JPH10180801A - In-mold decorative sheet and manufacture of in-mold decorated product using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an in-mold decorative sheet having uniformly a hologram pattern having durability in a gap part of a color pattern by a method wherein a foil on which a hologram layer is formed is used, and the hologram layer is transferred to the gap part in which a color pattern layer is not formed by a hot stamp method. SOLUTION: In a transfer sheet, a transfer layer composed of a peeling layer 2, a color pattern layer 3, a hologram layer 4, and an adhesion layer 5 is formed on one side of a substrate sheet 1. As material of the substrate sheet 1, a ressin sheet such as polypropylene resin, polyethylene resin, etc., a metal foil such as an aluminum foil, a copper foil, etc., a cellulose sheet such as glassine paper or the like, or a complex or the like of respective sheets are used. The peeling layer 2 is wholly or partially formed on the substrate sheet 1 or a releasing layer. As a method for forming the peeling layer 2, a gravure coat method, a roll coat method, etc., are used. The hologram layer 4 is formed by a hot stamp method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a painted sheet such as a transfer sheet or an insert sheet for producing a combined pattern of a hologram pattern and a color pattern on the surface of a molded article, and the production of a painted article using the same. About the method.

[0002]

2. Description of the Related Art Conventionally, there is a transfer method as one of the painting methods. The transfer method means that a release layer,
Using a transfer sheet on which a transfer layer consisting of a color pattern layer and an adhesive layer is formed, applying heat and pressure to adhere the transfer layer to the molded article, peeling the base sheet, and transferring the transfer layer to the molded article surface This is for painting. When the hologram pattern is exposed on the surface of the molded product in addition to the color pattern, the color pattern layer 3 and the partial metal thin film layer 7 are formed on the release layer 2 formed on one side of the base sheet 1 in the transfer sheet. Then, the entire surface was pressed using a roll 8 having a pattern of hologram information unevenness, thereby forming hologram information unevenness 9 on the portion where the metal thin film layer 7 was formed (see FIG. 8). A hologram represents light interference fringes by unevenness, and can express bright and various color changes such as rainbow colors.

[0003]

However, the color pattern 10 is a pattern having a gap portion, for example, a window portion 11 or an inter-pattern portion (see FIG. 9), and the metal thin film layer formed from the back surface is exposed in the gap portion. In the case where the hologram pattern 12 is formed by performing the above operation (see FIG. 10: 13 denotes a metal thin film forming portion), if the gap portion is extremely fine, the following problem occurs.

That is, when the roll 8 having the concave and convex mold of the hologram information is pressed, the concave and convex surface of the roll is blocked by the color pattern layer 3 and cannot enter the gap between the color patterns 3 as desired. 11). As a result, the press was incomplete as the color pattern layer was formed closer to the portion where the color pattern layer was formed in the gap, and the resulting hologram pattern was uneven.

In the prior art, in order to partially form a metal thin film layer, a metal thin film layer is formed on a water-soluble ink layer formed excluding a portion requiring a metal thin film layer,
Thereafter, a means of removing the water-soluble ink layer and the metal thin film layer thereon by water washing is used. However, there is a problem that the durability of the metal thin film layer is deteriorated with time since the metal thin film layer has undergone a washing step.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, and to provide a painted sheet having a durable hologram pattern evenly in a gap between colored patterns and the production of a painted article using the same. It is to provide a method.

[0007]

Means for Solving the Problems In order to achieve the above object, the painted sheet of the present invention is the same as the following claims.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic sectional view showing one embodiment of a transfer sheet according to the present invention, FIG. 2 is a schematic sectional view showing one embodiment of a process of forming a hologram layer of the transfer sheet according to the present invention, and FIG. FIG. 4 is a schematic cross-sectional view showing one embodiment of a hot stamp foil used in the present invention, FIG. 4 is a schematic cross-sectional view showing one embodiment of a picture-formed product according to the present invention, and FIG. 5 is one embodiment of an insert sheet according to the present invention. FIG. 6 is a schematic cross-sectional view showing one embodiment of a process for forming a hologram layer of an insert sheet according to the present invention, and FIG. 7 is a schematic cross-sectional view showing another embodiment of a picture-formed molded product according to the present invention. It is sectional drawing. In the figure, 1 is a base sheet, 2 is a release layer, 3 is a color pattern layer, 4 is a hologram layer, 41
Is an adhesive layer, 42 is a rear anchor layer, 43 is a metal thin film layer, 4
Numeral 4 is unevenness, 45 is a front anchor layer, 46 is a release layer, 47 is a base sheet, 48 is a hot stamp foil, 5 is an adhesive layer, 6
Indicates a molded product.

[0010] The painted sheet of the present invention includes a transfer sheet and an insert sheet. The transfer sheet is formed by forming a release layer 2 on one side of a base sheet 1 and then forming a color pattern layer 3.
After the hologram layer 4 and the like are formed and the painted sheet is adhered to the molded article, the base sheet 1 is peeled off. Further, the insert sheet is directly formed on the transparent base sheet 1.
After forming the color pattern layer 3, the hologram layer 4, etc., and adhering the painted sheet to the molded product, the base sheet 1 is not peeled off.

First, the transfer sheet will be described. FIG.
Has a release layer 2 on one side of a base sheet 1,
A transfer layer including a color pattern layer 3, a hologram layer 4, and an adhesive layer 5 is formed.

The base sheet 1 may be made of a polypropylene resin, a polyethylene resin, a polyamide resin,
Resin sheets such as polyester resin, acrylic resin and polyvinyl chloride resin, metal foil such as aluminum foil and copper foil, cellulosic sheets such as glassine paper, coated paper and cellophane, or composites of the above sheets ,
What is used as the base sheet 1 of a normal transfer sheet can be used.

In order to improve the releasability of the transfer layer from the base sheet 1, before providing the transfer layer on the base sheet 1,
The release layer may be formed entirely. The release layer is released from the transfer layer together with the base sheet 1 when the base sheet 1 is peeled off after the transfer or simultaneous transfer with molding. As the material of the release layer, a melamine resin-based release agent, a silicone resin-based release agent, a fluororesin-based release agent, a cellulose derivative-based release agent, a urea resin-based release agent, a polyolefin resin-based release agent,
Paraffin-based release agents, composite release agents thereof, and the like can be used. Examples of the method for forming the release layer include a gravure coating method, a roll coating method, a comma coating method, a reverse coating method, a coating method such as a lip coating method, and a printing method such as a gravure printing method and a screen printing method. The dry film thickness of the release layer is generally 1 to 6 μm.

The release layer 2 is formed entirely or partially on the base sheet 1 or on the release layer. The release layer 2
When the base sheet 1 is peeled off after transfer or simultaneous transfer with molding, the layer is peeled off from the base sheet 1 and becomes the outermost surface of the molded article. As a material of the release layer 2, an acrylic resin,
When using a copolymer such as a polyester resin, a polyvinyl chloride resin, a cellulose resin, a rubber resin, a polyurethane resin, a polyamide resin, a polyvinyl acetate resin, and a vinyl chloride-vinyl acetate copolymer resin. Good. When hardness is required for the release layer 2, a photo-curable resin such as an ultraviolet-curable resin, a radiation-curable resin such as an electron beam-curable resin, or a thermosetting resin may be selected and used. The release layer 2 made of a curable resin is uncured before transfer, and has a surface strength by irradiating an electron beam or ultraviolet light after transfer in order to prevent the occurrence of cracks at corners of the molded product. It may be. As a method of forming the release layer 2, a gravure coating method,
Roll coating, comma coating, reverse coating,
There are a coating method such as a lip coating method and a printing method such as a gravure printing method and a screen printing method. If the material is a curable resin, a coating method is used, otherwise, a printing method is used.
The dry film thickness of the release layer 2 is generally 1 to 6 μm when the material is a curable resin, and about 1 μm otherwise.

The material of the color pattern layer 3 may be a polyvinyl resin, a polyamide resin, a polyester resin, a polyacryl resin, a polyurethane resin, a polyvinyl acetal resin, a polyester urethane resin, a cellulose ester resin, an alkyd resin. It is preferable to use a colored ink containing a resin such as a binder and a pigment or dye of an appropriate color as a colorant. As a method for forming the color pattern layer 3, a normal printing method such as an offset printing method, a gravure printing method, and a screen printing method may be used.

The hologram layer 4 is formed by a hot stamping method (see FIG. 2). The hot stamping method uses a hot stamping foil 48 in which a hot stamping layer (hologram layer 4 in the present invention) is formed on one surface of a base sheet 47, and is heated and pressed to adhere the hot stamping layer to the surface of the hot stamped object. Thereafter, the base sheet 47 is peeled off, and the hot stamp layer is transferred to the surface of the hot stamped object.

Hereinafter, the hot stamp foil 48 used in the present invention will be described. The hot stamp foil 48 includes a release layer 46 on one side of a base sheet 47, a front anchor layer 45 having hologram information irregularities 44 on the surface, and a metal thin film layer 4.
3, a hologram layer 4 including a rear anchor layer 42, an adhesive layer 41, and the like are sequentially formed (see FIG. 3). In the case where the rear anchor layer 42 also has the function of the adhesive layer 41, the adhesive layer 41 can be omitted. When the front anchor layer 45 also has the function of the release layer 46, the release layer 46 can be omitted. Further, in order to improve the releasability of the hologram layer 4 from the base sheet 47, a release layer may be formed on the entire surface before the hologram layer 4 is provided on the base sheet 47.

The base sheet 47 of the hot stamp foil 48,
For the release layer, the release layer 46, and the adhesive layer 41, the release layer 4
Except that 6 does not use a curable resin, any of them can be the same as those used for the transfer sheet.

The front anchor layer 45 and the rear anchor layer 42
Examples of the material include two-component curable urethane resin, thermosetting urethane resin, melamine resin, cellulose ester resin, chlorine-containing rubber resin, chlorine-containing vinyl resin, polyacrylic resin, epoxy resin, and vinyl resin. It is preferable to use a polymer resin resin or the like. In particular, when a heat-resistant resin such as a thermosetting urethane resin, a melamine resin, an epoxy resin, or a vinyl copolymer resin is used for either the front anchor layer 45 or the rear anchor layer 46, a picture is formed in the mold. Even when the sheet is arranged and the painting is performed simultaneously with the injection molding, the irregularities 44 of the hologram information are not deformed by the heat of the injected molten resin. As a method of forming the front anchor layer 45 and the rear anchor layer 42, a coating method such as a gravure coating method, a roll coating method, a comma coating method, a reverse coating method, a lip coating method, a gravure printing method,
There are printing methods such as a screen printing method.

As a material of the metal thin film layer 43, a metal such as aluminum, nickel, chromium, and tin, or a metal compound such as titanium oxide, indium tin oxide, zinc oxide, silicon oxide, and zinc sulfide is used. The method for forming the metal thin film layer 43 includes a vacuum deposition method such as a sputtering method, an ion plating method, and a resistance heating method. The thickness of the metal thin film layer is generally set to 400 to 800 °.

In order to form the irregularities 44 of the hologram information, it is preferable to use a roll in which the pattern of the irregularities 44 of the hologram information is formed on the entire surface. A temperature of about 120 to 130 ° C. and a pressure of 2,000 kg / m 2 are passed through a hot stamp foil in the course of manufacturing in which the metal thin film layer 43 and the like are formed on such a roll.
By pressing under about ^two conditions, the unevenness 44 of the hologram information can be entirely formed. Alternatively, the order in which the unevenness 44 of the hologram information is formed and then the metal thin film layer 43 is formed on the uneven surface may be used.

Next, a method for forming the hologram layer 4 on the surface of the transfer sheet in the course of manufacture by the hot stamping method, using the hot stamping foil 48, on which the color pattern layer 3 is formed will be described. First, the hot stamp foil 48 is superimposed on the surface of the transfer sheet on which the color pattern layer 3 is formed so that the base sheet 47 side is the outer surface. Next, using a hot stamping device provided with an engraved part made of silicon rubber or brass, the engraved part set under the conditions of a temperature of about 140 to 160 ° C., 0.2 to 0.5 seconds, and a pressure of about 1000 kg / m ² was prepared. The hologram layer 4 is bonded to the gap of the transfer sheet where the color pattern layer 3 is not formed by applying a heat pressure 49 to a required portion of the hot stamp foil 48 from the base sheet 47 side. At this time, if the hologram layer 4 is provided so as to partially overlap with the color pattern layer 3, the hologram pattern can be reliably obtained even if the hot stamp position is slightly shifted. Finally, when the base sheet 48 of the hot stamp foil 48 is peeled off, peeling occurs at the interface between the base sheet 47 of the hot stamp foil 48 and the release layer 46, and the hot stamp is completed. When a release layer is provided on the base sheet 47 of the hot stamp foil 48, the base sheet 4 of the hot stamp foil 48 may be provided.
When peeling is performed, peeling occurs at the interface between the release layer and the release layer 46, and the hot stamping is completed. The hologram layer 4 may be formed to be smaller than the area of the gap of the color pattern layer 3, and the outer pattern may be a hologram pattern.

The hologram layer 4 thus obtained
Are an adhesive layer 41, a rear anchor layer 42, a metal thin film layer 43,
Irregularities 44 of hologram information are provided on the surface in contact with the metal thin film layer 43
The adhesive layer 41 is in contact with the release layer 2 of the transfer sheet. In the case where the rear anchor layer 42 also has the function of the adhesive layer 41, the adhesive layer 41 can be omitted. When the front anchor layer 45 also has the function of the release layer 46, the release layer 46 can be omitted.

The adhesive layer 5 of the transfer sheet is used to adhere the above-mentioned layers to the surface of the molded product, and when the adhesion between the color pattern layer 3 or the hologram layer 4 and the molded product is poor, the color pattern layer 3 and the An adhesive layer is formed on the hologram layer. Adhesive layer 5
Is formed on a portion to be bonded. That is, if the portion to be bonded is partial, the color pattern layer 3 and the hologram layer 4
The adhesive layer 5 is partially formed thereon. As the adhesive layer 5,
A heat-sensitive or pressure-sensitive resin suitable for the material of the molded article is appropriately used. When the material of the molded article is a polyacrylic resin, it is preferable to use a polyacrylic resin. The material of the molded product is polyphenylene oxide / polystyrene resin,
In the case of polycarbonate resin, styrene copolymer resin, and polystyrene blend resin, polyacrylic resin, polystyrene resin,
A polyamide resin or the like may be used. Further, when the material of the molded article is a polypropylene resin, chlorinated polyolefin resin, chlorinated ethylene-vinyl acetate copolymer resin, cyclized rubber, and coumarone indene resin can be used. As a method for forming the adhesive layer 5, a gravure coating method,
Roll coating, comma coating, reverse coating,
There are a coating method such as a lip coating method and a printing method such as a gravure printing method and a screen printing method. The dry thickness of the adhesive layer 5 is generally 1 to 5 μm. In addition, the color pattern layer 3
When the hologram layer 4 also has the function of the adhesive layer 5, the adhesive layer 5 can be omitted.

When a curable resin is used for the release layer 2 of the transfer sheet, before the color pattern layer 3 is provided on the release layer 2 in order to improve the adhesion between the release layer 2 and the color pattern layer 3. Then, an anchor layer may be formed entirely. As the material of the anchor layer, two-component cured urethane resin, thermosetting urethane resin, melamine resin, cellulose ester resin, chlorine-containing rubber resin, chlorine-containing vinyl resin, polyacrylic resin, epoxy resin, It is preferable to use a vinyl copolymer resin. Examples of the method for forming the anchor layer include a gravure coating method, a roll coating method, a comma coating method, a reverse coating method, a coating method such as a lip coating method, and a printing method such as a gravure printing method and a screen printing method.

Hereinafter, a method for painting a surface of a molded article by using the transfer method and using the transfer sheet having the above-described structure will be described. Molded products include resin molded products, rubber products,
Examples include metal products, wood products, glass products, ceramic products, and composite products made of various materials. The molded article may be transparent, translucent, or opaque. Further, the molded article may be colored or uncolored. As the resin, acrylic resin, polystyrene resin, polypropylene resin, polycarbonate resin, acrylonitrile polystyrene copolymer, acrylonitrile butadiene polystyrene copolymer resin, polyacetal resin, polyethylene resin, polyurethane resin and the like may be used. First, a transfer sheet is superimposed on the surface of the molded article such that the base sheet 1 side is the outer surface. Next, using a transfer machine such as a roll transfer machine or an up-down transfer machine equipped with a heat-resistant rubber-like elastic body, for example, silicone rubber, a heat-resistant set at a temperature of about 80 to 260 ° C. and a pressure of about 50 to 200 kg / m ^2. Heat and pressure are applied from the base sheet 1 side of the transfer sheet via the rubber-like elastic body. By doing so, the transfer layer adheres to the surface of the molded article 6. Finally,
When the base sheet 1 is peeled off after cooling, peeling occurs at the interface between the base sheet 1 and the release layer 2, and transfer is completed. In the case where a release layer is provided on the base sheet 1, when the base sheet 1 is peeled off, peeling occurs at a boundary surface between the release layer and the release layer 2, and transfer is completed.

Next, a method of painting a surface of a molded article by using the transfer sheet having the above-described structure and utilizing the simultaneous molding transfer method by injection molding will be described. First, the transfer sheet is fed into a molding die including a movable die and a fixed die. At this time, a single transfer sheet may be fed one by one, or a necessary portion of a long transfer sheet may be fed intermittently. When a long transfer sheet is used, a transfer device having a positioning mechanism is used to transfer the color pattern layer 3 of the transfer sheet.
In addition, it is preferable that the register between the hologram layer 4 and the molding die match. When the transfer sheet is intermittently fed, if the transfer sheet is fixed by the movable type and the fixed type after the position of the transfer sheet is detected by the sensor, the transfer sheet is always fixed at the same position. This is convenient because the color pattern layer 3 and the hologram layer 4 are not displaced. After closing the molding die, the molding resin in a molten state is injected and filled into the cavity from the gate provided in the fixed die, and the molded product 6 is obtained and simultaneously bonded to the transfer sheet. After cooling the molded product 6, the molding die is opened and the molded product is taken out. Finally, the transfer is completed by peeling the base sheet 1 (see FIG. 4).

Next, the insert sheet will be described. The insert sheet is formed by directly forming a color pattern layer 3, a hologram layer 4, and the like on one surface of a transparent base sheet 1 (see FIG. 5).

The base sheet 1 may be made of a polypropylene resin, a polyethylene resin, a polyamide resin,
What is used as a transparent base sheet 1 of a normal insert sheet, such as a resin sheet of a polyester resin, an acrylic resin, a polyvinyl chloride resin, or the like, can be used.

In the insert sheet, the same material as that of the transfer sheet can be used for the material of the color pattern layer 3, the hologram layer 4, and the adhesive layer 5 (see FIG. 6).

Further, a hard coat layer may be provided on the surface of the transparent base sheet 1 opposite to the surface on which the color pattern layer 3 and the hologram layer 4 are formed. As the material of the hard coat layer,
It is preferable to select and use a photocurable resin such as an ultraviolet curable resin, a radiation curable resin such as an electron beam curable resin, or a thermosetting resin. The hard coat layer may be uncured before molding and may have surface strength by irradiating it with an electron beam or ultraviolet rays after molding in order to prevent the occurrence of cracks at corners of the molded article. As a method of forming the hard coat layer, a coating method such as a gravure coating method, a roll coating method, a comma coating method, a reverse coating method, and a lip coating method is used.

Hereinafter, a method for painting a surface of a molded article using the insert sheet having the above-described structure and utilizing the insert molding method will be described. The insert molding method is performed in substantially the same manner as the simultaneous molding transfer method, but differs from the simultaneous molding transfer method in that the transparent base sheet 1 is not finally peeled off. First, an insert sheet is mounted in a molding die including a movable die and a fixed die. As a method of fixing the insert sheet in the mold, there is a method of charging the insert sheet and holding the insert sheet in the mold, or holding the insert sheet in the mold by suction under reduced pressure from a suction hole provided in the mold. After the molding die is closed, the molding resin in a molten state is injected and filled into the cavity from a gate provided in the fixed die, and the molded product is obtained and simultaneously bonded to the insert sheet. After cooling the molded product, the molding die is opened and the molded product is taken out (see FIG. 7).

[0034]

【Example】

Example 1 A release layer made of an acrylic melamine resin having a thickness of 2 μm was formed on one surface of a base sheet made of a long polyethylene terephthalate film having a thickness of 38 μm and a width of 650 mm by a gravure coating method. A release layer of urethane acrylate resin having a thickness of 5 μm was formed on the entire surface by lip coating, and an anchor layer of urethane resin having a thickness of 2 μm was entirely formed on the release layer by gravure printing. Next, a color pattern layer containing a colorant in an acrylic vinyl resin having a thickness of 3 μm was formed into a pattern having an extremely fine window by a gravure printing method. Next, a hologram layer partially overlapping with the color pattern layer is formed by hot stamping on the window where the color pattern layer is not formed, and then the thickness is reduced to 1 by a gravure printing method.
An adhesive layer made of a μm acrylic resin was formed on the entire surface to obtain a transfer sheet.

The hot stamping foil used in the hot stamping method is a release sheet made of an acrylic melamine resin having a thickness of 2 μm by a gravure coating method on one side of a base sheet made of a long polyethylene terephthalate film having a thickness of 19 μm and a width of 650 mm. A layer was formed, and a release layer made of an acrylic resin having a thickness of 1 μm and a front anchor layer made of a urethane resin having a thickness of 1 μm were formed on the entire surface by gravure printing. Next, a metal thin film layer made of aluminum having a thickness of 600 ° is formed by a vacuum evaporation method.
The hologram information is formed on the surface of the front anchor layer and the metal thin film layer by hot-pressing with a press roll having a hologram information unevenness pattern of kg / m ² and a roll temperature of 120 to 130 ° C., and the hologram information unevenness is formed thereon. This was obtained by forming a whole anchor layer made of a vinyl resin having a thickness of 1 μm and an adhesive layer made of an acrylic resin having a thickness of 2 μm by gravure printing.

The hot stamping is performed by using an up-down type hot stamping device provided with an engraved portion made of silicon rubber at a pressure of 1000 kg / m ² and a temperature of 150 kg.
C. for 0.2 seconds.

This transfer sheet is placed in a mold, and
The cavity was injected and filled with a molten acrylic resin at a temperature of ° C., and at the same time as a molded article was obtained, a transfer sheet was adhered to the surface of the molded article.

The molded article with pictures obtained in this manner had a durable hologram pattern evenly in the gap between the color patterns.

Example 2 On one surface of a base sheet made of a long polyethylene terephthalate film having a thickness of 38 μm and a width of 650 mm, a very fine color pattern layer containing a coloring agent in an acrylic vinyl resin having a thickness of 5 μm was formed by gravure printing. After forming a hologram layer that partially overlaps the color pattern layer by hot stamping in the pattern where the color pattern layer is not formed, the thickness is formed by gravure printing. An adhesive layer made of an acrylic resin having a thickness of 2 μm was entirely formed to obtain an insert sheet.

The hot stamp foil used in the hot stamping method is a mold release sheet made of an acrylic melamine resin having a thickness of 2 μm by a gravure coating method on one side of a base sheet made of a long polyethylene terephthalate film having a thickness of 19 μm and a width of 650 mm. A layer and a release layer made of an acrylic resin having a thickness of 1 μm are formed on the entire surface, and a front anchor layer made of a urethane resin having a thickness of 1 μm is formed on the release layer by a gravure printing method, at a pressure of 2000 kg / m ² and a roll temperature of 12.
The unevenness of the hologram information is formed on the surface of the front anchor layer by hot-pressing with a press roll having a hologram information unevenness mold of 0 to 130 ° C., and 600 μm thick aluminum is formed thereon by vacuum evaporation. After forming a metal thin film layer along the uneven surface, an anchor layer made of vinyl resin having a thickness of 1 μm and an adhesive layer made of acrylic resin having a thickness of 2 μm are entirely formed thereon by gravure printing. Was.

The hot stamp is performed by using an up-down type hot stamping device provided with a stamped portion made of silicon rubber, at a pressure of 1000 kg / m ² and a temperature of 130 kg.
C. for 0.3 seconds.

This insert sheet is placed in a mold,
The cavity was injected and filled with a molten acrylic resin at 240 ° C. to obtain a molded product, and at the same time, an insert sheet was adhered to the surface of the molded product.

The molded article with pictures obtained in this manner had a durable hologram pattern evenly in the gaps between the color patterns.

[0044]

The painting sheet of the present invention and the method for producing a painting molded article using the same have the following effects because they have the above-mentioned construction.

That is, the hologram layer was transferred to the gap where the color pattern layer was not formed by the hot stamping method using a hot stamp foil in which a hologram layer for forming a hologram without unevenness was formed in advance. Therefore, the hologram pattern of the painted sheet does not become uneven even when the gap is very fine.

Further, since the hologram pattern is obtained by hot stamping only the necessary portions, the painted sheet does not undergo a washing step, and the durability of the hologram pattern does not deteriorate with time.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing one embodiment of a transfer sheet according to the present invention.

FIG. 2 is a schematic cross-sectional view showing one embodiment of a process for forming a hologram pattern of a transfer sheet according to the present invention.

FIG. 3 is a schematic cross-sectional view showing one embodiment of a hot stamp foil used in the present invention.

FIG. 4 is a schematic sectional view showing one embodiment of a molded article with pictures according to the present invention.

FIG. 5 is a schematic sectional view showing one embodiment of an insert sheet according to the present invention.

FIG. 6 is a schematic cross-sectional view showing one embodiment of a process of forming a hologram pattern of an insert sheet according to the present invention.

FIG. 7 is a schematic sectional view showing another embodiment of a picture-formed molded product according to the present invention.

FIG. 8 is a schematic cross-sectional view showing a step of forming a hologram pattern of a conventional transfer sheet.

FIG. 9 is a diagram showing one embodiment of a color pattern.

FIG. 10 is a view showing one embodiment of a combination pattern in which a hologram pattern is present in an ultrafine window of a color pattern.

FIG. 11 is a schematic cross-sectional view showing a step of forming a hologram pattern of a conventional transfer sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base sheet 2 Release layer 3 Color pattern layer 4 Hologram layer 41 Adhesive layer 42 Back anchor layer 43 Metal thin film layer 44 Irregularities of hologram information 45 Front anchor layer 46 Release layer 47 Base sheet 48 Hot stamp foil 5 Adhesive layer 6 Molded article 7 Metal thin film layer 8 Roll with hologram information uneven pattern 9 Hologram information unevenness 10 Color pattern 11 Window 12 Hologram pattern 13 Metal thin film forming section

Claims (9)

[Claims] 1. A color pattern layer having a gap is formed on a release layer formed on one surface of a base sheet, and a hologram layer is formed by a hot stamping method in a gap where no color pattern layer is formed. A sheet with a feature. 2. The method according to claim 1, wherein the hologram layer comprises at least a rear anchor layer, a metal thin film layer, and a front anchor layer having hologram information irregularities on a surface in contact with the metal thin film layer, and the rear anchor layer side of the hologram layer is in contact with the release layer. Item 2. A sheet with a picture according to Item 1. 3. The painted sheet according to claim 2, wherein the front anchor layer or the rear anchor layer is a heat-resistant resin. 4. The painted sheet according to claim 1 or 2 is superimposed on the surface of the molded article, and heat and pressure are applied from the base sheet side to adhere the painted sheet to the surface of the molded article. A method for producing a molded article with a picture, characterized by peeling. 5. The method according to claim 1, wherein the painted sheet according to any one of claims 1 to 3 is placed in a mold, the molded resin is injection-molded, the painted sheet is adhered to the surface of the molded article, and then the base sheet is peeled off. Method for producing a molded article with a picture. 6. A picture substrate characterized in that a color pattern layer having a gap is formed on one surface of a transparent base sheet, and a hologram layer is formed by a hot stamping method in a gap where no color pattern layer is formed. Sheet. 7. The hologram layer is composed of at least a rear anchor layer, a metal thin film layer, and a front anchor layer having hologram information irregularities on a surface in contact with the metal thin film layer, and the rear anchor layer side of the hologram layer is in contact with the base sheet. Item 6. A picture sheet according to Item 6. 8. The painted sheet according to claim 7, wherein the front anchor layer or the rear anchor layer is a heat-resistant resin. 9. A method of manufacturing a picture-formed article, comprising: placing the picture-coated sheet according to claim 6 in a mold, injecting molding resin, and simultaneously adhering the picture-sheet to the surface of the molded article. Method.