JP2994939B2 - Method for developing soft metallic effect and three-dimensional effect on printed surface - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing technique for simultaneously exhibiting a soft metallic effect and a three-dimensional effect on a printed pattern in various printings.

[0002]

2. Description of the Related Art Conventionally, the appearance of a metallic effect and a three-dimensional effect of a printed pattern is achieved by stamping a metal foil on the surface of the printed pattern and embossing the pattern, or printing a pattern on the surface of a solid foil of a metal foil. Although there was an embossed part on the top, there was a drawback that the soft metallic effect, three-dimensional effect, profound feeling, astringency, depth and the like were insufficiently exhibited.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method capable of simultaneously exhibiting a soft metallic effect and a three-dimensional effect on a printing surface, and at the same time, imparting a sense of power, solidness, astringency, and depth. Is to do.

[0004]

Means for Solving the Problems The present invention has been proposed to achieve the above-mentioned object, and the feature of the present invention is to press a metal foil having a shade from the top of a printed pattern. In addition, after performing multicolor printing thereon, the embossing is performed. That is, according to the present invention, the entire or a part of the desired printed pattern on one side of the base material is subjected to metal foil stamping with solid shades or shades of gradation by halftone dots, and the surface of the foil stamped portion is coated with the metal foil. Apply the desired printed design in solid or multi-color by solid or halftone dots,
The present invention provides a method for embodying a soft metallic effect and a three-dimensional effect on a printed pattern, characterized by embossing the printed pattern over the entire surface or a part thereof.

[0005]

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises the steps of selecting a base paper, stamping with stepwise shading, printing, and stamping. If necessary, an anchor process for fixing a metal foil is performed. After application, printing and embossing are performed. The printing pattern used in the present invention is not particularly limited, but judging from the effect of expressing the three-dimensionality, it is particularly suitable for various sports scenery, mountain scenery, various vehicles, buildings, metal containers, tableware, flowering plants. Effective for animals, fish cultivation, earthenware, haniwa etc. The method includes the steps of: applying a metal foil having a stepwise shading by solid shading or halftone dots to the entire surface or a part of the desired printing pattern on one surface of the base material; By printing a single color or multi-color with solid or halftone dots and embossing the entire or a part of the printed pattern, a soft metallic effect and a three-dimensional effect can be exhibited on the printed surface. Next, the method of the present invention will be specifically disclosed.

<Substrate> As the substrate, fine paper, pure white roll paper, kraft paper, paperboard, art paper, coated paper, cast coated paper, mat coated paper, fancy paper, Japanese paper, synthetic paper, nonwoven fabric, resin impregnated Paper, various plastic films and the like are used, and those having a basis weight of 50 to 500 g / m ² , preferably 100 to 410 g / m ² are appropriately selected and used depending on the application.

<Foil Stamping> Foil stamping is applied to the entire surface or a part of a desired pattern on a base material with a gradation of solid or halftone dots of a flat pressure type or cylinder type plate. As the material of the foil, silver foil, gold foil, copper foil, pearl foil, pigment foil, and the like are used.
Those having a size of about 4 μm are preferably used. In addition, the stepwise shading by the halftone dots indicates that the screen ruling of the plate is 50 to 150.
Applied by lines. Further, if necessary, an anchor treatment is performed for the purpose of fixing the metal foil layer and increasing the adhesiveness with the ink applied thereon, and the anchor agent is an acrylic resin, a vinyl chloride-vinyl acetate resin, a polyester resin, or A blend of a vinyl chloride-vinyl acetate resin and a polyester resin is used.
g / m ² .

<Printing> The printing is performed by printing the same pattern used for the foil stamping on the foil stamping by a usual printing method such as offset printing, letterpress printing, gravure printing or the like by solid or multicolor printing, for example, from 4 to 6 colors. Color printed. Further, if necessary, an overcoat with a varnish may be finally applied for the purpose of surface protection.

<Embossing> Embossing is applied to a part or the entire surface of the printed pattern by a flat pressure type or a set of cylinders. One-sided embossing and punching / pressing are selectively used depending on the printed pattern. ４００400 μm is appropriately selected to give a three-dimensional effect.

[0010]

EXAMPLES Next, the present invention will be described specifically with reference to Examples and Comparative Examples, but these are for explaining the effects of the present invention, and the present invention is not limited thereto.

<Example 1> A base material of dull art paper (matte art paper) having a basis weight of 128 g / m ² was used. Demonstrated. First of all, "Iris" on one side of the base material
Silver leaf is applied to the flowers and leaves along the pattern of the pattern by a flat pressure type foil stamping machine (manufactured by Ikeda Foil Stamping Works) with a screen ruling of 150, gold foil thickness of 3 μm, and speed of 6000 frames / hour. Using a baby offset printing machine (manufactured by Komori Printing Machine) on the foil stamping.
Under the condition of 0 sheets / hour, halftone four-color printing (smear-eye-red) was performed by offset. Further, the embossing having a depth of 30 to 150 μm is partially embossed on the printing using a flat pressure type foil stamping machine (manufactured by Ikeda Foil Stamping Works) at a speed of 500 sheets / hour, and printing is performed. A soft metallic effect and a three-dimensional effect were developed for the design.

Example 2 An art paper having a basis weight of 157 g / m ² was used as a base material, and a printed pattern “passenger car” was formed on one side of the base material.
Was treated as described below to exert the effects of the present invention. First, on one side of the substrate, gold foil was applied to the entire surface of the passenger car along with the pattern of "passenger car" by a cylinder type foil stamping machine (manufactured by Tahara Foil Stamping Machine Co., Ltd.) with a screen ruling of 140 and a thickness of silver foil of 3μ.
m, a speed of 1000 RPM / hour, a foil press with stepwise shading is applied, and AFUL-54 (a blend of vinyl chloride-vinyl acetate resin and polyester resin, manufactured by Tokyo Ink Co., Ltd.) as an anchor treatment on the foil press. Was applied using a Hiradai gravure printing machine (manufactured by Komori Printing Machine Co., Ltd.) at a rate of 3000 sheets / hour on a dry basis at 6.5 g / m ^{2, and} dried with a far-infrared heater to fix the silver foil layer. After the processing, halftone four-color printing (sumi-eye-red) was performed by offset. Further, a partly embossed portion having a depth of 30 to 200 μm is embossed on the printing by using a flat pressure type foil stamping machine (manufactured by Tahara Foil Stamping Machine Co., Ltd.) at a speed of 500
Pressing and embossing were performed under the condition of sheets / hour, so that a soft metallic effect and a three-dimensional effect were exhibited on the printed pattern.

<Comparative Example 1> A comparative sample print was obtained in the same manner as in Example 1, except that the stepped shading having a stepwise shading performed in the example 1 was replaced with a solid foil stamp having no shading. Was.

<Comparative Example 2> The stamping with stepwise shading performed in Example 1 is replaced by solid foil stamping without shading, and the order of “foil stamping-printing-embossing” is changed to “printing-
A sample print for comparison was obtained in the same manner as in Example 1 except that the order was changed to "foil stamping-embossing".

[0015]

[Test Method] Based on the samples obtained in Examples 1 and 2 and Comparative Examples 1 and 2, tests were performed according to the following test items, test methods and criteria. 1. Soft metallic effect The soft metallic effect of the sample printed matter is visually judged according to the following criteria. (Judgment criteria) ・ ・ ・: significant effect, ・ ・ ・: effective, ・ ・ ・: almost no effect, ×: no effect. Three-dimensional effect The three-dimensional effect of the sample printed matter is visually judged according to the following criteria. (Judgment criteria) ・ ・ ・: significant effect, ・ ・ ・: effective, Δ: almost no effect, ×: no effect. Profound feeling The profound feeling of the sample printed matter is visually judged according to the following criteria. (Judgment criteria) ◎ ・ ・ ・ Notable effect, ○ ・ ・ ・ Effective effect △ ・ ・ ・ None effect, × ・ ・ ・ No effect at all

[0016]

[Test Results] The results of the tests are shown in Table 1.

[Table 1]

[0017]

According to the present invention, a soft metallic effect and a three-dimensional effect can be effectively exerted on a desired portion of a printed pattern as shown in the test result table.

Claims (1)

(57) [Claims] 1. A metal foil having a solid shade or a stepwise shade by halftone dots is applied to the entire surface or a part of a desired printed pattern on one surface of a substrate, and the desired printed pattern is formed on the surface of the foil stamped portion. A method for producing a soft metallic effect and a three-dimensional effect on a printed surface, wherein a monochromatic or multicolor printing is performed by a solid or halftone dot pattern, and the whole or a part of the printed pattern is embossed.