CN111251369B - Method for improving layering of graphite film die-cut finished product - Google Patents
Method for improving layering of graphite film die-cut finished product Download PDFInfo
- Publication number
- CN111251369B CN111251369B CN202010055053.9A CN202010055053A CN111251369B CN 111251369 B CN111251369 B CN 111251369B CN 202010055053 A CN202010055053 A CN 202010055053A CN 111251369 B CN111251369 B CN 111251369B
- Authority
- CN
- China
- Prior art keywords
- graphite film
- die
- cut
- finished product
- product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 134
- 239000010439 graphite Substances 0.000 title claims abstract description 134
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 33
- 230000032798 delamination Effects 0.000 claims abstract description 15
- 238000010428 oil painting Methods 0.000 claims description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 43
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 5
- 238000005411 Van der Waals force Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002085 persistent effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
Abstract
The invention relates to the field of graphite film die cutting, in particular to a method for improving layering of a graphite film die cutting finished product, which greatly improves layering of the graphite film die cutting finished product, thereby improving the product yield. The improved product can be applied to 3C products, and the requirement of rapid heat dissipation of electronic products is met. The improvement method mainly comprises the following steps: and pressing the edge of the finished product of the graphite film die cutting, and testing the processed product, wherein the finished product of the graphite film die cutting is not layered. Delamination of the die-cut finished product of the die-cut graphite film is always a common problem in the die-cut field, delamination problem frequently occurs, and the invention provides a quick solution to the problem. The invention has simple process, low production cost and energy consumption, and solves the problem of low yield caused by layering of the original graphite film die-cut finished product.
Description
Technical Field
The invention relates to the technical field of graphite film die cutting, in particular to a method for improving layering of a graphite film die cutting finished product.
Background
The high heat conduction graphite heat dissipation film has become an indispensable component of intelligent electronic equipment, such as smart phones, portable notebook computers, intelligent sound boxes, intelligent VR wearable equipment and the like. With the advent of the 5G age, the chip integration level of electronic devices is increasing to meet the realization of multifunctionality, so that the demands for heat dissipation will be higher and denser. The graphite film is of a layered two-dimensional material structure, is formed by stacking Van der Waals forces between layers, and the Van der Waals forces between the layers are far smaller than those in the graphite plane from sp 2 The covalent bond force of the composition makes the graphite film easily delaminate, but can bear large stress in the in-plane direction. In the field of graphite die cutting, graphite delamination is a persistent and persistent problem throughout the industry. At the same time, the layered structure of the graphite determines the characteristic of easy delamination.
Therefore, developing a method for improving layering of a die-cut finished product of a graphite film can directly improve the yield of the graphite film in die cutting, so as to meet the requirement of electronic equipment on rapid heat dissipation and promote the development of intelligent industry; meanwhile, the method has great scientific and economic significance for promoting the high-speed development of the precise processing and rapid heat dissipation technology of electronic materials in China.
Disclosure of Invention
The invention aims to provide a method for improving layering of a die-cut finished product of a graphite film, which has the advantages of simple process, high efficiency, easiness in operation and low energy consumption, and solves the layering problem caused by die cutting of the graphite film.
The technical scheme of the invention is as follows:
a method of improving delamination of a die cut finished product of graphite film comprising: and after the graphite film is die-cut, discharging redundant air at the edge wrapping part of the finished product of the die-cut graphite film, so that the upper and lower edges of the graphite film are tightly attached to each other.
Further, the method comprises the following steps:
(1) Pressing the edge of the graphite film die-cut finished product for a plurality of times by utilizing the sharp end or the sharp edge of the pressing object;
(2) And sticking the pressed graphite film die-cut finished product on a flat plate, and pressing the whole finished product to ensure complete lamination.
Further, the graphite film adopted by the graphite film die-cut finished product is a double-layer graphite film, and each layer is 32 mu m thick.
Further, the pencil or bamboo or wood products similar to the pencil are used as pressing objects to press the wrapping edges of the die-cut graphite film finished product.
Further, in the step (1), the number of times of edge covering pressing is 1 to 3, and the pressing strength is 0.6 to 1.5MPa.
Further, in the step (2), 2Kg of oil painting roller is used for carrying out die cutting on the graphite film to obtain a finished product, and the finished product is subjected to double rolling for 3 times.
In the step (1), a cutting die with the same shape as the wrapping edge of the finished graphite film die-cut product is used as a pressing object to press the wrapping edge of the finished graphite film die-cut product in a sleeved mode.
Further, the shape of the cutting die is amplified by 100.1-102% according to the shape of the wrapping edge of the graphite film die-cut finished product.
Further, the distance between the knife edge of the knife die and the backing film is set to be 50% -80% of the thickness of the graphite film part on the graphite film die-cut finished product.
The design idea of the invention is as follows:
the invention provides a method for improving layering of a finished product of graphite film die cutting, after the graphite film is die-cut, an object with a sharp end such as a pencil with a tip and a shape similar to a pencil is used, or a cutting die (a knife edge on the cutting die is a sharp edge) is directly used for pressing the edge of the finished product of the graphite film die cutting, redundant air at the edge of the finished product of the graphite film die cutting is discharged, and the upper edge and the lower edge of the graphite film are tightly attached to each other, so that the layering problem of the finished product of the graphite film die cutting after die cutting is improved, the yield of the graphite film die cutting is greatly improved, and the method solves the universality problem that the prior graphite film is easy to layer and always puzzles about die cutting when die cutting.
The invention has the advantages and beneficial effects that:
1. according to the invention, the product edge covering is directly pressed, so that the problem of layering of a graphite film die-cut finished product can be solved, and the yield is improved to 85-100%.
2. The invention can directly add a binding sleeve position pressing station on the die cutting line, thereby realizing continuous production.
Detailed Description
The present invention will be described in further detail by examples, in which the die-cut double-layered graphite film was subjected to delamination improvement, and the thickness of each of the double-layered graphite films was 32 μm.
Example 1
The layering method for improving the die-cut finished product of the graphite film in the embodiment comprises the following steps:
selecting the graphite film die-cut finished product judged to be layered, and fixing the graphite film die-cut finished product on a flat operation table; pressing the 2B pencil with the tip for 2 times along the edge of the die-cut finished product of the graphite film, wherein the pressing strength is 0.8MPa; and sticking the improved graphite film die-cut finished product and the non-improved graphite film die-cut finished product on a flat steel plate, and rolling the flat steel plate back and forth for 3 times by using a 2Kg oil painting roller to ensure the complete lamination of the whole graphite film die-cut finished product.
Tearing the graphite film die-cut finished product protective film, and preventing the graphite film with the pressed edge from being severely layered, wherein the graphite film after the pressed edge is pressed and processed is not layered; the delamination improvement rate of the graphite film is 100 percent.
Example 2
The method for improving layering of the graphite film die-cut finished product in the embodiment comprises the following steps:
selecting a graphite film die-cut finished product judged to be layered, placing the graphite film die-cut finished product at the front of a sleeve position pressing station at the last of die cutting lines, and performing sleeve position pressing on the covered edge of the finished product by adopting a cutting die consistent with the covered edge of the finished product, wherein the shape of the cutting die is only enlarged to 102% in size compared with the shape of the covered edge of the finished product, and the distance between the edge of the cutting die and the backing film is set to be 50% of the total thickness of the graphite film, namely 32 mu m; starting a die cutting production line, and enabling the layered graphite film die cutting finished product to perform a primary sleeve position pressing procedure, wherein the pressure intensity of the sleeve position pressing station is 1.5MPa; and sticking the improved graphite film die-cut finished product and the non-improved graphite film die-cut finished product on a flat steel plate, and rolling the flat steel plate back and forth for 1 time by using a 2Kg oil painting roller to ensure that the whole graphite film die-cut finished product is completely attached.
Tearing the graphite film die-cut finished product protective film, wherein the graphite film without pressing the edge is severely layered, and the graphite film after the pressing edge is almost not layered; the layering improvement rate of the graphite film is 95 percent
Example 3
The method for improving layering of the graphite film die-cut finished product in the embodiment comprises the following steps:
selecting the graphite film die-cut finished product judged to be layered, and placing the graphite film die-cut finished product in front of a sleeve position pressing station at the last die cutting line; starting a die cutting production line, and carrying out a sleeve position pressing procedure as described in the embodiment 2 on a layered graphite film die cutting finished product once, wherein the sleeve position pressing pressure is 0.6MPa, and the adopted shape of a cutting die is only enlarged to 100.1% in size compared with the shape of a finished product edge, and the distance between a cutting edge of the cutting die and a backing film is set to 80% of the total thickness of the graphite film, namely 51.2 mu m; and (3) attaching the improved graphite film die-cut finished product and the non-improved graphite film die-cut finished product to a flat steel plate, and rolling the flat steel plate back and forth for 2 times by using a 2Kg oil painting roller to ensure that the whole graphite film die-cut finished product is completely attached.
Tearing the graphite film die-cut finished product protective film, and preventing the graphite film with the pressed edge from being severely layered, wherein the graphite film subjected to the pressed edge-covering treatment is partially layered; the delamination improvement rate of the graphite film is 85 percent
Example 4
The method for improving layering of the graphite film die-cut finished product in the embodiment comprises the following steps:
selecting the graphite film die-cut finished product judged to be layered, and fixing the graphite film die-cut finished product on a flat operation table; pressing the bamboo product rod-shaped object with the tip for 3 times along the edge of the finished product die-cut by the graphite film, wherein the pressing strength is 0.9MPa; and (3) sticking the improved graphite film die-cut finished product and the non-improved graphite film die-cut finished product on a flat steel plate, and rolling the flat steel plate back and forth for 3 times by using a 2Kg oil painting roller to ensure that the whole graphite film die-cut finished product is completely attached.
Tearing the graphite film die-cut finished product protective film, and preventing the graphite film with the pressed edge from being severely layered, wherein the graphite film after the pressed edge is pressed and processed is not layered; the delamination improvement rate of the graphite film is 100 percent.
Example 5
The method for improving layering of the graphite film die-cut finished product in the embodiment comprises the following steps:
selecting the graphite film die-cut finished product judged to be layered, and fixing the graphite film die-cut finished product on a flat operation table; pressing the wooden product rod-shaped object with the tip for 3 times along the edge of the die-cut finished product of the graphite film, wherein the pressing strength is 1.2MPa; and (3) sticking the improved graphite film die-cut finished product and the non-improved graphite film die-cut finished product on a flat steel plate, and rolling the flat steel plate back and forth for 3 times by using a 2Kg oil painting roller to ensure that the whole graphite film die-cut finished product is completely attached.
Tearing the graphite film die-cut finished product protective film, and preventing the graphite film with the pressed edge from being severely layered, wherein the graphite film after the pressed edge is pressed and processed is not layered; the delamination improvement rate of the graphite film is 100 percent.
According to the method for improving layering of the graphite film die-cut finished product, after the graphite film is die-cut, the edge wrapping part of the graphite film die-cut finished product is pressed by using a pencil with a tip, a pencil-like object with a sharp end or directly using a cutting die, so that redundant air at the edge wrapping part of the graphite film die-cut finished product is discharged, and then the graphite film die-cut finished product is pressed, so that layering after the graphite film die-cutting is greatly improved, the yield of the graphite film die-cutting is improved, and the yield is improved to 85-100%.
The invention solves the problem of easy layering caused by die cutting of the original graphite film, and can directly add an edge-wrapping sleeve pressing station on the die cutting line, thereby realizing continuous production; the process is simple, the efficiency is high, the operation is easy, the energy consumption is low, the die cutting process can be widely applied to die cutting processes of different materials, the yield is improved, and the cost is reduced.
Claims (7)
1. A method for improving delamination of a die cut finished product of a graphite film, comprising: after the graphite film is die-cut, discharging redundant air at the edge wrapping part of a finished product of the graphite film die-cut, so that the upper and lower edges of the graphite film are closely attached, wherein the graphite film adopted by the finished product of the graphite film die-cut is a double-layer graphite film, and each layer of the graphite film is 32 mu m thick;
the method specifically comprises the following steps:
(1) Pressing the edge of the graphite film die-cut finished product for a plurality of times by utilizing the sharp end or the sharp edge of the pressing object;
(2) And sticking the pressed graphite film die-cut finished product on a flat plate, and pressing the whole finished product to ensure complete lamination.
2. The method for improving delamination of a finished die-cut graphite film product according to claim 1, wherein the wrapping of the finished die-cut graphite film product is pressed using a pencil or a pencil-like bamboo or wood product as a pressing object.
3. The method for improving layering of a finished die-cut graphite film product according to claim 1, wherein in the step (1), the number of binding pressing is 1-3, and the pressing strength is 0.6-1.5 MPa.
4. The method for improving delamination of a finished die cut graphite film product of claim 1, wherein in step (2), 2Kg of oil painting rollers are used to back-roll the finished product 3 times.
5. The method for improving delamination of a finished die-cut graphite film product of claim 1, wherein in step (1), a die having a shape corresponding to the shape of the edge of the finished die-cut graphite film product is used as a pressing object to press the edge of the finished die-cut graphite film product in place.
6. The method of improving delamination of a finished die cut graphite film product of claim 5 wherein the shape of the knife die is scaled up by 100.1-102% in equal proportion to the shape of the wrapped edge of the finished die cut graphite film product.
7. The method of claim 5, wherein the distance between the edge of the knife die and the backing film is set to 50% -80% of the thickness of the portion of the graphite film on the finished die cut product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010055053.9A CN111251369B (en) | 2020-01-17 | 2020-01-17 | Method for improving layering of graphite film die-cut finished product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010055053.9A CN111251369B (en) | 2020-01-17 | 2020-01-17 | Method for improving layering of graphite film die-cut finished product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111251369A CN111251369A (en) | 2020-06-09 |
| CN111251369B true CN111251369B (en) | 2023-11-24 |
Family
ID=70944137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010055053.9A Active CN111251369B (en) | 2020-01-17 | 2020-01-17 | Method for improving layering of graphite film die-cut finished product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111251369B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941533B (en) * | 2020-08-24 | 2022-06-07 | 苏州安洁科技股份有限公司 | Process for solving layering problem during graphene processing |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102811947A (en) * | 2010-02-22 | 2012-12-05 | 株式会社钟化 | Method for producing graphite film, method for rewinding same, and method for producing graphite composite film and graphite die-cutting product |
| JP2013224258A (en) * | 2013-06-07 | 2013-10-31 | Kaneka Corp | Method for producing graphite composite film |
| CN204749457U (en) * | 2015-05-29 | 2015-11-11 | 深圳垒石热管理技术有限公司 | Graphite thermal film cross cutting processing system of borduring |
| CN204869978U (en) * | 2015-07-10 | 2015-12-16 | 江苏灰山石科技股份有限公司 | Graphite flake double -contracting limit production line of drawing a design |
| CN206411384U (en) * | 2017-02-07 | 2017-08-15 | 信利半导体有限公司 | A kind of graphite flake, backlight and liquid crystal module |
| CN107984838A (en) * | 2017-11-27 | 2018-05-04 | 南京航空航天大学 | A kind of preparation method of impact resistance heat conduction aluminium alloy-carbon fiber-graphene layer plywood |
| CN107984632A (en) * | 2016-10-26 | 2018-05-04 | 南卜电子科技（上海）有限公司 | A kind of die-cutting apparatus for mobile phone heat dissipation graphite flake |
| CN108515707A (en) * | 2018-04-28 | 2018-09-11 | 康得复合材料有限责任公司 | Prepare the equipment and preparation method of graphene paper glued membrane |
| CN208164327U (en) * | 2018-04-28 | 2018-11-30 | 康得复合材料有限责任公司 | The equipment for preparing graphene paper glue film |
| CN110077048A (en) * | 2019-05-16 | 2019-08-02 | 重庆云天化瀚恩新材料开发有限公司 | A kind of graphene heat-conducting piece and preparation method thereof |
-
2020
- 2020-01-17 CN CN202010055053.9A patent/CN111251369B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102811947A (en) * | 2010-02-22 | 2012-12-05 | 株式会社钟化 | Method for producing graphite film, method for rewinding same, and method for producing graphite composite film and graphite die-cutting product |
| JP2013224258A (en) * | 2013-06-07 | 2013-10-31 | Kaneka Corp | Method for producing graphite composite film |
| CN204749457U (en) * | 2015-05-29 | 2015-11-11 | 深圳垒石热管理技术有限公司 | Graphite thermal film cross cutting processing system of borduring |
| CN204869978U (en) * | 2015-07-10 | 2015-12-16 | 江苏灰山石科技股份有限公司 | Graphite flake double -contracting limit production line of drawing a design |
| CN107984632A (en) * | 2016-10-26 | 2018-05-04 | 南卜电子科技（上海）有限公司 | A kind of die-cutting apparatus for mobile phone heat dissipation graphite flake |
| CN206411384U (en) * | 2017-02-07 | 2017-08-15 | 信利半导体有限公司 | A kind of graphite flake, backlight and liquid crystal module |
| CN107984838A (en) * | 2017-11-27 | 2018-05-04 | 南京航空航天大学 | A kind of preparation method of impact resistance heat conduction aluminium alloy-carbon fiber-graphene layer plywood |
| CN108515707A (en) * | 2018-04-28 | 2018-09-11 | 康得复合材料有限责任公司 | Prepare the equipment and preparation method of graphene paper glued membrane |
| CN208164327U (en) * | 2018-04-28 | 2018-11-30 | 康得复合材料有限责任公司 | The equipment for preparing graphene paper glue film |
| CN110077048A (en) * | 2019-05-16 | 2019-08-02 | 重庆云天化瀚恩新材料开发有限公司 | A kind of graphene heat-conducting piece and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111251369A (en) | 2020-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111251369B (en) | Method for improving layering of graphite film die-cut finished product | |
| JP5995634B2 (en) | Pattern adhesive body and method for producing the same | |
| CN106079693B (en) | A kind of graphene metal composite sheet material and preparation method thereof | |
| CN101772271A (en) | Method for single-sided lamination reinforcement of flexible printed circuit board | |
| WO2016127726A1 (en) | Pre-processing structure, manufacturing method and pre-processing method for flexible circuit board covering film | |
| CN103862517A (en) | Double-faced adhesive film product die-cutting hole waste discharge process | |
| CN102009426A (en) | One-step hot-press forming process for multilayer composite floor board | |
| CN207277099U (en) | A kind of two-sided release liners of grid line | |
| CN204322188U (en) | A kind of bond paper facing cutting knife modular structure | |
| CN107263956B (en) | Electromagnetic interference EMI composite material and preparation method thereof | |
| CN217127322U (en) | Cotton structure of pasting that changes of thin narrow type electrically conductive bubble | |
| CN102825644A (en) | Plate manufacturing process | |
| CN202705294U (en) | Pressure-sensitive double sided tape | |
| CN114801238A (en) | Processing technology of adhesive product and adhesive product | |
| CN102260760A (en) | Nickel pattern plate manufacturing process | |
| CN102958277B (en) | The compression method of a kind of metal base circuit board | |
| CN209832844U (en) | Single-side wire-pressing PCM composite board | |
| CN209756337U (en) | bending-resistant flexible hollow composite board | |
| CN105517360B (en) | A method of improving copper-based copper-clad laminate and drills copper-based bottom peak | |
| CN206544362U (en) | Composite structure | |
| CN203185738U (en) | Environmentally friendly square composite panel | |
| CN104124471A (en) | Interlaminar stripping force method of plastic-aluminum membrane rubbing preparation method | |
| CN205028821U (en) | Metallic film presses keytape bump full position laminating structure | |
| CN205266012U (en) | Copper base copper clad laminate drilling copper basilar part drapes over one's shoulders lamination at peak structure is improved | |
| CN2920595Y (en) | Laminated bamboo wood integrated material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |