WO2015190629A1 - Color steel plate and method for manufacturing same - Google Patents

Color steel plate and method for manufacturing same Download PDF

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Publication number
WO2015190629A1
WO2015190629A1 PCT/KR2014/005137 KR2014005137W WO2015190629A1 WO 2015190629 A1 WO2015190629 A1 WO 2015190629A1 KR 2014005137 W KR2014005137 W KR 2014005137W WO 2015190629 A1 WO2015190629 A1 WO 2015190629A1
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WO
WIPO (PCT)
Prior art keywords
steel sheet
top coat
color steel
resin film
manufacturing
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PCT/KR2014/005137
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French (fr)
Korean (ko)
Inventor
박성호
김윤석
서현용
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포스코강판 주식회사
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Priority to PCT/KR2014/005137 priority Critical patent/WO2015190629A1/en
Publication of WO2015190629A1 publication Critical patent/WO2015190629A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure

Definitions

  • the present invention relates to a color steel sheet used for the exterior plate material of a home appliance, interior and exterior materials for building, and a method of manufacturing the same.
  • Colored steel sheets used for exterior boards of home appliances, interior and exterior materials for constructions, etc. form a coat of coating (sometimes referred to as 'hado') and a coat of coating (sometimes referred to as 'top coat') on the surface of the base steel sheet, Various patterns and designs are applied by attaching or printing to meet product specifications.
  • the colored steel sheet is dried on the surface of the converted steel sheet, coated with a coat, baked in an oven, coated with a top coat, baked in an oven, clear coated, and then passed through an oven. It was prepared by the method. If necessary, a color steel sheet having a color layer was prepared by adding a pattern by a top coat and baking after printing. At this time, in order to secure a plurality of color layers may be manufactured by repeating the top coat and baking process several times.
  • One aspect of the present invention is to produce a color steel sheet, by baking the undercoat and top coat at a time, compared to the conventional technology of repeatedly forming the film and baking, compared to the prior art technology that can improve the productivity and reduce the manufacturing cost To provide a method of manufacturing and the color steel sheet manufactured using the same.
  • One aspect of the present invention comprises the steps of preparing a steel sheet treated with chemical conversion
  • It provides a method for producing a color steel sheet comprising the step of forming a creeper film after the baking treatment, and baking treatment.
  • Another aspect of the present invention is a steel sheet having a chemical conversion layer
  • One or more top coats formed on the bottom coats are One or more top coats formed on the bottom coats.
  • the top coat provides a color steel sheet formed in a non-contact manner using a resin film generator.
  • the present invention has the advantage that the top coat can be formed in the wet state of the bottom coat using a resin film generator, and also the top coat can be easily formed in two or more layers.
  • the manufacturing process can be simplified, manufacturing cost can be reduced, and the competitiveness of the product can be improved.
  • the multilayer coated steel sheet produced by the resin film generator coating of the present invention can minimize defects in which foreign matter or fine dust is mixed since the paint is supplied in a closed circulation structure, and there is no deterioration of quality due to physical contact, resulting in a high-quality beautiful product. Not only can it be mass-produced, but it can also easily produce thick film thickness.
  • FIG. 1 is a schematic diagram showing a process for manufacturing a conventional color steel sheet.
  • Figure 2 is a schematic diagram showing a process for producing a colored steel sheet in the present invention.
  • Figure 3 is a schematic diagram showing the process of forming the top coat using the formation of the undercoat film and the resin film generator in the present invention.
  • FIG. 4 is a schematic diagram illustrating a process of manufacturing a color steel sheet using a resin film generator having an inner partition as another example of the present invention.
  • the inventors of the present invention have come to the present invention to recognize a problem that the production process is long and a large amount of heat source for baking is required according to the conventional color steel plate manufacturing method.
  • 1 schematically shows a process for producing a conventional colored steel sheet.
  • baking treatment 130 is performed, and the top coat forming roll 140 is again formed.
  • the top coat by using the baking treatment 150, and using the Cree film forming roll 160 to form a Cree film, and then baking process 170 to produce a color steel sheet.
  • the conventional method includes three film formation and three baking processes, such as undercoat, baking, topcoat, baking, creeper coating, and baking treatment. For this reason, there exists a problem that process time becomes long and a cost increases in order to provide the heat source required for a baking process.
  • the color steel sheet manufacturing method of the present invention comprises the steps of preparing a steel sheet treated with chemical conversion; Forming a coat on the base steel sheet; Forming a top coat on the base steel plate on which the bottom coat is formed by using a resin film generator; Baking the base steel sheet on which the top coat is formed; And forming a cree coat after the baking treatment and baking.
  • FIG. 2 An example of the manufacturing method of the color steel plate of this invention is shown in FIG. Referring to FIG. 2, the undercoat is formed on the formed steel sheet 210 using the undercoat forming roll 220, and the top coat is formed using the resin film generator 280.
  • the present invention is characterized in that there is no baking process after forming the undercoat. After forming the top coat using the resin film generator 280, the baking process 250 is performed. At this time, through the baking treatment, there is an advantage that the top coat and the bottom coat can be dried at the same time. Thereafter, a process of forming a cree coat and baking process 270 using the cree coat forming roll 260 is included. Meanwhile, reference numeral 290 in FIG. 2 corresponds to an atmosphere chamber that accommodates the resin film generator 280 and forms a vacuum atmosphere.
  • FIG. 3 An example of a resin film generator that can be used in the present invention is illustrated in FIG. 3.
  • the resin film generator applicable to the present invention is installed in a chamber 390 capable of maintaining a vacuum atmosphere, and the resin film generator 380 is a paint injection port 381 and a paint injection material.
  • the top coat is coated with a resin film generator after the undercoat 323 is transferred to the chemically treated steel sheet by the undercoat transfer roll 322, and the undercoat is not dried. 384 is transferred and formed.
  • the resin film generator is a method in which the base paint of the top coat is extruded and coated from the nozzle of the resin film generator provided in one or more in the longitudinal direction of the steel sheet. At this time, the thickness of the coating film can be controlled by adjusting the nozzle gap of the resin film generator.
  • the top coat film can be formed two or more times by using the resin film generator to form two or more top coat films.
  • the above two methods may be used in combination.
  • the resin film generator forms a top coat by applying a top coat to the steel plate on which the undercoat is formed.
  • a resin film generator is provided at a position spaced at least 1 mm from the upper portion of the undercoat to apply a top coat material. More preferably, it is performed at a position spaced 10-20 mm apart.
  • Conventional slot die systems generally have a coating of several micrometers or less on a thin, flexible material in the form of a film such as PVC.
  • the material is contacted without space between the slot die nozzle, and the material is pressed against the slot die little by little, the pressure is reduced, and the coating material is naturally separated from the nozzle by the force pushed out of the nozzle. do.
  • the metal in particular, the steel sheet material and the nozzle of the slot die is in contact with the coating, a spark is generated, and a reaction occurs with a solvent diluted in the paint, thereby causing a risk of explosion.
  • the present invention uses a coating apparatus called a resin film generator, rather than a conventional slot die.
  • the resin film generator is a method of extruding a certain amount of coating film at a predetermined distance between the material and the coating machine to make a film in the form of a coating film, and then coating the coating film on the material as it is.
  • the top coat using the resin film generator there may be a thickness deviation of about 50 ⁇ m of the steel sheet material as in the present invention, and a wave is formed at the edge or the center portion. Since it may occur, it is preferable that the resin film generator is located at a position spaced at least 1 mm or more. On the other hand, when spaced more than 300mm, if the coating is a high viscosity paint film may not be formed, there is a risk of shaking or mixing of foreign matter by the external air flow.
  • the base steel sheet in the present invention is not particularly limited as long as it can be used for the purpose of the color steel sheet. Therefore, a carbon steel sheet, a stainless steel sheet, or the like may be used, and a plated steel sheet including a plating layer may also be used.
  • the plated steel sheet is not particularly limited as long as it can be used in the technical field to which the present invention belongs, and may be an aluminum-based plated steel sheet, a zinc-based plated steel sheet, a metal alloy plated steel sheet, or the like.
  • the present invention relates to a colored steel sheet for the steel sheet, but the technical idea of the present invention is not necessarily limited to the steel sheet, various kinds of sheet material, for example, aluminum coil-shaped plate, magnesium coil-shaped plate, copper coil It can be applied to mold and so on.
  • the temperature of the steel sheet is maintained at 60 to 250 ° C. If the temperature of the base steel sheet is maintained at 60 ⁇ 250 °C, bubbles are not mixed in the extruded top coat, there is an advantage that can increase the smoothness of the paint.
  • a chemically treated steel sheet is used, and the chemical conversion treatment is applied for corrosion resistance and paint adhesion.
  • a chromium-based or non-chromium-based material may be used for the chemical conversion treatment, and the chemical conversion treatment layer of the chemically treated steel sheet may have a thickness of 1.0 ⁇ m to 4.0 ⁇ m.
  • the formation of the chemical conversion layer is not limited in its method, but is typically performed through a roll coater.
  • the chemical conversion layer is thinner than 1.0 ⁇ m, when damage occurs to the coat or top coat, the steel sheet material may be exposed, which may cause corrosion of the steel sheet.
  • the chemical conversion treatment agent increases the cost, it is difficult to expect the effect of corrosion resistance against thickness anymore, it is preferable not to exceed 4.0 ⁇ m.
  • the undercoat is performed to improve adhesion and clarity with the top coat, and it is sufficient that the undercoat is formed of a material generally used in the art.
  • a paint containing 5.0 to 20.0% by weight of a polyester resin containing an rust preventive pigment is used.
  • the method of forming the undercoat is preferably formed by a roll coating method, but is not necessarily limited thereto.
  • the said undercoat coat is 4.0-10.0 micrometers in thickness after drying.
  • the top coat material is preferably a base paint which is at least one mixture selected from polyester, modified polyester, high polymer polyester, silicone, fluorine type, and acrylic urethane.
  • the top coat layer After the said top coat is formed, it is preferable to perform baking process at 100-400 degreeC.
  • the baking treatment temperature is less than 100 ° C.
  • the top coat layer may not be completely dried. If the temperature exceeds 400 ° C., the resin material may be deformed to deform and damage the coating layer.
  • a creeper film is formed and a baking treatment is performed.
  • printing processing can be performed before the creeping film treatment.
  • the present invention is not particularly limited with respect to the creeping process and the printing process, and any method that can be applied in the art to which the present invention pertains is sufficient.
  • the color steel plate of this invention is manufactured by the said method.
  • the color steel sheet of the present invention includes a base steel sheet having a chemical conversion treatment layer, a bottom coat formed on the base steel sheet, and one or more top coats formed on the bottom coat, wherein the top coat is formed using a resin film generator. It is formed contactlessly.
  • a color steel sheet having two or more colors it is possible to manufacture a color steel sheet having two or more colors.
  • two or more paints for forming a top coat may be accommodated by installing an inner partition 485 inside the resin film generator 480.
  • the top coat has an advantage that two or more colors may be simultaneously formed. Through this, there is an advantage that can produce a multi-colored steel sheet with a beautiful surface.
  • the type or shape of the inner partition is not limited, and it is sufficient that two or more paints can be separated inside the resin film generator, and when the films are formed simultaneously through the nozzles 483, different paints may not be mixed. It is desirable to be able to maintain the interval.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention relates to a color steel plate, which is used as an exterior plate of a home appliance, an interior/exterior material for construction, etc., and a method for manufacturing the same.

Description

컬러 강판 및 그 제조방법 Colored steel sheet and its manufacturing method
본 발명은 가전제품의 외형 판재, 건축용 내외장재 등에 사용되는 컬러 강판과 이를 제조하는 방법에 관한 것이다.The present invention relates to a color steel sheet used for the exterior plate material of a home appliance, interior and exterior materials for building, and a method of manufacturing the same.
가전제품의 외형 판재, 건축용 내외장재 등에 사용되는 컬러 강판은 소지강판 표면에 하도 피막(간략히 '하도'라 하기도 함) 및 상도 피막(간략히 '상도'라 하기도 함)을 형성한 후, 표면에 필름을 부착하거나 인쇄기법을 이용하여 여러가지 패턴과 디자인을 적용하여 제품 사양을 충족시키고 있다. Colored steel sheets used for exterior boards of home appliances, interior and exterior materials for constructions, etc. form a coat of coating (sometimes referred to as 'hado') and a coat of coating (sometimes referred to as 'top coat') on the surface of the base steel sheet, Various patterns and designs are applied by attaching or printing to meet product specifications.
이와 같은 컬러 강판은 화성처리된 강판의 표면을 건조시킨 후, 하도를 코팅하고, 오븐으로 베이킹 한 후, 다시 상도를 코팅하여 오븐으로 베이킹 하고, 크리어(clear) 코팅을 한 후, 오븐에 통과시키는 방법으로 제조하였다. 여기에 필요하다면 상도 코팅 및 베이킹 후 인쇄방식으로 패턴을 추가하여 컬러층을 갖는 컬러 강판을 제조하였다. 이때, 다수의 컬러층을 확보하기 위해서는 상도 코팅과 베이킹 공정을 여러차례 반복함으로써 제조하기도 한다.The colored steel sheet is dried on the surface of the converted steel sheet, coated with a coat, baked in an oven, coated with a top coat, baked in an oven, clear coated, and then passed through an oven. It was prepared by the method. If necessary, a color steel sheet having a color layer was prepared by adding a pattern by a top coat and baking after printing. At this time, in order to secure a plurality of color layers may be manufactured by repeating the top coat and baking process several times.
그러나, 상기와 같은 방식에서는 하도, 상도, 크리어 또는 하도, 상도, 인쇄, 크리어 처리를 하면서, 최소 3번의 코팅과 3번의 베이킹 처리를 해야 하므로, 생산공정이 길어질 수 밖에 없다. 뿐만 아니라, 추가적인 컬러층을 확보하기 위해 코팅과 베이킹을 추가하게 되면, 상기 생산공정은 더욱 길어질 수밖에 없고, 이를 위한 공간 확보도 병행되어야 하는 문제가 있다. 또한, 코팅을 할 때마다 베이킹 처리를 해야하기 때문에, 베이킹을 위한 열원을 확보하여야 하며, 이때 에너지 비용이 증대되는 문제가 있다.However, in the above manner, at least three coatings and three baking treatments must be performed while the bottom coat, top coat, cree or top coat, top coat, printing, and cree treatment, which inevitably increases the production process. In addition, when coating and baking are added to secure an additional color layer, the production process is inevitably longer, and there is a problem that space must be secured for this purpose. In addition, since the baking process must be performed every time the coating is performed, a heat source for baking must be secured, and there is a problem in that the energy cost is increased.
본 발명의 일측면은 컬러 강판을 제조함에 있어서, 하도 피막과 상도 피막을 한번에 베이킹 처리함으로써, 피막 형성과 베이킹을 반복적으로 행하는 종전 기술에 비해, 생산성이 향상되고 제조비용을 절감할 수 있는 컬러 강판의 제조방법과 이를 이용하여 제조된 컬러 강판을 제공하고자 하는 것이다.One aspect of the present invention is to produce a color steel sheet, by baking the undercoat and top coat at a time, compared to the conventional technology of repeatedly forming the film and baking, compared to the prior art technology that can improve the productivity and reduce the manufacturing cost To provide a method of manufacturing and the color steel sheet manufactured using the same.
본 발명의 일태양은 화성처리된 소지강판을 준비하는 단계;One aspect of the present invention comprises the steps of preparing a steel sheet treated with chemical conversion;
상기 소지강판에 하도 피막을 형성하는 단계;Forming a coat on the base steel sheet;
상기 하도 피막이 형성된 소지강판에 수지막 생성기를 이용하여 상도 피막을 형성하는 단계;Forming a top coat on the base steel plate on which the bottom coat is formed by using a resin film generator;
상기 상도 피막이 형성된 소지강판을 베이킹 처리하는 단계; 및Baking the base steel sheet on which the top coat is formed; And
상기 베이킹 처리 후 크리어 피막을 형성하고, 베이킹 처리하는 단계를 포함하는 컬러 강판의 제조방법을 제공한다.It provides a method for producing a color steel sheet comprising the step of forming a creeper film after the baking treatment, and baking treatment.
본 발명의 또다른 태양은 화성처리층을 갖는 소지강판; Another aspect of the present invention is a steel sheet having a chemical conversion layer;
상기 소지강판 상에 형성된 하도 피막; 및An undercoat film formed on the base steel sheet; And
상기 하도 피막 상에 형성된 1층 이상의 상도 피막을 포함하고, One or more top coats formed on the bottom coats,
상기 상도 피막은 수지막 생성기를 이용하여 비접촉식으로 형성된 컬러 강판을 제공한다.The top coat provides a color steel sheet formed in a non-contact manner using a resin film generator.
본 발명에 의하면, 종래에 3코팅 3베이킹 처리를 위해 요구된 설비 및 공간을 절감할 수 있어, 설비보완 및 투자비용이 크게 감소하는 효과가 있다.According to the present invention, it is possible to reduce the equipment and space conventionally required for the three-coating three baking process, there is an effect that the equipment supplement and investment costs are greatly reduced.
특히, 본 발명은 수지막 생성기를 이용하여 하도 피막의 습식상태에서 상도 피막을 형성할 수 있고, 또한 상도 피막을 2층 이상 손쉽게 형성할 수 있는 장점이 있다. 이를 통해, 다층의 컬러 강판을 제조함에 있어서, 제조공정이 단순화되고, 제조원가를 절감할 수 있어, 제품의 경쟁력이 향상될 수 있다.In particular, the present invention has the advantage that the top coat can be formed in the wet state of the bottom coat using a resin film generator, and also the top coat can be easily formed in two or more layers. Through this, in manufacturing the multi-colored steel sheet, the manufacturing process can be simplified, manufacturing cost can be reduced, and the competitiveness of the product can be improved.
또한, 본 발명의 수지막 생성기 코팅으로 생산되는 다층 도장강판은 도료가 폐순환 구조로 공급되므로 이물질 또는 미세먼지가 혼입되는 불량을 최소화 할 수 있고, 물리적 접촉에 의한 품질저하가 없어 고품질의 미려한 제품을 대량생산 할 수 있을 뿐 아니라, 두꺼운 도막두께도 간편하게 생산 할 수 있게 된다.In addition, the multilayer coated steel sheet produced by the resin film generator coating of the present invention can minimize defects in which foreign matter or fine dust is mixed since the paint is supplied in a closed circulation structure, and there is no deterioration of quality due to physical contact, resulting in a high-quality beautiful product. Not only can it be mass-produced, but it can also easily produce thick film thickness.
도 1은 종래 컬러 강판을 제조하는 공정을 나타낸 모식도임.1 is a schematic diagram showing a process for manufacturing a conventional color steel sheet.
도 2는 본 발명에서 컬러 강판을 제조하는 공정을 나타낸 모식도임.Figure 2 is a schematic diagram showing a process for producing a colored steel sheet in the present invention.
도 3은 본 발명에서 하도 피막의 형성 및 수지막 생성기를 이용하여 상도 피막을 형성하는 공정을 나타낸 모식도임.Figure 3 is a schematic diagram showing the process of forming the top coat using the formation of the undercoat film and the resin film generator in the present invention.
도 4는 본 발명의 또 다른 일예로서, 내부 격벽을 갖는 수지막 생성기를 이용하여 컬러강판을 제조하는 공정을 나타낸 모식도임.4 is a schematic diagram illustrating a process of manufacturing a color steel sheet using a resin film generator having an inner partition as another example of the present invention.
본 발명의 발명자들은 종래의 컬러 강판 제조방법에 의하면, 생산 공정이 길어지고, 베이킹을 위한 열원이 다량 필요한 문제를 인지하게 본 발명에 이르게 되었다. 도 1은 종래의 컬러 강판을 제조하는 공정을 모식적으로 나타낸 것이다. The inventors of the present invention have come to the present invention to recognize a problem that the production process is long and a large amount of heat source for baking is required according to the conventional color steel plate manufacturing method. 1 schematically shows a process for producing a conventional colored steel sheet.
도 1에 나타난 바와 같이, 종래에는 화성처리된 소지강판(110)에 하도 피막 형성 롤(120)을 이용하여 하도 피막을 형성한 후, 베이킹처리(130)하고, 다시 상도 피막 형성 롤(140)을 이용하여 상도 피막을 형성한 후, 이를 베이킹처리(150)하고, 크리어 피막 형성 롤(160)을 이용하여 크리어 피막을 형성한 후 베이킹 처리(170)하는 과정을 포함하여 컬러 강판을 제조하였다. As shown in FIG. 1, conventionally, after forming the undercoat by using the undercoat forming roll 120 on the chemically treated steel sheet 110, baking treatment 130 is performed, and the top coat forming roll 140 is again formed. After forming the top coat by using the baking treatment 150, and using the Cree film forming roll 160 to form a Cree film, and then baking process 170 to produce a color steel sheet.
상기 도 1과 같이 종래의 방식에서는 하도 피막, 베이킹, 상도 피막, 베이킹, 크리어 피막, 베이킹 처리와 같이, 3번의 피막 형성과 3번의 베이킹 과정을 포함한다. 이 때문에, 공정시간이 길어지게 되고, 베이킹 공정에 필요한 열원을 마련하기 위해, 비용이 증가하는 문제가 있다. As shown in FIG. 1, the conventional method includes three film formation and three baking processes, such as undercoat, baking, topcoat, baking, creeper coating, and baking treatment. For this reason, there exists a problem that process time becomes long and a cost increases in order to provide the heat source required for a baking process.
이에 본 발명의 발명자들은 상기 문제점 등을 해결하기 위해서, 본 발명을 도출하게 되었다. In order to solve the above problems, the inventors of the present invention have led to the present invention.
이하에서 도면을 참고하여, 본 발명에 대해 상세히 설명한다. 본 발명에 포함된 도면은 본 발명의 이해를 위한 것일 뿐, 본 발명을 한정하는 것은 아니다. Hereinafter, with reference to the drawings, the present invention will be described in detail. The drawings included in the present invention are only for understanding of the present invention, but not for limiting the present invention.
본 발명의 컬러 강판 제조방법은 화성처리된 소지강판을 준비하는 단계; 상기 소지강판에 하도 피막을 형성하는 단계; 상기 하도 피막이 형성된 소지강판에 수지막 생성기를 이용하여 상도 피막을 형성하는 단계; 상기 상도 피막이 형성된 소지강판을 베이킹 처리하는 단계; 및 상기 베이킹 처리 후 크리어 피막을 형성하고, 베이킹 처리하는 단계를 포함한다.The color steel sheet manufacturing method of the present invention comprises the steps of preparing a steel sheet treated with chemical conversion; Forming a coat on the base steel sheet; Forming a top coat on the base steel plate on which the bottom coat is formed by using a resin film generator; Baking the base steel sheet on which the top coat is formed; And forming a cree coat after the baking treatment and baking.
본 발명의 컬러 강판 제조방법의 일예를 도식화하여 도 2에 나타내었다. 도 2를 참조하면, 화성처리된 소지강판(210)에 대해 하도 피막 형성 롤(220)을 이용하여 하도 피막을 형성하고, 수지막 생성기(280)를 이용하여, 상도 피막을 형성한다. 본 발명에서는 하도 피막을 형성한 이후에, 베이킹하는 과정이 없는 점에 특징이 있다. 상기 수지막 생성기(280)를 이용하여 상도 피막을 형성한 이후, 베이킹 처리(250)를 행한다. 이때 베이킹 처리를 통해, 상도 피막과 하도 피막을 동시에, 건조시킬 수 있는 장점이 있다. 이후, 크리어 피막 형성 롤(260)을 이용하여 크리어 피막을 형성하고 베이킹 처리(270)하는 과정을 포함한다. 한편, 도 2에서 미설명 부호 290은 수지막 생성기(280)를 수용하고, 진공 분위기를 형성하는 분위기 챔버에 해당한다.An example of the manufacturing method of the color steel plate of this invention is shown in FIG. Referring to FIG. 2, the undercoat is formed on the formed steel sheet 210 using the undercoat forming roll 220, and the top coat is formed using the resin film generator 280. The present invention is characterized in that there is no baking process after forming the undercoat. After forming the top coat using the resin film generator 280, the baking process 250 is performed. At this time, through the baking treatment, there is an advantage that the top coat and the bottom coat can be dried at the same time. Thereafter, a process of forming a cree coat and baking process 270 using the cree coat forming roll 260 is included. Meanwhile, reference numeral 290 in FIG. 2 corresponds to an atmosphere chamber that accommodates the resin film generator 280 and forms a vacuum atmosphere.
본 발명에서 사용될 수 있는 수지막 생성기의 일예를 도식화하여 도 3에 나타내었다. 도 3에 나타난 바와 같이, 본 발명에서 적용될 수 있는 수지막 생성기는 진공분위기를 유지할 수 있는 챔버(390)내에 설치되며, 상기 수지막 생성기(380)는 도료를 주입하는 도료 주입구(381)와 도료를 배출하는 도료 배출구(383) 즉, 노즐이 구비되어 있다.An example of a resin film generator that can be used in the present invention is illustrated in FIG. 3. As shown in FIG. 3, the resin film generator applicable to the present invention is installed in a chamber 390 capable of maintaining a vacuum atmosphere, and the resin film generator 380 is a paint injection port 381 and a paint injection material. A paint discharge port 383, that is, a nozzle for discharging the gas, is provided.
상기 도 3에 나타난 바와 같이, 상기 상도 피막은 화성처리된 강판 표면에 하도 전사롤(322)에 의해 하도 피막(323)이 전사된 후, 하도 피막이 건조되지 않은 상태에서 수지막 생성기에 의해 상도 피막(384)이 전사되어 형성된다. As shown in FIG. 3, the top coat is coated with a resin film generator after the undercoat 323 is transferred to the chemically treated steel sheet by the undercoat transfer roll 322, and the undercoat is not dried. 384 is transferred and formed.
상기 수지막 생성기는 강판의 길이방향으로 1개 이상 설치된 수지막 생성기의 노즐로부터 상도 피막의 베이스 도료가 압출되어 코팅되는 방식이다. 이때, 수지막 생성기의 노즐 갭을 조정하여 도막의 두께를 제어할 수 있다. The resin film generator is a method in which the base paint of the top coat is extruded and coated from the nozzle of the resin film generator provided in one or more in the longitudinal direction of the steel sheet. At this time, the thickness of the coating film can be controlled by adjusting the nozzle gap of the resin film generator.
상기 수지막 생성기를 이용하여 상도 피막의 형성을 2회 이상 실시하여, 2층 이상의 상도 피막층을 형성할 수 있다. 이때에는 수지막 생성기를 2대 이상 설치하여 실시하는 방안이 있을 수 있고, 또는 하나의 수지막 생성기에 다수의 노즐을 설치하여 다층으로 형성할 수 있는 방안이 있다. 물론 상기 두가지 방안을 복합적으로 활용할 수도 있다.The top coat film can be formed two or more times by using the resin film generator to form two or more top coat films. In this case, there may be a method of installing two or more resin film generators, or a plurality of nozzles may be installed in one resin film generator to form a multilayer. Of course, the above two methods may be used in combination.
상기 수지막 생성기는 하도 피막이 형성된 강판에 비접촉식으로 상도 도료를 도포하여 상도 피막을 형성한다. 이때 바람직하게는 상기 하도 피막 상부로부터 1mm 이상 이격된 위치에 수지막 생성기가 구비되어, 상도 피막 물질을 도포한다. 보다 바람직하게는 10~20㎜ 이격된 위치에서 행한다.The resin film generator forms a top coat by applying a top coat to the steel plate on which the undercoat is formed. In this case, preferably, a resin film generator is provided at a position spaced at least 1 mm from the upper portion of the undercoat to apply a top coat material. More preferably, it is performed at a position spaced 10-20 mm apart.
통상적인 슬롯 다이 방식은 PVC와 같은 필름형태의 얇고 유연성이 있는 소재에 수㎛ 이하의 코팅을 하는 것이 일반적이다. 이러한 슬롯 다이 방식은 소재와 슬롯 다이 노즐의 간격을 띄우지 않고 접촉시킨 후, 소재가 슬롯 다이 반대편으로 조금씩 밀리면서 압하를 가하고, 코팅제가 노즐에서 밀려나오는 힘에 의해 소재와 노즐이 자연스럽게 이격되면서 코팅이 된다. 그러나, 본 발명에서와 같이 금속 특히 강판 소재와 슬롯 다이의 노즐이 접촉하면서, 코팅하게 되면 스파크가 발생하게 되고, 도료내 희석되어 있는 용제와 반응이 일어나 폭발의 위험이 발생하게 된다.Conventional slot die systems generally have a coating of several micrometers or less on a thin, flexible material in the form of a film such as PVC. In this slot die method, the material is contacted without space between the slot die nozzle, and the material is pressed against the slot die little by little, the pressure is reduced, and the coating material is naturally separated from the nozzle by the force pushed out of the nozzle. do. However, as in the present invention, when the metal, in particular, the steel sheet material and the nozzle of the slot die is in contact with the coating, a spark is generated, and a reaction occurs with a solvent diluted in the paint, thereby causing a risk of explosion.
이러한 문제가 있기 때문에, 본 발명은 통상의 슬롯 다이가 아닌, 수지막 생성기라는 코팅장치를 이용한다. 상기 수지막 생성기는 소재와 코팅기의 일정 거리를 두고 일정량의 도막을 압출하여 도막형태의 필름으로 만든 다음, 그 도막 필름을 그대로 소재위에 얹어서 코팅하는 방식이다. Because of this problem, the present invention uses a coating apparatus called a resin film generator, rather than a conventional slot die. The resin film generator is a method of extruding a certain amount of coating film at a predetermined distance between the material and the coating machine to make a film in the form of a coating film, and then coating the coating film on the material as it is.
상기 수지막 생성기를 이용하여 상도 피막을 형성하는 경우, 본 발명에서와 같은 강판 소재를 약 50㎛ 정도의 두께편차가 있을 수 있고, 에지(edge)나 중심부(center)부에 울음(wave)가 발생할 수 있으므로, 최소한 1㎜ 이상 이격된 위치에서 수지막 생성기가 위치되는 것이 바람직하다. 한편, 300㎜를 초과하여 이격시키는 경우, 도료가 고점도이면 도막필름이 형성되지 않을 수 있으며, 외부 공기 유동에 의해 흔들리거나 이물질이 혼입될 우려가 있다.In the case of forming the top coat using the resin film generator, there may be a thickness deviation of about 50 μm of the steel sheet material as in the present invention, and a wave is formed at the edge or the center portion. Since it may occur, it is preferable that the resin film generator is located at a position spaced at least 1 mm or more. On the other hand, when spaced more than 300mm, if the coating is a high viscosity paint film may not be formed, there is a risk of shaking or mixing of foreign matter by the external air flow.
상기 수지막 생성기로부터 압출되는 상도 도료에는 기포가 혼입되지 않도록 상기 수지막 생성기를 포함하는 챔버(390) 내의 분위기를 760torr 미만으로 관리하는 것이 바람직하다. 이를 통해, 부스 내부의 공기와 이물질이 외부로 배출되도록 함으로서, 상기 상도 도료에 기포가 혼입되는 것을 방지하여, 균일한 상도 피막을 형성할 수 있다.It is preferable to manage the atmosphere in the chamber 390 including the resin film generator to less than 760 torr so that bubbles are not mixed in the top coat material extruded from the resin film generator. Through this, by allowing air and foreign matter inside the booth to be discharged to the outside, it is possible to prevent the mixing of air bubbles in the top coat, thereby forming a uniform top coat.
본 발명에서 소지강판은 컬러 강판의 용도로 사용될 수 있는 것이면, 그 종류를 특별히 한정하지 않는다. 따라서, 탄소강판, 스테인리스 강판 등이 사용될 수 있으며, 도금층을 포함하는 도금강판도 사용될 수 있다. 상기 도금강판은 본 발명이 속하는 기술분야에서 사용될 수 있는 것이면 그 종류를 특별히 한정하는 것은 아니며, 알루미늄계 도금강판, 아연계 도금강판, 금속합금 도금강판 등이 있을 수 있다. The base steel sheet in the present invention is not particularly limited as long as it can be used for the purpose of the color steel sheet. Therefore, a carbon steel sheet, a stainless steel sheet, or the like may be used, and a plated steel sheet including a plating layer may also be used. The plated steel sheet is not particularly limited as long as it can be used in the technical field to which the present invention belongs, and may be an aluminum-based plated steel sheet, a zinc-based plated steel sheet, a metal alloy plated steel sheet, or the like.
한편, 본 발명은 강판을 대상으로 한 컬러 강판에 관한 것이나, 본 발명의 기술적 사상은 반드시 강판에 한정되는 것은 아니며, 다양한 종류의 판재 예를 들면, 알루미늄 코일형 판재, 마그네슘 코일형 판재, 구리 코일형 판재 등에 적용될 수 있다.On the other hand, the present invention relates to a colored steel sheet for the steel sheet, but the technical idea of the present invention is not necessarily limited to the steel sheet, various kinds of sheet material, for example, aluminum coil-shaped plate, magnesium coil-shaped plate, copper coil It can be applied to mold and so on.
한편, 상기 수지막 생성기로부터 상도 도료가 압출되어 상도 피막을 형성할 때, 소지강판의 온도는 60~250℃를 유지하는 것이 바람직하다. 상기 소지강판의 온도가 60~250℃로 유지된다면, 압출된 상도 도료에 기포가 혼입되지 않고, 도료의 평활도를 높일 수 있는 장점이 있다. On the other hand, when the top coat is extruded from the resin film generator to form a top coat, it is preferable that the temperature of the steel sheet is maintained at 60 to 250 ° C. If the temperature of the base steel sheet is maintained at 60 ~ 250 ℃, bubbles are not mixed in the extruded top coat, there is an advantage that can increase the smoothness of the paint.
한편, 본 발명에서는 화성처리된 소지강판을 사용하며, 상기 화성처리는 내식성 및 도장 밀착성을 위해 적용된다. 상기 화성처리에 크롬계 또는 비크롬계 물질이 사용될 수 있으며, 화성처리된 소지강판의 화성처리층은 두께는 1.0~4.0㎛인 것이 바람직하다. On the other hand, in the present invention, a chemically treated steel sheet is used, and the chemical conversion treatment is applied for corrosion resistance and paint adhesion. A chromium-based or non-chromium-based material may be used for the chemical conversion treatment, and the chemical conversion treatment layer of the chemically treated steel sheet may have a thickness of 1.0 μm to 4.0 μm.
상기 화성처리층의 형성은 그 방법이 제한되지 않으나, 통상적으로 롤코터를 통해 형성한다. 상기 화성처리층이 1.0㎛ 미만으로 얇게 되면, 하도나 상도 도막의 손상이 발생한 경우, 강판 소재가 노출되어 강판의 부식이 문제될 수 있다. 한편, 4.0㎛를 초과하여 형성하는 경우에는 화성처리제의 사용이 증가하여 비용이 증가하며, 두께대비 내식성의 효과를 더 이상 기대하기 어려우므로, 4.0㎛를 초과하지 않는 것이 바람직하다.The formation of the chemical conversion layer is not limited in its method, but is typically performed through a roll coater. When the chemical conversion layer is thinner than 1.0 μm, when damage occurs to the coat or top coat, the steel sheet material may be exposed, which may cause corrosion of the steel sheet. On the other hand, when forming more than 4.0㎛ increase in the use of the chemical conversion treatment agent increases the cost, it is difficult to expect the effect of corrosion resistance against thickness anymore, it is preferable not to exceed 4.0㎛.
상기 하도 피막은 상도 피막과의 밀착성 및 선명도를 높이기 위해 행해지는 것으로서, 본 발명이 속하는 기술분야에서 일반적으로 사용되는 물질로 형성되면 충분하다. 바람직한 일예로는 방청안료가 포함된 폴리에스테르 수지 5.0~20.0중량%가 포함된 도료를 사용한다.The undercoat is performed to improve adhesion and clarity with the top coat, and it is sufficient that the undercoat is formed of a material generally used in the art. As a preferred example, a paint containing 5.0 to 20.0% by weight of a polyester resin containing an rust preventive pigment is used.
상기 하도 피막을 형성하는 방법은 도 3에 나타나 바와 같이, 롤 코팅 방식으로 형성하는 것이 바람직하나, 반드시 이에 국한되는 것은 아니다.As shown in Figure 3, the method of forming the undercoat is preferably formed by a roll coating method, but is not necessarily limited thereto.
상기 하도 피막은 건조 후 두께가 4.0~10.0㎛인 것이 바람직하다.It is preferable that the said undercoat coat is 4.0-10.0 micrometers in thickness after drying.
상기 상도 피막 물질은 폴리에스테르, 변성 폴리에스테르, 하이폴리머 폴리에스테르, 실리콘, 불소 타입, 아크릴 우레탄 중에서 선택된 하나 이상의 혼합물인 베이스 도료인 것이 바람직하다. The top coat material is preferably a base paint which is at least one mixture selected from polyester, modified polyester, high polymer polyester, silicone, fluorine type, and acrylic urethane.
상기 상도 피막이 형성된 후, 베이킹 처리는 100~400℃에서 행하는 것이 바람직하다. 상기 베이킹 처리 온도가 100℃ 미만인 경우에는 상기 상도 도막층이 완전히 건조되지 아니할 수 있고, 그 온도가 400℃를 초과할 경우에는 수지 물질의 변형이 이루어져 도막층의 변형과 훼손이 우려될 수 있다.After the said top coat is formed, it is preferable to perform baking process at 100-400 degreeC. When the baking treatment temperature is less than 100 ° C., the top coat layer may not be completely dried. If the temperature exceeds 400 ° C., the resin material may be deformed to deform and damage the coating layer.
상기 베이킹 처리 후에, 크리어 피막을 형하고, 베이킹 처리를 한다. 추가적인 무늬를 확보하기 위해서, 상기 크리어 피막 처리 전에 인쇄처리를 행할 수 있다. 상기 크리어 처리 및 인쇄처리에 대해 본 발명은 특별히 한정하지 않으며, 본 발명이 속하는 기술분야에서 적용될 수 있는 방법이면 족하다.After the baking treatment, a creeper film is formed and a baking treatment is performed. In order to secure an additional pattern, printing processing can be performed before the creeping film treatment. The present invention is not particularly limited with respect to the creeping process and the printing process, and any method that can be applied in the art to which the present invention pertains is sufficient.
본 발명의 컬러 강판은 상기 방법에 의해 제조되는 것이 바람직하다. 구체적으로 본 발명의 컬러 강판은 화성처리층을 갖는 소지강판, 상기 소지강판 상에 형성된 하도 피막 및 상기 하도 피막 상에 형성된 1층 이상의 상도 피막을 포함하고, 상기 상도 피막은 수지막 생성기를 이용하여 비접촉식으로 형성된다. It is preferable that the color steel plate of this invention is manufactured by the said method. Specifically, the color steel sheet of the present invention includes a base steel sheet having a chemical conversion treatment layer, a bottom coat formed on the base steel sheet, and one or more top coats formed on the bottom coat, wherein the top coat is formed using a resin film generator. It is formed contactlessly.
본 발명에서는 추가적으로, 2 이상의 색상을 갖는 컬러 강판을 제조할 수 있다. 이를 도 4를 참고하여 설명하면, 상기 수지막 생성기(480)의 내부에 내부 격벽(485)을 설치하여 상도 피막을 형성하기 위한 도료가 2 이상이 수용될 수 있도록 한다. In the present invention, it is possible to manufacture a color steel sheet having two or more colors. Referring to FIG. 4, two or more paints for forming a top coat may be accommodated by installing an inner partition 485 inside the resin film generator 480.
이에 따라, 서로 다른 색상을 갖는 2 이상의 도료를 하나의 수지막 생성기(480)에 넣고, 상도 피막을 형성하게 되면, 상도 피막이 2 이상의 색상이 동시에 형성될 수 있는 장점이 있다. 이를 통해, 표면이 미려한 다색의 컬러 강판을 제조할 수 있는 장점이 있다.Accordingly, when two or more paints having different colors are put in one resin film generator 480 and a top coat is formed, the top coat has an advantage that two or more colors may be simultaneously formed. Through this, there is an advantage that can produce a multi-colored steel sheet with a beautiful surface.
상기 내부 격벽의 종류나 형태는 제한되지 않으며, 2이상의 도료가 수지막 생성기 내부에서 분리될 수 있으면 충분하며, 노즐(483)을 통해 동시에 피막을 형성할 때, 서로 다른 도료의 혼합이 이루어지지 않을 정도의 간격을 유지할 수 있는 것이 바람직하다.The type or shape of the inner partition is not limited, and it is sufficient that two or more paints can be separated inside the resin film generator, and when the films are formed simultaneously through the nozzles 483, different paints may not be mixed. It is desirable to be able to maintain the interval.
(부호의 설명)(Explanation of the sign)
110, 210, 310, 410.....소지강판 311.....화성처리층110, 210, 310, 410 ..... steel plate 311 ..... chemically treated layer
120, 220, 320.....하도 피막 형성 롤120, 220, 320 ..... undercoat roll forming
321.....하도 피막 픽업롤 322.....하도 피막 전사롤321 ..... undercoat pick-up roll 322 .... undercoat transfer roll
323.....하도 피막323 ..... undercoat
130.....하도 피막 베이킹 오븐130 ..... undercoat baking oven
140.....상도 피막 형성 롤140 ..... top coat forming rolls
150, 250.....상도 피막 베이킹 오븐150, 250 ..... topcoat baking oven
160, 260.....크리어 피막 형성 롤160, 260 ..... Cree film forming rolls
170, 270.....크리어 피막 베이킹 오븐170, 270 ..... Cree film baking oven
280, 380, 480.....수지막 생성기280, 380, 480 ..... Resin Generator
381.....도료 주입구 382.....다이 심381 ..... Paint inlet 382 ..... Die Shim
383, 483.....도료 배출구(노즐) 384, 484.....상도 피막383, 483 ..... Paint outlet (nozzle) 384, 484 ..... Top coat
290, 390.....챔버 485.....내부 격벽290, 390 ..... Chamber 485 ..... Inner bulkhead

Claims (14)

  1. 화성처리층이 형성된 소지강판을 준비하는 단계;Preparing a steel sheet having a chemical conversion treatment layer formed thereon;
    상기 소지강판에 하도 피막을 형성하는 단계;Forming a coat on the base steel sheet;
    상기 하도 피막이 형성된 소지강판에 수지막 생성기를 이용하여 비접촉식으로 상도 피막을 형성하는 단계;Forming a top coat on the base steel plate on which the bottom coat is formed by using a resin film generator in a non-contact manner;
    상기 상도 피막이 형성된 소지강판을 베이킹 처리하는 단계; 및Baking the base steel sheet on which the top coat is formed; And
    상기 베이킹 처리 후 크리어 피막을 형성하고, 베이킹 처리하는 단계를 포함하는 컬러 강판의 제조방법.Forming a Cree film after the baking treatment, the method of manufacturing a color steel sheet comprising a baking treatment.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 수지막 생성기는 하도 피막 상부로부터 1mm 이상 이격되어 있는 것을 특징으로 하는 컬러 강판의 제조방법.The resin film generator is a color steel sheet manufacturing method, characterized in that spaced 1mm or more away from the top coat.
  3. 청구항 1에 있어서,The method according to claim 1,
    상기 상도 피막을 형성하는 단계는 2층 이상의 상도 피막을 형성하는 것인 컬러 강판의 제조방법.The forming of the top coat is a method of manufacturing a color steel sheet to form a top coat of two or more layers.
  4. 청구항 3에 있어서, The method according to claim 3,
    상기 2층 이상의 상도 피막을 2 이상의 노즐이 설치된 수지막 생성기를 이용하여 형성하거나, 2 이상의 수지막 생성기를 이용하여 형성하는 컬러강판의 제조방법. A method for manufacturing a color steel sheet wherein the two or more layers of top coat are formed by using a resin film generator provided with two or more nozzles, or by using two or more resin film generators.
  5. 청구항 1에 있어서,The method according to claim 1,
    상기 화성처리층은 Cr계 또는 비Cr계 물질로 형성되며, 화성처리층의 두께는 1.0~4.0㎛인 컬러 강판의 제조방법.The chemical conversion layer is formed of a Cr-based or non-Cr-based material, the thickness of the chemical conversion layer is 1.0 ~ 4.0㎛ manufacturing method of a colored steel sheet.
  6. 청구항 1에 있어서,The method according to claim 1,
    상기 하도 피막을 형성하는 물질은 방청안료가 포함된 폴리에스테르 수지 5.0~20.0중량%가 포함된 도료인 컬러 강판의 제조방법.The material for forming the undercoat is a method for producing a color steel sheet is a paint containing 5.0 to 20.0% by weight of a polyester resin containing an anti-rust pigment.
  7. 청구항 1에 있어서,The method according to claim 1,
    상기 상도 피막을 형성하는 물질은 폴리에스테르, 변성폴리에스테르, 하이폴리머 폴리에스테르, 실리콘, 불소 타입, 아크릴 우레탄 중에서 선택되는 하나 또는 둘 이상의 혼합물인 베이스 도료인 컬러 강판의 제조방법.The material for forming the top coat is a method of manufacturing a color steel sheet is a base paint which is one or a mixture of polyester, modified polyester, high polymer polyester, silicone, fluorine type, acrylic urethane.
  8. 청구항 1에 있어서,The method according to claim 1,
    상기 수지막 생성기는 챔버 내에 설치되고, 상기 챔버의 내부 분위기는 760torr 미만인 컬러 강판의 제조방법.The resin film generator is installed in a chamber, the inner atmosphere of the chamber is less than 760torr manufacturing method of color steel sheet.
  9. 청구항 1에 있어서,The method according to claim 1,
    상기 상도 피막을 형성할 때, 소지강판의 온도는 60~250℃인 컬러 강판의 제조방법.When forming the top coat, the temperature of the steel sheet is 60 ~ 250 ℃ manufacturing method of color steel sheet.
  10. 청구항 1에 있어서,The method according to claim 1,
    상기 상도 피막이 형성된 소지강판을 베이킹 처리하는 단계는 100~400℃의 온도에서 이루어지는 컬러 강판의 제조방법.Baking treatment of the steel sheet formed with the top coat is a manufacturing method of a color steel sheet made at a temperature of 100 ~ 400 ℃.
  11. 청구항 1에 있어서,The method according to claim 1,
    상기 수지막 생성기는 내부에 2 이상의 도료를 수용할 수 있는 내부 격벽을 포함하고, The resin film generator includes an inner partition that can accommodate two or more paints therein,
    상기 2 이상 도료를 이용하여 2 이상의 색상을 갖는 상도 피막을 동시에 형성하는 컬러 강판의 제조방법.The manufacturing method of the color steel plate which simultaneously forms the top coat which has two or more colors using the said 2 or more paint.
  12. 화성처리층을 갖는 소지강판; A steel sheet having a chemical conversion treatment layer;
    상기 소지강판 상에 형성된 하도 피막; 및An undercoat film formed on the base steel sheet; And
    상기 하도 피막 상에 형성된 1층 이상의 상도 피막을 포함하고, One or more top coats formed on the bottom coats,
    상기 상도 피막은 수지막 생성기를 이용하여 비접촉식으로 형성된 컬러 강판.The top coat is a color steel sheet formed in a non-contact manner using a resin film generator.
  13. 청구항 12에 있어서,The method according to claim 12,
    상기 수지막 생성기는 2 이상의 도료를 포함하도록 내부 격벽을 포함하고, 2 이상의 도료를 이용하여 2 이상의 색상을 갖는 상도 피막을 갖는 컬러 강판.The resin film generator includes an inner partition to contain two or more paints, and a color steel sheet having a top coat having two or more colors using two or more paints.
  14. 청구항 12에 있어서,The method according to claim 12,
    상기 컬러 강판은 청구항 1 내지 10 중 어느 하나의 방법에 의해 제조된 것인 컬러 강판.The color steel sheet is manufactured by any one of claims 1 to 10.
PCT/KR2014/005137 2014-06-11 2014-06-11 Color steel plate and method for manufacturing same WO2015190629A1 (en)

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CN111435079A (en) * 2019-01-15 2020-07-21 苏州丰源彩板净化有限公司 Production detection method of color steel plate
CN111923517A (en) * 2020-06-10 2020-11-13 谭金泉 Various steel sheet of type zinc-plated that gives sound insulation and processing equipment thereof

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CN111435079A (en) * 2019-01-15 2020-07-21 苏州丰源彩板净化有限公司 Production detection method of color steel plate
CN111923517A (en) * 2020-06-10 2020-11-13 谭金泉 Various steel sheet of type zinc-plated that gives sound insulation and processing equipment thereof

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