CN207869594U - Novel EMI film - Google Patents
Novel EMI film Download PDFInfo
- Publication number
- CN207869594U CN207869594U CN201721903711.5U CN201721903711U CN207869594U CN 207869594 U CN207869594 U CN 207869594U CN 201721903711 U CN201721903711 U CN 201721903711U CN 207869594 U CN207869594 U CN 207869594U
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- Prior art keywords
- line
- worn
- layer
- release film
- out glue
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- Expired - Fee Related
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses a kind of novel EMI films, it includes the first release film layer, black oil lamella, conductive adhesive layer, the second release film layer and the worn-out glue-line of screen, metal powder interlayer is equipped in the worn-out glue-line of the screen, first release film layer, black oil lamella, the worn-out glue-line of screen, conductive adhesive layer and the second release film layer are bonded successively according to sequence from top to bottom；The structure design of the utility model is reasonable, ingenious to shield equipped with metal powder interlayer in worn-out glue-line, to replace traditional metal layer, it is likewise supplied with shield effectiveness, strong antijamming capability effectively saves electroplating work procedure and expensive electroplating device, simplify production technology, substantially reduces cost；And it is laminating on shielding worn-out glue-line have black oil lamella, effectively promote high temperature resistant, radiation hardness, resistant to chemical etching and electrical insulation capability, good combination property, in addition whole soft good, easy to process, job stability, highly practical, is conducive to wide popularization and application.
Description
Technical field
The utility model is related to shield technical field of membrane, more particularly to a kind of to have a shield effectiveness and at low cost is novel
EMI films.
Background technology
In recent years, with the generally use of radiotechnics, electromagnetic pollution is more and more common, while circuit low-voltage itself
The use of low-power consumption so that the ability of the electromagnetism interference (EMI) of circuit itself is remarkably decreased.In product casing plating anti-EMI filter
Film not only can protect this product not influenced by extraneous EMI, but also can reduce itself to extraneous interference, European Union 89/336/
EEC (EMC) standard oneself must be in the anti-EM works film of product casing inner wall plating through explicitly pointing out electronic product.Screen used at present
Covering material mainly has conductivity type, filled-type, Intrinsical and inhales wave mode, and preparation method is mainly metal foil, sputtering plating, plating
Or the methods of chemical plating and coating conductive coating.
More and more intensive with flexible circuit board wiring route, the requirement to electromagnetic shielding film is higher and higher, shielding effect
Electromagnetic shielding film that can be more than 60db is increasingly favored by market.Shield effectiveness has direct relationship with conducting, is connected
Numerical value is smaller, and shield effectiveness is higher.
Chinese invention patent Publication No. CN104853577 discloses a kind of ultra-thin electromagnetic screened film and preparation method, should
It is in netted that the ultra-thin electromagnetic screened film provided, which is invented, by glue-line setting, and conductive metal is filled in the netted hole of glue-line,
It is placed in the netted intrapore webbed electro-magnetic screen layer of conductive metal layer structure of glue-line, realizes effectiveness.According to this
Invent provide ultra-thin electromagnetic screened film, by by glue-line setting in it is netted, will be for realizing the conductive gold of effectiveness
Belong to layer to be filled in the netted hole of glue-line so that ultra-thin electromagnetic screened film provided by the invention is not influencing effectiveness
Under the premise of thickness can reach 81 microns or less.However the invention electromagnetic shielding film glue-line is netted, when metal layer
The edge of grid cannot come into full contact with metal, and the conducting coefficient of electromagnetic shielding film is caused to increase, capability of electromagnetic shielding by
It influences.
Chinese invention patent number 201710492858.8 discloses a kind of electromagnetic shielding film, the electromagnetic shielding film include according to
Carrier layer, insulating layer, the first conductive adhesive layer, metal layer, the second conductive adhesive layer and the release film layer of secondary connection, wherein described
One conductive adhesive layer contains aluminium powder and/or magnesium powder, and second conductive adhesive layer contains nickel powder and/or cobalt powder.Although its can realize compared with
Good effectiveness, but it is provided with metal layer, cost is higher, and is that special electroplating device is needed to pass through electroplating work procedure
Realize the formation of metal layer, tedious process, the production cycle is long, and electroplating device is expensive, causes its overall cost higher,
It is unfavorable for promoting and applying.
Utility model content
Against the above deficiency, the utility model aim is to provide a kind of smart structural design, rationally, and shield effectiveness is good,
And novel EMI film at low cost.
To achieve the above object, the technical solution provided is the utility model：
A kind of novel EMI film comprising the first release film layer, black oil lamella, conductive adhesive layer, the second release film layer and screen
Worn-out glue-line, the worn-out glue-line of the screen is interior to be equipped with metal powder interlayer, first release film layer, black oil lamella, the worn-out glue-line of screen, conducting resinl
Layer and the second release film layer are bonded successively according to sequence from top to bottom.
As a kind of improvement of the utility model, the thickness of first release film layer is 50~75 microns.
As a kind of improvement of the utility model, the thickness of the black oil lamella is 5~10 microns.
As a kind of improvement of the utility model, the thickness of the worn-out glue-line of screen is 5~10 microns.
As a kind of improvement of the utility model, the thickness of the conductive adhesive layer is 5~15 microns.
As a kind of improvement of the utility model, the thickness of second release film layer is 38~75 microns.
The beneficial effects of the utility model are：The structure design of the utility model is reasonable, ingenious to shield in worn-out glue-line equipped with gold
Belong to powder interlayer, to replace traditional metal layer, is likewise supplied with shield effectiveness, strong antijamming capability effectively saves electroplating work procedure
With expensive electroplating device, simplifies production technology, substantially reduce cost；And laminating on shielding worn-out glue-line there is black oil film
Layer effectively promotes high temperature resistant, radiation hardness, resistant to chemical etching and electrical insulation capability, and good combination property is in addition whole soft good, easily
In processing, job stability is highly practical, is conducive to wide popularization and application.
Description of the drawings
Fig. 1 is the cross section structure schematic diagram of the utility model.
Specific implementation mode
Embodiment：Referring to Fig. 1, the utility model embodiment provides a kind of novel EMI film comprising the first release film layer 1,
Black oil lamella 2, conductive adhesive layer 3, the second release film layer 4 and the worn-out glue-line 5 of screen, the worn-out glue-line 5 of the screen is interior to be equipped with metal powder interlayer 6,
First release film layer 1, black oil lamella 2, the worn-out glue-line 5 of screen, conductive adhesive layer 3 and the second release film layer 4 are according to from top to bottom
Sequence be bonded successively.Preferably, be also fitted with aluminium foil layer between the conductive adhesive layer 3 and the second release film layer 4, with into one
Step promotes shielding properties, avoids interfering.The thickness of the copper foil layer is 15~30 microns, preferably 15 microns, 18 microns, 20 microns
Or 28 microns, to have shielded effect.
The conductive adhesive layer 3 is that a certain proportion of metal charge is uniformly mixed in sizing material.Shield worn-out glue-line 5 and conductive adhesive layer
3 structure is different.Shield worn-out glue-line 5 and specifically include lower glue layer, metal bisque and lower glue layer, one layer is first coated on conductive adhesive layer 3
Glue forms lower glue layer, and then in the middle section of lower glue layer, uniform spreading has metal charge to form metal bisque, is careful not to coat
At the peripheral position of lower glue layer；Then it is coated with one layer of glue and forms upper glue layer, the centre position of the upper glue layer is laminating in metal
On bisque, and peripheral position and lower glue layer are mutually laminating.Metal powder is fixed by lower glue layer and lower glue layer, passes through metal
Bisque replaces conventional metal layer structure, is likewise supplied with shield effectiveness, strong antijamming capability effectively saves electroplating work procedure and price
Expensive electroplating device simplifies production technology, substantially reduces cost.
Specifically, the thickness of first release film layer 1 is 50~75 microns, preferably 50 microns, 55 microns, 60 microns
Or 75 microns.The thickness of the black oil lamella 2 is 5~10 microns.Preferably 5 microns, 7 microns, 8 microns or 10 microns.Institute
State that shield the thickness of worn-out glue-line 5 be 5~10 microns.Preferably 5 microns, 8 microns, 9 microns or 10 microns.The conductive adhesive layer 3
Thickness is 5~15 microns.Preferably 5 microns, 10 microns, 12 microns or 15 microns.The thickness of second release film layer 4 is 38
~75 microns.Preferably 38 microns, 42 microns, 63 microns or 75 microns.
In use, shielding equipped with metal powder interlayer 6 in worn-out glue-line 5 since the utility model is ingenious, it is traditional to replace
Metal layer is likewise supplied with shield effectiveness, and strong antijamming capability effectively saves electroplating work procedure and expensive electroplating device, letter
Metaplasia production. art, substantially reduces cost；And it is laminating on shielding worn-out glue-line 5 have black oil lamella 2, effectively promote high temperature resistant, resistance to
Radiation, resistant to chemical etching and electrical insulation capability, good combination property are applied widely.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is changed.Therefore, the utility model is not limited to specific implementation mode disclosed and described above, right
Some modifications and changes of the utility model should also be as falling into the protection scope of the claims of the present utility model.In addition, to the greatest extent
Some specific terms are used in pipe this specification, these terms are merely for convenience of description, not to the utility model
Any restrictions are constituted, using same or similar other membrane bodies, in scope of protection of the utility model.
Claims (6)
1. a kind of novel EMI film, which is characterized in that it include the first release film layer, black oil lamella, conductive adhesive layer, second from
Type film layer and the worn-out glue-line of screen, the worn-out glue-line of the screen is interior to be equipped with metal powder interlayer, and first release film layer, shields us at black oil lamella
Glue-line, conductive adhesive layer and the second release film layer are bonded successively according to sequence from top to bottom.
2. novel EMI film according to claim 1, which is characterized in that the thickness of first release film layer is 50~75
Micron.
3. novel EMI film according to claim 1, which is characterized in that the thickness of the black oil lamella is 5~10 micro-
Rice.
4. novel EMI film according to claim 1, which is characterized in that the thickness of the worn-out glue-line of screen is 5~10 microns.
5. novel EMI film according to claim 1, which is characterized in that the thickness of the conductive adhesive layer is 5~15 microns.
6. novel EMI film according to claim 1, which is characterized in that the thickness of second release film layer is 38~75
Micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721903711.5U CN207869594U (en) | 2017-12-29 | 2017-12-29 | Novel EMI film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721903711.5U CN207869594U (en) | 2017-12-29 | 2017-12-29 | Novel EMI film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207869594U true CN207869594U (en) | 2018-09-14 |
Family
ID=63463725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721903711.5U Expired - Fee Related CN207869594U (en) | 2017-12-29 | 2017-12-29 | Novel EMI film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207869594U (en) |
-
2017
- 2017-12-29 CN CN201721903711.5U patent/CN207869594U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 Termination date: 20201229 |