Synchronous Roller Forming of Dual Release Films with Differential Curing Process and Equipment for AB Component Silicone OCA

Abstract

This invention discloses a differentiated curing process and equipment for synchronous roll forming of AB-component silicone OCA using dual release films. The curing equipment includes a frame, a feeding assembly, a composite roller assembly, a differentiated temperature control module, and a winding mechanism. The feeding assembly, composite roller assembly, differentiated temperature control module, and winding mechanism are sequentially arranged and installed on the frame. The differentiated temperature control module includes a cooling air device located on the upper side of the material channel and an infrared preheating device located on the lower side of the material channel. This invention is fully compatible with AB-component silicone OCA, with a curing temperature close to the conventional process of around 120℃. The synchronous roll forming of dual release films covers a full thickness of 50-1200μm. The upper cooling and lower preheating design allows the upper film side adhesive layer to quickly set, reducing the interfacial adhesion to 3-5gf / in. After preheating, the lower film side adhesive layer's adhesion to the film increases to 8-14gf / in, a gradient of 5-9gf / in. This results in an upper film that is easy to peel off without adhesive residue, and even thick adhesive layers do not adhere.

Description

Technical Field

[0001] This invention discloses an OCA curing process, particularly a differentiated curing process and equipment for AB component silicone OCA formed by simultaneous roll forming of dual release films, belonging to the field of optical adhesive preparation technology. Background Technology

[0002] AB-component silicone OCA is widely used in electronic displays and optical component bonding because it does not require high-temperature melting, has flexible proportions, provides stable adhesion after curing, and can be adapted to the conventional curing process of silicone rubber at around 120℃. The core molding method is to premix the AB adhesive and then simultaneously pass it through the upper and lower release films for clamping and shaping. The thickness can be flexibly adjusted from 50-1200μm to meet the needs of different scenarios.

[0003] The core pain points in the existing curing process are as follows: (1) For easy peeling in the later stage, the release film adopts low release force release film. There is no difference in the bonding force between the upper and lower release films and the AB glue curing interface, and there is no peeling gradient. It is difficult to peel after curing. Thick glue film (glue layer thickness > 500μm) is easy to stick and tear, and thin glue film is easy to carry glue; (2) AB glue (silicone rubber system) needs to be cured and crosslinked at about 120℃. Traditional uniform heating is easy to cause the film material to slide. The thickness deviation of thick glue film is large (usually > ±5μm), and thin glue film is easy to wrinkle. Moreover, the upper and lower interfaces are heated uniformly, and it is impossible to build a peeling force gradient.

[0004] Therefore, the industry urgently needs a curing process and equipment that can adapt to AB component silicone OCA, synchronously roll-form with dual release films, cover thickness of 50-1200μm, and cure at a temperature of around 120℃, without modifying the release film, to create a peel force gradient, thus balancing molding accuracy and peel effect. Summary of the Invention

[0005] To address the aforementioned issues in existing technologies where AB-component silicone OCA dual-release film is synchronously rolled for molding (50-1200μm), and the curing temperature is typically around 120℃, which is similar to that of silicone rubber, this invention provides a differentiated curing process and equipment for synchronously rolling AB-component silicone OCA dual-release film. This process precisely controls the interfacial bonding force through upper cooling and lower heating, constructing a stable peel force gradient to solve the problems of difficult peeling and film slippage, ensuring complete cross-linking and stable performance of the AB adhesive.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a dual release film synchronous roll forming AB component silicone OCA differential curing equipment. The curing equipment includes a frame, a feeding component, a composite roller group, a differential temperature control module and a winding mechanism. The feeding component, the composite roller group, the differential temperature control module and the winding mechanism are arranged and installed sequentially on the frame. The differential temperature control module includes a cold air device set on the upper side of the material channel and an infrared preheating device set on the lower side of the material channel.

[0007] A differentiated curing process for AB-component silicone OCA synchronous roll forming of dual release films, wherein the curing process includes the following steps: Step S1, AB rubber premixing and synchronous roller shaping: The AB component silicone rubber is premixed evenly at room temperature according to the ratio, and then the mixed material is sent to the feed end of the composite roller group through the feeding component, and then synchronously passed through the roller with the upper release film and the lower release film. Step S2, Differentiated Pre-curing: After passing through the rollers, the composite blank in step S1 directly enters the differentiated temperature control zone. In this zone, the upper release film side is controlled by blowing cold air through a cold air device, and the lower release film side is preheated by an infrared preheating device to promote adhesion. When the material enters the differentiated temperature control zone, it is conveyed synchronously without any retention. Step S3, Segmented Final Curing: The pre-cured upper and lower release films from step S2, sandwiched together with the premixed AB adhesive, are placed in a constant temperature oven for segmented curing. Thin film: The first stage is the preheating stage, with a preheating temperature of 110℃ and a preheating time of 1-2 minutes; the second stage is the core curing stage, with a curing temperature of 120℃ and a curing time of 2-3 minutes. Thick adhesive: The first stage is the preheating stage, with a preheating temperature of 115℃ and a preheating time of 2-3 minutes; the second stage is the core curing stage, with a curing temperature of 120-125℃ and a curing time of 4-7 minutes. Step S4, tension-controlled cooling and winding: After the material is discharged from the oven, it is gradually cooled to room temperature. First, it is slowly cooled at 50-60℃, and then cooled to room temperature.

[0008] The technical solution adopted by the present invention to solve its technical problem further includes: The feeding assembly includes an AB glue storage tank, a static mixer, and a metering pump. The static mixer is connected to the AB glue storage tank, and the metering pump is connected to the static mixer.

[0009] The composite roller assembly includes an upper pressure roller and a lower pressure roller, which are arranged opposite to each other, and the gap between the upper pressure roller and the lower pressure roller is between 0.05-1.2mm.

[0010] The composite roller assembly also includes an upper release film unwinding roller and a lower release film unwinding roller, which are symmetrically arranged on the upper and lower sides of the composite roller assembly.

[0011] The cooling device includes a nozzle and a fan. The fan is connected to the nozzle. The nozzle is a long strip-shaped nozzle. A guide plate is provided at the outlet of the nozzle. The guide plate is inclined at a 45° angle.

[0012] The height of the air nozzle is 4-10 cm.

[0013] The infrared preheating device uses low-temperature carbon fiber infrared tubes, with one or more low-temperature carbon fiber infrared tubes arranged evenly side by side along the feeding direction, and the distance between adjacent low-temperature carbon fiber infrared tubes is 20-35mm.

[0014] The installation height of the aforementioned low-temperature carbon fiber infrared tube is 7-16cm.

[0015] In step S2, the parameters are set as follows: Cold air parameters: air temperature 18-25℃, air speed 1.0-2.8m / s, air nozzles are arranged along the width of the film, the height of the air nozzles from the upper release film is 4-10CM, the air is blown at a 45° angle, and the overall action time is 20-70s; Infrared preheating parameters: The infrared band is selected as 2.2-3.8μm, the power of the low-temperature carbon fiber infrared tube is set to 300-700W, the height of the low-temperature carbon fiber infrared tube from the lower release film is 7-16cm, the heating temperature is controlled at ≤60℃, the overall action time is 20-70s, and it is completed synchronously with the cold air.

[0016] The beneficial effects of the present invention are: (1) The present invention is fully compatible with AB component silicone OCA, and the curing temperature is about 120℃, which is consistent with the conventional process. The double release film is simultaneously rolled and formed to cover the full thickness of 50-1200μm. The design of upper cooling and lower preheating allows the adhesive layer on the upper film side to be quickly shaped and the interfacial bonding force to be reduced to 3-5gf / in. After the adhesive layer on the lower film side is preheated, the bonding force with the film increases to 8-14gf / in, with a gradient of 5-9gf / in, thereby forming an upper film that is easy to peel off and has no adhesive residue. Even thick adhesive does not stick. (2) The lower side uses infrared preheating in combination with the rolling pressure to prevent the film material from sticking during the forming-curing process. Sliding, thin glue thickness deviation ≤ ±1μm, thick glue thickness deviation ≤ ±3μm; segmented curing and bonding at around 120℃ conforms to the crosslinking law of silicone rubber, the glue layer has no bubbles and no shrinkage, the adhesion and light transmittance meet the standards, and the yield is improved by more than 20%; (3) No need to replace the release film (both upper and lower use low release force release film), no additional additives are added, it does not affect the core performance of silicone rubber OCA, and is suitable for mass production; (4) wind speed, infrared power, and tension are graded to adapt to different thicknesses, the oven temperature control is accurate to adapt to the 120℃ curing requirement, the equipment is simple to modify, the energy consumption is suitable for conventional production lines, and it conforms to the existing process habits of the factory.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the curing equipment structure in this invention.

[0019] In the diagram, 1-frame, 2-upper release film unwinding roller, 3-lower release film unwinding roller, 4-upper pressure roller, 5-lower pressure roller, 6-quantitative feed pump, 7-cooling air device, 8-infrared preheating device, 9-winding mechanism. Detailed Implementation

[0020] This embodiment is a preferred embodiment of the present invention. All other embodiments that are the same as or similar to this embodiment in principle and basic structure are within the protection scope of the present invention.

[0021] Please refer to the appendix. Figure 1 This invention protects a device for synchronous roll forming of dual release film and differentiated curing of AB-component silicone OCA. It mainly includes a frame 1, a feeding assembly, a composite roller assembly, a differentiated temperature control module, and a winding mechanism. The feeding assembly, composite roller assembly, differentiated temperature control module, and winding mechanism 9 are sequentially arranged and installed on the frame 1. It can adapt to films of 50-1200μm thickness and is suitable for the curing characteristics of silicone rubber at around 120℃. It features no melting, synchronous roll forming, and compatibility with curing at around 120℃. The differentiated temperature control module includes a cooling air device 7 located on the upper side of the material channel and an infrared preheating device 8 located on the lower side of the material channel to meet the pre-curing requirements of silicone rubber.

[0022] In this embodiment, the feeding component is an AB glue pretreatment component, also known as an AB glue premixing feeding component. It mainly includes an AB glue storage tank, a static mixer (to avoid air bubbles), and a metering pump 6. The static mixer (not shown in the figure) is connected to the AB glue storage tank (not shown in the figure), and the metering pump 6 is connected to the static mixer. The material in the AB glue storage tank is first put into the static mixer for mixing. The mixed material is then pumped onto the lower release film by the metering pump 6 for coating. In this embodiment, the AB glue is premixed at room temperature without heating. The metering pump 6 is linked to the roller speed, that is, linked to the unwinding speed of the upper and lower release films, which can ensure the uniformity of the glue layer.

[0023] In this embodiment, the composite roller assembly is the core forming component of the present invention. It mainly includes an upper pressure roller 4 and a lower pressure roller 5, which are arranged opposite to each other. The roller gap between the upper pressure roller 4 and the lower pressure roller 5 is adjustable. By adjusting the roller gap between the upper pressure roller 4 and the lower pressure roller 5, the thickness of the double release film OCA can be precisely controlled between 0.05-1.2mm. The roller pressure between the upper pressure roller 4 and the lower pressure roller 5 can be adjusted in increments between 0.3-0.8MPa. The adjustment structure between the upper pressure roller 4 and the lower pressure roller 5 can adopt conventional adjustment structures in the prior art. The simplest one is to use a bolt and nut structure to adjust the roller gap and a spring structure to control the roller pressure. In this embodiment, the composite roller group also includes an upper release film unwinding roller 2 and a lower release film unwinding roller 3. The upper release film unwinding roller 2 and the lower release film unwinding roller 3 are symmetrically arranged on the upper and lower sides of the composite roller group, respectively used for the unwinding operation of the upper release film and the lower release film. The upper release film unwinding roller 2 and the lower release film unwinding roller 3 are equipped with a guide roller to ensure that the upper release film and the lower release film pass through the roller synchronously without deviation. In this embodiment, the upper release film unwinding roller 2 and the lower release film unwinding roller 3 are independently controlled. Each roller is equipped with a precision tension controller, which can control the upper release film unwinding tension to 7-12N and the lower release film unwinding tension to 5-8N. If the adhesive layer is thick (i.e., thick adhesive), a thick adhesive mode is used, and the tensions of both the upper and lower release films are automatically increased by 20%. This difference in tension between the upper and lower films allows for pre-compensation during the unwinding stage, preventing wrinkles caused by temperature differences in subsequent processes. In this embodiment, the differentiated temperature control module is positioned adjacent to the composite roller group, with a seamless connection between them. After coating, the material enters the differentiated temperature control module for curing, minimizing the risk of material deformation.

[0024] In this embodiment, the cooling air device 7 mainly includes a nozzle and a fan. The fan is connected to the nozzle, and the air from the fan is blown out through the nozzle towards the material to dissipate heat. A speed-controlled fan is selected, and the airflow from the nozzle can be adjusted by changing the fan speed. The nozzle is a long, narrow shape, with a width adapted to the film width, preferably equal to or slightly larger than the film width. A guide plate is provided at the nozzle outlet, inclined at a 45° angle, ensuring the airflow from the nozzle forms a 45° angle with the film material. The nozzle features a condensation-free design to prevent moisture absorption of the adhesive layer. In this embodiment, the nozzle height is adjustable between 4-10cm, meaning the distance between the bottom of the nozzle and the upper release film is 4-10cm.

[0025] In this embodiment, there is one or more air nozzles, which are arranged side by side along the feeding direction. The specific number or the number of air nozzles used is selected according to actual needs.

[0026] In this embodiment, the infrared preheating device 8 uses low-temperature carbon fiber infrared tubes. There is one or more low-temperature carbon fiber infrared tubes arranged evenly side-by-side along the feeding direction, with a spacing of 20-35mm between adjacent tubes. The power of the low-temperature carbon fiber infrared tubes can be set in different levels. In this embodiment, it is mainly divided into 300W, 500W, and 700W levels, but in specific implementation, it can be set according to actual needs. In this embodiment, the infrared preheating device 8 is equipped with a temperature control probe, which can be used to detect the material temperature. The temperature control probe is set to control the temperature ≤60℃. When the detected temperature exceeds the set temperature, the power of the low-temperature carbon fiber infrared tubes is automatically reduced.

[0027] In this embodiment, a gold-plated reflective layer is disposed below the low-temperature carbon fiber infrared tube, which can be used to concentrate heat and prevent heat dissipation. The installation height of the low-temperature carbon fiber infrared tube is adjustable between 7-16cm, that is, the distance between the low-temperature carbon fiber infrared tube and the lower release film is 7-16cm.

[0028] In this embodiment, a segmented constant temperature oven (not shown in the figure) is provided between the differentiated temperature control module and the winding mechanism to accommodate 120℃ curing and prevent damage to the silicone rubber performance. In this embodiment, the segmented constant temperature oven has two independently controlled temperature sections: the first section is the preheating stage (typically 110℃~115℃), and the second section is the core curing stage, with the temperature controlled at approximately 120℃ (temperature control accuracy ±1℃). In this embodiment, the conveyor rollers inside the segmented constant temperature oven are non-stick, high-temperature resistant conveyor rollers, typically with a temperature resistance exceeding 150℃.

[0029] In this embodiment, a thickness sensor and a bubble detector are installed in the segmented constant temperature oven to monitor the state of the adhesive layer in real time. The thickness sensor and the bubble detector can adopt the structure commonly used in the prior art.

[0030] In this embodiment, the inner wall of the segmented constant temperature oven is provided with a heat insulation layer, which can achieve the heat preservation effect and control the temperature accuracy inside the segmented constant temperature oven to ±1℃, ensuring the consistency of silicone rubber curing.

[0031] In this embodiment, the winding mechanism 9 adopts a tension synchronous winding mechanism, and the winding speed is linked with the feeding and roller speed to prevent the stretching / wrinkling of the rubber layer. It is equipped with a cooling buffer section to achieve gradient cooling of the silicone rubber layer.

[0032] This invention also protects a dual-release-film synchronous roll forming process for differentiated curing of AB component silicone rubber OCA. This process is used for differentiated curing of AB component silicone rubber OCA, and it adopts a dual-release-film synchronous roll forming process combined with a non-melting and curing process at around 120°C. The main steps include the following: Step S1, AB Glue Premixing and Synchronous Roller Shaping: The AB component silicone rubber is premixed uniformly at room temperature according to the ratio (usually 1:1 or a manufacturer-prescribed ratio). The mixed material is then fed to the feed end of the composite roller assembly via the feeding component. It then passes synchronously with the upper and lower release films (composite roller assembly). The upper and lower release films sandwich the premixed AB glue to form an "upper release film - AB glue layer - lower release film" composite blank. The thickness is precisely adjusted by the gap between the upper pressure roller 4 and the lower pressure roller 5 (overall thickness is 50-1200μm). The initial release force of both the upper and lower release films is 5-8gf / in, and the roller pressure is 0.3-0.8MPa (for thin rubber). (Using low pressure and high pressure for thick adhesive, the thinner the AB adhesive layer, the lower the pressure on the rollers, and vice versa.) In this embodiment, the upper release film unwinding roller 2 and the lower release film unwinding roller 3 are independently controlled. The upper release film unwinding roller 2 and the lower release film unwinding roller 3 are each equipped with a precision tension controller, which can control the upper release film unwinding tension to 7-12N and the lower release film unwinding tension to 5-8N. If the adhesive layer is thick (i.e., thick adhesive), the thick adhesive mode is adopted, and the tension of the upper release film unwinding and the tension of the lower release film unwinding are automatically increased by 20%. By using the difference in the tension of the upper and lower films unwinding, compensation can be made in advance during the unwinding stage to prevent wrinkles caused by the temperature difference between the upper and lower layers in subsequent processes. Step S2, Differentiated Pre-curing: This step is the core process of the present invention. In order to adapt to the curing characteristics of silicone rubber, the composite preform in step S1 directly enters the differentiated temperature control zone after passing through the roller. In this zone, the upper release film side is controlled by blowing cold air through the cold air device 7, and the lower release film side is preheated by infrared preheating device 8 to promote adhesion. When the material enters the differentiated temperature control zone, it is conveyed synchronously without stagnation, laying the foundation for subsequent 120℃ curing. At the same time, the interface gradient is built in advance. The parameter settings in this embodiment are as follows: Cold air parameters: air temperature 18-25℃ (normal temperature cold air is sufficient, no special cooling is required), air velocity 1.0-2.8m / s (in this invention, a layer thickness of 50-200μm is defined as thin adhesive, and the air velocity used for thin adhesive is usually 1.0-1.6m / s; a layer thickness of 200-1200μm is defined as thick adhesive, and the air velocity used for thick adhesive is usually 1.8-2.8m / s), the nozzle is arranged along the width of the film, the height from the upper release film is 4-10CM, and the blowing is done at a 45° angle, with an overall action time of 20-70s (the thicker the adhesive layer, the longer the time, to avoid adhesive layer flow). Infrared preheating parameters: The infrared band is selected as 2.2-3.8μm, the power of the low-temperature carbon fiber infrared tube is set to 300-700W (the power used for thin adhesive is usually 300-400W; the power used for thick adhesive is usually 500-700W), the height of the low-temperature carbon fiber infrared tube from the lower release film is 7-16cm, the heating temperature is controlled at ≤60℃ (low-temperature preheating does not cross-link), the overall action time is 20-70s, and it is completed synchronously with the cold air; Step S3, Segmented Final Curing: To achieve the curing requirement of silicone rubber at around 120°C, the pre-cured upper and lower release films from step S2 are sandwiched together with premixed AB adhesive and sent into a constant temperature oven for segmented curing. The core curing temperature meets the conventional requirements of silicone rubber while taking into account the uniformity of crosslinking between thick and thin adhesives. In this embodiment, the operations for thin and thick adhesives are different, wherein: Thin adhesive (adhesive layer thickness is 50-200μm): The first stage is the preheating stage, the preheating temperature is 110℃, and the preheating time is set to 1-2min. The second stage is the core curing stage, the curing temperature is 120℃, and the curing time is set to 2-3min. The total time is 3-5min to prevent the thin adhesive from deforming at high temperature. Thick adhesive (adhesive layer thickness 200-1200μm): The first stage is the preheating stage, with a preheating temperature of 115℃ and a preheating time of 2-3 minutes to achieve core preheating. The second stage is the core curing stage, with a curing temperature of 120-125℃ and a curing time of 4-7 minutes. The total time is 6-10 minutes to ensure complete internal cross-linking and no air bubbles, meeting the curing requirements of thick silicone rubber.

[0033] Step S4, tension-controlled cooling and winding: After exiting the oven, the material is gradually cooled to room temperature. First, it is slowly cooled at 50-60℃, and then cooled to room temperature to avoid shrinkage and cracking of the silicone rubber layer. The winding speed is synchronized with the roller speed to prevent the rubber layer from stretching.

[0034] (1) Fully compatible with AB component silicone OCA, curing temperature is around 120℃ for conventional processes, dual release films are rolled simultaneously to cover the full thickness of 50-1200μm; the design of upper cooling and lower preheating allows the upper film side adhesive layer to be quickly shaped and the interfacial bonding force to be reduced to 3-5gf / in, while the lower film side adhesive layer is preheated and the bonding force with the film increases to 8-14gf / in, a gradient of 5-9gf / in, thus forming an upper film that is easy to peel off and has no adhesive residue, and even thick adhesive will not stick; (2) The lower side adopts infrared preheating combined with roller pressure to prevent the film material from sliding during the molding-curing process. The thickness deviation of thin glue is ≤ ±1μm, and the thickness deviation of thick glue is ≤ ±3μm. The segmented curing and bonding at about 120℃ conforms to the cross-linking law of silicone rubber. The adhesive layer is free of bubbles and does not shrink. The adhesion and light transmittance meet the standards, and the yield rate is improved by more than 20%. (3) No need to replace the release film (both upper and lower release films are low release force release films), no additional additives are added, and the core performance of silicone rubber OCA is not affected, making it suitable for mass production; (4) The wind speed, infrared power and tension are divided into different levels to adapt to different thicknesses. The oven temperature control is accurate to meet the curing requirements of 120℃. The equipment is easy to modify and the energy consumption is compatible with conventional production lines, which fits the existing process habits of the factory.

Claims

1. A dual-release film synchronous roll forming AB component silicone OCA differential curing equipment, characterized in that: The curing equipment includes a frame (1), a feeding assembly, a composite roller assembly, a differential temperature control module, and a winding mechanism (9). The feeding assembly, the composite roller assembly, the differential temperature control module, and the winding mechanism (9) are arranged and installed sequentially on the frame (1). The differential temperature control module includes a cold air device (7) installed on the upper side of the material channel and an infrared preheating device (8) installed on the lower side of the material channel.

2. The dual release film synchronous roll forming AB component silicone OCA differential curing equipment according to claim 1, characterized in that: The feeding assembly includes an AB glue storage tank, a static mixer, and a metering pump (6). The static mixer is connected to the AB glue storage tank, and the metering pump (6) is connected to the static mixer.

3. The dual release film synchronous roller forming AB component silicone OCA differential curing equipment according to claim 1, characterized in that: The composite roller assembly includes an upper pressure roller (4) and a lower pressure roller (5), which are arranged opposite to each other, and the gap between the upper pressure roller (4) and the lower pressure roller (5) is between 0.05-1.2mm.

4. The dual release film synchronous roller forming AB component silicone OCA differential curing equipment according to claim 1, characterized in that: The composite roller assembly also includes an upper release film unwinding roller (2) and a lower release film unwinding roller (3), which are symmetrically arranged on the upper and lower sides of the composite roller assembly.

5. The dual release film synchronous roll forming AB component silicone OCA differential curing equipment according to claim 1, characterized in that: The cooling air device (7) includes a nozzle and a fan. The fan is connected to the nozzle. The nozzle is a long strip-shaped nozzle. A guide plate is provided at the nozzle outlet. The guide plate is inclined at a 45° angle.

6. The dual release film synchronous roller forming AB component silicone OCA differential curing equipment according to claim 5, characterized in that: The height of the air nozzle is 4-10 cm.

7. The dual release film synchronous roller forming AB component silicone OCA differential curing equipment according to claim 1, characterized in that: The infrared preheating device (8) uses low-temperature carbon fiber infrared tubes. There is one or more low-temperature carbon fiber infrared tubes. The low-temperature carbon fiber infrared tubes are evenly arranged side by side along the feeding direction, and the distance between adjacent low-temperature carbon fiber infrared tubes is 20-35mm.

8. The dual release film synchronous roll forming AB component silicone OCA differential curing equipment according to claim 7, characterized in that: The installation height of the aforementioned low-temperature carbon fiber infrared tube is 7-16cm.

9. A differentiated curing process for AB-component silicone OCA formed by simultaneous roller molding of dual release films, characterized in that: The curing process includes the following steps: Step S1, AB rubber premixing and synchronous roller shaping: The AB component silicone rubber is premixed evenly at room temperature according to the ratio, and then the mixed material is sent to the feed end of the composite roller group through the feeding component, and then synchronously passed through the roller with the upper release film and the lower release film. Step S2, Differentiated Pre-curing: After passing through the rollers, the composite blank in step S1 directly enters the differentiated temperature control zone. In this zone, the upper release film side is controlled by blowing cold air through the cold air device (7), and the lower release film side is preheated by infrared preheating device (8) to promote adhesion. When the material enters the differentiated temperature control zone, it is conveyed synchronously without stagnation. Step S3, Segmented Final Curing: The pre-cured upper and lower release films from step S2, sandwiched together with the premixed AB adhesive, are placed in a constant temperature oven for segmented curing. Thin film: The first stage is the preheating stage, with a preheating temperature of 110℃ and a preheating time of 1-2 minutes; the second stage is the core curing stage, with a curing temperature of 120℃ and a curing time of 2-3 minutes. Thick adhesive: The first stage is the preheating stage, with a preheating temperature of 115℃ and a preheating time of 2-3 minutes; the second stage is the core curing stage, with a curing temperature of 120-125℃ and a curing time of 4-7 minutes. Step S4, tension-controlled cooling and winding: After the material is discharged from the oven, it is gradually cooled to room temperature. First, it is slowly cooled at 50-60℃, and then cooled to room temperature.

10. The dual release film synchronous roll forming AB component silicone OCA differentiated curing process according to claim 9, characterized in that: In step S2, the parameters are set as follows: Cold air parameters: air temperature 18-25℃, air speed 1.0-2.8m / s, air nozzles are arranged along the width of the film, the height of the air nozzles from the upper release film is 4-10CM, the air is blown at a 45° angle, and the overall action time is 20-70s; Infrared preheating parameters: The infrared band is selected as 2.2-3.8μm, the power of the low-temperature carbon fiber infrared tube is set to 300-700W, the height of the low-temperature carbon fiber infrared tube from the lower release film is 7-16cm, the heating temperature is controlled at ≤60℃, the overall action time is 20-70s, and it is completed synchronously with the cold air.

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