KR100194783B1 - Continuous air press coating of fluorocarbon resin on aluminum kitchenware manufacturing disc - Google Patents

Abstract

In continuous air presses of fluorocarbon resins on aluminum kitchenware, the fluorocarbon resin liquid is caused to flow under the air pressure through a narrow gap at the bottom of the air press unit while changing the viscosity of the fluorocarbon resin liquid. When the primer solution is coated on the aluminum plate introduced through the conveyor belt, the primer coated in the drying furnace is dried and then transferred to another conveyor belt to fluorocarbon resin solution on the primer coating layer, and then the primer is dried. In the same process, drying the same process, and finally the fluorocarbon resin-coated plate is introduced into the kiln through an automatic inflower, and when the calcination is completed, it is cooled in a cooler, but in the case of coating heat-resistant paint on the back side after slow cooling Heat-resistant paint on the back by automatically turning to the back A back up again in a heat-resistant coating Tinggi naenghu automatically rotating the rear of a heat-resistant coating fluorocarbon resin burning of aluminum kitchen utensils, characterized in that the re-coating a heat-resistant Figure roller coater air press coating methods and apparatus.

Description

Continuous air press coating of fluorocarbon resin on aluminum kitchenware manufacturing disc

1 is a schematic view of the continuous air press coating apparatus of the present invention.

2 is a schematic diagram of the air press coating and circulation system of the present invention.

3 is a schematic view of a thickness control apparatus of the present invention fluorocarbon resin.

The present invention relates to an overall apparatus for continuously air-press coating fluorocarbon resin (PTFE), circulating fluorocarbon resin, and thickness controlling fluorocarbon resin with respect to a manufacturing disc of aluminum kitchenware.

The fluorocarbon resin coating on the aluminum kitchen utensil manufacturing plate has been so far produced by spraying, which is not uniform in terms of quality, inefficient in production, and excessive consumption of chemicals. It is produced or coated with fluorocarbon resin by spin coating mentioned in Korean Patent No. 25805.

However, the replacement of the patented patent No. 106681 continuous automatic roller coating device of the original plate for manufacturing aluminum kitchen utensils and the method of manufacturing the fluorocarbon resin roller coating plate of the patent application No. 1881 aluminum kitchen utensils in 1994 Developed by technology, the plate coated with fluorocarbon resin roller has excellent thickness uniformity and mass dispersing, which can greatly reduce the production cost.However, the surface of the roller coated plate is coated with fluorocarbon resin with roller coating. Under pressure, the fluorocarbon resin is pressed. In this process, the fluorocarbon resin attached to the roller is slightly pushed down to form a fine wave pattern on the surface, and in the case of a frying pan used for general kitchen, the oil between the fine wave patterns This penetrates and becomes rather non-stick, showing excellent characteristics. In the case of rice cookers that do not use oil or oil, scraping with a spatula may cause peeling first, and when customers demand a smooth product, there is a limit to the roller coating device. The development of a device capable of managing thickness is required.

The breakthrough has been greatly improved to develop an air press coating device that can be mass-produced continuously while the surface is skin-coated and smooth and roller consumption is minimized.

In addition, the photo and the coating method of the already known Japanese literature coating can be applied to paint or paint with a thickness of 50㎛ ± 20% or more in one coating, but carbon fluorocarbon air press which requires a precise coating layer of 6-10㎛ ± 10% It is impossible to coat.

Hereinafter, the outline and characteristics of the fluorocarbon resin continuous air press coating method and apparatus will be described with examples.

The gist of the present invention is as shown in FIG. 1, the interval between the air press coating device 3 and the device for adjusting the air pressure and the thickness adjusting device for uniformly coating the fluorocarbon resin solution 5 on the aluminum sheet 1 as shown in FIG. Using the device to adjust the thickness of fluorocarbon resin by controlling the thickness to 1-1 mm, the device to continuously circulate for reuse of fluorocarbon resin, and the device to adjust the speed of the Kenbear belt 4 to 50-200m / min. By repeating two to six times in a row, the continuous manufacturing equipment to obtain a smooth and uniform coating layer while controlling the thickness of the fluorocarbon resin, and the fluorocarbon resin coated plate on one side are automatically turned to roll the heat-resistant paint on the back side. It is completed as a coating device.

In more detail, FIG. 1 shows a schematic diagram of an apparatus fabricated to continuously air press the fluorocarbon resin, and the viscosity of the fluorocarbon resin liquid 5 introduced into the air press coating apparatus 3 is 2000. FIG. When the pressure is changed to 1-5 atmospheres of air while changing to 8000 cps, the fluorocarbon resin liquid (5) flows down by the air pressure through the narrow gap in the lower part of the air press unit. Primer liquid (2) is coated on the aluminum plate (1) introduced through the bare belt (4) and the primer coated in the drying furnace (6) is only coated on the plate in a liquid state, so it should be dried quickly, so 50-150 10 seconds-3 minutes through the gas or electric furnace adjusted to ℃ and the drying process is transferred to another conveyor belt fluorocarbon resin solution (5) is air press coated on the primer coating layer again .

After coating and drying by the same process as primer drying, the coating layer thickness of carbon fluorocarbon resin can be applied with 5-500㎛, but depending on the uniformity and quality of coating layer, thinner fluorocarbon resin is made thinner to obtain thick coating layer 2-6 times. In the same process, the plate coated with fluorocarbon resin is finally introduced through the automatic inflow machine (7), and dried in a kiln (8) in a heat treatment furnace controlled at 400-600 ° C. and dried for 2 to 10 minutes. Coated fluorocarbon resins are bonded to each other to complete the coating.

When the firing is completed, the cooler (9) is cooled slowly and the coated sheet is automatically laminated through the inspection process.When the heat resistant coating is coated on the back side, the heat-resistant paint is applied again on the back heat-resistant coating machine (10) by automatically turning to the back side after slow cooling. Roller coated.

Finally, the finished product is packaged with protective vinyl on the board to protect the coated fluorocarbon resin and act as a protective film when forming the board.

2 shows a fluorocarbon resin air press coating apparatus and a fluorocarbon resin liquid circulating apparatus. The fluorocarbon resin liquid introduced into the air press coating apparatus is maintained at a constant pressure through the air pressure regulating valve 1 ', The carbon resin solution is a conveyor belt (9) when the fluorocarbon resin liquid flows into a thin film between thin gaps adjusted to 5㎛-1mm with a thickness adjusting plate (3 '), a thickness adjusting device (4'), and a fixing screw (5 '). When the aluminum sheet (7 ') on') passes between the thin films of fluorocarbon resin according to the speed of the conveyor belt, it flows down to the fluorocarbon resin recovery tank (10 ') on the aluminum sheet and is stored and filtered through the connection pipe. (11 '), where foreign matter in the fluorocarbon resin liquid or dust in the air is filtered and supplied to the air press coating apparatus through a circulation pump (12'), and the fluorocarbon resin liquid control valve (2 '). To adjust the amount.

3 is a fluorocarbon resin thickness adjusting device. When pressure is applied at a constant air pressure from an air pressure regulating valve (1 '), the fluorocarbon resin liquid is pushed down through a narrow gap at the bottom. It is manufactured with high precision to control the thickness in micron unit, and the thickness control plate (3 ') is adjusted to the thickness to be worked while moving slightly inclined by the sliding device (3˝) of general inclined plate structure, and the thickness is uniform in all parts. If it is adjusted, fix it with a fixing screw (5 ') so that it does not move.

The end of the thickness control plate (3 ') was processed to the edge of the blade (3˝´) to precisely control the thickness of the fluorocarbon resin.

Example 1

Fluorocarbon resin viscosity 2000cp, air pressure 1 atm, gap 5㎛

Conveyor Speed 50 m / min

Coating Thickness 4㎛

Two consecutive work after drying for 10 seconds at 50 ℃

5 minutes firing at 400 ° C

Crosscut Test Results 100/100

Example 2

After primer air press coating

Fluorocarbon resin viscosity 3000cp, air pressure 1 atm, gap 10㎛

Conveyor Speed 80m / min, Coating Thickness 8㎛

Two consecutive work after drying at 50 ℃ for 30 seconds

10 minutes firing at 400 ° C

Crosscut Test Results 100/100

Example 3

After primer air press coating

Fluorocarbon resin viscosity 5000cp, air pressure 2 atmospheres, gap spacing 15㎛,

Conveyor Speed 100m / min, Coating Thickness 12㎛

3 times continuous operation after drying at 80 ℃ for 1 minute

Firing at 500 ° C. for 3 minutes

Crosscut Test Results 100/100

Example 4

After primer air press coating

Fluorocarbon Resin Viscosity 6000cp, Air Pressure 5 Atm, Gap Thickness 30㎛,

Conveyor Speed 120m / min, Coating Thickness 22㎛

3 consecutive operations after drying at 100 ℃ for 5 minutes

2 minutes firing at 400 ° C

Crosscut Test Result

Example 5

After primer air press coating

Fluorocarbon resin viscosity 7000cp, air pressure 4 atm, gap spacing 500㎛,

Conveyor Speed 150m / min, Coating Thickness 430㎛

2 times continuous operation after drying at 150 ℃ for 3 minutes

5 minutes firing at 600 ℃

Crosscut Test Results 100/100

Example 6

After primer air press coating

Fluorocarbon resin viscosity 8000cp, air pressure 5atm, gap 1mm,

Conveyor Speed 200m / min, Coating Thickness 550㎛

Dry at 100 ° C for 3 minutes

5 minutes firing at 500 ° C

Crosscut Test Results 100/100

Example 7

After primer air press coating

Fluorocarbon resin viscosity 5000cp, air pressure 2 atmospheres, gap spacing 25㎛,

Conveyor Speed 100m / min, Coating Thickness 17㎛

4 consecutive works after drying at 90 ℃ for 2 minutes

5 minutes firing at 400 ° C

Crosscut Test Results 100/100

Example 8

After primer air press coating

Fluorocarbon resin viscosity 6000cp, air pressure 3 atm, gap 10㎛,

Conveyor Speed 120m / min, Coating Thickness 7㎛

6 times continuous operation after drying for 1 minute at 70 ℃

Firing at 400 ℃ for 3 minutes, crosscut test result 100/100

Example 9

After primer air press coating

Fluorocarbon resin viscosity 4000cp, air pressure 2 atm, gap 20㎛,

Conveyor Speed 120m / min, Coating Thickness 13㎛

5 consecutive operations after drying at 100 ℃ for 30 seconds

5 minutes firing at 400 ° C

Crosscut Test Results 100/100

Example 10

Good adhesion to the heat-resistant coating coating heat-resistant coating thickness 20㎛ on the back in Example 9

Claims (2)

An air press coating in which a conveyor belt 4 is installed so that the primer liquid 2 flows through the aluminum sheet 1 and a drying furnace 6 is installed next to it, followed by the fluorocarbon resin liquid 5 flowing therethrough. After several consecutive installations of the device (3), the automatic inlet machine (7) is installed next to the firing furnace (8), the cooling machine (9) and the heat-resistant paint coating machine (10) on the back and air in the air line of the device described above Install the pressure regulating valve (1 ') to the fluorocarbon resin supply line (2') and install the thickness adjusting plate (3 ') and thickness adjusting device (4') in the housing A device for continuously air-press coating a fluorocarbon resin of an aluminum kitchen utensil manufacturing disc, wherein the resin liquid recovery tank 10 'is provided next to the storage and filtering tank 11'. A pressure gauge 6 'is installed on the air press coating apparatus 3, and a sliding member 3, a fixing screw 5' and a blade edge 3 'are installed on the thickness adjusting plate 3'. Apparatus for continuously air-press coating a fluorocarbon resin of aluminum kitchen utensils.