Device and method for improving performance of PVA optical film

Abstract

The invention relates to the technical field of performance improvement of optical films, and discloses a device and a method for improving the performance of a PVA (Polyvinyl Alcohol) optical film. The mounting assembly is arranged in the box body and is used for mounting and fixing the PVA optical film and driving the PVA optical film to rotate; the air supply assembly is arranged in the center of the top of the box body and used for inputting constant-temperature and constant-humidity air into the box body; the air exhaust assembly is arranged on the side portion of the box body, is close to the bottom end of the box body and is used for being matched with the air supply assembly so that the constant-temperature and constant-humidity air can continuously flow and be conveyed to the PVA optical film. According to the PVA optical film aging device, constant-temperature and constant-humidity air is continuously introduced into the box body through the air supply assembly, and constant-temperature and constant-humidity dynamic flowing air is formed in cooperation with the air exhaust assembly, so that the PVA optical film is uniformly aged, the performance of the PVA optical film is improved, the quality of a polaroid is guaranteed, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of optical film performance improvement technology, and specifically to a device and method for improving the performance of PVA optical films. Background Technology

[0002] Polarizing films, also known as optical polarizers, are a core component of liquid crystal displays (LCDs). They are mainly composed of PVA optical films, TAC films, release films, and PET films, with the PVA optical film being the core functional layer. As the core material for achieving polarization, the mechanical properties of the PVA optical film determine the stretching ratio of PVA during polarizer manufacturing. Therefore, it is necessary to improve the mechanical properties of the PVA optical film to enhance the quality of the polarizer.

[0003] In existing technologies, the mechanical properties of PVA optical films are determined after production. Using PVA optical films that fail to meet mechanical property standards directly can negatively impact the quality of subsequent products such as polarizers; direct recycling, on the other hand, increases costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem that the performance of PVA optical films affects product quality and cost in the prior art, and to provide a device and method for improving the performance of PVA optical films, which has the function of improving the mechanical properties of PVA optical films.

[0005] To achieve the above objectives, the present invention provides a device for improving the performance of PVA optical films, comprising: Box; The mounting components are located inside the housing and are used to mount and fix the PVA optical film and drive the PVA optical film to rotate. An air supply assembly is located at the top center of the housing and is used to supply constant temperature and humidity air into the interior of the housing. An exhaust assembly is located on the side of the housing and near the bottom of the housing, and is used to cooperate with the air supply assembly to continuously deliver the constant temperature and humidity air to the PVA optical film.

[0006] Optionally, the mounting components include: Two sets of brackets are symmetrically arranged at the bottom of the box. Two sets of rotating components are symmetrically arranged at one end of the two sets of brackets away from the inner wall of the box, and the output end of the rotating components is connected to the core of the PVA optical film.

[0007] Optionally, the air supply assembly includes: An air supply duct, one end of which is connected to the housing; A blower is installed on the air supply duct; A heating component is installed on the air supply duct and is used to regulate the air temperature inside the air supply duct. A humidity control component is installed on and connected to the air supply duct, and is used to regulate the air humidity inside the air supply duct.

[0008] Optionally, one end of the air supply duct is connected to an inverted U-shaped pipe, and both ends of the inverted U-shaped pipe are connected to the housing.

[0009] Optionally, the exhaust assembly includes: The exhaust duct is connected at one end to the housing. An exhaust fan is installed on the exhaust duct.

[0010] Optionally, the exhaust assembly is provided in two sets, with the two sets of exhaust assemblies respectively located on opposite sides of the housing.

[0011] Optionally, it also includes: Two sets of circulation pipes are symmetrically arranged on the box body. One end of each circulation pipe is connected to the top of the box body, and the other end of each circulation pipe is connected to the side of the box body. Two sets of circulating fans are respectively installed on the two sets of circulating pipes.

[0012] Optionally, the bracket may be made of stainless steel.

[0013] On the other hand, the present invention also provides a method for improving the performance of a PVA optical film using the performance improvement device described above, comprising: The PVA optical film is placed on the mounting assembly, and the PVA optical film is fixed by the mounting assembly; The mounting assembly drives the PVA optical film to rotate; Preset aging parameters, wherein the aging parameters include aging temperature, aging humidity and aging time; The air supply and exhaust components are activated to supply flowing, temperature- and humidity-controlled air into the housing. Obtain the real-time temperature and humidity inside the box; The air supply component is controlled based on the real-time temperature and humidity inside the housing.

[0014] Optionally, the aging temperature includes 20-90℃, the aging humidity includes 40-70%RH, and the aging time includes 2-72h.

[0015] Through the above technical solution, the performance improvement device and method for PVA optical film provided by the present invention uses an installation component to install and fix the PVA optical film with substandard mechanical properties inside the housing, and drives the PVA optical film to rotate. At the same time, a constant temperature and humidity air is continuously introduced into the housing using an air supply component, and in conjunction with an exhaust component, a dynamic flow of constant temperature and humidity air is formed to uniformly age the PVA optical film, thereby improving the performance of the PVA optical film, ensuring the quality of the polarizer, and reducing costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a performance enhancement device for PVA optical films according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the air supply component in a performance enhancement device for PVA optical film according to an embodiment of the present invention. Figure 3 This is a flowchart of a method for improving the performance of a PVA optical film according to an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures 1. Housing; 2. Bracket; 3. Rotating assembly; 4. Mounting assembly; 5. Air supply duct; 6. Air supply fan; 7. Heating assembly; 8. Humidity control assembly; 9. Inverted U-shaped duct; 10. Circulating fan; 11. Circulating duct; 12. Exhaust assembly; 13. Exhaust duct; 14. Exhaust fan; 15. Control panel. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0019] Figure 1 This is a schematic diagram of a performance enhancement device for PVA optical films according to an embodiment of the present invention. Figure 1 The performance enhancement device may include a housing 1, a mounting assembly 4, an air supply assembly, and an exhaust assembly 12.

[0020] Mounting assembly 4 is located inside housing 1 and is used to mount and fix the PVA optical film and drive its rotation. Air supply assembly is located at the top center of housing 1 and is used to supply temperature- and humidity-controlled air into the interior of housing 1. Exhaust assembly 12 is located on the side of housing 1, near the bottom, and works in conjunction with the air supply assembly to ensure a continuous flow of temperature- and humidity-controlled air to the PVA optical film.

[0021] When it is necessary to improve the performance of PVA optical films that do not meet mechanical performance standards, the PVA optical film can first be installed and fixed inside the chamber 1 using the mounting component 4. After installation, the PVA optical film is driven to rotate, and constant temperature and humidity air is introduced / blown into the chamber 1 through the air supply component. Specifically, the constant temperature and humidity air refers to air heated to a certain temperature and humidified to a certain humidity before being introduced into the chamber 1 to maintain a constant temperature and humidity state. The constant temperature and humidity air can perform aging modification on the PVA optical film that does not meet mechanical performance standards, reduce stress concentration in the PVA optical film, and improve its tensile strength and other properties. At the same time, the exhaust component 12 is activated, working in conjunction with the air supply component, to create a constant temperature and humidity flowing gas inside the chamber 1, which can continuously blow constant temperature and humidity air onto the PVA optical film that does not meet mechanical performance standards, further improving the uniformity and reliability of aging.

[0022] The mechanical properties of traditional PVA optical films are determined after production. Using PVA optical films with substandard mechanical properties directly can affect the quality of subsequent products; direct recycling increases costs. In this embodiment of the invention, the installation component 4 fixes and drives the PVA optical film to rotate, while the air supply and exhaust components 12 work together to form a constant temperature and humidity gas flow inside the housing 1. This allows for uniform and reliable aging of the PVA optical film, effectively reducing stress concentration and improving its tensile strength and other properties. In other words, aging modification is achieved, improving the quality of the polarizer and reducing costs.

[0023] In this embodiment of the invention, such as Figure 1 As shown, the mounting assembly 4 may include two sets of brackets 2 and two sets of rotating assemblies 3.

[0024] Two sets of brackets 2 are symmetrically arranged at the bottom of the inner wall of the housing 1, and two sets of rotating components 3 are symmetrically arranged at the ends of the two sets of brackets 2 away from the inner wall of the housing 1. The output end of the rotating components 3 is connected to the core of the PVA optical film. Specifically, the two sets of rotating components 3 are arranged on opposite sides of the two sets of brackets 2.

[0025] When it is necessary to install and fix the PVA optical film core, this can be achieved by connecting the PVA optical film core to the output end of the rotating component 3. Specifically, an inflatable plug can be used to fix the PVA optical film and the core. Specifically, the plug can be detachable and replaceable with other sizes, such as 3 to 10 inches. After the plug wears out, it can be removed and replaced with a new plug, thereby improving the reliability of the PVA optical film installation.

[0026] In this embodiment of the invention, the material of the bracket 2 may include stainless steel, which can improve the stability and effectiveness of fixing the PVA optical film core. Furthermore, the base of the bracket 2 may include a slide rail type fixing component, allowing the two sets of brackets 2 to move relative to each other to accommodate cores of different lengths, thus increasing versatility and applicability. Simultaneously, the base can be fixedly connected to the inner wall of the housing 1, so that after the base / bracket 2 moves to a preset position, it can be locked in place, including but not limited to bolt tightening.

[0027] In this embodiment of the invention, the specific form of the rotating component 3 may include, but is not limited to, a motor and shaft mating structure. By connecting the output end of the motor to the end of the PVA optical film core, the PVA optical film can be continuously rotated, thereby allowing constant temperature and humidity air to be blown evenly onto the PVA optical film, further improving the reliability of PVA optical film aging / performance improvement.

[0028] In this embodiment of the invention, such as Figure 1 as well as Figure 2 As shown, the air supply assembly may include an air supply duct 5, an air supply fan 6, a heating assembly 7, and a humidity control assembly 8.

[0029] One end of the air supply duct 5 is connected to the housing 1, and the air supply fan 6 is installed on the air supply duct 5. The heating component 7 is installed on the air supply duct 5 and is used to regulate the air temperature inside the air supply duct 5. The humidity control component 8 is installed on the air supply duct 5 and is connected to the air supply duct 5, and is used to regulate the air humidity inside the air supply duct 5.

[0030] When it is necessary to introduce constant temperature and humidity gas / air into the chamber 1, the air supply fan 6 can be started to blow outside air into the chamber 1 along the duct. When the air is in the air supply duct 5, the air can be heated to the preset temperature by the heating component 7, and the air can be humidified or dehumidified by the humidity control component 8, so that the air with the preset temperature and humidity can be introduced into the chamber 1 to form a constant temperature and humidity space.

[0031] In this embodiment of the invention, such as Figure 1 and Figure 2 As shown, the air supply duct 5 may include an inverted U-shaped duct 9. Specifically, one end of the air supply duct 5 is connected to the inverted U-shaped duct 9, and both ends of the inverted U-shaped duct 9 are connected to the housing 1. The two ends of the inverted U-shaped duct 9 are the two endpoints located at the open end. Specifically, the inverted U-shaped duct 9 is located at the connection end between the air supply duct 5 and the housing 1, and can split the constant temperature and humidity air into two parts and input them into the housing 1 respectively, so as to further improve the uniformity and effectiveness of the constant temperature and humidity air input.

[0032] Furthermore, the two ends of the inverted U-shaped pipe 9 are respectively distributed corresponding to the two sets of supports 2, and the line connecting the two ends of the inverted U-shaped pipe 9 is consistent with the direction of the PVA optical film. Therefore, the constant temperature and humidity air can be blown towards the vicinity of the two ends of the PVA optical film, further improving the uniformity of the constant temperature and humidity gas on the aging / performance improvement of the PVA optical film.

[0033] In this embodiment of the invention, the heating component 7 may be specifically designed to use a heating element, such as an electric heating tube or a heating element, to convert electrical energy into heat energy to heat the air in the air supply duct 5.

[0034] In this embodiment of the invention, the specific form of the humidity control component 8 may include a combination of a humidifier and a dehumidifier. Specifically, the humidifier humidifies using low-pressure steam, that is, low-pressure steam is directly injected into the air duct, and the dehumidifier dehumidifies using a dryer, that is, a pump is used to extract the humid air from the housing 1 and inject dry air. Further, the water added to the humidifier may include demineralized water with a pH of 6-8. When aging the PVA optical film, it is necessary to ensure that there is a sufficient level of demineralized water in the humidifier to ensure the normal and reliable operation of the humidifier.

[0035] In this embodiment of the invention, the air supply assembly may further include a temperature and humidity detection component, such as a temperature and humidity sensor. Specifically, a temperature and humidity sensor can be used to monitor the temperature and humidity inside the housing 1 in real time, so as to accurately control and adjust the temperature and humidity inside the housing 1. Specifically, the detection accuracy of the temperature inside the housing 1 may include a tenth of a percent, such as ±0.5℃, and the detection accuracy of the humidity inside the housing 1 may include a unit, such as ±1.0%RH.

[0036] In this embodiment of the invention, such as Figure 1 As shown, the performance enhancement device may also include a control panel 15, which is located on one side of the enclosure 1 and can display the temperature and humidity parameters inside the enclosure 1 collected in real time by the temperature and humidity sensor. Simultaneously, the control panel 15 can control the heating component 7 and the humidity control component 8 based on the real-time temperature and humidity parameters to dynamically adjust the temperature and humidity inside the enclosure 1. Specifically, the accuracy of the target temperature value inside the enclosure 1 can be controlled within ±1.0℃, and the accuracy of the target humidity value inside the enclosure 1 can be controlled within ±2.0%; the temperature uniformity inside the enclosure 1 can be controlled within ±1.0℃, and the humidity uniformity inside the enclosure 1 can be controlled within ±2.0%. Furthermore, the control panel 15 also supports manual input, allowing adjustment of the constant temperature and humidity parameters inside the enclosure 1 to meet the performance enhancement needs of different PVA optical films.

[0037] In this embodiment of the invention, such as Figure 1As shown, the emission assembly may include an exhaust duct 13 and an exhaust fan 14.

[0038] One end of the exhaust duct 13 is connected to the housing 1, and the exhaust fan 14 is installed on the exhaust duct 13.

[0039] When it is necessary to create airflow inside the housing 1, the exhaust fan 14 can be turned on so that the air inside the housing 1 can be discharged along the exhaust duct 13.

[0040] In this embodiment of the invention, such as Figure 1 As shown. The number of exhaust assemblies 12 can include two sets, with the two sets of exhaust assemblies 12 respectively arranged on opposite sides of the housing 1. Specifically, the two sets of exhaust assemblies 12 correspond to the two sets of brackets 2, that is, they are located near both ends of the PVA optical film.

[0041] The two sets of exhaust assemblies 12 can create negative pressure at their connection with the housing 1 to exhaust the space inside the housing 1. Since the two sets of exhaust assemblies 12 are located near both ends of the PVA optical film, a stable negative pressure can be formed near both ends of the PVA optical film, allowing constant temperature and humidity air to flow from the top of the PVA optical film downwards to both ends. The constant temperature and humidity air can fully contact the PVA optical film, further improving the aging / performance enhancement effect and overall performance of the PVA optical film.

[0042] In this embodiment of the invention, such as Figure 1 As shown, the performance enhancement device may also include two sets of circulation pipes 11 and two sets of circulation fans 10.

[0043] Two sets of circulation pipes 11 are symmetrically arranged on the housing 1. One end of the circulation pipe 11 is connected to the top of the housing 1, and the other end of the circulation pipe 11 is connected to the side of the housing 1. Two sets of circulation fans 10 are respectively arranged on the two sets of circulation pipes 11.

[0044] When continuous and sufficient blowing of constant temperature and humidity air is required for the PVA optical film, two sets of circulating fans 10 can be activated. The two sets of circulating fans 10 draw in the constant temperature and humidity air inside the chamber 1 from one end and blow it out from the other end. While disturbing the constant temperature and humidity air inside the chamber 1, they also add additional air vents so that the PVA optical film can fully contact the flowing constant temperature and humidity air, thereby improving the efficiency and effect of PVA optical film aging / performance improvement.

[0045] In this embodiment of the invention, the performance enhancement device may further include a safety protection device. Specifically, the safety protection device may include a combination of devices such as an over-temperature protector and a buzzer to provide early warning of high temperatures.

[0046] In this embodiment of the invention, the supply fan 6, the exhaust fan 14, and the circulating fan 10 may include centrifugal fans, which makes the airflow more stable and uniform.

[0047] In this embodiment of the invention, the air supply duct 5, the exhaust duct 13, and the circulation duct 11 are all equipped with high-efficiency filters, which can filter out particles larger than 0.3 μm to purify the air in the housing 1.

[0048] In this embodiment of the invention, the enclosure 1 may include a detachable sealed enclosure 1 to ensure precise control of the internal temperature and humidity of the enclosure 1, prevent air leakage, and facilitate the installation and removal of the PVA optical film. Specifically, the detachable sealed enclosure 1 may include a door that is snapped together with the enclosure body and a sealing strip at the connection point. Furthermore, the enclosure 1 is provided with a glass window / observation window to facilitate observation of the internal conditions of the enclosure 1.

[0049] In this embodiment of the invention, in order to further improve the efficiency of constant temperature and humidity inside the enclosure 1, a heat insulation module is provided inside the enclosure 1. Specifically, the heat insulation module may include, but is not limited to, materials such as polyurethane, polystyrene insulation board, and rock wool board, and the heat insulation material is placed in the jacket of the enclosure 1 for heat preservation.

[0050] On the other hand, the present invention also provides a method for improving the performance of PVA optical films using the above-mentioned performance enhancement device, such as... Figure 3 As shown, the method may include: In step S1, the PVA optical film is placed on the mounting assembly 4 and fixed by the mounting assembly 4. A lifting device can be used to place the PVA optical film between the two sets of supports 2 of the mounting assembly 4, and a plug can be inserted into the roll core to support and suspend the PVA optical film.

[0051] In step S2, the mounting assembly 4 drives the PVA optical film to rotate. This rotation can be achieved through the rotating component 3 within the mounting assembly 4. The rotation speed of the rotating component 3 / core can range from 0.5 to 10 rpm, and can be set on the control panel 15. Furthermore, the rotation mode of the PVA optical film can include forward rotation, reverse rotation, or alternating forward and reverse rotation.

[0052] In step S3, aging parameters are preset, including aging temperature, aging humidity, and aging time.

[0053] In step S4, the air supply assembly and exhaust assembly 12 are activated to introduce flowing, temperature- and humidity-controlled air into the housing 1. The air supply assembly and exhaust assembly 12 create a flowing, temperature- and humidity-controlled gas flow within the housing 1 to age the PVA optical film. Specifically, the air supply frequency of the air supply assembly can be 10-50Hz, the exhaust frequency of the exhaust assembly 12 can be 10-50Hz, and the circulation frequency of the circulating fan 10 can be 10-50Hz.

[0054] In step S5, the real-time temperature and humidity inside the enclosure 1 are acquired. This can be achieved using a temperature and humidity sensor to monitor the temperature and humidity inside the enclosure 1 in real time.

[0055] In step S6, the air supply assembly is controlled based on the real-time temperature and humidity inside the housing 1. Specifically, the heating component 7 and the humidity control component 8 in the air supply assembly can be adjusted according to the real-time temperature and humidity inside the housing 1 to ensure that the inside of the housing 1 is stably within the target temperature and humidity range.

[0056] In steps S1 to S6, the PVA optical film is first placed between the mounting components 4 and fixed by them, and then driven to rotate. Next, the aging parameters inside the chamber 1 are preset, and the air supply and exhaust components 12 are activated. The air supply and exhaust components 12 work together to continuously supply flowing, temperature- and humidity-controlled air into the chamber 1 to age the PVA optical film. During the aging process, temperature and humidity sensors also collect real-time temperature and humidity data inside the chamber 1. Based on these data, the heating component 7 and humidity control component 8 in the air supply component are controlled, i.e., closed-loop temperature and humidity control is implemented to ensure constant temperature and humidity inside the chamber 1, thereby improving the effectiveness and reliability of the aging modification of the PVA optical film.

[0057] In this embodiment of the invention, the aging temperature may include 20-90°C, the aging humidity may include 40-70%RH, and the aging time may include 2-72h.

[0058] In this embodiment of the invention, the rotation speed of the rotating component 3 / core may include 1.5-2.5 rpm, and the core rotation direction alternates between forward and reverse rotation, rotating once every 1-4 hours.

[0059] In this embodiment of the invention, the air supply frequency of the air supply component can include 35-45Hz, the circulation frequency of the circulating fan 10 can include 35-45Hz, and the exhaust frequency of the exhaust component 12 can include 25-30Hz. Specifically, by changing the air supply frequency, exhaust frequency, and circulation frequency, the rate of temperature and humidity rise and fall can be controlled.

[0060] In this embodiment of the invention, the aging temperature may include 25-70°C, the aging humidity may include 45-60%RH, and the aging time may include 12-36h.

[0061] In this embodiment of the invention, the size of the core may be 10 inches, the core rotation speed may be 2 rpm, the forward and reverse alternating mode is selected, the aging time is set to 12 hours, the alternation time is 2 hours, and the normal rotation of the PVA optical film is observed through the observation window on the housing 1.

[0062] In this embodiment of the invention, the frequency of the supply fan 6 may include 40Hz, the frequency of the circulation fan 10 may include 40Hz, and the frequency of the exhaust fan 14 may include 30Hz. Furthermore, when circulating air is introduced into the housing 1, it can be observed around the housing 1 to ensure complete sealing, preventing air leakage that could lead to abnormal temperature and humidity inside the housing 1, thereby affecting the aging modification effect on the PVA optical film.

[0063] In this embodiment of the invention, the aging temperature may include 30°C, the aging humidity may include 55%RH, and the aging time may include 12h.

[0064] In this embodiment of the invention, the PVA optical film after aging modification can be tested to obtain a performance comparison of the PVA optical film before and after aging modification. Specifically, the transmittance and haze of the PVA optical film before and after treatment can be tested with reference to GB / T 2410-2008 Determination of transmittance and haze of transparent plastics; the tensile strength and elongation ratio in the MD and TD directions of the PVA optical film before and after treatment can be tested with reference to GB / T 1040.3-2006 Determination of tensile properties of plastics Part 3: Test conditions for films and sheets; and the MD and TD swelling of the PVA optical film before and after treatment can be tested with reference to HG / T 4185-2022 Polyvinyl alcohol optical films. Specifically, taking 60µm PVA optical film and 45µm PVA optical film as examples, the performance comparison before and after aging modification can be shown in Table 1 and Table 2, respectively.

[0065] Table 1 Comparison of 60µm PVA optical film before and after aging modification

[0066] Table 2 Comparison of 45µm PVA optical film before and after aging modification

[0067] As can be seen from Tables 1 and 2, after aging modification of the PVA optical film, the present invention can effectively reduce the stress concentration of the PVA optical film, improve the tensile strength and elongation at break of the PVA optical film, and thus achieve the purpose of improving the performance of the PVA optical film.

[0068] Through the above technical solution, the performance improvement device and method for PVA optical film provided by the present invention uses the installation component 4 to install and fix the PVA optical film with substandard mechanical properties inside the housing 1, and drives the PVA optical film to rotate. At the same time, the air supply component continuously introduces constant temperature and humidity air into the housing 1, and cooperates with the exhaust component 12 to form a dynamic flow of constant temperature and humidity air to uniformly age the PVA optical film, thereby improving the performance of the PVA optical film, ensuring the quality of the polarizer, and reducing costs.

[0069] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0070] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A device for improving the performance of PVA optical films, characterized in that, include: Box; The mounting components are located inside the housing and are used to mount and fix the PVA optical film and drive the PVA optical film to rotate. An air supply assembly is located at the top center of the housing and is used to supply constant temperature and humidity air into the interior of the housing. An exhaust assembly is located on the side of the housing and near the bottom of the housing, and is used to cooperate with the air supply assembly to continuously deliver the constant temperature and humidity air to the PVA optical film.

2. The performance enhancement device according to claim 1, characterized in that, The installation components include: Two sets of brackets are symmetrically arranged at the bottom of the box. Two sets of rotating components are symmetrically arranged at one end of the two sets of brackets away from the inner wall of the box, and the output end of the rotating components is connected to the core of the PVA optical film.

3. The performance enhancement device according to claim 1, characterized in that, The air supply assembly includes: An air supply duct, one end of which is connected to the housing; A blower is installed on the air supply duct; A heating component is installed on the air supply duct and is used to regulate the air temperature inside the air supply duct. A humidity control component is installed on and connected to the air supply duct, and is used to regulate the air humidity inside the air supply duct.

4. The performance enhancement device according to claim 3, characterized in that, One end of the air supply duct is connected to an inverted U-shaped pipe, and both ends of the inverted U-shaped pipe are connected to the housing.

5. The performance enhancement device according to claim 1, characterized in that, The exhaust assembly includes: The exhaust duct is connected at one end to the housing. An exhaust fan is installed on the exhaust duct.

6. The performance enhancement device according to any one of claims 1-5, characterized in that, The exhaust assembly is provided in two sets, and the two sets of exhaust assemblies are respectively located on opposite sides of the housing.

7. The performance enhancement device according to any one of claims 1-5, characterized in that, Also includes: Two sets of circulation pipes are symmetrically arranged on the box body. One end of each circulation pipe is connected to the top of the box body, and the other end of each circulation pipe is connected to the side of the box body. Two sets of circulating fans are respectively installed on the two sets of circulating pipes.

8. The performance enhancement device according to claim 2, characterized in that, The bracket is made of stainless steel.

9. A method for improving the performance of a PVA optical film using the performance enhancement device as described in any one of claims 1-8, characterized in that, include: The PVA optical film is placed on the mounting assembly, and the PVA optical film is fixed by the mounting assembly; The mounting assembly drives the PVA optical film to rotate; Preset aging parameters, wherein the aging parameters include aging temperature, aging humidity and aging time; The air supply and exhaust components are activated to supply flowing, temperature- and humidity-controlled air into the housing. Obtain the real-time temperature and humidity inside the box; The air supply component is controlled based on the real-time temperature and humidity inside the housing.

10. The method according to claim 9, characterized in that, The aging temperature ranges from 20 to 90°C, the aging humidity ranges from 40 to 70% RH, and the aging time ranges from 2 to 72 hours.

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