JP4873674B1 - Screen print - Google Patents

Abstract

Kind Code: A1 To provide a screen printed material that realizes a rich and glossy hairline pattern even in a small lot at a low cost.
A base color portion formed by solid printing of opaque ink on the surface side of a base material, and a metallic ink hairline in which colored ink or transparent medium is mixed with silver powder on the base color portion. It is set as the structure which has the hairline printing part 3 formed by printing, and the transparent solid printing part 4 formed on the said hairline printing part 3 by solid printing of transparent ink.
[Selection] Figure 1

Description

  The present invention relates to a screen printed material having a metallic hairline pattern and a screen printing method.

  A metallic hairline is printed on the back side of a transparent plastic plate using metallic ink. The printed material of the back print that has the order of the layers, the printed surface of the surface that has the metal ground color layer with the solid metallic ink and the design layer of the hairline pattern with the smoke ink on the surface of the transparent plastic plate using the metallic ink It is known (see, for example, Patent Document 1).

Japanese Patent No. 3430069

  However, the conventional surface printing has a problem that the hairline pattern does not give a glossy feeling, and in order to realize a glossy hairline pattern, it is necessary to use a transparent substrate for back printing. In order to realize a glossy hairline pattern, there is a problem that a certain thickness is required for the substrate for back printing.

  In addition, in both the reverse printing and the front printing, there has been a problem that the hairline pattern of the decorative portion can only be seen from one side of the base material because one side is opaque solid coating.

  Further, the metal ground color layer, which is a solid base color, has a problem that the hairline pattern cannot be seen in a metallic tone unless printing is performed using a so-called metallic ink. Metallic inks are limited in color, so there are few variations, and there is a problem that they cannot answer the diverse needs of consumers. Furthermore, metallic ink is 5 to 8 times the price of normal ink, and is very expensive.

  In recent years, there has been a tendency to discontinue production of metals other than general-purpose products. Furthermore, even an aluminum resin composite plate (resin is polyethylene, foamed polyethylene, etc.), which is commonly called Alpoli, whose face material is aluminum, has been discontinued in the production of hairline processing by polishing the surface. On the other hand, customer demands are diversified and small lots. However, since the base material of the metallic hairline pattern was limited to the transparent acrylic plate, when a metal plate having a metal pattern that is not a general-purpose product is desired, a metal plate that meets customer requirements is provided. There was a problem that the cost was high and waste was increased.

  Then, an object of this invention is to provide the screen printed matter and screen printing method which implement | achieve the hairline pattern which is rich in a variation | change richness at low cost even with a small lot.

According to a first aspect of the present invention, on the back side of a transparent substrate, a hairline printing part formed by hairline printing of a metallic ink in which colored ink or transparent medium is mixed with silver powder, and is opaque on the hairline printing part. A base color portion formed by solid ink printing, a white solid print portion formed by white ink solid printing on the base color portion, and a gray ink solid print superimposed on the white solid printing portion. A screen printed matter characterized by having a dark gray printing portion. A glossy hairline pattern can be realized at low cost even in a small lot. In addition, because the color of metallic ink can be varied, variations are enriched. In addition, since the number of processes is small, it is possible to reduce costs.

  Further, a second base color portion formed by solid printing of opaque ink overlaid on the dark gray print portion, and a metallic tone in which colored ink or transparent medium is mixed with silver powder overlaid on the second base color portion. It is preferable to have a 2nd hairline printing part formed by the hairline printing of ink, and a transparent solid printing part formed by the solid printing of the transparent ink on the second hairline printing part. The hairline pattern can be seen from the front side and the back side, and the front side and the back side can be made different patterns.

It is preferable that the base material is a polyethylene terephthalate material, and the opaque ink, the metallic ink, the white ink, and the gray ink are all polyester-based inks. Furthermore, it is preferable that the base material is a polyethylene terephthalate material, and the transparent ink is a polyester-based ink. Alternatively, it is preferable that the base material is an acrylic material, and the opaque ink, the metallic ink, the white ink, and the gray ink are all vinyl chloride-vinyl acetate copolymer / acrylic ink. Furthermore, it is preferable that the base material is an acrylic material, and the transparent ink is a vinyl chloride-vinyl acetate copolymer / acrylic ink. Any color can be expressed by toning using about 1/8 to 1/5 of the metallic ink. Therefore, it can answer various needs of consumers at low cost.

  Furthermore, it is preferable to have a decorative printing part formed by pattern printing on the surface side of the substrate. Or it is preferable to have a decorative printing part formed by printing a pattern on the transparent solid printing part. The pattern may be letters, patterns, or both. The pattern floats and looks three-dimensional.

According to a second aspect of the present invention, on the back side of the base material, a metallic ink in which colored ink or transparent medium is mixed with silver powder is printed with a line plate and dried to form a hairline printing part, and then opaque. Printing the ink on a solid plate and drying to form a base color portion; then printing the white ink on the solid color plate and drying to form a white solid printing portion; A screen printing method is provided, comprising the step of printing a gray ink on a solid plate over the white solid printing portion and drying to form a dark gray printing portion. A rich and glossy hairline pattern can be realized at low cost even in small lots. In addition, since the number of processes is small, it is possible to reduce costs. Further, a step of printing a non-transparent ink with a solid plate and drying to form a second base color portion; then, a metallic tone ink in which a colored ink or a transparent medium is mixed with silver powder on the second base color portion Printing with a line plate and drying to form a second hairline printing unit, then printing a transparent ink with a solid plate over the second hairline printing unit to form a transparent solid printing unit It is preferable to contain. The hairline pattern of the decorative part can be seen from the front side and the back side, and the front side and the back side can be made different patterns.

  According to the screen printed material of the present invention, a hairline pattern with a rich and glossy feeling can be realized at low cost even in a small lot.

It is explanatory drawing of the screen printed matter of Example 1 of this invention. It is explanatory drawing of the screen printed matter of Example 2 of this invention. It is explanatory drawing of the screen printed matter of Example 3 of this invention. It is explanatory drawing of the screen printed matter of Example 4 of this invention.

  Hereinafter, although one embodiment of a screen printed matter of the present invention is described concretely using an example, the present invention is not limited to these.

FIG. 1 is an explanatory diagram of a screen print according to the first embodiment of the present invention. The screen print 7A according to the first embodiment of the present invention is a surface-printing single-sided printing, and a base color portion 2A formed by solid printing of the opaque ink A on the surface side of the base material 1A, and an overlap with the base color portion 2A. Hairline printing part 3A formed by hairline printing of metallic ink A in which colored ink A is mixed with silver powder, and transparent solid printing part 4A formed by solid printing of transparent ink A on the hairline printing part 3A, Have

  The screen print 7A of Example 1 was produced as follows.

  A solid plate was attached to a screen printing machine, and a white vinyl chloride plate having a thickness of 5.0 mm having a smooth front and back surface as a base material 1A was placed at a printing position with the front side being the printing surface facing up. In Example 1, the base material 1A is a plate material, but it may be uneven, may be a molded product or a three-dimensional object, may be thin like a sticker, and the color is other than white. It can be a free color or pattern such as red or green, and is not limited. Unlike conventional hairline printing, the substrate does not need to be transparent.

  As opaque ink A, colored vinyl chloride-vinyl acetate copolymer / acrylic ink (VAR series 391 (blue): Teikoku Mfg. Co., Ltd.) is used to adjust the viscosity and place it on the plate. The substrate 1A was solid-printed and dried with a drying rack. The color of the opaque ink A can be selected from 30 or more colors such as red, blue, yellow, purple, white, black, and can be mixed and toned. Unlike conventional hairline printing, the color is not limited to white or black. The color of the transparent ink A becomes the base color of the screen print 7A. In the case of ink that requires drying by heating, the ink is dried by heating in a drying kettle. The printed layer formed here is defined as a base color portion 2A.

  Next, a line plate for forming a hairline pattern was attached to the screen printing machine, and the substrate 1A was placed at the printing position with the side on which the base color portion 2A was printed facing up.

  Silver powder (Lotos silver: manufactured by Mino Group Co., Ltd.) and colored ink A were mixed to prepare metallic ink A. It is preferable to mix colored ink A at a ratio of 400 to 700 parts by weight with respect to 100 parts by weight of silver powder. As the colored ink A, a colored vinyl chloride-vinyl acetate copolymer / acrylic ink (VAR series 391 (blue): manufactured by Teikoku Ink Manufacturing Co., Ltd.) was used. As for the colored ink A, as in the case of the opaque ink A, the color can be selected from 30 or more colors such as red, blue, yellow, purple, white and black, and can be mixed and toned. Therefore, it is possible to meet the demand for delicate colors. The silver powder may be spherical, needle-shaped, flat plate-shaped, indeterminate, or the like, and any shape can be used as long as it passes through the plate mesh when printing ink with a squeegee. In addition, the finer one has a better texture of the printed matter and increases the design.

  The viscosity of the metallic ink A was adjusted and placed on the plate, and hairline printing was performed from above the base color portion 2A using a squeegee, and dried on a drying rack. Unlike conventional hairline printing, it is possible to print freely colored hairlines. The color of the metallic ink A including the colored ink A becomes the color of the hairline of the screen print 7A. Let the printed layer formed here be the hairline printing part 3A.

  Next, the solid plate was attached to a screen printer, and the substrate 1A was placed at the printing position with the side on which the hairline printing unit 3A was printed facing up.

  As transparent ink A, a transparent vinyl chloride-vinyl acetate copolymer / acrylic ink (VAR series 000 (medium): Teikoku Mfg. Co., Ltd.) is used to adjust the viscosity and place it on the plate, using a squeegee Solid printing was performed from the top of the hairline printing unit 3A, and drying was performed using a drying rack. In the case of ink that requires drying by heating, the ink is dried by heating in a drying kettle. The color of the transparent ink A produces the gloss of the screen print 7A. Let the printing layer formed here be the transparent solid printing part 4A. Unlike conventional hairline printing, the hairline with a glossy surface is realized by surface printing, and the hairline printing part 3A is coated with the transparent solid printing part 4A, so durability is improved. It has both a sealing effect and improved saturation and brightness, preventing deterioration and oxidation due to ultraviolet rays, and improving the light resistance of the printed matter.

  According to the first embodiment, the hairline can be shaded to give an impression that it is a shiny metallic surface with a polishing mark, and further, a free-colored hairline can be obtained. The shadow depth and the overall impression can be varied by combining the colors of the part and the base color part. By adding colors to the base color part and the hairline printing part, the hairline can be clearly seen and the metal feeling and clearness can be increased.

  In Example 1, 50 to 300 mesh screens were used for both the solid and line plates, and 50 to 300 mesh screens were used for both the solid and line plates, and each printing layer was formed with a thickness of 5 to 100 μm. The thickness is not limited to this. The hairline has a width of 10 to 100 μm, but is not limited thereto.

{effect}
According to the first embodiment of the present invention, a hairline pattern with a rich and glossy feeling can be realized even at a small lot at a low cost.

  More specifically, it is possible to realize a hairline pattern with a glossy surface. Further, the substrate is not limited to a transparent acrylic plate, and may be transparent or opaque, and not only the acrylic plate but also other plastic plates and metal plates can be used. Furthermore, even a thin object such as a sticker can achieve a glossy hairline pattern by surface printing.

  In addition, for the solid base color layer, any color can be expressed by toning using an ink whose price is about 1/8 to 1/5 that of metallic ink. Therefore, it is not necessary to use expensive metallic ink, and the cost is reduced. Various metallic hairline patterns can be realized. Therefore, it can answer various needs of consumers at low cost.

  Even if a metal plate with a metal pattern that has been discontinued or is not a general-purpose product is desired, the desired hairline pattern is decorated on the metal of the general-purpose product, and the pattern that meets the customer's request A metal plate can be provided. This eliminates the need to produce unnecessary items, thereby reducing unnecessary costs and contributing to ecology.

  Also, printing is possible not only on flat surfaces but also on curved surfaces, special shapes, and molded products.

  Furthermore, since the transparent printing layer is provided on the outermost side, the transparent printing layer becomes a coat layer, and durability is added.

(Modification 1-1)
The screen printed material 7A of Example 1 was printed in three layers, but further, the characters and patterns were screen printed with opaque ink on the transparent solid printing portion 4A and dried to print the pattern. You may form the decorative printing part formed by. When the decorative printing part was formed, the effect which the character and pattern of the decorative printing part rose and it looked three-dimensionally was provided.

(Modification 1-2)
If you want to make a silver hairline pattern instead of a colored hairline such as blue or red, in the hairline printing section 3A of Example 1, transparent media A instead of colored ink A, transparent vinyl chloride-vinyl acetate Copolymer / acrylic ink (VAR series 000 (medium): manufactured by Teikoku Ink Mfg. Co., Ltd.), base color part 2A, opaque ink A, dark gray vinyl chloride-vinyl acetate copolymer A metallic gray ink in which silver powder (Lotos silver: manufactured by Mino Group) was mixed with acrylic ink (VAR series 911 (black): manufactured by Teikoku Ink Manufacturing Co., Ltd.) was used. In such a metallic gray ink, it is preferable to mix a dark gray vinyl chloride-vinyl acetate copolymer / acrylic ink at a ratio of 400 to 700 parts by weight with respect to 100 parts by weight of silver powder.

(Modification 1-3)
In Example 1, the base material 1A is made of vinyl chloride, but the base material is made of metal such as aluminum or stainless steel, but acrylic resin, polycarbonate resin, polyethylene terephthalate (PET) resin, polyethylene, polypropylene, or polycarbonate. It may be made of plastic such as a composite material. When the substrate is made of vinyl chloride, it is preferable that all inks to be printed are vinyl chloride-vinyl acetate copolymer / acrylic ink. Moreover, when the base material is an aluminum resin composite plate whose face material is aluminum, it is preferable that all inks to be printed are acrylic polyol-based inks. For example, acrylic polyol-based ink (POS series: Teikoku Ink Mfg. Co., Ltd.) may be mentioned for a white aluminum resin composite plate (Alpolic (white): manufactured by Mitsubishi Plastics Co., Ltd.) By combining these, it was possible to realize a screen print with good printing characteristics and clear hairline without swelling, cracking, or bleeding.

  FIG. 2 is an explanatory diagram of a screen printed material according to the second embodiment of the present invention. The screen printed material 7B of Example 2 of the present invention is such that the back side of the base material 1A of Example 1 is further printed so that the pattern can be seen from both sides. Specifically, the screen printed material 7B is opaque on the front side of the base material 1A. A base color portion 2A formed by solid printing of ink A, and a hairline printing portion 3A formed by hairline printing of metallic tone ink A in which colored ink A or transparent medium A is mixed with silver powder overlaid on base color portion 2A And a transparent solid printing portion 4A formed by solid printing of the transparent ink A on the hairline printing portion 3A, and further, a base color formed by solid printing of the opaque ink B on the back side of the substrate 1A Part 2B, hairline printing part 3B formed by hairline printing of metallic ink B in which colored ink B or transparent medium B is mixed with silver powder on top of base color part 2B, and hairline And a transparent solid print portion 4B which overlapped on the printing unit 3B is formed by solid printing of invisible ink B.

  The screen print 7B of Example 2 was produced as follows.

  The screen printed product 7A of Example 1 was turned over on a screen printing machine and placed at the printing position with the back side of the substrate 1A, which is the printing surface, facing up.

  As opaque ink B, colored vinyl chloride-vinyl acetate copolymer / acrylic ink (VAR series 163 (red): Teikoku Mfg. Co., Ltd.) is placed on the plate after adjusting the viscosity, and using a squeegee The substrate 1A was solid-printed and dried with a drying rack. As with the opaque ink A, the color of the opaque ink B can be selected from a large number of colors, and the color can be adjusted. Unlike conventional back-printed hairline printing, hairline printing is not performed directly on the substrate 1A. The color of the opaque ink A becomes the base color on the front side of the screen print 7B, and the color of the opaque ink B becomes the base color on the back side of the screen print 7B. In the case of ink that requires drying by heating, the ink is dried by heating in a drying kettle. Let the printing layer formed here be the base color part 2B. The opaque ink A and the opaque ink B may have the same color or different colors.

  Next, a line plate for forming a hairline pattern was attached to the screen printing machine, and the substrate 1A was placed at the printing position with the side on which the base color portion 2B was printed facing up.

  Silver powder (Lotos silver: manufactured by Mino Group Co., Ltd.) and colored ink B were mixed to prepare metallic ink B. In Example 2, the metallic tone ink B is the same as the metallic tone ink A, but may be a different color.

  The viscosity of the metallic ink B was adjusted and placed on the plate, and hairline printing was performed from above the base color portion 2B using a squeegee, and dried on a drying rack. Unlike conventional hairline printing, it is possible to print freely colored hairlines. The color of the metallic ink B including the colored ink A becomes the color of the hairline on the back side of the screen printed product 7B. Let the printed layer formed here be the hairline printing part 3B.

  Next, the solid plate was attached to a screen printer, and the substrate 1A was placed at the printing position with the side on which the hairline printing unit 3B was printed facing up.

  As the transparent ink B, a transparent vinyl chloride-vinyl acetate copolymer / acrylic ink (VAR series 000 (medium): Teikoku Mfg. Co., Ltd.) is used to adjust the viscosity and place it on the plate, using a squeegee Solid printing was performed from the top of the hairline printing unit 3B, and drying was performed using a drying rack. In the case of ink that requires drying by heating, the ink is dried by heating in a drying kettle. The color of the transparent ink B produces a gloss on the back side of the screen print 7B. Let the printing layer formed here be the transparent solid printing part 4B. Unlike conventional hairline printing, the hairline with a glossy feeling was realized on both sides of the base material, and the hairline printing part 3B was coated with the transparent solid printing part 4B, so durability was improved. It has both a sealing effect and improved saturation and brightness, preventing deterioration and oxidation due to ultraviolet rays, and improving the light resistance of the printed matter.

  In Example 2, 50 to 300 mesh screens were used for both the solid and line plates, and each printing layer was formed to have a thickness of 5 to 100 μm. However, the mesh and thickness are not limited thereto. The hairline has a width of 10 to 100 μm, but is not limited thereto.

{effect}
According to the second embodiment of the present invention, in addition to the effects of the first embodiment described above, the hairline pattern of the decorative portion can be seen from the front surface and the back surface, and the front surface side and the back surface side can be made different patterns. It became possible, and the variation became rich at low cost.

(Modification 2-1)
In addition, in the screen printed matter 7B of Example 2, the double-sided printing of the front surface 3 layers and the back surface 3 layers was performed, but further, characters and patterns were screen printed with opaque ink from above the transparent solid printing portion 4B. Then, it may be dried to form a decorative printing portion formed by pattern printing. The character and the pattern can be lifted to give an effect of making it appear three-dimensional.

  Moreover, when it is desired to make the back side into a silver hairline pattern, it is preferable to use a transparent medium instead of the colored ink B and a non-transparent ink B as a metallic gray ink as shown in Modification 1-2. . The combination of the base material and the ink is the same as the ink on the front side with respect to the ink on the back side.

  FIG. 3 is an explanatory diagram of a screen printed material according to the third embodiment of the present invention. The screen printed product 7C of Example 3 of the present invention is a single-sided printing on the back side, and is formed by hairline printing of metallic ink in which colored ink or transparent medium is mixed with silver powder on the back side of the transparent substrate 1C. A base color portion 2C formed by solid printing of opaque ink on the printing portion 3C and the hairline printing portion 3C, a white solid printing portion 5C formed by solid printing of white ink on the base color portion 2C, and a white solid A dark gray printing portion 6C formed by solid printing of gray ink on the printing portion 5C.

  The screen print 7C of Example 3 was produced as follows.

  A line plate for forming a hairline pattern is attached to a screen printer, and a base material 1C is a colorless and transparent polyethylene terephthalate (PET) plate having a thickness of 0.5 mm with a smooth front and back surface. It was placed in the printing position with the back side up. In Example 3, the base material 1C is a plate material, but may be uneven, may be a molded product or a three-dimensional object, may be thin like a sticker, and is colorless and transparent. It may be transparent.

  Silver powder (Lotos silver: manufactured by Mino Group) and colored ink C were mixed to prepare metallic ink C. It is preferable to mix colored ink C at a ratio of 400 to 700 parts by weight with respect to 100 parts by weight of silver powder. As the colored ink C, a colored polyester ink (EG series 420 (shallow blue): manufactured by Teikoku Mfg. Co., Ltd.) was used. As for the colored ink C, as in the case of the opaque ink A, the color can be selected from 30 or more colors such as red, blue, yellow, purple, white and black, and can be mixed and toned. Therefore, it is possible to meet the demand for delicate colors. The silver powder may be spherical, needle-shaped, flat plate-shaped, indeterminate, or the like, and any shape can be used as long as it passes through the plate mesh when printing ink with a squeegee.

  The viscosity of the metallic ink C was adjusted and placed on a plate, hairline printed on the substrate 1C using a squeegee, and dried on a drying rack. Unlike conventional hairline printing, it is possible to print freely colored hairlines. The color of the metallic ink C including the colored ink C becomes the color of the hairline of the screen print 7C. Let the printed layer formed here be the hairline printing part 3C.

  Next, as the opaque ink C, a colored polyester ink (EG series 221 (yellow): Teikoku Mfg. Co., Ltd.) is placed on the plate after adjusting the viscosity, and superimposed on the hairline printing unit 3C using a squeegee. The solid was printed and dried in a drying rack. As with the opaque ink A, the color of the opaque ink C can be selected from a large number of colors, and the color can be adjusted. The color of the opaque ink C becomes the base color of the screen print 7C. In the case of ink that requires drying by heating, the ink is dried by heating in a drying kettle. Let the printing layer formed here be the base color part 2C. Unlike conventional back printing, the metallic color is not used for the base color portion, so the cost is reduced. Also, unlike conventional back-printing, where the color of the base color part must be the same as the color of the hairline printing part, the color of the base color part can be changed by changing the color of the hairline printing part. Becomes richer. The opaque ink C and the colored ink C are different colors and may be the same color.

  Next, solid printing of the white ink C was performed on the base color portion 2C. As white ink C, white polyester-based ink (EG series 611 (white conch): manufactured by Teikoku Ink Manufacturing Co., Ltd.) is placed on the plate after adjusting the viscosity, and is layered on the base color portion 2C using a squeegee. Printed and dried in a drying rack. Let the printing layer formed here be the white solid printing part 5C.

  Next, solid printing of the gray ink C was performed on the white solid printing portion 5C. As gray ink C, gray polyester-based ink (EG series 911 (black): Teikoku Ink Mfg. Co., Ltd.) is used to adjust the viscosity and place it on the plate. Printed and dried in a drying rack. The print layer formed here is a dark gray print portion 6C.

  Incident light from the surface of the substrate 1C passes through the substrate 1C and is reflected by the white solid printing portion 5C. This creates a shadow on the hairline, gives the impression that it is a shining metallic surface with a polishing mark, and makes it possible to create a free-colored hairline. With the combination of colors, the depth of the shadow and the overall impression could be changed. In addition, since the number of manufacturing processes is less than that of conventional back printing, cost reduction can be realized. By adding colors to the base color part and the hairline printing part, the hairline can be clearly seen and the metal feeling and clearness can be increased.

  In Example 3, both a solid plate and a line plate were used with a screen of 50 to 300 mesh, and each printing layer was formed with a thickness of 5 to 100 μm. However, the mesh and thickness are not limited thereto. The hairline has a width of 10 to 100 μm, but is not limited thereto.

{effect}
According to the third embodiment of the present invention, a hairline pattern having a rich and glossy feeling can be realized even in a small lot at a low cost.

  More specifically, a hairline pattern with a glossy feeling can be realized at a low cost. Moreover, if a base material is transparent, not only an acrylic board but another plastic board can be used. Furthermore, even a thin material such as a sticker can realize a glossy hairline pattern at a low cost.

  For the solid base color layer, any color can be expressed by toning using about 1/8 to 1/5 of the metallic ink. Therefore, it is not necessary to use expensive metallic ink, and the cost is reduced. Various metallic hairline patterns can be realized. Therefore, it can answer various needs of consumers at low cost.

  Also, printing is possible not only on flat surfaces but also on curved surfaces, special shapes, and molded products.

  In reverse printing, a solid-colored metallic ink layer has conventionally been required, but this is not necessary, so the cost can be reduced. In addition, since the number of processes is small, further cost reduction is possible.

(Modification 3-1)
The screen printed material 7C of Example 3 was printed in three layers. However, on the surface of the substrate 1C, characters and patterns were screen-printed with an opaque ink and dried to print a pattern. You may form the decorative printing part formed. When the decorative printing part was formed, the effect which the character and pattern of the decorative printing part rose and it looked three-dimensionally was provided.

(Modification 3-2)
In addition, when it is desired to make a silver hairline pattern instead of a colored hairline such as blue or red, a transparent polyester ink (EG) is used as a transparent medium C in place of the colored ink C in the hairline printing section 3C of Example 3. Series 000 (medium): made by Teikoku Ink Manufacturing Co., Ltd., and the base color part 2C, as the opaque ink C ', dark gray acrylic ink (EG series 911 (black): made by Teikoku Ink Co., Ltd.) ) And a metallic gray ink in which silver powder (Lotos silver: manufactured by Mino Group) was mixed. In such a metallic gray ink, it is preferable to mix a dark gray acrylic ink at a ratio of 400 to 700 parts by weight with respect to 100 parts by weight of silver powder.

(Modification 3-3)
In Example 3, the base material 1C is made of polyethylene terephthalate. However, the base material may be made of other plastics such as acrylic resin, polyethylene, polypropylene, and polycarbonate as long as it is transparent. When the substrate is made of acrylic, it is preferable that all inks to be printed are vinyl chloride-vinyl acetate copolymer / acrylic ink. For example, a vinyl chloride-vinyl acetate copolymer / acrylic ink (VAR series: manufactured by Teikoku Ink Manufacturing Co., Ltd.) can be used for a transparent acrylic resin composite plate. By combining these, it was possible to realize a screen print with good printing characteristics and clear hairline without swelling, cracking, or bleeding.

{Constitution}
FIG. 4 is an explanatory diagram of a screen printed material according to the fourth embodiment of the present invention. The screen printed material 7D of Example 4 of the present invention is such that the back side (outside) of the dark gray printing part of Example 3 is further printed so that the pattern can be seen from both sides. Hairline printing part 3C formed by hairline printing of metallic ink in which colored ink or transparent medium is mixed with silver powder, and base color part 2C formed by solid printing of opaque ink on hairline printing part 3C. And a solid white printing portion 5C formed by solid white printing on the base color portion 2C, and a dark gray printing portion 6C formed by solid white printing on the white solid printing portion 5C. In addition, a base color portion 2D formed by solid printing of opaque ink overlaid on the dark gray print portion 6C, and a colored ink or transparent medium over the silver powder overlaid on the base color portion 2D. Having combined hairline printing unit 3D are formed by hairline printing metallic ink, and a transparent solid print portion 4D is formed by solid printing of invisible ink overlaid on hairline printing unit 3D.

  The screen print 7D of Example 4 was produced as follows.

  On the screen printing machine, the back side of the screen printed material 7C of Example 3, that is, the side on which the dark gray printing portion 6C of the substrate 1C was printed was placed at the printing position.

  As opaque ink D, colored polyester ink (EG series 221 (yellow): Teikoku Mfg. Co., Ltd.) is used to adjust the viscosity and place it on the plate. Solid printing on 6C using a squeegee and drying Dry in a rack. As with the opaque ink A, the color of the opaque ink D can be selected from a large number of colors, and the color can be adjusted. Unlike conventional back-printed hairline printing, printing is further performed on the dark gray printing portion 6C. The color of the opaque ink C becomes a base color that can be seen from the front side of the screen print 7C, and the color of the opaque ink D becomes a base color that can be seen from the back side of the screen print 7B. In the case of ink that requires drying by heating, the ink is dried by heating in a drying kettle. Let the printing layer formed here be the base color part 2D. The opaque ink C and the opaque ink D may have the same color or different colors.

  Next, a line plate for forming a hairline pattern was attached to a screen printer, and the side on which the base color portion 2D of the base material 1C was printed was placed on the printing position.

  Silver powder (Lotos silver: manufactured by Mino Group) and colored ink D were mixed to prepare metallic ink D. In Example 4, the metallic tone ink D is the same as the metallic tone ink C, but may be a different color.

  The metallic ink D was adjusted on the viscosity, placed on the plate, printed on the base color portion 2D using a squeegee, and dried on a drying rack. Unlike conventional hairline printing, it is possible to print freely colored hairlines. The color of the metallic ink D including the colored ink D becomes the color of the hairline that can be seen from the back side of the screen print 7D. Let the printed layer formed here be the hairline printing part 3D.

  Next, the solid plate was attached to a screen printer, and the substrate 1C was placed at the printing position with the side on which the hairline printing unit 3D was printed facing up.

  As the transparent ink D, transparent polyester-based ink (EG series 000 (medium): Teikoku Ink Mfg. Co., Ltd.) is used to adjust the viscosity and place it on the plate. And dried with a drying rack. In the case of ink that requires drying by heating, the ink is dried by heating in a drying kettle. The color of the transparent ink D produces a gloss on the back side of the screen print 7D. Let the printing layer formed here be the transparent solid printing part 4D. Unlike conventional hairline printing, the hairline with a glossy feeling is realized on both sides of the substrate, and the hairline printing part 3D is coated with the transparent solid printing part 4D, so the durability is improved. It has both a sealing effect and improved saturation and brightness, preventing deterioration and oxidation due to ultraviolet rays, and improving the light resistance of the printed matter.

  In Example 4, 50 to 300 mesh screens were used for both the solid and line plates, and each printing layer was formed to have a thickness of 5 to 100 μm. However, the mesh and thickness are not limited thereto. The hairline has a width of 10 to 100 μm, but is not limited thereto.

{effect}
According to Example 4 of the present invention, in addition to the effects of Example 3 described above, a hairline pattern with a glossy feeling on both surfaces of the substrate can be realized only by back printing. It is also possible to make the front side and the back side different patterns.

  Furthermore, since the transparent printing layer is provided on the outermost side, the transparent printing layer becomes a coat layer, and durability is added.

(Modification 4-1)
In addition, in the screen printed material 7D of Example 4, although it was hairline printing which can be seen from both surfaces of the base material with the back side 3 layers plus 3 layers of the base material, it is further transparent with an opaque ink from above the transparent solid print portion 4D. A decorative printing unit formed by printing a pattern may be formed by screen printing characters and patterns and drying them. When the decorative printing part was formed, the effect that the characters and patterns of the decorative printing part emerged and looked three-dimensionally even when viewed from the back surface was given.

(Modification 4-2)
In addition, when it is desired to make the silver hairline pattern visible from the back side, a transparent medium is used instead of the colored ink D, and the opaque ink D is a metallic gray ink as shown in Modification 3-2. It is preferable. The combination of the base material and the ink is the same as the ink visible from the front side with respect to the ink visible from the back side.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention. In addition, the constituent elements of the above embodiments can be arbitrarily combined without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 Base material 2 Base color part 3 Hairline printing part 4 Transparent solid printing part 5 White solid printing part 6 Dark gray printing part 7 Screen printed matter

Claims (10)

  A hairline printing part formed by hairline printing of metallic ink in which colored ink or transparent medium is mixed with silver powder on the back side of a transparent substrate, a base formed by solid printing of opaque ink overlaid on the hairline printing part A color portion, a white solid print portion formed by solid printing of white ink overlaid on the base color portion, and a dark gray print portion formed by solid print of gray ink superimposed on the white solid print portion Screen printed matter characterized by. A second base color portion formed by solid printing of opaque ink overlaid on the dark gray print portion, and a metallic tone ink in which colored ink or transparent medium is mixed with silver powder overlaid on the second base color portion. second hairline printing portion formed by hairline printing, screen according to claim 1, wherein a said second transparent solid printing portion formed by solid printing of invisible ink overlaid on hairline printing unit Printed matter. The base material is a polyethylene terephthalate material, and the opaque ink, the metallic ink, the white ink, and the gray ink are all polyester-based inks. Screen print. The screen printed matter according to claim 2 , wherein the base material is a polyethylene terephthalate material, and the transparent ink is a polyester-based ink. The base material is an acrylic material, and the opaque ink, the metallic ink, the white ink, and the gray ink are all vinyl chloride-vinyl acetate copolymer / acrylic ink. Item 3. A screen printed material according to item 1 or 2 . The screen printed matter according to claim 2 , wherein the substrate is an acrylic material, and the transparent ink is a vinyl chloride-vinyl acetate copolymer / acrylic ink. The screen printed matter according to claim 1 or 2, further comprising a decorative printing portion formed by printing a pattern on the surface side of the base material. The screen printed matter according to claim 2 , further comprising a decorative printing portion formed by printing a pattern so as to overlap the transparent solid printing portion.   On the back side of the base material, a step is performed to form a hairline printing part by printing a metallic ink in which colored ink or transparent medium is mixed with silver powder on a line plate, followed by drying, followed by printing an opaque ink on a solid plate and drying it. Forming a base color portion, and then printing a white ink on the base color portion and drying it to form a white solid print portion, and then overlaying the white solid print portion. A screen printing method comprising a step of printing a gray ink with a solid plate and drying to form a dark gray printing portion. Further, a step of printing a non-transparent ink with a solid plate and drying to form a second base color portion; then, a metallic tone ink in which a colored ink or a transparent medium is mixed with silver powder on the second base color portion Printing with a line plate and drying to form a second hairline printing unit, then printing a transparent ink with a solid plate over the second hairline printing unit to form a transparent solid printing unit The screen printing method according to claim 9 , further comprising:

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