CN212211788U - Graphite substrate composite heat dissipation film - Google Patents
Graphite substrate composite heat dissipation film Download PDFInfo
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- CN212211788U CN212211788U CN202021150063.2U CN202021150063U CN212211788U CN 212211788 U CN212211788 U CN 212211788U CN 202021150063 U CN202021150063 U CN 202021150063U CN 212211788 U CN212211788 U CN 212211788U
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Abstract
The utility model provides a compound heat dissipation membrane of graphite substrate, it includes: the release layer is compounded on one surface of the graphite substrate layer, and the protective layer is compounded on the other surface of the graphite substrate layer; the release layer comprises a release film, the release film is compounded on one surface of the graphite substrate layer through a first double faced adhesive, the surface of the release film facing the graphite substrate layer is provided with a grid structure, and the middle of the release film is cut off along the width direction; the graphite substrate layer is formed by laminating and compounding at least two layers of graphite unit films; the protective layer comprises a silica gel protective film which is compounded on the other side of the graphite substrate layer through second double-sided adhesive, and the middle of the silica gel protective film is cut off along the width direction. The utility model discloses a compound heat dissipation membrane of graphite substrate has realized peeling off from the centre through with parting layer and protective layer segmentation design, the problem of wrinkling when being favorable to avoiding peeling off. Meanwhile, the edge of the graphite substrate layer is protected by the edge covering design of the graphite substrate layer.
Description
Technical Field
The utility model relates to a heat dissipation membrane technical field especially relates to a compound heat dissipation membrane of graphite substrate.
Background
For electronic products, it is often necessary to arrange functional film products inside the products to achieve corresponding purposes, such as heat dissipation and light reflection. For a notebook, a film product capable of reflecting light, dissipating heat, shielding and the like needs to be arranged on a main board inside the notebook. However, when the release layer is peeled off, the conventional heat dissipation film is slowly torn off from one side of the release layer, so that the heat dissipation layer is easily wrinkled due to the interaction between the release layer and the heat dissipation layer, which is not favorable for peeling off the release layer. Meanwhile, the edge of the existing heat dissipation film is easy to damage. Therefore, it is necessary to provide a further solution to the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a graphite substrate composite heat dissipation membrane to overcome the not enough that exists among the prior art.
In order to solve the technical problem, the technical scheme of the utility model is that:
a graphite-based composite heat spreading film, comprising: the release layer is compounded on one surface of the graphite substrate layer, and the protective layer is compounded on the other surface of the graphite substrate layer;
the release layer comprises a release film, the release film is compounded on one surface of the graphite substrate layer through a first double faced adhesive, the surface, facing the graphite substrate layer, of the release film is provided with a grid structure, and the middle of the release film is cut off along the width direction;
the graphite substrate layer is formed by laminating and compounding at least two layers of graphite unit films;
the protective layer comprises a silica gel protective film which is compounded on the other side of the graphite substrate layer through second double-sided adhesive, and the middle of the silica gel protective film is cut off along the width direction.
As the utility model discloses a graphite substrate composite heat dissipation membrane's improvement, the grid structure be for forming in the arch of a plurality of vertically and horizontally staggered settings in the type membrane one side, arch and place from type membrane integrated into one piece.
As the utility model discloses a graphite substrate composite heat dissipation membrane's improvement, first double faced adhesive tape includes: the middle PET substrate and the acrylic adhesive layers formed on the two sides of the PET substrate.
As the utility model discloses a graphite substrate composite heat dissipation membrane's improvement, graphite unit film is two-layer, and two-layer graphite unit film is laminated compound together through another second double faced adhesive tape.
As the utility model discloses a graphite substrate composite heat dissipation membrane's improvement, the second double faced adhesive tape includes: the middle PET substrate and the acrylic adhesive layers formed on two sides of the PET substrate.
As the utility model discloses a graphite substrate composite heat dissipation membrane's improvement, compound in the last profile edge of leaving type layer and protective layer of graphite substrate layer surpasss the profile edge setting of middle graphite substrate layer.
As the utility model discloses a graphite substrate composite heat dissipation membrane's improvement, the silica gel protection film includes: the transparent polyester film comprises a middle silica gel base material, a blue polyester film positioned on one side of the middle silica gel base material and a transparent polyester film positioned on the other side of the middle silica gel base material.
As the utility model discloses a graphite substrate composite heat dissipation membrane's improvement, still be provided with the one deck PET insulating layer between protective layer and the graphite substrate layer.
As the utility model discloses a graphite substrate composite heat dissipation membrane's improvement, graphite substrate layer one side edge has keeps away a breach, cut off on leaving type layer and protective layer and extend to keep away in the breach.
As an improvement of the graphite substrate composite heat dissipation film of the present invention, the position of the cutting-off portion is close to the release layer and has a protrusion beyond the pull tab disposed at the edge of the protective layer.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a compound heat dissipation membrane of graphite substrate has realized peeling off from the centre through with parting layer and protective layer segmentation design, the problem of wrinkling when being favorable to avoiding peeling off. Meanwhile, the edge of the graphite substrate layer is protected by the edge covering design of the graphite substrate layer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view illustrating a layer structure of an embodiment of the graphite-based composite heat dissipation film of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a first embodiment of the present invention provides a graphite-based composite heat dissipation film, which includes: from type layer 1, graphite substrate layer 2 and protective layer 3, from type layer 1 complex in the one side of graphite substrate layer 2, protective layer 3 complex in the another side of graphite substrate layer 2.
In order to protect the outline edge of the graphite substrate layer 2, the embodiment is used for edge covering the graphite substrate layer 2, namely, the outline edges of the release layer 1 and the protective layer 3 which are compounded on the graphite substrate layer 2 exceed the outline edge of the middle graphite substrate layer 2, so that the outline edge of the graphite substrate layer 2 is retracted inwards, the graphite substrate layer cannot be directly contacted with the outside, and a better protection effect is achieved.
The release layer 1 includes a release film, which is compounded on one side of the graphite substrate layer 2 through a first double-sided adhesive 4. In one embodiment, the first double-sided adhesive 4 includes: the middle PET substrate and acrylic adhesive layers formed on two sides of the PET substrate. The thickness of the first double-sided adhesive 4 is preferably 0.01 mm.
When the release film is attached, in order to avoid generation of bubbles, one surface of the release film facing the graphite substrate layer 2 has a grid structure. In one embodiment, the grid structure is formed by a plurality of criss-cross protrusions formed on one surface of the release film, and the protrusions and the release film are integrally formed. So, the space between each arch communicates each other, forms and is suitable for carminative passageway to along with the laminating from the type membrane during attached, the bubble can be discharged along exhaust passage, is favorable to the laminating from the type membrane.
This peel off from type membrane from graphite substrate layer 2 when using, avoids the problem of wrinkling when for the convenience of peeling off, cuts off the setting along width direction from the middle of the type membrane. So adopt the segmentation design, can peel off to both sides from the centre during peeling off, because both sides all produce the effort to graphite substrate layer 2 this moment, and two effort opposite directions, can offset each other from this, play the effect of avoiding wrinkling of graphite substrate layer 2.
The graphite substrate layer 2 is used for realizing the function of heat dissipation of the composite heat dissipation film of the graphite substrate of the embodiment, and the graphite substrate layer 2 is formed by laminating and compounding at least two layers of graphite unit films 21. The purpose of this arrangement is that the individual graphite unit films 21 cannot be easily manufactured to be thick by the process, and therefore, the use requirement of the thickness can be favorably satisfied by the form in which the plurality of graphite unit films 21 are stacked.
In one embodiment, the graphite unit films 21 are two layers, and the two graphite unit films 21 are laminated and compounded through the second double-sided adhesive 22. In the present embodiment, the second double-sided adhesive 22 includes: the middle PET substrate and the acrylic adhesive layers formed on the two sides of the PET substrate. The thickness of the second double-sided adhesive 22 is preferably 0.005 mm.
The protective layer 3 is used to protect the other surface of the graphite base material layer 2. Specifically, the protective layer 3 includes a silica gel protective film, which is compounded on the other side of the graphite substrate layer 2 through a second double-sided adhesive 31, where the second double-sided adhesive 31 is the second double-sided adhesive 22 for realizing the lamination and compounding of the graphite unit film 21, and the layer structure and the thickness dimension of the two layers are consistent.
In addition, still be provided with one deck PET insulating layer 5 between protective layer 3 and the graphite substrate layer 2, this PET insulating layer 5 is gone up to the coating has the one deck to play the ink of mute light effect. At this time, the graphite substrate layer 2 and the PET insulating layer 5 are directly laminated together, and the PET insulating layer 5 is laminated on the other surface of the graphite substrate layer 2 through the second double-sided adhesive 31.
In one embodiment, the silicone protective film includes: the transparent polyester film comprises a middle silica gel base material, a blue polyester film positioned on one side of the middle silica gel base material and a transparent polyester film positioned on the other side of the middle silica gel base material. Wherein the thickness of the intermediate silica gel substrate is preferably 10 μm; the thickness of the blue polyester film is preferably 50 μm; the thickness of the transparent polyester film is preferably 25 μm.
Because the silica gel protection film is peeled off from graphite substrate layer 2 when using, avoid the problem of wrinkling when for the convenience of peeling off, cut off the setting along the width direction in the middle of the silica gel protection film. So adopt the segmentation design, can peel off to both sides from the centre during peeling off, because both sides all produce the effort to graphite substrate layer 2 this moment, and two effort opposite directions, can offset each other from this, play the effect of avoiding wrinkling of graphite substrate layer 2.
As described above, the cutting-off structure between the release film and the silica gel protective film along the width direction is designed to match the notch 23 on the graphite substrate layer 2 for the convenience of grasping the release film and the silica gel protective film. Specifically, a position gap 23 is kept away to 2 side edges of graphite substrate layer, and the cutting off on release layer 1 and protective layer 3 extends to in keeping away position gap 23. Meanwhile, the position close to the cutting-off position on the release layer 1 is also provided with a pull lug 11 which is arranged beyond the edge of the protective layer 3. So, when peeling off from type membrane and silica gel protection film, can not contact with graphite substrate layer 2, avoided influencing the peeling off from type membrane and silica gel protection film.
To sum up, the utility model discloses a graphite substrate composite heat dissipation membrane has realized peeling off from the centre through with type layer and protective layer segmentation design, the problem of corrugating when being favorable to avoiding peeling off. Meanwhile, the edge of the graphite substrate layer is protected by the edge covering design of the graphite substrate layer.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A graphite-based composite heat spreading film, comprising: the release layer is compounded on one surface of the graphite substrate layer, and the protective layer is compounded on the other surface of the graphite substrate layer;
the release layer comprises a release film, the release film is compounded on one surface of the graphite substrate layer through a first double faced adhesive, the surface, facing the graphite substrate layer, of the release film is provided with a grid structure, and the middle of the release film is cut off along the width direction;
the graphite substrate layer is formed by laminating and compounding at least two layers of graphite unit films;
the protective layer comprises a silica gel protective film which is compounded on the other side of the graphite substrate layer through second double-sided adhesive, and the middle of the silica gel protective film is cut off along the width direction.
2. The graphite substrate composite heat dissipation film according to claim 1, wherein the grid structure is formed by a plurality of protrusions arranged in a criss-cross manner on one surface of the release film, and the protrusions are integrally formed with the release film.
3. The graphite-based composite heat spreading film of claim 1 wherein the first double sided adhesive comprises: the middle PET substrate and the acrylic adhesive layers formed on the two sides of the PET substrate.
4. The graphite-based composite heat dissipation film according to claim 1, wherein the graphite unit films are two layers, and the two layers of graphite unit films are laminated and compounded together through another second double-sided adhesive.
5. The graphite-based composite heat dissipating film according to claim 1 or 4, wherein the second double-sided adhesive comprises: the middle PET substrate and the acrylic adhesive layers formed on two sides of the PET substrate.
6. The graphite-based composite heat dissipation film as recited in claim 1, wherein the edge profile of the release layer and the protective layer combined on the graphite substrate layer is disposed beyond the edge profile of the intermediate graphite substrate layer.
7. The graphite-based composite heat dissipating film according to claim 1, wherein the silicone protective film comprises: the transparent polyester film comprises a middle silica gel base material, a blue polyester film positioned on one side of the middle silica gel base material and a transparent polyester film positioned on the other side of the middle silica gel base material.
8. The graphite substrate composite heat dissipation film as defined in claim 1 or 7, wherein a PET insulating layer is further disposed between the protective layer and the graphite substrate layer.
9. The graphite substrate composite heat dissipation film as recited in claim 1, wherein a clearance gap is formed in one side edge of the graphite substrate layer, and the cut-off portions of the release layer and the protection layer extend into the clearance gap.
10. The graphite-based composite heat dissipation film according to claim 9, wherein a pull tab is further disposed on the release layer at a position close to the cut-off position and beyond an edge of the protection layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021150063.2U CN212211788U (en) | 2020-06-19 | 2020-06-19 | Graphite substrate composite heat dissipation film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021150063.2U CN212211788U (en) | 2020-06-19 | 2020-06-19 | Graphite substrate composite heat dissipation film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212211788U true CN212211788U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021150063.2U Active CN212211788U (en) | 2020-06-19 | 2020-06-19 | Graphite substrate composite heat dissipation film |
Country Status (1)
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|---|---|
| CN (1) | CN212211788U (en) |
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2020
- 2020-06-19 CN CN202021150063.2U patent/CN212211788U/en active Active
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