A method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate

Abstract

The present invention discloses a method for manufacturing a halogen-free, high-TG, high-frequency, and high-speed copper-clad laminate, comprising the following steps: Step 1, solution preparation: mixing to obtain a liquid crystal polymer solution; Step 2, film pressurization and superposition: conveying the obtained liquid crystal polymer solution to a coating device for coating, unwinding a copper foil roll, conveying it through a machine, and roughening the copper foil. The present invention relates to the technical field of copper-clad laminate production. When not in use, this method for manufacturing a halogen-free, high-TG, high-frequency, and high-speed copper-clad laminate causes the internal glue to solidify due to downtime, affecting the secondary use effect. The glue is recovered by a recovery mechanism, and the working state and recovery state can be freely switched by interchanging the positions of the collection cylinder and the top block. The recovered glue can be reused without affecting the coating effect of residual glue in the coating device when processing is restarted.

Description

Technical Field

[0001] The invention relates to the technical field of copper clad laminate production, and in particular to a method for producing a halogen-free high-TG high-frequency high-speed copper clad laminate. Background Art

[0002] Traditional copper-clad laminates (CCLs) are made by impregnating electronic fiberglass cloth or other reinforcing materials with resin, coating one or both sides with copper foil, and then hot-pressing. With the development of CCL materials, more and more auxiliary materials are added to the adhesive. During the impregnation of the reinforcing material and the curing process, defects such as air bubbles and uneven prepreg composition are prone to appear, leading to problems such as reduced yield in CCL production.

[0003] According to the copper-based resin prepreg production equipment for mobile communication circuit boards described in patent number CN109551247A, the following problems exist during use:

[0004] (1) When not in use, the machine will stop and cause the internal glue to solidify, affecting the effect of secondary use and affecting the coating effect of the residual glue in the coating device when the process is restarted.

[0005] (2) Frosting treatment causes debris on the surface, affecting the quality of subsequent finished products. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate, which solves the above-mentioned problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate comprises the following steps:

[0008] Step 1, solution preparation: mixing to obtain a liquid crystal polymer solution;

[0009] Step 2, film pressurization and superposition: the obtained liquid crystal polymer solution is transported to the coating device for coating, the copper foil roll is unwound, and it is transported through the machine to perform rough treatment on the copper foil. At this time, the grinding roller rotates, and the abrasive on its surface rubs against the surface of the copper foil, so that the surface roughness of the copper foil is increased, and fine particles are generated on the surface of the copper foil. Then, dust removal is performed. At this time, the air outlet in the air outlet box is supplied with air through the air source, and the air outlet blows the debris on the surface of the copper foil into the storage box, and collects it through the collection box. At this time, the cleaning wheel rotates to drive the cleaning brush to clean the surface of the copper foil to ensure that there is no debris and other impurities on the surface. At this time, the heating device inside the machine heats the copper foil by heat radiation, and then the lower end of the extrusion part of the coating device extrudes a thin layer of resin onto the upper surface of the copper foil. The resin thin layer is heated to a semi-cured state, and the copper-based resin semi-cured sheet has been initially formed. It continues to be transported backward to adjust the position of the coating device. By adjusting the extension length of the driving electric push rod, the lifting block is driven to slide up and down in the support frame to adjust the position of the coating device;

[0010] Step 3: Cutting: Cut the copper foil to a fixed length using a cutting frame;

[0011] Step 4: Stop the machine: After the coating is completed, the recovery mechanism is used to recover the coating. The second driving cylinder is started and the piston rod of the second driving cylinder is retracted. At this time, the top block loses its support and slides down from the chute and falls into the mobile rack. At this time, the first driving cylinder is started to drive the mobile rack to slide in the mounting rack, and the collecting cylinder is driven to move to the top of the top block. Then the second driving cylinder is started, and the second driving cylinder is lifted to lift the collecting cylinder. The collecting cylinder is lifted into the chute. At this time, the solution in the coating device is transported to the collecting cylinder.

[0012] Step 5: Copper foil covering: hot pressing and laminating the prepared polymer film plate on both sides or one side to obtain a copper clad plate;

[0013] Step 6: Cutting and polishing: Send the hot-pressed composite copper clad laminate to the cutting and polishing equipment for secondary processing.

[0014] As a further solution of the present invention: during the roughening treatment in step 1: the grinding roller rotates, and the abrasive on its surface rubs against the surface of the copper foil, thereby increasing the surface roughness of the copper foil and generating fine particles on the surface of the copper foil.

[0015] As a further solution of the present invention: when the dust removal treatment is performed in step one: air is supplied to the air outlet in the air outlet box through the air source, and the air outlet blows the debris on the surface of the copper foil into the storage box, and is collected by the collection box. At this time, the cleaning wheel rotates to drive the cleaning brush to clean the surface of the copper foil to ensure that there is no debris and other impurities on the surface.

[0016] As a further solution of the present invention: in step 1, the lifting electric push rod in the first fixed frame is activated to drive the grinding roller to move up and down, so as to adjust the distance between the grinding roller and the copper foil.

[0017] As a further solution of the present invention: when adjusting the position of the coating device in step 1: by adjusting the extension length of the driving electric push rod, the lifting block is driven to slide up and down in the support frame to adjust the position of the coating device.

[0018] As a further solution of the present invention: when recycling is performed through the recycling mechanism in step four: start the second driving cylinder and retract the piston rod of the second driving cylinder. At this time, the top block loses its support, slides down from the chute and falls into the movable rack. At this time, start the first driving cylinder to drive the movable rack to slide in the mounting rack, and drive the collecting cylinder to move to the top of the top block. Then start the second driving cylinder, and the second driving cylinder rises to lift the collecting cylinder. The collecting cylinder is lifted into the chute. At this time, the solution in the coating device is transported to the collecting cylinder.

[0019] As a further solution of the present invention: a heating mechanism is built into the collecting cylinder to prevent the solution from solidifying and forming in the coating device after shutdown. When coating is required, the top block only needs to be moved into the chute and raised to support the copper foil again.

[0020] The adhesive supply equipment includes a machine table, the top of the machine table is provided with a conveying mechanism for conveying copper foil, the top of the machine table is fixedly connected with a jacking electric push rod, the top of the jacking electric push rod is fixedly connected with a first fixing frame, the inner cavity of the first fixing frame is rotatably connected with a grinding roller, the top of the machine table is also fixedly connected with a second fixing frame, one side of the second fixing frame is rotatably connected with a sweeping wheel, the surface of the sweeping wheel is fixedly connected with a sweeping brush bristles, the machine table is located between the first fixing frame and the second fixing frame, and both sides of the surface are fixedly connected with an air outlet box and a receiving box respectively, the air outlet box is connected with an air source, and a blowing port facing the receiving box is opened on the surface, a receiving groove facing the blowing port is opened on one side of the receiving box, and the bottom of the receiving box is connected with a collecting box, the top of the machine table is fixedly connected with a supporting frame, the inner cavity of the supporting frame is slidably connected with a lifting block, and one side of the lifting block is fixedly connected with a coating device, Base comprises support, castor, and frame upper is provided with guide rail, and support and conveyer frames movable end contact site are provided with recoil spring, and castor is arranged on the pin of base bottom four, to carry mobile handler location.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention, when not in use, will cause the internal glue to solidify due to downtime, affecting the secondary use effect. It can be recovered through the recovery mechanism. By exchanging the positions of the collecting cylinder and the top block, the working state and the recovery state can be freely switched. The recovered glue can be reused without affecting the coating effect of the residual glue in the coating device when the processing is restarted.

[0023] 2. In the present invention, after frosting treatment, air is supplied to the air outlet in the air outlet box through the air source, and the air outlet blows the debris on the surface of the copper foil into the storage box, and is collected by the collection box. At this time, the cleaning wheel rotates to drive the cleaning brush to clean the surface of the copper foil to ensure that there is no debris and other impurities on the surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the glue supply equipment of the present invention;

[0025] Figure 2 For the present invention Figure 1 A partial enlarged view of point A in the middle;

[0026] Figure 3 For the present invention Figure 1 A partial enlarged view of point B in the middle;

[0027] Figure 4 It is a structural schematic diagram of the collection box of the present invention.

[0028] In the figure: 1. Machine; 2. Support frame; 3. Driving electric push rod; 4. Lifting block; 5. Lifting electric push rod; 6. First fixed frame; 7. Sanding roller; 8. Second fixed frame; 9. Cleaning wheel; 10. Cleaning brush; 11. Storage box; 12. Collection box; 13. Air outlet box; 14. Air outlet; 15. Mounting frame; 16. Moving frame; 17. Guide wheel; 18. Top block; 19. Collection cylinder; 20. Slide; 21. First driving cylinder; 22. Connecting frame; 23. Second driving cylinder; 24. Cutting frame; 25. Coating device. DETAILED DESCRIPTION

[0029] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0030] See also Figure 1-4 The present invention provides a technical solution: a method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate, comprising the following steps:

[0031] Step 1, solution preparation: mixing to obtain a liquid crystal polymer solution;

[0032] Step 2, film pressurization and superposition: The obtained liquid crystal polymer solution is transported to the coating device 25 for coating, the copper foil roll is unwound, and is transported through the machine 1 to perform rough treatment on the copper foil. At this time, the grinding roller 7 rotates, and the abrasive on its surface rubs against the surface of the copper foil, which increases the surface roughness of the copper foil and produces fine particles on the surface of the copper foil. Then, dust removal is performed. At this time, the air source is used to supply air to the blowing port 14 in the air outlet box 13, and the blowing port 14 blows the debris on the surface of the copper foil into the storage box 11, and collects it through the collection box 12. When the cleaning wheel 9 rotates, the cleaning brush 10 is driven to clean the surface of the copper foil to ensure that there is no debris or other impurities on the surface. At this time, the heating device inside the machine 1 heats the copper foil by heat radiation, and then the lower end of the extrusion part of the coating device 25 extrude a thin layer of resin onto the upper surface of the copper foil. The resin layer is heated to a semi-cured state, and the copper-based resin prepreg has been initially formed. It continues to be transported backward to adjust the position of the coating device 25. By adjusting the extension length of the driving electric push rod 3, the lifting block 4 is driven to slide up and down in the support frame 2 to adjust the position of the coating device 25.

[0033] Step 3: Cutting: Cut the copper foil to a fixed length using the cutting frame 24;

[0034] Step 4, shutdown: After coating is completed, the recovery mechanism is used for recovery, and the second driving cylinder 23 is started to retract the piston rod of the second driving cylinder 23. At this time, the top block 18 loses its support and slides down from the chute 20 and falls into the movable frame 16. At this time, the first driving cylinder 21 is started to drive the movable frame 16 to slide in the mounting frame 15, and the collecting cylinder 19 is driven to move to the top of the top block 18. Then the second driving cylinder 23 is started, and the second driving cylinder 23 is lifted to lift the collecting cylinder 19. The collecting cylinder 19 is lifted into the chute 20. At this time, the solution in the coating device 25 is transported to the collecting cylinder 19.

[0035] Step 5: Copper foil covering: hot pressing and laminating the prepared polymer film plate on both sides or one side to obtain a copper clad plate;

[0036] Step 6: Cutting and polishing: Send the hot-pressed composite copper clad laminate to the cutting and polishing equipment for secondary processing.

[0037] During the roughening treatment in step 1: the grinding roller 7 rotates, and the abrasive on its surface rubs against the surface of the copper foil, thereby increasing the surface roughness of the copper foil and generating fine particles on the surface of the copper foil.

[0038] During the dust removal process in step 1: air is supplied to the blowing port 14 in the air outlet box 13 through the air source, and the blowing port 14 blows the debris on the surface of the copper foil into the storage box 11, and is collected by the collection box 12. At this time, the cleaning wheel 9 rotates to drive the cleaning brush 10 to clean the surface of the copper foil to ensure that there is no debris and other impurities on the surface.

[0039] In step 1, the lifting electric push rod 5 in the first fixing frame 6 is activated to drive the grinding roller 7 to move up and down, thereby adjusting the distance between the grinding roller 7 and the copper foil.

[0040] When adjusting the position of the coating device 25 in step 1: by adjusting the extension length of the driving electric push rod 3, the lifting block 4 is driven to slide up and down in the support frame 2 to adjust the position of the coating device 25.

[0041] When recycling is performed through the recycling mechanism in step 4: start the second driving cylinder 23, retract the piston rod of the second driving cylinder 23, at this time the top block 18 loses its support, slides down from the chute 20 and falls into the movable rack 16. At this time, start the first driving cylinder 21 to drive the movable rack 16 to slide in the mounting rack 15, and drive the collecting cylinder 19 to move to the top of the top block 18, and then start the second driving cylinder 23, the second driving cylinder 23 rises to lift the collecting cylinder 19, and the collecting cylinder 19 rises into the chute 20. At this time, the solution in the coating device 25 is transported to the collecting cylinder 19.

[0042] The collecting cylinder 19 has a built-in heating mechanism to prevent the solution from solidifying in the coating device 25 after shutdown. When coating is required, the top block 18 only needs to be moved into the chute 20 and raised to support the copper foil again.

[0043] The glue supply equipment includes a machine 1, and a conveying mechanism for conveying copper foil is provided on the top of the machine 1. The top of the machine 1 is fixedly connected to a lifting electric push rod 5, and the top of the lifting electric push rod 5 is fixedly connected to a first fixed frame 6. The inner cavity of the first fixed frame 6 is rotatably connected to a grinding roller 7. The top of the machine 1 is also fixedly connected to a second fixed frame 8, and one side of the second fixed frame 8 is rotatably connected to a cleaning wheel 9. The surface of the cleaning wheel 9 is fixedly connected to a cleaning brush 10. The machine 1 is located between the first fixed frame 6 and the second fixed frame 8. On both sides of the surface, an air outlet box 13 and a storage box 11 are fixedly connected. The air outlet box 13 is connected to the air source, and a surface is provided with a door facing the storage box 11. The blowing port 14 of the storage box 11 is provided with a storage groove facing the blowing port 14. After frosting, the air source is used to supply air to the blowing port 14 in the air outlet box 13. The blowing port 14 blows the debris on the surface of the copper foil into the storage box 11, and collects it through the collection box 12. At this time, the cleaning wheel 9 rotates to drive the cleaning brush 10 to clean the surface of the copper foil to ensure that there is no debris and other impurities on the surface. The bottom of the storage box 11 is connected to the collection box 12. The top of the machine 1 is fixedly connected to the support frame 2. The inner cavity of the support frame 2 is slidably connected to the lifting block 4. One side of the lifting block 4 is fixedly connected to the coating device 25. The top of the lifting block 4 is fixedly connected There is a driving electric push rod 3, the bottom end of the piston rod of the driving electric push rod 3 is fixedly connected to the top of the coating device 25, the inner cavity of the machine 1 is fixedly connected to the mounting frame 15, the top of the mounting frame 15 is movably connected to the mobile frame 16, the bottom of the mobile frame 16 is connected to a guide wheel 17 that is rolled and connected to the top of the mounting frame 15, and the top of the mobile frame 16 is slidably connected to the top block 18 and the collecting cylinder 19, which are both lifted and slidably arranged in the inner cavity of the mobile frame 16. The bottom of the mounting frame 15 is fixedly connected to the first driving cylinder 21, one end of the first driving cylinder 21 is fixedly connected to the bottom of the mobile frame 16, and the bottom of the mounting frame 15 is fixedly connected to the connecting wheel 17. The connecting frame 22 has a second driving cylinder 23 fixedly connected to the top of the connecting frame 22. The top of the piston rod of the second driving cylinder 23 passes through and extends to the bottom of the movable frame 16. The inner cavity of the machine 1 is provided with a slide groove 20 which is slidably connected to the surface of the top block 18 and the collecting cylinder 19. A cutting frame 24 is provided on one side of the machine 1. When not in use, the shutdown will cause the internal glue to solidify, affecting the secondary use effect. It is recycled through the recycling mechanism. By exchanging the positions of the collecting cylinder 19 and the top block 18, the working state and the recycling state can be switched freely. The recycled glue can be reused without affecting the coating effect of the residual glue in the coating device 25 when the processing is restarted.

[0044] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate, characterized by: The following steps are involved: Step 1, solution preparation: mixing to obtain a liquid crystal polymer solution; Step 2, film pressurization and superposition: the obtained liquid crystal polymer solution is transported to the coating device (25) for coating, the copper foil roll is unwound, and it is transported through the machine (1), the copper foil is roughened, and then the ash is removed to ensure that there is no debris or other impurities on the surface. At this time, the heating device inside the machine (1) heats the copper foil by heat radiation, and then the lower end of the extrusion part of the coating device (25) extrude a thin layer of resin onto the upper surface of the copper foil. The resin thin layer is heated to a semi-cured state, and the copper-based resin semi-cured sheet has been initially formed. It continues to be transported backward, and the position of the coating device (25) is adjusted; Step 3: Cutting: Cut the copper foil to a fixed length using a cutting frame (24); Step 4: Stopping the machine: After coating is completed, the solution in the coating device (25) is recovered by the recovery mechanism and transported to the collecting cylinder (19); Step 5: Copper foil covering: hot pressing and laminating the prepared polymer film plate on both sides or one side to obtain a copper clad plate; Step 6: Cutting and polishing: Send the hot-pressed composite copper clad laminate to the cutting and polishing equipment for secondary processing.

2. The method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate according to claim 1, characterized in that: During the roughening treatment in step 1: the grinding roller (7) rotates, and the abrasive on its surface rubs against the surface of the copper foil, thereby increasing the surface roughness of the copper foil and generating fine particles on the surface of the copper foil.

3. The method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate according to claim 1, characterized in that: When the dust removal process is performed in step 1: air is supplied to the blowing port (14) in the air outlet box (13) through the air source, and the blowing port (14) blows the debris on the surface of the copper foil into the storage box (11), and is collected by the collection box (12). At this time, the cleaning wheel (9) rotates to drive the cleaning brush (10) to clean the surface of the copper foil to ensure that there is no debris or other impurities on the surface.

4. The method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate according to claim 1, characterized in that: In step 1, the lifting electric push rod (5) in the first fixed frame (6) is activated to drive the grinding roller (7) to move up and down, thereby adjusting the distance between the grinding roller (7) and the copper foil.

5. The method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate according to claim 1, characterized in that: When adjusting the position of the coating device (25) in step 1: by adjusting the extension length of the driving electric push rod (3), the lifting block (4) is driven to slide up and down in the support frame (2) to adjust the position of the coating device (25).

6. The method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate according to claim 1, characterized in that: When recycling is performed by the recycling mechanism in step 4: the second driving cylinder (23) is started, and the piston rod of the second driving cylinder (23) is retracted. At this time, the top block (18) loses its support and slides down from the chute (20) and falls into the mobile rack (16). At this time, the first driving cylinder (21) is started to drive the mobile rack (16) to slide in the mounting rack (15), and the collecting tube (19) is driven to move to the top of the top block (18). Then the second driving cylinder (23) is started, and the second driving cylinder (23) is raised to lift the collecting tube (19). The collecting tube (19) is raised into the chute (20). At this time, the solution in the coating device (25) is transported to the collecting tube (19).

7. The method for manufacturing a halogen-free high-TG high-frequency high-speed copper clad laminate according to claim 1, characterized in that: The collecting cylinder (19) has a built-in heating mechanism to prevent the solution from solidifying in the coating device (25) after shutdown. When coating is required, the top block (18) only needs to be moved to the chute (20) and raised to support the copper foil again.

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