CN111483189A - Manufacturing process of heat dissipation graphite copper foil - Google Patents
Manufacturing process of heat dissipation graphite copper foil Download PDFInfo
- Publication number
- CN111483189A CN111483189A CN202010313688.4A CN202010313688A CN111483189A CN 111483189 A CN111483189 A CN 111483189A CN 202010313688 A CN202010313688 A CN 202010313688A CN 111483189 A CN111483189 A CN 111483189A
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- China
- Prior art keywords
- glue
- coating
- graphite
- copper foil
- ultrathin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
- B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention provides a manufacturing process of a heat dissipation graphite copper foil, which comprises an ultrathin matte black film, graphite and metal foils (including copper foils, aluminum foils and other heat conduction metal foils) which are sequentially attached, wherein glue-free composite technology is adopted among the ultrathin matte black film, the graphite and the metal foils, and the manufacturing process is simple, suitable for mass production and remarkably improved in production yield. The ultra-thin matte black film (low cost) is compounded with the graphite bare material only through the solvent-free glue and then compounded with the copper foil glue belt through the glue-free compounding technology, so that a large amount of raw materials can be saved. The production cost of manpower and time can greatly reduce the product price at that time. Unnecessary consumable sections energy and environmental protection may also be eliminated. By the glue-free compounding technology, the graphite and the copper foil have no previous barrier (PET adhesive tape). The heat conduction and heat dissipation performance of the product can be maximized, the light and thin of the product can be better controlled, and the development prospect is good.
Description
Technical Field
The invention relates to the field of heat dissipation of electronic products, in particular to a manufacturing process of a heat dissipation graphite copper foil.
Background
With the development of the times and the application of microelectronic technology, electronic products have been closely related to the life of people, the electronic products gradually develop towards multifunction, high performance and small volume, but with the improvement of product performance and the reduction of volume, the problem of heat generation caused by pursuing product performance becomes a big problem for various manufacturers at present, graphite becomes the current mainstream direction due to the high thermal conductivity coefficient of graphite, and most of the electronic products are provided with corresponding graphite copper foils for heat dissipation of the products.
The traditional technology is a raw material multi-level laminating technology, and the material composition of the traditional technology comprises the steps of an ultrathin double-layer PET black single-sided adhesive tape, a graphite bare material and PET double-sided adhesive tape, a copper foil (aluminum box) adhesive tape, the graphite bare material is wrapped by the double-layer PET black single-sided adhesive tape to prevent the graphite bare material from falling off, the wrapped graphite bare material is adhered to the copper foil adhesive tape by the PET double-sided adhesive tape, wherein, the two sides of the PET double-sided tape are coated with release films, and the coated release films need to be removed when in use, so that the product needs to be repeatedly attached in the production process, the production speed of the product is greatly slowed down, the mass production is not facilitated, and the graphite and the copper foil (aluminum box) in the raw materials have ultrathin and fragile physical properties, the repeated lamination can easily cause the damage of the raw material, the product yield is influenced, the production cost is increased, and the thickness and the heat conduction efficiency of the product can also be influenced by the use of the PET double-sided adhesive tape.
Disclosure of Invention
The invention aims to solve the problems that repeated lamination is needed in the production process of the original heat dissipation graphite copper foil, the production speed of a product is greatly slowed down, and the thickness and the heat conduction efficiency of the product are influenced by the use of a PET double-sided adhesive tape.
In order to achieve the purpose, the invention provides the following technical scheme:
a manufacturing process of a heat dissipation graphite copper foil comprises an ultrathin matte black film, graphite and metal foils (including copper foils, aluminum foils and other heat conduction metal foils) which are sequentially attached through a glue-free composite technology.
As a further scheme of the invention: the ultrathin matte black film is a PET film with the thickness of 0.01-0.012 mm.
As a further scheme of the invention: the metal foil is a copper foil or an aluminum foil, and one surface of the metal foil is coated with a glue layer.
As a further scheme of the invention: the ultrathin matte black film is compounded with graphite, graphite and metal foil through coating machine heat-sealing solvent-free glue.
As a further scheme of the invention: the method comprises the following steps:
And 3, mounting the single-side coated coil obtained in the step 2 on a discharging wheel again, mounting the metal foil coil to another discharging wheel, and adjusting the temperature of the coating wheel to 45 ℃.
And 4, coating the surface of the glue-free side of the metal foil with solvent-free glue through a coating head, compounding the metal foil with the single-sided coating coiled material obtained after the step 2 through a coating wheel, wherein the coating speed is 8-10m/min, the thickness of the glue layer is 0.1-1.0mm, and accelerating curing through UV lamp irradiation after compounding, wherein the energy intensity of the UV lamp is 300-350mj/cm 2.
And 5, rewinding the coiled material obtained after the step 4 is implemented, wherein the rewinding speed is 15-20m/min, and the stress of the coiled material is eliminated.
And 6, cutting the required product size specification.
Advantageous effects
1. The invention has simple production process and is suitable for mass production, and the production yield is obviously improved.
2. The invention only needs to compound the ultrathin matte black film (with low cost) with the graphite bare material through the solvent-free glue and then compound with the copper foil glue, thereby saving a large amount of raw materials. The production cost of manpower and time can greatly reduce the product price at that time. Unnecessary consumable material saving energy source and environmental protection can be saved
3. The invention adopts the solvent-free compounding technology, and the graphite and the copper foil have no barrier (PET adhesive tape) before. The heat conduction and radiation performance of the product can be maximized, and the light and thin of the product can be better controlled.
Drawings
Fig. 1 is a schematic view of the structure of the graphite copper foil of the present invention.
Fig. 2 is a schematic view of the structure of the original graphite copper foil.
Fig. 3 is a schematic view of the coating of the ultra-thin matte black film of the present invention.
FIG. 4 is a schematic view of the copper foil tape coating of the present invention.
In FIGS. 1-4: 1-graphite, 2-ultrathin matte black film, 3-metal foil, 4-glue layer, 5-PET black single-sided tape, 6-PET double-sided tape, 7-discharging wheel, 8-coating head, 9-coating wheel and 10-winding wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, in an embodiment of the present invention, a manufacturing process of a heat dissipation graphite copper foil includes an ultra-thin matte black film 2, graphite 1, and a metal foil 3 sequentially bonded by a non-adhesive composite technique.
Wherein: the ultrathin matte black film 2 is a PET film with the thickness of 0.01-0.012 mm.
Wherein: the metal foil 3 is a copper foil or an aluminum foil, and one surface of the metal foil is coated with a glue layer 4.
Wherein: the ultrathin matte black film 2 is compounded with graphite 1, the graphite 1 and the metal foil 3 through coating machine heat-sealing solvent-free glue.
Wherein: the method comprises the following steps:
And 3, mounting the single-side coated coil obtained in the step 2 on the discharging wheel 7 again, mounting the metal foil 3 coil to the other discharging wheel 7, and adjusting the temperature of the coating wheel 9 to 45 ℃.
And 5, rewinding the coiled material obtained after the step 4 is implemented, wherein the rewinding speed is 15-20m/min, and the stress of the coiled material is eliminated.
And 6, cutting the required product size specification.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (5)
1. A manufacturing process of a heat dissipation graphite copper foil is characterized by comprising an ultrathin matte black film (2), graphite (1) and a metal foil (3) which are sequentially attached through a glue-free composite technology.
2. The manufacturing process of the heat dissipation graphite copper foil according to claim 1, characterized in that: the ultrathin matte black film (2) is a PET film with the thickness of 0.01-0.012 mm.
3. The manufacturing process of the heat dissipation graphite copper foil according to claim 1, characterized in that: the metal foil (3) is a copper foil or an aluminum foil, and one surface of the metal foil is coated with a glue layer (4).
4. The manufacturing process of the heat dissipation graphite copper foil according to claim 1, characterized in that: the ultrathin matte black film (2) is compounded with graphite (1) and the metal foil (3) through coating machine heat-sealing solvent-free glue.
5. The manufacturing process of the heat dissipation graphite copper foil according to claim 1, characterized in that: the method comprises the following steps:
step 1, controlling the environmental temperature at 23-26 ℃ and the humidity at 55-60, adding the prepared and mixed solvent-free glue into a glue barrel of a coating machine, preheating the glue barrel to 30 ℃, and introducing hot water into a coating wheel (9) to preheat to 40 ℃.
Step 2, installing the graphite (1) and the ultrathin matte black film (2) coiled material on a discharging wheel (7), starting a coating machine, coating solvent-free glue on the surface of the ultrathin matte black film (2) through a coating head (8), compounding the ultrathin matte black film and the graphite (1) through a coating wheel (9), wherein the coating speed is 10-12m/min, the thickness of the glue layer is 0.1-1.0mm, irradiating and accelerating curing through a UV lamp after compounding, and the energy intensity of the UV lamp is 300-350mj/cm2。
And 3, mounting the single-side coated coil obtained in the step 2 on a discharging wheel (7) again, mounting the metal foil (3) coil to another discharging wheel (7), and adjusting the temperature of a coating wheel (9) to 45 ℃.
Step 4, coating the surface of the glue-free side of the metal foil (3) with solvent-free glue through a coating head (8), and passing through a coating wheel (9) and the implementation stepCompounding the single-sided coating coiled material obtained after the step 2, wherein the coating speed is 8-10m/min, the thickness of the adhesive layer is 0.1-1.0mm, and after compounding, the single-sided coating coiled material is irradiated by a UV lamp to accelerate curing, and the energy intensity of the UV lamp is 300-350mj/cm2。
And 5, rewinding the coiled material obtained after the step 4 is implemented, wherein the rewinding speed is 15-20m/min, and the stress of the coiled material is eliminated.
And 6, cutting the required product size specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010313688.4A CN111483189A (en) | 2020-04-20 | 2020-04-20 | Manufacturing process of heat dissipation graphite copper foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010313688.4A CN111483189A (en) | 2020-04-20 | 2020-04-20 | Manufacturing process of heat dissipation graphite copper foil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111483189A true CN111483189A (en) | 2020-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010313688.4A Pending CN111483189A (en) | 2020-04-20 | 2020-04-20 | Manufacturing process of heat dissipation graphite copper foil |
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| Country | Link |
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| CN (1) | CN111483189A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115284711A (en) * | 2022-08-05 | 2022-11-04 | 安徽碳华新材料科技有限公司 | Ultra-wide AFG material with high heat dissipation capacity |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103781329A (en) * | 2012-10-26 | 2014-05-07 | 史广洲 | Graphite aluminum foil heat-conducting material |
| CN104589677A (en) * | 2015-02-10 | 2015-05-06 | 厦门威亮光学涂层技术有限公司 | Online double-sided roller coating process and device for producing high-brightness panels by using solvent-free UV coating |
-
2020
- 2020-04-20 CN CN202010313688.4A patent/CN111483189A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103781329A (en) * | 2012-10-26 | 2014-05-07 | 史广洲 | Graphite aluminum foil heat-conducting material |
| CN104589677A (en) * | 2015-02-10 | 2015-05-06 | 厦门威亮光学涂层技术有限公司 | Online double-sided roller coating process and device for producing high-brightness panels by using solvent-free UV coating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115284711A (en) * | 2022-08-05 | 2022-11-04 | 安徽碳华新材料科技有限公司 | Ultra-wide AFG material with high heat dissipation capacity |
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Application publication date: 20200804 |