KR101894663B1 - Manufacturing method of cooking vessel - Google Patents

Abstract

The present invention provides a cooking container manufacturing method comprising: a step of attaching a film, which comprises an ink hole and a dot hole smaller than the ink hole, onto a stainless plate having a predetermined shape; a step of soaking the ink hole and the dot ink in ink by applying the ink to the film attached to the stainless plate, and then, detaching the film to form an ink layer, having the same pattern as the ink hole, and a dot ink layer, having the same pattern as the dot hole and thinner than the ink hole, on the surface of the stainless plate; a step of corroding the surface of the stainless plate, on which the dot ink layer has been formed, and the other surfaces of the stainless plate, excluding the ink layer, by spraying a corrosion solution to the stainless plate to form an embossed part and an engraved part on the surface of the stainless plate and a dot protruding from the center of the floor surface of the engraved part below the depth of the engraved part; a step of forming a coating layer on the surface of the stainless plate including the embossed and engraved parts and the dot, and then, forming a coating layer limitedly on the dot and the engraved part by removing the coating layer from the embossed part; and a step of forming a container body, including a storage part, having an open upper part, and having a floor and side walls, by pressing the stainless plate. As such, the present invention is capable of increasing workability by eliminating the need for a grinder.

Description

{Manufacturing method of cooking vessel}

More particularly, the present invention relates to a method of manufacturing a cooking vessel, and more particularly, to a method of manufacturing a cooking vessel, which comprises forming a corrugated portion on a bottom surface of a cooking vessel, removing the coating layer, The present invention relates to a method for manufacturing a cooking container,

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 shape and an embossed portion; removing the ink layer from the stainless plate; pressing the stainless plate to form a concave-convex concave / convex portion A step of forming a body, a step of applying a coating liquid to the bottom surface of the container body Forming a coating layer having a predetermined thickness on the engraved portion and the embossed portion, and removing the coating layer formed on the raised portion of the container body 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- The workability is lowered, and the surface of the container body may be damaged such as scratches, which may lower the product value.

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 keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a method of manufacturing a film- And then applying the coating layer to the engraved part only by peeling the film.

Another aspect of the present invention is to provide a method of manufacturing a cooking container in which a coating layer is coated again on the entire bottom surface of a container body after peeling off a film to coat a coating layer to the surface of the embossing portion.

According to another aspect of the present invention, there is provided a method of manufacturing a cooking vessel, the method comprising: a film adhering step of adhering a film having at least one hole formed on a surface of a stainless steel plate; A step of impregnating a hole of the film with a corrosive liquid to form a depressed portion of a shape corresponding to the hole on the surface of the stainless steel plate to form a first coating layer on the depressed portion formed on the stainless steel plate through the corrosion step; A film peeling step of peeling the film attached to the surface of the stainless steel plate after the primary coating step to expose the embossed portion and a stainless steel plate having been subjected to the film peeling step, And a molding step for molding the molded article.

And forming a second coating layer on the relief portion and the relief portion formed on the stainless steel plate after the film peeling step.

The present invention reduces the contact area between the food and the bottom surface of the container body by forming a depressed portion on the bottom surface of the container body to prevent the food and food from being pressed against the bottom surface of the container body. The coating layer is not present at the embossed portion due to the film, so that the coating layer coated on the embossed portion is not required to be removed by the abrasive machine as in the prior art, thereby improving the workability.

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 sectional view of Fig. 1;
FIG. 3 is a view showing a cooking container manufacturing process according to the first embodiment of the present invention. FIG.
4 is a view illustrating a process of manufacturing a cooking container according to a first embodiment of the present invention.

The present invention provides a method of manufacturing a cooking container that can reduce the contact area between the food and the bottom surface of the container body by forming depressions on the bottom surface of the container body to prevent the food and food from being pressed against the bottom surface of the container body.

Particularly, the present invention is characterized in that, when the engraved portion is formed on the bottom surface of the container body, the film is adhered to the surface of the stainless steel plate, and then the etchant is introduced into the hole formed in the film so that the engraved portion is corroded on the surface of the stainless steel plate, It is not necessary to apply an ink layer on the surface of the film to form a negative portion by applying the coating liquid to the plate surface and peeling the film, thereby performing an unnecessary process for applying the ink layer and removing the applied ink layer In particular, since the film is peeled off after coating the coating liquid, the embossed portion is covered with the film so that the coating layer is not present from the beginning, so that it is not necessary to remove the coating layer coated on the embossed portion with a polishing machine Thereby realizing a cooking vessel manufacturing method capable of enhancing workability.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a three-dimensional view showing a configuration of a cooking vessel according to the present invention, and Fig. 2 is a sectional view of Fig.

As shown in FIGS. 1 and 2, the cooking container 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.

On the surface of the stainless steel plate 10 forming the bottom of the cooking vessel, the embossed portion 14 and the engraved portion 12 are recessed in a predetermined pattern.

The engraved portion 12 minimizes the contact area of the food during the cooking process and prevents the food from being pressed onto the stainless steel plate of the cooking container by the oil contained in the engraved portion 12 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 12 formed on the stainless steel plate 14 of the cooking vessel, If the food is continuously heated in a state where the food is placed in the cooking container, the oil contained in the engraved portion 12 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.

The first coating layer 30 is formed to a predetermined thickness on the engraved portion 12 except for the relief portion 14. The first coating layer 30 prevents the food from being pressed on the bottom surface of the cooking container 100 during the cooking process. At this time, the coating layer 430 may be formed to have a thickness smaller than the depth of the engraved portion 12 so that the coating layer 30 is not exposed to the outside of the engraved portion 20.

The reason why the coating layer is formed only on the intaglio part 12 as described above is that during the course of scratching the bottom surface of the cooking container with a cooking device such as a spinneret during the cooking process, So that the coating layer 80b is prevented from being peeled off by the cooking utensil so that direct contact does not occur.

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 30 having a predetermined thickness is formed only on the engraved portion 12 formed on the bottom surface of the cooking container 100, so that the cooking device is brought into contact with only the embossed portion 14, Since the cooked portion does not touch the engraved portion 12, it is possible to prevent the cooking device from being in contact with the first coating layer 30, and thus the coating ability can be semi-permanently maintained, There is no possibility that the coating layer is mixed with the food, so that the cooking container can be stably used.

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

{Example 1}

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

As shown in FIG. 3, the cooking vessel of the present invention comprises a film attaching step, a corrosion step, a first coating layer applying step, a film peeling step, a second coating layer applying step and a drawing step.

Film attaching step

The stainless steel plate 10 serving as the material of the cooking vessel 100 is cut into a desired shape and then the film 20 having the hole 22 formed thereon is attached to the cut stainless steel plate 10. At this time, the hole 22 formed in the film 20 has a shape corresponding to the engraved portion 12 to be formed on the stainless steel plate 10. The material of the film 20 is preferably a silk fabric.

Corrosion stage

The corrosion liquid is sprayed on the surface of the stainless steel plate 10 to which the film 20 is attached through the previous steps so that the hole 22 formed in the film 20 is impregnated with the corrosive liquid. That is, when the corrosive liquid is injected into the stainless steel plate 10, the corrosive liquid is impregnated into the holes 22 formed in the film 20, and the stainless steel plate 10 exposed in the film 20 through the holes 20, So that the engraved portion 12 is recessed due to corrosion on the surface of the stainless steel plate 10.

At this time, the surface of the stainless steel plate 10 covered with the film 20 is exposed to the embossed portion 14 (FIG. 14) which is protruded from the surface of the stainless steel plate 10 relative to the engraved portion 12, ). It is preferable to use a ferric chloride (FeCl3) solution as the corrosion solution used in the corrosion step.

Primary coating step

After the corrugated portion 12 is formed on the surface of the stainless steel plate 10 through the corrosion step of the previous step, the coating liquid is applied to the surface of the stainless steel plate 10 to form a first coating layer (30).

The first coating layer 30 is also formed on the film 20 attached to the surface of the stainless steel plate 10 in the process of forming the first coating layer 30 on the engraved portion 30. As the material of the coating liquid used in the first coating step, it is preferable to use Teflon or ceramic well known as fluororesin.

Film peeling step

After the first coating layer 30 is formed on the engraved portion 12 through the first coating step as the previous step, the film 20 is peeled from the stainless steel plate 10 to expose the embossed portion 14. [

That is, the reason why the film 20 attached to the stainless steel plate 10 is removed after the first coating step is that the coating liquid is not applied to the surface of the embossed portion 14 covered with the film 20 It is not necessary to carry out the process of removing the coating layer applied to the surface of the embossing portion 14 by a separate polishing means as in the conventional art by peeling off the film 20 from the stainless steel plate 10, It is possible to prevent the coating layer from being formed on the surface of the substrate, thereby eliminating unnecessary polishing removal processes.

When the coating layer is formed on the surface of the burying part 14, the coating layer may be peeled off the food while the cooking device hits the burying part 14 in the cooking process. Therefore, it is most important to form a coating layer only on the engraved portion without forming a coating layer on the embossed portion. In the present invention, after the first coating step, the film is peeled and a separate polishing process is not performed It is possible to prevent the coating layer from being formed on the surface of the embossed portion 14. [

Molding step

The embossed portion 14 and the engraved portion 12 formed on the outer circumferential surface of the stainless steel plate 10 on which the second coating layer 40 is formed are cut with a mechanical polishing tool so that the surface of the stainless steel plate 10 And then the stainless steel plate 10 is pressed by a press to complete the cooking vessel 100 having an open top and a bottom and side walls. The reason for performing the step of peeling the polishing tool out of the upper surface of the stainless steel plate 10 is that the side wall of the cooking vessel 100 is formed during the pressing process so that contact with food does not occur and it is not necessary to form the embossed portion and the negative- The stainless steel plate 14 itself is exposed to the outside, so that the consumers can know the material of the cooking container and increase the value of the product.

{Example 2}

FIG. 4 is a view illustrating a process of manufacturing a cooking container according to a second embodiment of the present invention.

As shown in FIG. 4, the method of manufacturing a cooking vessel according to the second embodiment of the present invention is similar to that of the first embodiment except that after the film adhering step, the etching step, the primary coating step and the film stripping step, A second coating step, and a molding step.

The second coating step may be performed by applying a coating solution to the surface of the stainless steel plate 10 having undergone the film peeling step so that the engraved portion 12 having the first coating layer 30 formed thereon, Thereby forming a second coating layer 40.

Since the surface of the stainless steel plate 10 which has been subjected to the film peeling step is limitedly coated only on the engraved portions 12 except for the relief portions 14, Some consumers may feel uncomfortable because they can stick to it in part.

Therefore, the film may be peeled off through all the steps, and the stainless steel plate 10, on which the embossed portion 14 is exposed, may be immediately molded through the forming step into the cooking container 100, The second coating layer 40 may be formed through the application step, and then the molding may be completed in the cooking container 100 through the molding step. The step of forming the second coating layer 40 on the embossed portion 14 is a secondary coating step. When the secondary coating step is performed, the first and second coating layers And a second coating layer 40 is formed on the embossed portion 14. As shown in FIG.

It is preferable that the second coating layer 40 formed in the second coating step adopts any one of a fluororesin coating and a ceramic coating.

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: a primer layer that gives adhesion, a mid layer that gives color and non-slip effect, and a top layer that protects the primer layer and the mid layer and is transparent.

That is, the primer solution is sprayed on the surface of the stainless steel plate by spraying method, and dried in a drying furnace at 430 ° C for about 15 minutes to 30 minutes to form a primer layer. On the primer layer, Followed by drying for about 15 minutes to 30 minutes in a 430 ° C drying furnace to form a primer layer and a mid layer. Finally, a coating liquid for forming a top layer was sprayed onto the mid layer, And dried in an oven for about 15 minutes to 30 minutes to form a second coating layer consisting of a primer layer, a mid layer and a top layer on the embossed portion and the engraved portion of the stainless steel plate.

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

That is, the coating liquid for forming the base layer is sprayed onto the surface of the stainless steel plate, and then dried in a drying furnace at 430 ° C. for about 15 minutes to 30 minutes to form a base layer, and a coating liquid for forming a top layer on the base layer Sprayed onto the surface of the stainless steel plate and then dried in a drying furnace at 430 ° C for about 15 minutes to 30 minutes to form a second coating layer composed of the base layer and the top layer on the embossed portion and the engraved portion of the stainless steel plate.

10: stainless steel plate 12: engraved part
14: Embossed 20 film
22: hole 30: first coating layer
40: Second coating layer

Claims (2)

A method for manufacturing a cooking container,
A film attaching step of attaching a film (20) having at least one hole (22) formed on a surface of a stainless steel plate (10);
A corrosive liquid is injected into the stainless steel plate 10 having the film 20 attached thereto through the film adhering step to impregnate the holes 22 of the film 20 with the corrosive liquid to form holes 22), the recessed portion (12) being recessed;
A first coating step of forming a first coating layer (30) on the stainless steel plate (10) through the corrugated portion (12) through the corrosion step;
A film peeling step of peeling the film 20 attached to the surface of the stainless steel plate 10 after the primary coating step to expose the embossed portion 14;
After the film was peeled off, the primer solution was sprayed on the engraved portion 12 and the embossed portion 14 of the stainless steel plate 10 in a spraying manner and then dried in a drying furnace at 430 ° C. for 15 minutes, After forming a forehead layer, the coating solution was sprayed onto the primer layer, and then dried in a drying furnace at 430 ° C for 15 minutes to form a primer layer and a mid layer, spraying the coating solution onto the mid layer, And then dried in a drying furnace at 430 캜 for 15 minutes to form a top layer to form a second coating layer 40 composed of a prime layer, a mid layer and a top layer in the engraved portion 12 and the embossed portion 14, A coating step;
And a molding step of molding the stainless steel plate (10) through the secondary coating step to form the cooking vessel (100).
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