Acid and alkali resistant membrane material for improving etching efficiency and etching method

Abstract

The invention discloses an acid and alkali resistant membrane material for improving etching efficiency. The acid and alkali resistant membrane material comprises a stainless steel base material and PET (polyethylene terephthalate) membranes coated and attached to the upper surface and the lower surface of the stainless steel base material. The cost of the acid and alkali resistant film material is lower than the cost of purchasing a dry film and printing ink, and the etching method based on the film material effectively reduces the production cost and the treatment cost of hazardous wastes. Compared with the original operation process, the operation process of the etching method for improving the etching efficiency reduces two operation processes, so that the turnover time of products on a production line can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wet etching, and in particular to an acid-base resistant film material and an etching method for improving etching efficiency. Background Art

[0002] At present, the etching industry in the market basically uses dry film or ink to cover the surface of the product before etching, which leads to the generation of hazardous waste and the cost of treating the hazardous waste. In addition, the cost of purchasing dry film and ink is relatively high. Therefore, it is necessary to develop a new etching method to reduce production costs and the cost of hazardous waste treatment. Summary of the invention

[0003] The object of the present invention is to provide an acid- and alkali-resistant film material and an etching method for improving etching efficiency, so as to solve one or more of the above-mentioned prior art problems.

[0004] On the one hand, an acid-base resistant film material for improving etching efficiency according to the present invention includes a stainless steel substrate and a PET film coated and attached to the upper and lower surfaces of the stainless steel substrate.

[0005] In some embodiments, the PET film is a PET high-viscosity film, and the viscosity of the PET film is 800-1500 g / 10 mm.

[0006] In some embodiments, the PET film has a thickness of 5-10 μm.

[0007] On the other hand, an etching method for improving etching efficiency according to the present invention comprises the following steps:

[0008] Cutting: Cut the stainless steel substrate covered with PET film;

[0009] Rolling film material: The cut stainless steel substrate coated with PET film is transported between the upper pressing wheel and the lower pressing wheel for lamination;

[0010] Laser: Cut the upper PET film of the stainless steel substrate into the required product shape by laser;

[0011] Etching: Place the stainless steel substrate on a conveyor belt and pass through the etching machine at a constant speed. After the etching liquid is sprayed, the part of the stainless steel that is not covered by the upper PET film is etched by the etching liquid;

[0012] Post-processing: The PET film on the surface of the etched stainless steel substrate is peeled off and cleaned to obtain the desired stainless steel product.

[0013] In some embodiments, the cutting step further includes a cleaning step, wherein the cleaning step includes pickling the surface of the stainless steel plate to be processed to remove oil stains and rust left on the surface due to external factors.

[0014] In some embodiments, the roller hardness of the upper pressing wheel and the lower pressing wheel is controlled at 75-85 degrees, the pressure is controlled at 8 kg, and the film rolling speed is controlled at 0.6-1.0 m / min.

[0015] In some embodiments, the laser step is specifically to perform point positioning in a laser device according to the prepared CAD laser data, and after the positioning is completed, a cutting operation is performed according to the CAD data to cut the upper PET film of the stainless steel substrate into the required product shape by laser.

[0016] In some embodiments, the etching step is specifically to pour a prepared ferric chloride solution with a concentration of 40±5 degrees Baume and a pH value of 4 to 6 degrees into a tank; then turn on the etching solution heating system, and when the etching solution temperature reaches 50 to 55°C, turn on the spray system and the transmission system; place the stainless steel substrate on a conveyor belt and pass it through the etching machine at a uniform speed. After the etching solution is sprayed, the part of the stainless steel not covered with the upper PET film is etched by the etching solution.

[0017] Beneficial effects:

[0018] The cost of the acid- and alkali-resistant film material of the present invention is lower than the cost of purchasing dry film and ink, and the etching method based on the film material can effectively reduce the production cost and the cost of hazardous waste treatment. Compared with the original operation process, the operation process of the etching method for improving etching efficiency of the present invention reduces 2 operation processes, which can effectively reduce the turnover time of the product in the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an acid- and alkali-resistant film material for improving etching efficiency according to an embodiment of the present invention;

[0020] Figure 2 A schematic flow chart of an etching method for improving etching efficiency according to an embodiment of the present invention;

[0021] Figure 3 This is a test report of a stainless steel product obtained according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] Example:

[0024] like Figure 1 As shown:

[0025] An acid- and alkali-resistant film material for improving etching efficiency includes a stainless steel substrate 10 and a PET film 20 coated and attached to the upper and lower surfaces of the stainless steel substrate 10, wherein the PET film 20 is a PET high-viscosity film, the viscosity of the PET film 20 is 800g / 10mm, and the thickness of the PET film 20 is 10μm.

[0026] like Figure 2 As shown:

[0027] An etching method for improving etching efficiency, characterized in that it comprises the following steps:

[0028] Cleaning: Pickle the surface of the stainless steel plate to be processed to remove the oil and rust left on the surface due to external factors;

[0029] Cutting: Cut the stainless steel substrate covered with PET film;

[0030] Rolling film material: The cut stainless steel substrate coated with PET film is transported between the upper pressing wheel and the lower pressing wheel for lamination. The roller hardness of the upper pressing wheel and the lower pressing wheel is controlled at 85 degrees, the pressure is controlled at 8kg, and the film rolling speed is controlled at 1.0m / min;

[0031] Laser: According to the laser data imported into the laser equipment, the grasping point is positioned. After the positioning is completed, the cutting operation is carried out according to the CAD data, and the upper PET film of the stainless steel substrate is cut into the required product shape by laser;

[0032] Etching: Pour the prepared ferric chloride solution with a concentration of 40±5 degrees Baume and a pH value of 4-6 degrees into the tank; then turn on the etching solution heating system, and when the etching solution temperature reaches 50-55°C, turn on the spray system and transmission system; put the stainless steel substrate on the conveyor belt and pass it through the etching machine at a uniform speed. After the etching solution is sprayed, the part of the stainless steel that is not covered with the upper PET film is etched by the etching solution;

[0033] Post-processing: The PET film on the surface of the etched stainless steel substrate is peeled off and cleaned to obtain the desired stainless steel product.

[0034] The cost of the acid- and alkali-resistant film material of the embodiment of the present invention is lower than the cost of purchasing dry film and ink, and the etching method based on this film material can effectively reduce the production cost and the cost of hazardous waste treatment. Compared with the original operation process, the operation process of the etching method of the embodiment of the present invention reduces 2 operation processes, which can effectively reduce the turnover time of the product on the production line.

[0035] The stainless steel product obtained in the embodiment was tested for yield strength, tensile strength and elongation after fracture at Guangdong Guangdian Metrology and Testing Group Co., Ltd. The test results are as follows: Figure 3 As shown. Figure 3It can be seen that the indicators of the stainless steel products obtained in the examples all meet the requirements.

[0036] It can be seen that the embodiment of the present invention can effectively reduce production costs and improve production efficiency by using an etching method that improves etching efficiency, and the adjusted operating method meets the requirements for various indicators.

[0037] The above are only preferred embodiments of the present invention. It should be pointed out that a person skilled in the art can make several similar modifications and improvements without departing from the inventive concept of the present invention, and these should also be regarded as within the protection scope of the present invention.

Claims

1. An acid-base resistant film material for improving etching efficiency, characterized in that: It comprises a stainless steel substrate (10) and a PET film (20) covering and adhering to the upper and lower surfaces of the stainless steel substrate (10).

2. The acid-base resistant film material for improving etching efficiency according to claim 1, characterized in that: The PET film (20) is a PET high-viscosity film, and the viscosity of the PET film (20) is 800-1500 g / 10 mm.

3. The acid-base resistant film material for improving etching efficiency according to claim 1, characterized in that: The thickness of the PET film (20) is 5-10 μm.

4. The etching method for improving etching efficiency according to claim 1, characterized in that: The following steps are involved: Cutting: Cut the stainless steel substrate covered with PET film; Rolling film material: The cut stainless steel substrate coated with PET film is transported between the upper pressing wheel and the lower pressing wheel for lamination; Laser: Cut the upper PET film of the stainless steel substrate into the required product shape by laser; Etching: Place the stainless steel substrate on a conveyor belt and pass through the etching machine at a constant speed. After the etching liquid is sprayed, the part of the stainless steel that is not covered by the upper PET film is etched by the etching liquid; Post-processing: The PET film on the surface of the etched stainless steel substrate is peeled off and cleaned to obtain the desired stainless steel product.

5. An etching method for improving etching efficiency according to claim 4, characterized in that: The cutting step also includes a cleaning step, which includes pickling the surface of the stainless steel plate to be processed to remove oil stains and rust left on the surface due to external factors.

6. The etching method for improving etching efficiency according to claim 4, characterized in that: The roller hardness of the upper pressing wheel and the lower pressing wheel is controlled at 75-85 degrees, the pressure is controlled at 8kg, and the film rolling speed is controlled at 0.6-1.0m / min.

7. An etching method for improving etching efficiency according to claim 4, characterized in that: The laser step specifically includes performing point positioning in the laser equipment according to the prepared CAD laser data, and performing cutting operation according to the CAD data after the positioning is completed, and cutting the upper PET film of the stainless steel substrate into the required product shape by laser.

8. An etching method for improving etching efficiency according to claim 4, characterized in that: The etching step specifically comprises the following steps: pouring a prepared ferric chloride solution with a concentration of 40±5 degrees Baume and a pH value of 4 to 6 degrees into a tank; then starting the etching solution heating system, and when the etching solution temperature reaches 50 to 55° C., turning on the spray system and the transmission system; placing the stainless steel substrate on a conveyor belt and passing through the etching machine at a uniform speed, and after the etching solution is sprayed, the part of the stainless steel not covered with the upper PET film is etched by the etching solution.

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