JP2011194589A - Decorating method, decorating system and method of manufacturing ornament - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new method for decorating a surface to be decorated of a three dimensional structure by hot stamping.SOLUTION: The method for decorating the surface 4 to be decorated having the three dimensional structure in a base material 2 by hot stamping with the usage of an AG pad 17 for a three dimensional surface having a soft pressing surface 171 and a heating part 173 for heating the pressing surface 171 therein includes an undercoat layer forming step for interposing an undercoat layer 19 between the AG pad 17 and the surface to be decorated 4 of the base material 2, pressing the undercoat layer 19 to the surface to be decorated 4 by the AG pad 17, and laminating the undercoat layer 19 on the surface to be decorated 4; and a decorative layer forming step for interposing a decorative layer 29 between the AG pad 17 and the undercoat layer 19, pressing the decorative layer 29 to the undercoat layer 19 by the AG pad 17 and laminating the decorative layer 29 on the undercoat layer 19.

Description

  The present invention relates to a decoration method, a decoration system, and a method for manufacturing a decorative article. More specifically, a method (decoration method) for decorating an article to be decorated having a three-dimensional structure such as unevenness or curved surface by a hot stamping technique, a decoration system suitable for execution of this decoration method, and decoration The present invention relates to a method for manufacturing an ornament using the method.

Conventionally, decoration by hot stamping has been applied to a flat decorative surface of an article.
Decoration on a flat decorative surface is performed as follows. First, an undercoat layer is formed on a flat surface to be decorated. This undercoat layer is intended to improve the adhesion between the surface to be decorated and the transfer film, and contains an adhesive material component. This undercoat layer was formed by applying an adhesive material to a flat surface to be decorated.
Next, a transfer film having a desired pattern and color is placed on the undercoat layer, and the heated pad is pressed against it. Thereby, the heated part in a transfer film is transcribe | transferred to the to-be-decorated surface of articles | goods, and this to-be-decorated surface is decorated. Then, a protective film (overcoat layer) is laminated | stacked on the to-be-decorated surface as needed.

As described above, hot stamping is generally applied to a flat decorative surface. Recently, a technology for decorating a surface having a three-dimensional structure such as irregularities and curved surfaces as a decorative surface is used. Has been proposed (see Patent Document 1 and Patent Document 2).
The hot stamp pad described in Patent Document 1 incorporates a flexible pressing surface and a heating section for heating the pressing surface (hereinafter referred to as “AG pad” in this specification). When such an AG pad is pressed against the decorative surface having a three-dimensional structure, the flexible pressing surface is deformed along the decorative surface, and a pressing force is uniformly applied thereto. Furthermore, since the temperature of the pressing surface is always maintained at a favorable temperature by the heating unit, the transfer film can be evenly and stably transferred to the surface to be decorated having a three-dimensional structure.
A transfer film suitable for such an AG pad is introduced in Patent Document 2. If this transfer film is used, an undercoat layer becomes unnecessary.

JP 2009-61662 A JP 2008-162122 A

If the transfer film described in Patent Document 2 is applied to the AG pad described in Patent Document 1, preparation of the undercoat layer on the surface to be decorated is omitted, so the number of work steps is reduced and the throughput of the decorative product production is reduced. improves. The provider of the AG pad uses this transfer film as a standard specification for the AG pad.
However, since the transfer film has a multi-layer structure, the manufacturing cost increases, and the decorative article becomes expensive.
Therefore, the present inventors apply a general-purpose and inexpensive transfer film (used to transfer a flat decorative surface) to the AG pad, and decorate the decorative surface with a three-dimensional structure by hot stamping. Have been considering.
First, as in the prior art, an adhesive material as an undercoat layer material was applied to the decorative surface having a three-dimensional structure, and a general-purpose transfer film was pressure-bonded with an AG pad. Even with such a hot stamping method, the transfer film could be evenly transferred onto the decorative surface having a three-dimensional structure, but the yield was extremely poor.
As the reason, it was considered that the surface to be decorated has a three-dimensional structure, so that the film thickness of the undercoat layer becomes non-uniform. Therefore, various adjustments were made to the material of the undercoat layer, the coating method, the drying conditions, etc., but the yield could not be improved.

The present inventors have intensively studied to solve the above problems.
At one point, I came up with the idea of using an AG pad to form an undercoat layer. According to the AG pad, the surface to be decorated having a three-dimensional structure can be pressed evenly, so that the layer thickness of the adhesive material (that is, the undercoat layer) existing between the AG pad and the surface to be decorated can be easily controlled.
When an undercoat layer formed using an AG pad was used as a base, and hot stamping was performed using a combination of an AG pad and a general-purpose transfer film, the transfer film was uniformly and constantly stable with a three-dimensional structure. I was able to transfer it to the decorative surface.

The present invention has been made based on the above findings found by the present inventors, and the first aspect thereof is defined as follows.
A decoration method for decorating a decorative surface having a three-dimensional structure on a base material with a hot stamp using a flexible pressing surface and a three-dimensional surface AG pad incorporating a heating unit for heating the pressing surface. ,
An undercoat layer is interposed between the AG pad and the surface to be decorated of the base material, and the undercoat layer is pressed against the surface to be decorated with the AG pad to laminate the undercoat layer on the surface to be decorated. An undercoat layer forming step;
A decorative layer is interposed between the AG pad and the undercoat layer, and the decorative layer is laminated on the undercoat layer by pressing the decorative layer against the undercoat layer with the AG pad. A layer forming step;
Decoration method including.

According to the decorating method of the first aspect of the present invention defined as described above, a suitable undercoat layer can be easily and reliably formed on the surface to be decorated having a three-dimensional structure. Thereby, the adhesive force of the transfer film is uniform and stable over the entire area. As a result, the throughput of the decoration work on the decoration surface is improved.
Furthermore, the adhesion of the transfer film to the surface to be decorated is stabilized (via the undercoat layer), so the transfer conditions (AG pad temperature and pressure, etc.) of the transfer film are relaxed, and the transfer film is prevented from being denatured. Is done.

The second aspect of the present invention is defined as follows. That is,
In the decoration method defined in the first aspect, when the undercoat layer is pressed against the surface to be decorated, the undercoat layer forming step is configured such that the AG pad side surface of the undercoat layer is the surface to be decorated. Drying from the surface on the side promotes peeling of the undercoat layer from the AG pad.
One condition that a favorable undercoat layer should have for a three-dimensional structure to be decorated is that the surface on the AG pad side in the undercoat layer is heated and dried, making it easy to peel off from the AG pad. It is done. If the adhesion of the undercoat layer to the AG pad is high, the undercoat layer follows the AG pad when the AG pad is separated from the surface to be decorated, and the formation of the undercoat layer becomes unstable.
In the undercoat layer, the surface on the surface to be decorated avoids drying and maintains its adhesion. Therefore, it is preferable to maintain the temperature of the AG pad side surface higher than the surface temperature of the surface to be decorated in the undercoat layer as in the second aspect. This is because the higher the temperature is, the more the solvent is volatilized from the molding material of the undercoat, resulting in a dry state, and the adhesiveness is lowered.
In the undercoat layer, it is needless to say that the surface on the surface to be decorated should be prevented from being excessively dried even before being pressed by the AG pad in order to ensure adhesion to the surface to be decorated.

  The present inventors are also considering laminating an undercoat layer using a conventional flexible pad that has a flexible pressing surface but does not include a heating portion. An undercoat layer can be formed on the surface to be decorated by applying an adhesive material to the flexible pad and pressing it onto the surface to be decorated having a three-dimensional structure. However, in this case, the adhesive material layer (precursor of the undercoat layer) formed on the surface of the flexible pad is dried from the surface (surface on the surface to be decorated) side, and the adhesion to the surface to be decorated decreases. On the other hand, it was difficult to obtain sufficient peelability between the flexible pad and the adhesive material layer.

The third aspect of the present invention is defined as follows. That is,
In the decoration method according to the first or second aspect, an overcoat layer is interposed between the AG pad and the surface to be decorated, and the overcoat layer is pressed onto the decoration layer with the AG pad. And an overcoat forming step of laminating the overcoat layer on the decorative layer.
According to the decorating method of the third aspect of the present invention defined as described above, the overcoat layer is also formed by the AG pad, so that the film thickness can be easily maintained uniformly. As a result, a high-quality decorative layer can be formed as a whole.

The fourth aspect of the present invention is defined as follows. That is,
A first device for a three-dimensional surface including a transfer device that transfers a substrate having a three-dimensional structure to be decorated, a flexible first pressing surface, and a first heating unit that heats the first pressing surface. A first hot stamping device comprising an AG pad;
A second hot stamping device comprising a flexible second pressing surface and a second AG pad for a three-dimensional surface incorporating a second heating unit for heating the second pressing surface; A system,
The undercoat layer interposed between the first AG pad and the decorated surface of the base material is laminated on the decorated surface by the first AG pad of the first hot stamping device,
A decorative layer interposed between the second AG pad and the undercoat layer is laminated on the undercoat layer by the second AG pad of the second hot stamp device. Decorating system.
According to the decoration system of the 4th aspect of this invention prescribed | regulated in this way, the effect | action similar to the 1st aspect of this invention is show | played.

The fifth aspect of the present invention is defined as follows. That is,
In the decorative system defined in the fourth aspect described above, the first AG pad includes a heating control unit that controls a heating amount of the first heating unit, and the undercoat layer is applied to the surface to be decorated. When pressing, the undercoat layer maintains the surface temperature on the first AG pad side higher than the surface temperature on the surface to be decorated, and promotes the peeling of the undercoat layer from the first AG pad. .
According to the decoration system of the 5th aspect of this invention prescribed | regulated in this way, the effect | action similar to the 2nd aspect of this invention is show | played.

The sixth aspect of the present invention is defined as follows. That is,
In the decorative system defined in the fourth or fifth aspect described above, the third for a three-dimensional surface including a flexible third pressing surface and a third heating unit for heating the third pressing surface. A third hot stamping device comprising an AG pad,
An overcoat layer interposed between the third AG pad and the decorative layer is laminated on the decorative material layer by the third AG pad of the third hot stamp device.
According to the decoration system of the 6th aspect of this invention prescribed | regulated in this way, the effect | action similar to the 3rd aspect of this invention is show | played.

The seventh aspect of the present invention is defined as follows. That is,
Providing the substrate;
A decoration method comprising: the decoration method according to any one of the first aspect to the third aspect.
According to the decoration method prescribed | regulated in the 1st aspect-the 3rd aspect, the through-put of decoration surface creation improves. Therefore, according to the method for manufacturing a decorative article to which such a decoration method is applied, the decorative article can be formed at a low cost.

It is a top view which shows the structure of the decoration system of embodiment of this invention. It is a front view which shows the structure of a 1st hot stamp apparatus. The lamination | stacking method of an undercoat layer is shown. The lamination | stacking method of a decoration layer is shown. The lamination method of an overcoat layer is shown.

Next, an embodiment of the present invention will be described.
Drawing 1 is a top view of decoration system 1 of an embodiment. The decoration system 1 includes a turntable 3 as a transfer device for a workpiece (base body) 2 to be decorated, and three hot stamp devices 10 and 20 that are equally distributed around the periphery of the turntable 3. And 30. The workpiece 2 includes a decorated surface 4 having a curved surface (three-dimensional structure). Although the material of the workpiece 2 is not particularly limited, resin, ceramic, metal, or the like can be used.
In FIG. 1, the turntable 3 rotates intermittently in the clockwise direction. A work 2 is detachably fixed to the upper surface of the turntable 3.

  The first hot stamping apparatus 10 includes a casing unit 11, a support unit 13, a pad driving unit 15, and an AG pad 17. The housing part 11, the support part 13, and the pad driving part 15 have a general-purpose configuration. As shown in FIG. 3, the AG pad 17 includes a flexible pressing surface 171, a heating unit 173 that heats the pressing surface 171, and a heating control unit 175 that controls the amount of heat generated by the heating unit 173. Refer to Patent Document 1 for details.

An undercoat layer 19 is laminated on the pressing surface 171 of the AG pad 17. In this example, an organic adhesive material (specifically: acrylic clear ink (thermosetting type)) is used as the material of the undercoat layer 19. The material of the undercoat layer 19 and its film thickness can be arbitrarily selected depending on the material of the workpiece 2, the material of the transfer film to be laminated next, and the use of a decorative product.
A method of laminating the undercoat layer 19 on the pressing surface 171 can be arbitrarily selected. In this example, the undercoat layer 19 was formed by applying an organic adhesive material to the pressing surface 171. As a coating method, brush coating, spraying, a method of dipping the pressing surface into the organic adhesive material reservoir, or the like can be employed. The undercoat layer 19 can be laminated on the pressing surface 171 by previously forming the undercoat layer 19 into a sheet shape and applying the pressing surface 171 to the sheet.

In the state where the adhesive material is applied to the pressing surface 171, in this example, the heating control unit 175 controls the amount of heat generated by the heating unit 173, and the temperature of the pressing surface 171 is set to 40 to 60 ° C. If this temperature is maintained for 1 second, a predetermined amount of solvent volatilizes from the adhesive material, whereby the adhesive material becomes a film and becomes the undercoat layer 19. Under such temperature and time conditions, the undercoat layer 19 when pressed against the workpiece 2 has a higher temperature on the back surface (surface on the AG pad 17 side) than the temperature on the surface (surface on the work 2 side). Adhesiveness is maintained on the side, and adhesiveness is reduced on the back surface side so that it is easily peeled off.
In the examination by the present inventors, an adhesive material is applied to a flexible pad (the heating pad 173 and heating controller 175 in the AG pad in FIG. 3 are omitted) to form an undercoat layer 19, which is used as a decoration of the workpiece 2 The pressing to the surface 4 is performed. In this case, from the viewpoint of improving work efficiency, it is necessary to blow hot air to the applied adhesive material to shorten the film formation time (this is also the case when an undercoat layer is formed on a flat decorative surface. Is done). When heat is applied from the outside in this way, in the filmed undercoat layer 19, the temperature on the front surface side is high and overdried, and the adhesiveness is lowered. On the other hand, the backside is in an insufficiently dried state. The peelability to the flexible pad became insufficient.

The workpiece 2 on which the undercoat layer 19 is laminated is sent to the second hot stamp apparatus 20. The second hot stamp device 20 has the same configuration as the first hot stamp device 10. In the second hot stamping apparatus 20, as shown in FIG. 4, a decoration layer is laminated on the undercoat layer 19 on the surface to be decorated 4 of the work 2. As this decorative layer, a transfer film 29 generally used for hot stamping can be used. In this example, a vapor deposition film was used as the transfer film 29. The hot stamping conditions were such that the temperature of the pressing surface 171 was 180 ° C. and the pressing time was 2 seconds.
Of course, the hot stamping conditions can be appropriately selected according to the material of the transfer film 29, the use of the workpiece 2, and the like.
In FIG. 1, reference numeral 21 denotes a transfer film 29 supply device.
As the decorative layer, a pigment foil or a gravure foil can be used instead of the transfer film 29.

The workpiece 2 to which the transfer film 29 has been transferred is sent to the third hot stamp device 30. The third hot stamp device 30 has the same configuration as the first hot stamp device 10. In the third hot stamp apparatus 30, as shown in FIG. 5, an overcoat layer 31 is laminated on the decorative layer 29 on the surface to be decorated 4 of the workpiece 2. In this embodiment, the overcoat layer 31 is made of material: polyacetal clear ink (UV curable type). The material dissolved in the solvent is applied to the pressing surface 17, and the solvent is volatilized to form a film to form the overcoat layer 31. The temperature of the pressing surface 171 at this time was 50 ° C. After that, the overcoat layer 31 was laminated on the decorative layer 29 by pressing against the work 2 for 2 seconds while maintaining this temperature. Thereafter, the overcoat layer 31 is cured by irradiating UV.
The material of the overcoat layer 31 can be appropriately selected depending on the material of the decorative layer 29 and the intended use of the decorative product. The conditions for hot stamping the overcoat layer 31 can also be appropriately selected according to the material and the intended use of the decorative article.
When the transfer film has a protective layer, the third hot stamp device 30 is not necessary.

The present invention is not limited to the description of the embodiments and examples of the invention described above. Various modifications may be included in the present invention as long as those skilled in the art can easily conceive without departing from the description of the scope of claims.
The contents of papers, published patent gazettes, patent gazettes, and the like specified in this specification are incorporated by reference in their entirety.

DESCRIPTION OF SYMBOLS 1 Decorating system 2 Work 3 Turntable 4 Decorated surface 10, 20, 30 Hot stamp apparatus 17 AG pad 171 Pressing surface 173 Heating part 19 Undercoat layer 29 Decorating layer (transfer film)
31 Overcoat layer

Claims (7)

A decoration method for decorating a decorative surface having a three-dimensional structure on a base material with a hot stamp using a flexible pressing surface and a three-dimensional surface AG pad incorporating a heating unit for heating the pressing surface. ,
An undercoat layer is interposed between the AG pad and the surface to be decorated of the base material, and the undercoat layer is pressed against the surface to be decorated with the AG pad to laminate the undercoat layer on the surface to be decorated. An undercoat layer forming step;
A decorative layer is interposed between the AG pad and the undercoat layer, and the decorative layer is laminated on the undercoat layer by pressing the decorative layer against the undercoat layer with the AG pad. A layer forming step;
Decoration method including.   In the undercoat layer forming step, when the undercoat layer is pressed against the surface to be decorated, the AG pad side surface in the undercoat layer is dried from the surface on the surface to be decorated, so that the AG pad The decoration method according to claim 1, wherein peeling of the undercoat layer is promoted.   An overcoat layer is interposed between the AG pad and the surface to be decorated, and the overcoat layer is pressed onto the decorative layer with the AG pad, and the overcoat layer is laminated on the decorative layer. The decoration method according to claim 1, further comprising an overcoat forming step. A first device for a three-dimensional surface including a transfer device that transfers a substrate having a three-dimensional structure to be decorated, a flexible first pressing surface, and a first heating unit that heats the first pressing surface. A first hot stamping device comprising an AG pad;
A second hot stamping device comprising a flexible second pressing surface and a second AG pad for a three-dimensional surface incorporating a second heating unit for heating the second pressing surface; A system,
The undercoat layer interposed between the first AG pad and the decorated surface of the base material is laminated on the decorated surface by the first AG pad of the first hot stamping device,
A decorative layer interposed between the second AG pad and the undercoat layer is laminated on the undercoat layer by the second AG pad of the second hot stamp device. Decorating system.   The first AG pad includes a heating control unit that controls a heating amount of the first heating unit, and when the undercoat layer is pressed against the surface to be decorated, the first AG pad includes the first AG pad in the undercoat layer. The decoration system according to claim 4, wherein the surface temperature on the pad side is maintained higher than the surface temperature on the surface to be decorated to promote peeling of the undercoat layer from the first AG pad. . A third hot stamping device including a third AG pad for a three-dimensional surface, which includes a flexible third pressing surface and a third heating unit for heating the third pressing surface;
An overcoat layer interposed between the third AG pad and the decorative layer is laminated on the decorative material layer by the third AG pad of the third hot stamp device. The decoration system according to claim 4 or 5. Providing the substrate;
A method for producing a decorative article, comprising the decoration method according to any one of claims 1 to 3.

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