994 (Japanese Standards Association of Tokyo, Japan) (Japanese Standards Association of Tokyo, Japan), becomes 6 μm or greater. In practice, then, the amount of agitation, the controlled means of supplying the composition to the desired surface, the thickness of the coating and the temperature and drying time of the coating composition can be used to determine the roughness of the surface. or Ra and the resulting desired hammered tint texture obtained.

"Controlled supply means" means that the method of applying the composition to the surface is not random or variable, such as the previously used spray techniques to form a hammered hue texture. Non-limiting examples of controlled supply means include knife coaters, roller coaters, die coaters, engraved coaters or screen printing. Therefore, the present invention provides a decorative sheet having a hammered shade texture, comprising a backing sheet, a primer layer on the backing sheet, and a decorative layer over the primer layer, the decorative layer being form by application of the decorative layer in the form of a hammered shade coating composition by using means for controlling the supply of the composition to the primer layer to a sufficient thickness after mixing with sufficient agitation and subsequently drying for a time sufficient and at a sufficient temperature in order to form a surface having a surface roughness Ra of 6 μm or greater. The advantages obtained according to the present invention are the following: (1) A texture of hammered hue of stereoscopic appearance free of repetition of the same pattern which can be formed on a decorative sheet, especially in the form of a large leaf. (2) A decorative sheet having a smooth hammered texture may be produced in one area large. (3) Due to the above effects, a large area can be enhanced with a decorative sheet that has a hammered hue texture. (4) Unlike spray coating or previously used, it is unnecessary to dilute a solvent in the process of the present invention. Additional chemicals are avoided and production costs are reduced. (5) The drying time for the coating composition can be shortened. L5 (6) Since the product of the present invention is formed as a sheet, it is likely that the product will not be contaminated in the manner in which it rejects the hammered hue texture of the decorative sheet. (7) Since the product of the present invention is formed in sheet form, the articles prepared from the decorative sheet are not affected by the processing conditions used to form the decorative sheet. You can get a good final appearance.

The additional features and advantages of the invention are described with respect to the embodiments of the invention, in relation to the drawing. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a graph showing the relationship between the agitation time and the surface roughness or Ra, at a predetermined number of revolutions. MODALITIES OF THE INVENTION The hammered hue texture mentioned herein is a pleasant stereoscopic pattern that forms a rough surface appearance made of crater-shaped concave parts in contact with each other, formed so that bubbles independent of spherical or spheroidal bubbles they have a size that varies from 0.1 to mm, preferably from 0.5 to 2 mm, or independently bubbles are formed by the connection of part of the spherical or spheroidal bubbles above, evenly distributed in a film, which break to form concave shapes on the surface that then solidify. The decorative sheet having a hammered shade texture according to the present invention generally comprises a backing sheet, an inclination layer provided thereon, a hammered shade coating composition provided thereon to form a decorative layer. which has a hammered hue texture. The primer layer can also serve as a backing sheet. In addition, on the reverse side of the support sheet, a layer of pressure-sensitive or hot-melt adhesive or heat-adhering adhesive can be provided with a releasable sheet (a treated paper is generally used for release) provided below it. The decorative sheet of the present invention in this construction can have a releasable sheet which can be peeled off, and a layer of adhesive is adhered to an object to be coated, which facilitates the application at the work site of the sheet of the present invention. In addition, a protective layer may optionally be provided on the decorative layer for the purpose of improving the powder resistance and in some way improving the durability. The support sheet provides mechanical support at the time of production, transportation and storage of the decorative sheet of the present invention. Non-limiting examples of a backing sheet useful in the present invention include paper, and polymeric sheets made of vinyl chloride resin, polyether, polypropylene, acrylic resin, methacrylic resin, urethane resin or a mixture thereof. Among them, a vinyl chloride resin sheet is preferred. The thickness of the sheet is within the range of 20 and 200 μm, preferably between 50 and 150 μm, and more preferably between 70 and 100 μm. The primer layer joins the backing sheet with the hammered shade decorative layer. Non-limiting examples of primer layers include vinyl chloride resins, vinyl acetate resin, rubber, epoxy resin and urethane resin. Among these, vinyl acetate resin is preferable. The thickness of this primer layer is within the range between 0.1 to 50 μm, preferably between 5 and 40 μm, and more preferably between 10 and 30 μm. If necessary, this primer can have most of the functions of the support sheet. For example, when the backing sheet is a vinyl chloride resin, and the backing layer is a vinyl acetate resin, the backing layer is thicker so that it has most of the backing function. Even in such a case, the vinyl chloride resin plays an important role in imparting flexibility to the decorative sheet as a whole.

The hammered shade coating composition generally contains silicone particles, a resin component, metal flakes, a solvent and pigments. Non-limiting examples of silicone particles include the high molecular weight polydimethylsiloxane particles. Non-limiting examples of the resin component include urethane resins, acrylic resin, polyester resin and melamine resin. Among these, the urethane resin is preferred. Non-limiting examples of the metal flakes mentioned in the foregoing include the powder of a thin sheet of aluminum and pearl powder (mica pieces coated with titanium). Non-limiting examples of the solvent include ethanol, isopropanol, n-propanol, n-butanol, isobutanol, t-butanol, cycloexane, toluene, methyl ethyl ketone, methyl isobutyl ketone, and the like. Non-limiting examples of the pigment include carbon black, titanium oxide, red iron oxide, ocher (yellow iron oxide), phthalocyanine blue, phthalocyanine green, quinacridone yellow pigment, precipitated barium sulfate, talc, calcium carbonate, clay, silica and the like. The hammered shading coating compositions useful in the present invention are commercially available as, for example, "ALEXIT-Hammerschlaglack ™ (produced by MANKIE ICZ GEBR. &; CO., Germany), previously useful for spraying as described in the background of the invention, before. The hammered shading coating compositions used in prior processes utilize large size silicone particles, and require prolonged and hot drying conditions for the purpose of causing a crosslinking reaction. On the contrary, in the process of the present invention, because the silicone particles are mechanically dispersed and therefore become finer or smaller particles and are dispersed uniformly, the drying conditions (temperature and time) can be become less severe. For example, drying at a temperature of 120 CC for a period of time ranging from 2 to 7 minutes is sufficient. The thickness of the coating composition mentioned herein means the thickness of the thickest portion of the coating composition. The thickness of the coating composition is within the range between 30 and 150 μm, preferably between 40 and 100 μm, and more preferably between 50 and 80 μm. When the thickness is less than 30 μm, the hammered hue texture becomes poor in its stereoscopic appearance. On the other hand, when the thickness exceeds 150 μm, the uniformity of the pattern is damaged. The thickness of the coating composition more preferably is about 60 μm in consideration of the durability of the film and the stability of the pleasing pattern. Because the surface pattern of the hammered hue texture is irregular, the thickness of the coating composition needs to be thick enough to avoid drying in a decorative layer that is too thin to provide stability to a pleasing pattern. This can occur when the thickness of the coating composition is less than about 30 μm and coating portions are about 10-20 μm. On the other hand, when the coating composition is applied and is too thick, it is feasible for a bubble to bind to the surrounding bubbles, which results in an unstable appearance when it dries. "The stability of a pleasant pattern" means that the decorative layer does not have a very thin or too thick coating thickness, and avoids the instability of the bubbles or instability due to lack of thickness. The thickness of the resulting surface of the decorative layer is at least 6 μm or greater, based on the roughness of the surface or Ra of 6 μm standardized by JIS B-0601. The thickness of the surface is preferably set well above 6 μm, in order that a texture of hammered hue sufficiently pleasant on the decorative layer of a sufficient, durable and substantially uniform thickness can be obtained. For example, the thickness of the decorative layer may vary in the same thickness as the thickness of the coating composition described above, and preferably from about 50 to about 80 μm, and preferably to about 60 μm. With a decorative layer having a thickness in this range, the surface roughness, preferably, is greater than 7 μm or more. For the layer of the pressure sensitive adhesive or of the heat-melting or heat-adhering adhesive, layers of acrylic resin, silicone resin, vinyl chloride resin, urethane rubber resin can be used. The thickness of this layer is within the range between 10 and 100 μm, preferably between 15 and 75 μm, and more preferably between 20 and 50 μm. The decorative sheet having a hammered hue texture can be produced in such a way that a surface roughness of at least 6 μm is predictably obtained. As described in the foregoing, the tests involve certain mixing conditions suitable for use in the decorative sheet of the present invention when mixing the composition under those conditions and then coating with the hammered shade coating composition on the surface of a glass Floating plate standardized by JIS R-3202 at a dry thickness ranging from 50 to 80 μm, and subsequently drying at a temperature ranging from 120 to 180 ° C for a period of time ranging from 12 to 15 minutes, the surface roughness Ra standardized by JIS B-0601 becomes 6 μm or greater. Figure 1 shows the relationship found between the mixing conditions and the surface roughness by using the test described above. When using two different mixing revolutions per minute, the variation of the final surface roughness compared to the stirring time is shown. When the hammered shade coating compositions are mixed under these conditions, the resulting mixture is applied over the primer layer provided on the backing sheet to a dry thickness ranging from 30 to 150 μm, and dried at a varying temperature. from 120 to 200 ° C and for a time ranging between approximately l and 15 minutes. In order to manufacture the decorative sheets according to the present invention, the backing sheet is coated with a priming layer according to the techniques known to those skilled in the art, Subsequently, the ingredients of the coating composition are mixed. under stirring conditions shown in Figure 1, using a mixer (for example a ball mill, a disperser, a microfluidizer and the like), and the obtained mixture is used as a coating by the use of a coating medium such as a device of knife coating, a roller coating, a die coating, an engraving or screen coating, or other coating means that can provide a controlled means of supplying the composition in order to produce a substantially uniform thickness. the coated coating composition is dried at a temperature ranging from 120 to 200 C. The drying is carried out between approximately 1 and 15 minutes to avoid, on the one hand, that the coating composition becomes sticky as the sheet is rolled up for storage. On the other hand, if the coating composition is dried at a high temperature for a long time, the decorative sheet cracks or some of the ingredients of the decorative sheet are burned. Therefore, the drying is carried out under conditions of temperature and time such that they do not cause such problems. In addition, drying for a longer period of 15 minutes requires a large-scale equipment, for even a low temperature drying effort, so that the economic benefits of the present invention over the prior art processes are they lose The hammered shade coating composition produces a hammered shade texture because the silicone particles constituting the coating composition, which are finely dispersed in the coating composition, repel other ingredients of the coating composition. A pleasing pattern of the hammered shading coating composition depends on the strength conditions thereof. Therefore, the mixing conditions for the ingredients are important, and when the ingredients are mixed too much or too little, a nice hammered shade texture is not obtained. The application of the test described above and the determination of the appropriate mixing conditions, coating thickness and drying time and temperature provide a predictable surface roughness and ensure a nice hammered shade texture for a decorative layer on the decorative sheet .

The pressure-sensitive adhesive layer and the release sheet layer to be provided, if necessary, can be provided by a customary method. In the following examples, additional applications of the embodiments of the invention can be found.

EXAMPLES The following working examples do not limit the scope of the present invention.

EXAMPLES 1 TO 13 On a paper coated with release material with a thickness of 150 μm, a vinyl chloride resin is coated with a knife coating equipment, so that a support film with a thickness of 70 μm is formed. On this film formed in this way, a vinyl acetate resin is applied as a coating, as a primer layer, so as to form a layer with a thickness of 20 μm. On the vinyl acetate primer resin layer thus formed, a hammered shade coating composition ("ALEXIT-Hammerschlaglack" MR 2: 1, is applied as a knife coating (with a spacing of 170-320 μm). produced by MANKIEWICZ GEBR. &CO., Ha burg, Germany), after mixing with stirring for various conditions as set forth in table 1, are dried for 10 minutes at a temperature of 120 ° C, so as to produce a decorative leaf. The dry thickness of the hammered shade coating composition is found to be 60 μm. The mixing under previous stirring is carried out under various conditions as set out in table 1, by a Cowles mixer having a circular blade, with a diameter of 20 cm, after 60 kg the hammered hue coating composition has been introduced to a 180-liter drum can. With respect to the decorative sheets obtained, they undergo visual evaluations regarding their appearance in terms of the hammered shade texture. The results of the evaluation, the roughness of the surface of the decorative layers of the decorative sheets obtained, the particle sizes of the silicone particles used, the degrees of dispersion of the silicone particles obtained and the drying conditions of the sheets Decorative patterns are set forth in Table 1. Furthermore, a graph showing the relationship between the agitation time and the surface roughness Ra at a predetermined number of revolutions is shown in Figure 1. The evaluation results for the appearance of hammered hue are expressed by the following evaluation classification: VG: very good G: good F: poor appearance NG: no appearance whatsoever Silicon particles are observed microscopically, and the particle sizes are They express by the following standards: L: 300 μm or greater M: 200 μm or greater and less than 300 μm S: less than 200 μm The dispersion grades of the silicone particles are expressed by the following standards, based on the number of particles in an area of 1 cm2, which are obtained by microscopic observation of the particles. SC: less than 5 MD: 5 or more, and less than 10 HM: 10 or more The drying conditions are expressed by the following classification, based on the results obtained by superficial touch with the fingers: VG: completely free of stickiness surface G: slightly sticky surface NG: completely sticky surface Table 1 Example Number of Ra Time Diameter Degree of Condition AparienNo. Revolutions Agitation (μm) of dry particulate dispersion (rpm) (minutes) of silicone particles 1 500 5 1.0 L CS NG NG 2 500 10 5.5 L CS NG NG 3 500 20 9.0 M HM G VG 4 500 30 7.0 M HM G • VG 500 40 6.9 S HM G G 6 500 50 6.7 S HM G G 7 500 60 5.9 S MD G NG 8 500 70 4.0 S CS G NG 9 1000 5 6.5 M HM G G 1000 10 8.4 M HM G VG 11 1000 20 7.8 S HM G VG 12 1000 30 7.4 S HM G VG 13 1000 50 5.1 S CS G NG Table 1 and Figure 1 show that with coating thicknesses, drying temperature and drying time which remain constant, a stirring time between 10 and 50 minutes at 500 revolutions per minute and below 50 minutes at 1000 revolutions per minute. minute, produce surface roughness measurements greater than 6 μm.

EXAMPLES 14 TO 23 In a primer material provided on a backing sheet produced in the same manner as in example 1, they are applied with knife coating with coating positions prepared under condition No. 3 confirmed in example 1 (500 rpm, 20 minutes ) at various thicknesses as set forth in Table 2, respectively, in the coating compositions thus coated at various thicknesses they are dried for 5 minutes at a temperature of 150 ° C, respectively, and the hammered hue appearances thereof are evaluated visually, so that you have the thickness that imparts good appearance. The results obtained are established in Table 2. The evaluations of the appearances of the hammered hue are expressed by the following classification: VG: very good G: good F: poor appearance NG: no appearance, Table 2 Example] Thickness Thickness Appearance No. supplied dry (μm) of the hue in the hammered space of the blade (μm) 14 120 20 NG 15 140 30 F 16 160 40 F 17 180 50 G 18 200 60 VG 19 220 70 G 20 240 80 G 21 280 100 F 22 350 150 F 23 400 200 NG With mixing conditions, drying temperature and drying time which remain constant, table 2 shows that dry thicknesses varying more than 20 and less than 20-0 μm, and preferably between about 30 and about 150 μm result in a preferred surface roughness.

EXAMPLES 24 TO 38 In a primer material provided on a backing sheet produced in the same manner as in Example 1, compositions (with a free space of 200 μm) prepared under condition No. 3, confirmed in the example, are coated with knife coating. 1 (500 rpm, 20 minutes) to a thickness of 60 μm, and the coating compositions thus coated are dried for various times at various temperatures, respectively, and the drying conditions are examined by surface touch with the fingers, and are evaluated by the next standard. G: not sticky and without fracture F: slightly sticky or with some fractures NG: sticky • Table 3 'Drying conditions Experiment Temperature Time Evaluation No. (° C) (minute 1 90 3 NG 2 90 5 NG 3 120 3 F 4 120 5 F 5 140 5 F 6 140 10 G 7 140 15 G 8 150 3 F 9 150 5 G 10 150 7 G 11 150 10 F 12 180 3 G 13 180 5 G 14 180 7 F 15 200 1 F With mixing conditions and coating thickness which remain constant, Table 3 shows how the variation in drying temperature and drying time affects the surface roughness resulting from the hammered shade texture.

By using a temperature greater than 90 ° C, a decorative layer having an acceptable surface is provided. Although embodiments of the invention have been described, the invention is not limited thereto. For an appreciation of the scope of the present invention, follow claims: It is noted that in relation to this date, the best method known by the applicant to implement the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, property is claimed as contained in the following:

Claims (12)

1. A decorative sheet having hammered shade texture, characterized in that it comprises a support sheet, a primer layer on the support sheet, and a decorative layer on the primer layer, the decorative layer is formed by applying the decorative layer in the form of a hammered shade coating composition by using a controlled means of supplying the composition to the primer layer, to a sufficient thickness after mixing with sufficient agitation and subsequently drying for a sufficient time at a sufficient temperature for the purpose of forming a surface having a surface roughness Ra of 6 μm or greater.

2. The decorative sheet according to claim 1, characterized in that the thickness of the decorative layer is within the range between 30 and 150 μm.

3. The decorative sheet according to claim 1, characterized in that the thickness of the sheet of the support is within the range between 20 and 200 μm, and the thickness of the primer layer is within the range between 0.1 and 100 μm.

4. The decorative sheet according to claim 1, characterized in that the decorative layer is constituted by a coating composition containing particles of silicone and aluminum powder.

5. The decorative sheet having a hammered hue texture, according to claim 1, characterized in that the support sheet consists essentially of a vinyl chloride resin, the primer layer consists essentially of a vinyl acetate resin, and the Decorative sheet consists essentially of a urethane resin.

6. The decorative sheet having a hammered shade texture, according to claim 1, characterized in that it comprises a layer of pressure-sensitive adhesive on the opposite side of the support sheet.

7. A method for manufacturing a decorative sheet having a hammered shade texture, comprising the steps of: (a) shaking - the hammered shade coating composition; (b) applying the hammered shaken tint composition to the backing sheet by using a controlled means of delivering the composition to a sufficient thickness to provide a stereoscopic appearance; and (c) drying the hammered hue composition applied for a time at a temperature sufficient to form a surface on the backing sheet having a surface roughness Ra of 6 μm or greater.

8. The method according to claim 7, characterized in that it additionally comprises the step of placing a primer on the support sheet with a primer layer before step (b), and wherein the application of the stage (b) ) applies the hammered shade coating composition to the primer layer.

9. The method according to claim 8, characterized in that the hammered shade coating composition is applied in a thickness ranging from about 30 to about 150 μm.

10. The method according to claim 8, characterized in that the drying step is carried out at a temperature ranging from 120 ° to 200 ° C and for a time ranging between about 1 and 15 minutes.

11. The method according to claim 8, characterized in that the stirring step (a) comprises a stirring time between 10 and 50 minutes at 500 revolutions per minute, or less than 50 minutes at 1000 revolutions per minute.

12. The method according to claim 8, characterized in that the controlled means of supplying the composition comprises a knife coating system, roller coating, die coating, a coating with etching or screen printing.