STAMPING FOIL USABLE IN ECO-FRIENDLY PAPER PACKING MATERIAL RECYCLABLE THROUGH SEPARATION OF TRANSFER FILM AND PAPER

Abstract

The purpose of the present invention is to improve surface scratch problems occurring in the manufacturing process and handling of an adherend on which stamping foil is applied, prevent a problem in which a transfer layer of stamping foil is separated at a portion that is bent when the adherend is folded, secure binding force in printing with various inks, and fundamentally prevent powder generated during cutting according to a product standard in a stamping foil manufacturing process. To this end, the stamping foil of the present invention comprises: (a) a base film which is removed after stamping transfer; (b-1) a wear-resistant release layer formed on the base film and containing a polyurethane-based release agent, an acrylic resin, and an ethene-based polymer additive, or (b-2) (i) a polyurethane-based release layer formed on the base film and (ii) a wear-resistant layer formed on the polyurethane-based release layer and containing an acrylic matrix resin and an ethene-based polymer additive; (c) a moisture penetration-preventing and metal-deposited heat-resistant cured coating layer; (d) a metal deposition layer formed on the moisture penetration-preventing cured coating layer; and (e) optionally, a thick film protective layer formed on the metal deposition layer, for preventing the corrosion of the metal deposition layer.

Claims

1. A stamping foil comprising: (a) a base film removed after transfer by stamping; (b) any one of (b-1) a wear-resistant release layer formed on the base film, the wear-resistant release layer containing a polyurethane-based release agent, acrylic resin, and an ethene-based polymer additive, or (b-2) (i) a polyurethane-based release layer formed on the base film, and (ii) a wear-resistant layer formed on the polyurethane-based release layer, the wear-resistant layer containing acrylic matrix resin and an ethene-based polymer additive; (c) a moisture blocking and metal deposition heat-resistant cured coating layer; (d) a metal deposition layer formed on the moisture blocking and metal deposition heat-resistant cured coating layer; and (e) optionally, an anti-corrosion thick protection layer formed on the metal deposition layer.

2. The stamping foil according to claim 1, wherein the (b-1) wear-resistant release layer or (b-2) (ii) wear-resistant layer has a dry coating amount of 0.4 to 2 g/m2.

3. The stamping foil according to claim 1, wherein the (b-1) wear-resistant release layer is formed by applying a coating solution containing a polyurethane-based release agent of 5 to 30 wt %, acrylic resin of 50 to 80 wt %, an ethene-based polymer additive of 2 to 5 wt %, and a solvent of the remaining weight percentage, and the (b-2)(ii) wear-resistant layer is formed by applying a coating solution containing acrylic resin of 16 to 18 wt %, ethene-based polymer additive of 3 to 5 wt %, and a solvent of the remaining amount.

4. The stamping foil according to claim 1, wherein the anti-corrosion thick protection layer is formed by mixing a stamping foil adhesive of 5 to 30 wt %, metal-bondable vinyl-based resin or polyurethane-based adhesive resin having of 10 to 50 wt %, and a solvent and applying the mixture with a dry coating amount of 0.2 to 2 g/m2.

5. The stamping foil according to claim 1, wherein printing is possible on a surface of the release layer exposed after transferring the stamping foil onto the adherend and removing the base film.

6. The stamping foil according to claim 1, wherein the wear-resistant release layer (b-1) exposed after transferring the stamping foil onto the adherend and removing the base film is formed by applying a coating solution obtained by mixing polyurethane-based resin having printability, entire surface transferability, and an elongation of 100% or higher with acrylic resin and ethene-based polymer additive, or the release layer (b-2) (i) exposed after transferring the stamping foil on the adherend and removing the base film is formed by applying polyurethane-based resin having printability, entire surface transferability, and an elongation of 100% or higher.

7. The stamping foil according to claim 1, wherein the base film to be removed after the transfer by stamping is a polyethylene terephthalate (PET) film or a biaxially-oriented polypropylene (BOPP) film.

8. The stamping foil according to claim 1, wherein the moisture blocking and metal deposition heat-resistant cured coating layer is mixed with a dye for implementing a color in the coating solution to form a coloring layer.

9. The stamping foil according to claim 1, wherein the metal deposition layer is formed by vacuum-depositing metal selected from a group consisting of aluminum (Al), nickel (Ni), chromium (Cr), silver (Ag), or copper (Cu).

10. The stamping foil according to claim 1, wherein the stamping foil is a paper transfer stamping foil.

11. A method of manufacturing an adherend by applying the stamping foil according to claim 1, the method comprising: first step for (i) applying an adhesive layer on a thick protection layer of the stamping foil or using a stamping foil having an adhesive layer on the thick protection layer, or (ii) applying an adhesive layer on the entire surface of the adherend or on a part of the surface of the adherend; second step for transferring the stamping foil by stamping onto the adherend; third step for removing the base film of the stamping foil; and optionally, fourth step for performing printing on a surface of the release layer exposed by removing the base film.

12. The method according to claim 11, wherein the adherend is a paper sheet, the stamping foil is for paper transfer, and the adherend is recyclable as a raw material through paper recycling facility treatment at the time of disposal of a paper packaging material to which the stamping foil has been transferred, and the plastic film has been removed.

13. The method according to claim 11, wherein the adherend is a paper product or a wooden product, and the adherend printed by the stamping foil is recyclable.

14. The method according to claim 11, wherein the printing of the fourth step is performed by using PVC ink, acryl ink, PET ink, PP ink, or UV offset ink.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0108] FIG. 1 is a cross-sectional view illustrating stamping foil products A and B according to an embodiment of the present invention.

MODES FOR EMBODYING THE INVENTION

[0109] Preferred embodiments of the invention will now be described in details with reference to the accompanying drawings. It is noted that the following exemplary embodiments are merely for clear description, and they may be changed or modified in various different ways without departing from the spirit or scope of the present invention.

Example 1: Manufacture of Stamping Foil Having Polyurethane-Based Release Layer

[0110] To prepare a stamping foil sample, various release agents (such as OP wax, PE wax, cellulose acetate, cellulose acetate butyrate, methyl methacrylate, and polyurethane) were mixed with a solvent, and each mixture was applied to a PET base film. For the polyurethane-based release agent, polyurethane-based resin having an elongation of 100% or higher was employed, and was applied with a dry coating amount of 0.4 g/m.sup.2.

[0111] After the release agent is applied, a coating layer for preventing moisture penetration was formed by using a coating solution mixed with a gold dye as a colorant on the basis of an isocyanate curing method. Then, vacuum deposition was performed with aluminum. To form a thick protection layer, acrylic resin of 5 wt %, vinyl-based resin of 2 wt %, and a solvent of 93 wt % were mixed and applied. After laminating with a paper sheet using polysol, the plastic base film was removed.

[0112] On each release layer exposed on the surface after the removal of the base film, printing was performed with UV offset ink.

TABLE-US-00001 TABLE 1 preparation of sample (film was removed after transferring stamping foil to paper) UV offset ink print fixability OP wax/coloring/deposition/protection/ none at all polysol/paper PE wax/coloring/deposition/protection/ none at all polysol/paper cellulose acetate/coloring/deposition/ none at all protection/polysol/paper cellulose acetate butyrate/coloring/ none at all deposition/protection/polysol/paper methyl methacrylate/coloring/deposition/ none at all protection/polysol/paper polyurethane/coloring/deposition/ good protection/polysol/paper

[0113] After printing the UV offset ink, the ink fixability was checked with various types of tapes (such as a scratch tape or an OPP packaging tape) on the printed surface. As a result, it was recognized that only the sample using the polyurethane release agent has excellent print fixability with the UV offset ink (see Table 1).

[0114] In addition, after printing using various types of ink (such as PVC ink, Acryl ink, PET ink, and PP ink) on the polyurethane release layer, the print fixability was checked in the same way as described above. As a result, it was recognized that all of them have excellent fixability.

Example 2: Manufacture of Stamping Foil Having Wear-Resistant Layer Under Polyurethane-Based Release Layer

[0115] After applying the polyurethane release agent, as a wear-resistant layer, a resin coating solution mixed with polymethyl methacrylate (PMMA) of 17 wt %, ethene homopolymer of 3.5 wt %, and solvent of 79.5 wt % was applied to obtain a dry coating amount of 1.0 g/m.sup.2. Then, the surface scratch was compared with those of the samples prepared in Example 1 that have no wear-resistant layer.

TABLE-US-00002 TABLE 2 preparation of sample (film was removed after transferring stamping foil to paper) surface scratch OP wax/coloring/deposition/protection/ scratched polysol/paper PE wax/coloring/deposition/protection/ scratched polysol/paper cellulose acetate/coloring/deposition/ scratched protection/polysol/paper cellulose acetate butyrate/coloring/ scratched deposition/protection/polysol/paper methyl methacrylate/coloring/deposition/ scratched protection/polysol/paper polyurethane/coloring/deposition/ scratched protection/polysol/paper polyurethane/wear-resistant layer coating/ not scratched coloring/deposition/protection/polysol/ paper

[0116] The surface scratch was evaluated by scratching 2 to 5 times with a nail on the surface release layer after the transfer. In addition, as a result of rubbing 70 times per minute under a load of 500 g using a wear resistance measurement device, it was recognized that there was no scratch on the sample even after rubbing more than 5,000 times.

[0117] There was no surface scratch or separation of the transfer layer at the edge in folding only when the wear-resistant layer is applied under the polyurethane-based release layer.

Example 3: Manufacture of Stamping Foil Having Thick Protection Layer Applied Under Metal Deposition Layer

[0118] A polyurethane-based release layer was formed by applying a coating solution containing polyurethane-based resin with an elongation of 100% or higher to the PET base film to obtain a dry coating amount of 0.4 g/m.sup.2.

[0119] As the wear-resistant layer, a resin coating solution mixed with polymethyl methacrylate (PMMA) of 17 wt %, ethene homopolymer of 3.5 wt %, and solvent of 79.5 wt % was applied to obtain a dry coating amount of 1.0 g/m.sup.2.

[0120] Subsequently, a coating solution containing a gold dye of 1.2 wt % as a colorant was applied to obtain a dry coating amount of 1.2 g/m.sup.2, and an isocyanate curing method was employed to cure the coloring layer at a high drying temperature of 190° C. for about 8 seconds, so that a coloring layer that prevents moisture penetration and has no metal deposition change was obtained.

[0121] Then, aluminum was vacuum-deposited to form a metal deposition layer. To form a thick protection layer on the metal deposition layer, a coating solution containing acrylic resin of 5 wt %, vinyl resin of 2 wt %, and a solvent of 93 wt % was applied to obtain a dry coating amount of 0.5 g/m.sup.2. After laminating with a paper sheet using polysol, the PET base film was removed.

[0122] After transferring to the paper sheet, the sheet was left at a humidity of 80% and a temperature of 24° C. for 6 months, and a temperature and humidity test was performed by using a thermo-hygrostat.

[0123] The following Table 3 shows that a result of checking whether the paper transfer surface has changed or not.

TABLE-US-00003 TABLE 3 preparation of sample (film was removed change of packaging after transferring stamping foil to paper) material surface polyurethane/wear-resistant layer coating/ black spots appear after 3 coloring/deposition/polysol/paper months polyurethane/wear-resistant layer coating/ no change until 6 months coloring/deposition/protection/polysol/ paper

[0124] When the thick protection layer was coated, there was no change on the surface of the packaging material even after 6 months.

[0125] For the sample subjected to only vacuum deposition and no thick protection layer coating, block spots like fungus started to appear after 3 months.

Example 4: Setting of Dry Coating Amount of Each Coating Layer

[0126] The stamping foil product includes a PET film, a polyurethane release layer, an acrylic wear-resistant layer, an isocyanate coloring layer, an aluminum deposition layer, and a thick protection layer.

[0127] 4-1. Polyurethane Release Layer

TABLE-US-00004 TABLE 4 polyurethane layer dry coating amount result after transfer 0.08 g/m.sup.2 partially separated after film removal 1.20 g/m.sup.2 some transfer pieces were mixed after film removal

[0128] It was appropriate that the polyurethane-based release layer is applied with a dry coating amount of 0.1 to 1.0 g/m.sup.2.

[0129] 4-2. Acrylic Wear-Resistant Layer

[0130] (1) When methyl methacrylate of 17 wt % and ethene homopolymer of 3.5 wt % were mixed:

TABLE-US-00005 TABLE 5 dry coating amount of result of transfer layer wear-resistant layer nail scratching result separation check in folding 0.30 g/m.sup.2 partially scratched no transfer layer separated 2.50 g/m.sup.2 no scratch transfer layer separated partially

[0131] It was appropriate that the wear-resistant layer is applied with a dry coating amount of 0.4 to 2 g/m.sup.2.

[0132] (2) Difference between ratios of methyl methacrylate (MA) and ethene homopolymer (EH)

TABLE-US-00006 TABLE 6 weight ratio dry coating between amount of wear- MA and EH resistant layer nail scratch result 17:1.5 1.0 g/m.sup.2 partially scratched 17:4.5 1.0 g/m.sup.2 partially separated from polyurethane release layer

[0133] As the wear-resistant layer, it is appropriate to apply acrylic resin mixed with methyl methacrylate of 17 wt % and ethene homopolymer of 2 to 4 wt % with a dry coating amount of 0.4 to 2.0 g/m.sup.2.

[0134] 4-3. Selection of Coloring Layer

TABLE-US-00007 TABLE 7 coloring layer curing method heat-resistant temperature after deposition isocyanate curing 180° C. melamine curing 160° C. blocked isocyanate curing 150° C.

[0135] It is advantageous to form the coloring layer by applying the isocyanate curing method in terms of the heat resistance temperature after metal deposition.

[0136] 4-4. Metal Deposition Layer

[0137] Aluminum (Al) is advantageous in vacuum deposition because it is inexpensive, and various colors can be implemented.

[0138] 4-5. Mixing Ratio Between Acrylic Resin and Vinyl Resin in Thick Protection Layer

TABLE-US-00008 TABLE 8 mixing ratio (wt) between acrylic resin and dry coating vinyl-based resin amount result 5:1 0.5 g/m.sup.2 poorer deposition bondability 5:4 0.5 g/m.sup.2 faster moisture penetration

[0139] For the thick protection layer, it was appropriate to apply a dry coating amount of 0.5 g/m.sup.2 with a weight ratio of 5:2 between the acrylic resin and the vinyl resin.

Example 5: Method of Manufacturing (Producing) Stamping Foil Standard Product

[0140] If a two-color process coater is used to manufacture the stamping foil product, it is possible to simultaneously apply and dry the wear-resistant agent on the same surface after applying and drying the release agent on the plastic film.

[0141] For the plastic base film, a PET Film (SF-100, Hwaseung Industries, Co., Ltd.) having a thickness of 16 μm was employed.

[0142] First, to apply the release agent, a solution obtained by mixing a polyurethane release agent of 4 wt % and a solvent of 96 wt % was applied with a 210 mesh gravure roll up to a dry coating amount of 0.4 g/m.sup.2. When the release agent was applied, four sections of a drying furnace, each 2 m in length, were maintained at 100, 100, 110, and 110° C., respectively, and a production speed was set to 120 m/min.

[0143] Second, when the wear-resistant agent was applied, a solution obtained by mixing methyl methacrylate of 17 wt %, ethene homopolymer of 3.5 wt %, and a solvent of 79.5 wt % was applied with a 210 mesh gravure roll up to a dry coating amount of 1.0 g/m.sup.2. When applying the wear-resistant agent, six sections of the drying furnace, each 2 m in length, were maintained at 100, 130, 140, 150, 130, and 100° C., respectively, and the production speed was set to 120 m/min, similar to that of the release agent.

[0144] When applying the colorant, the drying furnace was divided to six sections. After preparing a solution by mixing a gold dye of 1.2 wt % with an isocyanate curing type solution, it was applied with a 210 mesh gravure roll up to a dry coating amount of 1.2 g/m.sup.2. When applying the colorant, six sections of the drying furnace, each 2 m in length, were maintained at 110, 140, 150, 170, 190, and 100° C., respectively, and the production speed was set to 120 m/min.

[0145] After forming the coloring layer, aluminum (Al) was vacuum-deposited. In this case, the deposition thickness was maintained at 2.4 with an optical density meter.

[0146] When applying the thick protection agent, a drying furnace having six sections was used. A solution containing acrylic resin of 5 wt %, vinyl-based resin of 2 wt %, and a solvent of 93 wt % were prepared, and it was applied with a 210 mesh gravure roll up to a dry coating amount of was 0.5 g/m.sup.2. In this case, the six sections of the furnace, each 2 m in length, were maintained at 90, 90, 100, 120, and 100° C., respectively, and the production speed was set to 120 m/min.

Example 6

[0147] 6-1. Preparation of Sample of Stamping Foil Having Both Releasability and Wear Resistance

[0148] First, a coating solution was prepared by mixing a polyurethane release agent of 10 wt %, acrylic resin of 60 wt %, ethene homopolymer of 4 wt %, and a solvent.

[0149] The mixed resin coating solution, and as a control group, various release agents (such as OP wax, PE wax, cellulose acetate, cellulose acetate butylate, and methyl methacrylate) were applied to the PET base film.

[0150] After the release agent is applied, a moisture penetration prevention coating layer was formed by using a coating solution mixed with a gold dye as a colorant on the basis of the isocyanate curing method. Then, vacuum deposition was performed with aluminum. To form the thick protection layer, a mixture containing a conventional fiber stamping foil adhesive of 8 wt %, vinyl resin of 15 wt %, and a solvent of 77 wt % were mixed and applied up to a dry coating amount of 1.0 g/m.sup.2. After laminating with a paper sheet using polysol, the plastic base film was removed to prepare each stamping foil sample.

[0151] 6-2. Comparison of UV Offset Ink Fixability for Each Stamping Foil Sample

[0152] The fixability was compared after printing with the UV offset ink on the release layers of each surface of the stamping foil samples exposed after removal of the plastic base film.

TABLE-US-00009 TABLE 9 preparation of sample (film was removed after transferring stamping foil to paper) UV offset ink print fixability OP wax/coloring/deposition/protection/ none at all polysol/paper PE wax/coloring/deposition/protection/ none at all polysol/paper cellulose acetate/coloring/deposition/ none at all protection/polysol/paper cellulose acetate butyrate/coloring/ none at all deposition/protection/polysol/paper methyl methacrylate/coloring/deposition/ little protection/polysol/paper polyurethane resin + acrylic resin + ethene good polymer/coloring/deposition/protection/ polysol/paper

[0153] After printing the UV offset ink, the ink fixability was checked with various tapes (such as a scratch tape or an OPP packaging tape) on the printing surface. As a result, it was recognized that only the sample obtained from this example by using the coating solution containing polyurethane resin, acrylic resin, and ethene-based polymer has excellent print fixability for the UV offset ink (see Table 9).

[0154] In addition, printing was performed with various types of ink (such as PVC ink, acryl ink, PET ink, and PP ink) on the sample obtained by using the coating solution containing polyurethane resin, acrylic resin, and ethene-based polymer in this example. Then, the print fixability was checked in the same way as described above. As a result, it was recognized that all of them have excellent fixability.

[0155] 6-3. Comparison of Wear Resistance Property for Each Stamping Foil Sample

[0156] The samples prepared in Example 6-1 were compared regarding whether the surface exposed after removing the plastic base film is scratched or not. The surface scratching was evaluated by scratching 2 to 5 times with a nail.

TABLE-US-00010 TABLE 10 preparation of sample (film was removed after transferring stamping foil to paper) surface scratch OP wax/coloring/deposition/protection/ scratched polysol/paper PE wax/coloring/deposition/protection/ scratched polysol/paper cellulose acetate/coloring/deposition/ scratched protection/polysol/paper cellulose acetate butyrate/coloring/ scratched deposition/protection/polysol/paper methyl methacrylate/coloring/deposition/ scratched protection/polysol/paper polyurethane resin + acrylic resin + ethene not scratched polymer/coloring/deposition/protection/ polysol/paper

[0157] As a result, it was recognized that only the sample obtained by using the coating solution containing polyurethane resin, acrylic resin, and ethene-based polymer has no surface scratch (see Table 10).

[0158] In addition, rubbing was performed 70 times per minute at a load of 500 g using a wear resistance meter for the sample obtained by using the coating solution containing polyurethane resin, acrylic resin, and ethene-based polymer. As a result, it was recognized that the sample was not scratched even after rubbing of 5000 times or more.

[0159] In the case of the sample obtained by using the coating solution containing polyurethane resin, acrylic resin, and ethene-based polymer, there was almost no separation of the transfer layer at the edge in folding.

[0160] In short, it was recognized that the coating film formed from the coating solution containing polyurethane resin, acrylic resin, and ethene-based polymer of this example can provide both releasability and wear resistance to the surface of the stamping foil and excellent ink fixability.

Example 7

[0161] 7-1. Preparation of Sample of Stamping Foil Having Thick Protection Layer Mixed with Vinyl Resin

[0162] A coating solution obtained by mixing polyurethane release resin of 10 wt %, acrylic resin of 60 wt %, ethene homopolymer of 4 wt %, and a solvent was applied to the PET base film up to a dry coating amount of 1.0 g/m.sup.2.

[0163] After the mixed resin coating solution having wear resistance and releasability is applied, a moisture penetration prevention coating layer was formed by using a coating solution mixed with a gold dye as a colorant on the basis of the isocyanate curing method. Then, vacuum deposition was performed with aluminum.

[0164] As a control group, to form a thick protection layer, a conventional fiber adhesive [silica dioxide (SiO.sub.2)+vinyl chloride vinyl acetate copolymer+acryl copolymer+nitro cellulose+solvent] and a paper adhesive [polyester resin+poly vinyl acetate+polyvinyl butyral+phenolic resin+ silicon dioxide (SiO.sub.2)+thickener+solvent] were applied up to a dry coating amount of 1.0 g/m.sup.2.

[0165] In order to form the thick protection layer of this example, a coating solution obtained by mixing a fiber stamping foil adhesive of 8 wt %, vinyl resin of 15 wt %, and a solvent of 77 wt % was applied up to a dry coating amount of 1.0 g/m.sup.2.

[0166] Then, after laminating with a paper sheet using polysol, the plastic base film was removed to prepare each stamping foil sample.

[0167] 7-2. Checking on Debris Generated in Thick Protection Layer Mixed with Vinyl Resin

[0168] The prepared stamping foil samples were put into a cutter (slitter) to check whether debris is generated at the cut portion or not.

TABLE-US-00011 TABLE 11 preparation of sample (film was removed after transferring stamping foil to paper) existence of debris polyurethane resin + acrylic resin + ethene debris generated polymer/coloring/deposition/ conventional fiber adhesive/polysol/ paper polyurethane resin + acrylic resin + ethene debris generated polymer/coloring/deposition/ conventional paper adhesive/polysol/ paper polyurethane resin + acrylic resin + ethene no debris generated polymer/coloring/deposition/fiber adhesive + vinyl resin/polysol/paper

[0169] As shown in Table 11, only the sample having the thick protection layer formed by mixing vinyl resin with a conventional fiber adhesive of this example did not generate any debris.

[0170] 7-3. Comparison of Moisture Blocking Effect of Thick Protection Layer Mixed with Vinyl Resin

[0171] How effectively moisture can be blocked was compared between a packaging material sample (control group) obtained by performing vacuum deposition of aluminum and transferring it to a paper sheet without the thick protection layer and a packaging material sample of this example obtained by forming a thick protection layer mixed with vinyl resin and transferring it to a paper sheet.

TABLE-US-00012 TABLE 12 preparation of sample (film was removed change of packaging after transferring stamping foil to paper) material surface polyurethane resin + acrylic resin + ethene black spots appear after 3 polymer/coloring/deposition/polysol/ months paper polyurethane resin + acrylic resin + ethene no change until 6 months polymer/coloring/deposition/protection layer mixed with vinyl resin/polysol/ paper

[0172] For the packaging material sample obtained by performing only vacuum deposition without the thick protection layer, black spots like fungus started to appear after 3 months. On the other hand, for the sample of this example obtained by applying the thick protection layer mixed with vinyl resin, there was no change on the surface of the paper packaging material even after 6 months at a humidity of 80% and a temperature of 24° C.

Example 8: Setting of Resin Content and Dry Coating Amount for Each Coating Layer

[0173] Reflecting the results of Examples 6 and 7, in order to set the resin content and dry coating amount of each coating layer, the stamping foil product composition was selected to include a PET film, a wear-resistant release layer (polyurethane-based release resin, acrylic matrix resin, and ethene-based polymer additive), an isocyanate-cured coloring layer, an aluminum deposition layer, and a thick protection layer containing vinyl resin.

[0174] 8-1. Setting of ratio of mixed resin (including polyurethane-based release resin, acrylic matrix resin, and ethene-based polymer additive) in wear-resistant release layer

TABLE-US-00013 TABLE 13 resin type ratio result ethene-based homopolymer 2 wt % surface scratched ethene-based homopolymer 5 wt % lack of offset ink fixability polyurethane release agent 5 wt % bad releasability polyurethane release agent 30 wt % cutting debris generated acrylic resin 50 wt % lack of glossiness acrylic resin 80 wt % lack of offset ink fixability

[0175] For the release and wear-resistant layers, it was appropriate to mix a polyurethane-based release agent of 10 wt %, acrylic resin of 60 wt %, ethene-based polymer of 4 wt %, and other solvents.

[0176] 8-2. Setting of Dry Coating Amount of Wear-Resistant Release Layer

TABLE-US-00014 TABLE 14 dry coating amount of wear- resistant release layer result after transfer 0.50 g/m.sup.2 partially separated after film removal  2.0 g/m.sup.2 some transfer pieces were mixed after film removal

[0177] For the wear-resistant release layer, it was appropriate to apply a coating solution obtained by mixing a polyurethane-based release agent of 10 wt %, acrylic resin of 60 wt %, ethene-based polymer of 4 wt %, and other solvents up to a dry coating amount of 1.0 g/m.sup.2.

[0178] 8-3. Selection of Coloring Layer

TABLE-US-00015 TABLE 15 coloring layer curing method heat-resistant temperature after deposition isocyanate curing 180° C. melamine curing 160° C. blocked isocyanate curing 150° C.

[0179] It is advantageous to form the coloring layer by applying the isocyanate curing method in terms of the heat resistance temperature after metal deposition.

[0180] 8-4. Metal Deposition Layer

[0181] Aluminum (Al) is advantageous in vacuum deposition because it is inexpensive, and various colors can be implemented.

[0182] 8-5. Mixing ratio between fiber adhesive and vinyl-based resin in the thick protection layer

TABLE-US-00016 TABLE 16 mixing ratio (wt) between fiber adhesive and dry coating vinyl-based resin amount result  5:50 1.0 g/m.sup.2 blocking 30:10 1.0 g/m.sup.2 debris generated

[0183] To form the thick protection layer, it was appropriate to apply a coating solution obtained by mixing a conventional fiber stamping foil adhesive of 8 wt %, vinyl resin of 15 wt %, and a solvent of 77 wt % up to a dry coating amount of 1.0 g/m.sup.2.

Example 9: Method of Manufacturing Stamping Foil Standard Product

[0184] If a two-color process coater is used to manufacture the stamping foil product, it is possible to simultaneously apply and dry the colorant on the same surface after applying and drying the wear-resistant agent on the plastic film.

[0185] For the plastic base film, a PET Film (SF-100, Hwaseung Industries, Co., Ltd.) having a thickness of 16 μm was employed.

[0186] First, to form the wear-resistant release layer, a coating solution obtained by mixing a polyurethane-based release agent of 10 wt %, acrylic resin of 60 wt %, ethene homopolymer of 4 wt %, and other solvents of 26 wt % was applied with a 210 mesh gravure roll up to a dry coating amount of 1.0 g/m.sup.2. For releasing and applying the wear-resistant agent, four sections of the drying furnace, each 2 m in length, were maintained at 100, 100, 110, and 110° C., respectively, and the production speed was set to 120 m/min.

[0187] When applying the colorant, the drying furnace was divided to six sections. After preparing a solution by mixing a gold dye of 1.2 wt % with an isocyanate curing type solution, it was applied with a 210 mesh gravure roll up to a dry coating amount of 1.2 g/m.sup.2. When applying the colorant, six sections of the drying furnace, each 2 m in length, were maintained at 110, 140, 150, 170, 190, and 100° C., respectively, and the production speed was set to 120 m/min, similar to that of the wear-resistant release layer.

[0188] After forming the coloring layer, aluminum (Al) was vacuum-deposited. In this case, the deposition thickness was maintained at 2.4 with an optical density meter.

[0189] When applying the thick protection agent, a drying furnace having six sections was used. A solution were prepared by mixing a conventional stamping foil adhesive of 8 wt %, vinyl-based resin of 15 wt %, and a solvent of 77 wt %, and it was applied with a 210 mesh gravure roll up to a dry coating amount of was 1.0 g/m.sup.2. In this case, for the thick protection agent, the six sections of the furnace, each 2 m in length, were maintained at 90, 90, 100, 120, and 100° C., respectively, and the production speed was set to 120 m/min.