Preparation method of high-temperature-resistant BOPP (biaxially-oriented polypropylene) matte isolating membrane

Abstract

The invention relates to the technical field of isolating membranes, in particular to a preparation method of a high-temperature-resistant BOPP matte isolating membrane which comprises supporting legs and a workbench, the workbench is arranged at the upper ends of the supporting legs, a limiting groove is formed in the workbench, an adjusting mechanism is arranged on the workbench, a support is arranged in the adjusting mechanism, a sliding groove is formed in the support, and a hydraulic rod is arranged on the support. A transverse plate is arranged at the output end of the hydraulic rod, limiting bolts are arranged on the two sides of the transverse plate, a pressing plate is arranged at the bottom end of the transverse plate, an arc-shaped plate is arranged on the pressing plate, a stretching mechanism is arranged in the workbench, a first roller is arranged in the stretching mechanism, a second roller is arranged on one side of the first roller, and clamping assemblies are arranged on the first roller and the second roller. The method is characterized by further comprising the following steps. The method comprises the following steps: S1, melting: during pretreatment, adding raw materials into a melting structure for melting and plasticizing, extruding the plasticized raw materials, stretching an isolating membrane by adopting a stretching mechanism, and pressing the isolating membrane by virtue of an adjusting mechanism.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of isolation films, in particular to a preparation method of a high-temperature-resistant BOPP matte isolation film. BACKGROUND

[0002] The high-temperature-resistant BOPP matte isolation film is an isolation film with high-temperature resistance and matte effect, which is mainly used for blocking high-temperature radiation and relieving the curling and shrinking of a substrate. The high-temperature-resistant BOPP matte isolation film is usually composed of an upper surface layer, a middle core layer and a lower surface layer. The upper surface layer and the lower surface layer are matte layers, and the middle core layer is a polypropylene layer. This structure not only has the functions of high-temperature resistance and isolation, but also has the effect of matte, which can improve the visual softness and grade of the product. In the use process, the high-temperature-resistant layer can block the heat radiation of the isolation film to the high-temperature environment, thereby relieving the curling and shrinking of the substrate caused by the high-temperature environment. In addition, the wear-resistant layer can improve the wear resistance of the isolation film, the waterproof layer can effectively prevent water from adhering to the surface of the isolation film, thereby reducing the probability of product corrosion and damage, and the release layer can make the isolation film be easily torn off, thereby avoiding the adhesion to the surface of the product and being difficult to remove.

[0003] To this end, Chinese application patent No. CN118073770A discloses a preparation method of a composite isolation film, which relates to the technical field of isolation films and comprises the following steps: step one, mixing high-density polyethylene, low-density polyethylene, alkali-free glass fiber, mica powder, antioxidant, plasticizer, grafting agent and pore-forming agent, extruding the mixture through an extruder, and then sending the mixture to a mold for hot pressing to obtain a primary film; step two, mixing ceramic particles, an adhesive, AR glass fiber and a maleic anhydride copolymer resin to obtain a protective coating; and step three, using a coating machine to apply the protective coating on the surface of the porous base film, and then dehumidifying, cooling and winding the coated porous base film. Therefore, the heat shrinkage rate of the isolation film is very low, which makes the influence of the temperature generated by the lithium battery during operation on the isolation film low, thereby avoiding the problem that the isolation film is broken due to shrinkage and causes the short circuit of the positive and negative electrodes of the battery.

[0004] However, the preparation method of the high-temperature-resistant BOPP matte isolation film has the problem that the isolation film needs to be stretched and shaped during the preparation process, and the existing device uses a commonly used stretching mechanism during the stretching process of the isolation film, so that the distance between the stretching processes cannot be adjusted as needed, thereby reducing the practicability of the device.

[0005] Therefore, in order to solve the above problems, a preparation method of a high-temperature-resistant BOPP matte isolation film is provided. SUMMARY

[0006] The application aims to provide a preparation method of high-temperature-resistant BOPP matte isolation film to solve the problem of the preparation method of high-temperature-resistant BOPP matte isolation film in the background art, since the isolation film needs to be stretched and shaped during preparation, and the commonly used stretching mechanism is used in the stretching process of the existing device, so the distance between stretching cannot be adjusted as needed, thereby reducing the practicability of the device.

[0007] To achieve the above-mentioned purpose, the application provides the following technical scheme: a preparation method of high-temperature-resistant BOPP matte isolation film, comprising: a support leg and a workbench, the upper end of the support leg is provided with the workbench, a limiting groove is formed in the workbench, and an adjusting mechanism is arranged on the workbench, a support is arranged in the adjusting mechanism, a sliding groove is formed in the support, a hydraulic rod is arranged on the support, a horizontal plate is arranged at the output end of the hydraulic rod, limiting bolts are arranged on both sides of the horizontal plate, a pressing plate is arranged at the bottom end of the horizontal plate, an arc-shaped plate is arranged on the pressing plate, a stretching mechanism is arranged in the workbench, a first roller is arranged in the stretching mechanism, a second roller is arranged on one side of the first roller, and a clamping assembly is arranged on the first roller and the second roller;

[0008] It is characterized by the following steps:

[0009] S1, melting: during pretreatment, the raw material is added to the melting structure for melting and plasticizing, and the plasticized raw material is extruded;

[0010] S2, melt filtration: during pretreatment, the melted raw material in S1 is added to the filtering structure for filtering work;

[0011] S3, die extrusion: the filtered raw material is delivered to the mold structure for mold shaping;

[0012] S4, shaping: the raw material after die extrusion is delivered to the shaping mold for flow setting work;

[0013] S5, stretching: the shaped material is placed in the device for stretching work;

[0014] S6, cooling and shaping: the raw material after stretching is placed in the shaping structure for cooling and shaping;

[0015] S7, fixed-width edge cutting: the shaped isolation film is placed in the edge cutting structure for edge cutting;

[0016] S8, winding: the treated isolation film is wound;

[0017] S9, slitting: the wound isolation film is placed on the slitting structure for slitting;

[0018] S10, inspection: the treated isolation film is subjected to inspection work, and a stretching mechanism can be used to stretch the isolation film. An adjusting mechanism can be used to tighten the isolation film in the stretching process.

[0019] Preferably, the clamping assembly is provided with a fixed plate, which is fixedly installed on the first roller and the second roller, and an L-shaped plate is fixedly installed on the fixed plate, and a rotating block is arranged on the L-shaped plate. An adjusting mechanism can be used to tighten the isolation film in the stretching process by adjusting the arc-shaped plate in the adjusting mechanism, and a stretching mechanism can be used to adjust the distance between the first roller and the second roller as needed.

[0020] Preferably, the rotating block is fixedly installed on one side of the threaded rod, and the threaded rod passes through the L-shaped plate, and a pressing block is movably installed on one end of the threaded rod. The rotating block drives the threaded rod to rotate, and the pressing block is driven to work by the threaded rod.

[0021] Preferably, the first roller and the second roller are fixedly installed on one side of the sliding block, and the sliding block is slidingly installed in the limiting groove, and a first limiting sleeve is movably installed on one side of the sliding block. The sliding block can be used to support and limit one side of the first roller and the second roller.

[0022] Preferably, the sliding block is provided with a sliding rod, the sliding rod is fixedly installed in the limiting groove, and a limiting block is fixedly installed on one side of the workbench. The limiting block is fixedly installed on one side of the servo motor. The sliding rod can be used to support and limit the sliding block.

[0023] Preferably, the servo motor is rotatably installed on the double-way screw rod through the shaft coupling, one end of the double-way screw rod is rotatably installed on the limiting block, a fixed sleeve is fixedly installed in the middle of the double-way screw rod, a threaded sleeve is threadedly installed on the double-way screw rod, one side of the threaded sleeve is fixedly installed on the first roller and the second roller, and a second limiting sleeve is movably installed on one side of the threaded sleeve. The servo motor drives the double-way screw rod to rotate, and the first roller and the second roller are adjusted in position by the double-way screw rod through the threaded sleeve.

[0024] Preferably, the bracket is fixedly installed on the workbench, the hydraulic rod is fixedly installed in the bracket at the bottom end, the horizontal plate is fixedly installed on the hydraulic rod at the bottom end, and the horizontal plate is slidingly installed in the sliding groove at both ends. The hydraulic rod drives the horizontal plate to move in the bracket sliding groove, and the horizontal plate and the hydraulic rod can be fixed by the limiting bolt.

[0025] Preferably, the limiting bolt is movably installed at both ends of the horizontal plate, the pressing plate is fixedly installed on one side of the horizontal plate, and the arc-shaped plate is fixedly installed on the pressing plate. The horizontal plate drives the pressing plate to work.

[0026] Preferably, the first roller and the second roller are rotatably installed in the workbench, and the workbench is used to support and limit the first roller and the second roller.

[0027] Compared with the prior art, the clamping assembly of the present application can clamp and limit the two ends of the isolation film, the rotating block in the assembly drives the threaded rod to rotate, the threaded rod drives the pressing block to work, and then the pressing block presses and limits the isolation film on the first roller and the second roller, thereby preventing the isolation film on the first roller and the second roller from slipping and deviating.

[0028] The stretching mechanism is provided, which can stretch the isolation film, the servo motor in the mechanism drives the bidirectional screw rod to rotate, the bidirectional screw rod drives the first roller and the second roller to move through the threaded sleeve, in this process, the first limiting sleeve and the second limiting sleeve can limit the two ends of the first roller and the second roller, the sliding block and the sliding rod are in the limiting groove, and then one end of the first roller and the second roller can be supported and limited, that is, the distance between the first roller and the second roller can be adjusted as needed, thereby improving the practicability of the device.

[0029] The adjusting mechanism is provided, which can stretch and press the isolation film, the hydraulic rod in the mechanism drives the cross plate to slide in the sliding groove on the support, in this process, the limiting bolt can limit the cross plate, that is, the cross plate can drive the pressing plate to move, the pressing plate can drive the arc-shaped plate to contact the isolation film, thereby stretching and pressing the isolation film, thereby improving the working efficiency of the device. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a front view schematic diagram of the process flow of the present application;

[0031] Figure 2 It is a front view schematic diagram of the structure of the device body of the present application;

[0032] Figure 3 It is a front view schematic diagram of the structure of the device body when stretching;

[0033] Figure 4 It is a side view schematic diagram of the structure of the limiting groove body;

[0034] Figure 5 It is a front view schematic diagram of the structure of the stretching mechanism of the present application;

[0035] Figure 6 It is a top view schematic diagram of the structure of the workbench body of the present application;

[0036] Figure 7An enlarged schematic view of the structure of the adjusting mechanism of the present application;

[0037] Figure 8 An enlarged schematic view of the structure of the clamping assembly of the present application.

[0038] In the figure: 1, support leg; 2, workbench; 21, limiting groove; 3, stretching mechanism; 31, first roller; 32, second roller; 33, sliding block; 34, first limiting sleeve; 35, sliding rod; 36, limiting block; 37, servo motor; 38, bidirectional screw rod; 39, fixed sleeve; 310, threaded sleeve; 311, second limiting sleeve; 4, clamping assembly; 41, fixed plate; 42, L-shaped plate; 43, rotating block; 44, threaded rod; 45, pressing block; 5, adjusting mechanism; 51, support; 52, sliding groove; 53, hydraulic rod; 54, cross plate; 55, limiting bolt; 56, pressing plate; 57, arc plate. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0040] Please refer to Figures 1-8 An embodiment provided by the present application:

[0041] The servo motor 37 used in the present application is a product that can be directly purchased on the market, and its principle and connection mode are all prior art well known to those skilled in the art, so they will not be described here.

[0042] A preparation method of a high-temperature-resistant BOPP matte isolation film, comprising: support legs 1 and a workbench 2, the upper end of the support leg 1 is provided with the workbench 2, the workbench 2 is provided with a limiting groove 21, and an adjusting mechanism 5 is arranged on the workbench 2, the adjusting mechanism 5 is provided with a support 51, the support 51 is provided with a sliding groove 52, and a hydraulic rod 53 is arranged on the support 51, the output end of the hydraulic rod 53 is provided with a cross plate 54, the two sides of the cross plate 54 are provided with limiting bolts 55, and a pressing plate 56 is arranged at the bottom end of the cross plate 54, the pressing plate 56 is provided with an arc plate 57, a stretching mechanism 3 is arranged in the workbench 2, the stretching mechanism 3 is provided with a first roller 31, one side of the first roller 31 is provided with a second roller 32, and a clamping assembly 4 is arranged on the first roller 31 and the second roller 32.

[0043] characterized in that it further comprises the following steps:

[0044] S1, melting: during pretreatment, the raw material is added to the melting structure for melting and plasticizing work, and the plasticized raw material is extruded;

[0045] S2, melt filtration: during pretreatment, the melted raw material in S1 is added to the filtering structure for filtering work;

[0046] S3, die extrusion: the filtered raw material is transported to the mold structure for mold shaping process;

[0047] S4, setting: the raw material after die extrusion is transported to the setting mold for flow setting work;

[0048] S5, stretching: the set material is placed in the device for stretching work;

[0049] S6, cooling and setting: the raw material after stretching is placed in the setting structure for cooling and setting;

[0050] S7, fixed width trimming: the formed isolation film is placed in the trimming structure for trimming treatment;

[0051] S8, winding: the treated isolation film is wound;

[0052] S9, slitting: the wound isolation film is placed on the slitting structure for slitting work;

[0053] S10, inspection: the treated isolation film is inspected, through the setting of this component, the isolation film can be stretched by the stretching mechanism 3, the rotating block 43 in the clamping assembly 4 drives the threaded rod 44 to rotate, the threaded rod 44 drives the pressing block 45 to limit the isolation film on the first roller 31 and the second roller 32, the bidirectional screw 38 is driven by the servo motor 37 to rotate, the first roller 31 and the second roller 32 are driven by the threaded sleeve 310 to move in the limiting groove 21, this process can be supported and limited by the sliding block 33 and the slide rod 35 on one side of the first roller 31 and the second roller 32, and the first limiting sleeve 34 and the second limiting sleeve 311 can limit the two ends of the first roller 31 and the second roller 32, so that the stretching work can be carried out, the hydraulic rod 53 in the adjusting mechanism 5 drives the cross plate 54 to move in the slide groove 52 on the support 51, the pressing plate 56 is driven by the cross plate 54 to work, and the arc plate 57 is driven by the pressing plate 56 to compress the isolation film.

[0054] Further, the clamping assembly 4 is provided with a fixed plate 41 fixedly installed on the first roller 31 and the second roller 32, and an L-shaped plate 42 is fixedly installed on the fixed plate 41, and a rotating block 43 is arranged on the L-shaped plate 42, and the L-shaped plate 42 is supported and fixed by the fixed plate 41.

[0055] Further, the rotating block 43 is fixedly installed on one side of the L-shaped plate 42, and a threaded rod 44 is arranged on one end of the rotating block 43, and a pressing block 45 is movably installed on one end of the threaded rod 44, and the threaded rod 44 is driven to rotate by the rotating block 43, and the pressing block 45 is driven to work by the threaded rod 44.

[0056] Further, the first roller 31 and the second roller 32 are fixedly installed on one side of a sliding block 33, and the sliding block 33 is slidingly installed in the limiting groove 21, and a first limiting sleeve 34 is movably installed on one side of the sliding block 33, and the first roller 31 and the second roller 32 are supported and limited by the sliding block 33 and the sliding rod 35 installed in the limiting groove 21.

[0057] Further, the sliding block 33 is provided with a sliding rod 35 fixedly installed in the limiting groove 21, and a limiting block 36 is fixedly installed on one side of the workbench 2, and a servo motor 37 is fixedly installed on one side of the limiting block 36, and the servo motor 37 and the bidirectional screw rod 38 are supported and limited by the limiting block 36.

[0058] Further, the servo motor 37 is rotatably installed on one end of the bidirectional screw rod 38 through a shaft coupling, and the limiting block 36 is rotatably installed on one end of the bidirectional screw rod 38, and a fixed sleeve 39 is fixedly installed in the middle of the bidirectional screw rod 38, and a threaded sleeve 310 is threadedly installed on the bidirectional screw rod 38, and the threaded sleeve 310 is fixedly installed on one side of the first roller 31 and the second roller 32, and a second limiting sleeve 311 is movably installed on one side of the threaded sleeve 310, and the bidirectional screw rod 38 is driven to rotate by the servo motor 37, and the first roller 31 and the second roller 32 are driven to move by the bidirectional screw rod 38 through the threaded sleeve 310.

[0059] Further, the bracket 51 is fixedly installed on the workbench 2, the hydraulic rod 53 is fixedly installed at the bottom end of the bracket 51, the cross plate 54 is fixedly installed at the bottom end of the hydraulic rod 53, and the cross plate 54 is slidingly installed at both ends of the sliding groove 52, and the bracket 51 supports and fixes the hydraulic rod 53, and the cross plate 54 is driven to move by the hydraulic rod 53.

[0060] Further, the limiting bolt 55 is movably installed at both ends of the horizontal plate 54, and the pressing plate 56 is fixedly installed on one side of the horizontal plate 54, and the arc-shaped plate 57 is fixedly installed on the pressing plate 56, so that the horizontal plate 54 is limited by the limiting bolt 55, the pressing plate 56 is driven by the horizontal plate 54 to work, and the arc-shaped plate 57 is driven by the pressing plate 56 to work.

[0061] Further, the first roller 31 and the second roller 32 are rotatably installed in the workbench 2, so that the first roller 31 and the second roller 32 are supported and limited by the workbench 2.

[0062] Working principle: Before use, the device can be detected and cleaned, and then powered by the existing power supply, so that the isolation film to be stretched is clamped and limited at both ends by the clamping assembly 4, the threaded rod 44 is driven to rotate by the rotating block 43 in the assembly, the pressing block 45 is driven to work by the threaded rod 44, and then the isolation film on the first roller 31 and the second roller 32 is pressed and limited by the pressing block 45, so that the isolation film on the first roller 31 and the second roller 32 is prevented from slipping and deviating, the stretching mechanism 3 can stretch the isolation film, the bidirectional screw rod 38 is driven to rotate by the servo motor 37 in the mechanism, the first roller 31 and the second roller 32 are driven to move by the threaded sleeve 310 through the bidirectional screw rod 38, the first limiting sleeve 34 and the second limiting sleeve 311 limit both ends of the first roller 31 and the second roller 32 in this process, the sliding block 33 and the sliding rod 35 are in the limiting groove 21, and then one end of the first roller 31 and the second roller 32 is supported and limited, so that the distance between the first roller 31 and the second roller 32 can be adjusted according to needs, the adjusting mechanism 5 can stretch and press the isolation film, the horizontal plate 54 is driven to slide in the sliding groove 52 of the support 51 by the hydraulic rod 52 in the mechanism, the horizontal plate 54 is limited by the limiting bolt 55 in this process, the pressing plate 56 is driven to move by the horizontal plate 54, the arc-shaped plate 57 is driven to contact the isolation film by the pressing plate 56, so that the isolation film is pressed and stretched at the same time, and the working efficiency of the device is improved.

[0063] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form; any person skilled in the art can easily implement the present application according to the drawings and the above description; however, any person skilled in the art can make some changes, modifications and equivalent changes of the above disclosed technical contents without departing from the technical solution of the present application, and the equivalent embodiments of the present application are still within the protection scope of the present application.

Claims

1. A method for preparing a high-temperature resistant BOPP matte release film, comprising: Support leg (1) and worktable (2), the upper end of the support leg (1) is provided with worktable (2), the worktable (2) is provided with limit groove (21), and the worktable (2) is provided with adjustment mechanism (5), the adjustment mechanism (5) is provided with bracket (51), the bracket (51) is provided with slide groove (52), and the bracket (51) is provided with hydraulic rod (53), the output end of the hydraulic rod (53) is provided with horizontal plate (54), the horizontal plate (54) is provided with limit bolts (55) on both sides, and the bottom end of the horizontal plate (54) is provided with pressure plate (56), the pressure plate (56) is provided with arc plate (57), the worktable (2) is provided with tensioning mechanism (3), the tensioning mechanism (3) is provided with first roller (31), the first roller (31) is provided with second roller (32) on one side, and clamping assembly (4) is provided on the first roller (31) and the second roller (32); Its characteristic is that it also includes the following steps: S1. Melting: During pretreatment, the raw material is added into the melting structure for melting and plasticizing, and then the plasticized raw material is extruded. S2, Melt Filtration: During pretreatment, the melted raw material from S1 is added to the filter structure for filtration. S3, Die head extrusion: The filtered raw material is conveyed to the mold structure to carry out the molding process; S4. Shaping: The raw material extruded from the die head is conveyed into the shaping mold for extended flow and shaping. S5. Stretching: The shaped material is placed in this device for stretching. S6. Cooling and Shaping: The raw material is stretched and placed in the shaping structure for cooling and shaping. S7. Fixed-width edge trimming: The formed release film is placed in the edge trimming structure for edge trimming; S8. Winding: The processed release film is wound up. S9. Slitting: The wound-up release film is placed on the slitting structure for slitting. S10. Inspection: Inspect the treated separator membrane.

2. The method for preparing a high-temperature resistant BOPP matte release film according to claim 1, characterized in that: The clamping assembly (4) is provided with a fixing plate (41), which is fixedly installed on the first roller (31) and the second roller (32). An L-shaped plate (42) is fixedly installed on the fixing plate (41), and a rotating block (43) is provided on the L-shaped plate (42).

3. The method for preparing a high-temperature resistant BOPP matte release film according to claim 2, characterized in that: A threaded rod (44) is fixedly installed on one side of the rotating block (43). One end of the threaded rod (44) passes through the L-shaped plate (42), and a pressure block (45) is movably installed at one end of the threaded rod (44).

4. The method for preparing a high-temperature resistant BOPP matte release film according to claim 1, characterized in that: A slider (33) is fixedly installed on one side of the first roller (31) and the second roller (32). The slider (33) is slidably installed in the limiting groove (21), and a first limiting sleeve (34) is movably installed on one side of the slider (33).

5. The method for preparing a high-temperature resistant BOPP matte release film according to claim 4, characterized in that: The slider (33) is provided with a slide rod (35), the slide rod (35) is fixedly installed in the limiting groove (21), and a limiting block (36) is fixedly installed on one side of the worktable (2), and a servo motor (37) is fixedly installed on one side of the limiting block (36).

6. The method for preparing a high-temperature resistant BOPP matte release film according to claim 5, characterized in that: The output end of the servo motor (37) is rotatably mounted with a bidirectional screw (38) via a coupling. A limit block (36) is rotatably mounted at one end of the bidirectional screw (38), and a fixed sleeve (39) is fixedly mounted in the middle of the bidirectional screw (38). A threaded sleeve (310) is threadedly mounted on the bidirectional screw (38). One side of the threaded sleeve (310) is fixedly mounted on the first roller (31) and the second roller (32), and a second limit sleeve (311) is movably mounted on one side of the threaded sleeve (310).

7. The method for preparing a high-temperature resistant BOPP matte release film according to claim 1, characterized in that: The bracket (51) is fixedly installed on the workbench (2), the bottom end of the hydraulic rod (53) is fixedly installed inside the bracket (51), the bottom end of the horizontal plate (54) is fixedly installed on the hydraulic rod (53), and the two ends of the horizontal plate (54) are slidably installed in the slide groove (52).

8. The method for preparing a high-temperature resistant BOPP matte release film according to claim 1, characterized in that: The limiting bolts (55) are movably installed at both ends of the horizontal plate (54), one side of the pressure plate (56) is fixedly installed on the horizontal plate (54), and the arc plate (57) is fixedly installed on the pressure plate (56).

9. The method for preparing a high-temperature resistant BOPP matte release film according to claim 1, characterized in that: The first roller (31) and the second roller (32) are rotatably mounted inside the worktable (2).

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