CN205542165U - Gum polytetrafluoroethylene area - Google Patents
Gum polytetrafluoroethylene area Download PDFInfo
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- CN205542165U CN205542165U CN201620034193.7U CN201620034193U CN205542165U CN 205542165 U CN205542165 U CN 205542165U CN 201620034193 U CN201620034193 U CN 201620034193U CN 205542165 U CN205542165 U CN 205542165U
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- Prior art keywords
- gum
- ptfe film
- utility
- model
- teflin tape
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Abstract
The utility model relates to a cable technology field, especially a gum polytetrafluoroethylene area, be in including micropore PTFE film and setting hot -melt adhesive layer on the micropore PTFE film, the utility model discloses a gum polytetrafluoroethylene area is owing to adopt micropore PTFE film, and PTFE's dielectric constant is low, and it is low consequently to compare its dielectric loss with the screened film of prevailing PET material, has the micropore to make at micropore PTFE film in addition the utility model discloses a dielectric constant is lower.
Description
Technical field
This utility model relates to technical field of cables, particularly a kind of gum teflin tape.
Background technology
Other good of the anti-electromagnetic interference (EMI) energy force rate of coaxial cable is the biggest for the potentiality of the communications industry.
Coaxial cable generally comprises inner wire and outer conductor, is filled with dielectric between inner wire and outer conductor, and outer conductor is wrapped with sheath.Inner wire is formed by many circular heart yearns are stranded, and stranded mode typically uses the mode of the most multiple strand.
High frequency or high speed signal are easily subject to interference in transmitting procedure, therefore, in order to improve the quality of transmission signal, it will usually inner conductors shields on coax.
In order to carry out reaching the purpose of shielding, generally at dielectric outer wrapping one screened film of inner wire, the structure of existing screened film is generally hot melt adhesive layer, pet layer and Copper Foil or aluminium foil layer from top to bottom, although this screened film also can play certain shielding action, but in terms of high speed or high frequency signal transmission, owing to the dielectric constant of PET is higher by generally higher than 2.1, therefore dielectric loss is high.
Utility model content
This utility model is in order to solve the current screened film problem that dielectric loss is high in high speed or high-frequency signal transmission wire, shield effectiveness is the best, and a kind of gum teflin tape provided.
For reaching above-mentioned functions, the technical scheme that this utility model provides is:
A kind of gum teflin tape, including microporous PTFE film and the hot melt adhesive layer being arranged on described microporous PTFE film.
Preferably, described microporous PTFE film is through sided corona treatment.
Preferably, described gum teflin tape also includes that metal foil layer and composite layer, described composite layer and described metal foil layer are successively set on described microporous PTFE film.
Preferably, described composite layer uses olefin polymer.
Preferably, described composite layer uses EVA or EAA material.
Preferably, described metal foil layer is aluminium foil layer or copper foil layer.
The beneficial effects of the utility model are: gum teflin tape of the present utility model is owing to using microporous PTFE film, and the dielectric constant of PTFE is low, therefore compared with the screened film of existing PET material, its dielectric loss is low, additionally has micropore to make dielectric constant of the present utility model lower at microporous PTFE film.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one；
Fig. 2 is the structural representation of embodiment two.
Detailed description of the invention
Below in conjunction with the accompanying drawings 1 and accompanying drawing 2 this utility model is further elaborated:
Embodiment one:
A kind of gum teflin tape as shown in Figure 1, including microporous PTFE film 1 and the hot melt adhesive layer 2 being arranged on microporous PTFE film.
Micropore on microporous PTFE film 1 through simple tension thermal finalization by PTFE thin film, is made to be formed on thin film hole, obtains the micropore along PTFE thin film overall distribution, and the aperture of micropore is generally 1～50um, and the existence of micropore advantageously reduces the dielectric constant of PTFE thin film.
Embodiment two:
A kind of gum teflin tape as shown in Figure 2, includes metal foil layer 3, composite layer 4, microporous PTFE film 1 and hot melt adhesive layer 2 the most successively, is gluedd joint by composite layer 4 between metal foil layer 3 and microporous PTFE film 1.In the present embodiment, metal foil layer 3 is aluminium foil layer, and certainly during actually used, we can also use Copper Foil etc. as metal foil layer 3 as required.
During producing, microporous PTFE film 1 processes through corona, friction, hacking etc., thus improves the surface toughness of PTFE thin film.
The olefin polymer of composite layer 4 preferably less than dielectric constant, such as EVA or EAA etc., owing to composite layer 4 is nonpolarity or low pole, reduce further dielectric constant of the present utility model with microporous PTFE film 1 after coordinating.
Embodiment described above, simply preferred embodiments of the present utility model, not limit practical range of the present utility model, therefore all equivalences done according to structure, feature and the principle described in this utility model claim change or modify, and all should be included in this utility model patent claim.
Claims (6)
1. a gum teflin tape, it is characterised in that: include microporous PTFE film and the hot melt adhesive layer being arranged on described microporous PTFE film.
2. a kind of gum teflin tape as claimed in claim 1, it is characterised in that: described microporous PTFE film is through sided corona treatment.
3. a kind of gum teflin tape as claimed in claim 1, it is characterised in that: described gum teflin tape also includes that metal foil layer and composite layer, described composite layer and described metal foil layer are successively set on described microporous PTFE film.
4. a kind of gum teflin tape as claimed in claim 3, it is characterised in that: described composite layer uses olefin polymer.
5. a kind of gum teflin tape as claimed in claim 3, it is characterised in that: described composite layer uses EVA or EAA material.
6. a kind of gum teflin tape as described in claim 4 or 5, it is characterised in that: described metal foil layer is aluminium foil layer or copper foil layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620034193.7U CN205542165U (en) | 2016-01-14 | 2016-01-14 | Gum polytetrafluoroethylene area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620034193.7U CN205542165U (en) | 2016-01-14 | 2016-01-14 | Gum polytetrafluoroethylene area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205542165U true CN205542165U (en) | 2016-08-31 |
Family
ID=56763646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620034193.7U Active CN205542165U (en) | 2016-01-14 | 2016-01-14 | Gum polytetrafluoroethylene area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205542165U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545425A (en) * | 2018-09-30 | 2019-03-29 | 天津大学 | A kind of high-temperature superconductive cable low loss insulation and preparation method |
| CN110310781A (en) * | 2019-06-18 | 2019-10-08 | 芜湖航天特种电缆厂股份有限公司 | The processing method of ribbon cable with shielded layer and sheath |
-
2016
- 2016-01-14 CN CN201620034193.7U patent/CN205542165U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545425A (en) * | 2018-09-30 | 2019-03-29 | 天津大学 | A kind of high-temperature superconductive cable low loss insulation and preparation method |
| CN110310781A (en) * | 2019-06-18 | 2019-10-08 | 芜湖航天特种电缆厂股份有限公司 | The processing method of ribbon cable with shielded layer and sheath |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |