High-temperature-resistant copper-clad plate with light-shielding performance and preparation method thereof

Abstract

The application belongs to the technical field of electronic components, and particularly relates to a high-temperature-resistant copper-clad plate with light-shielding performance, which comprises a rigid sheet layer and a copper foil layer, the rigid sheet layer and the copper foil layer are fixed through an adhesive layer, a covering film is arranged on the copper foil layer, the adhesive layer is formed by curing of an adhesive, the copper-clad plate is made of an alloy composite material composed of the rigid sheet and the copper foil, and replaces a traditional copper-clad plate (composed of a base material, a covering film (light-shielding CVL) and ink), so that the manufacturing process of the copper-clad plate is shortened, the process of manufacturing FPC using the copper-clad plate is shortened, the number of personnel is reduced, the process is optimized, the rigid sheet layer has good hardness and light-shielding performance, the stiffness of the copper-clad plate and the shielding of light are increased, and the rigid sheet layer also has good high-temperature resistance.

Description

Technical Field

[0001] This invention belongs to the field of electronic component technology, and particularly relates to a high-temperature resistant copper-clad laminate with light-shielding properties and its preparation method. Background Technology

[0002] Currently, electronic components are required to be thinner and have higher performance requirements. With the promotion of 5G, the requirements for FPC material manufacturers are becoming more stringent. The substrate used to make traditional copper-clad laminates has relatively poor hardness, as well as low high temperature resistance and light-shielding performance.

[0003] For example, patent application CN200810219555.X describes a copper-clad laminate structure comprising two conductor layers and at least three insulating dielectric layers located between the two conductor layers. At least one of the insulating dielectric layers is an improved insulating dielectric layer, composed of epoxy resin, a latent curing agent, a curing accelerator, and filler. The weight percentage content of each component is as follows: epoxy resin 60-90%, latent curing agent 1-15%, curing accelerator 0.01-0.3%, and filler 5-25%. The filler is an inorganic powder selected from at least one of the following: crystalline silica powder, alumina powder, magnesium hydroxide powder, aluminum hydroxide powder, chalk powder, layered silicate powder, barite powder, sepiolite powder, talc powder, and mica powder. However, the disadvantage of this technical solution is that the copper-clad laminate made from the above materials has relatively poor hardness, and its high-temperature resistance and light-shielding performance are also relatively low. Summary of the Invention

[0004] The purpose of this invention is to provide a high-temperature resistant copper-clad laminate with light-shielding properties and its preparation method, so as to solve the problems in the prior art. The specific technical solution is as follows:

[0005] A high-temperature resistant copper-clad laminate with light-shielding properties includes a steel sheet layer and a copper foil layer, which are fixed together by an adhesive layer. A cover film is provided on the copper foil layer, and the adhesive layer is formed by curing with an adhesive.

[0006] Furthermore, the adhesive comprises the following raw materials in the following weight ratios: 75-95% soluble polyimide liquid, 10-15% high-temperature resistant epoxy-modified silicone resin, 0.1-0.5% ion scavenger, 0.05-0.1% antioxidant, 5-7% curing agent, and 30% diluent.

[0007] Furthermore, the diluent is dimethylformamide or cyclohexanone.

[0008] A method for preparing a high-temperature resistant copper-clad laminate with light-shielding properties, for preparing the high-temperature resistant copper-clad laminate with light-shielding properties as described in any one of the above-mentioned methods, includes the following steps:

[0009] S1. Install the copper foil roll and the steel sheet roll on the unwinding component, and pull out the copper foil and steel sheet from the copper foil roll and the steel sheet roll respectively;

[0010] S2. Apply adhesive to the surface of the copper foil through the adhesive coating component. The coated copper foil and steel sheet pass between traction wheel one and traction wheel two, and the steel sheet is bonded to the coated copper foil.

[0011] S3. After cutting the composite copper foil and steel sheet to a preset length using the cutting component, they are placed into the curing component for curing to form a steel sheet layer, an adhesive layer, and a copper foil layer bonded together.

[0012] S4. After developing and etching the copper foil layer, a cover film is attached to it.

[0013] Furthermore, the unwinding component includes a bracket 1, on which two sliding rods are fixed. Two springs 1 are respectively sleeved on the two sliding rods. One end of each spring 1 is fixed to the bracket 1, and the other end of each spring 1 is fixed to support rod 1 and support rod 2 respectively. Support rod 1 and support rod 2 are slidably connected to the two sliding rods. Two roll material support components and a roller are rotatably connected to the bracket 1. Support rod 1 and support rod 2 are rotatably connected to the two roll material support components respectively, and support rod 2 is rotatably connected to the roller.

[0014] Furthermore, copper foil rolls and steel sheet rolls are respectively installed on the two roll support components. Copper foil is pulled out from the copper foil roll and moves forward on the upper surface of the glue collection tank. Steel sheet is pulled out from the steel sheet roll and, after passing around the roller, combines with the copper foil coated with glue by the glue coating component fixed on the bracket one. Together, they pass through the space between the traction wheel one and the traction wheel two and enter the shearing component for cutting.

[0015] Furthermore, a second motor is fixed on the glue collection tank. The output end of the second motor is connected to a first gear. The first gear and the second gear mesh and drive each other. The first gear is fixedly connected to a first traction wheel, and the second gear is fixedly connected to a second traction wheel. Both the first traction wheel and the second traction wheel are rotatably connected to the glue collection tank. The first bracket is fixedly connected to a roll material speed limiting component. The roll material speed limiting component is located between the copper foil roll and the steel sheet roll, and its two ends abut against the copper foil roll and the steel sheet roll, respectively.

[0016] Furthermore, the adhesive application component includes an adhesive tank, a flexible tube fixed to the lower end of the adhesive tank, a brush head fixed to the lower end of the flexible tube, a cylinder fixed to the lower end of the adhesive tank, the output end of the cylinder connected to the flexible tube bracket, and the flexible tube and the flexible tube bracket being fixedly connected.

[0017] Furthermore, the hose support is provided with a rack, the rack is slidably connected to the rack support, the rack support is fixedly connected to the adhesive groove, the rack meshes with the gear three for transmission, the gear three is fixedly connected to the stop bar, the stop bar rotates in the adhesive groove, the adhesive groove is provided with a limiting strip, the hose support is rotatably connected to the scraper, the scraper is fixedly connected to one end of the torsion spring, and the other end of the torsion spring is fixedly connected to the hose support.

[0018] Furthermore, the roll material speed limiting component includes a second bracket, which is fixed on a first bracket and fixedly connected to a first motor. The output end of the first motor is connected to a long rod, which rotates within the second bracket. The long rod is fixedly connected to the middle of a third rotating rod, which is hinged to a fourth rotating rod. The fourth rotating rod is rotatably connected to a slide, which slides within the second bracket. The slide is fixedly connected to one end of a second spring, and the other end of the second spring is fixedly connected to a pressure roller bracket. The slide is slidably connected to the pressure roller bracket, and a pressure roller is rotatably connected to the pressure roller bracket. Both the copper foil roll and the steel sheet roll abut against the pressure roller.

[0019] The advantages of this invention are:

[0020] Copper-clad laminates (CCLs) made from an alloy composite material consisting of steel sheets and copper foil replace traditional CCLs (composed of a substrate, a cover film (CVL for light blocking), and ink). This shortens the manufacturing process of CCLs, thereby shortening the process of manufacturing FPCs using CCLs, reducing the number of personnel, and optimizing the process. The steel sheet layer has good hardness and light blocking properties, increasing the stiffness of the CCL and blocking light. The steel sheet layer also has good high-temperature resistance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the copper-clad laminate structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the unwinding component and the coating component of the present invention;

[0023] Figure 3 This is a schematic diagram of the unwinding component structure of the present invention. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the unwinding component structure of the present invention. Figure 2 ;

[0025] Figure 5 This is a schematic diagram of the unwinding component structure of the present invention. Figure 3 ;

[0026] Figure 6 This is a schematic diagram of the unwinding component structure of the present invention. Figure 4 ;

[0027] Figure 7 This is a schematic diagram of the unwinding component structure of the present invention. Figure 5 ;

[0028] Figure 8 This is a schematic diagram of the manual turntable structure of the present invention. Figure 6 ;

[0029] Figure 9 This is a schematic diagram of the adhesive coating component structure of the present invention. Figure 1 ;

[0030] Figure 10 This is a schematic diagram of the adhesive coating component structure of the present invention. Figure 2 ;

[0031] Figure 11 for Figure 10 A magnified view of a portion of the image;

[0032] Figure 12 This is a schematic diagram of the curing component structure of the present invention. Figure 1 ;

[0033] Figure 13 This is a schematic diagram of the curing component structure of the present invention. Figure 2 ;

[0034] Figure 14 This is a schematic diagram of the curing component structure of the present invention. Figure 3 ;

[0035] Figure 15 This is a schematic diagram of the curing component structure of the present invention. Figure 4 ;

[0036] Figure 16 This is a schematic diagram of the curing component structure of the present invention. Figure 5 ;

[0037] Explanation of markings in the diagram:

[0038] a. Steel sheet layer; b. Adhesive layer; c. Copper foil layer; d. Covering film; 1. Support 1; 2. Slide rod; 3. Spring 1; 4. Center rod; 5. Rotating rod 1; 6. Support plate; 7. Moving block; 8. Slip ring; 9. Rotating rod 2; 10. Support rod 1; 11. Copper foil roll; 12. Steel sheet roll; 13. Support 2; 14. Motor 1; 15. Long rod; 16. Rotating rod 3; 17. Rotating rod 4; 18. Slide; 19. Spring 2; 20. Pressure roller support; 21. Pressure roller; 22. Glue collection tank; 23. Motor 2; 24. Gear 1; 25. Gear 2; 26. Traction wheel 1; 27. Traction wheel 2; 28. Adhesive tank; 29. 30. Hose; 31. Brush head; 32. Cylinder 1; 33. Hose bracket; 34. Rack; 35. Rack bracket; 36. Gear 3; 37. Stop bar; 38. Limiting bar; 39. Scraper; 40. Torsion spring; 41. Outer shell; 42. Door panel; 43. Ventilation hole; 44. Motor 3; 45. Fan wheel; 46. Heater; 47. Heating rod; 48. Air inlet; 49. Air outlet; 50. Cylinder 2; 51. Support column; 52. Spring 3; 53. Movable partition plate; 54. U-shaped frame 1; 55. Gear 4; 56. U-shaped frame 2; 57. Air hole; 58. Support rod 2; 59. Roller shaft; 50. Fixed partition plate. Detailed Implementation

[0039] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] Example 1

[0042] like Figure 1-16 As shown, a high-temperature resistant copper-clad laminate with light-shielding properties includes a rigid sheet layer a and a copper foil layer c. The rigid sheet layer a and the copper foil layer c are fixed together by an adhesive layer b. A cover film d is provided on the copper foil layer c. The adhesive layer b is formed by curing with an adhesive.

[0043] The working principle of the above technical solution is as follows: Copper-clad laminates are made of alloy composite materials composed of steel sheets and copper foil, replacing traditional copper-clad laminates (composed of substrate, cover film (light-shielding CVL) and ink). This shortens the manufacturing process of copper-clad laminates, thereby shortening the process of manufacturing FPCs using copper-clad laminates, reducing personnel, and optimizing the process. The steel sheet layer a has good hardness and light-shielding properties, increasing the stiffness of the copper-clad laminate and blocking light. The steel sheet layer a also has good high-temperature resistance.

[0044] Example 2

[0045] like Figure 1-16 As shown, the adhesive comprises the following raw materials in the following weight ratios: 75-95% soluble polyimide liquid, 10-15% high-temperature resistant epoxy-modified silicone resin, 0.1-0.5% ion scavenger, 0.05-0.1% antioxidant, 5-7% curing agent, and 30% diluent;

[0046] The diluent is dimethylformamide or cyclohexanone;

[0047] The working principle of the above technical solution is as follows: Mix the following raw materials in the indicated weight ratios: 75-95% soluble polyimide liquid, 10-15% high-temperature resistant epoxy modified silicone resin, 0.1-0.5% ion capture agent, 0.05-0.1% antioxidant, 5-7% curing agent, and diluent. Disperse the above mixed raw materials using a high-speed disperser for 1-2 hours. The speed of the high-speed disperser is 800-1200 r / min. To avoid excessively high temperatures during the dispersion process, a constant temperature water bath is added inside to maintain the dispersion temperature between 25-30℃.

[0048] Example 3

[0049] like Figure 1-16 As shown, a method for preparing a high-temperature resistant copper-clad laminate with light-shielding properties, used to prepare the high-temperature resistant copper-clad laminate with light-shielding properties described in any of the above-mentioned embodiments, includes the following steps:

[0050] S1. Install the copper foil roll 11 and the steel sheet roll 12 on the unwinding component, and pull out the copper foil and steel sheet from the copper foil roll 11 and the steel sheet roll 12 respectively;

[0051] S2. Apply adhesive to the surface of the copper foil through the adhesive application component. The coated copper foil and steel sheet pass between the traction wheel 1 26 and the traction wheel 2 27, and the steel sheet is bonded to the coated copper foil.

[0052] S3. After cutting the composite copper foil and steel sheet to a preset length using the cutting component, they are placed into the curing component for curing to form a steel sheet layer a, an adhesive layer b, and a copper foil layer c bonded together.

[0053] S4. After developing and etching the copper foil layer c, a cover film d is attached to it;

[0054] The working principle of the above technical solution is as follows: Copper foil roll 11 and steel sheet roll 12 are installed on the unwinding component. Copper foil and steel sheet are pulled out from copper foil roll 11 and steel sheet roll 12 respectively. Adhesive is applied to the surface of copper foil through the adhesive coating component. The steel sheet is laminated on the adhesive copper foil. Copper foil, steel sheet and adhesive between them pass through the traction wheel 26 and traction wheel 27 and enter the shearing component for cutting. The shearing component cuts them into preset equidistant lengths. The cut copper foil is copper foil layer c, and the cut steel sheet is steel sheet layer a. The combination of copper foil layer c, steel sheet layer a and adhesive between them is placed in the curing component for curing. The adhesive is cured into adhesive layer b. After developing and etching on copper foil layer c, cover film d is attached to it, thereby completing the preparation of copper-clad laminate.

[0055] Example 4

[0056] like Figure 1-16 As shown, the unwinding component includes a bracket 1, on which two sliding rods 2 are fixed. Two springs 3 are respectively sleeved on the two sliding rods 2. One end of each spring 3 is fixed to the bracket 1, and the other end of each spring 3 is fixed to a support rod 10 and a support rod 2 57, respectively. The support rod 10 and the support rod 2 57 are slidably connected to the two sliding rods 2. Two roll material support components and a roller 58 are rotatably connected to the bracket 1. The support rod 10 and the support rod 2 57 are rotatably connected to the two roll material support components, and the support rod 2 57 is rotatably connected to the roller 58.

[0057] Two roll support components are respectively equipped with copper foil roll 11 and steel sheet roll 12. Copper foil is pulled out from copper foil roll 11 and moves forward on the upper surface of glue collection tank 22. Steel sheet is pulled out from steel sheet roll 12. After the steel sheet passes around roller 58, it combines with the copper foil coated with glue by the glue coating component fixed on bracket 1. Together they pass through the traction wheel 26 and traction wheel 27 and enter the shearing component for cutting.

[0058] The roll support component includes a central rod 4, a rotating rod 5, a support plate 6, a moving block 7, a slip ring 8, a rotating rod 9, and a support rod 10. One end of the support rod 10 is rotatably mounted on the bracket 1, and the other end of the support rod 10 is rotatably connected to the support rod 10. The central rod 4 is rotatably connected to one end of the rotating rod 5, and the other end of the rotating rod 5 is rotatably connected to the support plate 6. The support plate 6 is supported inside the copper foil roll 11. The central rod 4 is threadedly connected to the moving block 7, and the moving block 7 is rotatably connected to the slip ring 8. The slip ring 8 is rotatably connected to one end of the rotating rod 9, and the other end of the rotating rod 9 is rotatably connected to the support plate 6.

[0059] The working principle of the above technical solution is as follows: Rotating the moving block 7 causes it to rotate threadedly on the central rod 4, moving it closer to the support rod 10. This causes the slip ring 8 to move in one direction, driving the four rotating rods 9 to rotate, which in turn drives the four sets of rotating rods 5 to rotate, causing the four support plates 6 to move together. This pulls the support rod 10 backward, causing it to slide towards its end on the slide rod 2, stretching the spring 3. When the support rod 10 slides to the end of the slide rod 2, one end of the support rod 10 separates from the central rod 4, while the other end can rotate with the slide rod 2. The copper foil roll 11 is then inserted from the end of the central rod 4, and the copper foil roll 11 is fitted onto the outside of the four support plates 6. Rotating the support rod 10 returns it to its initial position. Then, rotating the moving block 7 again in the opposite direction moves it away from the support rod 10. The slip ring 8 moves in one direction along with the moving block 7, causing the four rotating rods 9 to rotate, which in turn causes the four sets of rotating rods 5 to rotate, and the four support plates 6 to move outward. The four support plates 6 support the copper foil roll 11. The function of the support rod 10 is to support the end of the center rod 4. The installation method of the steel sheet roll 12 is the same as that of the copper foil roll 11. Copper foil is pulled out from the copper foil roll 11, causing the copper foil roll 11 to rotate together with the center rod 4 on the bracket 1. The copper foil moves forward on the upper surface of the glue collection tank 22. The copper foil is laid on the upper surface of the glue collection tank 22, which facilitates the glue application component to apply glue to the upper surface of the copper foil. The steel sheet is pulled out from the steel sheet roll 12, causing the steel sheet roll 12 to rotate together with another center rod 4 on the bracket 1. After the steel sheet passes around the roller 58, it combines with the glued copper foil and passes through the traction wheel 26 and traction rod 27 together, entering the shearing component for cutting.

[0060] Example 5

[0061] like Figure 1-16 As shown, a second motor 23 is fixed on the glue collection tank 22. The output end of the second motor 23 is connected to a first gear 24. The first gear 24 and the second gear 25 mesh and drive each other. The first gear 24 is fixedly connected to a first traction wheel 26. The second gear 25 is fixedly connected to a second traction wheel 27. The first traction wheel 26 and the second traction wheel 27 are both rotatably connected to the glue collection tank 22. The bracket 1 is fixedly connected to the roll speed limiting component. The roll speed limiting component is located between the copper foil roll 11 and the steel sheet roll 12. The two ends of the roll speed limiting component abut against the copper foil roll 11 and the steel sheet roll 12, respectively.

[0062] The working principle of the above technical solution is as follows: Starting motor 23 drives gear 1 24 to rotate, which in turn drives gear 25 to rotate, which in turn drives traction wheel 1 26 and traction wheel 2 27 to rotate. Traction wheel 1 26 and traction wheel 2 27 pull the copper foil and steel sheet forward. The speed limiting component of the roll material applies low pressure to the copper foil roll 11 and steel sheet roll 12 to prevent them from rotating automatically. This ensures that the pulled-out copper foil and steel sheet have a certain tension, preventing wrinkles or bends in the copper foil and steel sheet.

[0063] Example 6

[0064] like Figure 1-16 As shown, the adhesive application component includes an adhesive tank 28, a hose 29 fixed to the lower end of the adhesive tank 28, a brush head 30 fixed to the lower end of the hose 29, a cylinder 31 fixed to the lower end of the adhesive tank 28, the output end of the cylinder 31 being connected to a hose bracket 32, and the hose 29 being fixedly connected to the hose bracket 32.

[0065] The hose support 32 is provided with a rack 33, which is slidably connected to the rack support 34. The rack support 34 is fixedly connected to the adhesive groove 28. The rack 33 is meshed with a gear 35 for transmission. The gear 35 is fixedly connected to a stop bar 36. The stop bar 36 rotates within the adhesive groove 28. A limiting bar 37 is provided within the adhesive groove 28. The hose support 32 is rotatably connected to a scraper 38. The scraper 38 is fixedly connected to one end of a torsion spring 39. The other end of the torsion spring 39 is fixedly connected to the hose support 32.

[0066] The working principle of the above technical solution is as follows: Adhesive is placed in the adhesive tank 28, and enters the hose 29 from the bottom of the adhesive tank 28, then into the brush head 30. The brush head 30 contacts the copper foil. As the copper foil slides forward on the adhesive collection tank 22, friction occurs between the brush head 30 and the copper foil, and the adhesive is applied to the surface of the copper foil through the brush head 30. Simultaneously, the scraper 38 spreads the adhesive evenly. The torsion spring 39 applies a torque to the scraper 38, ensuring that the tip of the scraper 38 remains constantly... When the adhesive application is completed, cylinder 31 is activated, which moves hose bracket 32 ​​upward. Hose bracket 32 ​​pulls the lower end of hose 29 upward, which in turn moves brush head 30 and scraper 38 upward, separating them from the copper foil. As hose bracket 32 ​​moves upward, it moves rack 33 upward, causing rack 33 to slide against rack bracket 34. This causes gear 35 to rotate, which in turn rotates stop bar 36. The front end of stop bar 36 then presses against limit bar 37, thus sealing hose 29 and preventing adhesive from falling.

[0067] Example 7

[0068] like Figure 1-16As shown, the roll material speed limiting component includes a second bracket 13, which is fixed on a first bracket 1. The second bracket 13 is fixedly connected to a first motor 14. The output end of the first motor 14 is connected to a long rod 15. The long rod 15 rotates within the second bracket 13. The long rod 15 is fixedly connected to the middle of a third rotating rod 16. The third rotating rod 16 is hinged to a fourth rotating rod 17. The fourth rotating rod 17 is rotatably connected to a slide 18. The slide 18 slides within the second bracket 13. The slide 18 is fixedly connected to one end of a second spring 19. The other end of the second spring 19 is fixedly connected to a pressure roller bracket 20. The slide 18 is slidably connected to the pressure roller bracket 20. A pressure roller 21 is rotatably connected to the pressure roller bracket 20. Both the copper foil roll 11 and the steel sheet roll 12 abut against the pressure roller 21.

[0069] The working principle of the above technical solution is as follows: After the copper foil roll 11 and the steel sheet roll 12 are respectively installed on the two roll support components, the motor 14 is started to drive the rotating rod 3 16 to rotate, which in turn drives the two rotating rods 4 17 to rotate, which in turn drives the two slides 18 to move in opposite directions within the bracket 2 13, which in turn drives the two sets of pressure roller brackets 20 and pressure rollers 21 to move in opposite directions. When the two sets of pressure rollers 21 are respectively pressed against the copper foil roll 11 and the steel sheet roll 12, the slides 18 continue to descend, which causes the spring 2 19 to be stretched. Under the action of the tension of the spring 2 19, even if the diameter of the copper foil roll 11 and the steel sheet roll 12 decreases during use, the pressure rollers 21 still exert pressure on them, preventing the copper foil roll 11 and the steel sheet roll 12 from rotating at will, so that the pulled copper foil and steel sheet have a certain tension, preventing the copper foil and steel sheet from wrinkling or bending.

[0070] Example 8

[0071] like Figure 1-16 As shown, the curing component includes a housing 40, a door panel 41 rotatably connected to the side of the housing 40, a ventilation hole 42 on the door panel 41, a motor 43 fixed to the side of the housing 40, the output end of the motor 43 connected to a fan 44, the fan 44 rotating inside the housing 40, a heater 45 fixed to the side of the housing 40, a heating rod 46 connected to the output end of the heater 45, the heating rod 46 inserted into the fan 44, an air inlet 47 on the side of the housing 40, an air outlet 48 inside the housing 40, and a cylinder 49 fixedly connected to the housing 40, the output end of the cylinder 49 passing through the housing 40 and abutting against a U-shaped frame 53. Four support columns 50 are fixed, and a fixed partition plate 59 is fixed in the middle of the four support columns 50. Multiple movable partition plates 52 are provided on both sides of the fixed partition plate 59. The multiple movable partition plates 52 are slidably connected to the support columns 50. Air holes 56 are provided in both the fixed partition plate 59 and the movable partition plates 52. A spring 51 is provided between two movable partition plates 52. A gear 54 is rotatably connected to the fixed partition plate 59. The gear 54 meshes with the gear of the first U-shaped frame 53 and the gear of the second U-shaped frame 55.

[0072] The working principle of the above technical solution is as follows: Open the door panel 41, insert the cut copper foil and steel sheet, along with the uncured adhesive between them, between the two movable partition plates 52 or between the movable partition plate 52 and the fixed partition plate 59. After filling, close the door panel 41, start the cylinder 2 49, which drives the U-shaped frame 1 53 forward, drives the gear 4 54 to rotate, drives the U-shaped frame 2 55 to move, and the U-shaped frame 1 53 and U-shaped frame 2 55 move together, causing the movable partition plates 52 on both sides of the fixed partition plate 59 to move towards the fixed partition plate 59, which in turn compresses the multiple springs 3 51. Multiple copper foils and steel sheets, along with the uncured adhesive between them, are clamped together. The heater 45 is activated to heat the heating rod 46. The motor 43 is started, driving the impeller 44 to rotate. Outside air enters the impeller 44 through the air inlet 47 and is heated by the heating rod 46. Under the rotation of the impeller 44, hot air is blown into the outer casing 40 through the air outlet 48. The hot air passes through the air hole 56 and is discharged through the ventilation hole 42. When the hot air passes through the air hole 56, it can fully heat the copper foils and steel sheets, along with the uncured adhesive between them, and quickly cure the adhesive between the copper foils and steel sheets.

[0073] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A method for preparing a high-temperature resistant copper-clad laminate with light-shielding properties, characterized in that, Includes the following steps: S1. Install the copper foil roll (11) and the steel sheet roll (12) on the unwinding component, and pull out the copper foil and steel sheet from the copper foil roll (11) and the steel sheet roll (12) respectively; S2. Apply adhesive to the surface of the copper foil through the adhesive coating component. The coated copper foil and steel sheet pass between the first traction wheel (26) and the second traction wheel (27) to bond the steel sheet to the coated copper foil. S3. After cutting the composite copper foil and steel sheet to a preset length using the cutting component, they are placed into the curing component for curing to form a steel sheet layer (a), an adhesive layer (b), and a copper foil layer (c) that are bonded together. S4. After developing and etching the copper foil layer (c), a cover film (d) is attached to it. The unwinding component includes a first bracket (1), which is fixedly connected to a roll speed limiting component. The roll speed limiting component includes a second bracket (13), which is fixed on the first bracket (1) and fixedly connected to a first motor (14). The output end of the first motor (14) is connected to a long rod (15), which rotates within the second bracket (13). The long rod (15) is fixedly connected to the middle of a third rotating rod (16), which is connected to a fourth rotating rod. (17) Hinged connection, the fourth rotating rod (17) is rotatably connected to the slide (18), the slide (18) slides in the second bracket (13), the slide (18) is fixedly connected to one end of the second spring (19), the other end of the second spring (19) is fixedly connected to the pressure wheel bracket (20), the slide (18) is slidably connected to the pressure wheel bracket (20), the pressure wheel bracket (20) is rotatably connected to the pressure wheel bracket (20), the copper foil roll (11) and the steel sheet roll (12) both abut against the pressure wheel (21); The starting motor (14) drives the rotating rod (16) to rotate, which in turn drives the two rotating rods (17) to rotate, which in turn drives the two slides (18) to move in opposite directions within the support (13), which in turn drives the two sets of pressure roller supports (20) and pressure rollers (21) to move in opposite directions. When the two sets of pressure rollers (21) press against the copper foil roll (11) and the steel sheet roll (12) respectively, the slides (18) continue to descend, which causes the spring (29) to be stretched. Under the action of the tension of the spring (29), even if the diameter of the copper foil roll (11) and the steel sheet roll (12) decreases during use, the pressure roller (21) still has a pressure on them, preventing the copper foil roll (11) and the steel sheet roll (12) from rotating randomly, so that the pulled copper foil and steel sheet have a certain tension, preventing the copper foil and steel sheet from wrinkling or bending.

2. The method for preparing a high-temperature resistant copper-clad laminate with light-shielding properties according to claim 1, characterized in that, Two slide rods (2) are fixed on the bracket (1). Two springs (3) are respectively sleeved on the two slide rods (2). One end of each spring (3) is fixed on the bracket (1), and the other end of each spring (3) is fixed on the support rod (10) and the support rod (2) (57). The support rod (10) and the support rod (2) (57) are slidably connected to the two slide rods (2). Two roll material support components and a roller (58) are rotatably connected on the bracket (1). The support rod (10) and the support rod (2) (57) are rotatably connected to the two roll material support components. The support rod (2) (57) is rotatably connected to the roller (58).

3. The method for preparing a high-temperature resistant copper-clad laminate with light-shielding properties according to claim 2, characterized in that, The two roll support components are respectively equipped with copper foil rolls (11) and steel sheet rolls (12). Copper foil is pulled out from the copper foil roll (11) and moves forward on the upper surface of the glue collection tank (22). Steel sheet is pulled out from the steel sheet roll (12). After the steel sheet passes around the roller (58), it combines with the copper foil coated by the glue coating component fixed on the bracket (1) and passes through the traction wheel (26) and traction wheel (27) together to enter the shearing component for cutting.

4. The method for preparing a high-temperature resistant copper-clad laminate with light-shielding properties according to claim 3, characterized in that, The glue collection tank (22) is fixed with a second motor (23). The output end of the second motor (23) is connected to a first gear (24). The first gear (24) and the second gear (25) mesh and drive each other. The first gear (24) is fixedly connected to a first traction wheel (26). The second gear (25) is fixedly connected to a second traction wheel (27). The first traction wheel (26) and the second traction wheel (27) are both rotatably connected to the glue collection tank (22). The roll speed limiting component is located between the copper foil roll (11) and the steel sheet roll (12). The two ends of the roll speed limiting component abut against the copper foil roll (11) and the steel sheet roll (12) respectively.

5. The method for preparing a high-temperature resistant copper-clad laminate with light-shielding properties according to claim 4, characterized in that, The adhesive application component includes an adhesive tank (28), a hose (29) fixed at the lower end of the adhesive tank (28), a brush head (30) fixed at the lower end of the hose (29), a cylinder (31) fixed at the lower end of the adhesive tank (28), the output end of the cylinder (31) being connected to a hose bracket (32), and the hose (29) being fixedly connected to the hose bracket (32).

6. The method for preparing a high-temperature resistant copper-clad laminate with light-shielding properties according to claim 5, characterized in that, The hose support (32) is provided with a rack (33), the rack (33) is slidably connected to the rack support (34), the rack support (34) is fixedly connected to the adhesive groove (28), the rack (33) is meshed with the gear three (35) for gear transmission, the gear three (35) is fixedly connected to the stop bar (36), the stop bar (36) rotates in the adhesive groove (28), the adhesive groove (28) is provided with a limiting bar (37), the hose support (32) is rotatably connected to the scraper (38), the scraper (38) is fixedly connected to one end of the torsion spring (39), and the other end of the torsion spring (39) is fixedly connected to the hose support (32).

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