JPH0781206A - Image forming body and its production - Google Patents

Abstract

PURPOSE:To change a tone in addition to a change in shade and brightness by fine-line uneven pattern groups to obtain a more beautiful effect. CONSTITUTION:A pressing press 5 provided with an embossing pattern formed by combining a plurality of fine-line waveform uneven pattern groups, each of which is an arrangement of waveform uneven parts in a fine-line form, so that the directions of fine lines of the fine-line waveform uneven pattern groups are variously changed is pressed down on a film 3 which is formed by laminating a plurality of light-transmitting thermoplastic resin materials having different refractive indexes and has a small spectral band of reflected light caused by an interference of the reflected light by the laminated layers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming body in which a pattern or the like is drawn on a substrate and a press plate having the embossing pattern is pressed to form the embossing pattern, and an improvement in the method for producing the same.

[0002]

2. Description of the Related Art Such an image forming body is used as a new opal (trade name), and is a laminate comprising at least a base material / wax-based adhesive layer / metal layer, for example, wax-laminated aluminum foil paper. If necessary, a pattern is applied to the aluminum surface, and then a press plate having an empos pattern in which a group of fine line-shaped uneven patterns is combined is pressed to obtain.

In such an image forming body, since the line direction of the embossed pattern formed on the surface of the image forming body is swung in various directions, the reflection direction of the reflected light on the pattern surface changes variously, and the viewing angle and When the direction is changed in various ways, the shade and brilliance of each line-shaped uneven pattern group dynamically change (that is, the opal effect), producing an extremely beautiful effect.

[0004]

However, in an image forming body having such an embossed pattern, only the shade and brilliance dynamically change due to the line-shaped uneven pattern group, and if possible, However, if the color of the design changes, there is a demand that a more beautiful effect can be produced.

Therefore, in the present invention, the shade can be changed in addition to the change in shade and brilliance due to the line-shaped uneven pattern group,
An object of the present invention is to provide an image forming body capable of producing a more beautiful effect and a method for producing the same.

[0006]

According to a first aspect of the present invention, a plurality of light-transmitting thermoplastic resin materials having different refractive indexes are laminated respectively, and narrow reflection is caused by interference of reflected light from these layers. For a film having an optical band spectrum, a plurality of line-shaped corrugated concavo-convex pattern groups in which corrugated concavo-convex portions are arranged in a line are assembled, and the embossed line patterns of these corrugated corrugated pattern groups are variously changed. The image forming body is intended to form a pattern to achieve the above object.

According to the second aspect, a base material, a dyeing material applied on the base material, and a plurality of light-transmitting thermoplastic resin materials arranged on the dyeing material and having different refractive indexes. Each is laminated, and a laminate is formed from a film having a narrow reflected light band spectrum due to the interference of reflected light from these layers, and at least the film of this laminate has a wavy uneven portion in a linear shape. An image forming body which is intended to achieve the above object by collecting a plurality of line-shaped corrugated concavo-convex pattern groups arranged in a line and forming emboss patterns in which the line directions of these line-shaped corrugated concavo-convex pattern groups are variously changed. is there.

According to the present invention, a base material and a plurality of light-transmitting thermoplastic resin materials arranged on the base material and having different refractive indexes are respectively laminated, and interference of reflected light from these layers is performed. A film having a narrow reflected light band spectrum due to, and a light-transmitting dyeing material applied on the film to form a laminate, and at least the dyeing material of the laminate to the film , A set of a plurality of line-shaped corrugated concavo-convex pattern groups in which corrugated concavo-convex portions are arranged in a line,
Further, the image forming body is intended to achieve the above object by forming embossed patterns in which the line direction of the line-shaped corrugated concavo-convex pattern group is variously changed.

According to the present invention, a plurality of light-transmitting thermoplastic resin materials having different refractive indexes are respectively laminated, and a film having a narrow reflected light band spectrum due to interference of reflected light from these layers is formed. And a plurality of sets of line-shaped corrugated concavo-convex pattern groups in which corrugated concavo-convex portions are arranged in a line, and the line direction of these corrugated corrugated pattern groups is set in various directions. And a step of imparting a changed embossed pattern, which is a method for producing an image forming body to achieve the above object.

According to the present invention, the step of applying the dyeing material on the substrate, and after this step, the plurality of light-transmitting thermoplastic resin materials having different refractive indexes are laminated on the dyeing material. , Arranging a film having a narrow reflected light band spectrum due to interference of reflected light from these layers,
At least to the film, a plurality of sets of line-shaped corrugated concavo-convex pattern groups in which corrugated concavo-convex parts are arranged in a parallel line are assembled, and emboss patterns in which the line direction of these line-shaped corrugated concavo-convex pattern groups is variously changed are given. The method for producing an image-forming body, which comprises the step of:

According to a sixth aspect, a plurality of light-transmitting thermoplastic resin materials having different refractive indexes are laminated on a base material, respectively, and narrow reflected light is caused by interference of reflected light from these layers. A step of disposing a film having a band spectrum, a step of applying a light-transmitting dyeing material on the film,
At least through the dyeing material, a plurality of sets of line-shaped corrugated concavo-convex pattern groups in which corrugated concavo-convex portions were arranged in a parallel line were set on the film, and the line direction of these corrugated corrugated pattern patterns was changed variously And a step of providing an embossed pattern, which is a method for producing an image-forming body to achieve the above object.

[0012]

According to the first aspect of the present invention, since the embossed pattern is formed on the film formed by laminating a plurality of light-transmitting thermoplastic resin materials having different refractive indexes, the movement of the light and shade and brilliance due to the embossed pattern is formed. In addition to the change in the optical characteristics, a narrow reflected light band spectrum is exhibited due to the interference of the reflected light from each layer.

According to a second aspect of the present invention, there is provided a laminated body in which a film in which a plurality of light-transmitting thermoplastic resin materials having different refractive indexes are laminated on a dyeing material applied on a base material is provided. Since at least the embossed pattern is formed on the film, a narrow reflected light band spectrum is exhibited due to the interference of the reflected light from each layer, in addition to the dynamic change of light and shade and brilliance due to the embossed pattern as described above.

According to a third aspect of the present invention, a film is formed by laminating a plurality of light-transmitting thermoplastic resin materials having different refractive indexes on a base material, and a dyeing material is applied on the film to form a laminate. On the other hand, since the embossed pattern was formed on the film through at least the dyeing material, in addition to the dynamic change of shading and brilliance due to the embossed pattern, similarly to the above,
The narrow reflected light band spectrum appears due to the interference of the reflected light from each layer.

According to a fourth aspect, a plurality of light-transmitting thermoplastic resin materials having different refractive indexes are laminated to form a film, and then a corrugated concavo-convex portion is formed on the film in a linear shape. A plurality of line-shaped corrugated concavo-convex pattern groups arranged in a group are assembled, and emboss patterns in which the line directions of these line-shaped corrugated concavo-convex pattern groups are variously changed are provided. As a result, an image forming body is produced which exhibits a narrow reflected light band spectrum due to the interference of reflected light from each layer in addition to the dynamic change of shading and brilliance.

According to a fifth aspect, a dyeing material is applied onto a substrate, and then a film in which a plurality of light-transmissive thermoplastic resin materials having different refractive indexes are laminated is arranged on the dyeing material, After this, an embossed pattern is applied to at least the film. As a result, an image forming body is produced which exhibits a narrow reflected light band spectrum due to the interference of reflected light from each layer in addition to the dynamic change of shading and brilliance.

According to the sixth aspect, a film in which a plurality of light-transmitting thermoplastic resin materials having different refractive indexes are laminated is arranged on a substrate, and then the light-transmitting dyeing material is placed on the film. Apply. After this, an embossed pattern is applied to the film via at least the dyeing material.
As a result, an image forming body is produced which exhibits a narrow reflected light band spectrum due to the interference of reflected light from each layer in addition to the dynamic change of shading and brilliance.

[0018]

【Example】

(1) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

(A) FIG. 1 is a diagram showing a method for producing an image forming body. Ink 2 is used as a dyeing material on a substrate 1 such as paper.
Is painted. The ink 2 has a desired color. The ink 2 need not be applied unless it is particularly necessary.

A film 3 is arranged on the ink 2, and a laminate 4 is formed by the base material 1, the ink 2 and the film 3.

Of these, the film 3 is formed by laminating a plurality of light-transmitting thermoplastic resin materials having different refractive indexes in parallel, and a narrow reflected light band spectrum due to interference of reflected light from these layers. It has an iridescent color. In this case, the reflected light band spectrum is set within the visible light wavelength range.

The film 3 is a combination of a thermoplastic polyester resin having a high refractive index and a thermoplastic resin having a low refractive index.

Examples of the thermoplastic polyester resin having a high refractive index include polyethylene terephthalate (PET) obtained by reacting terephthalic acid or dimethyl terephthalate with ethylene glycol, and catalytic catalyst of 1,4-butanediol and terephthalic acid or dimethyl terephthalate. These are various thermoplastic copolyesters synthesized using polybutylene terephthalate (PBT) and one or more glycols and / or one or more dibasic acids by a coupling reaction.

For example, PETG copolyesters include ethylene glycol and cyclohexanedimethanol (CH
DM) and terephthalic acid, a glycol-modified PET, and PCTA copolyester is an acid-modified polyester obtained by modifying CHDM with terephthalic acid and isophthalic acid.

The thermoplastic resin having a low refractive index has a refractive index difference of about 0.03 or about 0.06 from the thermoplastic polyester resin having a high refractive index.

Examples of the thermoplastic resin having a low refractive index are, for example, polyethylmethacrylate, refractive index 1.48, FEP (fluorinated ethylene-propylene copolymer), refractive index 1.34, polytetrafluoroethylene, refractive index 1 .35.

Concretely, a combination of a thermoplastic polyester resin having a high refractive index and a thermoplastic resin having a low refractive index is, for example, poly (ethylene terephthalate) (PBT) as the thermoplastic polyester and a low refractive index. The thermoplastic resin has polyethylmethacrylate.

Then, these thermoplastic resins are combined to form a continuous multilayer, and the continuous adjacent layers differ in refractive index by at least about 0.03, that is, the adjacent resin materials have a refractive index of at least 0.03. It's getting low.

The number of laminated layers of these thermoplastic resins is at least 35 layers or 70 layers.

On the other hand, a pressing press 5 having an embossed pattern is arranged above the laminated body 4. This emboss pattern is a set of a plurality of line-shaped corrugated concavo-convex pattern groups in which corrugated concavo-convex portions are arranged in a line, and the line direction of these line-shaped corrugated concavo-convex pattern groups is variously changed. .

The cross-sectional shape of the corrugated irregularities of the parallel line shape is approximately a sine wave, and the pitch thereof is 0.08 to 0.13 mm.
Then, the ratio between the pitch width P and the emboss depth D is 7: 1 to 1
It is set to 0: 1.

Therefore, the concave portion 6 and the convex portion 7 of the linear wavy corrugated portion and their vicinity show a smooth curve, and such a linear wavy irregular portion is arranged regularly. A plurality of groups of wavy corrugated patterns are combined.

(B) Next, a method of forming the image forming body will be described.

Ink 2 is used as a dyeing material on a substrate 1 such as paper.
Is painted. The ink 2 has a desired color.

Next, the film 3 is placed on the ink 2 to form the laminate 4. This film 3 is formed by laminating a plurality of light-transmitting thermoplastic resin materials having different refractive indexes in parallel, for example, 35 layers each, and the continuous adjacent layers of the laminated layers have a refractive index of about 0. 03 formed differently.

Specifically, it is a combination of a thermoplastic polyester resin which is a resin having a high refractive index and a thermoplastic resin having a low refractive index. For example, as the thermoplastic polyester, polyethylene terephthalate (PBT),
Polyethylmethacrylate as a thermoplastic resin having a low refractive index.

Next, the pressing press 5 is lowered and pressed against the laminated body 4. As a result, the emboss pattern formed on the pressing press 5 is formed on at least the film 3. FIG. 2 shows the laminated body 4 pressed by the pressing press 5.
An example of the embossed pattern formed in FIG.

Thus, an image-formed body is formed in which the embossed pattern is formed on the film 3 in which the thermoplastic polyester resin having a high refractive index and the thermoplastic resin having a low refractive index are combined.

With such an image forming body, the shade and brightness of each line-shaped uneven pattern group dynamically change, that is, the opal effect can be continuously produced to produce a very beautiful effect. In addition to this, a narrow reflected light band spectrum, that is, an iridescent color is exhibited due to interference of reflected light from each layer of the multilayer thermoplastic resin material in the film 3.

That is, since the reflected light band spectrum from the film 3 is reflected according to the inclination of the film surface due to the embossed pattern, when viewed, the portion corresponding to the viewing angle looks shining in the color of the reflected light band spectrum. , The other part looks like a color in the wavelength band different from the spectrum. Therefore, the image formed with the embossed pattern can be seen due to the difference in brightness and the difference in color.

Therefore, the opal effect only changes shades and brilliance, but it can be observed as if the color changed due to the iridescent effect in tandem with the change in shades and brilliance.

Moreover, this image forming body can be manufactured inexpensively and in large quantities as compared with holograms having similar images.

(2) Next, a second embodiment of the present invention will be described.

(A) FIG. 3 is a diagram showing a method for forming an image forming body. A film 3 is arranged on a base material 1 such as paper.

The film 3 is formed by laminating a plurality of light-transmissive thermoplastic resin materials having different refractive indexes in parallel with each other. Specifically, the film 3 is a combination of a thermoplastic polyester resin, which is a resin having a high refractive index, and a thermoplastic resin having a low refractive index. For example, as the thermoplastic polyester, polyethylene terephthalate (PBT), a low refractive index is used. Polyethylmethacrylate is used as the thermoplastic resin.

Then, these thermoplastic resins are combined to form a continuous multilayer, for example, 35 layers, and continuous adjacent layers are formed so as to differ in refractive index by at least about 0.03.

On this film 3, the ink 2 is applied as a dyeing material. The ink 2 is light-transmissive, and its color shade is such that the pattern drawn on the substrate 1 can be observed.

As a result, a laminate 8 is formed by the base material 1, the film 3 and the ink 2.

On the other hand, above the laminated body 8, a pressing press 5 having an embossed pattern is arranged. This embossed pattern is a set of a plurality of line-shaped corrugated concavo-convex pattern groups in which corrugated concavo-convex portions are arranged in a line in the same manner as above,
Moreover, the line direction of the line-shaped corrugated concavo-convex pattern group is variously changed.

(B) Next, a method of forming the image forming body will be described.

A film 3 is arranged on a substrate 1 such as paper,
The ink 2 is applied onto the film 3. This ink 2
Is the desired color. In this way, the substrate 1, the film 3 and the ink 2 are laminated to form the laminated body 8.

Here, the film 3 is, for example, polypropylene polyethylene terephthalate (PBT) as the thermoplastic polyester and polyethylmethacrylate as the thermoplastic resin having a low refractive index, similarly to the above.

Next, the pressing press 5 is lowered and pressed against the laminated body 8. Thereby, the ink 2 and the film 3
An embossed pattern formed on the pressing press 5 is formed on the.

Thus, an image forming body in which the embossed pattern is formed on the ink 2 and the film 3 is prepared.

In the case of such an image forming body, the first
The effect similar to that of the example, that is, the light and shade of each line-shaped uneven pattern group dynamically changes, that is, an opal effect can be continuously produced to produce a very beautiful effect. Due to the interference of the reflected light from each layer of the multilayer thermoplastic resin material in the film 3, a narrow reflected light band spectrum, that is, an iridescent color is exhibited.

That is, since the reflected light band spectrum from the film 3 is reflected according to the inclination of the film surface due to the emboss pattern, when viewed, the portion corresponding to the viewing angle appears to shine in the color of the reflected light band spectrum. , The other part looks like a color in the wavelength band different from the spectrum. Therefore, the image formed with the embossed pattern can be seen due to the difference in brightness and the difference in color.

Therefore, the opal effect only changes shades and brilliance, but it can be observed as if the color changed due to the iridescent effect in tandem with this change in shade and brilliance.

The present invention is not limited to the above embodiments, but may be modified within the scope of the invention.

For example, although the ink 2 is applied in each of the above-mentioned embodiments, it goes without saying that the above effect can be obtained without applying the ink 2.

The cross-sectional shape of the emboss pattern is shown in FIG.
Alternatively, the emboss depth Da of the line-shaped uneven portion may be formed to be (1/2) to (1/4) of the pitch Pa, and the shoulder portion may be sharply formed.

[0061]

As described above in detail, according to the present invention, in addition to the change in shading and brilliance due to the line-shaped uneven pattern group,
It is possible to provide an image forming body which can change the color tone and produce a more beautiful effect, and a method for producing the same.

[Brief description of drawings]

FIG. 1 is a diagram of a first embodiment illustrating a method for creating an image forming body according to the present invention.

FIG. 2 is an external view of an image forming body.

FIG. 3 is a diagram of a second embodiment illustrating a method for forming an image forming body according to the present invention.

FIG. 4 is a diagram showing a modified example of an emboss pattern.

[Explanation of symbols]

1 ... Substrate, 2 ... Ink, 3 ... Film, 4, 8 ... Laminated body, 5 ... Pressing press.

Claims (6)

[Claims] 1. A film having a narrow reflected light band spectrum due to interference of reflected light from these layers, each of which is laminated with a plurality of light-transmitting thermoplastic resin materials having different refractive indexes, and corrugated unevenness Image formation characterized by forming a set of a plurality of line-shaped corrugated concavo-convex pattern groups in which portions are arranged in a line-like pattern, and forming emboss patterns in which the line direction of these line-shaped corrugated concavo-convex pattern groups is variously changed. body. 2. A base material, a dyeing material applied on the base material, and a plurality of light-transmitting thermoplastic resin materials arranged on the dyeing material and having different refractive indexes, respectively, A laminated body was formed from a film having a narrow reflected light band spectrum due to interference of reflected light from the layers, and at least the film of the laminated body had corrugated uneven portions arranged in a line. An image forming body, characterized in that a plurality of groups of linear corrugated concavo-convex pattern groups are assembled and an embossed pattern in which the parallel line directions of these linear corrugated concavo-convex pattern groups are variously changed is formed. 3. A base material, and a plurality of light-transmitting thermoplastic resin materials arranged on the base material and having different refractive indexes, respectively, are laminated, and narrow due to interference of reflected light from these layers. A laminated body is formed from a film having a reflected light band spectrum and a light-transmitting dyeing material applied on the film, and a corrugated unevenness is formed on the film through at least the dyeing material in the laminate. Image formation characterized by forming a set of a plurality of line-shaped corrugated concavo-convex pattern groups in which portions are arranged in a line-like pattern, and forming emboss patterns in which the line direction of these line-shaped corrugated concavo-convex pattern groups is variously changed. body. 4. A step of laminating a plurality of light-transmissive thermoplastic resin materials having different refractive indexes, respectively, to prepare a film having a narrow reflected light band spectrum due to interference of reflected light from these layers. For this film, an embossed pattern in which a plurality of line-shaped corrugated concavo-convex pattern groups in which corrugated concavo-convex portions are arranged in a line are assembled and the line direction of these corrugated corrugated pattern groups is variously changed is formed. And a step of providing the image forming body. 5. A step of applying a dyeing material on a substrate, and after this step, a plurality of light-transmissive thermoplastic resin materials having different refractive indexes are laminated on the dyeing material, and from these layers, A step of arranging a film having a narrow reflected light band spectrum due to interference of reflected light of, and a plurality of groups of linear corrugated concavo-convex pattern groups in which corrugated concavo-convex portions are arranged in a linear pattern at least for the film And a step of applying an embossed pattern in which the line direction of the line-shaped corrugated concavo-convex pattern group is variously changed, and a method for producing an image forming body. 6. A film having a plurality of light-transmitting thermoplastic resin materials each having a different refractive index laminated on a substrate and having a narrow reflected light band spectrum due to interference of reflected light from these layers. And a step of applying a light-transmissive dyeing material on the film, and to the film through at least the dyeing material,
A step of assembling a plurality of line-shaped corrugated concavo-convex pattern groups in which corrugated concavo-convex portions are arranged in a parallel line, and giving an embossed pattern in which the line direction of these line-shaped corrugated concavo-convex pattern groups is variously changed. A method for producing an image forming body, comprising: