KR101922802B1 - Manufacturing method of cooking vessel - Google Patents

Abstract

The present invention can reduce the contact area between the food and the bottom surface of the cooking vessel by forming depressions on the bottom surface of the cooking vessel to prevent the food from pressing on the bottom surface of the cooking vessel, The present invention also provides a method of manufacturing a cooking vessel that can effectively prevent peeling of a coating layer while preventing sticking of the coating layer.

Description

{Manufacturing method of cooking vessel}

The present invention relates to a method of manufacturing a cooking vessel, and more particularly, to a method of manufacturing a cooking vessel by forming a dimpled portion on a bottom surface of a cooking vessel to reduce a contact area between the food and a bottom surface of the cooking vessel, And more particularly, to a method of manufacturing a cooking container which can effectively prevent peeling of a coating layer while preventing press-adhesion of food through two coating processes.

Generally, various cooking vessels are used in each home for the purpose of cooking food. Such pots, frying pans, and the like corresponding to such cooking vessels may not be able to obtain a clean cooking state due to food sticking to the surface during cooking, or may cause chemical reactions to occur due to the chemical characteristics of various condiments added during cooking, In order to prevent such a situation, a product in which a film is laminated on the inner surface of the cooking utensil so as to realize a non-stick function (that is, to prevent the food from being pressed on the surface of the container) Are widely used.

Representative Korean Utility Model No. 1937 (Application No. 91-16005) describes the contents of the surface coating treatment technique of the cooking vessel. According to the technology disclosed in the above publication, a pot, a pan, a frying pan, or the like corresponding to a cooking utensil is made of an aluminum material or an aluminum alloy material, and a ceramic layer and a Teflon layer are sequentially formed on the inner surface portion corresponding to the cooking surface To improve separation and corrosion resistance to food and to maintain a good bonding state of the Teflon layer.

The above-described conventional cooking container is produced by simply laminating a ceramic layer or a Teflon layer on the inner surface of a base material, so that when the ceramic layer or the Teflon layer reaches a temperature at which the ceramic layer or Teflon layer can not withstand an external shock or cooking, A phenomenon of being damaged is caused.

That is, a portion of the ceramic layer or the Teflon layer, which is damaged, may lose the non-stick effect, and the damaged layer may be harmful to the human body by mixing with the food.

On the other hand, a prior art for solving the above-mentioned problems is an example of Korean Patent Registration No. 10-0804387 (hereinafter referred to as prior art).

The prior art includes the steps of attaching a plurality of apertured films to a cut stainless steel plate, applying ink to the film adhered on the stainless steel plate, passing the ink through the holes of the film, And then removing the film to form an ink layer having the same pattern as the hole on the surface of the stainless steel plate; and dipping the stainless steel plate having the ink layer formed thereon in a corrosive solution to remove the surface of the stainless steel plate Forming a concave-convex concave-convex portion and a concave portion; removing the ink layer from the stainless plate; pressing the stainless plate to form a concave-convex concave portion and a concave- A step of forming a container, a step of applying a coating liquid to the bottom surface of the cooking container Forming a coating layer having a predetermined thickness on the engraved portion and the embossed portion, and removing the coating layer formed on the embossed portion of the cooking container to form a limited coating layer only on the engraved portion.

However, in the above prior art, it is necessary to perform a process of forming a depressed portion and an embossed portion in a stainless steel plate through a corrosion process, and then removing the ink layer through a polishing process, and a process of removing the already- It is difficult to reduce the workability, and it is possible to damage the surface of the cooking vessel by scratches or the like, thereby reducing the value of the product.

Document 1: Korean Utility Model Publication No. 1937 Document 2: Korean Patent Registration No. 10-0804387

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a cooking apparatus and a cooking apparatus, which are capable of reducing the contact area between a food and a bottom surface of a cooking vessel, In particular, the present invention provides a method of manufacturing a cooking vessel which can effectively prevent peeling of a coating layer while preventing press-adhesion of food through two coating processes.

According to another aspect of the present invention, there is provided a method of manufacturing a cooking vessel, including the steps of: attaching a film having a plurality of holes on a cut stainless steel plate; A second step of impregnating the ink with the hole of the film, a third step of peeling off the film from the stainless steel plate impregnated with the ink and forming an ink layer having the same pattern as the hole on the surface of the stainless steel plate, A fourth step of applying a corrosive liquid to a stainless steel plate having a layer formed thereon to corrode the surface of the stainless steel plate except for the ink layer to form concave and convex portions and relief portions on the surface of the stainless steel plate, A fifth step of washing the surface of the plate with a chelating agent to remove the ink layer, Coating a coating liquid on the surface of the stainless steel plate to form a first coating layer on a relief portion and a relief portion formed on a surface of the stainless steel plate, removing the first coating layer formed on the relief portion of the stainless steel plate, A seventh step of forming the first coating layer in a limited manner, an eighth step of applying the coating liquid again to the stainless steel sheet from which the first coating layer of the embossed portion is removed to form a second coating layer on the embossed portion and the engraved portion, And a ninth step of pressing the stainless steel plate having the second coating layer formed on the engraved portion thereof to form the cooking vessel.

The present invention can reduce the contact area between the food and the bottom surface of the cooking vessel by forming depressions on the bottom surface of the cooking vessel to prevent the food from pressing on the bottom surface of the cooking vessel, It is possible to effectively prevent peeling of the coating layer.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a three-dimensional view showing a configuration of a cooking vessel according to the present invention; Fig.
2 is a cross-sectional view of Fig. 1; Fig.
3 is a view showing a manufacturing process of a cooking container according to the present invention.
4A and 4B are enlarged views of the second coating layer.

Hereinafter, a method of manufacturing a cooking vessel according to the present invention will be described with reference to one embodiment. However, the embodiments described below describe the best mode for carrying out the features and technical ideas of the present invention However, the present invention is not limited by the following examples.

{Example 1}

FIG. 1 is a three-dimensional view of the configuration of a cooking vessel according to the present invention, FIG. 2 is an enlarged view of a main part of FIG. 1, and FIG. 3 is a sectional view of FIG.

As shown in FIGS. 1 to 3, the cooking utensil 100 is formed in a circular shape and has an upper opening portion and a receiving portion capable of containing food therein.

The cooking vessel 100 is cut into various shapes such as a circular or square shape, and then the stainless steel plate 10 is press-worked in a metal mold so that the upper end is opened and the side walls and the bottom are formed.

An aluminum plate 18 and a stainless plate 19 having the same shape as that of the bottom surface are sequentially joined to the outside of the bottom surface of the cooking vessel 10. The aluminum plate 18 has low durability but has high heat conductivity, so that the heat applied by the stainless plate 19 can be quickly and uniformly conducted to the bottom surface of the cooking vessel 10. The thermal conductivity of the stainless steel plate 19 is weaker than that of the aluminum plate 18. However, the stainless steel plate 19 has high durability and reinforces the strength of the aluminum plate 18. [

On the surface of the stainless steel plate 10 forming the bottom of the cooking vessel, the embossed portion 60 and the engraved portion 70 are formed in a predetermined pattern.

The engraved portion 70 minimizes the contact area of the food during the cooking process and prevents the food from being pressed on the stainless steel plate 10 of the cooking container by the oil contained in the engraved portion 70 during the cooking process .

That is, before the food is cooked, the oil is first poured into the bottom of the cooking vessel 100, and then the cooking vessel 10 is heated. Then, the heated oil passes through the engraved portion 70 formed on the stainless steel plate 14 of the cooking vessel, When the food is continuously heated in a state where the food is placed in the cooking container, the oil contained in the engraved portion 70 is boiled and bubbles are generated. At this time, the food is finely heard at the bottom surface of the cooking container 100 by the bubbles, so that the food can be prevented from pressing on the bottom surface of the cooking container 100 during the cooking process.

A first coating layer 80b of a predetermined thickness is formed on the engraved portion 12. The first coating layer 80b prevents the food from being pressed on the bottom surface of the cooking container 100 during the cooking process. The first coating layer 80b may be formed to have a thickness smaller than the depth of the engraved portion 70 so that the first coating layer 80b is not exposed to the outside of the engraved portion 70.

In the meantime, the present invention forms a limited coating layer only on the engraved portion 70. This is because in the process of scratching the bottom surface of the cooking container with a cooking device (not shown) So that the coating layer 80b is prevented from being peeled off by the cooking utensil so that direct contact between the coating layer 80b is not caused.

That is, the coating layer formed on the bottom surface of the conventional cooking vessel 100 has a disadvantage in that the coating layer is easily peeled off during use due to the direct friction with the cooking appliance, and in particular, the peeling coating layer is harmful to the human body The problem will be brought.

However, according to the present invention, the first coating layer 80b having a predetermined thickness is formed only on the engraved portion 70 formed on the bottom surface of the cooking vessel 100, so that the cooking utensil comes into contact with only the embossed portion 70, Since the cooked portion does not touch the engraved portion 70, it is possible to prevent the cooker from coming into contact with the first coating layer 80b, and thus the coating ability can be semi-permanently maintained and the coating layer is not peeled off There is no possibility that the coating layer is mixed with the food, so that the cooking container can be stably used.

On the other hand, another second coating layer (90a, 90b) is further formed on the bottom surface of the cooking vessel of the present invention.

The second coating layers 90a and 90b are provided for the purpose of preventing food from partially sticking to the embossed portions 60 having no coating layer in the process of cooking food, and thus, some consumers do not feel inconvenience. As the second coating layers 90a and 90b, it is preferable to select either fluorine resin or ceramic.

Hereinafter, a method of manufacturing a cooking vessel of the present invention will be described in detail with reference to FIG. 3 attached hereto.

FIG. 3 is a view showing a process of manufacturing a cooking container according to the present invention.

[First step (S1)]

First, the stainless steel plate 10 serving as the material of the cooking vessel 100 is cut into a circular shape, and then the film 30 having the hole 30a formed thereon is attached to the cut stainless steel plate 10. At this time, the holes 30a formed in the film 30 are formed in a shape corresponding to the embossed portions 60 to be formed on the bottom surface of the cooking container 100. Also, the film 30 used in the present invention preferably uses silk fabric.

[Second Step (S2)]

Next, the ink 40 is applied to the film 30 adhered on the stainless steel plate 10 to impregnate the ink 40 into the hole 30a of the film 30. At this time, as the ink application method, it is preferable that the ink 40 is applied to the painting roller using a painting roller, and then the ink 30 is painted directly on the painting roller.

[Third Step (S3)]

The ink 30 impregnated into the hole 30a of the film 30 is dried for a predetermined time and then the film 30 is peeled off from the stainless plate 10 and the surface of the stainless plate 10 The ink layer 40 having the same pattern as that of the hole 30a is formed.

[Fourth Step S4]

Next, a corrosive liquid is sprayed onto the stainless steel plate 10 on which the ink layer 40 is formed by spraying the surface of the stainless steel plate 10 to form the engraved portions 70 and the embossed portions 60. That is, when the corrosive liquid is sprayed onto the surface of the stainless steel plate 10, the bush liquid 50 does not react with the surface of the stainless steel plate 10 on which the ink layer 40 is formed, and the ink layer 40 is formed The surface of the stainless steel plate 10 is exposed to only the surface of the stainless steel plate 10 which is not corroded by the ink layer 40 and the engraved portion 60 which is not corroded by the ink layer 40, So that the surface of the stainless steel plate 10 has a concavo-convex shape through the engraved portion 70 and the embossed portion 60. The ferric chloride (FeCl 3) solution is used as the etching solution 50 so that the reaction with the ink layer 40 does not occur.

[Step 5 (S5)]

Thereafter, when the ink layer 40 formed on the stainless plate 10 is removed with a cleaning agent such as a surfactant, the embossed portion 60 and the engraved engraved portion 70 are formed on the surface of the stainless steel plate 10, .

[Step 6 (S6)]

Next, the coating liquid is applied to the surface of the stainless steel plate 10 to form the first coating layers 80a and 80b of a predetermined thickness on the embossed portion 60 and the engraved portion 70. The coating liquid used is most preferably Teflon or ceramic.

[Step 7 (S7)]

The first coating layer 80a applied to the embossed portion 60 is removed from the surface of the stainless steel plate 10 and the first coating layer 80a of the embossed portion 60 is peeled off Prevent the risk of mixing with food. As a method for removing the coating layer 80a formed on the embossed portion 60, a mechanical working method such as polishing or grinding is preferably used.

[Step 8 (S8)]

After the first coating layer 80a is removed from the embossed portion 80 through the previous step, the coating solution is applied again to the surface of the stainless steel plate 10 to remove the intaglio The second coating layers 90a and 90b having a predetermined thickness are formed on the embossed portion 60 as well as the first and second portions 70 and 70. [

That is, when a coating layer is formed only on the engraved portion 70 except for the embossed portion 60, there is no possibility that the coating layer is peeled off from the cooking appliance and mixed with the food, while the embossed portion 60, Food may be partially adhered to, and some consumers may feel uncomfortable with it.

Thus, the stainless steel plate 10 from which the first coating layer 80a of the embossed portion 60 has been removed is further subjected to a coating process again to form a second coating layer 90a on the embossed portion 60 And then the forming process may be completed in the cooking container 100 through the forming step. When the second coating layer 90a is formed on the embossed portion 14, the first and second coating layers 80b and 90b are formed on the engraved portion 70 of the surface of the stainless steel plate 10, A second coating layer 90a is formed.

The second coating layers 90a and 90b may be formed of a fluororesin coating or a ceramic coating.

The fluororesin coating is composed of three layers as shown in FIG. 4A. The primer layer 92, the color and non-slip effect layer 94, and the primer layer 92 and the mid layer 94 and a top layer 96 having transparency.

That is, the primer solution is sprayed onto the surface of the stainless steel plate by a spraying method, and then dried for about 15 to 30 minutes in an 430 ° C drying furnace to form a primer layer 92, The primer layer 92 and the mid layer 94 are formed by drying the coating liquid for forming the mid layer 94 and then dried in the drying furnace at 430 캜 for about 15 minutes to 30 minutes to form the mid layer 94. Finally, 96 was sprayed onto the intermediate layer 94 and then dried in a drying furnace at 430 ° C for about 15 minutes to 30 minutes to form a primer layer 92, a mid layer 94 and a top layer 96 The second coating layers 90a and 90b formed on the embossed portion 60 and the engraved portion 70 of the stainless steel plate 10 are formed.

The ceramic coating is composed of two layers as shown in FIG. 4B. The ceramic coating includes a base layer 98 for imparting adhesiveness, color and non-slip effect, and a top layer 99 for protecting the base layer 98 and having transparency.

That is, the coating liquid for forming the base layer 98 is sprayed on the surface of the stainless steel plate 10, and dried in the drying furnace at 430 ° C. for about 15 minutes to 30 minutes to form the base layer 98, The coating solution for forming the top layer 99 is sprayed onto the layer 98 and sprayed on the surface of the stainless steel plate 10 and dried in the drying furnace at 430 DEG C for about 15 to 30 minutes to form the base layer 98, And the top layer 99 are formed on the embossed portion 60 and the engraved portion 70 of the stainless steel plate 10. The second coating layers 90a,

[Step 9 (S9)]

Next, the stainless steel plate 10 provided with the engraved portions 60 formed with the second coating layer 90a and the engraved portions 70 formed with the first and second coating layers 80b and 90b is pressed and press-processed And a cooking vessel 10 having a receiving portion 12 and an upper end opened and having a bottom 14 and a side wall 16 is molded.

10: stainless steel plate 30: film
40: ink layer 60:
70: engraved portions 80a, 80b: first coating layer
90a, 90b: the second coating layer

Claims (1)

A method for manufacturing a cooking container,
A first step (S1) of attaching a film (30) formed with a plurality of holes (30a) on a stainless plate (10) cut in a predetermined form;
A second step (S2) of applying the ink (40) to the film (30) attached on the stainless steel plate (10) and impregnating the ink (40) into the hole (30a) of the film (30);
A third step (S3) of peeling off the film from the stainless steel plate impregnated with the ink and forming an ink layer (40) having the same pattern as the hole (30a) on the surface of the stainless steel plate;
The surface of the stainless steel plate 10 except for the ink layer 40 is corroded by applying a corrosive liquid to the stainless steel plate 10 on which the ink layer 40 is formed to form a concave- 70) and a burying portion (60);
A fifth step (S5) of washing the surface of the stainless steel plate (10) formed with the embossed portion (60) and the engraved portion (70) with a cheek activator to remove the ink layer (40);
The coating liquid is applied to the surface of the stainless steel sheet 10 from which the ink layer 40 is removed so that the first coating layers 80a and 80b are formed on the engraved portion 70 and the embossed portion 60 formed on the surface of the stainless steel plate 10, A sixth step (S6) of forming a plurality of light emitting devices;
A seventh step (S7) of forming a first coating layer (80b) only on the engraved portion (70) by removing the first coating layer (80a) formed on the embossed portion (60) of the stainless steel plate (10);
The primer solution was sprayed on the engraved portion 70 and the embossed portion 60 of the stainless steel plate 10 from which the first coating layer 80a of the embossed portion 60 was removed in a spraying manner, For 15 minutes to form a primer layer 92. The primer layer 92 is then sprayed with a coating liquid and then dried in a 430 ° C drying furnace for 15 minutes to form a primer layer 92 The intermediate layer 94 is formed and then the coating liquid is sprayed onto the mid layer and then dried in a drying furnace at 430 DEG C for 15 minutes to form a top layer so that the engraved portion 70 and the embossed portion 60 An eighth step (S8) of forming second coating layers (90a, 90b) consisting of forehead layer (92), mid layer (94) and top layer (96);
And a ninth step (S9) of forming a cooking vessel (100) by pressing a stainless steel plate (10) having second coating layers (90a, 90b) formed on the embossed portion (60) By weight.

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