Release film composite equipment and release film composite production line

Abstract

The invention discloses a release film composite equipment and a release film composite production line, the release film composite equipment comprises a frame; the frame is provided with a first unwinding device, a second unwinding device, an infrared preheating roller, a high-temperature water preheating roller, a composite roller device, a heating system, a cooling roller, a third flattening roller, a trimming mechanism and a winding device; the film on the first unwinding device is preheated by an infrared preheating roller, the base film on the second unwinding device is preheated by a high-temperature water preheating roller, the preheated film and the base film are composited by the composite roller device to obtain a composite film, the composite film bypasses the cooling roller and the third flattening roller, and is trimmed by the trimming mechanism and then sent to the winding device for winding. Aiming at the characteristics of the polyester composite release film, the invention can meet the production needs of the new polyester composite release film, ensure the release effect of the polyester composite release film, and realize the large-scale production of the new composite release film.

Description

Technical Field

[0001] The invention relates to a release film production device, in particular to a release film composite device and a release film composite production line. Background Art

[0002] Release film refers to a film with distinguishable surface. It has no stickiness or slight stickiness when in contact with specific materials under limited conditions. Its main functions include isolation, filling, protection, and easy peeling.

[0003] Polyester release film (PET release film) is a commonly used release film. The base material is PET film. During the preparation process, the base material usually needs to be surface treated, such as coating with silicone release agent, fluorine release agent or plasma treatment, so that it has extremely light and stable release force to different organic pressure-sensitive adhesives; however, since the bonding force between the release film base material and the release agent coated on the release film is generally too small, it is easy to peel off, resulting in poor release effect of the PET release film, short service life, and easy detachment of the coating. In addition, due to the poor high temperature resistance of the isolation agent, it often affects the viscosity change of the release film. In addition, the maximum operating temperature of the PET release film is only 100°C. If it is used at a temperature exceeding this temperature, the material will soften, resulting in the PET release film being unable to function in some high temperature environments and limited in use.

[0004] Based on this, we have developed a new polyester composite release film. Through pretreatment, the surfaces of PET film and PTFE microporous film have higher surface energy, and then they are quickly composited using a composite roller, so as to obtain a polyester composite release film with better release effect and high temperature resistance. However, due to the high restrictions on composite temperature, composite pressure and other conditions during the composite process of the new polyester composite release film, the current film composite equipment on the market is mainly multi-layer co-extrusion equipment, ordinary hot pressing composite equipment and hot melt adhesive hot pressing composite equipment. Among them, the multi-layer co-extrusion equipment uses a screw extruder and a multi-layer co-extrusion die head to directly produce multi-layer composite materials, such as release films, etc. However, this type of equipment is mainly suitable for hot For polymer materials with excellent solubility and fluidity, the equipment die parameters are complex and difficult to debug, and the thickness of the multi-layer composite material finally prepared is difficult to control uniformly; ordinary hot pressing composite equipment uses a pair of hot rollers to stack and unwind the multi-layer materials, and directly composites them through hot pressing of hot rollers. The temperature of such hot rollers is generally within 200℃. This equipment is only applicable to products with low hot melting temperatures, and the composite fastness is difficult to control. Therefore, it is also not suitable for the production of new polyester composite release films; hot melt adhesive hot pressing composite equipment inserts a layer of hot melt adhesive web between the multi-layer composite materials, and then presses them through a pair of hot pressing rollers. This equipment will increase the thickness, quality, and uniformity of the composite material. It is also difficult to be applied to the production of new polyester composite release films.

[0005] Therefore, there is an urgent need for a new release film production equipment to meet the production needs of the new polyester composite release film, which not only ensures the release effect of the polyester composite release film, but also realizes the large-scale production of the new composite release film. Summary of the invention

[0006] In view of the defects existing in the prior art, the purpose of the present invention is to provide a release film composite equipment and a release film production line, which can meet the production needs of new polyester composite release films according to the characteristics of polyester composite release films, ensure the release effect of polyester composite release films, and realize the large-scale production of new composite release films.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A first aspect of the present invention provides a release film composite device, comprising a frame, on which a first unwinding device, a second unwinding device, an infrared preheating roller, a high-temperature water preheating roller, a composite roller device, a heating system, a cooling roller, a third flattening roller, a trimming mechanism and a winding device are provided;

[0009] The composite roller device comprises a hot water rubber pressure roller and an electromagnetic vacuum roller tangent to the hot water rubber pressure roller;

[0010] The heating system provides heat for the high-temperature water preheating roller and the hot water rubber pressure roller;

[0011] The film on the first unwinding device is preheated by an infrared preheating roller, and the base film on the second unwinding device is preheated by a high-temperature water preheating roller. The preheated film and the base film are compounded by a compounding roller device to obtain a composite film. The composite film passes by the cooling roller and the third flattening roller, and is sent to the winding device for winding after being trimmed by the trimming mechanism.

[0012] Preferably, the infrared preheating roller comprises an outer rotor rubber roller and an inner stator infrared inner core arranged in the outer rotor rubber roller; the outer rotor rubber roller is fixed on the adjustment mechanism;

[0013] The adjusting mechanism comprises an upper adjusting screw rod arranged on the frame and a lower adjusting screw rod connected to the outer rotor rubber roller.

[0014] Preferably, the heating system includes a hot water tank, a cold water tank and a mixing water tank connected to the hot water tank and the cold water tank; the hot water tank is electrically heated and is provided with an overflow tank; the cold water tank is provided with an air energy thermostat; the mixing water tank is respectively connected to the high-temperature water preheating roller and the hot water rubber pressure roller.

[0015] Preferably, a circulation channel connected to the heating system is provided inside the hot water rubber pressure roller, and the hot water rubber pressure roller is arranged on the frame through a pressure roller actuator; and / or

[0016] The electromagnetic vacuum roller comprises an inner stator magnetic induction module arranged on the frame and an outer rotor vacuum roller arranged on the inner stator magnetic induction module; negative pressure micropores are evenly distributed on the surface of the outer rotor vacuum roller.

[0017] Preferably, the first unwinding device comprises a first unwinding mechanism, a power roller mechanism and a first flattening roller;

[0018] The first unwinding mechanism is provided with a first unwinding air shaft;

[0019] The power roller mechanism comprises an active rubber roller, a first magnetic powder clutch and a first motor, wherein the first motor drives the active rubber roller to rotate through the first magnetic powder clutch;

[0020] The film on the first unwinding air shaft passes around the active rubber roller and the first flattening roller in sequence, and then is fed into the infrared preheating roller for preheating.

[0021] Preferably, the second unwinding device comprises a second unwinding mechanism, a rubber guide roller and a second flattening roller;

[0022] The second unwinding mechanism is provided with a second unwinding air shaft and a magnetic powder brake; the magnetic powder brake is fixed on the second unwinding air shaft;

[0023] The base film on the second unwinding air shaft passes around the rubber guide roller and the second flattening roller in sequence, and then passes through the high-temperature water preheating roller for preheating.

[0024] Preferably, the release film composite equipment also includes a dust removal and static electricity removal mechanism; the dust removal and static electricity removal mechanism is arranged between the rubber guide roller and the second flattening roller on the second unwinding mechanism; the dust removal and static electricity removal mechanism includes a dust removal roller assembly arranged point-symmetrically and an ion fan arranged on the dust removal roller assembly.

[0025] Preferably, the winding device comprises a winding mechanism and a stainless steel guide roller arranged between the trimming mechanism and the winding mechanism;

[0026] The winding mechanism includes a winding roller, a second magnetic powder clutch and a second motor, and the second motor drives the winding roller to wind through the second magnetic powder clutch.

[0027] Preferably, the release film composite device further comprises an exhaust mechanism disposed above the composite roller device; and / or

[0028] The release film composite equipment further comprises a temperature compensation roller tangent to the hot water rubber pressure roller; the temperature compensation roller is connected to the heating system; and / or

[0029] The release film composite equipment further includes a PLC controller and a first tension sensor, a second tension sensor, a third tension sensor and a temperature sensor connected to the PLC controller.

[0030] A second aspect of the present invention provides a release film composite production line, comprising the release film composite equipment described in the first aspect of the present invention.

[0031] The beneficial effects of the present invention are:

[0032] 1. The release film composite equipment and release film composite production line of the present invention use a high-temperature water preheating roller to preheat the PET film. Preheating prevents the cold PET film from being rapidly heated during composite, thereby better controlling the composite temperature, reducing heat loss during composite, and increasing the composite speed, thereby increasing the equipment capacity;

[0033] 2. The release film composite equipment and release film composite production line of the present invention use infrared heating to preheat the PEFT microporous film, thereby preventing the PEFT microporous film from being stretched and deformed due to rapid heating during composite.

[0034] 3. The release film composite equipment and release film composite production line of the present invention utilize electromagnetic heating to heat the PETF microporous film, and adsorb the PETF microporous film onto the electromagnetic heating vacuum roller by vacuum adsorption, thereby ensuring smooth composite processing and improving composite quality and composite speed;

[0035] 4. The release film composite equipment and release film composite production line of the present invention heat the PET film by circulating hot water in the rubber roller during the composite process, and a circulation flow channel is set inside the rubber roller to transfer the hot water temperature to the surface of the rubber roller more evenly, and the PET film is preheated by the front high-temperature warm water preheating roller, and the rear hot water temperature compensation roller performs temperature compensation to ensure the smooth progress of the composite process;

[0036] 5. The release film composite equipment and release film composite production line of the present invention eliminate the residual heat after the PEFT microporous film and the PET film are composited by arranging a composite cold water roller, thereby ensuring the final quality of the polyester composite release film;

[0037] 6. The release film composite equipment and release film composite production line of the present invention are not only suitable for the newly developed polyester composite release film, but also suitable for the production process of release films after plasma treatment or corona treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0039] Figure 1It is a schematic structural diagram of the release film composite equipment of the present invention. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form.

[0041] Combination Figure 1 As shown, the release film composite equipment of the present invention includes a frame; a first unwinding device, a second unwinding device, an infrared preheating roller 10, a high-temperature water preheating roller 6, a composite roller device, a heating system, a cooling roller, a third flattening roller 53, a trimming mechanism 14 and a winding device are provided on the frame; the film on the first unwinding device is preheated by the infrared preheating roller 10, and the base film on the second unwinding device is preheated by the high-temperature water preheating roller 6. The preheated film and the base film are composited with each other through the composite roller device to obtain a composite film, and the composite film bypasses the cooling roller and the third flattening roller 53, and is trimmed by the trimming mechanism 14 before being sent to the winding device for winding.

[0042] Combination Figure 1 As shown, the first unwinding device includes a first unwinding mechanism 1, a power roller mechanism and a first flattening roller 51; the first unwinding mechanism 1 is provided with a first unwinding air shaft for placing a film roll; the power roller mechanism includes an active rubber roller 9, a first magnetic powder clutch and a first motor, the first motor drives the active rubber roller 9 to rotate through the first magnetic powder clutch, wherein the first magnetic powder clutch is used to control the torsional moment, thereby adjusting the tension, ensuring that the film can be stretched flat, and the film will not be stretched longitudinally due to excessive tension, thereby avoiding material damage. The film on the first unwinding air shaft passes around the active rubber roller 9 and the first flattening roller 51 in turn, and then is fed into the infrared preheating roller 10 for preheating.

[0043] Combination Figure 1 As shown, the second unwinding device includes a second unwinding mechanism 2, a rubber guide roller 3 and a second flattening roller 52; the second unwinding mechanism 2 is used to place a base film with high strength and hard material, so passive unwinding is adopted, and the second unwinding mechanism 2 is provided with a second unwinding air shaft for placing the base film roll and a magnetic powder brake for adjusting the tension of the base film; the magnetic powder brake is fixed on the second unwinding air shaft; the base film on the second unwinding air shaft passes around the rubber guide roller 3 and the second flattening roller 52 in turn, and then is preheated by a high-temperature water preheating roller 6.

[0044] Combination Figure 1As shown, the infrared preheating roller 10 includes an outer rotor rubber roller and an inner stator infrared core disposed inside the outer rotor rubber roller. The infrared preheating roller 10 uses infrared heating to preheat the cold film to a certain temperature before laminating. On the one hand, the film is preheated to avoid rapid heating of the film, which makes the heating temperature difficult to control. On the other hand, the film is prevented from being rapidly cooled, which causes the film to be stretched and then changes in shape. In order to facilitate the adjustment of the heating time of the film, the outer rotor rubber roller is fixed on the adjustment mechanism. The adjustment mechanism includes an upper adjustment screw disposed on the frame and a lower adjustment screw connected to the outer rotor rubber roller. The height of the infrared preheating roller 10 is changed by the upper adjustment screw and the lower adjustment screw, thereby changing the wrapping angle on the electromagnetic vacuum roller 11 when the film is laminated, and then adjusting the heating time of the film.

[0045] Combination Figure 1 As shown, since the new composite release film is very sensitive to temperature, a high-temperature water preheating roller 6 is used to preheat the base film. On the one hand, the cold base film does not need to be rapidly heated during lamination, and the lamination temperature can be better controlled. On the other hand, the heat loss of the composite roller device during lamination is reduced, making the temperature of the composite roller device more stable, thereby improving the composite quality and composite speed, and further increasing the production capacity; the high-temperature water preheating roller 6 is provided with a flow channel connected to the heating system to ensure the preheating temperature;

[0046] Combination Figure 1 As shown, the composite roller device includes a hot water rubber pressure roller 7 and an electromagnetic vacuum roller 11 tangential to the hot water rubber pressure roller 7. A circulating flow channel connected to the heating system is provided inside the hot water rubber pressure roller 7, so that the hot water temperature is more evenly transferred to the pressure roller surface, thereby better controlling the composite temperature; in order to control the lamination accuracy at μ level, high-precision lamination to control the thickness of the composite film, and improve the lamination quality, the hot water rubber pressure roller 7 is fixed to the frame through a pressure roller actuator, wherein the pressure roller actuator adopts an electric cylinder pusher. The electromagnetic vacuum roller 11 includes an inner stator magnetic induction module arranged on the frame and an outer rotor vacuum roller arranged on the inner stator magnetic induction module; the inner stator and outer rotor design is adopted, and as the outer rotor vacuum roller rotates, the surface temperature uniformity of the outer rotor vacuum roller is continuously improved by adjusting the power of the inner stator magnetic induction module, and finally the temperature of the rotating surface of the outer rotor vacuum roller can be controlled within ±0.5°C, which greatly improves the composite quality of the material; negative pressure micropores are evenly distributed on the surface of the outer rotor vacuum roller, and each negative pressure micropore is a negative pressure point, which can smoothly adsorb the film to the surface of the electromagnetic vacuum roller 11, and then the film is smoothly brought in and rotates with the electromagnetic vacuum roller 11 to be composited, thereby improving the composite quality.

[0047] Figure 1The temperature of the release film composite equipment shown in the figure during the preheating and composite process is provided by the infrared preheating roller 10 and the electromagnetic vacuum roller 11 on the one hand, and by the heating system on the other hand. In order to control the surface temperature of the hot water rubber pressure roller 7 to the greatest extent possible, in addition to preheating the high-temperature water preheating roller 6 in the front, a temperature compensation roller 8 connected to the heating system is also placed on the other side of the hot water rubber roller. As the release film composite equipment is running, the hot water rubber pressure roller 7 will bring back more and more heat, causing the temperature to rise continuously. In order to solve the problem of constant composite temperature and maintain the quality of thermal composite, the heating system adopts a three-box structure, including a hot water tank, a cold water tank and a mixing water tank. The hot water tank adopts electric heating and is provided with an overflow tank. The cold water tank is provided with an air energy thermostat. The mixing water tank is used to balance the cold and hot water, and the water is discharged at a constant temperature after the overflow. The mixing water tank is connected to the hot water tank and the cold water tank respectively. The mixing water tank is connected to the high-temperature water preheating roller 6, the hot water rubber pressure roller 7, and the temperature compensation roller 8 respectively; in the initial state, the hot water tank With the assistance of electric heating, the temperature rises quickly. After the water temperature is heated from room temperature to the predetermined temperature, it directly enters the mixing water tank, and then supplies heat to the high-temperature water preheating roller 6, the hot water rubber pressure roller 7, and the temperature compensation roller 8; under normal working conditions, the equipment operates normally, the rollers rotate continuously, the water temperature rises continuously, and the cold water in the cold water tank directly compensates the cold capacity. After the mixing water tank overflows, the water supply temperature is guaranteed to be constant; under extreme working conditions, the equipment runs for a long time, and the cold water in the cold water tank can no longer balance the heat. At this time, the temperature energy thermostat is started to prepare cold water. The cold water in the cold water tank is added to the mixing water tank. After overflow, the water supply temperature is guaranteed to be constant.

[0048] Combination Figure 1 As shown, after the film and the base film are compounded by the static compound roller device, due to the high temperature residual heat, in order to prevent subsequent longitudinal stretching and damage to the quality of the composite film, a cold water roller 13 is added after the compound roller device to eliminate the residual heat of the composite film and ensure product quality.

[0049] Combination Figure 1 As shown, the first flattening roller 51, the second flattening roller 52, and the third flattening roller 53 can all be made of aluminum alloy flattening rollers, which have strong transverse stretching and flattening capabilities, can make the base film evenly stressed, and have a gentle flattening method to ensure that the film does not deform. The inner core shaft is made of aluminum alloy, which makes the flattening roller lighter and has a stronger flattening performance while ensuring strength.

[0050] Combination Figure 1 As shown, the trimming mechanism 14 adopts a shearing pneumatic tool holder to cut the edge of the cooled composite film. On the one hand, the shearing pneumatic tool holder has a simple structure and stable adjustment. On the other hand, the shearing pneumatic tool holder can ensure that the trimming is burr-free and the edge is smooth. In addition, the trimming is stable, without jitter, and more precise.

[0051] Combination Figure 1As shown, the winding device includes a winding mechanism 16 and a stainless steel guide roller 15, and the stainless steel guide roller 15 is arranged between the winding mechanism 16 and the trimming mechanism 14; the winding mechanism 16 includes a winding roller, a second magnetic powder clutch and a second motor, wherein the winding mechanism 16 adopts active winding, and the second motor drives the winding roller to rotate and wind through the second magnetic powder clutch, wherein the magnetic powder clutch is used to control the torsional torque, thereby adjusting the tension, so that the product is wound smoothly and neatly.

[0052] Combination Figure 1 As shown, in order to eliminate the influence of dust on the surface of the base film on the composite quality, the release film composite equipment also includes a dust removal and static electricity removal mechanism 4, which is installed between the rubber guide roller 3 and the second flattening roller 52; the dust removal and static electricity removal mechanism 4 includes two groups of dust removal roller assemblies and an ion fan arranged on the dust removal roller assemblies; wherein the two groups of dust removal roller assemblies are point-symmetrically arranged, and are used to perform dust removal operations on the front and back sides of the base film to remove dust on the front and back sides of the base film during composite; the ion fan is used to eliminate the static electricity that may be generated on the base film during the dust removal operation, so as to prevent the influence of static electricity on the composite quality.

[0053] Combination Figure 1 As shown, the release film composite equipment is also provided with an exhaust mechanism 12, which is installed above the electromagnetic vacuum roller 11 of the composite roller device to reduce the temperature of the release film composite equipment during operation to avoid excessive temperature and affect the composite quality.

[0054] In order to realize automatic control, the release film composite equipment also includes a PLC controller, a tension sensor, a temperature sensor, a driver and a temperature control meter, wherein the PLC controller is respectively connected to the tension sensor, the temperature sensor, the driver and the temperature control meter; the first unwinding air shaft, the second unwinding air shaft and the winding roller shaft are all provided with tension sensors, the first unwinding mechanism 1, the second unwinding mechanism 2, the winding mechanism 16 and the heating mechanism are all provided with drivers, and the infrared preheating roller 10, the high-temperature water preheating roller 6, the hot water rubber pressure roller 7, the electromagnetic vacuum roller 11, the heating system and the cooling roller are all installed with temperature sensors and temperature control meters. Figure 1 As shown, the PLC controller adjusts the first magnetic powder clutch, the second magnetic powder clutch, the magnetic powder brake, the first motor and the second motor through each driver according to the tension information detected by each tension sensor in real time, so as to control the tension of each part within an appropriate range; on the other hand, the PLC controller controls the start and stop of each component by adjusting each temperature control meter according to the temperature information detected by each temperature sensor in real time, so as to control the temperature of the heating system, preheating roller, composite roller device, cooling roller, etc. within the range of preheating temperature ±1°C.

[0055] The above-mentioned release film composite equipment can be used in a release film composite production line, which also includes plasma equipment and heat treatment equipment; when producing polyester composite release film, the PTFE microporous film and the PET base film are treated separately by plasma equipment, and then composited by the release film composite equipment, and then prepared by heat treatment by heat treatment equipment.

[0056] In summary, the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A new type of release film composite equipment for polyester composite release film, characterized in that: It comprises a frame, on which a first unwinding device, a second unwinding device, an infrared preheating roller, a high-temperature water preheating roller, a composite roller device, a heating system, a cooling roller, a third flattening roller, a trimming mechanism and a winding device are arranged; The composite roller device comprises a hot water rubber pressure roller and an electromagnetic vacuum roller tangent to the hot water rubber pressure roller; The heating system provides heat for the high-temperature water preheating roller and the hot water rubber pressure roller; The film on the first unwinding device is preheated by an infrared preheating roller, and the base film on the second unwinding device is preheated by a high-temperature water preheating roller. The preheated film and the base film are compounded by a compounding roller device to obtain a compound film. The compound film passes by a cooling roller and a third flattening roller, and is sent to the winding device for winding after being trimmed by a trimming mechanism. The infrared preheating roller comprises an outer rotor rubber roller and an inner stator infrared inner core arranged in the outer rotor rubber roller; the outer rotor rubber roller is fixed on the adjustment mechanism; The adjusting mechanism comprises an upper adjusting screw rod arranged on the frame and a lower adjusting screw rod connected to the outer rotor rubber roller. The heating system includes a hot water tank, a cold water tank and a mixing water tank connected to the hot water tank and the cold water tank; the hot water tank is electrically heated and is provided with an overflow tank; the cold water tank is provided with an air energy thermostat; the mixing water tank is respectively connected to the high temperature water preheating roller and the hot water rubber pressure roller. The hot water rubber pressure roller is provided with a circulation channel in communication with the heating system, and the hot water rubber pressure roller is arranged on the frame through a pressure roller actuator; The electromagnetic vacuum roller comprises an inner stator magnetic induction module arranged on the frame and an outer rotor vacuum roller arranged on the inner stator magnetic induction module; negative pressure micropores are evenly distributed on the surface of the outer rotor vacuum roller. The second unwinding device comprises a second unwinding mechanism, a rubber guide roller and a second flattening roller; The second unwinding mechanism is provided with a second unwinding air shaft and a magnetic powder brake; the magnetic powder brake is fixed on the second unwinding air shaft; The base film on the second unwinding air shaft passes through the rubber guide roller and the second flattening roller in sequence, and then passes through the high-temperature water preheating roller for preheating. The release film composite equipment also includes a dust removal and static electricity removal mechanism; the dust removal and static electricity removal mechanism is arranged between the rubber guide roller and the second flattening roller on the second unwinding mechanism; the dust removal and static electricity removal mechanism includes a dust removal roller assembly arranged point-symmetrically and an ion fan arranged on the dust removal roller assembly, The release film composite equipment also includes an exhaust mechanism arranged above the composite roller device; The release film composite equipment also includes a temperature compensation roller tangent to the hot water rubber pressure roller; the temperature compensation roller is connected to the heating system; The release film composite equipment also includes a PLC controller and a tension sensor, a temperature sensor, a driver and a temperature control meter connected to the PLC controller.

2. The release film composite equipment of the novel polyester composite release film according to claim 1, characterized in that: The first unwinding device comprises a first unwinding mechanism, a power roller mechanism and a first flattening roller; The first unwinding mechanism is provided with a first unwinding air shaft; The power roller mechanism comprises an active rubber roller, a first magnetic powder clutch and a first motor, wherein the first motor drives the active rubber roller to rotate through the first magnetic powder clutch; The film on the first unwinding air shaft passes around the active rubber roller and the first flattening roller in sequence, and then is fed into the infrared preheating roller for preheating.

3. The release film composite equipment of the novel polyester composite release film according to claim 1, characterized in that: The winding device comprises a winding mechanism and a stainless steel guide roller arranged between the trimming mechanism and the winding mechanism; The winding mechanism includes a winding roller, a second magnetic powder clutch and a second motor; the second motor drives the winding roller to wind through the second magnetic powder clutch.

4. A release film composite production line, characterized in that: A release film composite device comprising the novel polyester composite release film as described in any one of claims 1 to 3.

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