JP2784566B2 - Bright printed matter with metallic luster - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bright printed matter having a metallic luster similar to that of metal vapor deposition and a bright printed matter having the metallic luster and exhibiting an embossed appearance. It can be applied to various uses such as a display panel of a device.

[0002]

2. Description of the Related Art Conventionally, as an ink for obtaining a metal color, for example, a metal ink generally called "silver ink" (for example, METAL manufactured by Seiko Advance Co., Ltd.)
LICS), but the conventional metal color ink is obtained by mixing about 1 to 22% of aluminum powder with respect to the binder. It was not possible to obtain a metallic luster at or near the same.

In the above-mentioned metallic ink, the average particle size of the light-reflective fine powder composed of fine powder having excellent light reflectivity such as metal mica, mica, aluminum and the like has a large variation of 5 to 100 μm, and is mixed with the binder. Since the ratio is as low as 20% and the mixing ratio with the diluting solvent is as wide as 0 to 30%, when printed on a transparent polyester (PET) film, for example, the entire surface is irregularly reflected and has a strong glare. No brilliancy with similar metallic luster was obtained.

Means for three-dimensionally expressing characters and designs by printing these metallic color inks as if they were embossed include: (1) embossing by embossing from an old age; Utilizing Takumoto's principle shown in 1-19345, (3) printing ink contains iron oxide particles, and these iron oxide particles are partially aggregated by magnetic force to vary the distribution amount, (4) Light reflecting fine powder in the printing ink is partially aggregated by a high voltage via a conductive metal plate, and the distribution amount is varied to give a three-dimensional appearance.

[0005]

SUMMARY OF THE INVENTION The present invention provides a brilliant printed material having a metallic luster, which cannot be obtained by conventional printing means, by conventional printing means such as screen printing. It is a technical object of the present invention to obtain a bright printed matter having an embossed (irregular) appearance in a state in which characters and patterns have a metallic luster.

[0006] That is, it is impossible to obtain a mirror-like surface state such as vapor deposition even by using a metallic color ink by the conventional printing means. In addition, a ground pattern portion such as a character or a pattern portion of a printed matter is embossed. Each of the above means as a means requires engraving on a metal roll surface, asperity processing on a copper plate, an etching plate, etc., and further requires an electromagnet and a large-scale means for generating a high voltage. In addition, there are many problems such as the fact that it is necessary to incorporate magnetic powder or conductive powder into the ink, so that there is a great limitation in the use of color.

Further, it is not impossible to form various characters and patterns or their borders by vapor deposition. However, complicated masking is required, and a large masking area causes much waste in vapor deposition. It had various problems.

[0008]

SUMMARY OF THE INVENTION The present invention is different from the above-mentioned various means in that a bright ink containing a light-reflective aluminum fine powder prepared according to specific blending conditions is used to obtain a conventional ink such as screen printing. A bright print having the same metallic gloss as the metallic gloss by vapor deposition obtained by the printing means, and if necessary, this metallic gloss portion is made to appear as an embossed appearance as characters, designs, or various ground patterns. It is.

That is, the present invention provides a substrate 1 having a smooth surface.
90% of aluminum powder with a particle size of 5-20 μm on the surface of
The weight ratio of the aluminum powder and the binder made of the transparent resin is 50:10 to 10:30, and the diluting solvent is 5 to 15 times the total weight of the aluminum powder and the binder. This is a brilliant printed matter having a metallic luster formed by partially or entirely printing with the brilliant ink 2.

The present invention also relates to a substrate 1 having a smooth surface.
Aluminum powder having a particle size of 5 to 20 μm or more contained by 90% or more on the entire upper surface or the upper surface of the character or design 3 portion by printing characters or patterns 3 by transparent or colored ink on the surface of The weight ratio of the transparent resin to the binder made of transparent resin is 50:10 to 10:30, and the diluting solvent is used to print the glittering ink 2 5 to 15 times the total weight of the aluminum powder and the binder. Characters and patterns 3
Is a bright printed matter having a metallic luster that appears to be embossed in a convex shape.

Further, the present invention provides, in addition to each of the above-described configurations,
A transparent or colored transparent ink 4 is printed on the surface of the printed portion of the glitter printed material having metallic luster with the glitter ink 2, or a glitter or printed material having metallic luster is obtained by laminating a transparent or colored transparent film 5. is there.

Further, the present invention provides, in addition to the above-described configurations,
This is a glittering printed matter having a metallic luster in which a protective layer 6 made of a transparent ink or a transparent film is provided on the entire printing-side surface of the glittering printed matter having a metallic luster.

Further, the present invention is a bright printed material having a metallic luster, wherein the substrate 1 in each of the above structures is a transparent or colored transparent synthetic resin film or sheet.

Further, in the present invention, the substrate 1 is a transparent or colored transparent film or sheet, and has a metallic luster obtained by providing an opaque colored ink or a colored film 7 on the printing side surface of a bright printed matter. It is a bright printed matter.

Further, according to the present invention, in each of the above-described structures, the metal deposition 8 is applied to either the front surface or the back surface of the base material 1, so that the characters and / or design portions 3 made of transparent ink and the other portions are high. This is a bright printed matter having a metallic luster exhibiting flip-flop properties.

The aluminum powder used in the present invention contains 90% or more of aluminum powder having a particle size of 5 to 20 μm, and is usually provided as dispersed in an organic solvent. The surface may be protected by a wax or an oxidation treatment.
In order to impart dispersion stability in a solvent, a commonly used dispersant may be used in combination, or aluminum powder having the above particle diameter may be directly dispersed in an ink vehicle during the production of a printing ink.

The reason that the aluminum powder used in the present invention contains 90% or more of aluminum powder having a particle diameter of 5 to 20 μm is based on the data of each experimental example shown in Tables 1 and 2.

[0018]

[Table 1]

Table 1 shows that, for six types of aluminum powder having a particle diameter of 5 to 40 μm, the ratio of the aluminum powder to the bonding example was 10:18, and the diluting solvent was 15 times that of the aluminum powder. It shows the degree of gloss. From Table 1, it can be seen that aluminum powder having a particle size of 5 to 20 μm has metallic luster.

[0020]

[Table 2]

Table 2 shows the brightness of the aluminum powder having the same particle diameter as the above-mentioned six kinds when the ratio of the aluminum powder to the binder is 50:10 and the dilution solvent is 10 times the ratio. It shows the degree of gloss of the ink. It can be seen from Table 2 that aluminum powder having a particle diameter of 5 to 20 μm exhibits metallic luster.

Accordingly, it can be seen from Tables 1 and 2 that aluminum powder containing 90% or more of aluminum powder having a particle size of 5 to 20 μm is suitable for the glitter ink in the present invention.

The binder made of a transparent resin used in the present invention must be selected from a polymer material having a high viscosity at a low concentration, and the most suitable one is a soluble cellulose derivative. The degree of polymerization can be arbitrarily selected as long as it is a transparent resin in a commonly used ink material such as an acrylic resin, a polyester resin, a polyurethane resin, and a butyral resin. In addition, as typical cellulose derivatives, alkyl cellulose such as methyl cellulose, ethyl cellulose, propyl cellulose, acetyl butyl cellulose and butyl isobutyl cellulose, and alkylhydroxy cellulose such as hydroxyethyl cellulose are exemplified.

Further, the diluting solvent used in the present invention can be arbitrarily used as long as it dissolves and dilutes the binder to be used, and can be selected by printing means. Examples thereof include methyl alcohol, ethyl alcohol and propyl alcohol. Alcohols such as alcohol and butyl alcohol; ketones such as acetone, isophorone, methyl ethyl ketone and methyl isobutyl ketone; cellosolves such as methyl cellosolve and ethyl cellosolve; and aromatic hydrocarbons such as toluene and xylene As a printing aid and a drying control agent, aliphatic hydrocarbons and ethers which are compatible with these solvents and are usually used as diluents which do not dissolve the binder can also be used.

Further, the substrate used in the present invention includes:
Polyester, acrylic, polycarbonate, vinyl chloride and the like can be used, and the thickness is not limited. Further, the thickness of the printing layer made of the brilliant ink may be about 2 to 10 [mu] m. As a printing method, any conventional means can be used, but screen printing is particularly preferable.

The important point of the present invention is that, first, the aluminum powder contains 90% or more of aluminum powder having a particle diameter of 5 to 20 μm. Although it is possible to use a material smaller than 5 μm, it is very special and hardly available. Second, the ratio of the aluminum powder to the binder is set to 50:10 to 10:30,
If the amount of the binder is less than 50:10, the aluminum powder hardly adheres to the printing base material, and the pattern is distorted in a later process.
If the amount of the binder is too large than 0:30, it is difficult to obtain a metallic glossy aluminum printed surface.

Third, in the present invention, it is important that the amount of the diluting solvent is 5 to 15 times the total weight of the aluminum powder and the binder. If the amount is less than 5 times the weight, the aluminum powder layers do not overlap in an orderly manner and become irregular, and become dark and have a metallic appearance. Conversely, if the amount of the diluted solvent is more than 15 times, the continuity of the aluminum powder particles is lost and the metallic appearance is lost. Does not come out.

That is, in the present invention, by adjusting the particle size of the aluminum powder, the selection and ratio of the binder, and the amount of the diluting solvent used, it is possible to obtain a bright printed matter having a metallic luster comparable to that of metal deposition. By using a transparent colored ink or a transparent colored film in addition to the metallic feeling, a colored metallic print with improved design can be obtained.

[0029]

In the glitter print according to the present invention, the components of the glitter ink 2 to be printed on the surface of the substrate 1 having a smooth surface have a particle diameter 5 smaller than the particle diameter used in the conventional metallic color ink. Aluminum powder containing 90% or more of aluminum powder of about 20 μm, a weight ratio of a binder made of a transparent resin to 50:10 to 10:30, and a diluting solvent of the aluminum powder and the binder. 5 for total weight
By increasing the size by up to 15 times, the printability is good because the particle size of the aluminum powder in the glitter ink is fine and the flowability is high, and a printed matter having a metallic luster close to that of aluminum vapor deposition is obtained.

Therefore, even if delicate characters or patterns 3 are provided on the surface of the base material 1 by screen printing, the resin content in the binder is small, so that it is well adapted to slight irregularities due to the printing, and the characters and patterns 3 etc. It looks as if it was formed by embossing.

Further, the substrate 1 is printed as a transparent film or a transparent sheet having a smooth surface on the surface with the brilliant ink 2, and when the printed portion is viewed from the back surface of the substrate 1, the metallic luster is more than that viewed from the surface. Becomes a mirror surface that can be mistaken for evaporation.

Further, by using a transparent coloring ink or a transparent coloring film, it is possible to obtain a colored metallic print having high designability.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below with reference to the drawings. Example 1 FIG. 1 is a partially enlarged side sectional view showing a basic structure of a glitter print according to the present invention. A colorless and transparent polyester (PET) film having a thickness of 0.2 mm was used as a substrate 1 and its surface (top surface).
A weight ratio of aluminum powder having a particle diameter of 5 μm (hereinafter referred to as “aluminum powder”) and acetyl butyl cellulose (CAB) as a binder is 50:10, and isophorone is used as a diluting solvent (hereinafter referred to as “solvent”). Bright ink 2 which is 10 times the total weight of the aluminum powder and the binder
Was screen-printed at a thickness of 5 μm, and (a)
In the figure, the brilliant ink 2 is printed only on the characters and patterns, and (b) is printed on the entire surface.

The bright printed matter obtained in Example 1 is a printed matter having a metallic luster such as silver when viewed from the front side, and a printed matter having the same high gloss as aluminum vapor deposition when viewed from the back side.

Tables 3 and 4 show the glossiness and printability of the glitter printed material of the glitter printed material of Example 1 as viewed from the back surface of the substrate when the composition of the glitter ink 2 is variously changed.

[0036]

[Table 3]

[0037]

[Table 4]

In Table 3, the ratio of the aluminum powder to the binder was 5%.
0: 5 to 10:30, and the amount of the solvent is 5 to 1
It can be seen that the glitter ink with 5 times has metallic luster. In Table 4, the ratio of the aluminum powder to the binder is 50:10 to 10:30, and the amount of the solvent is 5%.
It can be seen that the brilliant ink at ~ 15 times shows good printing characteristics. Accordingly, Tables 1 to 4 show that as a brilliant ink having a metallic luster and having good printability, an aluminum powder containing 90% or more of an aluminum powder having a particle diameter of 5 to 15 μm and a binder are used. It can be seen that a ratio of 50:10 to 10:30 and the amount of the solvent with respect to the ratio being 5 to 15 times is practical. From the viewpoint of metallic luster alone, those having a ratio of aluminum powder to binder of 50: 5 are particularly excellent, as shown in Table 3, and can be used in this state when printing over the entire surface. However, there is a problem in expressing a delicate pattern, and in such a case, if means for improving printability is adopted, it is considered that practical use will be possible.

Table 5 shows the results of examining the degree of compatibility of various solvents of the brilliant ink 2 with various substrates 1.

[0040]

[Table 5]

Table 5 shows that polyester (PET) is compatible with any solvent, and that isopropyl alcohol (IPA) and cellosolves are compatible with any substrate.

Example 2 FIG. 2 shows that a colorless and transparent PET film having a thickness of 0.2 mm was used as a base material 1 and characters or patterns 3 were screen-printed on the surface thereof with a transparent ink at a thickness of 10 μm, and the upper surface was printed. The glitter ink 2 having the same composition as that used in Example 1 was provided by screen printing. (A) The glitter ink 2 was provided only on the upper surface of a character or a pattern 3, and (b) was the entire upper surface. It is provided in.

The bright printed matter shown in FIG. 2 (a) obtained in Example 2 has, when viewed from the surface, the letters and the pattern 3 parts protruding in a convex shape, as if it were embossed silver. When viewed from the back side, the printed material has a mirror-like high metallic gloss in the letters and the pattern 3 as viewed from the back. FIG. 2 (b)
The shiny printed material shown in Fig. Is entirely silver-stained when viewed from the surface.
A bright printed matter in which the letters and patterns 3 are raised in a convex shape, the letters and patterns 3 are dented in a concave shape when viewed from the back, and the mirror-like metal with the other parts having higher light brightness. The resulting printed material has a different degree of gloss. The difference in the degree of the metallic luster depends on the transparency of the transparent ink for printing the characters and the design 3.

Example 3 FIG. 3 (a) shows an example in which a transparent ink 4 having a thickness of 10 μm is further provided by screen printing on the upper surface of the printed matter shown in FIG. 2 (a) in Example 2. And FIG.
(B) of FIG. 2 in Example 2
The transparent PET film 5 having a thickness of 20 μm is laminated on the entire upper surface of the printed matter shown in FIG.

The bright printed matter shown in FIG. 3A obtained in Example 3 has the structure of Example 2 due to the lens effect of the transparent ink 4 in which the characters and patterns 3 are raised in a convex shape when viewed from the surface. The resulting printed matter has a higher metallic luster than that of the printed matter. The bright printed matter shown in FIG. 3B is a printed matter having a higher metallic luster than the state shown in FIG.

Example 4 FIG. 4 shows the printed matter of Example 1 shown in FIG. 1A in which a protective layer 6 of 10 μm thick transparent ink or transparent film was provided on the entire upper surface of the printed matter. The presence of the layer 6 prevents damage to the glittering ink 2 due to friction and the like, and also achieves the same lens effect as in the third embodiment.

Example 5 The thing shown in FIG. 5 has an opaque colored ink or colored film 7 provided on the entire upper surface of the printed matter shown in FIG. When viewed from the back surface of the material 1, a printed matter having a high gloss in which the characters and the pattern 3 and the other portions are colored and have different degrees of metallic gloss.

Example 6 FIG. 6 shows an example in which the same structure as that of FIG. 3B of Example 3 is printed on the upper surface of the base material 1 on which metal vapor deposition 8 has been previously applied. The printed matter having the configuration is a printed matter exhibiting a high flip-flop property in which the metallic luster of the character or pattern 3 portion and the other portion of the transparent ink changes with the viewing angle when viewed from above.

The above embodiment only shows a part of the structure of the brilliant printed material according to the present invention. Except for the fifth embodiment, the substrate 1 may be opaque and may be a colored transparent material. It may be. Further, the transparent ink 4 or the transparent film 5 in each embodiment may be colored, and the transparent ink forming the characters and the design 3 may be colored,
It may be a mixture of beads, and in some cases, an opaque colored ink.

[0050]

According to the present invention, various bright prints having a mirror surface similar to that of metal deposition or a metallic luster close to metal deposition can be obtained by only ordinary printing means such as screen printing. A bright printed matter having a high flip-flop property, such as a bright printed matter having an embossed appearance, and a colorful bright printed matter can be easily and inexpensively obtained only by the printing means. Therefore, these glitter prints can be widely used for various uses such as various labels and stickers, display panels of various devices, and decorative articles.

[Brief description of the drawings]

FIG. 1 is an enlarged side sectional view of an example of a glitter print according to the present invention.

FIG. 2 is an enlarged side sectional view of another example of a glitter print according to the present invention.

FIG. 3 is an enlarged side sectional view of another example of a glitter print according to the present invention.

FIG. 4 is an enlarged side sectional view of another example of a glitter print according to the present invention.

FIG. 5 is an enlarged side sectional view of another example of a glitter print according to the present invention.

FIG. 6 is an enlarged side sectional view of another example of a glitter print according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 base material 2 brilliant ink 3 characters and patterns 4 transparent ink 5 transparent film 6 protective layer 7 opaque ink or film 8 vapor deposition

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B41M 1/22 G09F 3/02 G09D 11/02

Claims (7)

(57) [Claims] A ratio of an aluminum powder containing 90% or more of an aluminum powder having a particle diameter of 5 to 20 μm on a surface of a substrate 1 having a smooth surface and a binder made of a transparent resin in a weight ratio of 50: A brilliant print having a metallic luster, which is partially or entirely printed with a brilliant ink 2 which is 10 to 10:30 and the dilution solvent is 5 to 15 times the total weight of the aluminum powder and the binder. . 2. A character or pattern 3 made of transparent or colored ink is provided on a surface of a substrate 1 having a smooth surface by printing,
The weight ratio of aluminum powder containing 90% or more of aluminum powder having a particle diameter of 5 to 20 μm to a binder made of a transparent resin is 50:10 to 10 on the entire upper surface or the upper surface of the character or pattern 3 portion. : 30, wherein the diluting solvent is 5 to 15 times the total weight of the aluminum powder and the binder, and the letters and patterns 3 formed by printing the glitter ink 2 are embossed in a convex shape. Bright printed matter with visible metallic luster. 3. A transparent or colored transparent ink 4 or a transparent or colored transparent film 5 is printed on the surface of a printed portion of the glitter printed material having metallic luster according to claim 2 which is printed with the glitter ink 2. Bright printed matter with metallic luster made by laminating. 4. A glittering printed matter having a metallic luster, wherein a protective layer 6 made of a transparent ink or a transparent film is provided on the entire printing-side surface of the glittering printed matter having a metallic gloss according to any one of claims 1 to 3. 5. The bright printed matter having a metallic luster according to claim 1, wherein the substrate 1 is a transparent or colored transparent synthetic resin film or sheet. 6. A bright printed matter having a metallic luster according to claim 5, wherein an opaque colored ink or a colored film 7 is provided on the surface on the printing side. 7. A method according to claim 1, wherein a metal vapor deposition 8 is applied to either the front surface or the back surface of the base material 1, and the characters and / or patterns 3 are made of transparent ink.
The glittering printed matter having a metallic luster according to claim 5 or 6, which exhibits a high flip-flop property in the portion (1) and the other portion.