KR20070032195A - offset printing plate and method for manufacturing the same - Google Patents

Abstract

The present invention relates to an offset-printed plate-like object and a method for manufacturing the same, and provides a plate-like object in which various patterns are formed on the back or the front surface more clearly, uniformly and economically by using an offset-printed sublimation transfer paper.

The plate body of the present invention is a plate body; An ink receiving layer formed on the plate-like body; A transfer layer formed on the ink receiving layer and formed by offset printing; And a protective layer formed on the transfer layer.

Description

Offset printing plate and method for manufacturing thereof {offset printing plate and method for manufacturing the same}

1 is a cross-sectional view showing a layer structure of an offset printing plate member according to an embodiment of the present invention.

* Brief description of symbols used in drawings

1: platelet 2: ink receiving layer

3: sublimation transfer layer 4: protective layer

The present invention relates to an offset printing plate and a method of manufacturing the same, and more particularly to a plate-like body formed on the back or the front surface of the various patterns more clearly, uniformly and economically using offset printed sublimation transfer paper It is about.

In general, plate-like body such as decorative plate glass or iron plate or aluminum plate is used as interior and exterior materials for building or exterior materials for home appliances manufactured to print a variety of patterns on the back or front surface to feel a good sense of beauty. In particular, large home appliances such as refrigerators, air conditioners, and kimchi refrigerators have a great influence on the interior interior, and thus, there is an increasing need to improve the aesthetics of the plate-shaped bodies mounted on the front parts.

 Various methods are known at present as a printing method of the pattern which enters a plate-shaped object. For example, a pattern has been formed on one side of the plate through various printing methods such as a method of attaching a printed film on one side of the plate, silk screen printing, gravure printing, and actual output.

However, in the case of the film attachment method, since the ink used in the film must use an expensive ceramic-based paint or ink that can withstand high temperatures, economical efficiency is lowered, and simple color and turbidity are pointed out as problems.

In the case of the silk screen printing method, there is a problem that the print quality is deteriorated due to poor color reproducibility during mass production, and the printing speed is slow, so it is only suitable for the production of small quantities of various kinds. In the case of gravure printing, the print quality is excellent, but the cost for printing is excessively consumed, so it is only suitable for mass production of small items. In addition, in the case of the actual output, the printing quality is the best, but there is a problem that the printing cost is excessively consumed and the printing speed is also slow, and thus it is mainly used for samples.

The technical problem to be achieved by the present invention is to provide an offset printing plate that can be used for a general purpose, excellent economical quality and maintain excellent print quality.

Another technical problem to be achieved by the present invention is to provide a method of manufacturing an offset printing plate-shaped object.

In order to achieve the above technical problem, the offset printing plate member of the present invention includes a plate-like substrate; An ink receiving layer formed on the rear surface or the front surface of the plate-shaped substrate; A transfer layer formed on the ink receiving layer and formed by offset printing; And a protective layer formed on the transfer layer.

In order to achieve the above-mentioned other technical problem, the manufacturing method of the offset printing plate-shaped object of this invention comprises the steps of apply | coating resin on the back or front surface of a plate-shaped board | substrate, and drying it to form an ink receiving layer; Forming a transfer layer by press-transferring transfer paper obtained through offset printing onto the ink receiving layer; And applying a resin on the surface of the transfer layer and then drying to form a protective layer.

Hereinafter, the present invention will be described in more detail.

The offset printing plate member according to the present invention first forms an ink receiving layer for accommodating the above-described transfer layer to form the transfer layer, and then further forms a protective layer on the transfer layer as a finish. 1, the plate-like substrate 1, the ink receiving layer 2 formed thereon, the transfer layer 3 formed on the ink receiving layer 2, and the protective layer 4 formed on the transfer layer 3, as shown in FIG. ) Will be provided.

In the embodiment according to the present invention, as the plate-like substrate 1 on which the transfer layer 3 and the ink receiving layer 2 are formed, a glass plate, an iron plate or an aluminum plate can be used.

As the glass plate, transparent glass or translucent glass, etc., in which the printing pattern on the back surface can be seen, can be used, and as the type thereof, a white glass plate, a blue glass plate, or the like can be used without limitation. In view of the physical properties of the glass itself, white glass is good, but most of it depends on imports, so the price is high, so it is difficult to use it for special purpose.In the case of the blue glass plate, its physical properties are somewhat lower than that of the white glass plate. It is used. In the present invention, such a blue glass plate or a white glass plate may be used, and the thickness thereof is not particularly limited, but generally 2 to 18 mm may be used.

It is preferable that an iron plate or an aluminum plate is 0.1 mm-5 mm in thickness.

The transfer layer 3 according to the present invention uses a transfer paper obtained by adopting the offset printing method, unlike the conventional silk screen printing method or the real-time printing method. . Such an offset printing method has a high printing speed and has a very good print quality, so that it can be used universally except for a small amount of various types of products. Such a transfer layer 3 may be formed on the back or front surface of the plate-like substrate through pressurized thermal transfer, and the transfer layer-forming ink cannot be directly absorbed on the surface of the smooth plate-like substrate having hydrophobicity so that the plate-like substrate is The ink receiving layer 2 is formed in advance on the surface of (1), which will be described later.

In the embodiment according to the present invention, since the transfer layer 3 is formed by pressurized thermal transfer, it is preferable to adopt a sublimation transfer method, and it is used after printing a pattern on various printing media including paper in advance. Bar, the offset printing method and the receiving medium used therein may be any method and any medium known in the art, there is no particular limitation.

As described above, in order to form the transfer layer 3 on the surface of the smooth plate-like substrate 1 that is a hydrophobic surface, an ink receiving layer 2 capable of containing sublimation ink must be provided in advance on the surface of the plate-like substrate. For this purpose, it is preferable to apply the resin by spraying or the like, and it is also preferable to form the primer layer in advance so that the adhesion of the resin is better.

In the case where the plate-shaped substrate 1 is a glass plate, an ink receiving layer 2 and a transfer layer 3 are formed on the rear surface thereof. In the case of the plate-shaped substrate 1 iron plate or an aluminum plate, the ink receiving layer 2 and the transfer layer are formed on the entire surface thereof. It is preferred that layer 3 be formed.

In the case where the plate-shaped substrate is a glass plate, it is preferable to use a resin of transparent color as much as possible so that the pattern of the transfer layer 3 can be easily transmitted through the front surface of the glass as the resin for forming the ink receiving layer 2. As such a transparent resin, an acrylic resin, an epoxy resin, a urethane resin, a polyester resin, or the like may be used, but is not limited thereto. In particular, it will be apparent to those skilled in the art that by adding an additive to them by a suitable method known in the art, it is possible to solve the performance difference they have, so that any transparent binder can be used without particular limitation.

In addition, when the plate-shaped substrate is an iron plate or an aluminum plate, it is preferable to add a white pigment to the above-mentioned transparent resin in order to hide the color of the iron plate or the aluminum plate.

The thickness of the ink receiving layer 2 is preferably formed to have a thickness of about 10 to 50 µm, preferably 20 to 40 µm, and more preferably 30 to 40 µm. If it is out of this range, it is difficult to properly receive the sublimed ink, which is not preferable.

After the ink receiving layer 2 and the transfer layer 3 are formed on the plate-like substrate 1, the protective layer 4 is formed so that such a transfer layer does not come out or is easily damaged by the surrounding environment.

In the case where the plate-shaped substrate 1 is a glass plate, since the ink receiving layer 2, the transfer layer 3 and the protective layer 4 are formed on the rear surface thereof, the protective layer 4 has a printed pattern that is more visible through the entire surface of the glass plate. It is preferable to make it colored so that it can be clearly expressed. Preferably, it is preferable to make it white so that the printed pattern can be better expressed, but is not limited thereto. In order to form such a protective layer 4, it is also possible to form by applying a paint, such as colored paint directly, by adding a colored pigment such as TiO ₂ , talc, iron oxide to acrylic, epoxy, urethane-based transparent resin It is also possible to form a coating film. Such a thickness of the protective layer 4 is preferably formed to a sufficient thickness so that sufficient protection of the transfer layer 3, it is preferably formed to have a thickness of 10 to 200㎛, preferably 30 to 100㎛ good.

In the case where the plate-shaped substrate 1 is an iron plate or an aluminum plate, the ink receiving layer 2, the transfer layer 3, and the protective layer 4 are formed on the entire surface thereof, so that the protective layer 4 has a printed pattern on the entire surface. It should be transparent so that it can be expressed more clearly. In order to form such a protective layer 4, acrylic, epoxy, and urethane transparent resins are applied to form a coating film.

The offset printing plate-shaped object which concerns on this invention which has such a component can be manufactured by the following method.

In the case where the plate-shaped substrate 1 is a glass plate, the transparent resin is coated on the rear surface thereof, and then dried to form the ink receiving layer 2, and then press the transfer sheet obtained through separate offset printing onto the ink receiving layer 2 Thermal transfer is performed to form the transfer layer 3, and a resin containing a colored paint is applied onto the surface of the transfer layer 3, followed by drying to form a protective layer 4 to produce an offset printing plate-like object. .

In the case where the plate-shaped substrate 1 is an iron plate or an aluminum plate, a white paper containing a white pigment is coated on the entire surface of the plate-like substrate 1 and then dried to form an ink receiving layer 2, and then a transfer paper obtained through separate offset printing. Is press-heat-transferred on the ink receiving layer 2 to form a transfer layer 3, a transparent resin is applied on the surface of the transfer layer 3, and then dried to form a protective layer 4 to offset printed plate. The upper body will be manufactured.

More specifically, first, various foreign substances and the like existing on the surface of the plate-like substrate 1 are sufficiently washed and removed, and then the ink receiving layer 2 is formed on the back or front side thereof. 2) applies various resins as described above by screen printing, spray printing, roller printing and the like. As described above, the thickness at this time is preferably formed to have a thickness of about 10 to 50 µm, preferably 20 to 40 µm, and more preferably 30 to 40 µm. Since the ink receiving layer 2 should accommodate the ink of the transfer layer 3 evenly, it is preferable that the ink receiving layer 2 be uniformly coated with as little variation in thickness as possible. The coated resin may be subjected to a drying process, and may be performed at a temperature range of 150 to 200 ° C. for about 1 minute to 120 minutes, preferably 5 minutes to 20 minutes, so as not to cause degeneration of the plate-shaped substrate 1. This high temperature drying process has the advantage of shortening the drying time. Even in the case of using a natural drying method in addition to such high temperature drying, a long time of 1 hour to 10 hours is required depending on the ambient temperature, and is not particularly limited.

After the ink receiving layer 2 is formed on the plate-like substrate 1 in this manner, the transfer layer 3 is formed on the ink receiving layer 2. The transfer layer 3 adopts a sublimation transfer method, and after printing a desired pattern on the sublimation transfer paper by an offset method through a separate offset printing process, it is used. The sublimation transfer paper usable here can use a variety of media such as paper, it is also possible to give a variety of colors from 2 ° to 6 °. The pattern printed on the transfer paper is formed on the plate-like substrate 1 by thermal transfer. To this end, the transfer paper is adhered to the ink receiving layer 2 and then pressurized with a high-temperature heat press to heat the ink printed on the transfer paper. Is sublimated and thermally transferred in a state of infiltrating on the ink receiving layer 2. The hot press temperature at this time is preferably pressurized for about 0.1 to 20 minutes at a temperature of 170 to 250 ° C. so as not to change the physical properties of the plate-like substrate 1. Under such conditions, when pressurized thermal transfer is performed, the ink of the pattern printed on the transfer paper sublimates and penetrates into the transparent ink receiving layer 2 to form the transfer layer 3, so that the ink receiving layer 2 and the transfer layer 3 are separated. Precise formation of the transfer layer 3 can be performed without generation of voids or bubbles.

The above-described thermal transfer temperature and time may vary depending on the thickness and type of the glass substrate 1, and a suitable range of temperature and time other than the above-described range may be determined by those skilled in the art according to the type and thickness of the plate-shaped substrate 1. It can be set without difficulty.

After the transfer layer 3 is formed, the protective layer 4 is formed. As described above, the transfer layer 3 is buried or damaged by the surrounding environment as described above. In addition to the role of suppressing, and in addition to providing a colored background including a white to the transfer layer (3) serves to help the various patterns can be better visually represented. The protective layer 4 is performed after the thermal transfer process of the transfer layer 3, and the layer is formed by screen printing, spraying, or roller coating a transparent resin or colored resin according to the type of the plate-shaped substrate 1. To form. The formed layer is subjected to a process of drying for about 10 to 20 minutes at a temperature of 170 to 250 ℃ so as not to change the physical properties of the glass substrate (1). Natural drying is of course also possible, in which case it is desirable to give sufficient drying time of 1 to 10 hours.

Such a thickness of the protective layer 4 is preferably formed to a sufficient thickness so that sufficient protection of the transfer layer 3, it is preferably formed to have a thickness of 10 to 200㎛, preferably 30 to 100㎛ good.

Since the offset printing plate member obtained through such a process uses an offset-printed transfer paper, various patterns are homogeneously and clearly formed on the rear surface thereof, and the economical efficiency is also excellent and thus it can be used universally. In particular, as well as interior and exterior materials of the building, it is useful to the front of the home appliances such as air conditioners, refrigerators, kimchi refrigerators, etc. to exhibit an excellent decorative effect.

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto.

<Example 1>

3.2 X 350 X 450 mm sized blue glass plate (manufactured by Kumkang Glass Co., Ltd.) was cleaned to remove various foreign substances on the surface, and then acrylic printed binder (manufactured by Samwha Paint Co., Ltd., Grade: SC glass coat (#TPI)) was screen printed. After forming a 25㎛ thickness on the back of the glass using, using an IR sweep machine 25M (manufactured by Eugene Machinery Co., Ltd.) for 10 minutes at 180 ℃ to form an ink receiving layer (2).

Separately, the sublimation transfer paper offset-printed using a Heidelberg 5 ° printing machine on a paper is pressurized for about 40 seconds at a temperature of 210 ° C. using a pressurized heat press (manufactured by the same press) to transfer the transfer layer 3 to the ink receiving layer 2 Formed on phase.

Subsequently, an acrylic resin (Ti: SC glass coat (#TPI), manufactured by Samwha Paint, Inc.) containing 20 wt% of TiO ₂ as a pigment was used on the transfer layer 3 by screen printing. After coating to a thickness of 30 μm, the protective layer 4 was formed by drying at 180 ° C. for 25 minutes at IR Scoring Machine 25M (manufactured by Eugene Machinery Co., Ltd.) to prepare a target offset printed plate.

<Example 2>

3.2 x 350 x 450 mm sized blue glass plate (manufactured by Geumgang Glass Co., Ltd.) was washed to remove various foreign substances on the surface, and then epoxy-based transparent binder (KSR177: K5022MX75: YD011EC75 = 1: 0.5: 1 (weight ratio) )) Was applied on the back surface of the glass using a screen printing method to a thickness of 25㎛, and then dried for 4 hours to form an ink receiving layer (2).

Separately, the sublimation transfer paper offset-printed using a Heidelberg 5 ° printing machine on a paper is pressurized for about 40 seconds at a temperature of 210 ° C. using a pressurized heat press (manufactured by the same press) to transfer the transfer layer 3 to the ink receiving layer 2 Formed on phase.

Subsequently, an epoxy resin (TiO2, KSR177: K502177: G5022MX75: YD011EC75 = 1: 0.5: 1 (weight ratio)) containing 20 wt% of TiO ₂ as a pigment was used as a screen printing method. After coating on (3) with a thickness of 30 μm, the protective layer 4 was formed by naturally drying for 4 hours to prepare a target offset printing plate-like object.

<Example 3>

3.2 x 350 x 450 mm iron plate (manufactured by Iron Co., Ltd.) or aluminum plate (manufactured by Co., Ltd.) to remove various foreign substances on the surface, and then screen-printed acrylic white binder (manufactured by Deepia Co., Ltd., Norurac White) After using to form a thickness of 25㎛ on the front of the iron plate or aluminum plate, it was dried for 10 minutes at 180 ℃ using IR baking machine 25M (manufactured by Eugene Machinery Co., Ltd.) to form the ink receiving layer (2).

Separately, the sublimation transfer paper offset-printed using a Heidelberg 5 ° printing machine on a paper is pressurized for about 40 seconds at a temperature of 210 ° C. using a pressurized heat press (manufactured by the same press) to transfer the transfer layer 3 to the ink receiving layer 2 Formed on phase.

Subsequently, an acrylic transparent binder (manufactured by Deepia Co., Ltd., NORUAK Transparent) was applied to the transfer layer 3 using a screen printing method at a thickness of 30 μm, and then IR swelling machine 25M (manufactured by Eugene Machinery Co., Ltd.) at 180 ° C. It dried for 10 minutes, the protective layer 4 was formed, and the target offset printing plate-shaped object was produced.

<Example 4>

3.2 x 350 x 450 mm iron plate (manufactured by Iron Co., Ltd.) or aluminum plate (manufactured by Co., Ltd. Co., Ltd.) was removed to remove various foreign substances on the surface, and then epoxy-based white binder (manufactured by Kukdo Chemical, KSR177: G5022MX75: YD011EC75 =). 1: 0.5: 1 (weight ratio)) was applied on the front surface of the iron plate or the aluminum plate by using a screen printing method, and then dried for 4 hours to form the ink receiving layer 2.

Separately, the sublimation transfer paper offset-printed using a Heidelberg 5 ° printing machine on a paper is pressurized for about 40 seconds at a temperature of 210 ° C. using a pressurized heat press (manufactured by the same press) to transfer the transfer layer 3 to the ink receiving layer 2 Formed on phase.

Subsequently, a transparent epoxy resin (manufactured by Kukdo Chemical Co., Ltd., KSR177: G5022MX75: YD011EC75 = 1: 0.5: 1 (weight ratio)) was applied on the transfer layer 3 to a thickness of 30 μm using a screen printing method, and then 4 After drying for a time to form a protective layer (4) to produce the desired offset printing plate-shaped body.

The offset printing platelets manufactured as described above are superior to the plate glass obtained by the conventional method such as silk screen printing, so that the sharpness reaches 90%, and the uniformity of the printing pattern is improved over the entire surface of the plate substrate. In the case of the sublimation transfer paper obtained through the offset printing method, it takes less time to print a large amount, and thus productivity may be improved. Therefore, the offset printing plate-like body according to the present invention can be usefully used in the front and rear parts of interior and exterior building materials or various home appliances.

Claims (11)

Plate-like substrates; An ink receiving layer formed on the rear surface or the front surface of the plate-shaped substrate; A transfer layer formed on the ink receiving layer and formed by offset printing; And And a protective layer formed on the transfer layer. The offset printing plate-shaped member according to claim 1, wherein the plate-shaped substrate is any one of a glass plate, an iron plate, and an aluminum plate. The offset printing plate-like member according to claim 1, wherein the glass plate has a thickness of 2 mm to 18 mm. The offset printing plate-shaped member according to claim 1, wherein the iron plate or the aluminum plate has a thickness of 0.1 mm to 5 mm. The offset printing plate member according to claim 1, wherein the ink receiving layer and the protective layer are one resin selected from the group consisting of an acrylic resin, an epoxy resin, a urethane resin, and a polyester resin. The offset printing plate member according to claim 1, wherein the protective layer is formed by adding a colored pigment such as TiO ₂ , talc or iron oxide to an acrylic resin, an epoxy resin or a urethane resin. The offset printing plate member according to claim 1, wherein the transfer layer is formed by a sublimation transfer method. Applying an resin on the back or front side of the plate-shaped substrate and then drying it to form an ink receiving layer; Forming a transfer layer by press-transferring transfer paper obtained through offset printing onto the ink receiving layer; And And applying a resin on the surface of the transfer layer and then drying to form a protective layer. The method of claim 8, wherein the resin is one resin selected from the group consisting of acrylic resins, epoxy resins, urethane resins, and polyester resins. The method of claim 8, wherein the resin for forming the protective layer is formed by adding a colored pigment such as TiO ₂ , talc or iron oxide to an acrylic resin, an epoxy resin or a urethane resin. 10. The method of claim 8, wherein the transfer paper is a sublimation transfer paper.

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