JP3145421B2 - Partial unevenness image display and partial unevenness image forming method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partial uneven image display having a partial uneven image in which the same surface is constituted by an uneven portion and a smoothed transfer or coloring image, and a method for displaying such a partial uneven image. It relates to a method of forming.

[0002]

2. Description of the Related Art
Embossed, sand-blasted film with unevenness given a required pattern by various methods,
It is used in various fields such as decorative films. However, if an image is to be directly placed on the uneven surface, the image follows the unevenness, and the texture is significantly inferior to that when the image is placed on a smooth surface.

For example, in order to form a metal vapor deposition image on an uneven surface, a conventional technique for forming a metal vapor deposition image, such as an etching method and a peeling development method, is disclosed in JP-B-56-13305 and JP-B-56-20533. Etc.), it is necessary to vapor-deposit metal directly on the concave / convex screen, but in this case, the metal vapor deposition also has a concave-convex shape, so that the metallic luster is lost. Also,
In the peeling development method, the metal deposition layer cannot be peeled uniformly, and partially remains on the uneven surface even after peeling. Further, a method of providing a metal deposition layer on a solvent-soluble undercoat layer (Japanese Patent Laid-Open No.
In Japanese Patent Application Laid-Open No. 76683/1993, a flat and glossy metal deposition layer can be obtained by providing an undercoat layer in the case of extremely shallow unevenness, but when the unevenness becomes deeper, the unevenness can be filled with the undercoat layer. It becomes difficult, and the metal deposition layer is no longer flat and glossy, and it is not possible to obtain sufficient design.

[0004] In addition, the same applies to the case where a colored image is formed on the uneven surface by screen printing or the like. When the unevenness such as an embossed film becomes deep, the colored image itself also becomes uneven, and the texture of the colored image is remarkably inferior. turn into. SUMMARY OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and has as its object to provide a highly designed image display having a smooth transfer or colored image portion on an uneven surface.
Still another object of the present invention is to provide a method for forming a partial uneven image having an uneven portion and a smooth transfer or colored image portion on the same surface by a dry process.

[0005]

According to the present invention, there is provided a partially uneven image display object according to the present invention in which one surface includes an uneven portion and a smoothed transfer image portion or colored image portion. The method for forming a partial uneven image according to the present invention includes a method for forming a partial uneven image formed by sequentially laminating a photocurable resin layer and a light transmitting member on a substrate having an uneven shape. After the original is overlaid on the flexible member and exposed, and only the exposed portion of the photocurable resin layer is cured into an uneven shape corresponding to the substrate, the substrate is peeled off, and a transfer layer is further formed on the photocurable resin layer. After stacking the transfer layer of the transfer member having, the entire surface is exposed through a light transmissive member, and the transfer member is peeled off. Forming a partial uneven image having a landing image . Further, in the method for forming a partially uneven image according to the present invention, an original is superposed and exposed on a light transmitting member of a partially uneven image forming material formed by sequentially laminating a photocurable resin layer and a light transmitting member on a substrate having an uneven shape. Then, after only the exposed portion of the photocurable resin layer is cured into an uneven shape corresponding to the substrate, the substrate is peeled off, and the colored powder is toned on the photocurable resin layer and fixed to the unexposed portion. After removing the excess colored powder, the entire surface is exposed through a light-transmissive member as necessary to obtain a partially uneven image having a colored image smoothed by the colored powder in a portion other than the portion having the uneven shape. To form.

Hereinafter, the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the partially uneven image display material of the present invention has at least a part
Transferred image portion or colored image portion 31b
The portion where the partial uneven image is formed is made of a photo-curable resin, and the uneven portion 31a has an uneven shape formed of a partial uneven image forming material described in detail later. The transfer image portion or the color image portion 31b is a portion which is colored and smoothed by a transfer member or a coloring powder. The article 3 may be a sheet-like material as shown, or may be a sheet-like material made of a photocurable resin adhered to the surface of another article.

Next, as shown in FIG. 2, a partially uneven image forming material 10 used in the partially uneven image forming method of the present invention comprises a substrate 11 having at least one surface having an uneven shape, a photocurable resin layer 12. And a light transmitting member 13 are sequentially laminated. The base material 11 is provided with irregularities by sandblasting or the like at least at a portion where the photo-curable resin layer 12 is laminated, and has an appropriate release property. Although the material is not particularly limited , examples thereof include a polyvinyl chloride film, a polyethylene terephthalate film, an acetate film, and a glass plate . In some cases, release properties can be imparted by a release agent or the like.

The photocurable resin layer 12 generally contains a photopolymerizable compound, that is, a polymer, oligomer, or monomer having a radical polymerizable double bond, and a photopolymerization initiator or a sensitizer. It contains a non-reactive organic polymer binder, a thermal polymerization inhibitor and other additives as necessary.
Particularly preferred photopolymerizable compounds for the purpose of the present invention are methacrylic acid, methyl methacrylate, butyl methacrylate, methacrylic acid esters such as 2-hydroxyethyl methacrylate, styrene, N-vinylpyrrolidone, acrylonitrile, tetraethylene glycol diacrylate, polyethylene glycol Diacrylate, 1,6
-Low molecular weight photopolymerizable compounds such as hexanediol diacrylate, neopentyl glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, or high molecular weight compounds such as urethane acrylate, epoxy acrylate, polyester acrylate, and unsaturated polyester. It is a photopolymerizable compound, and one or more of these can be used.

As the photopolymerization initiator, benzophenone,
Benzophenones such as 3,3-dimethyl-4-methoxybenzophenone, benzoins such as benzoin isopropyl ether and benzyldimethyl ketal, thioxanthones such as 2-chlorothioxanthone and 2,4-diethylthioxanthone, 2-hydroxy -2-methyl-1-
One or more conventionally known photopolymerization initiators such as acetophenones such as phenylpropan-1-one and 1-hydroxycyclohexylphenyl ketone can be used.

The organic polymer binder is a non-reactive polymer which is thermoplastic and has excellent compatibility with the photopolymerizable compound. Examples thereof include polyvinyl chloride, polymethacrylic acid, polyvinyl ether and polymethacrylate. , Polyamide, urethane resin, epoxy resin and the like can be used. Hydroquinone, P-methoxyphenol, and the like can be used as the thermal polymerization inhibitor.

Further, dyes and pigments which do not inhibit photocuring can be added as additives. As the light transmitting member 13, a film or a sheet is used depending on the use, and examples thereof include polyethylene terephthalate, acetate, polyvinyl chloride, glass, and the like. If necessary, an easy adhesion treatment such as a corona treatment can be performed.

Here, the interfacial adhesive force between the base material 11 and the photocurable resin layer 12 does not depend on whether the photocurable resin layer 12 has been cured or not.
It is necessary that the internal cohesion of the photocurable resin layer 12 and the interfacial adhesion between the photocurable resin layer 12 and the light-transmitting member 13 be smaller. On the other hand, as the transfer member used in the present invention, a metal-deposited sheet provided with a metal-deposited layer of aluminum, copper or the like on a predetermined base material, or a color material coated sheet provided with a colored resin layer can be used. As the colored powder toning the unexposed photocurable resin layer 12, pigment, carbon black, PPC toner, or the like can be used.

A method of forming a partial uneven image having the above configuration will be described below. First, a document 4 having a predetermined light-impermeable positive or negative pattern, characters 4a, etc. formed thereon as shown in FIG. 3 is brought into close contact with the light-transmissive member 13 side of the partially uneven image forming material 10, The original 4 is exposed. As a result, the photocurable resin of the exposed portion 12a is cured in a form corresponding to the uneven shape of the base material 11, whereas the unexposed portion 12b remains fluid and sticky.
Therefore, after the base material 11 is peeled off as shown in FIG. 4, the photo-curable resin layer 12 and the metal deposition layer 51 of the metal deposition sheet 5 are laminated so as to match as shown in FIG. Exposure through No. 13 cures the unexposed portion 12b, and then peels off the metal deposition sheet 5 to obtain a smooth metallic gloss image 52 on the portion that was the unexposed portion 12b (FIG. 6). It should be noted that a coloring material coat sheet 6 is used in place of the metal deposition sheet 5, and the colored image 6
2 can also be obtained. Furthermore, by using different transfer members for different parts, such as obtaining a multicolor image, etc.
The design can also be enhanced.

When the light-transmitting member 13 is thick like a sheet or a plate and the resolution is problematic at the time of exposure, the light-transmitting material is used for the substrate 11 and the light-transmitting material 13 is exposed from the substrate 11. Alternatively, the front surface exposure may be performed by the light transmitting member 13 after fixing the colorant. When using colored powder,
The photocurable resin is partially cured to form a substrate 1 as shown in FIG.
After exfoliation of No. 1, unexposed portion 1 which remains fluidity and tackiness
The colored powder 7 is toned and fixed to 2b (FIG. 7). After that, the excess colored powder that has not adhered is removed, and if necessary, the entire surface is exposed through the light-transmitting member 13, whereby a partially uneven image having the smoothed colored image 62 can be formed.

The partial uneven image display having the partial uneven image obtained in this way can be used as it is for decoration, or the sheet-like one can be used for pasting to another article to enhance the design of the article. can do.

[0016]

The present invention will be described below with reference to examples. Example 1 A photocurable resin solution having the following composition was prepared. Polyester (Byron 200 manufactured by Toyobo) 60 g Tetraethylene glycol diacrylate 30 g Benzophenone 2.6 g 4,4'-Diethylaminobenzophenone 0.4 g Methyl ethyl ketone 86.4 g Toluol 86.4 g This solution was wire-coated on a 75 μm polyester film 13 subjected to EC treatment. After applying in a bar, 100 in the oven
It dried at 90 degreeC for 90 second, and obtained the photocurable resin layer 12 of about 10 micrometers.

A polystyrene sandblasted thereon
The processed surface of the stell film 11 was aligned with the photocurable resin layer 12 and laminated at 50 ° C. and 3 m / min using a heat laminator to obtain a partially uneven image forming material 10 as shown in FIG. The original 4 is brought into close contact with this as shown in FIG. 3 and exposed from a 2 kW high-pressure mercury lamp 1 m away for 25 seconds, and then the sandblasted polyester film 1 is peeled off, and the exposed portion as shown in FIG. The resulting partial mat film 20 was obtained.

Next, an aluminum vapor-deposited film 5 having a 100-nm-thick aluminum thin film provided on one side of a polyester film having a thickness of 100 μm by vacuum vapor deposition, and an aluminum vapor-deposited surface 51 on the photocurable resin layer 12 of the partial mat film 20. 50 ° C using a heat laminator
Lamination was performed at 3 m / min. Furthermore, the polyester film 13 (light transmitting film) of the partial mat film 20
After exposing for 25 seconds from a 2 kW high-pressure mercury lamp at a distance of 1 m (FIG. 5), the aluminum-deposited film 5 is peeled off, and a partial mat film 30 on which a glossy image 52 of aluminum is formed in addition to the mat portion as shown in FIG. Ie part
A minute uneven image display 30 was obtained.

The partial mat film 30 has a very high design property, which cannot be obtained by the conventional method of having a metallic gloss image partially on the mat surface. Example 2 A photocurable resin solution was prepared in the same manner as in Example 1 and applied to a 75 μm polyester film 13 subjected to EC treatment and dried to obtain a photocurable resin layer 12 of about 10 μm. Further, a polyvinyl chloride film 11 embossed in a satin shape was laminated thereon at 50 ° C. and 3 m / min to obtain a partially uneven image forming material 10 as shown in FIG .

The original 4 is brought into close contact with this as shown in FIG.
After exposure from a 2kW high pressure mercury lamp 1m away for 25 seconds,
The polyvinyl chloride film 11 was peeled off to obtain a partially matte film 20 in which the exposed portion had a matte pattern (FIG. 4). Next, a 100-μm-thick polyester film was coated on one side with an aluminum-deposited film 5 having a 100-nm-thick aluminum thin film formed by vacuum deposition, and the aluminum-deposited surface was aligned with the photocurable resin layer 12 of the partial mat film 20 to form a heat laminator. Were laminated at 50 ° C. and 3 m / min. Further, after exposing for 25 seconds from a 2 kW high-pressure mercury lamp 1 m away through the polyester film 13 (light transmitting film) of the partial mat film 20 (FIG. 5), the aluminum-deposited film 5 is peeled off, except for the satin portion as shown in FIG. 6. Aluminum gloss image 52
Was formed to obtain a partial mat film 30.

According to this method, it was possible to obtain a film having a very high design property, which cannot be obtained by the conventional method of having a metallic glossy image of an arbitrary pattern on the satin finish. Example 3 A colored resin solution having the following composition was prepared. 4 g of methacrylic acid / methacrylic acid ester copolymer (copolymer composed of 30 mol% of methyl methacrylate, 40 mol% of 2-hydroxyethyl methacrylate, 27 mol% of methacrylonitrile, 3 mol% of methacrylic acid) Carbon black (Mitsubishi) MA-100 manufactured by Kasei Co., Ltd. 2 g Distilled water 80 g Ammonia water (28%) 1 g Silicone surfactant (FS-XB-2725 manufactured by Dow Corning) 1 g This colored resin solution was subjected to 100 μm using a wire bar.
m and dried with hot air at 100 ° C. for 2 minutes to obtain a coloring material coated sheet 6 having a colored resin layer having a thickness of 1.5 μm.

After obtaining the partial mat film 20 in which the exposed portion is matte in the same manner as in Example 1, the colored resin layer 61 of the color material coat sheet 6 is matched with the photocurable resin layer of the partial mat film 20. In this manner, lamination was performed at 50 ° C. and 3 m / min using a heat laminator. 2m from a 2kW high pressure mercury lamp 1m away through a light transmitting film
After the entire surface was exposed for 5 seconds, the color material coated sheet was peeled off to obtain a partial mat film 30 on which a colored image was formed other than the mat portion. The partial mat film thus obtained had sharper images and better design properties than a conventional mat film provided with a colored image by a printing method. Example 4 After obtaining a partially matte film 20 in which the exposed portion was matte in the same manner as in Example 1, carbon black (MA-100 manufactured by Mitsubishi Kasei) was toned on one side, and the unexposed portion was removed. It was fixed, and excess carbon black was removed with a dust collector to obtain a partial mat film that was smooth and black except for the mat portion. The partial mat film obtained in this way had sharp images and excellent design properties like the mat film of Example 3.

[0023]

As is clear from the above embodiments, according to the present invention, it is possible to form a smooth metal image and a colored image other than a portion having an uneven shape by a dry process. The image has an unprecedented design property and is excellent as a decorative sheet.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a partially uneven image display material according to the present invention.

FIG. 2 is a cross-sectional view of the partially uneven image forming material according to the present invention.

FIG. 3 is a diagram illustrating a method for forming a partially uneven image according to the present invention.

FIG. 4 is a diagram illustrating a method for forming a partially uneven image according to the present invention.

FIG. 5 is a diagram illustrating a method for forming a partially uneven image according to the present invention.

FIG. 6 is a diagram illustrating a method for forming a partially uneven image according to the present invention.

FIG. 7 is a diagram illustrating a method for forming a partially uneven image according to the present invention.

[Explanation of symbols]

 Reference Signs List 10: Partially uneven image forming material 11: Base material 12: Photocurable resin layer 13: Light transmissive member 3:・ Partial unevenness image display 4 ・ ・ ・ ・ ・ ・ Documents 5, 6 ・ ・ ・ ・ ・ ・ Transfer member 7 ・ ・ ・ ・ ・ ・ Colored powder

Claims (3)

(57) [Claims] 1. A photocurable resin layer on a substrate having an uneven shape.
A partial uneven image display material having a partial uneven image formed by using a partial uneven image forming material having the same surface, the uneven surface portion and a smoothed transfer image portion or a colored image portion. The uneven portion is a photocurable material of the partially uneven image forming material.
The resin layer is formed by partially exposing and curing the resin layer. The transfer image portion or the color image portion is formed by transferring a transfer material or a color material to an unexposed portion of the photocurable resin, smoothing the entire surface, and exposing the entire surface. Or a partially concave / convex image display material formed without exposure . 2. A light-curing method, wherein an original is superposed on the light-transmitting member of a partially uneven image-forming material, which is obtained by sequentially laminating a light-curable resin layer and a light-transmitting member on a substrate having a concavo-convex shape. After curing only the exposed portion of the curable resin layer into an uneven shape corresponding to the base material, the base material is peeled off, and the transfer layer of the transfer member further including a transfer layer on the photocurable resin layer After overlapping, the entire surface is exposed through the light transmitting member, and the transfer member is peeled off, so that a portion having a transfer image smoothed by the transfer layer on a portion other than the portion having the uneven shape is provided. A method for forming a partial uneven image, comprising forming an uneven image. 3. A photo-curing method in which a document is superposed on the light-transmitting member of the partially uneven image forming material, which is formed by sequentially laminating a photo-curable resin layer and a light-transmitting member on a substrate having a concavo-convex shape, After curing only the exposed portion of the curable resin layer into an uneven shape corresponding to the base material, the base material is peeled off, and the colored powder is toned to the photocurable resin layer and fixed to the unexposed portion, After removing the excess colored powder, the entire surface is exposed through the light-transmitting member , or is not exposed, and a portion having a colored image smoothed by the colored powder in a portion other than the portion having the uneven shape. A method for forming a partial uneven image, comprising forming an uneven image.