KR20160077826A - Metal screen printing plate, a screen print manufactured, and method of printing a screen prints by using thereof - Google Patents

Abstract

The present invention relates to a metal screen printing plate, a screen print manufactured using the same, and a method for printing a screen print using the same. More particularly, the metal screen printing plate has a non-uniform size of pores in a mesh and, particularly, a size gradually changing in one direction or multiple directions. The metal screen printing plate has patterns, shapes, letters, and numbers which are formed to achieve a gradation effect by using a pigment having multiple particle sizes corresponding to the size of the pores, thereby having an anti-forgery effect while having enhanced durability.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal screen printing plate, a screen printing product manufactured using the same, and a method of printing a screen printing product using the screen printing plate,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal screen printing plate having gradation effect by progressively changing the size of a pore, a screen printing made using the same, and a method of printing a screen printing using the screen printing.

Conventional metal screen printing plates are manufactured by coating a photosensitive resin on a mesh plate made of stainless steel or the like and applying a photomask thereto to expose and cure the photosensitive resin selectively with ultraviolet rays (UV) The photosensitive resin is patterned to form numbers and letters. However, since the size of the mesh is constant, the numbers and characters formed are monotonous, and the effect of preventing forgery is weak.

In addition, the conventional screen printing plate has problems in that the photosensitive resin is dropped or worn out due to the printing pressure, deformation of the mesh, cleaning solution of the ink, and the like, which are low in durability.

In addition, in the case of a conventional woven-type wire mesh, bending is generated due to a difference in position between the wires, and an unnecessary mark is formed or damaged in the printed body.

Korean Patent Laid-Open Publication No. 10-2011-0108197 discloses a metal screen printing plate and a mandrel for manufacturing a mesh, and Korean Patent Laid-Open Publication No. 10-2011-0067616 also repeats the plating process several times, A screen printing plate having greatly improved durability is disclosed. However, these documents also have a problem that the size of the mesh is constant and gradation effect can not be given.

Korea Patent Publication No. 10-2011-0108197 Korean Patent Publication No. 10-2011-0067616

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a metal screen printing apparatus capable of providing a gradation effect by forming patterns, figures, letters and numbers using a mold having pores of various sizes, And a method of printing a printed matter using the same.

According to an aspect of the present invention, there is provided a metal screen printing plate, wherein pores on the metal screen printing plate are unevenly formed.

The size of the pores may gradually change from one side to the other side.

The density of the pores may gradually change from one side to the other side.

The diameter of the pores may be 10 to 150 mu m.

The pores may form a pattern, a letter, a figure or a numeral having a diameter of 10 to 50 탆 or a pore of 100 to 150 탆.

According to another aspect of the present invention, there is provided a screen printing method using ink mixed with two or more pigments having different sizes, colors, sizes and types of particles.

The pigment may be a mixture of a gold metallic pigment and a color-changing pigment.

The average particle size of the gold methotic pigment may be 10 to 50 탆, and the average particle size of the color conversion pigment may be 100 to 150 탆.

According to another aspect of the present invention, there is provided a method of printing a screen print using the metal screen printing plate.

As described above, the metal screen printing plate according to the present invention, the screen printing material manufactured using the same, and the method for printing the screen printing material using the same are suitable for a printing method in which the sizes of the pores of the mesh are uneven, A pattern, a figure, a letter, and a numeral are formed by using a pigment having a multi-particle size corresponding to the size, thereby making it possible to provide a gradation effect and provide an anti-falsification effect and an effect of improving durability .

1 shows a metal screen printing plate according to the present invention.
Fig. 2 shows a screen print using the metal screen printing plate of Fig.
FIG. 3 is a front view of a screen print of an ink in which a gold metallic pigment and a color conversion pigment are mixed using the metal screen printing plate of FIG. 1;
FIG. 4 is a side view of a screen print of an ink mixed with a gold metallic pigment and a color conversion pigment using the metal screen printing plate of FIG. 1;

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

First, a metal screen printing plate according to the present invention will be described.

1 shows a metal screen printing plate according to the present invention.

The metal screen printing plate may be formed in a planar shape, but is not limited thereto, and may be formed in various shapes suitable for a roll shape or a screen printing apparatus to be used. In addition, the metal screen printing plate may be formed of a metal material, more specifically, at least one selected from copper, nickel, gold, platinum, silver, aluminum and chromium, More preferable is selected. When the screen printing plate is selectively plated, the printing properties and the durability can be improved.

FIG. 1 shows a first embodiment of the invention according to the present invention. In FIG. 1, a metal screen printing plate according to the present invention is formed with uniform pores in a screen. That is, the pore size gradually changes from one side to the other side. When the metal screen printing plate thus formed is used, the gradation effect can be expressed in two ways.

In the first method, since the amount of ink passing through the screen gradually changes due to the size of the pores, a portion having a large pore size is displayed in a dark color, and a portion having a small pore size is printed softly to improve the gradation effect have. However, the gradation effect by this method is poor compared with the second method.

In the second method, when a mixture of a large particle pigment and a small particle pigment is used, the large particles pass through only large pores, while the small particles pass through both large pores and small pores, so that from a large pore portion to a small pore portion The gradation effect is naturally produced in the color of the pigment in which the small particle and the large particle are mixed in the color of the large particle pigment.

In the second embodiment according to the present invention, it is possible to form a certain pattern, letter, figure, number, etc. with relatively large pores and small pores. In this case also, the color in which the large pore portion and the small pore portion are expressed is different.

In the third embodiment according to the present invention, a certain pattern, letter, figure and numeral, etc. are formed with relatively large pores and small pores, and a large pore region and a small pore region are formed in the same direction as in the first embodiment, The size gradually changes so that not only the color in which the large pore portion and the small pore portion are expressed but also the gradation effect can be expressed at the same time.

The present invention is not limited to the above-described first to third embodiments, and can be modified and used in various forms utilizing the above technical idea.

In the present invention, the pore diameter is preferably 10 to 150 mu m, more preferably 50 to 100 mu m. More specifically, the small pores may have a diameter of 10 to 50 mu m, and the large pores may have a diameter of 100 to 150 mu m.

In order to develop gradual gradation effects, the smallest pore diameter is selected within the range of 10 to 50 mu m, and the largest one is selected within the range of 100 to 150 mu m.

The reason why the pores are selected as described above is that when the diameter of the small pores is less than the above range, the pores are too small to be printed, and when the size of the small pores is larger than the above range, A sufficient gradient effect can not be obtained. On the contrary, when the diameter of the large pore is less than the above range, it is difficult to obtain a sufficient gradation effect because it is similar to the size of the small pore. When the size of the large pore exceeds the above range, And the print quality may deteriorate.

It is preferable that the pore portion or the large pore portion having a relatively small pore size forms a certain pattern, letter, figure or number. As shown in FIG. 1, the anti-counterfeiting function can be improved by forming gradations or the like while forming a pattern, letter, figure or number with pores of various sizes.

Also, the metal screen printing plate according to the present invention may form a multi-gradation effect by forming repeated patterns, figures, letters, and numbers using a mold having patterns of various sizes.

In order to effectively achieve such effects, it is preferable to use an ink in which two or more pigments having different sizes and colors, sizes and types of particles are mixed with the screen print produced by printing with the metal screen printing plate according to the present invention.

At this time, the pigment can be used by mixing a gold metallic pigment and a color conversion pigment having different average particle sizes. In this case, the color of gold metallic pigment, which is a small pigment, is realized in a small region of pores, and a mixed color of gold metallic pigment, which is a small pigment, and a color conversion pigment, which is a large pigment, is realized in a region having large pores.

Usually, the average particle size of the gold metallic pigment is effective from 10 to 50 mu m, and the average particle size of the color conversion pigment is effective from 100 to 150 mu m. When the particle size of the gold metallic pigment and the color conversion pigment is in the above range, it can be appropriately matched with the pores of the screen printing plate to efficiently express the desired gradation effect.

Next, a screen print produced by printing with a metal screen printing plate according to the present invention will be described.

Fig. 2 shows a screen print using the metal screen printing plate of Fig. FIG. 3 is a front view of a screen print of an ink in which a gold metallic pigment and a color conversion pigment are mixed using the metal screen printing plate of FIG. 1; FIG. 4 is a side view of a screen print of an ink mixed with a gold metallic pigment and a color conversion pigment using the metal screen printing plate of FIG. 1;

Referring to FIG. 2, when printing is performed using an ink in which a gold metallic pigment having a small particle size and a color-changing pigment having a large particle size are mixed, a portion having a large pore size is printed mainly on a color conversion pigment, The part is printed on the basis of gold metal pigment.

When the screen print is observed from the front, gold color is observed as a whole as shown in FIG. 3, and when a screen print is observed from the side, a portion having a large pore size is printed in a color- .

The gold metallic pigment may be added in an amount of 5 to 20 wt%, and the color conversion pigment may be added in an amount of 5 to 20 wt%. When the gold metallic pigment and the color conversion pigment are added in an amount less than the above range, there is a problem that a portion which is not printed occurs. When the amount exceeds the above range, the viscosity of the ink increases and the physical properties are difficult to control.

Accordingly, in the screen print according to the present invention, by gradually changing the size of pores from one side to the other or gradually changing the density thereof, not only a gradation effect but also an anti-falsification effect can be improved .

Finally, various methods of manufacturing a screen plate using the metal screen printing plate according to the present invention can be used. Depositing or coating a conductive metal on the metal screen printing plate by sputtering; Forming a photoresist layer on the metal screen printing plate coated with the conductive metal; Exposing and developing the photoresist layer to form a pattern; A step of performing an electroplating process on a portion where the pattern is formed, and a step of peeling off the photoresist to produce a metal screen printing plate.

At this time, irregular pores (meshes) are formed on the fabricated metal screen printing plate, and the size of the pores gradually changes from one side to the other side. Accordingly, the pores may be formed using an ink in which two or more pigments having different particle sizes, hues, sizes, and types are mixed.

The step of preparing the metal screen printing plate is preferably at least one selected from copper, nickel, gold, platinum, silver, aluminum and chromium, and at least one selected from copper, nickel, silver and chromium may be used.

The step of depositing or coating a conductive metal on the metal screen printing plate by sputtering may include depositing a conductive material such as Ti, Au, Ag, Cu, Fe, Ni, Co, P and an alloy on the metal screen printing plate by sputtering, Can be coated.

The step of forming the photoresist layer on the metal screen plate coated with the conductive metal may be performed by a method such as an inkjet, a precipitation method, a spin coating, a screen, a gravure, a roll printing, a dipping method, Or a dry film adhesion method or the like.

In the step of exposing and developing the photoresist layer to form a pattern, a plating portion, which is a portion exposed after development, and a non-plated portion, which is an unexposed portion after development, are formed in the photoresist through exposure and development processes. At this time, it is more preferable that the pores of the pattern are gradually changed in size from one side to the other side.

The step of performing the electroplating process on the portion where the pattern is formed may be performed using various metals such as copper, chromium, nickel, nickel cobalt alloy, and iron nickel cobalt alloy.

In the step of peeling the photoresist, the photoresist is chemically treated and peeled after completion of the electroplating, and a liquid resin such as a transparent acrylic resin is applied to the peeled site to be cured.

The metal screen printing plate produced by the above method may be formed with pores having a diameter of 10 to 150 탆. The pores may be formed of a mixture of two or more pigments having different sizes and colors, Can be used. At this time, the pigment can be mixed with a gold-metallic pigment having an average particle size of 10 to 50 탆 and a color-changing pigment having an average particle size of 100 to 150 탆.

Accordingly, the method of printing a printed product using the metal screen printing plate according to the present invention is characterized in that the size of the pore gradually changes from one side to the other, or the density gradually changes, By gradually changing the amount of ink to be printed, a printed matter having a gradation effect can be obtained.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative of the invention and are not intended to limit the scope of the claims. It will be apparent to those skilled in the art that such variations and modifications are within the scope of the appended claims.

Example 1

Pore: In Fig. 1, the smallest pore (the end portion of the arrow) is 15 mu m and the largest pore (the left end portion of the arrow) is gradually changed to 130 mu m.

Pigment: Gold metallic pigment having an average particle size of 20 탆 and color conversion pigment having an average particle size of 120 탆

Example 2

Pore: In Fig. 1, the smallest pore (the end portion of the arrow) is 15 mu m and the largest pore (the left end portion of the arrow) is gradually changed to 130 mu m.

Pigment: Gold metallic pigment having an average particle size of 100 탆

Comparative Example 1

Pore: 70 ㎛ pores of the same size are formed

Pigment: A gold metallic pigment having an average particle size of 20 탆 and a color conversion pigment having an average particle size of 100 탆

When printing is carried out in this manner, as shown in Fig. 1, a screen metal plate in which the size of pores of the mesh gradually changes is used, and a small particle (gold metallic pigment) having a corresponding particle size and a pigment It can be seen that in Example 1 in which the screen printing is performed using a color conversion pigment, the gradation effect that the ratio of the color-converted pigment gradually increases from the small pore portion to the large pore portion is developed.

In addition, as shown in FIG. 3, when the printed matter is viewed from the front, it is seen as gold color as a whole, and when viewed from the side as shown in FIG. 4, a small pore portion is observed in gold color and a large pore portion is observed in green color can see.

Also, it can be seen that the gradation effect is also exhibited in the case of Embodiment 2 in which the size of the pores is changed and the particle size is constant.

On the other hand, even when the same mixed pigment is used, it can be seen that the gradation effect is not exhibited in Comparative Example 1 in which the pore size is uniform.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Claims (9)

In a metal screen printing plate,
Wherein the pores on the metal screen printing plate are non-uniformly formed. The method according to claim 1,
Wherein the pores gradually change in size from one side to the other side. The method according to claim 1,
Wherein the pores gradually change in density from one side to the other side. The method according to claim 1,
Wherein the diameter of the pores is 10 to 150 mu m. The method according to claim 1,
Wherein the pores form pores having a diameter of 10 to 50 占 퐉 or pores having a diameter of 100 to 150 占 퐉 to form a constant pattern, letter, figure or number. A screen print produced by printing on a metal screen according to any one of claims 1 to 5 using an ink in which two or more pigments having different sizes and colors or sizes and kinds of particles are mixed. The method according to claim 6,
Wherein the pigment is a mixture of a gold metallic pigment and a color conversion pigment having different average particle sizes. 8. The method of claim 7,
Wherein the average particle size of the gold methakic pigment is 10 to 50 占 퐉 and the average particle size of the color conversion pigment is 100 to 150 占 퐉. A method of printing a screen print using the metal screen printing plate of claim 1.

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