JP7185253B2 - Hydraulic transfer method and activator used in this method - Google Patents

Description

The present invention provides, for example, a method for forming a decorative layer (transfer layer) imparting luster such as metal tone, plating tone, and hologram tone by hydraulic transfer, and an activator for activating the hydraulic transfer film used in this method. It is about.

In recent years, in the art of decorating the surface of articles, instead of or in addition to conventional decoration by printing or painting with pigment-based or dye-based inks or paints, glittering by forming thin films of metals, metal oxides, etc. A wide variety of techniques for applying to the surface of articles have been implemented.

In order to obtain such a glittering design, a decoration technique using a hydraulic transfer process has been developed in place of the conventional sputtering process. In this glittering decoration technology by hydraulic transfer, a hydraulic transfer film (sometimes referred to as a hydraulic transfer sheet) having a decorative layer containing a metal layer is used, and the decorative layer is embossed as necessary. It is processed, and typical techniques thereof are disclosed in Japanese Patent Application Laid-Open No. 2013-000893 (Patent Document 1) and WO2016/088702 (Patent Document 2).

The technique disclosed in Patent Document 1 includes a transfer adjustment layer and a metal thin film layer that are sequentially applied on a water-soluble base film, and an uneven pattern is formed between the transfer adjustment layer and the metal thin film layer by embossing. It uses a hydraulic transfer film that has been used. When this hydraulic transfer film is hydraulically transferred onto an article, a decorative layer having a hologram effect is formed on the article. However, since the metal layer of the hydraulic transfer film does not have water wettability, when the hydraulic transfer film is wetted with water, uneven cracks occur in the metal layer, and the decorative layer becomes a three-dimensional surface of the article. In addition, since the crack generation pattern of the metal layer changes according to the pitch and depth of the emboss (unevenness), it is necessary to control the pitch and depth of the emboss to prevent cracks. Attempting to achieve uniformity may limit the degree of freedom in designing glittering design effects (for example, holographic effects, etc.) resulting from embossing.

Patent Document 2 is devised to improve this, and the decoration technology disclosed in Patent Document 2 is a water-soluble base film and at least a non-stretchable film formed on the water-soluble base film. A hydraulic transfer film including a flexible decorative layer (for example, a metal layer) and a stretchable decorative layer (for example, a printed layer) is used. The decorative layer is a technology that forms a plurality of pre-cracks in its thickness direction. By forming pre-cracks in the non-stretchable decorative layer, the hydraulic transfer film can be uniformly stretched, and the activator reliably activates the print layer, which is the extensible decorative layer, through the pre-cracks. Therefore, it is possible to hydraulically transfer a highly designed decorative layer while improving throwing power and brilliance on the article surface.

However, in the decoration techniques of Patent Documents 1 and 2, either the swelling and extension of the transfer film is insufficient, or it is necessary to control this extension. Since the decorative layer itself of the hydraulic transfer film must be adjusted each time, in order to obtain decorative articles having various luster, it is necessary to prepare a variety of different hydraulic transfer films, which reduces productivity. low and room for improvement.

Japanese Patent Laid-Open No. 2013-000893 WO2016/088702

The problem to be solved by the present invention is to provide a hydraulic transfer method for a glittering decorative layer that can obtain various glitters without preparing a variety of different hydraulic transfer films in order to adjust the glittering. to do.

A means for solving the problems of the present invention is to dispose a hydraulic transfer film comprising a water-soluble base film and an extensible decorative layer formed on the water-soluble base film on the water surface of a hydraulic transfer tank, and the hydraulic transfer In the method of pressing an article against a film and hydraulically transferring the decorative layer to the surface of the article, the decorative layer of the hydraulic transfer film is swollen and extended using an activator containing a metal thin film piece material with an embossed surface. At this time, the metal thin film piece material with an embossed surface is adhered to the decorative layer and/or at least a part of the metal thin film piece material enters the decorative layer to form the metal thin film piece material with the embossed surface. To provide a hydraulic transfer method for imparting glitter to a decorative layer.

In the means for solving the problems of the present invention, it is preferable that the metal thin film piece material with an embossed surface is formed by laminating a resin thin film on a metal thin film.

In the means for solving the problems of the present invention, the metal thin film piece material with an embossed surface contains 0.5 to 5 parts by weight with respect to 100 parts by weight of components other than the metal thin film piece material in the activator. preferable.

In the means for solving the problems of the present invention, it is preferable that the maximum length of the surface of the embossed metal thin film piece material is 80 μm or less.

In the means for solving the problems of the present invention, the embossed metal thin film piece material preferably has a specific gravity of 1.0 to 2.0.

In the means for solving the problems of the present invention, the activator may be a solvent-type activator or an ultraviolet curable activator containing a photopolymerizable monomer that dissolves the decorative layer.

According to the present invention, the material that imparts glitter to the decorative layer activates the hydraulic transfer film during hydraulic transfer, not on the hydraulic transfer film side as in the prior art (Patent Documents 1 and 2). Because it is in the active agent, it is possible to achieve the following effects that cannot be obtained with the prior art.
(1) Improvement of swelling extensibility of the hydraulic transfer film When a metal layer is included on the hydraulic transfer film side for imparting glitter as in the prior art according to Patent Documents 1 and 2, cracks occur in the metal layer. Without it, it is difficult to swell and extend the transfer film, so good hydraulic transfer cannot be performed to obtain a glittering decorative layer. Since there is no need to provide a metal layer that hinders swelling and extension, the transfer film can be smoothly swelled and extended, so that a glittering decorative layer can be obtained by good hydraulic transfer.

(2) Elimination of work to promote swelling and extension on the transfer film side (Improved workability and economic efficiency, Part 1)
As in the prior art of Patent Document 2, when pre-cracks are formed in the metal layer of the hydraulic transfer film and the activator swells and extends the extensible decorative layer through the pre-cracks, pre-cracks are formed. However, the present invention does not require a metal layer on the transfer film, and therefore does not require the formation of cracks in advance. It can be obtained economically.

(3) Elimination or reduction of preparatory work before application of the activator (improved workability and economy, Part 2),
It is desirable that the metal thin film flake material with an embossed surface that imparts luster is uniformly dispersed in the activator. The sedimentation of the material after mixing with the main component is slow, and the work of stirring the activator is not necessary or only a little stirring work is required, and from this aspect also high workability and economic efficiency can be obtained. In particular, this sedimentation prevention tendency is remarkable when a resin thin film is laminated on the metal thin film piece with an embossed surface.

(4) Ease of adjusting the brightness of the decorative layer In the conventional technology, the brightness of the metal layer that imparts brightness is adjusted by changing the embossing pattern. Although it is necessary to prepare the transfer film individually, the present invention makes it possible to easily adjust the brightness of the decorative layer by changing the mixing ratio of the metal thin film piece material with an embossed surface in the activator and the coating amount of the activator. can do. In addition, in the conventional technology using a hydraulic transfer film on which an embossed metal layer is formed, the embossed pattern is constant, so the directionality of visual recognition is constant, so the visibility is low depending on the direction. According to the present invention, the metal thin film piece material with an embossed surface is randomly dispersed in the activator. It is possible to obtain an unprecedented and unique glittering decorative layer in which the random hologram effect of the material and the hydraulically transferred decorative layer are fused.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic explanatory drawing of the hydraulic transfer method to which the method of this invention is applied. 1 is an enlarged cross-sectional view of a hydraulic transfer film used in the method of the present invention; FIG. FIG. 4 is a schematic cross-sectional view showing a step of hydraulically transferring a glittering decorative layer to an article by the method of the present invention; FIG. 4 is a schematic cross-sectional view showing a step of hydraulically transferring a glittering decorative layer to an article by the method of the present invention; FIG. 4 is an enlarged cross-sectional view of a different form of embossed surface metal film strip material used in the method of the present invention;

The hydraulic transfer method of the present invention will be described in detail with reference to the drawings. As shown in FIG. The hydraulic transfer film 20 (see FIG. 2) having a decorative layer 22 of 1 is fed out from its supply source 20S by the supply roll 20R, and pushed into the water 30W of the hydraulic transfer tank 30 together with the article 10, so that the hydraulic transfer film 20 is heated. The decorative layer 22 is hydraulically transferred to the surface of the article 10 to form a decorative layer (transfer layer) 20T (see FIGS. 3(C), 3(D) and 4). The activator can be applied to the hydraulic transfer film 20 in any manner, but is typically applied to a supply roll 20R before the hydraulic transfer film 20 lands on the water, as shown in FIG. is applied by a spray application type or roller application type activator application device 40 in front of the . In addition, the activator may be spray-coated after the hydraulic transfer film lands on water.

The water-soluble base film 21 of the hydraulic transfer film 20 is made of, for example, a water-soluble material containing polyvinyl alcohol as a main component, which absorbs water, swells, softens, and expands. The water-soluble base film 21 is softened by contact with the water 30W in the transfer tank 30 during the hydraulic transfer, and follows the article to be decorated so that the hydraulic transfer can be performed.

As will be described later, the extensible decorative layer 22 of the hydraulic transfer film 20 can be dissolved or softened by an activator and stretched during hydraulic transfer, like a printed layer such as a pattern formed with ink or paint. This is the decorative layer. The decorative layer 22 is formed on the water-soluble base film 21 by gravure printing or other suitable printing means.

The decorative layer 22 of the hydraulic transfer film 20 is composed of a printed layer 22P that imparts patterns and colors to the article 10. The printed layer 22P is used for the purpose of storing the hydraulic transfer film until the activator is applied. is in a dried state, and after the activator is applied, it is dissolved or softened by the activator to restore adhesiveness and facilitate spreading. The inks used in the printed layer can be the same as those used in conventional hydraulic transfer films. The printed layer 22P includes a plain (non-patterned) printed layer in addition to patterns, characters, symbols, and the like.

In the method of the present invention, as shown in FIG. 3(A), an embossed surfaced metal thin film strip material (hereinafter sometimes simply referred to as metal thin film strip) 52 is included to activate the hydraulic transfer film 20. The decoration layer 22 of the hydraulic transfer film 20 is wet-stretched using an activator 50, and at this time, the metal thin film piece material 52 with an embossed surface adheres to the decoration layer 22 and/or at least the metal thin film piece material A part of the metal thin film piece material 52 with an embossed surface is allowed to enter the decorative layer, thereby imparting luster to the decorative layer 22. - 特許庁Thus, the hydraulic transfer film 20 having the decorative layer 22 to which the metal thin film piece material 52 with an embossed surface is adhered and/or at least a portion of the metal thin film piece material has entered the decorative layer (see FIG. 4). 3B, when the decorative layer 22 is hydraulically transferred to the article 10, a glittering decorative layer 20T is adhered to the surface of the article 10. As shown in FIG.

When the activator 50 is solvent-based, as shown in FIG. However, if the activator 50 is made of an ultraviolet curable resin containing a photopolymerizable monomer that dissolves the decorative layer 20, the ultraviolet curable resin is applied. Since it permeates into the decorative layer 22 and imparts chemical and mechanical protection to the decorative layer 22, no topcoat is required as shown in FIG. 3(D). Hereinafter, the decorative layer 22 integrated with the ultraviolet curable resin is denoted by reference numeral 22M.

In the example of FIG. 3, the metal thin film pieces 52 are orderly arranged on the decorative layer 22 of the hydraulic transfer film 20, but the metal thin film pieces 52 are the conventional technology (Patent Document 2). Unlike the metal layer of FIG. The thin film pieces 52 can also be randomly dispersed in two dimensions and in three dimensions, and in this case, the same high degree of brilliance can be exhibited.

As described above, the activator 50 is composed of a main component having an activating (dissolving) function and the metal thin film pieces 52, which will be described in further detail below.

When the activator is solvent-based, the main component that contributes to activation is preferably a composition containing, as essential components, a resin component, a solvent component, and a plasticizer component. It can be a composition used for the solvent-based activator. Further, when the activator is a photocurable system, the activator is preferably a composition containing as an essential component a photopolymerizable monomer having a function of dissolving the decorative layer 22. It can be a composition used for an agent.

Several forms of metal film strips 52 for use in the present invention are shown in FIG. Each of these will be described in detail below.

A metal thin film piece 52A shown in FIG. 5(A) is a typical example, and has an embossment 52e only on the surface by embossing a metal thin film 52M. Metal thin film pieces 52 of this form are typically commercially available as holo powder. Metals used for the metal thin film pieces 52A include, for example, single metals or alloys such as aluminum, chromium, nickel, copper, gold, tin, zinc, brass, and stainless steel, and metal oxides such as aluminum oxide and silicon dioxide. be able to.

The metal thin film pieces 52B to 52E shown in FIGS. 5B to 5E are formed by laminating a resin thin film (hereinafter referred to as a resin thin film) 52P on a metal thin film 52M. is. A suitable resin for laminating the metal thin film 52M is typically polyethylene terephthalate (PET), but is not limited thereto. Moreover, the resin thin film 52P is preferably transparent so that the metal thin film 52M can be visually recognized from the back surface.

The metal thin film pieces 52B, 52C, and 52E shown in FIGS. 5B, 5C, and 5E are in a form in which the metal thin film 52M is embedded in the resin thin film 52P. The metal thin film piece 52D has a form in which the metal thin film 52M is laminated on the resin thin film 52P. In both forms, the metal thin film 52M and the resin thin film 52P are embossed, but the metal thin film pieces 52B, 52D and 52E in FIGS. The back surface is flat, and only the metal thin film piece 52C shown in FIG. 5(C) is embossed on both the front and back surfaces.

Since the metal thin film pieces 52 are not necessarily dispersed in the activator 50 so that the front surface and the back surface are in the same direction, when the activator 50 is applied to the hydraulic transfer film 20, the embossed surface of the product will be different after the hydraulic transfer. Therefore, it is preferable to have embossed surfaces on both sides as shown in FIG. 5(C).

Further, as shown in FIGS. 5B to 5E, when the resin thin film 52P is laminated, the specific gravity of the metal thin film piece 52 is adjusted, and the material of the resin thin film 52P can be appropriately selected. Therefore, the adhesiveness (adhesion) between the decorative layer T having the metal thin film pieces 52 and the article 10 can be improved after hydraulic transfer. Furthermore, the brightness of the decorative layer T can be adjusted by the thickness of the resin thin film 52P. In addition, since the surface of the metal thin film piece 52 is easily charged by the resin thin film 52P, when the activator is applied by an electrostatic spray, the activator is atomized into a fine mist, thereby improving the coatability.

When the metal thin film piece 52 is made of only metal, for example, after forming a metal foil, the metal foil is embossed by stamping or laser processing to form an embossed metal foil, and the embossed metal foil is formed. It can be formed by pulverizing metal foil.

(Dimensions of metal thin film piece)
The metal thin film piece 52 preferably has a maximum dimension of 80 μm or less in the longitudinal direction of the surface, more preferably 50 μm or less, and most preferably 30 μm or less. If the maximum value in the longitudinal direction of the surface exceeds 80 μm, the adhesion between the article 10 and the transferred glittering decorative layer 20T is lowered, or the smoothness of the top coat 60 (FIG. 3(C)) cannot be maintained. It may disappear. Incidentally, the lower limit value of the surface of the metal thin film piece 52 in the longitudinal direction is sufficient as long as the brilliance due to the embossing is not lost. By setting this size range, it is possible to secure the coatability of the activator, to ensure the adhesion between the article 10 and the glitter decoration layer 20T and the smoothness of the top coat 60, and to add glitter after hydraulic transfer. A desired luster can be imparted to the decorative layer 20T.

(Specific gravity of metal thin film piece)
The metal thin film piece 52 preferably has a specific gravity in the range of 1.0 to 2.0, which is set according to the specific gravity of the main component that contributes to activation. When the specific gravity of the metal thin film pieces 52 is within this range, separation due to sedimentation or floating of the metal thin film pieces 52 in the activator is difficult to occur. The brilliance of the decoration layer 20T can be stably obtained.

(Combination ratio of metal thin film pieces)
The mixing ratio of the metal thin film pieces 52 in the activator 50 is preferably 0.5 to 5 parts by weight per 100 parts by weight of the components other than the metal thin film piece material in the activator 50 . If this mixing ratio is less than 0.5 parts by weight, it may be difficult to obtain sufficient glitter. This ratio range is preferable because the adhesion with the layer 20T may be lowered.

The activator 50 may contain known additives such as extender pigments, leveling agents, and matting agents as long as they do not impair the effects of the present invention.

Some specific embodiments of the invention are described in detail below with reference to Table 1 below.

Table 1 shows 19 examples, all of which were implemented in the form of FIG. 1 except for the method of applying the activator (activation method). In all examples, the conditions for applying the activator were as follows.
(a) Activator coating amount: 12 g/m ²
(b) activation (dissolution) method
A: Roll coater application (see Figure 1)
B: Electrostatic spray coating
(c) Material to be transferred: Flat plate made of ABS resin manufactured by UMG ABIS Co., Ltd., 100 mm x 200 mm x 3 mm thick
(d) Top coat: Spray coating of "RECRACK 7000 clear" manufactured by Fujikura Kasei Co., Ltd. (Examples 1 to 17 using a solvent-based activator)
(e) Curing conditions for UV curable UV activator system
A type metal halide lamp (manufactured by GS Yuasa Power Supply Co., Ltd., MAN800NL) was used to obtain a peak intensity of 300 mW/cm ² and an integrated light amount of 2300 mJ/cm ² .

(activator)
Examples 1 to 17 use a solvent-type activator (solvent-type activator CPA-H manufactured by Taica Co., Ltd.), and Examples 18 and 19 use an ultraviolet curable resin-type activator (Ohashi Chemical Co., Ltd. product The name "Ubik S Clear 33-N2" was used.

(metal thin film piece)
Examples 1 to 11, 18 and 19 use an activator containing metal thin film pieces laminated with a resin layer, and Examples 12 to 17 use an activator containing metal thin film pieces having no resin layer. was used. Each metal thin film piece having a resin layer was formed by pulverizing COLOSER-PRISM, an aluminum foil with a resin layer manufactured by Jujo Chemical Co., Ltd. In Example 1, COLOSER-PRISM #315 and Examples 2 to 8 and 18 and 19 used COLOSER-PRISM#500, Example 9 used COLOSER-PRISM#256, and Examples 10 and 11 used COLOSER-PRISM#375. In all the examples, the dimension of the metal thin film piece indicates the maximum length of the surface in the longitudinal direction. The blending ratio is expressed in parts by weight. The dimensions, specific gravity and compounding amount in each example were as described in the column corresponding to each example in the table.

Each characteristic described in the evaluation column of the table in FIG. 6 was evaluated according to the following criteria.
1. Coating property of activator The activator of each example was applied to the material to be transferred by the corresponding method A or B, and the presence or absence of coating unevenness due to the sedimentation of the metal thin film pieces was visually confirmed. . The coatability was evaluated as "good" (indicated by "○") when the metal thin film particles did not settle even after 10 minutes and no coating unevenness occurred, and precipitated within 10 minutes. The case where coating unevenness occurred was evaluated as "improper".
2. Brightness of Decorative Layer (Transfer Layer) 20T Visually confirm the state of color shift in the decorative layer (transfer layer) of the water pressure transfer product obtained in each example, and add color shift due to the metal thin film pieces. A case where the color shift appeared on the entire surface of the decorative layer was evaluated as "excellent" (indicated by "○"), and a case where only the small piece of metal thin film exhibited a color shift was evaluated as "good" (indicated by "△"). , and a case in which no color shift occurred was evaluated as "improper". When water pressure transfer was performed using a solvent-based activator, evaluation was performed with a topcoat applied, and when an ultraviolet-curable activator was used, evaluation was performed without a topcoat.
3. Topcoat smoothness For the hydraulic transfer products of Examples 1 to 17 in which the topcoat was formed on the decorative layer (transfer layer), the presence or absence of unevenness derived from the metal thin film pieces on the surface of the topcoat was visually evaluated. When the number of unevenness in the area is 0, it is evaluated as “excellent” (indicated by “◎”), and when 1 to 9 is evaluated as “good” (indicated by “〇”), 10 to The case of 19 was evaluated as "acceptable" (indicated by "Δ"), and the case of 20 or more was evaluated as "impossible".
4. Adhesion between the article and the transfer layer In the decorative layer (transfer layer) of the hydraulic transfer product obtained in each example, cuts are made in a grid pattern at intervals of 1 mm to form 100 square squares of 1 mm square. After that, in the region where the squares were formed, using Cellotape (registered trademark) (manufactured by Nichiban), the state of peeling was observed by a cross-cut test (according to the old JIS K5400-8.5) to evaluate the adhesion. In this case, the case where there is no peeled grid of the decorative layer (transfer layer) after the cross-cut test is evaluated as "good" (indicated by "○"), and the case where a part of the grid is peeled off is evaluated as "acceptable". (indicated by "Δ"), and when one or more squares were peeled off, it was evaluated as "improper". When water pressure transfer was performed using a solvent-based activator, evaluation was performed with a topcoat applied, and when an ultraviolet-curable activator was used, evaluation was performed without a topcoat.

From the evaluation results in Table 1, it can be seen that good effects can be obtained without being evaluated as "improper" in any of the properties (evaluation items) in any of the examples. Details of the results for each evaluation item will be described below.
(1) Coatability of activator All the examples were "good". In Examples 12, 15, and 16 using the activation method (B) by electrostatic spray coating, the metal thin film pieces in the activator did not have a resin layer. Since the conductivity is higher than that of the small pieces, compared with other examples in which the activator containing the metal thin film pieces having the resin layer was electrostatically sprayed, there was no problem, but the mist tended to be coarser. rice field. In this way, when uneven application of the activator occurs, the quality of the design of the transferred decorative layer deteriorates more than when the application mist is fine, and the distribution of the metal thin film particles becomes uneven, resulting in an uneven hologram effect. Become. Therefore, in the case of antistatic spray coating, it is preferable to use metal thin film pieces having a resin layer.
(2) Excellent glitter The glitter was "excellent" or "good" except for Examples 2, 12, and 13, but the glitter of Examples 2, 12, and 13 was "good." . The reason why Examples 2, 12 and 13 are inferior to the other examples is that the amount of metal thin film particles in the activator is small in Example 2, resulting in a reduced luster effect. Nos. 12 and 13 are due to the fact that the maximum length of the metal thin film pieces was smaller than that of the metal thin film pieces of the other examples, and the brilliance (hologram effect) due to embossing was weak.
(3) Smoothness of topcoats used in examples of solvent-based surfactants Except for Examples 10, 11, 16 and 17, the smoothness of the topcoats was "excellent" or "good". In Examples 10, 11, 16, and 17, it was "acceptable", but it is inferior to other examples because the maximum length of the metal thin film pieces in the activator is longer than that of the metal thin film pieces of other examples. This is because the surface of the transferred decorative layer was uneven due to its large size, and the unevenness was reflected in the top coat, resulting in a decrease in smoothness.
(4) Adhesion of the Transfer Layer to the Article Except for Examples 7, 8, 10 to 16, the adhesion to the article was "excellent" or "good". In Examples 7, 8, 10 to 16, it was "acceptable", but it was inferior to the other examples because Examples 7 and 8 contained a large amount of metal thin film particles in the activator. This is because the maximum length of the metal thin film pieces in Examples 10 and 11 is large. Moreover, in Examples 12 to 16, in addition to the above reason, the metal thin film pieces do not have a resin layer, so the adhesion is lowered.

According to the present invention, as described above, the hydraulic transfer film does not include a material that imparts glitter to the decorative layer, and the glitter is added to the activator that activates the hydraulic transfer film during hydraulic transfer. Since the metal thin film piece material with an embossed surface having a imparting effect is contained, the hydraulic transfer film can be reliably swelled and extended, and the hydraulic transfer for obtaining the glittering decorative layer can be performed well.

In addition, unlike the case of having a metal layer for imparting glitter on the hydraulic transfer film side in the conventional technology, it does not require a step of forming cracks in advance, so the glitter decoration layer can be formed with high workability and economic efficiency. Obtainable.

Furthermore, since the metal thin film flake material with an embossed surface that imparts luster has a relatively low specific gravity, the sedimentation of the material after mixing this material with the main component of the activator is slow, and the work of stirring the activator is difficult. Stirring work may be unnecessary or only a little, and high workability and economic efficiency can be obtained. As already mentioned, this sedimentation prevention tendency is remarkably exhibited when a resin thin film is laminated on the metal thin film piece with an embossed surface.

Furthermore, since the metal thin film piece material 52 with an embossed surface is randomly dispersed in the activator 50, the directionality of visual recognition is indefinite, and the glitter can be visually recognized well from any direction.

According to the present invention, the material that imparts glitter to the decorative layer is contained in the activator instead of the hydraulic transfer film side, so that the drawbacks of providing the glitter imparting material on the hydraulic transfer side are eliminated. Workability and economy of transfer are improved, and it has high industrial applicability.

REFERENCE SIGNS LIST 10 article 20 hydraulic transfer film 21 water-soluble base film (carrier film)
20S supply source 20R supply roll 20T decorative layer (transfer layer)
21 Water-soluble base film (carrier film)
22 Extensible decorative layer 30 Hydraulic transfer tank 30W Water 40 Activator applicator 50 Activator 50A Dried and solidified activator 50B UV-cured activator 52, 52A to 52E Metal thin film piece material with embossed surface (metal thin film piece)
52M Metal thin film 52P Resin film 52e Emboss
60 top coat

Claims (6)

A hydraulic transfer film comprising a water-soluble base film and an extensible decorative layer formed on the water-soluble base film is placed on the water surface of a hydraulic transfer tank, and an article is pressed against the hydraulic transfer film to obtain the article. In the method of hydraulically transferring the decorative layer to the surface of the embossed surface-attached metal thin film piece material, the decorative layer of the hydraulic transfer film is swollen and extended using an activator containing the embossed surface-attached metal thin film piece material. The thin film piece material is adhered to the decoration layer and/or at least a part of the metal thin film piece material enters the decoration layer so that the decoration layer transferred by the metal thin film piece material with the embossed surface has glitter. A hydraulic transfer method that imparts 2. The hydraulic transfer method of claim 1, wherein the embossed surfaced metal film strip material comprises a resin film laminated to a metal film. 3. The hydraulic transfer method according to claim 1 or 2, wherein the metal thin film piece material with an embossed surface is 0.5 to 5 parts by weight with respect to 100 parts by weight of the components excluding the metal thin film piece material in the activator. Hydraulic transfer method contained. 4. The hydraulic transfer method according to any one of claims 1 to 3, wherein said metal thin film piece material with an embossed surface has a maximum surface length of 80 [mu]m or less in the longitudinal direction. 5. The hydraulic transfer method according to any one of claims 1 to 4, wherein said metal thin film platelet material with an embossed surface has a specific gravity of 1.0 to 2.0. 6. The hydraulic transfer method according to any one of claims 1 to 5, wherein the activator is a solvent type activator or an ultraviolet curable activator containing a photopolymerizable monomer that dissolves the decorative layer. Method.

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