KR900002093B1 - Method for forming evapporation film - Google Patents

Abstract

A method for forming a hot stamping foil comprises (a) printing desired pictures onto an (un)transparent substance (i.e. paper, plastics, glass) with colored oil-type offset ink and solvent-type adhesive synthetic resin varnish; (b) presscoating metallic sheet by a heat roller; and (c) protectively coating with the varnish (mixt. of vinyl chloride/vinyl acetate copolymer, cyclohexanone, adhesive, solvent and hardener) to be 0.1-4mm thick.

Description

Method of Forming Metallic Deposition Film

1 is a microsectional view showing an example of a metal deposition film formed according to the present invention.

2 is a cross-sectional view showing another example of a metal deposition film formed according to the present invention.

3 is a cross-sectional view showing an example of a metal deposition film formed on both sides in accordance with the present invention.

4 is a schematic diagram showing an example of a compaction apparatus suitable for use in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

11, 21, 31, 41: Object 12, 22, 32, 42: Oil coating layer

13, 23, 33, 43: solvent varnish layer 14, 24, 34, 44: metallic coating film

15, 25, 35, 45: protective layer

The present invention relates to a method of forming a metallic vapor deposition film having a metallic uneven surface effect, that is to a method of forming a metallic vapor deposition film having a metallic uneven surface effect on the surface of various plastics, papers or metal materials. .

In general, the hot stamping foil has been used in various colors such as various plastics, metal products or papers, and in particular, in recent years, such as packaging plastic containers or packaging paper boxes widely used as packaging materials for various products. It has been used more and more to derive advertising effect and aesthetic sense in various colors.

As a method of forming such a metallic vapor deposition film, various types of letters and figures are conventionally designed for various types of synthetic resins, such as PVC, ABS, PS, PC, PET, paper, and the like, so as to exhibit a metallic effect. Since the uneven mold having was required, the production of this mold was made by carving the metal plate with the engraving machine in the same way as the desired letter or figure shape to form the irregular shape, or by corroding it into the required letter or figure shape. After the mold is manufactured, the mold is attached to a fixed hot plate of a hot stamping machine, and the object to be engraved with necessary letters or figures is placed on a table of the thermopress machine, and the mold and When the heat-bonding adhesive coated surface of the metal deposition film is matched between the objects, heat is applied by applying pressure to the mold while transferring the heat of 80 ° C. to 180 ° C. to the mold, and the metallic layer film is transferred to the object in the shape of a desired letter or figure. Has been using the method.

However, in the case of using such a transfer method of the conventional metallic vapor deposition film, since the method of pressing the uneven mold, the letters or figures formed by the mold must be very delicate and precise, but it is practically impossible to manufacture the delicate and precise mold. Therefore, the desired letter or figure transfer effect could not be obtained.

Also, if you want to transfer metallic patterns or letters of various colors, you have to squeeze them into several uneven molds according to the color type. Therefore, the parts under pressure of each object are deformed or finished by pressure depending on the number of times of uneven mold pressing. The shape is not good because it is not good, and the position of the shape is not precisely matched to each color in the shape of the letter or figure that is printed on the object under pressure. I could not get it.

First of all, it is very costly and time consuming to manufacture a mold, difficult to mass-produce, and the metal film is squeezed only with a thin adhesive for thermal fusion applied on one surface of the metal deposition film, and thus the wear resistance and impact resistance after the metal film is transferred to the object. It was weak and the metal film had a problem of peeling off well even by a small stimulus.

In addition, in the case of using the conventional method, when the desired character or pattern is formed to protrude in a three-dimensional manner on the upper surface of the object, the upper surface of the object after embossing with the uneven mold of the character or pattern. Since the protrusion formed on the plate must be thermally compressed with a flat mold to exhibit the three-dimensional unevenness effect, the protrusion angle and sharpness of the protrusion on the upper surface of the object become poor due to the difference in deformation depending on the type and thickness of the material. It could not be obtained, and this projected transfer was impossible when the object was a hard acrylic plate, PVC or metal.

In addition, since it is impossible to transfer by pressing on transparent plates such as acrylic, PVC, PC, ABS, PET, and glass, it is impossible to form a desired character or pattern with a metallic vapor deposition film on both the front and back surfaces.

Therefore, in order to solve the problems caused by the conventional metal deposition film transfer method, the present invention requires the use of flat plate printing, intaglio printing, and screen printing methods for adhesive synthetic resin varnishes and ordinary oil type ink or letters. By printing in shape and pressing the metal deposition film, no metal mold is needed, mass production is possible, fine and fine patterns can be easily transferred, and the method of forming a metal deposition film that is economical and has a very excellent metallic effect is made. Its purpose is to provide a method of manufacturing.

Hereinafter, the present invention will be described in detail.

The present invention prints an oil-type offset printing ink having an appropriate color and a solvent-type synthetic resin varnish having adhesiveness in a desired shape on a transparent or opaque object to form a metallic vapor deposition film, and prints an oil-type coating layer and a solvent-type varnish layer, respectively. To form a metallic coating layer by pressing a metallic vacuum deposition film on the object having the basic coating layer formed thereon, and then applying a transparent solvent-type synthetic resin varnish having adhesiveness over the whole object. It is a method of forming a metallic vapor deposition film characterized by forming a protective layer.

Referring to the present invention in more detail as follows. The present invention prints an oil-type printing ink having an appropriate color and a solvent-type synthetic resin varnish having adhesiveness on an object such as paper, plastic, glass, or metal product to form a metallic vapor deposition film. On top of this, apply a metal film to be deposited on the metal film. At this time, the metal film is applied to the plastic film by vacuum heating and then pressurized with a heat roller using a metal vacuum deposition film. It is applied only to the solvent-type synthetic resin varnish printed on the to form a metallic coating layer. When the metallic coating layer is formed, the solvent-type synthetic resin varnish is applied again to the entire object to protect the metallic coating layer, wherein the solvent-type synthetic resin varnish used imparts light resistance, abrasion resistance, weather resistance, and chemical resistance of the metallic coating layer. It is used to form a protective layer by applying a varnish transparent or very strong adhesive force by intaglio printing or screen printing method, or by applying a transparent varnish of UV-curing pattern formation.

According to the present invention, the solvent type synthetic resin varnish to be used is a synthetic resin varnish composed of a copolymer of vinyl chloride-vinyl acetate and mixed with cyclohexanone, a solvent, an adhesive, a curing agent, and other additives. It is preferable to use a solvent-based coating liquid by mixing a weight ratio of about 4: 1 to the synthetic resin varnish.

In addition, the thickness of the varnish layer is most suitably 0.1 mm to 4 mm. If the thickness is too thick, the adhesion of the metallic coating layer becomes unstable, and even if too thin, the adhesion of the metallic coating layer is weak.

On the other hand, in the present invention in forming the metallic coating layer on the object in order to obtain a metallic coating layer to have a complete adhesiveness while mass production, it is preferable to use the crimping apparatus of FIG. 5 specifically designed in the present invention.

That is, the crimping apparatus used in the present invention has a heat roller and a preheating device, and passes through the heat roller through the preheating device through the preheating device on which the basic coating layer is formed until just before forming the metallic coating layer on the object. On the other hand, the metal powder is configured to pass through the metallic vacuum deposition film, which is vacuum-deposited, to be pressed against the object having the base coating layer formed therebetween.

In this case, the thermal roller is preferably made of a rubber material and has a slight surface elasticity. Thus, even if the coating thickness of the solvent-type synthetic resin varnish is layered, it is possible to obtain a three-dimensional effect while obtaining a uniform coating effect of the metallic coating layer. have.

In addition, the metallic thin film of the metallic vacuum deposition film passing through such a thermal roller is pressed only on the solvent-type synthetic resin varnish layer of the object on which the base coating layer is formed, and the other portion of the metallic powder is not bonded, and is wound to be recycled again. The object to which the metallic coating layer is applied is sent to the next process.

According to the present invention, the solvent-synthetic resin varnish used is preferably used in the case of the final coating layer having a higher viscosity than that used in the base coating layer, and such a protective layer should be transparent or translucent. Solvent-type synthetic resin varnish used as the base coating layer in all can be selectively used that is transparent or opaque, the color can also be used arbitrarily selected.

The metallic deposition film according to the present invention prepared in this way is to have a variety of colors, excellent stereoscopic effect and excellent light resistance, wear resistance, weather resistance, chemical resistance by a relatively simple and easy process.

In addition, when forming the metallic deposition film according to the present invention, there is no difficulty in manufacturing a stamping mold, which has been expensive in the past, and the transfer form of the metallic deposition film formed can be represented precisely even with very fine patterns or lines. It is.

When forming the metallic deposition film by the method according to the present invention, the three-dimensional impression of the metallic deposition portion is very excellent, according to the present invention in order to make the metallic three-dimensional impression more excellent, the solvent-type synthetic resin varnish according to the degree required when forming the base coating layer It can be applied two or more times to add a three-dimensional feeling, and in some cases, when applying a solvent-type synthetic resin can be continuously applied in a multi-stage to form a stepped shape of the cross section.

More preferably, in the multi-stage coating, it is possible to continuously apply the solvent-type synthetic resin varnish and the metallic coating layer alternately or to adjust the transparent color of the solvent-type synthetic resin varnish to form a metallic deposition film having a metallic stereoscopic effect in various shapes. will be.

On the other hand, in the present invention, when the object to be made metallic is a transparent object such as, for example, glass, it is suitable for forming the metallic vapor deposition film by the same or different processes so as to have a metallic effect on both surfaces of the object.

The present invention will be described in detail with reference to Examples.

Example 1

Method of Forming Metallic Deposited Film of Simple Structure

When a part of the transparent or opaque object is to obtain a general color and the other part is to form a metallic deposition film having a simple structure to obtain a metallic color effect, the plate is printed on the object 11 using a conventional oil printing ink. By printing a desired pattern or text in a suitable position to form an oil coating layer 12, and then using an adhesive solvent-type synthetic resin varnish as described above according to the material of the object 11 By the screen printing method, the solvent type coating layer 13 is apply | coated with a suitable letter or pattern. In this case, the oil type coating layer 12 and the varnish layer 13 having opposite chemical properties are formed on the surface of the object 11 to form a basic coating layer.

On the other hand, the metal powder is vacuum-deposited to make a metal vacuum deposition film, which is prepared in the winding roller (a) of the pressing apparatus (see FIG. 4) as described above. Next, the object having already formed the basic coating layer passes through the heat roller (B) while passing through the preheater (D). At this time, the metal vacuum deposition film is also pressed through the heat roller (B). D) the solvent-borne synthetic resin varnish layer on the object 11 slightly melted, i.e., the metal powder on the metal vacuum deposition film is deposited only on the varnish layer 13 to form the metallic coating layer 14, and the remaining oil coating layer The metal powder is not deposited on (12) or the surface of the object to which nothing is applied. The object in the state in which the metallic coating layer 14 is formed is finally coated with the solvent-based synthetic resin varnish in the next step to form the protective layer 15.

On the other hand, the metallic vacuum deposition film after forming the metallic coating layer 14 is wound on the winding roller (c) to be reused.

Example 2

Method of Forming Metallic Deposited Film of Multi-Stage Structure

In the same manner as in Example 1, the oil-type coating layer 22 is formed on the object 21, and then the first varnish layer 23, the second varnish layer 23a, and the third varnish layer 23b are sequentially formed. After forming, the metallic coating layer 24 is formed, and finally, the protective layer 25 is formed.

Example 3

Method of forming metallic deposition film on both sides

Implemented in the same manner as in Example 1 and Example 2, except that the transparent object 31 has an oil coating layer 32, a first varnish layer 33, a second varnish layer 33a, and a metallic coating layer 34. And a protective layer 35, respectively, and on the other side, the oil type coating layer 32, the first varnish layer 33 ', the second varnish layer 33a', the metallic coating layer 34 'and the protective layer 35 Form ').

Example 4

Double Metal Deposition Film Formation Method

In the same manner as in Examples 1 and 2, the object 41 has an oil coating layer 42, a first varnish layer 43, a first metallic coating layer 44, a second varnish layer 43a, The second metallic coating layer 44a and the protective layer 45 are sequentially formed.

Claims (8)

On the transparent or opaque object to form a metallic deposition film, an oil-type offset printing ink having an appropriate color and a solvent-type synthetic resin varnish having adhesiveness are printed in a desired shape to form a day-type coating layer and a solvent-type varnish layer, respectively. It has a base coating layer, and a metallic vacuum deposition film is pressed on the object on which the base coating layer is formed to form a metallic coating layer, and then, by applying a transparent solvent-type synthetic resin varnish having adhesiveness over the entire object. A method of forming a metallic vapor deposition film, characterized by forming a layer. The method of claim 1 wherein the varnish layer is transparent and is colored or colorless solvent-based synthetic resin. The method of claim 1 wherein the varnish layer is formed such that its thickness is from 0.1 mm to 4 mm. The method according to claim 1, wherein the solvent-type synthetic resin varnish is a mixture of hexanone, a solvent, an adhesive, and a curing agent in a cyclone-vinyl acetate copolymer as a main component. The method of claim 1, wherein the metallic coating layer is formed by using a crimping device having a heat roller and a preheating device whose surface is made of rubber, and the object and the metallic vacuum having the basic coating layer formed through the preheating device in the heat roller. Causing the deposited film to be compressed to form a metallic coating layer. The method of claim 1, wherein the varnish layer is formed one or more times. The method according to claim 6, wherein when the solvent type varnish layer is formed two or more times, the solvent type varnish layer is continuously formed, or a metallic coating layer is optionally formed between the respective solvent type varnish layers. 7. The method according to claim 6, wherein the thickness of the solvent varnish layer is 0.1 mm to 4 mm when continuously forming the solvent varnish layer.

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