JPH0999624A - Printing sheet having carbon weaving pattern and adhesive sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing sheet having carbon weaving pattern, which is produced by printing so as to give cubic effect, and an adhesive sheet. SOLUTION: This printing sheet consists of first screen printing patterns 21, each of which is composed of a plurality of unit patterns made of a parallel stripe pattern under so regularly combined state that the directions of the stripes of the unit patterns adjacent to each other are different from each other, made on the surface of a substrate 3 and second screen printing patterns 22, which are formed on the first screen printing patterns 21 through a transparent resin layer 4 under the state that the parallel stripe pattern of the unit pattern of the first screen printing pattern is exactly mated with that of the unit pattern of the second printing pattern. Furthermore, an adhesive sheet is formed by providing an adhesive layer 6 on the rear surface of the substrate 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing sheet and a pressure-sensitive adhesive sheet having a carbon woven pattern which gives a viewer a three-dimensional effect.

[0002]

2. Description of the Related Art Conventionally, carbon fibers have been used for shaft-like objects such as fishing rods, and the appearance of the shaft-like objects is
A pattern in which fine carbon fibers are woven, that is, a carbon woven pattern is formed. Further, also for adhesive labels, decorative plates, etc., those having a carbon woven pattern formed by using carbon fibers are used for various purposes.
On the other hand, various attempts have heretofore been made to obtain a printed matter having a three-dimensional effect by printing. For example, in JP-A-60-244587, a transparent resin containing a condition modifier such as organic bentonite or polyethylene oxide is printed on the surface of a substrate to form an uneven pattern composed of a plurality of unit patterns. It is described in JP-A-49-
Japanese Patent No. 7012 describes that an opaque pigment and a transparent dye are printed on the surface of a substrate having a reflective surface to form a three-dimensional pattern.

Further, two layers having a fine repeating pattern such as a screen for plate making such as gravure or offset are provided so as to face each other, and a predetermined difference in screen ruling is provided between these layers. Alternatively, it is also proposed to shift the screen angle to cause optical interference fringes, so-called moire. That is, for example, in Japanese Patent Application Laid-Open No. 61-135799, there is provided a decoration that produces a moire pattern by preparing two base material sheets having a basic pattern and superposing and sticking them in a desired plane rotation angle range. Sheets are disclosed. Further, Japanese Utility Model Laid-Open No. 6-39500 describes a decorative display body in which patterns having different densities are formed on both sides of a transparent plate, or patterns arranged so as to form a predetermined angle with each other are formed. It is described that a moire pattern is formed by illumination with a light from the back surface.

[0004]

By the way, if a carbon woven pattern can be formed without using carbon fibers,
Since it is possible to significantly reduce the cost as an alternative to the one using carbon fiber, it has been conventionally desired to form a carbon woven pattern without using carbon fiber. However, when a carbon woven pattern is formed using the method proposed hitherto, it is not possible to obtain a one having a sufficient three-dimensional effect. That is, in the case of forming a three-dimensional pattern on the surface of the substrate as described in JP-A-60-244587 and JP-A-49-7012, a sufficient three-dimensional effect is not obtained, and a special effect is not obtained. As disclosed in Japanese Unexamined Patent Publication No. 61-135799 and Japanese Utility Model Laid-Open No. 6-39500, in a method of forming a moire pattern by superimposing two different patterns, the moire pattern has a beautiful appearance as a decorative element. However, it is not possible to generate the three-dimensional effect of the carbon woven pattern.

The present invention has been made in view of the above-mentioned actual situation in the prior art. Therefore, an object of the present invention is to provide a printing sheet and a pressure-sensitive adhesive sheet having a carbon woven pattern that gives a three-dimensional effect formed by printing.

[0006]

Means for Solving the Problems The present inventors have found that a carbon woven pattern having a three-dimensional effect can be obtained by forming exactly the same carbon woven pattern through a transparent resin layer. It came to completion.

That is, the first print sheet having a carbon woven pattern of the present invention is composed of a plurality of unit patterns made of parallel stripes on one surface of a transparent resin sheet material,
Forming a first screen-printed pattern in which adjacent unit patterns are regularly combined so that the stripe directions thereof are different from each other, and the unit pattern of the first screen-printed pattern is formed on the other surface of the transparent resin sheet material. It is characterized in that the second screen-printed pattern is formed so as to exactly match the parallel striped pattern.

A second printed sheet having a carbon woven pattern of the present invention comprises a plurality of unit patterns composed of parallel stripe patterns on the surface of a substrate, and adjacent unit patterns have different stripe directions. A first screen-printed pattern that is regularly combined is formed, and a second screen-printed pattern is formed on the first screen-printed pattern so that the second screen-printed pattern is exactly aligned with the parallel strip pattern of the unit pattern through a transparent resin layer. It is characterized by being formed.

The pressure-sensitive adhesive sheet having a carbon woven pattern of the present invention comprises a plurality of unit patterns composed of parallel stripe patterns on the surface of the substrate, and the unit patterns adjacent to each other are regularly assembled so that the stripe directions are different from each other. The first screen-printed pattern formed on the substrate, and the second screen-printed pattern is formed on the first screen-printed pattern so that the second screen-printed pattern is exactly aligned with the parallel strip pattern of the unit pattern through the transparent resin layer. An adhesive layer is provided on the back surface of the.

In the second printing sheet and the pressure-sensitive adhesive sheet of the present invention, a metal thin film layer may be provided on the front surface or the back surface of the substrate. Further, it is preferable that a transparent resin layer is provided as a surface protective layer on the second screen-printed pattern.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below. FIG. 1 is a schematic sectional view of a first printed sheet of the present invention. A layer made of the first screen-printed pattern 21 is formed on one surface of the transparent resin sheet material 1, and a layer made of the second screen-printed pattern 22 is formed on the other surface. The first and second screen-printed patterns are composed of a plurality of unit patterns composed of parallel strip patterns, and adjacent unit patterns are regularly combined so that the strip directions are different from each other. It has a carbon woven appearance. FIG. 2 shows an example of a carbon woven pattern, in which unit patterns (a) and (b) composed of parallel strip patterns are regularly arranged adjacent to each other so that the strip directions of the unit patterns are at right angles. Are associated with. The unit pattern in either the first screen-printed pattern or the second screen-printed pattern may be shaded by a border. The shadow may be formed by halftone dot printing in addition to solid printing using black ink, and may also be formed by shading by gradation printing. FIG. 3 shows such a case, and shows a case where the unit pattern is shaded (c) by solid printing by edging.

In the present invention, it is necessary that the first and second screen-printed patterns provided on both surfaces of the transparent resin sheet material are provided so that the parallel strip patterns of the unit patterns thereof are exactly coincident with each other. If the parallel stripe patterns of the unit patterns do not match exactly, a moire fringe pattern appears, and the three-dimensional effect as a carbon woven pattern does not occur.

Examples of the transparent resin sheet material include those formed of sheets and plate materials such as polyolefin such as polyethylene and polypropylene, polyester such as polyethylene terephthalate, acrylic resin, vinyl chloride resin and polycarbonate resin. The thickness of the transparent resin sheet material is preferably in the range of 0.3 mm to 10 mm. If the thickness is less than 0.3 mm, the three-dimensional effect is insufficiently expressed, and if it is more than 10 mm, the workability is lowered and the cost is increased.

In the screen printing, a carbon woven pattern positive image is prepared by computer image processing, and a screen printing plate is prepared by a usual method. When the mesh of the printing plate has a mesh value smaller than 270, the reproducibility of the line is deteriorated, and therefore the mesh size is preferably 270 or more. Any known black ink or dark dark ink can be used as the printing ink. In the first and second screen-printed patterns formed in the present invention, the parallel strip pattern of the unit pattern has a thickness of 0.0
It consists of 5 mm to 0.2 mm lines, and each line is 0.1 mm to
Those formed with an interval of 1 mm are preferable.

FIG. 4 is a schematic sectional view of the second printing sheet of the present invention. A first screen-printed pattern 21 is formed on the surface of the substrate 3, a transparent coating film 4 made of synthetic resin is formed thereon, and a second screen-printed pattern 22 is further formed thereon. Further, a transparent resin layer 5 is coated on these for surface protection. Also in the case of this printed sheet, it is necessary to provide the first and second screen-printed patterns so that the parallel strip patterns of the unit patterns thereof are exactly coincident with each other, as in the case described above with reference to FIG. is there.

FIG. 5 is a schematic sectional view of the pressure-sensitive adhesive sheet of the present invention. The pressure-sensitive adhesive layer 6 is provided on the back surface of the substrate 3 of the second printing sheet, and the release sheet 7 is further provided on the surface thereof. Is provided. The other symbols have the same meanings as those shown in FIG.

In these cases, as the substrate 3, a sheet or plate material such as polyolefin such as polyethylene or polypropylene, polyester such as polyethylene terephthalate, acrylic resin, vinyl chloride resin, polycarbonate resin, polyurethane resin or fluorine-containing resin is used. .
Further, a vapor deposition film of a metal or alloy such as aluminum, chromium, titanium, stainless steel, gold, silver, copper or nickel may be formed on the front surface or the back surface of these bases. Further, it is also possible to use a substrate made of a roughened synthetic resin film having a hairline finish on its surface, a metal foil such as an aluminum foil, a woven fabric, paper or the like.

The transparent resin layer 5 provided on the first screen-printed pattern 21 is specifically made of synthetic resin such as acrylic resin, urethane resin, polyester resin, etc., and it is known by coating, spraying or printing. It can be formed by a coating method. Moreover, you may laminate the film comprised by these resins. The thickness of the transparent resin layer is 5
The range of μm to 100 μm is preferable. When the film thickness of the transparent resin layer is thinner than 5 μm, the three-dimensional effect is insufficiently expressed, and when it is thicker than 100 μm, it is not desirable in terms of workability and cost.

In the present invention, prior to forming the above first screen-printed pattern, metallic printing may be performed on the surface of the substrate using a solution of a transparent resin in which aluminum flakes, pearl pigments and the like are dispersed. FIG. 6 shows an example of the pressure-sensitive adhesive sheet in that case. The surface of the substrate is provided with the metallic print layer 23, the first screen-printed pattern 21 is formed thereon, and the transparent resin layer 4 is further provided.
The second screen-printed pattern 22 is formed via the. Note that other symbols have the same meanings as described above.

The transparent resin layer provided on the second screen-printed pattern for surface protection can be formed by using, for example, the above synthetic resin. Moreover, the transparent resin layer may be formed by potting using a polyurethane resin, an epoxy resin, or the like.

On the other hand, the adhesive layer formed on the back surface of the substrate is
Any known pressure-sensitive adhesive can be used. Specifically, a rubber-based or acrylic pressure-sensitive adhesive is preferably used. Further, it is preferable that a release sheet such as release paper or polyester film treated with a silicone resin is temporarily attached on the pressure-sensitive adhesive layer.

[0022]

The present invention will be described below with reference to examples and comparative examples, but the present invention is not limited to these examples. In the following examples, "part" means "part by weight". Example 1 On the back surface of a 25 μm-thick polyester film whose surface was roughened by hairline treatment, an acrylic adhesive (SK
Using a pressure-sensitive adhesive sheet provided with a pressure-sensitive adhesive layer made of an acrylic pressure-sensitive adhesive obtained by adding 2 parts by weight of a curing agent (L-45, manufactured by Soken Chemical Industry Co., Ltd.) to 100 parts by weight of Dyne 1604N manufactured by Soken Chemical Industry Co., Ltd. On the surface of the polyester film of the pressure-sensitive adhesive sheet, a carbon woven pattern was printed by a screen printing method using a black ink for polyester (trade name: Sericol EG-911, manufactured by Teikoku Ink Mfg. Co., Ltd.), followed by drying. A screen printed pattern was formed. In addition, the carbon woven pattern is 6 mm with 0.1 mm thick stripes at intervals of 0.1 mm.
The book consisted of unit patterns. Then, a transparent resin solution (trade name: Sericol VK-000, manufactured by Teikoku Ink Mfg. Co., Ltd.) is printed on the first screen-printed pattern by a screen-printing method and dried to a film thickness of 10 μm.
m transparent resin layer was formed. Further, the same black ink as above is used on the formed transparent resin layer by the same screen printing method so that the same pattern as the carbon woven pattern is not displaced from the printing position of the first screen printed pattern. Then, the second screen-printed pattern was formed by printing so as to exactly match the striations of the unit pattern and drying. Further, a lacquer having a composition made of urethane resin was applied thereon to form a protective layer made of a transparent resin to obtain a pressure-sensitive adhesive sheet having a carbon woven pattern.

Example 2 On one surface of a transparent vinyl chloride resin plate having a thickness of 0.1 mm, a black ink for vinyl chloride resin (trade name: Sericol VK-
911, manufactured by Teikoku Ink Mfg. Co., Ltd.) was used to print a carbon woven pattern similar to that in Example 1 by a screen printing method, and dried to form a first screen printed pattern. Then, on the other surface of the vinyl chloride resin plate, by the same screen printing method as described above, so as not to deviate from the printing position of the first screen printing pattern and to exactly match the striations of the unit pattern. Was printed and dried to form a second screen-printed pattern, thereby producing a print sheet having a carbon woven pattern.

Example 3 A chromium vapor deposition film was provided on one side of a trifluoroethylene chloride polymer film having a thickness of 50 μm, and an adhesive layer made of the same acrylic adhesive as in Example 1 was provided thereon. Using a release paper temporarily adhered as a substrate, a first screen-printed pattern, a transparent resin layer, a second screen pattern and a protective layer are formed on the opposite surface of the chromium vapor deposition film in the same manner as in Example 1. Then, an adhesive sheet having a carbon woven pattern was obtained.

Example 4 An adhesive layer made of the same acrylic adhesive as in Example 1 was formed on one surface of a vinyl chloride resin film having a thickness of 50 μm, and a transparent resin solution (trade name: Sericol) was formed on the other surface. VK-000 (manufactured by Teikoku Ink Mfg. Co., Ltd.) was printed with a metallic ink in which aluminum flakes were dispersed by a screen printing method to form a desired pattern. Next, a black ink for vinyl chloride resin (trade name: Sericol VK-911, manufactured by Teikoku Ink Mfg. Co., Ltd.) was used in Example 1.
Printing was performed in the same manner as in (1) to form a first screen-printed pattern. Thereafter, a transparent resin layer, a second screen pattern and a protective layer were formed in the same manner to obtain a pressure-sensitive adhesive sheet having a carbon woven pattern.

[0026]

INDUSTRIAL APPLICABILITY As described above, the printing sheet and the pressure-sensitive adhesive sheet having the carbon woven pattern of the present invention are composed of a plurality of unit patterns composed of parallel strip patterns, and adjacent unit patterns have different strip directions. The first screen-printed pattern that is regularly combined with the second screen-printed pattern similar to the first screen-printed pattern accurately match the parallel strip pattern of the unit pattern through the transparent resin plate or the transparent resin layer. Since it is provided so as to provide the viewer with an excellent three-dimensional effect, it provides a texture similar to that of an actual carbon woven pattern. The print sheet and adhesive sheet having the carbon woven pattern of the present invention are useful as a decorative plate or an adhesive label.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of an example of a print sheet having a carbon woven pattern of the present invention.

FIG. 2 is a diagram for explaining a carbon woven pattern.

FIG. 3 is a diagram for explaining a carbon woven pattern.

FIG. 4 is a schematic cross-sectional view of another example of a printing sheet having a carbon woven pattern of the present invention.

FIG. 5 is a schematic cross-sectional view of an example of a pressure-sensitive adhesive sheet having a carbon woven pattern of the present invention.

FIG. 6 is a schematic cross-sectional view of another example of a pressure-sensitive adhesive sheet having a carbon woven pattern of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Transparent resin sheet material, 21 ... 1st screen-printed pattern, 22 ... 2nd screen-printed pattern, 23 ... Metallic printed layer, 3 ... Substrate, 4 ... Transparent resin layer, 5 ... Transparent resin layer, 6 ... Adhesive layer, 7 ... Release sheet.

Claims (7)

[Claims] 1. A first screen comprising a plurality of parallel unit patterns formed on one surface of a transparent resin sheet-like article, and adjoining unit patterns being regularly assembled so that the unit directions are different from each other. A printed pattern is formed, and a second screen printed pattern is formed on the other surface of the transparent resin sheet material so that the second screen printed pattern is exactly aligned with the parallel strip pattern of the unit patterns in the first screen printed pattern. A printing sheet having a carbon woven pattern characterized by: 2. A first screen-printed pattern is formed on a surface of a substrate, which is composed of a plurality of parallel unit patterns and is regularly combined so that adjacent unit patterns have mutually different stripe directions. Then, a second screen-printed pattern is formed thereon so that the second screen-printed pattern is formed so as to be accurately aligned with the parallel strip pattern of the unit pattern through a transparent resin layer, and a printed sheet having a carbon woven pattern. 3. The printed sheet having a carbon woven pattern according to claim 2, wherein a metal thin film layer is provided on the front surface or the back surface of the substrate. 4. A printed sheet having a carbon woven pattern according to claim 2, wherein a transparent resin layer is provided as a surface protective layer on the second screen-printed pattern. 5. A first screen-printed pattern is formed on a surface of a substrate, which is composed of a plurality of parallel unit patterns and is regularly combined so that adjacent unit patterns have mutually different stripe directions. Then, a second screen-printed pattern was formed on the transparent resin layer so as to exactly match the parallel strip pattern of the unit pattern, and an adhesive layer was provided on the back surface of the substrate. An adhesive sheet having a carbon woven pattern characterized by: 6. The pressure-sensitive adhesive sheet having a carbon woven pattern according to claim 5, wherein a metal thin film layer is provided on the front surface or the back surface of the substrate. 7. The adhesive sheet having a carbon woven pattern according to claim 5, wherein a transparent resin layer is provided as a surface protective layer on the second screen-printed pattern.