CN109551247B - Copper-based resin prepreg production equipment for mobile communication circuit board - Google Patents
Copper-based resin prepreg production equipment for mobile communication circuit board Download PDFInfo
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- CN109551247B CN109551247B CN201811490323.8A CN201811490323A CN109551247B CN 109551247 B CN109551247 B CN 109551247B CN 201811490323 A CN201811490323 A CN 201811490323A CN 109551247 B CN109551247 B CN 109551247B
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- copper
- sealing
- copper foil
- barrel
- pump
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000011347 resin Substances 0.000 title claims abstract description 40
- 229920005989 resin Polymers 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 14
- 239000010949 copper Substances 0.000 title claims abstract description 14
- 238000010295 mobile communication Methods 0.000 title claims abstract description 11
- 239000011889 copper foil Substances 0.000 claims abstract description 42
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 239000003292 glue Substances 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000005498 polishing Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 43
- 238000003756 stirring Methods 0.000 claims description 25
- 238000001125 extrusion Methods 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 16
- 241001282160 Percopsis transmontana Species 0.000 claims description 13
- 239000011521 glass Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000012752 auxiliary agent Substances 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims 3
- -1 heating wires (52) Substances 0.000 claims 1
- 239000012779 reinforcing material Substances 0.000 abstract description 8
- 238000007598 dipping method Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 description 12
- 230000001070 adhesive effect Effects 0.000 description 12
- 239000007788 liquid Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of production of copper-clad plates of mobile communication circuit boards, in particular to copper-based resin prepreg production equipment for a mobile communication circuit board. The equipment comprises a copper foil winding drum, a polishing device, a coating device and a cutting device which are sequentially arranged from front to back, a drying device arranged below the coating device and the cutting device, and a glue supply device connected with the coating device through a conveying pipe. The copper-based resin prepreg and the reinforcing material produced by the equipment are subjected to high Wen Die pressure to manufacture the copper-clad plate, so that the problems that in the prior art, in the processes of dipping the reinforcing material and solidifying the glue solution, bubbles are mixed easily, the prepreg components are uneven and the like are easy to occur, and the yield of the copper-clad plate is reduced are solved.
Description
Technical Field
The invention relates to the technical field of production of copper-clad plates of mobile communication circuit boards, in particular to copper-based resin prepreg production equipment for a mobile communication circuit board.
Background
The copper-clad plate, which is a fully-called copper-clad laminate, is a basic material of the electronic industry, is mainly used for manufacturing printed circuit boards, and is widely used in the field of mobile communication.
The traditional copper-clad plate is a plate-shaped material prepared by dipping electronic glass fiber cloth or other reinforcing materials with resin, coating copper foil on one or both sides, and hot-pressing. With the development of copper-clad plate materials, more auxiliary materials are added in the glue solution, and defects such as bubble inclusion, uneven prepreg components and the like are easy to occur in the processes of glue dipping of the reinforcing materials and solidification of the glue solution, so that the production yield of the copper-clad plate is reduced.
Disclosure of Invention
The invention aims to provide copper-based resin prepreg production equipment for a mobile communication circuit board, which is used for producing a copper-clad plate by high Wen Die-degree pressure of a produced copper-based resin prepreg and a reinforcing material, and solves the problems that in the prior art, defects such as air inclusion, uneven prepreg components and the like are easy to occur in the processes of dipping and solidifying glue solution of the reinforcing material, so that the production yield of the copper-clad plate is reduced and the like.
In order to achieve the above purpose, the present invention is implemented by adopting the following technical scheme: the utility model provides a copper-based resin prepreg production facility for mobile communication circuit board, includes copper foil reel, grinding device, coating device and the cutting device that from front to back set gradually, installs the drying device in the below between coating device and the cutting device to and the glue supply device that is connected with coating device through the conveyer pipe.
The coating device comprises a portal frame, a single screw pump, an extrusion part and a sealing device; the portal frame comprises a left upright post, a right upright post, screw motors, nuts and a pump bracket, wherein the screw motors are respectively arranged on the upright posts on the left side and the right side; the single-screw pump is arranged on the pump bracket and is provided with a pump inlet at the upper side and a pump outlet at the lower end; the extrusion part is a hollow cavity body with a round upper part and a flat lower part, a plurality of flow dividing plates are arranged in the hollow cavity, an opening at the upper side of the extrusion part is connected with a pump outlet, and a sealing device is arranged at an opening at the lower end of the extrusion part; the sealing device comprises a support plate, a sealing motor, a gear and a rack, wherein the support plate is arranged at the opening at the lower end of the extrusion part, the sealing plate is arranged below the support plate in a sliding fit mode, the sealing motor is arranged at the left side and the right side of the support plate, the gear is arranged on a sealing motor shaft, and the rack meshed with the gear is arranged at the two sides of the sealing plate.
As a preferable technical scheme of the invention, the copper foil winding drum comprises a frame and an electric winding drum arranged on the frame, wherein the electric winding drum is provided with a copper foil roll to be unwound.
As a preferable technical scheme of the invention, the polishing device comprises a left side plate, a right side plate, guide rollers and electric sand rollers, wherein the side plates are arranged on the side surfaces of the left upright post and the right upright post; the copper foil coil on the electric winding drum is uncoiled to pass through the copper foil between the upper guide roller and the lower guide roller, the distance between the roller surfaces of the upper guide roller and the lower guide roller is slightly larger than the thickness of the copper foil, the roller surface below the electric sand roller is contacted with the upper surface of the copper foil, and the roller surface of the electric sand roller is provided with a layer of abrasive.
As a preferable technical scheme of the invention, the glue supply device comprises a vacuum barrel, a proportioning barrel, a condensing pipe, a sealing cover, a stirring motor and a stirring frame, wherein the proportioning barrel is arranged in the vacuum barrel, the condensing pipe is arranged in the proportioning barrel, and the sealing cover is arranged on the vacuum barrel; a stirring motor is arranged on the sealing cover, a stirring frame is arranged on the stirring motor shaft, and the stirring frame acts on the inside of the proportioning barrel; the bottom of the batching barrel is provided with an output port which is connected with the coating device through a conveying pipe; the sealing cover is provided with a feeding pipe and an exhaust pipe, the feeding pipes are used for injecting the existing resin, curing agent, auxiliary agent and the like into the batching barrel, and the exhaust pipe is connected with the existing vacuum pump.
As a preferable technical scheme of the invention, the drying device comprises an insulation box body, heating wires, glass plates and electric auxiliary feeding wheels, wherein the inner cavity of the insulation box body is provided with reflective metal foils, a plurality of heating wires are arranged in the insulation box body, the glass plates are arranged on the upper side of the insulation box body, and the electric auxiliary feeding wheels are arranged on the left side plate and the right side plate of the insulation box body through mounting seats.
As a preferable technical scheme of the invention, the cutting device comprises a bracket, air cylinders and a knife switch, wherein the bottom ends of a plurality of air cylinders are arranged above the bracket, and the knife switch is arranged at the top ends of the air cylinders.
When in operation, the existing vacuum pump is started, the low pressure state in the vacuum barrel is kept, the stirring motor is started, the condensing pipe is connected with the condensing agent, liquid resin, curing agent, auxiliary agent and the like are injected into the material barrel through the material inlet pipe on the sealing cover according to the required proportion, the stirring motor drives the stirring frame to rotate, the liquid resin, the curing agent, the auxiliary agent and the like in the material barrel are stirred into the required resin adhesive, the condensing pipe works to keep the resin adhesive at low temperature, the resin adhesive is prevented from being cured in advance, the copper foil on the copper foil winding drum is uncoiled, the copper foil passes through the two guide rollers until the copper foil passes between the glass plate and the electric auxiliary feeding wheel, the electric sand roller rotates, the surface roughness of the copper foil is increased by the abrasive on the surface of the copper foil, and the electric auxiliary feeding wheel rotates to drive the copper foil to move backwards on the glass plate, the heating wire in the drying device is connected with a power supply to generate heat and reflect heat radiation through the metal foil of the heat insulation box body, the heat radiation passes through the glass plate to enable the copper foil on the upper surface of the glass plate to be heated to about 230 ℃, the single screw pump is started, the low-temperature resin adhesive is pumped into the coating device through the conveying pipe, the resin adhesive uniformly extrudes a resin thin layer from the lower end of the extrusion part to the upper surface of the copper foil through the action of the dividing plate, the resin thin layer is heated to be in a semi-solidified state, the copper-based resin prepreg is preliminarily formed and conveyed backwards, when the copper-based resin prepreg exceeds the required length of the cutting device, the air cylinder stretches, the copper-based resin prepreg is cut off by a knife switch at the top end of the air cylinder, and when production is suspended, the sealing motor drives the gear to rotate, so that the sealing plate provided with the rack meshed with the gear is driven to move until the outlet at the lower end of the extrusion part is sealed.
The beneficial effects of the invention are as follows:
1. The copper-based resin prepreg and the reinforcing material produced by the method have high Wen Die pressure to manufacture the copper-clad plate, so that the problems of low production yield and the like of the copper-clad plate caused by the defects of bubble inclusion, uneven prepreg components and the like which are easy to occur in the processes of dipping the reinforcing material and solidifying the glue solution in the prior art can be solved;
2. The glue supply device designed by the invention adopts the condenser pipe to reduce the initial temperature of glue solution, so as to avoid the early solidification of the glue solution;
3. the glue supply device designed by the invention adopts a vacuum stirring and batching mode, so that the bubble content in glue solution is greatly reduced;
4. the single-screw pump designed by the invention is matched with the flat extrusion part, so that a flat resin glue layer can be uniformly output;
5. The polishing device designed by the invention can increase the surface roughness of the copper foil, so that the adhesion between the resin thin layer and the copper foil is firmer.
6. The sealing device designed by the invention can seal the extrusion part when production is suspended, and prevent excessive leakage of resin glue solution.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the coating apparatus of the present invention;
FIG. 3 is a schematic view of the construction of the polishing apparatus of the present invention;
FIG. 4 is a schematic structural view of the adhesive supplying device of the present invention;
fig. 5 is a schematic structural view of the drying apparatus of the present invention.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
As shown in fig. 1 to 5, a copper-based resin prepreg production apparatus for a mobile communication circuit board includes a copper foil reel 1, a polishing device 2, a coating device 3 and a cutting device 4, which are sequentially disposed from front to back, a drying device 5 installed between the coating device 3 and the cutting device 4 at a lower side, and a glue supply device 7 connected with the coating device 3 through a transfer pipe 6.
The coating device 3 comprises a portal frame 31, a single screw pump 32, an extrusion part 33 and a sealing device 34; the portal frame 31 comprises a column 311, screw motors 312, nuts 313 and a pump bracket 314 on the left side and the right side, wherein the column 311 on the left side and the right side is respectively provided with the screw motor 312, the through holes on the left side and the right side of the pump bracket 314 are respectively provided with the nut 313, and the two nuts 313 are meshed with screw shafts of the screw motors 312 on the same side; the single screw pump 32 is mounted on the pump mount 314, and the single screw pump 32 has an upper pump inlet 32a and a lower pump outlet 32b; the extruding part 33 is a hollow cavity with round upper part and flat lower part, a plurality of flow dividing plates 33a are arranged in the hollow cavity, an opening at the upper side of the extruding part 33 is connected with the pump outlet 32b, and a sealing device 34 is arranged at the opening at the lower end of the extruding part 33; the sealing device 34 comprises a support plate 341, a sealing plate 342, a sealing motor 343, a gear 344 and a rack 345, wherein the support plate 341 is arranged at the opening of the lower end of the extrusion part 33, the sealing plate 342 is arranged below the support plate 341 in a sliding fit manner, the sealing motor 343 is arranged on the left side and the right side of the support plate 341, the gear 344 is arranged on the shaft of the sealing motor 343, and the rack 345 meshed with the gear 344 is arranged on the two sides of the sealing plate 342.
The copper foil reel 1 comprises a frame 11 and an electric reel 12 arranged on the frame 11, wherein the electric reel 12 is provided with a copper foil coil to be uncoiled.
The polishing device 2 comprises a left side plate 21, a right side plate 21, guide rollers 22 and an electric sand roller 23, wherein the side plate 21 is arranged on the side surfaces of the left upright post 311 and the right upright post 311, the front side of the side plate 21 is provided with an upper guide roller 22 and a lower guide roller 22, and the electric sand roller 23 is arranged behind the guide rollers 22; the copper foil coil on the electric winding drum 12 is uncoiled to pass through the copper foil between the upper guide roller 22 and the lower guide roller 22, the distance between the roller surfaces of the upper guide roller 22 and the lower guide roller 22 is slightly larger than the thickness of the copper foil, the roller surface below the electric sand roller 23 is contacted with the upper surface of the copper foil, and the roller surface of the electric sand roller 23 is provided with a layer of abrasive.
The glue supply device 7 comprises a vacuum barrel 71, a batching barrel 72, a condensing pipe 73, a sealing cover 74, a stirring motor 75 and a stirring frame 76, wherein the batching barrel 72 is arranged in the vacuum barrel 71, the condensing pipe 73 is arranged in the batching barrel 72, and the sealing cover 74 is arranged on the vacuum barrel 71; a stirring motor 75 is arranged on the sealing cover 74, a stirring frame 76 is arranged on the shaft of the stirring motor 75, and the stirring frame 76 acts on the inside of the proportioning barrel 72; the bottom of the batching barrel 72 is provided with an output port 72a, and the output port 72a is connected with the coating device 3 through a conveying pipe 6; the cover 74 is provided with a feed pipe 74a and an exhaust pipe 74b, the feed pipes 74a are used for injecting the existing resin, curing agent, auxiliary agent and the like into the batching barrel 72, and the exhaust pipe 74b is connected with the existing vacuum pump.
The drying device 5 comprises an insulation box body 51, heating wires 52, glass plates 53 and electric auxiliary feeding wheels 54, wherein the inner cavity of the insulation box body 51 is provided with reflective metal foils, a plurality of heating wires 52 are arranged in the insulation box body 51, the glass plates 53 are arranged on the upper side of the insulation box body 51, and the electric auxiliary feeding wheels 54 are arranged on left and right side plates of the insulation box body 51 through mounting seats.
The cutting device 4 comprises a bracket 41, air cylinders 42 and a knife 43, wherein the bottom ends of the air cylinders 42 are arranged above the bracket 41, and the knife 43 is arranged at the top ends of the air cylinders 42.
When the device is operated, the existing vacuum pump is started, the low-pressure state in the vacuum barrel 71 is kept, the stirring motor 75 is started, the condensing tube 73 is connected with a condensing agent, liquid resin, a curing agent, an auxiliary agent and the like are injected into the proportioning barrel 72 according to the required proportion through the feed pipe 74a on the sealing cover 74, the stirring motor 75 drives the stirring frame 76 to rotate, the liquid resin, the curing agent, the auxiliary agent and the like in the proportioning barrel 72 are stirred into required resin adhesive, the condensing tube 73 works to keep the resin adhesive at a low temperature, the resin adhesive is prevented from being cured in advance, the copper foil on the copper foil winding drum 1 is uncoiled, the copper foil passes through the two guide rollers 22 until the position between the glass plate 53 and the electric auxiliary feed wheel 54, the electric sand roller 23 rotates, the surface abrasive on the copper foil increases in surface roughness, meanwhile, the electric auxiliary feed wheel 54 rotates to drive the copper foil to move backwards on the glass plate 53, the heating wire 52 in the drying device 5 generates heat through power supply, the heat and the metal foil of the heat insulation box 51 is radiated, the heat radiation is heated to about 230 ℃ through the copper foil on the upper surface of the glass plate 53, the single-screw pump 32 is started, the low-temperature resin adhesive is kept at a low temperature, the resin adhesive is prevented from being cured in advance, the resin adhesive is prevented from being extruded by the copper foil roll 33, the copper foil is continuously coated by the gear 33, the gear wheel 33 is stretched out of the surface of the copper foil is stretched until the copper foil is stretched to reach the required to reach the length of the sealing plate 33, and reaches the required state, when the surface is stretched, and finally, when the resin is stretched, the surface is stretched, and finally, the resin is stretched, and the film is stretched, and finally, and a film is stretched, and a film is coated.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, and that the foregoing embodiments and description are merely illustrative of the principles of this invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, and these changes and modifications fall within the scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. Copper-based resin prepreg production equipment for a mobile communication circuit board comprises a copper foil reel (1), a polishing device (2), a coating device (3) and a cutting device (4) which are sequentially arranged from front to back, a drying device (5) arranged below between the coating device (3) and the cutting device (4), and a glue supply device (7) connected with the coating device (3) through a conveying pipe (6), wherein the coating device (3) comprises a portal frame (31), a single screw pump (32), an extrusion part (33) and a sealing device (34);
The portal frame (31) comprises a column (311), screw motors (312), nuts (313) and a pump bracket (314) at the left side and the right side, wherein the column (311) at the left side and the right side is respectively provided with the screw motor (312), the through holes at the left side and the right side of the pump bracket (314) are respectively provided with the nut (313), and the two nuts (313) are meshed with screw shafts of the screw motors (312) at the same side;
The single-screw pump (32) is arranged on the pump bracket (314), and the single-screw pump (32) is provided with a pump inlet (32 a) at the upper side and a pump outlet (32 b) at the lower end;
The extrusion part (33) is a hollow cavity with a round upper part and a flat lower part, a plurality of flow dividing plates (33 a) are arranged in the hollow cavity, an opening at the upper side of the extrusion part (33) is connected with the pump outlet (32 b), and a sealing device (34) is arranged at an opening at the lower end of the extrusion part (33);
The sealing device (34) comprises a support plate (341), a sealing plate (342), a sealing motor (343), a gear (344) and racks (345), wherein the support plate (341) is arranged at the opening of the lower end of the extrusion part (33), the sealing plate (342) is arranged below the support plate (341) in a sliding fit mode, the sealing motor (343) is arranged on the left side and the right side of the support plate (341), the gears (344) are arranged on the shaft of the sealing motor (343), and the racks (345) meshed with the gears (344) are arranged on the two side edges of the sealing plate (342);
the copper foil winding drum (1) comprises a frame (11) and an electric winding drum (12) arranged on the frame (11), wherein the electric winding drum (12) is provided with a copper foil coil to be unwound;
The polishing device (2) comprises a left side plate (21), a right side plate (22) and an electric sand roller (23), wherein the side plate (21) is arranged on the side surfaces of the left upright post (311) and the right upright post (311), the front side of the side plate (21) is provided with an upper guide roller (22) and a lower guide roller (22), and the electric sand roller (23) is arranged behind the guide rollers (22);
The copper foil coil on the electric winding drum (12) is uncoiled to enable the copper foil to pass through the space between the upper guide roller (22) and the lower guide roller (22), the distance between the roller surfaces of the upper guide roller and the lower guide roller (22) is slightly larger than the thickness of the copper foil, the roller surface below the electric sand roller (23) is contacted with the upper surface of the copper foil, and the roller surface of the electric sand roller (23) is provided with a layer of abrasive;
The glue supply device (7) comprises a vacuum barrel (71), a material mixing barrel (72), a condensing pipe (73), a sealing cover (74), a stirring motor (75) and a stirring frame (76), wherein the material mixing barrel (72) is arranged in the vacuum barrel (71), the condensing pipe (73) is arranged in the material mixing barrel (72), and the sealing cover (74) is arranged on the vacuum barrel (71);
A stirring motor (75) is arranged on the sealing cover (74), a stirring frame (76) is arranged on the shaft of the stirring motor (75), and the stirring frame (76) acts on the inside of the proportioning barrel (72);
An output port (72 a) is arranged at the bottom of the batching barrel (72), and the output port (72 a) is connected with the coating device (3) through a conveying pipe (6);
A feed pipe (74 a) and an exhaust pipe (74 b) are arranged on the sealing cover (74), the feed pipes (74 a) are used for injecting the existing resin, curing agent and auxiliary agent into the batching barrel (72), and the exhaust pipe (74 b) is connected with the existing vacuum pump;
The drying device (5) comprises an insulation box body (51) with an inner cavity provided with reflective metal foil, heating wires (52), glass plates (53) and electric auxiliary feeding wheels (54), a plurality of heating wires (52) are arranged in the insulation box body (51), the glass plates (53) are arranged on the upper side of the insulation box body (51), and the electric auxiliary feeding wheels (54) are arranged on the left side plate and the right side plate of the insulation box body (51) through mounting seats;
The cutting device (4) comprises a support (41), air cylinders (42) and a knife switch (43), wherein the bottom ends of a plurality of air cylinders (42) are arranged above the support (41), and the knife switch (43) is arranged at the top ends of the air cylinders (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490323.8A CN109551247B (en) | 2018-12-06 | 2018-12-06 | Copper-based resin prepreg production equipment for mobile communication circuit board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490323.8A CN109551247B (en) | 2018-12-06 | 2018-12-06 | Copper-based resin prepreg production equipment for mobile communication circuit board |
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| Publication Number | Publication Date |
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| CN109551247A CN109551247A (en) | 2019-04-02 |
| CN109551247B true CN109551247B (en) | 2024-05-14 |
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| CN201811490323.8A Active CN109551247B (en) | 2018-12-06 | 2018-12-06 | Copper-based resin prepreg production equipment for mobile communication circuit board |
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| CN113578645A (en) * | 2021-07-22 | 2021-11-02 | 安徽鸿海新材料股份有限公司 | Preparation method of high-thermal-conductivity copper-clad plate |
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2018
- 2018-12-06 CN CN201811490323.8A patent/CN109551247B/en active Active
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| WO2002041675A1 (en) * | 2000-11-15 | 2002-05-23 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing circuit board |
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| CN109551247A (en) | 2019-04-02 |
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