Manufacturing method of multi-layer polymer functional film

Abstract

The invention discloses a manufacturing method of a multilayer polymer functional film, which is characterized by comprising the following specific steps: S1, laminating a modified PVDF (Polyvinylidene Fluoride) film, a modified PMMA (Polymethyl Methacrylate) film and a flame-retardant PVC (Polyvinyl Chloride) film through a three-layer laminating machine, and sequentially laminating the PVDF film, the PMMA film and the flame-retardant PVC film from top to bottom to obtain a semi-finished product film; s2, carrying out hardening treatment on the surface of the semi-finished product film to form a hardening treatment layer; s3, uniformly coating a layer of non-drying adhesive on the bottom surface of the semi-finished product film to form an adhesive layer; and S4, attaching release paper to the adhesive layer of the semi-finished product film, pressing, cooling and rolling to obtain the multi-layer polymer functional film.

Description

Technical Field

[0001] The invention belongs to the technical field of laminating machines, and in particular relates to a three-layer laminating machine. Background Art

[0002] Polymer functional membranes are thin film materials with specific functions and properties, usually made of polymers through specific processing techniques. These functional membranes have a wide range of applications in various fields, such as electronics, energy, biomedicine, environmental protection, etc.

[0003] In the context of the rapid development of science and technology today, polymer functional membranes, as an important material, are widely used in various fields. However, most of these polymer functional membranes currently adopt a relatively simple single-layer or double-layer structure design. This single structure to a certain extent limits the improvement of their overall performance; due to the lack of multi-layer composite structure, the performance of these membrane materials in aspects such as mechanical strength and durability is often unsatisfactory.

[0004] To this end, we proposed a method for preparing a multilayer polymer functional film to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to propose a method for preparing a multilayer polymer functional film.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a method for preparing a multi-layer polymer functional film, characterized in that it includes the following specific steps: S1, laminating a modified PVDF film, a modified PMMA film and a flame-retardant PVC film by a three-layer laminating machine, which are PVDF film, PMMA film and flame-retardant PVC film from top to bottom, to obtain a semi-finished film; S2, hardening the surface of the semi-finished film to form a hardening layer; S3, uniformly coating a layer of self-adhesive on the bottom surface of the semi-finished film to form an adhesive layer; S4, attaching release paper to the adhesive layer of the semi-finished film, pressing and cooling it, and then rolling it up to obtain a multi-layer polymer functional film.

[0007] The bonding in step S1 is performed by thermal bonding.

[0008] The release paper in step S4 is a slotted release paper.

[0009] The three-layer laminating machine in step S1 includes a laminating machine body and two rollers, wherein the two rollers are respectively arranged in the laminating machine body, a cavity is opened in the inner wall of one side of the laminating machine body, an electric push rod is installed in the cavity, an output end of the electric push rod is fixedly connected to a vertical pole, two fixed plates are fixedly connected to the side wall of the cavity, clamps are installed at one end of the two fixed plates facing the rollers, the rollers are arranged in the clamps, two ends of the vertical poles are respectively extended into the side walls of the two fixed plates, a working cavity is opened in the fixed plate, and a control mechanism for controlling the clamps is installed in the working cavity.

[0010] Preferably, the clamping jaw includes a front claw, a connecting rod, a rear claw and a connecting block, the connecting rod is fixedly connected to the side wall of the front claw facing the rear claw, the side wall of the rear claw is provided with a through hole, the end of the connecting rod away from the front claw passes through the through hole and the side wall of the working chamber, the connecting block is fixedly connected to the side wall of the rear claw facing away from the front claw, the end of the connecting block away from the rear claw passes through the side wall of the working chamber, the front claw and the rear claw are both arc-shaped in design, and the roller is jointly arranged on the front claw and the rear claw.

[0011] Preferably, a transverse groove is formed on the top wall of one of the fixing plates, and a transverse groove is also formed on the bottom wall of the other fixing plate, wherein the transverse groove is connected to the working cavity, and two ends of the vertical rod pass through the two transverse grooves respectively.

[0012] Preferably, the control mechanism includes a top rack, a center gear and a bottom rack, the side wall of the top rack is fixedly connected to the side wall of the vertical pole, one end of the top rack is fixedly connected to the side wall of the connecting block, the center gear is rotatably connected to the side wall of the working chamber, the bottom rack is slidably connected to the bottom wall of the working chamber, the top rack is meshed with the center gear, the bottom rack is meshed with the other side of the center gear, and the bottom rack is fixedly connected to the end of the connecting rod away from the front claw.

[0013] Preferably, the connecting rod is located below the connecting block, and the width of the connecting block is greater than the width of the connecting rod.

[0014] Preferably, the bottom rack is located below the connecting block, and the top rack is fixedly connected to the upper side wall of the connecting block.

[0015] In summary, the technical effects and advantages of the present invention are as follows: 1. The modified PVDF film, the modified PMMA film and the flame-retardant PVC film are laminated by a three-layer laminating machine, thereby giving them the comprehensive characteristics of the three, and ensuring that they can be reliably connected and not easily peeled off. At the same time, the production is also relatively convenient.

[0016] 2. By setting a clamping claw that can be opened and closed in the laminating machine body, the staff can control the electric push rod to shorten, which will cause the vertical rod to move backward, and then the top rack will drive the bottom rack to move together. The front claw and the rear claw will move under the drive of the two racks, making it convenient for the staff to take out the roller. In daily use, the arc-shaped front claw and rear claw can also prevent the roller from shaking accidentally during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure inside the cavity of the present invention; Figure 3 It is a schematic diagram of the structural connection of the control mechanism in the present invention.

[0018] In the figure: 1. Laminating machine body; 2. Roller; 3. Electric push rod; 4. Vertical rod; 5. Fixed plate; 6. Front claw; 7. Connecting rod; 8. Rear claw; 9. Connecting block; 10. Perforation; 11. Horizontal groove; 12. Top rack; 13. Center gear; 14. Bottom rack. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1 - Figure 3 As shown, the method for preparing the multi-layer polymer functional film includes the following specific steps: S1, laminating the modified PVDF film, the modified PMMA film and the flame-retardant PVC film by a three-layer laminating machine, which are PVDF film, PMMA film and flame-retardant PVC film from top to bottom, to obtain a semi-finished film; S2, hardening the surface of the semi-finished film to form a hardening layer; S3, uniformly coating a layer of self-adhesive on the bottom surface of the semi-finished film to form an adhesive layer; S4, attaching release paper to the adhesive layer of the semi-finished film, pressing and cooling, and then rolling to obtain a multi-layer polymer functional film; in this embodiment, the modified PVDF film, the modified PMMA film and the flame-retardant PVC film can be existing products available on the market.

[0021] The bonding in step S1 is performed by thermal bonding.

[0022] The release paper in step S4 is a slotted release paper.

[0023] Using the three-layer laminating machine, the simultaneous lamination of PVDF film, PMMA film and flame-retardant PVC film can be completed at one time.

[0024] The three-layer laminating machine comprises a laminating machine body 1 and two rollers 2. The two rollers 2 are respectively arranged in the laminating machine body 1. A cavity is opened on the inner wall of one side of the laminating machine body 1. An electric push rod 3 is installed in the cavity. Figure 2 It can be seen that the electric push rod 3 is arranged horizontally, the output end of the electric push rod 3 is fixedly connected to the vertical rod 4, the side wall of the cavity is fixedly connected to two fixed plates 5, the two fixed plates 5 are parallel to each other, and the electric push rod 3 and the two fixed plates 5 are also parallel to each other.

[0025] The two fixed plates 5 are provided with clamping claws at one end facing the roller 2, and the roller 2 is arranged in the clamping claws. The clamping claws include a front claw 6, a connecting rod 7, a rear claw 8 and a connecting block 9. The connecting rod 7 is fixedly connected to the side wall of the front claw 6 facing the rear claw 8. A through hole 10 is provided on the side wall of the rear claw 8. The end of the connecting rod 7 away from the front claw 6 passes through the through hole 10 and the side wall of the working chamber. The connecting block 9 is fixedly connected to the side wall of the rear claw 8 facing away from the front claw 6. The end of the connecting block 9 away from the rear claw 8 passes through the side wall of the working chamber. The connecting rod 7 is located below the connecting block 9. The width of the connecting block 9 is greater than the width of the connecting rod 7. The front claw 6 and the rear claw 8 are both arc-shaped in design. The front claw 6 and the rear claw 8 can together form a three-quarter circle. The roller 2 is jointly arranged on the front claw 6 and the rear claw 8. Therefore, when the front claw 6 and the rear claw 8 are closed, that is, the connecting rod 7 completely passes through the through hole 10 and the front claw 6 and the rear claw 8 are completely in contact, the roller 2 will be restricted between the front claw 6 and the rear claw 8. At the same time, due to the rotating rings arranged at both ends of the roller 2, the closing of the front claw 6 and the rear claw 8 will not affect the normal rotation of the roller 2.

[0026] A transverse groove 11 is formed on the top wall of one of the fixing plates 5 , and a transverse groove 11 is also formed on the bottom wall of the other fixing plate 5 . The transverse groove 11 is connected to the working chamber, and two ends of the vertical rod 4 pass through the two transverse grooves 11 respectively.

[0027] The two ends of the vertical rod 4 extend into the side walls of the two fixed plates 5 respectively. A working chamber is opened in the fixed plate 5. A control mechanism for controlling the clamp is installed in the working chamber. The control mechanism includes a top rack 12, a central gear 13 and a bottom rack 14. The side wall of the top rack 12 is fixedly connected to the side wall of the vertical rod 4. One end of the top rack 12 is fixedly connected to the side wall of the connecting block 9. The two fixed plates 5 are respectively located at the two ends of the vertical rod 4. Therefore, one end of the vertical rod 4 will be fixedly connected to the top of the top rack 12, and the other end will be fixedly connected to the bottom of the other top rack 12, which will not affect With normal movement of the top rack 12, the center gear 13 is rotationally connected to the side wall of the working chamber, the bottom rack 14 is slidingly connected to the bottom wall of the working chamber, the top rack 12 is fixedly connected to the top wall of the working chamber, the top rack 12 is meshed with the center gear 13, the bottom rack 14 is meshed with the other side of the center gear 13, the bottom rack 14 is fixedly connected to the end of the connecting rod 7 away from the front claw 6, the bottom rack 14 is located below the connecting block 9, and the top rack 12 is fixedly connected to the upper side wall of the connecting block 9, thereby ensuring the distance between the top rack 12 and the bottom rack 14.

[0028] The working principle is as follows: when the roller 2 needs to be inspected, the staff can drive the electric push rod 3 to shorten, and the vertical rod 4 fixedly connected to the electric push rod 3 will move backward. The vertical rod 4 moving in the horizontal groove 11 will drive the top rack 12 to move backward together. Driven by the center gear 13, the bottom rack 14 moves forward, and the connecting block 9 fixedly connected to the top rack 12 will drive the rear claw 8 to move backward together. At the same time, the bottom rack 14 will also drive the connecting rod 7 and the front claw 6 to move forward together, thereby relaxing the restriction on the roller 2, making it convenient for the staff to take out the roller 2.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for preparing a multilayer polymer functional film, characterized in that: The method comprises the following specific steps: S1, laminating a modified PVDF film, a modified PMMA film and a flame-retardant PVC film by a three-layer laminating machine, wherein the films are PVDF film, PMMA film and flame-retardant PVC film from top to bottom, to obtain a semi-finished film; S2, hardening the surface of the semi-finished film to form a hardening layer; S3, evenly coating a layer of self-adhesive on the bottom surface of the semi-finished film to form an adhesive layer; S4, attaching release paper to the adhesive layer of the semi-finished film, pressing and cooling, and then rolling up to obtain a multi-layer polymer functional film.

2. The method for preparing a multilayer polymer functional film according to claim 1, characterized in that: The bonding in step S1 is performed by thermal bonding.

3. The method for preparing a multilayer polymer functional film according to claim 1, characterized in that: The release paper in step S4 is a slotted release paper.

4. The method for preparing a multilayer polymer functional film according to claim 1, characterized in that: The three-layer laminating machine in step S1 comprises a laminating machine body (1) and two rollers (2), wherein the two rollers (2) are respectively arranged in the laminating machine body (1), a cavity is opened on the inner wall of one side of the laminating machine body (1), an electric push rod (3) is arranged in the cavity, an output end of the electric push rod (3) is fixedly connected to a vertical rod (4), two fixed plates (5) are fixedly connected to the side wall of the cavity, a clamping claw is arranged on one end of the two fixed plates (5) facing the rollers (2), the rollers (2) are arranged in the clamping claw, and the two ends of the vertical rod (4) respectively extend into the side walls of the two fixed plates (5), a working cavity is opened in the fixed plate (5), and a control mechanism for controlling the clamping claw is arranged in the working cavity.

5. The method for preparing a multilayer polymer functional film according to claim 4, characterized in that: The clamp comprises a front claw (6), a connecting rod (7), a rear claw (8) and a connecting block (9); the connecting rod (7) is fixedly connected to the side wall of the front claw (6) facing the rear claw (8); a through hole (10) is provided on the side wall of the rear claw (8); the end of the connecting rod (7) away from the front claw (6) passes through the through hole (10) and the side wall of the working chamber; the connecting block (9) is fixedly connected to the side wall of the rear claw (8) facing away from the front claw (6); the end of the connecting block (9) away from the rear claw (8) passes through the side wall of the working chamber; the front claw (6) and the rear claw (8) are both of arc-shaped design; the roller (2) is jointly arranged on the front claw (6) and the rear claw (8).

6. The method for preparing a multilayer polymer functional film according to claim 5, characterized in that: A transverse groove (11) is provided on the top wall of one of the fixing plates (5), and a transverse groove (11) is also provided on the bottom wall of the other fixing plate (5). The transverse groove (11) is connected to the working chamber, and the two ends of the vertical rod (4) pass through the two transverse grooves (11) respectively.

7. The method for preparing a multilayer polymer functional film according to claim 3, characterized in that: The control mechanism comprises a top rack (12), a center gear (13) and a bottom rack (14); the side wall of the top rack (12) is fixedly connected to the side wall of the vertical rod (4); one end of the top rack (12) is fixedly connected to the side wall of the connecting block (9); the center gear (13) is rotatably connected to the side wall of the working chamber; the bottom rack (14) is slidably connected to the bottom wall of the working chamber; the top rack (12) is meshed with the center gear (13); the bottom rack (14) is meshed with the other side of the center gear (13); and the bottom rack (14) is fixedly connected to one end of the connecting rod (7) away from the front claw (6).

8. The method for preparing a multilayer polymer functional film according to claim 4, characterized in that: The connecting rod (7) is located below the connecting block (9), and the width of the connecting block (9) is greater than the width of the connecting rod (7).

9. The method for preparing a multilayer polymer functional film according to claim 4, characterized in that: The bottom rack (14) is located below the connecting block (9), and the top rack (12) is fixedly connected to the upper side wall of the connecting block (9).

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