WO2021118299A1

WO2021118299A1 - Non-stick paint spraying method for non-stick pan having uneven pattern

Info

Publication number: WO2021118299A1
Application number: PCT/KR2020/018169
Authority: WO
Inventors: 이창호
Original assignee: 지앙먼 이샨 메탈 프로덕츠 컴퍼니 리미티드; 주식회사 블랙큐브
Priority date: 2019-12-11
Filing date: 2020-12-11
Publication date: 2021-06-17
Also published as: WO2021114565A1; KR20210074169A; CN111036512A

Abstract

The present invention relates to a non-stick paint spraying method for a non-stick pan having an uneven pattern, and the present invention first performs sand blasting on the inner surface of a half-finished pan product, thereby enabling an increase in adhesive strength between the half-finished product and a coating layer and improvement in the durability of a coating film, then sprays a base oil non-stick paint and polishes a protruding pattern position by means of sandpaper so as to remove the base oil coating layer of the protruding pattern position, thereby enabling improvement in the decorative effect of a protruding pattern, and finally sprays a surface oil non-stick paint at the half-finished pan product, thereby enabling improvement in the non-stick effect of the protruding pattern position of the product. A non-stick pan manufactured by the present invention is sturdy and has excellent durability, and can achieve a long-term and complete non-stick effect since the base oil coating layer thereof is protected by a surface oil coating layer, resolve the problem of a conventional method in which a protruding position is fixed or the coating layer of a depressed position is readily removed, reduce paint chipping caused by a spatula and completely improve the non-stick effect, lifespan and aesthetic property of a pan.

Description

Non-stick paint spraying method for non-stick pans with uneven patterns

The present invention relates to a method of manufacturing kitchen utensils, and more particularly, to a non-stick paint spraying method of a non-stick pan having an uneven pattern.

Since the outer surface of the stainless steel pan sold in the market currently uses a smooth surface that has been polished, the appearance is beautiful at the time of purchase, but the outer surface of the pan may be scratched or dirty after using it for a certain period of time. There is a problem in that it becomes dark, and food residues adhere to the outer surface of the pan, making it difficult to clean. Accordingly, a non-stick fan with a concave-convex pattern has appeared on the market. This design increases the heat absorption area of the product, allows heat to be transferred more quickly, and prolongs the service life. By making it come into direct contact with the range, it can prevent slipping and scratching while making cleaning easier.

However, in the conventional non-stick paint spraying method of a non-stick pan having a concave-convex pattern, the non-stick coating layer is directly sprayed on the semi-finished pan product and the protruding pattern position is polished using sandpaper. Since the protective function of the non-stick coating layer is lost, and the coating layer at the recessed position is also partially destroyed due to grinding, the adhesion phenomenon occurs at the position during the process of cooking food, and furthermore, the non-stick position of the recessed pattern position Since the stick coating layer easily falls off during the process of long-term use, it becomes difficult to satisfy the needs of users.

In order to solve the problems existing in the above manufacturing method, the present invention provides a non-stick paint spraying method of a non-stick pan having a concave-convex pattern that allows the non-stick pan coating layer and the pan to be more firmly coupled.

In order to solve the above technical problems, the present invention is implemented using the following technical solutions.

The non-stick paint spraying method of a non-stick pan having a concave-convex pattern according to the present invention comprises the following steps.

A step S1 of high-temperature treatment of the semi-finished pan to be sprayed with non-stick paint to remove oil, this step mainly uses high temperature to remove contaminants remaining during the tensile process of the surface of the semi-finished pan;

The inner surface of the semi-finished pan is sandblasted, but the thickness of the sandblasting treatment is 0.3㎛ ~ 4.5㎛. This step is mainly performed to sandblast the inner surface of the semi-finished pan at high pressure to improve the fatigue resistance of the semi-finished product. improve the adhesion between the semi-finished product and the coating layer, improve the durability and abrasion resistance of the coating film, and help with the leveling and decoration of the paint;

S3 step of preheating the semi-finished pan product, wherein the preheating treatment helps spray processing of the non-stick paint in a subsequent step and improves the bonding degree between the non-stick paint and the inner surface of the pan;

The base oil non-stick paint is sprayed on the semi-finished pan product, but the spray thickness is 8㎛ ~ 40㎛ S4 step, this step causes the action of assisting the non-stick paint processing,

S5 step of drying the pan semi-finished product, so that the bond between the non-stick paint and the semi-finished product is stronger,

As a step S6 of removing the base oil coating layer at the protruding pattern position by polishing the protruding pattern position using sandpaper, the decorative effect of the protruding pattern is improved,

Spray the surface oil non-stick paint on the semi-finished pan product, but the spray thickness is 8㎛ ~ 40㎛ step S7, improving the non-stick effect of the product,

As a step S8 of curing the semi-finished pan product, the bonding degree of the non-stick paint is improved.

Furthermore, the process of removing the oil by high-temperature treatment in step S1 is a process of sintering the oil remaining in the semi-finished pan in a high-temperature furnace of 150°C to 450°C.

Furthermore, the material used in the sand blasting process of step S2 is one or more of silica sand, gold steel sand, river sand, glass beads, and steel beads, and the particle size of the material used in the sand blasting process of step S2 is 38 mesh ~ 180 mesh.

Furthermore, the preheating temperature of the step S3 is 30° C. to 150° C., and the preheating time is 3 minutes to 30 minutes.

Furthermore, the drying temperature in step S5 is 100° C. to 450° C., and the preheating time is 10 minutes to 30 minutes.

Furthermore, the curing temperature of step S8 is 100° C. to 450° C., and the preheating time is 20 minutes to 60 minutes.

Furthermore, the base oil non-stick paint and surface oil non-stick paint of steps S4 and S7 are water-based non-stick paint or water-based nano-porcelain oil, and may be polytetrafluoroethylene (PTFE, also called Teflon). have.

Furthermore, the base oil non-stick paint of step S4 is a pigment-containing material, and the surface oil non-stick paint of step S7 is a transparent material.

The beneficial effects of the present invention are as follows. That is, this method can increase the adhesion between the semi-finished product and the coating layer and improve the durability and abrasion resistance of the coating film by first performing sandblasting treatment on the inner surface of the semi-finished pan product, followed by spraying of the base oil non-stick paint Then, by polishing the protruding pattern position using sandpaper to remove the base oil coating layer at the protruding pattern position, the decorative effect of the protruding pattern can be improved, and finally, the surface oil non-stick paint is applied to the pan semi-finished product. By performing spraying, it is possible to enhance the non-stick effect of the protruding pattern position of the product; The non-stick pan manufactured through this method is strong and durable, and since the base oil coating layer is protected by the surface oil coating layer, a long-term and full-scale non-stick effect can be achieved, and protrusion from the conventional method It is possible to solve the problem of adhesion of the position or the easy removal of the coating layer in the depressed position, alleviating the problem of paint destruction due to the spatula, and improving the overall non-stick effect, lifespan and aesthetics of the fan.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and examples.

1 is a structural illustration of an embodiment according to the present invention.

Fig. 2 is an enlarged cross-sectional view of the position A in Fig. 1;

- Explanation of symbols

1: Sandblasting layer

2: base oil coating layer

3: surface oil coating layer

Hereinafter, the technical solution of the present invention will be described in detail by combining specific implementation methods.

As the S1 step of removing oil by high-temperature treatment of the semi-finished pan product to be sprayed with non-stick paint, the process of removing the oil by high-temperature treatment in this step is the oil remaining in the semi-finished pan product in a high-temperature furnace of 150°C to 450°C. is a process of sintering, this step mainly uses high temperature to remove contaminants remaining during the tensile process of the surface of the semi-finished pan;

The inner surface of the semi-finished pan is sandblasted, but the thickness of the sandblasting treatment is 0.3㎛~4.5㎛ in S2 stage. one or more of these, and the particle size of the material used in the sand blasting process in this step is 38 mesh to 180 mesh, and this process mainly improves the fatigue resistance of the semi-finished product by performing sand blasting at high pressure on the inner surface of the semi-finished product. and increase the adhesion between the semi-finished product and the coating layer, improve the durability of the coating film, and help leveling and decorating the paint;

As the S3 stage of preheating treatment for the semi-finished pan, the preheating treatment is helpful for spray processing of non-stick paint in a subsequent step, the preheating temperature is 30° to 150°, the preheating time is 3 to 30 minutes, This step mainly improves the bonding between the non-stick paint and the inner surface of the pan;

The base oil non-stick paint is sprayed on the semi-finished pan, but the spray thickness is 8㎛ ~ 40㎛ S4 step, this step causes the action of assisting the non-stick paint processing,

Step S5 of drying the pan semi-finished product, wherein the drying temperature is 100° C. to 450° C., and the preheating time is 10 minutes to 30 minutes. This step is mainly to make the bond between the non-stick paint and the semi-finished product more firm, and ,

Furthermore, the base oil non-stick paint and surface oil non-stick paint of steps S4 and S7 are water-based non-stick paint or water-based nano-porcelain oil, and may be polytetrafluoroethylene (PTFE, also called Teflon). And, in order to realize a more excellent decorative effect, the base oil non-stick paint of step S4 is a pigment-containing material, and the surface oil non-stick paint of step S7 is a transparent material.

1 and 2, the embodiment according to the present invention increases the adhesion between the semi-finished product and the coating layer through the sand blasting layer 1 by first performing sand blasting treatment on the inner surface of the semi-finished pan product, and the durability of the coating film Then, spraying of the base oil non-stick paint is performed, and then the protruding pattern position is polished using sandpaper to remove the base oil coating layer 2 at the protruding pattern position, thereby decorating the protruding pattern. can improve the effect, and finally improve the non-stick effect of the protruding pattern position of the product by spraying the surface oil non-stick paint on the pan semi-finished product; The non-stick pan manufactured through this method is strong and durable, and since the base oil coating layer 2 is protected by the surface oil coating layer 3, a long-term and full-scale non-stick effect can be achieved. , it is possible to solve the problem that the protruding position in the conventional method coalesces or the coating layer in the depressed position is easily removed, alleviates the problem of paint destruction due to the spatula, and overall the non-stick effect of the pan, life and aesthetics can improve

The above description of the disclosed embodiments is intended to enable those skilled in the art to make or use the present invention. Various modifications to the above embodiments are obvious and obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit and scope of the present invention. may be Accordingly, the present invention is not intended to be limited to the above embodiments disclosed herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention is applicable to the field of manufacturing kitchen utensils.

Claims

S1 step of removing oil by high-temperature treatment of the semi-finished pan to be sprayed with non-stick paint;

Step S2 of sandblasting the inner surface of the semi-finished pan product, and the thickness of the sandblasting treatment is 0.3㎛ ~ 4.5㎛;

S3 step of preheating the semi-finished pan;

S4 step of spraying the base oil non-stick paint on the semi-finished pan, but the spray thickness is 8㎛ ~ 40㎛;

S5 step of drying the pan semi-finished product;

S6 step of polishing the protruding pattern position using sandpaper to remove the base oil coating layer at the protruding pattern position;

S7 step of spraying the surface oil non-stick paint on the semi-finished pan, but the spray thickness is 8㎛ ~ 40㎛;

S8 step of curing the semi-finished pan product; A non-stick paint spraying method of a non-stick pan having an uneven pattern, characterized in that it comprises a.
According to claim 1,

The process of removing the oil by high-temperature treatment in step S1 is a process of sintering the oil remaining in the semi-finished pan in a high-temperature furnace of 150°C to 450°C. How to spray paint.
According to claim 1,

The non-stick paint spraying method of a non-stick pan having an uneven pattern, characterized in that the material used in the sandblasting treatment of step S2 is one or more of silica sand, gold steel sand, river sand, glass beads, and steel beads.
4. The method of claim 3,

The non-stick paint spraying method of a non-stick pan having a concave-convex pattern, characterized in that the particle size of the material used in the sand blasting treatment of step S2 is 38 mesh to 180 mesh.
According to claim 1,

The non-stick paint spraying method of a non-stick pan having a concave-convex pattern, characterized in that the preheating temperature of the step S3 is 30°C to 150°C, and the preheating time is 3 minutes to 30 minutes.
According to claim 1,

The drying temperature of the step S5 is 100° C. to 450° C., and the drying time is 10 to 30 minutes. A non-stick paint spraying method of a non-stick pan having a concave-convex pattern.
According to claim 1,

The non-stick paint spraying method of a non-stick pan having a concave-convex pattern, characterized in that the curing temperature of the step S8 is 100° C. to 450° C., and the drying time is 20 minutes to 60 minutes.
According to claim 1,

The base oil non-stick paint and surface oil non-stick paint of steps S4 and S7 are water-based non-stick paint or water-based nano-porcelain oil. Non-stick paint spray of a non-stick pan having an uneven pattern, characterized in that Way.
9. The method of claim 8,

The non-stick paint spraying method of a non-stick pan having an uneven pattern, characterized in that the base oil non-stick paint and the surface oil non-stick paint of steps S4 and S7 are polytetrafluoroethylene.
10. The method of claim 9,

The non-stick paint spraying method of a non-stick pan having an uneven pattern, characterized in that the base oil non-stick paint of step S4 is a pigment-containing material, and the surface oil non-stick paint of step S7 is a transparent material.