KR100264811B1 - The vaporized coating sheet and the same method - Google Patents

Abstract

PURPOSE: A vapor deposited steel plate is provided, which has excellent surface appearance, abrasion resistance, heat resistance, corrosion resistance, adhesiveness, weather resistance and workability and also can be used as a decoration steel plate by forming solid pattern. CONSTITUTION: The system comprises the followings: (i) a matrix steel plate layer (20); (ii) a primer coating layer (30) that is endowed with elongation ratio, corrosion resistance and adhesiveness by coating selectively epoxy paint or polyester paint on the matrix; (iii) a vapor deposited film layer (10) for forming printing characteristics and vapor deposition adhesiveness on the matrix steel plate (20) or the primer coated layer (30); (iv) an embossing layer (50) that is emboss treated to form embossed pattern; and (v) a coated layer (40) of back face which is formed under the matrix layer (20).

Description

Evaporated steel sheet and its manufacturing method

The present invention has a beautiful appearance on the pretreated base steel plate itself or the steel plate coated with prima paint such as aluminum steel sheet, tin, chromium and nickel plated steel sheet, electro galvanized plated steel sheet and cold rolled steel sheet (hereinafter referred to as base steel sheet). The present invention relates to a deposited steel sheet and a method for manufacturing the same, which are manufactured by attaching a deposited film to which exterior and functionalities are attached, and then pressing the elastic film roll.

For example, a deposition film formed on a surface of a deposition steel sheet used for a reflecting plate of a fluorescent lamp is generally deposited on a plastic film using only some metal components such as silver and aluminum, so that the color and appearance may be simple. In addition, in terms of physical properties, only reflectance, adhesiveness and weather resistance are excellent.

In other words, the conventional deposition film structure, as shown in Figure 2, the acrylic clear coating layer 11, the deposition layer 14, PET film layer 12, the adhesive layer 15, the release film sequentially from the top It is composed of a layer 16, which is the majority of applications are limited to fluorescent reflector, there is a disadvantage that it is difficult to apply to applications other than fluorescent reflector. That is, physical properties such as workability, abrasion resistance, high weather resistance, corrosion resistance, and high adhesion required when applied to other products have been disadvantageous, and are difficult to apply to various products.

The object of the present invention was devised in view of the above-mentioned disadvantages, and after the deposition film according to the present invention prepared for use on the surface of the steel sheet treated with pretreatment (phosphate or chromate treatment) or prima, elastic After rolling down with a roll, the surface of the steel sheet is rolled down with an embossing roll according to the demand of the consumer, giving a very three-dimensional and changeable state than the conventional smooth state to improve appearance and improve functionality. The present invention provides a steel sheet and a method of manufacturing the same.

In addition, the present invention will be described in more detail with respect to the other objects, advantages and features of the present invention to be able to diversify the application and shorten the process when manufacturing the deposited steel sheet.

1 is a view showing a deposited steel sheet according to the present invention.

2 is a view showing a layer of a conventional general deposition film.

3 is a view showing a layer of the deposited film of the present invention.

* Explanation of symbols for main parts of the drawings

1: clear coating layer 2: PET. Film layer

3: printed layer 4: deposited layer

5: adhesive layer 6: release film layer

7: hairline layer 10: deposited film layer

20: holding steel sheet 30: prima coating layer

40: back coating layer 50: embossed layer

1 is a view showing a cross-sectional configuration of a deposited steel sheet according to the present invention.

As shown in the figure, the deposited steel sheet according to the present invention adheres and forms the deposited film layer 10 prepared according to the intended use on the surface of the base steel sheet layer 20 subjected to pretreatment (phosphate or chromate treatment) or prima treatment. Thereafter, the sheet is pressed down with an elastic rubber roll, and then, the steel sheet is pressed down with an emboss roll according to the demand of the consumer so that the embossed layer 50 is formed.

At this time, the deposited film layer 10, that is, the deposited film according to the present invention to give a beautiful pattern, color and excellent functionality, as a product that improves the disadvantages of the conventional deposited film, as described below to be applicable to various products In addition, the process can be shortened during the manufacture of the deposited steel sheet.

In addition, the PCM paint of the primer coating layer 30 or the back coating layer 40 formed by coating on the upper surface or the back surface of the base steel sheet layer 20 generates a coating film crack (crack) phenomenon at the processing site. Epoxy- or polyester-based PCM paints having good elongation of the coating film and excellent corrosion resistance are used.

A general formula of the coating applied to the deposited film and the steel sheet according to the present invention is as follows.

* Composition of Deposition Film *

The deposited film according to the present invention used on the surface of the non-absorbent material metal plate is largely composed of four to seven layers according to the use, for example, as shown in Figure 3, the clear coating layer from the top ( 1), PET film layer 2, hair line layer (7), printing layer (3), deposition layer (4), adhesive layer (5), release film layer (6).

Looking at the above constituent layer in more detail based on Figure 3, first, a clear coating layer (1) subjected to UV clear treatment for excellent wear resistance and workability, PET treated with a water-dispersible polyurethane to excellent printing properties and deposition adhesion Film layer (2), hairline layer (7) with abrasive marks on PET film to give metallic texture visually, pigments, acrylic and vinyl resins, NC, organic solvents, etc. to show various colors and patterns. Printed printing layer 3, silver, aluminum, gold, copper, zinc, chromium, nickel, tin, stainless steel, titanium at least one metal selected from the group by vacuum deposition to give a metallic unique color or Evaporation layer 4 with improved reflectivity, adhesive coating method for coating an acrylic or polyurethane adhesive, or copolymerized PET, PP, or PE films depending on the intended use. It is formed by adhesive bonding by heat fusion method to improve adhesion and weatherability of the base steel sheet and the deposited film (5), in particular PE, or E.V.A. It consists of a release film layer 6 of the film. Here, the clear coating layer 1, the printing layer 3, the adhesive layer 5, the release film layer 6, and the hairline layer 7 may be partially or completely removed or formed depending on the intended use.

In forming the adhesive layer 5, in the case of adhesive coating, the thickness of the adhesive coating is 1 to 5 µm, and the thickness of the thermal fusion bonding film is 15 to 30 µm, and the release film layer ( 6) is formed to a thickness of 20 to 30㎛.

The thickness of the metal vapor deposition film of the vapor deposition layer 4 of the vapor deposition film layer 10 is excellent in a concealment force, a reflection force, etc. in the range of 200-1000 GPa. The thickness of the deposited film is preferably in the range of approximately 0.5 to 5 kPa in view of the surface resistance of the deposited film. Metal deposition for forming the vapor deposition layer 4 is carried out in an atmosphere having a vacuum degree of 1.0 × 10 ⁻³ Torr or less. If the vacuum degree is larger than this value, the physical properties of the deposited film are extremely weak. Generally, the preferable range of the vacuum degree which vaporizes is 2.0 x 10 <^-4> Torr or less.

As a preferred example, the deposition layer 4 is formed to a thickness of 300 to 500 kPa, the print layer 3 is formed to a thickness of 4 to 6 µm, and the PET film layer 2 is formed to a thickness of 40 to 80 µm. The clear coating layer 40 is formed to have a thickness of 2 to 7 µm.

More specifically, for example, the above-described clear coating layer 1 is about 2 μm, the PET film layer 2 is about 60 μm, the print layer 3 is about 5 μm, and the adhesive layer 5 is about 2 μm. In the release film layer 6, it is preferable in the embodiment to have a thickness of about 25 μm.

In addition, in the present invention, in order to eliminate the cumbersome process of peeling the release film layer 16 after adhering the deposition film to the base steel sheet by a conventional adhesive coating method, as illustrated in Figure 3, the copolymer PET, copolymerized PET , PP, PE film was attached to the adhesive by heat fusion method.

Referring to the manufacturing process of the deposited steel sheet according to the configuration of the present invention, to remove the peeling film of the adhesive film-deposited deposition film on the surface of the steel sheet proceeding at a line speed of 20 ~ 70mpm of continuous working process and the adhesive surface of the deposition film Or the process of adhering by means of thermal fusion, and adhering the deposited deposition film as an elastic rubber roll and adhering it to the base steel sheet. In the case of adhesion by thermal fusion of the deposition film, 120 to 210 degrees Celsius. It is preferable to manufacture so as to enable thermal fusion bonding in the range of the figure.

In addition, as a pretreatment of the steel sheet, phosphate or chromate treatment, or epoxy or polyester based PCM prima roll coated on the upper surface or the back of the steel sheet, heated and dried at 120 to 290 degrees Celsius to prepare and use the steel sheet. More preferred.

* General Characteristics of Paints *

The primer and back coating for applying to the deposited steel sheet according to the present invention, maximize the adhesion between the deposited film and the base steel sheet, and to maximize the workability (elongation) and corrosion resistance.

In other words, the PCM coating of the prima coating layer 30 or the back coating layer 40 formed by coating on the upper surface or the back surface of the base steel sheet layer 20 has a phenomenon of cracking (cracks) at the processing site. Epoxy- or polyester-based PCM coatings are used that do not occur and have good elongation of the coating film and excellent corrosion resistance.

Particularly, in the case of undercoating prima, it is preferable to use an epoxy-based or polyester-based resin as a base (base) so as to give flexibility to the deposited film layer 10 so as to have a dry coating thickness of 5 to 15 µm.

Various performance test methods for the product according to the present invention described above are as follows.

(1) Wear resistance measurement

Through the pencil hardness H, 2H, 3H to observe the occurrence of scratches on the deposited film.

(2) Acceleration weather resistance measurement (based on KS-M-5982)

After the accelerated weathering test, the lightness and ㅿ b (yellowness) of the CIE are measured using a colorimeter.

Measuring device: Color Difference Meter (200, MINOLTA, Japan)

Measurement condition: accelerated weathering tester (US, ATLAS, surface measurement after 6 days after repeated 12 hours of UV and water spraying for 24 hours).

* ㅿ b: (+) value yellow, (-) value blue / The yellow value becomes larger as the value is equivalent.

* Color: Displays the brightness (whiteness) of the color./The higher the value, the brighter.

(3) Corrosion resistance measurement (based on KS-D-9502)

After the salt spray test, measure the extent of the brister formation.

Measurement conditions: 6 days at a salt spray tester (Japan, SUGA, IOS type) at a temperature of 35 ± 2 ℃, humidity of 95% or more, 5% Nacl, specimen angle 60 °, salt spraying 0.5 ~ 3cc / hr Measure the area of corrosion after elapse.

(4) heat resistance

Visually observe the appearance of the deposited steel sheet after 3 hours in a water bath at 100 ° C.

(5) adhesive

The adhesion between the deposited film layer and the base metal after two days in a circular oven at 100 ° C. is measured.

(6) surface appearance

It is determined whether printing of various colors and patterns is possible depending on the mechanism difference according to the manufacturing method of the deposition film.

(7) processability

After the T-bending test, the deposited steel sheet was visually observed for cracking.

Based on the test method described above, the test was carried out under various conditions, and the test results thereof are shown in Table 1.

(Examples 1 and 2)

As the base steel sheet, a phosphate-treated electrogalvanized steel sheet having a thickness of 0.4 mm, a width of 914 mm, and a coating weight of 20 g / m ² was used, and a vapor deposition film was attached on the upper surface thereof on a continuous work line.

At this time, the layer structure of the deposited film used was a PET film (metal-deposited polyester film of SKC Co., Ltd.) of which the main repeating unit is 60% by weight or more made of ethylene terephthalate, and the UV clear coating layer (1) on the top. After the hairline treatment on the lower part, a suitable pattern and color was printed, and the water-dispersible polyurethane resin was applied in an amount of 0.01 to 0.5 g / m ² , and then aluminum was deposited to a thickness of 400 kPa in the vapor deposition machine. ) Was formed.

Thereafter, coating was finally performed for adhesion to the base steel sheet. And the part of the adhesive treatment with the steel sheet used two types of adhesive coating treatment method using an adhesive and heat welding adhesive method using a thermal fusion film.

(Example 3)

Except that the acrylic clear treatment on the upper surface of the deposited film was prepared in the same manner as in Example 1.

Experimental Example 4

It was prepared in the same manner as in Example 1 except that the clear surface of the acrylic film was not subjected to the clear treatment and printing treatment.

(Example 5)

A steel sheet was prepared in the same manner as in Example 1 except that the primer and the back coating were treated.

Comparative Example 1

As illustrated in FIG. 2, aluminum is first deposited on the upper surface of the PET film layer 12 to form a deposition layer 14, and an acrylic clear coating layer 11 is formed by secondly acryl-based clear treatment. On the lower part of the PET film layer 12, a deposition film of the front reflection type coated with an adhesive was attached to an aluminum substrate with a thickness of 0.5 mm and a width of 914 mm.

Category Wear resistance Corrosion resistance Heat resistance Adhesive Surface appearance Weather resistance Machinability H 2H 3H Deposition steel sheet of the present invention Example 1 ◎ △ ○ ○ ◎ ◎ ○ Example 2 ◎ △ ◎ ◎ ◎ ◎ ○ Example 3 × △ ○ ○ ◎ ○ △ Example 4 × △ ○ ○ × ○ △ Example 5 ◎ ○ ○ ○ ◎ ◎ ○ Conventional Steel Sheet Comparative Example 1 × △ × × × ○ △

(◎ Very good, can be expressed, ○ Good, △ Normal, × Bad, can not be expressed)

According to the test results of Table 1, the deposited steel sheet according to the present invention was found to be superior in surface appearance, abrasion resistance, heat resistance, corrosion resistance, adhesiveness, weather resistance and workability than the conventional general deposition steel sheet.

In addition, the deposition film of the front reflection type in the conventional deposition steel sheet for fluorescent lamp reflector as shown in Figure 2, the deposition film is easily exposed to the outside because the deposition and clear processing is sequentially performed on the upper portion of the PET film layer 12. Not only is weak in heat resistance, abrasion resistance, etc., but the printing layer is concealed by the deposition film layer which is processed secondly on top of the PET film layer 12 in consideration of the external appearance, so that the printed layer is beautiful. There is a disadvantage that can not utilize the effect of the exterior, but in the case of the deposited film according to the present invention has an effect that can overcome all of the conventional disadvantages.

That is, with respect to external physical pressure, the UV clearing clear coating layer 1 having excellent abrasion resistance, processability, and corrosion resistance exhibits excellent physical properties on the surface, and the corrosion resistance is between the material layer and the film. The anticorrosive effect is exhibited by self-defense, sacrificial anticorrosion, etc. at the interface of, and in the heat resistance, adhesion and weather resistance, it is ensured by using an acrylic or polyurethane adhesive. In addition, by adhering the heat-sealed film as needed, it is possible to eliminate the peeling process in the conventional adhesive coating method, that is, the peeling process of the peeling film required when the deposition film is bonded to the base steel sheet, shortening the manufacturing process of the deposited steel sheet There are possible advantages.

In addition, in terms of surface appearance, after the hairline treatment with abrasive marks treatment to visually feel the metallic texture on the inner surface of the PET film layer 2 according to the intended use, various beautiful colors and patterns are printed and gold, silver, Not only the appearance is beautiful by the metal deposition that can give the texture and texture of the metal itself such as stainless steel, but also the embossed rolls with the irregularities are pressed on the steel plate according to the demand of the consumer. It can also be used as a decorative steel sheet by forming a more beautiful shape.

In the present invention described above by way of example, the results of the test by limiting the electro-galvanized steel sheet and aluminum steel sheet, but the steel sheet is not limited to this, but also applicable to other steel sheets (holding steel sheet) and the effects thereof as well as the above Of course, the same effect can be achieved.

Claims (10)

A steel plate layer 20, A primer coating layer 30 to which an epoxy- or polyester-based paint is selectively applied on the base steel sheet layer 20 to give elongation, corrosion resistance, and adhesion; A deposition film layer 10 formed on the base steel sheet layer 20 or the primer coating layer 30 to have printing characteristics and deposition adhesiveness; A deposition steel sheet comprising an embossed layer (50) formed by embossing to have an uneven pattern on the deposition film layer (10). The deposited steel sheet according to claim 1, further comprising a back coating layer (40) formed on the lower side of the base steel sheet layer (20). The method of claim 1, wherein the vapor deposition film layer 10 is a UV-clear clear coating layer (1) for excellent wear resistance and processability, the surface treatment of the water-dispersible polyurethane to excellent printing properties and deposition adhesion PET film layer (2), hairline layer (7) with abrasive marks on PET film to give a metallic texture visually, pigments, acrylic and vinyl resins, NC, organic solvents, etc. to show various colors and patterns Printing layer 3, silver, aluminum, gold, copper, zinc, chromium, nickel, tin, stainless steam, titanium, and the like, by vacuum depositing at least one metal to give a color unique to the metal, or Evaporation deposition (4) with improved reflectivity, adhesive coating method for coating acrylic or polyurethane-based adhesives depending on the use, or heat-fusion method by attaching a copolymerized PET, PP or PE film A deposition method characterized in that the adhesive layer (5), which is formed to bond to improve the adhesion and weatherability of the base steel sheet and the deposited film, and the release film layer of PE and EVA film to be adhered, especially when using an adhesive coating method, is selectively formed. Grater. 4. The deposited steel sheet according to claim 3, wherein the clear coating layer (1), the printing layer (3), the adhesive layer (5), the hairline layer (7) and the release film layer (6) are selectively formed. The method according to claim 3, wherein the deposition layer 4 of the deposition film layer 10 is formed to a thickness of 300 ~ 500Å, the printing layer 3 is formed to a thickness of 4 ~ 6㎛, PET film layer (2) Is a deposition steel sheet formed to a thickness of 40 ~ 80㎛, the clear coating layer (1) is formed to have a thickness of 2 ~ 7㎛. 5. The film deposition method according to claim 4, wherein the deposition layer 4 of the deposition film layer 10 is formed to a thickness of 300 to 500 kPa, the printing layer 3 is formed to a thickness of 4 to 6 mu m, and the PET film layer 2 is formed. Silver-deposited steel sheet formed in the thickness of 40-80 micrometers, and the clear coating layer 1 formed so that it may have a thickness of 2-7 micrometers. 5. The method of claim 4, wherein in forming the adhesive layer 5, in the case of adhesive coating, the thickness of the adhesive coating film is 1 to 5 탆, and the thickness of the thermal fusion film is 15 to 30 탆. The release film layer 6 is a deposited steel sheet formed to a thickness of 20 to 30㎛. In manufacturing the deposited steel sheet, to remove the peeled film of the adhesive-coated deposition film on the surface of the steel sheet proceeding at a line speed of 20 ~ 70mpm of continuous working process and attach the adhesive surface of the deposited film or adhere by heat fusion And a step of adhering the deposited deposition film to the base steel sheet by compressing the attached deposition film as an elastic rubber roll. The method of claim 8, wherein in the case of thermal fusion bonding of the deposited film, the thermal fusion to the base steel sheet is performed at 120 to 210 degrees Celsius. The method according to claim 8, wherein as a pretreatment of the steel sheet, the surface of the steel sheet is coated with an epoxy or polyester prima at a thickness of 5 to 15 micrometers to the undercoat or the back coat layer 40 to 120 degrees Celsius to 290 degrees Celsius. The method of manufacturing a deposited steel sheet further comprising the step of preparing a steel sheet by heating and drying the road.

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