WO2021114565A1

WO2021114565A1 - Non-stick coating spraying process for non-stick pan with protruding-recessed pattern

Info

Publication number: WO2021114565A1
Application number: PCT/CN2020/090231
Authority: WO
Inventors: 李昶浩
Original assignee: 李仕菊
Priority date: 2019-12-11
Filing date: 2020-05-14
Publication date: 2021-06-17
Also published as: CN111036512A; WO2021118299A1; KR20210074169A

Abstract

Disclosed is a non-stick coating spraying process for a non-stick pan with a protruding-recessed pattern. The process comprises: firstly, carrying out a sandblasting treatment on the inner surface of a pan body blank, wherein the adhesive force between the inner surface of the pan body blank and a coating is increased by means of a sandblasting layer (1), and the durability of a coating film is prolonged; then, spraying a base oil non-stick coating; next, carrying out a polishing treatment on protruding pattern positions by means of sandpaper, such that there is no base oil coating (2) at the protruding pattern positions, and the decorative effect of a protruding pattern is highlighted; and finally, spraying a surface oil non-stick coating on the pan body blank so as to increase the non-stick performance of the protruding pattern positions of a product. A prepared non-stick pan is firm and durable, and the base oil coating (2) achieves a lasting and complete non-stick effect under the protection of a complete surface oil coating (3), such that the problems of protrusion adhesion and of a recess coating being prone to falling off in an old process are effectively avoided, and the problem of a coating being scraped off by a slice is also solved, thereby greatly improving the complete non-stick performance, the service life and the appearance of the pan body.

Description

Non-stick coating spraying process for non-stick pan with concave-convex pattern

Technical field

The invention relates to a manufacturing process of kitchen cooking utensils, in particular to a non-stick coating spraying process of a non-stick pan with concave and convex patterns.

Background technique

The outer surface of the stainless steel pot currently on the market is generally polished and smooth. It is very beautiful when you buy it, but after a long time, the outer surface of the pot body will appear scratches, dirt, blackening, etc., and it will also appear. Food scraps stick to the outer surface of the pot body, causing troublesome cleaning. Therefore, a non-stick pan with concave and convex patterns is now available on the market. This design increases the heat absorption area, fast heat transfer, and long life. Moreover, the outer surface pattern is in contact with the stove, which can prevent slip and scratches. At the same time, it achieves the purpose of convenient cleaning.

However, the current spraying process of non-stick non-stick coating for non-stick pan with uneven patterns is to directly spray the non-stick pan coating on the pot body blank, and polish the convex pattern position with sandpaper, so that the convex pattern position is not non-stick pan. The coating is protected by the coating, and the coating at the concave position is also partially damaged by polishing. During the cooking process, the pot will still stick to the position. In addition, the non-stick pan coating at the concave pattern position is long It is also easy to fall off during the use of time, which makes it difficult to meet people's requirements for use.

Summary of the invention

In order to overcome the shortcomings of the above-mentioned manufacturing method, the present invention provides a non-stick coating spraying process for the non-stick pan coating and the pan body to be more firmly combined with the non-stick pan with uneven patterns.

The technical solutions adopted by the present invention to solve the above technical problems are:

A non-stick coating spraying process for non-stick pans with uneven patterns. The process steps are as follows:

Step S1: The pot body blank that needs to be sprayed with non-stick coating is subjected to high-temperature degreasing treatment; this step mainly uses high temperature to remove the dirt left by the surface of the pot body blank;

Step S2: Perform sandblasting treatment on the inner surface of the pot body blank, and the thickness of the sandblasting treatment is 0.3um ~ 4.5um; this step mainly performs high-pressure sandblasting treatment on the inner surface of the pot body blank, thereby improving the fatigue resistance of the blank. It increases the adhesion between it and the coating, prolongs the durability and abrasion resistance of the coating, and is also conducive to the leveling and decoration of the coating;

Step S3: Pre-heat treatment of the pot body blank; the pre-heat treatment is helpful for the subsequent non-stick coating spraying process, and improves the bonding degree of the non-stick coating with the inner surface of the pot;

Step S4: spray the base oil non-stick paint on the pot body blank, the spray thickness is 8um-40um; this step is the auxiliary non-stick paint processing;

Step S5: drying the pot body blank; the combination of a firm non-stick coating and the blank;

Step S6: Polish the raised pattern position with sandpaper, so that the raised pattern position has no primer coating; highlight the decorative effect of the raised pattern;

Step S7: spray surface oil non-stick paint on the pot body blank with a spray thickness of 8um-40um; increase the non-stickiness of the product;

Step S8: curing the pot body blank to improve the bonding degree of the non-stick coating.

Further improvement: the high-temperature degreasing described in the step S1 refers to sintering the grease remaining in the pot body blank in a high-temperature furnace at a temperature of 150°C to 450°C.

Further improvement: the material used in the sandblasting in the step S2 is: one or more of quartz sand, brown corundum, river sand, glass beads, and steel balls; the particle size of the material used in the sandblasting in the S2 is 38 Mesh ~ 180 mesh.

Further improvement: the preheating temperature of the step S3 is 30°-150°, and the time is 3 minutes to 30 minutes.

Further improvement: the drying temperature in the step S5 is 100°-450°, and the time is 10 minutes to 30 minutes.

Further improvement: the curing temperature of the step S8 is 100°-450°, and the time is 20 minutes to 60 minutes.

Further improvement: the primer non-stick coating and top oil non-stick coating of step S4 and step S7 are water-based non-stick coatings or water-based nano ceramic oils, which can be polytetrafluoroethylene (PTFE, also known as Teflon)

A further improvement: the primer non-stick coating of step S4 is made of pigmented material, and the surface oil non-stick coating of step S7 is of transparent material.

The beneficial effects of the present invention are: the process first performs sandblasting treatment on the inner surface of the pot body blank, increases the adhesion between it and the coating, and extends the durability and wear resistance of the coating film, and then performs the primer non-stick coating Spraying, and then polishing the raised pattern position with sandpaper, so that the raised pattern position has no primer coating, which highlights the decorative effect of the raised pattern; finally, spray the surface oil non-stick paint on the pot body to increase the product The position of the raised pattern is non-sticky; the non-stick pan made by this process is sturdy and durable. Because the primer coating is protected by the complete surface oil coating, it achieves a long-lasting, full-screen non-stick effect, effectively avoiding old The problem of process convex position adhesion and concave position coating is easy to fall off, which also increases the problem of the spatula shoveling off the paint, which greatly improves the full-screen non-stick performance, life and aesthetics of the pot body.

Description of the drawings

The present invention will be further described below with reference to the drawings and embodiments.

Figure 1 is a schematic structural diagram of an embodiment of the invention;

Fig. 2 is an enlarged cross-sectional view at A in Fig. 1.

Detailed ways

The technical solution of the present invention will be further explained by specific embodiments below.

Step S1: Perform high-temperature degreasing treatment on the pot body blank that needs to be sprayed with non-stick coating; the high-temperature degreasing described in this step refers to sintering the remaining grease in the pot body blank in a high-temperature furnace at a temperature of 150°C to 450°C; this step Mainly use high temperature to remove the dirt left by stretching the surface of the pot body;

Step S2: Perform sandblasting treatment on the inner surface of the pot body blank, and the thickness of the sandblasting treatment is 0.3um ~ 4.5um; this step mainly performs high-pressure sandblasting treatment on the inner surface of the pot body blank, and the materials used in the step sandblasting treatment It is: one or more of quartz sand, brown corundum, river sand, glass beads, steel balls; the particle size of the material used is 38 mesh to 180 mesh; this process mainly improves the fatigue resistance of the blank, and increases its and coating The adhesion between the layers prolongs the durability of the coating film, and is also conducive to the leveling and decoration of the coating;

Step S3: Pre-heat treatment of the pot body; the pre-heat treatment is helpful for the subsequent non-stick coating spraying processing. The pre-heating temperature is 30°-150°, and the time is 3 minutes to 30 minutes; this step mainly improves the non-stick coating The degree of bonding between the paint and the inner surface of the pot;

Step S5: drying the pot body blank; the drying temperature is 100°-450°, and the time is 10 minutes to 30 minutes. This step is mainly to firmly bond the non-stick coating and the blank;

The primer non-stick coating and top oil non-stick coating of step S4 and step S7 are water-based non-stick coatings or water-based nano ceramic oils, which can be polytetrafluoroethylene (PTFE, also known as Teflon); in order to achieve better For a good decorative effect, the primer non-stick coating of step S4 is made of pigmented material, and the surface oil non-stick coating of step S7 is of transparent material.

Refer to Figures 1 and 2; in the embodiment of the present invention, sandblasting is first performed on the inner surface of the pot body blank. The sandblasting layer 1 increases the adhesion between it and the coating and extends the durability of the coating film. The base oil non-stick paint is sprayed, and then the raised pattern position is polished with sandpaper, so that the raised pattern position does not have primer coating 2 to highlight the decorative effect of the raised pattern; finally, the surface oil is not applied to the pot body. Sticky paint spraying increases the non-stickiness of the raised pattern position of the product; the non-stick pan made by this process is sturdy and durable. Because the primer coating 2 is protected by the complete surface oil coating 3, it can achieve long-lasting and full-screen non-stickiness. The sticking effect effectively avoids the problems of the old process that the convex position is stuck and the concave position coating is easy to fall off. It also improves the problem of the spatula shoveling off the paint, greatly improving the full-screen non-stick performance, life and aesthetics of the pot body.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims

A non-stick coating spraying process for a non-stick pan with uneven patterns, which is characterized in that the process steps are as follows:

Step S1: subject the pot body blank to be sprayed with non-stick coating to high temperature degreasing treatment;

Step S2: Perform sandblasting treatment on the inner surface of the pot body blank, and the thickness of the sandblasting treatment is 0.3um～4.5um;

Step S3: pre-heat treatment of the pot body blank;

Step S4: Spray the base oil non-stick paint on the pot body blank, and the spray thickness is 8um-40um;

Step S5: drying the pot body blank;

Step S6: Polish the raised pattern position with sandpaper, so that the raised pattern position has no primer coating;

Step S7: spraying surface oil non-stick paint on the pot body blank, the spraying thickness is 8um-40um;

Step S8: curing the pot body blank.
The non-stick coating spraying process for a non-stick pan with a concave-convex pattern according to claim 1, wherein the high-temperature degreasing described in step S1 refers to heating the pan in a high-temperature furnace at a temperature of 150°C to 450°C. The grease remaining in the body blank is sintered.
The non-stick coating spraying process for a non-stick pan with uneven patterns according to claim 1, wherein the materials used in the sandblasting in the step S2 are: quartz sand, brown corundum, river sand, glass beads , One or more of steel balls.
According to claim 3, a non-stick coating spraying process for a non-stick pan with uneven patterns, characterized in that the particle size of the material used in the sandblasting treatment in the S2 is 38 mesh to 180 mesh.
A non-stick coating spraying process for a non-stick pan with uneven patterns according to claim 1, wherein the preheating temperature of step S3 is 30°-150°, and the time is 3 minutes to 30 minutes.
The non-stick coating spraying process for a non-stick pan with uneven patterns according to claim 1, wherein the drying temperature in step S5 is 100°-450°, and the time is 10 minutes to 30 minutes.
A non-stick coating spraying process for a non-stick pan with uneven patterns according to claim 1, wherein the curing temperature of step S8 is 100°-450°, and the time is 20 minutes to 60 minutes.
The non-stick coating spraying process for a non-stick pan with uneven patterns according to claim 1, wherein the primer non-stick coating and top oil non-stick coating in steps S4 and S7 are water-based non-stick coatings Or water-based nano ceramic oil.
The non-stick paint spraying process for a non-stick pan with uneven patterns according to claim 8, characterized in that: the primer non-stick paint and top oil non-stick paint of step S4 and step S7 are polytetrafluoroethylene dilute.
A non-stick paint spraying process for a non-stick pan with a concave-convex pattern according to claim 9, wherein the non-stick primer non-stick paint of step S4 is made of pigmented material, and the non-stick paint of step S7 top oil is Transparent material.