Membrane material roughening treatment device and system

Abstract

The utility model discloses a membrane material roughening treatment device and system, and belongs to the technical field of surface treatment. Comprising a dipping mechanism and a dipping adjusting mechanism, the dipping mechanism comprises a treatment tank, a feeding roller, a discharging roller, a plurality of ultrasonic vibration rods, a plurality of water distribution pipes, a heating device, an ultrasonic generator, a bubble generator and a controller; the dipping adjusting mechanism comprises two horizontal adjusting frames and a plurality of vertical adjusting frames which are symmetrically arranged, each vertical adjusting frame is provided with an adjusting rod, an adjusting roller is arranged between each group of adjusting rods which are symmetrically arranged, and the membrane material enters the processing cavity through the feeding roller and passes through the upper side area of the ultrasonic vibration rods through the adjusting rollers; and then the material is moved out of the processing cavity through the discharging roller. The impregnation degree of the membrane material is accurately controlled through the adjusting structure, and the membrane material can be in full contact with surrounding treatment liquid in combination with microbubble and ultrasonic treatment, so that the surface uniformity and consistency of the roughening effect are improved.

Description

Technical Field

[0001] The present application relates to a membrane material roughening treatment device and system, belonging to the field of surface treatment technology. Background Art

[0002] Chemical plating of membrane materials is a key surface treatment technology. By forming a uniform and dense chemical synthetic film on the surface of the substrate, the performance and function of the substrate can be improved. The chemical plating of membrane materials has important application value in improving the performance of the substrate, improving the surface properties, and realizing specific functions. It is widely used in many industrial fields, especially in the automotive, aerospace and electronics industries. The roughening process is a crucial link in the chemical plating process. The roughness of the substrate surface has a very critical influence on improving the adhesion and uniformity of the coating, thereby ensuring the quality and stability of the coating. However, in the chemical plating process of membrane materials, the surface roughening treatment of the membrane material still has deficiencies in uniformity and consistency, especially in the process links that require online continuous processing of the membrane material and require surface roughening through chemical reactions. The precision control of process parameters, the uniformity of the treatment liquid, and the surface contact between the treatment liquid and the material will have a significant impact on the roughening effect. Utility Model Content

[0003] In order to solve the problem of difficulty in controlling the uniformity of the roughening effect caused by the instability of the reaction process due to the poor contact between the membrane material and the treatment liquid in the roughening treatment process before chemical plating of the membrane material in the prior art, especially in the roughening process involving the reaction process in the continuous treatment of the membrane material, according to one aspect of the present application, a membrane material roughening treatment device is provided, which controls the immersion state of the membrane material and utilizes the combined effect of microbubbles and ultrasound to make the treatment liquid near the membrane material fully contact with the membrane material, thereby improving the uniformity and consistency of the roughening treatment.

[0004] This application adopts the following technical solutions:

[0005] A membrane material roughening treatment device comprises an impregnation mechanism and an impregnation adjustment mechanism;

[0006] The impregnation mechanism comprises a processing tank (1), a feed roller (5), a discharge roller (6), a plurality of ultrasonic vibration rods (3), a plurality of water distribution pipes (4), a heating device (12), an ultrasonic generator (13), a bubble generator (14), and a controller (15);

[0007] The inner wall of the processing tank (1) forms a processing chamber (2);

[0008] The heating device (12) is arranged on the inner wall of the processing tank (1) in the processing chamber (2);

[0009] The plurality of ultrasonic vibration rods (3) and the plurality of water distribution pipes (4) are horizontally distributed at the lower part of the processing chamber (2), and the plurality of ultrasonic vibration rods (3) are located on the upper side of the plurality of water distribution pipes (4); the plurality of ultrasonic vibration rods (3) are electrically connected to the ultrasonic generator (13), and the plurality of water distribution pipes (4) are connected to the bubble generator (14) via the liquid outlet pipe (16) and the liquid inlet pipe (17);

[0010] The ultrasonic generator (13), the bubble generator (14), and the controller (15) are arranged outside the treatment tank (1);

[0011] The feed roller (5) and the discharge roller (6) are respectively fixedly arranged at the upper ends of the two opposite ends of the processing tank (1) along the moving direction of the film material (11);

[0012] The impregnation adjustment mechanism comprises two horizontal adjustment frames (7) which are symmetrically fixedly arranged at the upper ends of the sides of the treatment tank (1) on both sides of the membrane material moving direction;

[0013] A plurality of vertical adjustment frames (8) are arranged on a side of each of the horizontal adjustment frames (7) facing the processing chamber (2), and a lower end of each vertical adjustment frame (8) is slidably connected and fixed to the horizontal adjustment frame (7);

[0014] An adjustment rod (9) is provided on a side of each vertical adjustment frame (8) facing the processing chamber (2), and an upper end of the adjustment rod (9) is slidably connected and fixed to the vertical adjustment frame (8);

[0015] The adjusting rods (9) on both sides of the processing chamber (2) are symmetrically arranged one by one, an adjusting roller (10) is arranged between each group of symmetrically arranged adjusting rods (9), and both ends of the adjusting roller (10) are rotatably connected and fixed to the lower end of the corresponding adjusting rod (9);

[0016] The membrane material (11) enters the processing chamber (2) through a feed roller (5), passes through an upper area of ​​a plurality of ultrasonic vibration rods (3) through an adjustment roller (10), and then moves out of the processing chamber (2) through a discharge roller (6).

[0017] In the present application, the heating device, ultrasonic vibration rod, ultrasonic generator, bubble generator, and controller are not strictly limited in the present application. Those skilled in the art can purchase corresponding commercial products for use as needed or adopt existing technical solutions for design and general improvements.

[0018] The sliding connection and fixing method between the horizontal adjustment frame, the vertical adjustment frame and the adjustment rod is not strictly limited in this application. For example, the sliding connection and fixing can be achieved by combining a slide rail and an electric cylinder.

[0019] Optionally, one end of the liquid inlet pipe (17) is fixedly connected to the outlet of the bubble generator (14), and the other end of the liquid inlet pipe (17) is connected to one end of the water distribution pipe (4); one end of the liquid outlet pipe (16) is fixedly connected to the inlet of the bubble generator (14), and the other end of the liquid outlet pipe (16) is connected to the middle of the processing chamber (2).

[0020] Optionally, one end of the water distribution pipe (4) is fixed on an inner wall of one side of the treatment tank (1), the liquid inlet pipe (17) and the liquid outlet pipe (16) pass through a tank body of one side of the treatment tank (1), and the outer sides of the liquid inlet pipe (17) and the liquid outlet pipe (16) are sealed and connected to the treatment tank (1).

[0021] Optionally, one end of the ultrasonic vibration rod (3) is fixed to an inner wall of one side of the treatment tank (1).

[0022] Optionally, among the plurality of water distribution pipes (4), the distance between two adjacent water distribution pipes (4) is 10 to 30 cm.

[0023] Optionally, a plurality of through holes are provided on the surface of the water distribution pipe (4).

[0024] Optionally, the cross-section of the water distribution pipe (4) is one of circular and triangular.

[0025] Optionally, one end of the water distribution pipe (4) is fixed on an inner wall of one side of the treatment tank (1), and the other end is a closed end.

[0026] Optionally, among the plurality of ultrasonic vibration rods (3), each ultrasonic vibration rod (3) is arranged on the center line of two adjacent water distribution pipes (4).

[0027] Optionally, the distance between the horizontal plane formed by the plurality of ultrasonic vibration rods (3) and the horizontal plane of the plurality of ultrasonic vibration rods (3) is 5 to 15 cm.

[0028] Optionally, the controller (15) is connected to the feed roller (5), the discharge roller (6), the horizontal adjustment frame (7), the vertical adjustment frame (8), and the adjustment rod (9) through an electric drive transmission;

[0029] The controller (15) is electrically connected and controlled with the ultrasonic generator (13), the bubble generator (14), and the heating device.

[0030] According to another aspect of the present application, a membrane material roughening treatment system is provided, comprising a plurality of treatment units connected in series;

[0031] Each processing unit includes at least one of the above-mentioned membrane material roughening processing devices.

[0032] Optionally, the membrane material roughening treatment system is a roughening treatment system for continuously treating polyimide membrane materials;

[0033] The membrane material roughening treatment system comprises a cleaning unit, a pre-roughening unit, a water washing unit a, a roughening unit a, a roughening unit b, and a water washing unit b which are arranged in series in sequence;

[0034] The membrane material (11) passes through the membrane material roughening treatment device in the above-mentioned cleaning unit, pre-roughening unit, water washing unit a, roughening unit a, roughening unit b, and water washing unit b in sequence;

[0035] Wherein, in the pre-roughening unit, the number of the membrane material roughening treatment devices is 1 to 3;

[0036] In the roughening unit a, the number of the membrane material roughening treatment devices is 1 to 6;

[0037] In the roughening unit b, the number of the film material roughening treatment devices is 1 to 24.

[0038] In the present application, at a uniform membrane material moving speed, the immersion contact time between a unit area of ​​the membrane material and the treatment liquid in each treatment unit is adjusted within a certain range by adjusting the positions of two adjustment rollers (10), that is, the total area of ​​the membrane material (11) immersed in the treatment liquid is controlled to achieve control of the contact time between the unit area of ​​the membrane material and the treatment liquid. When the position adjustment of the two adjustment rollers (10) cannot meet the contact time requirement between the unit area of ​​the membrane material and the treatment liquid, the contact time between the membrane material and the treatment liquid can be further prolonged by connecting in series a membrane material roughening treatment device containing the same treatment liquid.

[0039] The beneficial effects of this application include:

[0040] The membrane material roughening treatment device provided by the present application can precisely control the degree of impregnation of the membrane material by adjusting the structure, and can make the membrane material fully contact with the surrounding treatment liquid by combining microbubbles and ultrasonic treatment to improve the surface uniformity and consistency of the roughening effect. After the membrane material roughening treatment device is connected in series as a membrane material roughening treatment system, the treatment effect of each process unit can be independently adjusted to achieve continuous treatment of multiple continuous roughening processes, and the cleaning and water washing units of the membrane material in the treatment system can also improve the surface cleaning degree of the membrane material through the synergistic effect of microbubbles and ultrasonic treatment in the membrane material roughening treatment device of the present application. By adjusting the position of the adjusting roller in the membrane material roughening treatment device, the degree and contact area of ​​contact between the membrane material and the treatment liquid can be controlled, and then the different processing times of each unit can be coordinated in the entire membrane material roughening treatment system to achieve the continuous treatment process of the membrane material as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1This is a schematic diagram of the structure of the membrane material roughening treatment device of this application.

[0042] Figure 2 This is a schematic diagram of the impregnation adjustment mechanism of this application.

[0043] Figure 3 This is a schematic diagram of the water distribution pipe structure for this application.

[0044] Figure 4 This is a schematic diagram of the structure of the membrane material roughening treatment system of this application.

[0045] Figure ID

[0046] 1. Treatment tank; 2. Treatment chamber; 3. Ultrasonic vibration rod; 4. Water distribution pipe; 5. Feed roller; 6. Discharge roller; 7. Horizontal adjustment frame; 8. Vertical adjustment frame; 9. Adjustment rod; 10. Adjustment roller; 11. Membrane material; 12. Heating device; 13. Ultrasonic generator; 14. Bubble generator; 15. Controller; 16. Liquid outlet pipe; 17. Liquid inlet pipe. DETAILED DESCRIPTION

[0047] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0048] Unless otherwise specified, the raw materials in the examples of this application were purchased through commercial channels.

[0049] Unless otherwise specified, conventional methods were used for testing and instrument settings were those recommended by the manufacturer.

[0050] Example 1: Membrane material roughening treatment device

[0051] like Figure 1 , Figure 2 As shown, a membrane material roughening treatment device comprises an impregnation mechanism and an impregnation adjustment mechanism; the impregnation mechanism comprises a treatment tank (1), a feed roller (5), a discharge roller (6), 9 ultrasonic vibration rods (3), 8 water distribution pipes (4), a heating device (12), an ultrasonic generator (13), a bubble generator (14), and a controller (15); the inner wall of the treatment tank (1) forms a treatment chamber (2).

[0052] The heating device (7) is symmetrically arranged on the inner walls of both sides of the treatment tank (1) in the treatment chamber (2). The nine ultrasonic vibration rods (3) and the eight water distribution pipes (4) are horizontally distributed in the lower part of the treatment chamber (2), and the nine ultrasonic vibration rods (3) are located on the upper side of the eight water distribution pipes (4); the nine ultrasonic vibration rods (3) are electrically connected to the ultrasonic generator (13), and the eight water distribution pipes (4) are connected to the bubble generator (14) through the liquid outlet pipe (16) and the liquid inlet pipe (17), and the liquid outlet pipe (16) and the liquid inlet pipe (17) are both combined into one pipe outside the treatment tank (1) and then connected to the bubble generator. The ultrasonic generator (13), the bubble generator (14), and the controller (15) are arranged outside the processing tank (1); the feed roller (5) and the discharge roller (6) are respectively fixedly arranged at the upper ends of the two opposite ends of the processing tank (1) along the moving direction of the membrane material (11); the impregnation adjustment mechanism includes two horizontal adjustment frames (7) which are symmetrically fixedly arranged at the upper ends of the side of the processing tank (1) on both sides of the moving direction of the membrane material; each of the horizontal adjustment frames (7) is provided with two vertical adjustment frames (8) on the side facing the processing chamber (2), and the lower end of each vertical adjustment frame (8) is slidably connected and fixed to the horizontal adjustment frame (7); each of the vertical adjustment frames (8) is provided with an adjustment rod (9) on the side facing the processing chamber (2), and the upper end of the adjustment rod (9) is slidably connected and fixed to the vertical adjustment frame (8), and the sliding connection and fixation are achieved by conventional slide rails and cylinders. The adjusting rods (9) on both sides of the processing chamber (2) are symmetrically arranged one by one, and an adjusting roller (10) is arranged between each group of symmetrically arranged adjusting rods (9), and the two ends of the adjusting roller (10) are respectively rotatably connected and fixed to the lower ends of the corresponding adjusting rods (9); the membrane material (11) enters the processing chamber (2) from the feed roller (5), passes through the upper area of ​​the 9 ultrasonic vibration rods (3) through the adjusting roller (10), and then moves out of the processing chamber (2) through the discharge roller (6). One end of the liquid inlet pipe (17) is fixedly connected to the outlet of the bubble generator (14), and the other end of the liquid inlet pipe (17) is connected to one end of the water distribution pipe (4); one end of the liquid outlet pipe (16) is fixedly connected to the inlet of the bubble generator (14), and the other end of the liquid outlet pipe (16) is connected to the middle of the processing chamber (2). One end of the water distribution pipe (4) is fixed on one inner wall of the treatment tank (1), and the liquid inlet pipe (17) and the liquid outlet pipe (16) pass through one side of the tank body of the treatment tank (1). The outer sides of the liquid inlet pipe (17) and the liquid outlet pipe (16) are sealed and connected to the treatment tank (1). One end of the ultrasonic vibration rod (3) is fixed on one inner wall of the treatment tank (1). Among the 8 water distribution pipes (4), the distance between two adjacent water distribution pipes (4) is 15 cm. Figure 3As shown, the cross-section of the water distribution pipe (4) is triangular, and a plurality of through holes are provided on the surface of the water distribution pipe (4). One end of the water distribution pipe (4) is fixed on the inner wall of one side of the treatment tank (1), and the other end is a closed end. Among the 9 ultrasonic vibration rods (3), each ultrasonic vibration rod (3) is arranged on the midline of two adjacent water distribution pipes (4). The distance between the horizontal plane formed by the 8 ultrasonic vibration rods (3) and the horizontal plane of the 9 ultrasonic vibration rods (3) is 10 cm. The controller (15) is connected to the feed roller (5), the discharge roller (6), the horizontal adjustment frame (7), the vertical adjustment frame (8), and the adjustment rod (9) through an electric drive transmission; the controller (15) is controlled by an electrical connection with the ultrasonic generator (13), the bubble generator (14), and the heating device.

[0053] During operation, the controller (15) controls the feed roller (5) and the discharge roller (6) to actively move, thereby pulling the membrane material (11) to move. The membrane material (11) enters the processing chamber (2) through the feed roller (5), passes through two adjustment rollers (10), and leaves the processing chamber (2) through the discharge roller (11), so that the membrane material (11) is immersed in the processing liquid in the processing chamber. The controller (15) controls the horizontal movement of the vertical adjustment rod (8) on the horizontal adjustment frame (7) and the vertical movement of the adjustment rod (9) on the vertical adjustment rod (8), controls the position of the adjustment roller (10), and makes the horizontal distance between the membrane material (11) between the two adjustment rollers (10) and the 9 ultrasonic vibration rods (3) be 10 cm. The operation of the ultrasonic generator (13) is controlled by a controller (15) so that the ultrasonic vibration rod (3) generates ultrasonic vibrations. The operation of the bubble generator (14) is controlled by the controller (15) so that the bubble generator draws the treatment liquid in the middle of the treatment chamber (2) into the mixed gas in the bubble generator through the liquid outlet pipe (16) to generate a treatment liquid containing microbubbles, which then flows back to the lower part of the treatment chamber (2) through the liquid inlet pipe and the water distribution pipe (4). The treatment liquid containing microbubbles is ultrasonically treated by the ultrasonic vibration rod (3) to achieve uniform dispersion and microbubble retention, so that the treatment liquid and the surface of the membrane material (11) can be fully in contact. The operation of the heating device (7) is controlled by the controller (15) to provide temperature regulation for the treatment liquid, and the temperature of the treatment liquid is uniformized by the treatment liquid containing microbubbles flowing back to the lower part of the treatment chamber (2) through the water distribution pipe (4) and the ultrasonic vibration rod (3) ultrasonic treatment.

[0054] Example 2 Membrane material roughening treatment system

[0055] A membrane material roughening treatment system comprises 6 treatment units connected in series; each treatment unit comprises at least one of the above-mentioned membrane material roughening treatment devices. The membrane material roughening treatment system is a roughening treatment system for continuously treating polyimide membrane materials; the membrane material roughening treatment system comprises a cleaning unit, a pre-roughening unit, a water washing unit a, a roughening unit a, a roughening unit b, and a water washing unit b which are sequentially arranged in series; the membrane material (11) passes through the membrane material roughening treatment devices in the above-mentioned cleaning unit, the pre-roughening unit, the water washing unit a, the roughening unit a, the roughening unit b, and the water washing unit b in sequence; wherein, in the pre-roughening unit, the number of membrane material roughening treatment devices is 1; in the roughening unit a, the number of membrane material roughening treatment devices is 3; in the roughening unit b, the number of membrane material roughening treatment devices is 6. In the pre-roughening unit, the treatment liquid in the treatment chamber is an aqueous solution containing NaOH, potassium permanganate, and sodium dodecylbenzene sulfonate, and the temperature is 50°C; the treatment liquid in the treatment chamber of the roughening unit a is an aqueous solution of N,N-diethylethylenediamine, and the temperature is 60°C; the treatment liquid in the treatment chamber of the roughening unit b is an aqueous solution of 1,3-propane sultone, and the temperature is 75°C; at a uniform membrane material moving speed, the immersion contact time of the membrane material per unit area in each treatment unit with the treatment liquid is adjusted by adjusting the positions of two (10) rollers. The system is used to realize the continuous roughening process of polyimide, treat the polyimide with a strong base to form a roughening layer, hydrolyze and open the ring in the structure to obtain sodium polyamic acid or polyamic acid, and then use N,N-diethylethylenediamine and 1,3-propane sultone for further treatment to further improve the surface roughening degree.

[0056] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A membrane material roughening treatment device, characterized in that: It includes an impregnation mechanism and an impregnation regulating mechanism; The impregnation mechanism comprises a processing tank (1), a feed roller (5), a discharge roller (6), a plurality of ultrasonic vibration rods (3), a plurality of water distribution pipes (4), a heating device (12), an ultrasonic generator (13), a bubble generator (14), and a controller (15); The inner wall of the processing tank (1) forms a processing chamber (2); The heating device (12) is arranged on the inner wall of the processing tank (1) in the processing chamber (2); The plurality of ultrasonic vibration rods (3) and the plurality of water distribution pipes (4) are horizontally distributed at the lower part of the processing chamber (2), and the plurality of ultrasonic vibration rods (3) are located on the upper side of the plurality of water distribution pipes (4); the plurality of ultrasonic vibration rods (3) are electrically connected to the ultrasonic generator (13), and the plurality of water distribution pipes (4) are connected to the bubble generator (14) via the liquid outlet pipe (16) and the liquid inlet pipe (17); The ultrasonic generator (13), the bubble generator (14), and the controller (15) are arranged outside the treatment tank (1); The feed roller (5) and the discharge roller (6) are respectively fixedly arranged at the upper ends of the two opposite ends of the processing tank (1) along the moving direction of the film material (11); The impregnation adjustment mechanism comprises two horizontal adjustment frames (7) which are symmetrically fixedly arranged at the upper ends of the sides of the treatment tank (1) on both sides of the membrane material moving direction; A plurality of vertical adjustment frames (8) are arranged on a side of each of the horizontal adjustment frames (7) facing the processing chamber (2), and a lower end of each vertical adjustment frame (8) is slidably connected and fixed to the horizontal adjustment frame (7); An adjustment rod (9) is provided on a side of each vertical adjustment frame (8) facing the processing chamber (2), and an upper end of the adjustment rod (9) is slidably connected and fixed to the vertical adjustment frame (8); The adjusting rods (9) on both sides of the processing chamber (2) are symmetrically arranged one by one, an adjusting roller (10) is arranged between each group of symmetrically arranged adjusting rods (9), and both ends of the adjusting roller (10) are rotatably connected and fixed to the lower end of the corresponding adjusting rod (9); The membrane material (11) enters the processing chamber (2) through a feed roller (5), passes through an upper area of ​​a plurality of ultrasonic vibration rods (3) through an adjustment roller (10), and then moves out of the processing chamber (2) through a discharge roller (6).

2. The film material roughening treatment device according to claim 1, characterized in that: One end of the liquid inlet pipe (17) is fixedly connected to the outlet of the bubble generator (14), and the other end of the liquid inlet pipe (17) is connected to one end of the water distribution pipe (4); one end of the liquid outlet pipe (16) is fixedly connected to the inlet of the bubble generator (14), and the other end of the liquid outlet pipe (16) is connected to the middle of the processing chamber (2).

3. The membrane material roughening treatment device according to claim 2, characterized in that: One end of the water distribution pipe (4) is fixed to an inner wall of one side of the treatment tank (1), the liquid inlet pipe (17) and the liquid outlet pipe (16) pass through a tank body of one side of the treatment tank (1), and the outer sides of the liquid inlet pipe (17) and the liquid outlet pipe (16) are sealedly connected to the treatment tank (1).

4. The membrane material roughening treatment device according to claim 1, characterized in that: One end of the ultrasonic vibration rod (3) is fixed on an inner wall of one side of the treatment tank (1).

5. The membrane material roughening treatment device according to claim 1, characterized in that: Among the plurality of water distribution pipes (4), the distance between two adjacent water distribution pipes (4) is 10 to 30 cm.

6. The membrane material roughening treatment device according to claim 1, characterized in that: Among the plurality of ultrasonic vibration rods (3), each ultrasonic vibration rod (3) is arranged on the center line of two adjacent water distribution pipes (4).

7. The membrane material roughening treatment device according to claim 1, characterized in that: The distance between the horizontal plane formed by the plurality of ultrasonic vibration rods (3) and the horizontal plane of the plurality of ultrasonic vibration rods (3) is 5 to 15 cm.

8. The membrane material roughening treatment device according to claim 1, characterized in that: The controller (15) is connected to the feed roller (5), the discharge roller (6), the horizontal adjustment frame (7), the vertical adjustment frame (8), and the adjustment rod (9) through an electric drive transmission; The controller (15) is electrically connected and controlled with the ultrasonic generator (13), the bubble generator (14), and the heating device.

9. A membrane material roughening treatment system, characterized in that: comprising a plurality of processing units connected in series; Each processing unit comprises at least one membrane material roughening processing device according to any one of claims 1 to 8.

10. The membrane material roughening treatment system according to claim 9, characterized in that: The membrane material roughening treatment system is a roughening treatment system for continuously treating polyimide membrane materials; The membrane material roughening treatment system comprises a cleaning unit, a pre-roughening unit, a water washing unit a, a roughening unit a, a roughening unit b, and a water washing unit b which are arranged in series in sequence; The membrane material (11) passes through the membrane material roughening treatment device in the above-mentioned cleaning unit, pre-roughening unit, water washing unit a, roughening unit a, roughening unit b, and water washing unit b in sequence; Wherein, in the pre-roughening unit, the number of the membrane material roughening treatment devices is 1 to 3; In the roughening unit a, the number of the membrane material roughening treatment devices is 1 to 6; In the roughening unit b, the number of the film material roughening treatment devices is 1 to 24.

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