KR20030090565A - Aluminum container coated with multilayer having various colors and manufacturing method thereof - Google Patents

Aluminum container coated with multilayer having various colors and manufacturing method thereof Download PDF

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Publication number
KR20030090565A
KR20030090565A KR1020030078490A KR20030078490A KR20030090565A KR 20030090565 A KR20030090565 A KR 20030090565A KR 1020030078490 A KR1020030078490 A KR 1020030078490A KR 20030078490 A KR20030078490 A KR 20030078490A KR 20030090565 A KR20030090565 A KR 20030090565A
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South Korea
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container
aluminum
coated
coating
shape
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KR1020030078490A
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Korean (ko)
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KR100443559B1 (en
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이명록
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(주)화인아트
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/022—Anodisation on selected surface areas
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/04—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/16—Pretreatment, e.g. desmutting

Abstract

PURPOSE: A manufacturing method of aluminum container coated with multilayer having various colors is provided to manufacture a beautiful and elegant aluminum cooking pot by anodizing the surface of the pot using oxalic acid, sulfuric acid and chromic acid. CONSTITUTION: The method for manufacturing aluminum container(10) comprises first step of press forming an aluminum metal material in a container shape; second step of removing oil and fat on the surface of the container using an appropriate degreasing solution, and performing surface treatment by lightly polishing the oil and fat removed surface of the container and treating the lightly polished surface of the container with phosphoric acid; third step of applying various colored corrosion resistant coating to the outer surface of the surface treated container; fourth step of grinding the bottom surface of the container in a certain concentric circle shape, and grinding the outer surface of the container in a band shape; and fifth step of forming an aluminum anodized layer on the inner surface and bottom surface of the container and the outer surface of the container to which corrosion resistant coating(20) is not applied.

Description

다양한 색상으로 멀티 코팅된 알루미늄재의 용기 및 그 제조방법{omitted}Multi-coated aluminum container and its manufacturing method {omitted}

알루미늄은 원래 대단히 활성(活性)적인 금속으로 공기속에 노출되면 금속표면이 즉시 산화물(자연적 산화피막)로 덮이게 되어 순수한 금속표면이 생기지 않는데, 이 산화물로 인해 알루미늄 표면을 도금하거나 다른 금속으로 코팅하는 것이 어렵다. 또한 자연 산화피막은 피막두께의 한계로 공업적 이용가치가 적으므로, 전기적, 인공적인 방법으로 산화피막을 더욱더 두껍게 해서 두께가 10㎛ 이상이 되는 산화물 등을 만들어 사용한다.Aluminum is originally a very active metal, and when exposed to air, the metal surface is immediately covered with an oxide (natural oxide), which does not form a pure metal surface, which causes the aluminum surface to be plated or coated with another metal. It is difficult. In addition, since the natural oxide film has a low industrial use value due to the limitation of the film thickness, the oxide film is made thicker by electric and artificial methods to make an oxide having a thickness of 10 μm or more.

알루미늄의 방식법에는 여러 가지가 있으나, 가장 많이 쓰이는 방법은 알루미늄의 표면을 적당한 전해액 중에서 양극산화 처리하여 표면에 방식성이 우수하고 치밀한 산화피막이 만들어지도록 하는 것이다. 이 방법에는 수산법, 황산법, 크롬산법 등이 있다.There are many methods of corrosion prevention of aluminum, but the most commonly used method is to anodize the surface of aluminum in a suitable electrolyte so that an excellent corrosion resistance and a dense oxide film are formed on the surface. This method includes a fishery method, a sulfuric acid method, and a chromic acid method.

수산법 : 알루마이트법이며, 알루미늄 제품을 2% 수용액에 넣고, 직류, 교류 또는 직류에 교류를 동시에 보내면 표면은 단단하고 치밀한 산화막을 만든다. 이 방법은 전류 효율이 좋으며, 피막의 두께는 전류의 통전량에 비례한다.Fisheries method: It is anodized method, and when aluminum product is put in 2% aqueous solution and direct current is sent to DC, AC or DC at the same time, the surface is made hard and dense oxide film. This method has good current efficiency, and the thickness of the film is proportional to the amount of current carrying.

황산법 : 15∼20% 황산액을 사용하며, 농도가 낮은 것을 사용할수록 피막이 단단하게 형성된다. 또 연하고 흡착성이 좋은 피막을 얻으려면 전해액의 온도를 30℃ 정도로 유지한다. 일반적으로 가격이 싸므로 널리 이용되고 있다.Sulfuric acid method: 15-20% sulfuric acid solution is used, and the lower the concentration, the harder the film is formed. In addition, the temperature of the electrolyte is maintained at about 30 ° C to obtain a soft and adsorbable coating. In general, it is widely used because of its low price.

크롬산법 : 3%의 산화크롬수용액을 사용하며 전해액의 온도는 40℃ 정도로 유지된다. 전압을 가감하면서 통전시간을 조정하며, 전해액의 교반은 기계적으로 한다. 크롬산 피막은 내마멸성은 작으나 내식성이 대단히 크다.Chromic acid method: Aqueous solution of 3% chromium oxide is used and the temperature of electrolyte is maintained at 40 ℃. Adjusting the energization time while adjusting the voltage, and stirring the electrolyte is mechanical. Chromic acid coatings have low wear resistance but very high corrosion resistance.

본 발명은 다양한 색상으로 표현할 수 있는 조리용 알루미늄 냄비에 관한 것으로서, 보다 상세하게는 조리용 냄비의 특정 부분에 원하는 색상의 내열성과 내식성, 내구성이 뛰어난 도료로 도장한 후, 조리용 알루미늄 냄비의 내 외측의 표면이 자연산화로 인한 불규칙한 금속표면이 생기는 것을 방지하기 위하여 옥살산, 황산, 크롬산 등으로 알루미늄 양극산화 피막법으로 표면 처리하여 다양한 색상의 표현으로 단조롭고 무미건조한 조리용 냄비를 미려하고 우아한 조리용 알루미늄 냄비를 제공함에 있다.The present invention relates to a cooking aluminum pot that can be expressed in a variety of colors, and more particularly, after coating a specific portion of the cooking pot with a heat-resistant, corrosion-resistant, durable paint of the desired color, In order to prevent irregular metal surface from occurring due to natural oxidation, the surface is treated with aluminum anodizing film with oxalic acid, sulfuric acid, and chromic acid to express monochromatic and tasteless cooking pots in various colors. In providing an aluminum pot.

도 1은 본 발명에 의한 조리용 알루미늄 냄비의 전체 공정도1 is an overall process diagram of the cooking aluminum pot according to the present invention

도 2은 본 발명에 의한 조리용 알루미늄 냄비의 전체 사시도.Figure 2 is an overall perspective view of a cooking aluminum pot according to the present invention.

도 3은 본 발명에 의한 조리용 알루미늄 냄비의 단면도.Figure 3 is a cross-sectional view of the cooking aluminum pan according to the present invention.

＜도면의 주요부분에 대한 부호의 설명＞<Description of the code | symbol about the principal part of drawing>

10 : 알루미늄재 용기 20 : 내식성 코팅층10 aluminum container 20 corrosion resistant coating layer

30 : 산화코팅층 40 : 띠 모양 연삭부30: oxide coating layer 40: strip-shaped grinding portion

본 발명은 알루미늄 금속재의 용기를 다양한 색상으로 코팅하는 방법에 있어서, 알루미늄 금속소재를 용기형상으로 프레스 가공하는 1 단계와; 용기의 표면의 유지를 적당한 탈지용액으로 제거하고 가벼운 연마작업 및 인산처리를 하는 표면처리의 2 단계와; 표면처리된 용기의 외부표면에 다양한 색상으로 내식성 코팅을 하는 3 단계와; 용기의 밑면을 일정한 동심원의 모양으로 연삭하고 용기의 외부표면에 띠 모양으로 연삭하는 4 단계와; 용기의 내부표면 및 바닥표면과 내식성 코팅이 되지않은 외부표면에 알루미늄 양극산화 코팅층을 형성하는 5 단계를 포함한 것을 특징으로 하는 금속재의 용기를 다양한 색상으로 멀티 코팅하는 방법이다.The present invention provides a method for coating a container of aluminum metal in various colors, the method comprising the steps of pressing the aluminum metal material into a container shape; Two stages of surface treatment to remove the surface of the container with a suitable degreasing solution and perform light polishing and phosphorication; Three steps of coating the outer surface of the surface-treated container with various colors; Grinding the bottom of the container into a shape of a concentric circle and grinding the outer surface of the container into a band shape; It is a method of multi-coating a metal container in various colors, including five steps of forming an aluminum anodized coating layer on the inner surface and the bottom surface of the container and the outer surface which is not coated with a corrosion resistant coating.

상기 내식성 코팅의 3 단계에서는 내열성과 내식성이 뛰어난 착색도료 중의 하나인 에나멜 내열도료를 200∼260℃ 사이의 온도에서 도장하는 것을 특징으로 하는 금속재의 용기를 멀티 코팅하는 방법이다. 또한 연삭하는 4 단계에서는 도장부분과 그렇지 않은 부분의 경계를 지어주고, 색상이 겹쳐진 부분을 지울 수 있도록 용기의 옆면을 띠 모양으로 연삭하는 방법을 포함한 것을 특징으로 하는 금속재의 용기를 멀티 코팅하는 방법이다.In the third step of the corrosion-resistant coating is a method of multi-coating a metal container, characterized in that the coating of the enamel heat-resistant coating, which is one of the excellent heat-resistant and corrosion-resistant coating at a temperature between 200 ~ 260 ℃. In addition, in the four step of grinding, forming a boundary between the painted portion and the non-painted portion, and multi-coating the metal container, including a method of grinding the sides of the container in a band shape so as to erase the overlapped portion of the color. to be.

특히, 용기의 내부표면 및 바닥표면과 내식성 코팅이 되지않은 외부표면에 산화코팅층을 형성하는 5 단계는 소정 두께의 박막이 형성되도록 용기를 황산, 인산, 옥살산 등의 하나에 일정시간 침지시켜 알루미늄 양극산화 피막층을 형성시키는 것을 특징으로 하는 금속재의 용기를 멀티 코팅하는 방법이다.In particular, the step 5 of forming an oxide coating layer on the inner surface and the bottom surface of the container and the outer surface which is not coated with a corrosion resistant coating is performed by immersing the container in one of sulfuric acid, phosphoric acid and oxalic acid for a predetermined time so that a thin film having a predetermined thickness is formed. It is a method of multi-coating the metal container which forms an oxide film layer.

한편 본 발명은 알루미늄 금속재의 용기를 다양한 색상으로 코딩하는 방법에있어서, 용기형상으로 프레스 가공된 알루미늄 금속소재의 표면을 계면활성제 등의 공지된 알루미늄용 탈지용액으로 용기 표면에 묻어있는 지방과 같은 이물질을 제거하고 가벼운 연마작업 및 인산처리를 하여 표면에 광택이 발생되게 하고, 용기의 외부표면은 내열성과 내식성이 뛰어난 착색도료 중의 하나인 에나멜 내열도료를 200∼260℃ 사이의 온도에서 도장하여 내식성 코팅이 되고, 내식성 코팅된 부분중 용기의 외부표면의 일부분을 띠 모양으로 연삭되고 용기의 밑면은 동심원의 모양으로 연삭되고, 용기의 내부면은 알루미늄 양극산화 코팅층이 형성된 것을 특징으로 하는 멀티 코팅된 금속재의 용기에 관한 것이다On the other hand, the present invention is a method for encoding a container of aluminum metal in various colors, the foreign material such as fat on the surface of the aluminum metal material pressed in the shape of the container on the surface of the container with a known degreasing solution for aluminum, such as surfactants The surface of the container is coated with an enamel heat-resistant paint at a temperature between 200 and 260 ° C to remove gloss on the surface by light polishing and phosphorication treatment. A portion of the outer surface of the container is ground in a strip shape, the bottom of the container is ground in a concentric shape, and the inner surface of the container is formed of an aluminum anodizing coating layer. Is about the courage of

이하 본 발명을 첨부도면에 의하여 상세히 설명하면 아래와 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 의한 조리용 알루미늄 냄비의 전체 공정도이다. 도 2는 본 발명에 의한 조리용 알루미늄 냄비의 전체 사시도이다. 도 3은 본 발명에 의한 조리용 알루미늄 냄비의 단면도이다.1 is an overall process diagram of an aluminum cooking pot according to the present invention. 2 is an overall perspective view of an aluminum cooking pot according to the present invention. 3 is a cross-sectional view of the cooking aluminum pan according to the present invention.

이와 같은 본 발명의 목적을 달성하기 위한 조리용 알루미늄 냄비는 크게 용기, 손잡이와 뚜껑으로 나누어지고, 이것의 제작방법은 다음과 같다.The aluminum cooking pot for achieving the object of the present invention is largely divided into a container, a handle and a lid, the production method thereof is as follows.

용기는 알루미늄 판재를 특정 용기의 형상으로 프레스로 성형 가공하여 만들어진다. 용기의 외면에 색상을 연출하기 위하여 표면의 유지를 적당한 용액으로 제거하고 가벼운 연마작업 및 인산처리를 하고, 용기의 외면에 연출하고자 하는 색상으로 내열성과 내식성이 뛰어난 착색도료를 200∼260℃ 사이의 온도에서 도장한다. 이때의 도료는 에나멜 내열도료가 사용된다. 이상의 색상이 연출된 용기는 조리 시 열이 일정하게 전달되고, 열에 의한 형상의 변형을 방지하기 위하여 용기의 밑면을일정한 동심원의 모양으로 연삭한다.The container is made by molding an aluminum sheet into a press in the shape of a specific container. To produce color on the outer surface of the container, remove the oil from the surface with a suitable solution, perform light polishing and phosphoric acid treatment, and color paint with excellent heat and corrosion resistance. Paint at temperature. At this time, the enamel heat-resistant paint is used. In the above-described container, the heat is uniformly transferred during cooking, and the bottom of the container is ground in a uniform concentric shape to prevent deformation of the shape due to heat.

도장부분과 그렇지 않은 부분의 경계를 지어주고, 색상이 겹쳐진 부분을 지울 수 있도록 용기의 옆면을 띠 모양으로 연삭한다. 용기의 옆면을 띠 모양으로 연삭함으로 외관상 아름다우면서 고급스러운 미적 감각을 낼 수 있다.Border the painted and unpainted areas and grind the sides of the container in a strip to remove the overlapped areas. Grinding the sides of the container in a strip shape creates a beautiful and luxurious aesthetic appearance.

마지막으로 건조 후 손잡이를 붙이게 된다.Finally, after drying, the handle is attached.

이상의 제작공정으로 특정 부위에 색상을 가진 조리용 알루미늄 냄비는 완성된다.With the above manufacturing process, a cooking aluminum pot with a color on a specific part is completed.

용기에 양극산화 피막을 형성시키는 방법에 있어서 여러 조건이 있지만, 본 발명의 실시 예는 다음과 같다.Although there are various conditions in the method for forming the anodized film in the container, embodiments of the present invention are as follows.

용기를 0℃의 온도에서 17∼20% 정도의 황산용액이 담긴 수조에 80V의 전압을 인가하여 45∼50분 동안 담그면 용기의 내부표면 및 바닥표면과 내식성 코팅이 되지않은 외부표면에 검정색의 산화피막이 형성된다. 또 용기를 16℃의 온도에서 17∼20% 정도의 황산용액이 담긴 수조에 20V의 전압을 인가하여 45분 동안 담그면 내부표면 및 바닥표면과 내식성 코팅이 되지않은 외부표면에 황금색의 산화피막이 형성된다.When the container is immersed for 45 to 50 minutes by applying a voltage of 80V to a water bath containing 17-20% sulfuric acid solution at a temperature of 0 ° C, black oxidation is performed on the inner surface and bottom surface of the container and the outer surface which is not coated with a corrosion resistant coating. A film is formed. When the vessel is immersed in a tank containing 17-20% sulfuric acid solution at a temperature of 16 ℃ for 20 minutes with a voltage of 20V, a golden oxide film is formed on the inner surface, the bottom surface and the outer surface which is not coated with a corrosion resistant coating. .

이상의 제작공정으로 다양한 색상으로 코딩된 조리용 알루미늄 냄비는 완성된다.In the above manufacturing process, a cooking aluminum pot coded in various colors is completed.

이상의 색상이 연출된 용기는 밑면에 동심원 연삭을 함으로써 조리 시 열이 일정하게 전달되고 열에 의한 형상의 변형을 방지한다. 또한 용기의 옆면을 선모양으로 연삭함으로써 외관상 아름다우면서 고급스러운 미적 감각을 낼 수 있다.The container with the above color is concentrically ground on the bottom, so that heat is uniformly transmitted during cooking and prevents deformation of the shape due to heat. In addition, by grinding the sides of the container in the shape of a line, it is beautiful in appearance and exquisite aesthetic sense.

특히 제품외관 등의 특정부위에 다양한 색상을 가진 조리용 알루미늄 냄비는 완성된다.In particular, cooking aluminum pots with various colors on specific parts, such as product appearance, are completed.

Claims (5)

알루미늄 금속재의 용기(10)를 다양한 색상으로 코팅하는 방법에 있어서, 알루미늄 금속소재를 용기형상으로 프레스 가공하는 1 단계와; 용기의 표면의 유지를 적당한 탈지용액으로 제거하고 가벼운 연마작업 및 인산처리를 하는 표면처리의 2 단계와; 표면 처리된 용기의 외부표면에 다양한 색상으로 내식성 코팅(20)을 하는 3 단계와; 용기의 밑면을 일정한 동심원의 모양으로 연삭하고 용기의 외부표면에 띠 모양으로 연삭하는 4 단계와; 용기의 내부표면 및 바닥표면과 내식성 코팅이 되지않은 외부표면에 알루미늄 양극산화 코팅층(30)을 형성하는 5 단계를 포함한 것을 특징으로 하는 다양한 색상으로 멀티 코팅된 알루미늄재의 용기제조방법A method of coating a container 10 of aluminum metal in various colors, the method comprising: pressing the aluminum metal material into a container shape; Two stages of surface treatment to remove the surface of the container with a suitable degreasing solution and perform light polishing and phosphorication; Three steps of coating the outer surface of the surface-treated container with corrosion resistant coatings in various colors; Grinding the bottom of the container into a shape of a concentric circle and grinding the outer surface of the container into a band shape; Method for producing a container of a multi-coated aluminum material in a variety of colors, including the five steps of forming an aluminum anodized coating layer 30 on the inner surface and bottom surface of the container and the outer surface is not corrosion-resistant coating 제 1항에 있어서, 상기 내식성 코팅(20)의 3 단계에서는 내열성과 내식성이 뛰어난 착색도료를 200∼260℃ 사이의 온도에서 에나멜 내열도료를 사용하는 것을 특징으로 하는 다양한 색상으로 멀티 코팅된 알루미늄재의 용기제조방법According to claim 1, wherein the three steps of the corrosion-resistant coating (20) of the aluminum coating is multi-coated in a variety of colors, characterized in that the use of the enamel heat-resistant paint at a temperature between 200 ~ 260 ℃ excellent coloring and corrosion resistance Container manufacturing method 제 1항에 있어서, 연삭하는 4 단계에서는 도장부분과 그렇지 않은 부분의 경계를 지어주고, 색상이 겹쳐진 부분을 지울 수 있도록 용기의 옆면을 띠 모양(40)으로 연삭하는 방법을 포함한 것을 특징으로 하는 다양한 색상으로 멀티 코팅된 알루미늄재의 용기제조방법The method according to claim 1, wherein the fourth step of grinding includes forming a boundary between the painted portion and the non-painted portion and grinding the side surface of the container into a strip 40 so as to erase the overlapped portion. Manufacturing method of aluminum coating multi-coated in various colors 제 1항에 있어서, 용기의 내부표면 및 바닥 표면과 내식성 코팅이 되지않은 외부표면에 산화코팅층(30)을 형성하는 5 단계는 소정 두께의 박막이 형성되도록 용기를 황산, 인산, 옥살산 등의 하나에 일정시간 침지시켜 알루미늄 양극산화피막을 형성시키는 것을 특징으로 하는 다양한 색상으로 멀티 코팅된 알루미늄재의 용기제조방법The method of claim 1, wherein the step 5 of forming the oxide coating layer 30 on the inner surface and the bottom surface of the container and the outer surface which is not coated with a corrosion resistant coating is performed such that sulfuric acid, phosphoric acid, oxalic acid, or the like is formed so that a thin film having a predetermined thickness is formed. Method for producing a container of multi-coated aluminum material in a variety of colors, characterized in that to form an anodized film by immersing in a predetermined time 알루미늄 금속재의 코팅된 용기에 있어서, 용기형상으로 프레스 가공된 알루미늄 금속소재의 표면은 적당한 탈지용액에 의하여 유지가 제거되고 가벼운 연마작업 및 인산처리가 되며, 용기의 외부표면은 다양한 색상으로 내식성 코팅이 되고 내식성 코팅(20)된 부분중 용기의 밑면은 동심원의 모양으로 연삭되고, 용기의 내부표면은 알루미늄 양극산화 코팅층(30)이 형성된 것을 특징으로 하는 다양한 색상으로 멀티 코팅된 알루미늄재의 용기In the coated aluminum metal container, the surface of the aluminum metal material pressed into the shape of the container is degreased by a suitable degreasing solution, lightly polished and phosphated, and the outer surface of the container is coated in various colors with a corrosion resistant coating. And the bottom surface of the container of the corrosion-resistant coating 20 is ground in a concentric shape, the inner surface of the container is a multi-coated aluminum material container characterized in that the aluminum anodized coating layer 30 is formed
KR10-2003-0078490A 2003-11-03 2003-11-03 Multi-coated aluminum container and its manufacturing method KR100443559B1 (en)

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KR101028419B1 (en) * 2008-08-14 2011-04-13 주식회사 이룸쿡 Manufacturing method for aluminum cookware
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