A drying device for release film processing

Abstract

This utility model discloses a drying device for release film processing, including a drying rack, a guide rack, a drying air chamber, and a film airflow drying guide unit. During use, to avoid excessive silicone oil coating on the film surface leading to uneven coating thickness, when the film passes through an arc-shaped baffle, a flexible paddle at the bottom of the baffle blocks excessively thick coatings on the film surface. Excess silicone oil is collected laterally through a collection chamber. Before the surface silicone oil coating, the film is guided and conveyed by two electrically driven rollers. Before entering the coating area, when the film enters between adjacent anti-wrinkle rollers, the anti-wrinkle rollers can be driven to rotate. The adjacent anti-wrinkle rollers, in conjunction with the two electrically driven rollers, achieve film tension, ensuring the film is laid flat and taut during transport, allowing subsequent silicone oil to be sprayed evenly onto the film surface.

Description

Technical Field

[0001] This utility model relates to the field of release film processing and drying technology, specifically a drying device for release film processing. Background Technology

[0002] Release film is a thin film material with a specially treated surface, primarily used to prevent materials from sticking together and to provide protection or isolation. It is widely used in industrial production, especially in adhesive products, composite materials, electronic components, and printing and packaging.

[0003] Release film consists of a substrate, a release agent coating, and a functional layer. The release agent coating is coated with silicone oil or a fluorinated compound to form a smooth layer with low adhesion, controlling peel force. After the release film is coated with silicone oil, it needs to be dried to allow the solvent to evaporate and the silicone oil layer to cure, forming a uniform and stable release surface. Matte release film requires coating the polyester film with silicone oil and then drying it to obtain high cleanliness and release force stability.

[0004] In the prior art, publication number "CN219965475U" discloses a drying device for release film processing, which achieves the effect of drying the release film using circulating hot air. However, in the above-mentioned device and the prior art, during the process of spraying and curing silicone oil on the film surface, the use of circulating hot air for drying easily leads to problems such as inconsistent curing speeds and uneven curing effects between the surface and inner layers of the silicone oil layer; at the same time, wrinkles are easily generated during the film transportation process, resulting in silicone oil accumulation, uneven coating thickness, and the inability to effectively recover excess silicone oil, affecting the quality of the finished release film. Utility Model Content

[0005] The purpose of this invention is to provide a drying device for release film processing, so as to solve the technical problems in the prior art such as inconsistent curing of silicone oil coating inside and outside, easy wrinkling of film, uneven coating thickness, and inability to recover excess silicone oil.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drying device for release film processing, comprising a drying rack, a guide rack, a drying chamber, a film airflow drying guide unit, and a film surface spraying anti-wrinkle guide unit; the guide rack is installed on one side of the drying rack, the drying chamber is installed on both sides of the drying rack, and the film airflow drying guide unit is disposed between adjacent drying chambers for airflow drying and curing of the silicone oil coating applied to the release film surface, assisting in the formation of the silicone oil coating; the film surface spraying anti-wrinkle guide unit is used to achieve film tensioning and anti-wrinkle, smoothing of the silicone oil coating, and recovery of excess silicone oil.

[0007] Preferably, the membrane airflow drying guide unit includes a spraying section, which includes a silicone oil spraying chamber. The silicone oil spraying chamber is installed between adjacent drying racks. A dustproof top cover is installed on the top of the drying rack. An electromagnetic spray valve is connected to the bottom of the silicone oil spraying chamber. Multiple sets of electromagnetic spray valves are set at equal intervals.

[0008] Preferably, the membrane airflow drying guide unit further includes a drying section, which includes an air supply pipeline that is installed through the surface of the drying rack. One end of the air supply pipeline is equipped with a pressurization conduit that is connected to the drying air chamber. One end of the air supply pipeline is equipped with an electromagnetic valve, and air supply nozzles are connected between adjacent electromagnetic valves.

[0009] Preferably, the air supply nozzles are spaced in two groups, with two nozzles in each group. The two groups of air supply nozzles are arranged in parallel, and the membrane passes between the two groups of air supply nozzles.

[0010] Preferably, one set of air supply nozzles has a drying hole at the bottom, and another set of air supply nozzles has a drying hole at the top, forming an upper and lower opposing blowing drying structure, so that the silicone oil coating is cured simultaneously inside and out.

[0011] Preferably, a membrane surface anti-wrinkle guide unit is installed between adjacent guide frames.

[0012] Preferably, the anti-wrinkle guiding unit for coating the film surface includes a guide part, the guide part includes an electrically driven bidirectional guide rail, the electrically driven bidirectional guide rail is embedded in the surface of the guide frame, and electrically driven roller one and electrically driven roller two are respectively installed on the moving end of the electrically driven bidirectional guide rail. Anti-wrinkle pressure rollers are installed on the side of the drying rack near the guide frame, and the anti-wrinkle pressure rollers are arranged vertically in two groups.

[0013] Preferably, the membrane surface anti-wrinkle guiding unit includes a flattening part, the flattening part includes a positioning seat, the positioning seat is installed on the inner wall of the guide frame, a collection bin is provided on the surface of the guide frame near the bottom area of ​​the positioning seat, an arc-shaped baffle is installed between adjacent positioning seats, and a flexible paddle is installed at the bottom of the arc-shaped baffle. The flexible paddle is used to scrape off excess silicone oil on the membrane surface and guide it into the collection bin for recycling.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. During use, during the silicone oil medium spraying process, the membrane is continuously conveyed by the rotation of electric drive roller one and electric drive roller two, and the silicone oil medium flows on the membrane. In order to avoid excessive silicone oil spraying on the membrane surface and resulting in uneven coating thickness, when the membrane passes through the arc-shaped baffle, the flexible paddle at the bottom of the arc-shaped baffle will scrape and block the excessive coating on the membrane surface, and the excess silicone oil medium will be collected and recycled laterally through the collection bin to ensure uniform coating.

[0016] 2. During use, before the surface silicone oil medium is sprayed onto the membrane, the membrane is guided and conveyed by electrically driven roller one and electrically driven roller two. To avoid wrinkles in the membrane during conveying and the accumulation of silicone oil, the membrane enters between adjacent anti-wrinkle rollers before entering the spraying area. By driving the anti-wrinkle rollers to rotate, the adjacent anti-wrinkle rollers, together with electrically driven roller one and electrically driven roller two, achieve membrane tension, so that the membrane remains flat and taut during conveying, allowing the subsequent silicone oil medium to be sprayed evenly on the membrane surface.

[0017] 3. In use, this utility model adopts an opposing air jet structure with two sets of air supply nozzles, one set drying from the bottom up and the other set drying from the top down, so that the silicone oil coating can be cured synchronously inside and out, solving the problem of inconsistent curing between the surface layer and the inner layer, and improving the stability of the coating and the quality of the release film product. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0019] Figure 2 This is a schematic diagram of the drying air chamber in this utility model;

[0020] Figure 3 This is a schematic diagram of the positioning seat in this utility model;

[0021] Figure 4 This is a schematic diagram of the arc-shaped baffle portion in this utility model;

[0022] Figure 5 This is a schematic diagram of the electric drive roller one and the electric drive roller two in this utility model;

[0023] Figure 6 This is a schematic diagram of the electric drive bidirectional guide rail part in this utility model;

[0024] Figure 7 This is a schematic diagram of the silicone oil spray chamber and electromagnetic spray valve in this utility model.

[0025] In the diagram: 1. Drying rack; 2. Guide frame; 21. Electrically driven bidirectional guide rail; 22. Electrically driven roller one; 23. Electrically driven roller two; 3. Drying air chamber; 31. Pressurization duct; 32. Air supply pipeline; 33. Solenoid valve; 34. Air supply nozzle; 35. Drying hole; 4. Anti-wrinkle pressure roller; 6. Dustproof top cover; 7. Silicone oil spray chamber; 71. Solenoid spray valve; 8. Positioning seat; 81. Arc-shaped baffle; 82. Flexible paddle; 83. Collection chamber. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please refer to Figures 1-7. This utility model provides a technical solution:

[0028] Example 1:

[0029] A drying device for release film processing includes a drying rack 1, a guide rack 2, a drying air chamber 3, and a film airflow drying guide unit. The guide rack 2 is installed on one side of the drying rack 1, the drying air chamber 3 is installed on both sides of the drying rack 1, and the film airflow drying guide unit is arranged between adjacent drying air chambers 3 for airflow drying and curing of the silicone oil coating applied to the surface of the release film, thereby assisting in the formation of the silicone oil coating.

[0030] The membrane airflow drying guide unit includes a spraying section, which includes a silicone oil spraying chamber 7. The silicone oil spraying chamber 7 is installed between adjacent drying racks 1. A dustproof top cover 6 is installed on the top of the drying rack 1. An electromagnetic spray valve 71 is connected to the bottom of the silicone oil spraying chamber 7. Multiple sets of electromagnetic spray valves 71 are set at equal intervals.

[0031] The membrane airflow drying guide unit also includes a drying section, which includes an air supply pipe 32. The air supply pipe 32 is installed through the surface of the drying rack 1. A pressurization conduit 31 is installed at one end of the air supply pipe 32. The pressurization conduit 31 is connected to the drying air chamber 3. An electromagnetic valve 33 is installed at one end of the air supply pipe 32. An air supply nozzle 34 is installed between adjacent electromagnetic valves 33.

[0032] The air supply nozzles 34 are set in two groups, with two nozzles in each group. The two groups of air supply nozzles 34 are arranged in parallel, and the membrane passes through the space between the two groups of air supply nozzles 34.

[0033] One set of air supply nozzles 34 has a drying hole 35 at the bottom, and another set of air supply nozzles 34 has a drying hole 35 at the top.

[0034] In this embodiment, the heat at the bottom of the membrane is conducted through the membrane and the curing layer on the surface of the membrane for heat conduction, drying and curing. The surface of the membrane is exposed to the dry gas ejected from another set of air supply nozzles 34. The heat at the top of the membrane is directly blown onto the surface of the curing layer on the membrane for heat conduction, drying and curing. This allows for simultaneous internal and external curing and molding of the curing layer, ensuring the curing effect of the membrane surface.

[0035] Example 2:

[0036] Based on Embodiment 1, this embodiment takes into account that before the membrane is coated with silicone oil medium, the membrane is guided and transported by electrically driven roller 1 22 and electrically driven roller 23. If wrinkles are generated in the membrane during the transport process, silicone oil medium will accumulate in the wrinkles on the surface of the membrane, which will result in uneven thickness of the silicone oil layer after curing. Therefore, this embodiment is provided with a membrane surface coating anti-wrinkle guiding unit to avoid the above-mentioned problems.

[0037] A membrane surface anti-wrinkle guide unit is installed between adjacent guide frames 2.

[0038] The anti-wrinkle guiding unit for coating the film surface includes a guiding part, which includes an electrically driven bidirectional guide rail 21. The electrically driven bidirectional guide rail 21 is embedded in the surface of the guide frame 2. An electrically driven roller 1 22 and an electrically driven roller 23 are respectively installed on the moving end of the electrically driven bidirectional guide rail 21. An anti-wrinkle pressure roller 4 is installed on the side of the drying rack 1 near the guide frame 2. The anti-wrinkle pressure roller 4 is arranged vertically in two sets.

[0039] The anti-wrinkle guiding unit for the membrane surface spraying includes a flattening part, which includes a positioning seat 8. The positioning seat 8 is installed on the inner wall of the guide frame 2. A collection chamber 83 is provided on the surface of the guide frame 2 near the bottom area of ​​the positioning seat 8. An arc-shaped baffle 81 is installed between adjacent positioning seats 8. A flexible paddle 82 is installed at the bottom of the arc-shaped baffle 81.

[0040] In this embodiment, the membrane is rotated and conveyed by the electric drive roller 22 and the electric drive roller 23. The silicone oil medium accumulates on the membrane. In order to avoid excessive coating thickness due to excessive spraying of silicone oil medium on the surface of the membrane, when the membrane passes through the arc-shaped baffle 81, the flexible paddle 82 at the bottom of the arc-shaped baffle 81 will block the excessive coating on the surface of the membrane and collect the excess silicone oil medium laterally through the collection chamber 83.

[0041] Working principle: The operator inserts the membrane to be processed between the electric drive roller 1 22 and the electric drive roller 23. By controlling the rotation of the electric drive roller 1 22 and the electric drive roller 23, the membrane is smoothly transported into the spraying and drying area. When the membrane enters the spraying area, it can be partially supplied to the electromagnetic spray valve 71 through the silicone oil spray chamber 7, and the silicone oil medium is sprayed onto the surface of the membrane through the electromagnetic spray valve 71. During the spraying of the silicone oil medium, the membrane is continuously transported by the rotation of the electric drive roller 1 22 and the electric drive roller 23. The silicone oil medium accumulates on the membrane. In order to avoid excessive silicone oil medium spraying on the surface of the membrane, resulting in uneven coating thickness, when the membrane passes through the arc-shaped baffle 81, the flexible paddle 82 at the bottom of the arc-shaped baffle 81 will block the excessive coating on the surface of the membrane, and the excess silicone oil medium will be collected laterally through the collection chamber 83.

[0042] Before the membrane is coated with silicone oil medium, the membrane is guided and conveyed by electrically driven roller 1 22 and electrically driven roller 2 23. In order to avoid wrinkles in the membrane during the conveying process, which would cause silicone oil medium to accumulate in the wrinkles on the surface of the membrane, the membrane is driven to rotate between adjacent anti-wrinkle rollers 4 before entering the spraying area. The adjacent anti-wrinkle rollers 4, together with electrically driven roller 1 22 and electrically driven roller 2 23, can achieve tension of the membrane, so that the membrane is kept flat and taut during the conveying process, so that the subsequent silicone oil medium can be sprayed evenly on the surface of the membrane.

[0043] After the silicone oil medium is uniformly sprayed onto the surface of the membrane, the silicone oil coating on the surface of the membrane needs to be cured quickly. At this time, the membrane is conveyed into the drying and curing area by the electric drive roller 22, the electric drive roller 23 and the anti-wrinkle pressure roller 4. The bottom of the membrane will be sprayed with dry gas from a set of air supply nozzles 34. The heat from the bottom of the membrane will be conducted through the membrane and the inside of the curing layer on the surface of the membrane for heat conduction and drying curing. The surface of the membrane will be sprayed with dry gas from another set of air supply nozzles 34. The heat from the top of the membrane will be directly sprayed onto the surface of the curing layer on the surface of the membrane for heat conduction and drying curing. This will ensure that the curing layer on the surface of the membrane is cured and formed simultaneously from the inside and outside, thus ensuring the curing effect of the membrane surface.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drying apparatus for processing release film, characterized in that: The device includes a drying rack (1), a guide rack (2), a drying air chamber (3), a membrane airflow drying guide unit, and a membrane surface spraying anti-wrinkle guide unit; the guide rack (2) is installed on one side of the drying rack (1), and the drying air chamber (3) is installed on both sides of the drying rack (1); the membrane airflow drying guide unit includes a spraying section and a drying section, the spraying section includes a silicone oil spray chamber (7), the silicone oil spray chamber (7) is installed between adjacent drying racks (1), and the bottom of the silicone oil spray chamber (7) is connected to a... The drying rack (1) is equipped with multiple sets of equally spaced electromagnetic spray valves (71), and a dustproof top cover (6) is installed on the top of the drying rack (1). The drying section includes an air supply pipeline (32), which is installed through the surface of the drying rack (1). The air supply pipeline (32) is connected to the drying air chamber (3) through a pressurization conduit (31). The air supply pipeline (32) is equipped with electromagnetic valves (33), and air supply nozzles (34) are connected between adjacent electromagnetic valves (33). The nozzles (34) are spaced in two groups, one above the other. The membrane passes between the two groups of air supply nozzles (34). One group of air supply nozzles (34) has a drying hole (35) at the bottom, and the other group of air supply nozzles (34) has a drying hole (35) at the top, forming an upper and lower opposing blowing drying structure. The membrane surface spraying anti-wrinkle guiding unit is installed between adjacent guide frames (2), including a guiding part and a flat part. The guiding part includes an electrically driven bidirectional guide rail (21) embedded in the surface of the guide frame (2). 21) The mobile end is equipped with an electric drive roller 1 (22) and an electric drive roller 2 (23) respectively. The drying rack (1) is equipped with two sets of anti-wrinkle pressure rollers (4) arranged vertically on the side near the guide frame (2). The flat part includes a positioning seat (8) installed on the inner wall of the guide frame (2). An arc-shaped baffle (81) is installed between adjacent positioning seats (8). A flexible paddle (82) is installed at the bottom of the arc-shaped baffle (81). A collection bin (83) is provided in the bottom area of ​​the positioning seat (8) of the guide frame (2).

2. The drying apparatus for release film processing according to claim 1, characterized in that: Each group of air supply nozzles (34) is configured with two nozzles, with the upper and lower groups of air supply nozzles (34) arranged in parallel.

3. The drying apparatus for release film processing according to claim 1, characterized in that: The drying air chambers (3) are symmetrically arranged on both sides of the drying rack (1) to provide a drying air source for top and bottom blowing drying.

4. The drying apparatus for release film processing according to claim 1, characterized in that: The distance between the electric drive roller 1 (22) and the electric drive roller 2 (23) can be adjusted by the electric drive bidirectional guide rail (21), and together with the anti-wrinkle pressure roller (4), the film body is tensioned and wrinkle-proofed.

5. A drying apparatus for release film processing according to claim 1, characterized in that: The flexible paddle (82) makes flexible contact with the surface of the membrane to scrape off excess silicone oil and guide it into the collection bin (83) for recycling.

6. The drying apparatus for release film processing according to claim 1, characterized in that: The upper and lower sets of air supply nozzles (34) spray air in opposite directions, so that the silicone oil coating on the release film surface can be dried and cured simultaneously inside and out.

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