CN219658555U - Multi-string dampproof metallized film - Google Patents
Multi-string dampproof metallized film Download PDFInfo
- Publication number
- CN219658555U CN219658555U CN202321304552.2U CN202321304552U CN219658555U CN 219658555 U CN219658555 U CN 219658555U CN 202321304552 U CN202321304552 U CN 202321304552U CN 219658555 U CN219658555 U CN 219658555U
- Authority
- CN
- China
- Prior art keywords
- insulating base
- base film
- coating
- metal coating
- film
- 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
- 239000011104 metalized film Substances 0.000 title claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 71
- 238000000576 coating method Methods 0.000 claims abstract description 71
- 239000002184 metal Substances 0.000 claims abstract description 52
- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 239000010408 film Substances 0.000 claims abstract description 41
- 238000007747 plating Methods 0.000 claims abstract description 22
- 230000008719 thickening Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- 239000003990 capacitor Substances 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The utility model belongs to the technical field of metallized films, and particularly relates to a multi-string dampproof metallized film, which comprises a first insulating base film, a second insulating base film, a first metal plating layer positioned on the first insulating base film and a second metal plating layer positioned on the second insulating base film; one side of each of the first metal coating and the second metal coating is provided with a side reserved edge, and a moistureproof belt is arranged on the side reserved edge; the first metal coating and the second metal coating are both provided with inner reserved edges. The utility model has simple structure, can effectively prevent moisture from entering the inside of the metallized film, and reduces the corrosion of the moisture to the plating layer.
Description
Technical Field
The utility model belongs to the technical field of metallized films, and particularly relates to a multi-string dampproof metallized film.
Background
The metallized film is formed by vapor deposition of aluminum or zinc on the surface of a thin film in a vacuum state, and is used for manufacturing a capacitor by winding. Currently, most of inner-string and multi-string metallized films on the market have a film structure without a thickened area or with only thickened edges. The prior art discloses a corona-resistant metallized film with a publication number of CN209249292U, which can effectively resist corrosion of corona to the interior of the metallized film, as shown in figure 1 in the attached drawings of the specification; however, in the existing metallized film, in the process of film evaporation and capacitor manufacturing process, the air gap inside cannot be completely avoided, and the influence of later-stage water vapor entering the gap on the metallized film cannot be completely avoided; after entering, moisture is easy to cause ionization at the reserved edge of the metallized film in an alternating current working environment, so that the capacitor is invalid.
Disclosure of Invention
Aiming at the technical problem that the metallized film in the background technology is easy to enter moisture to affect a capacitor, the utility model provides the multi-string dampproof metallized film which has a simple structure, can effectively prevent the moisture from entering the metallized film and reduce the corrosion of the moisture to a plating layer.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
a multi-string moisture-proof metallized film comprising a first insulating base film and a second insulating base film, and further comprising a first metal plating layer on the first insulating base film and a second metal plating layer on the second insulating base film; one side of each of the first metal coating and the second metal coating is provided with a side reserved edge, and a moistureproof belt is arranged on the side reserved edge; the first metal coating and the second metal coating are both provided with inner reserved edges.
Further, a first blank margin is reserved between the first metal coating and the second metal coating and the moistureproof belt.
Further, a second blank margin is arranged between the edges of the first insulating base film and the second insulating base film and the moisture-proof belt.
Further, the moisture-proof belt on the first insulating base film is located at one side of the first metal coating, and the arrangement sequence of the moisture-proof belt on the second insulating base film and the second metal coating is opposite to that of the moisture-proof belt on the first insulating base film and the first metal coating.
Further, the first metal coating and the second metal coating are divided into a first coating area and a second coating area by the inner reserved edge, and the area of the first coating area is smaller than that of the second coating area.
Further, the moisture barrier tape is located on a side of the second plating region remote from the first plating region.
Further, the edges of the first coating area and the second coating area are respectively provided with a thickening area at one side far away from the insulating base film.
The utility model has the following advantages and beneficial effects:
the moisture-proof belt can effectively prevent the moisture from entering the metallized film after winding and forming to cause oxidation corrosion to the plating layer, thereby improving the moisture-proof capacity of the capacitor. The inner reserved edge is matched with the thickened area, so that corrosion of corona to the plating layer can be resisted, and the oxidation speed of the plating layer can be reduced.
Drawings
FIG. 1 is a schematic diagram of a prior art corona resistant metallized film;
FIG. 2 is a schematic illustration of a first metal coating structure of a multi-string moisture resistant metallized film provided by the present utility model;
FIG. 3 is a schematic illustration of a second metal coating structure of the multi-string moisture resistant metallized film provided by the present utility model;
FIG. 4 is a schematic diagram of a two-layer metallized film combination of a multi-string moisture-proof metallized film according to the present utility model;
icon: 1-first insulating base film, 2-first coating area, 3-second coating area, 4-dampproof band, 5-thickening area, 6-second insulating base film.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 4, a multi-string moisture-proof metallized film comprises a first insulating base film 1 and a second insulating base film 6, and further comprises a first metal plating layer on the first insulating base film 1 and a second metal plating layer on the second insulating base film 6; one side of each of the first metal coating and the second metal coating is provided with a side-to-side gap, and the side-to-side gap is provided with a moistureproof belt 4; the first metal coating and the second metal coating are both provided with inner left edges, as shown in fig. 2.
A first blank margin is reserved between the first metal coating and the second metal coating and the moistureproof belt; a second blank margin is arranged between the edges of the first insulating base film 1 and the second insulating base film 6 and the moisture-proof belt 4. In other words, the moisture-proof tape 4 divides the margin into a first margin and a second margin. The dampproof belt 4 can be made of aluminum metal with good water stability, is not connected with a metal coating, plays a role in isolating water from entering the inside of the metallized film, and avoids oxidation corrosion. The second blank margin provided at the edges of the moisture-proof belt 4 and the insulating base film is used for preventing the formation of micro capacitance during metal spraying of the edges in the subsequent processing process, and the main body capacitance is affected if the micro capacitance is generated.
The moisture-proof belt 4 on the first insulating base film 1 is located at one side of the first metal plating layer, and the arrangement sequence of the moisture-proof belt 4 and the second metal plating layer on the second insulating base film 6 is opposite to that of the moisture-proof belt 4 and the first metal plating layer on the first insulating base film 1, as shown in fig. 3. The two metallized films are stacked on each other to form a string structure with the moisture barrier strips 4 on the two metallized films on opposite sides as shown in fig. 4.
The working principle of the first embodiment is as follows: the metal coating is isolated from the outside by the moisture-proof belt 4, so that the oxidation corrosion of the coating caused by the moisture entering the inside of the metallized film after winding and forming can be effectively prevented, and the moisture-proof capacity of the capacitor is improved.
Example two
On the basis of the first embodiment, the first metal coating and the second metal coating are divided into a first coating area 2 and a second coating area 3 by the inner reserved edge, the area of the first coating area 2 is smaller than that of the second coating area 3, and the area of the first coating area 2 is smaller than that of the second coating area 3. The moisture barrier tape 4 is located on the side of the second coating region 3 remote from the first coating region 2. The edges of the first coating region 2 and the second coating region 3 are provided with a thickening region 5 at one side far away from the insulating base film, and the thickening region 5 can be thickened by zinc metal coating. The inner reserved edge and the low sheet resistance area formed by the thickened area 5 can effectively resist electrochemical corrosion of the plating layer caused by corona and reduce the oxidation speed of the plating layer under the influence of an electric field and an air gap when the corona is generated. When two layers of metallized films are overlapped, the overlapped structure is shown in figure 4; the first coating area 2 and the second coating area 3 on the first insulating base film 1 are staggered and opposite to the first coating area 2 and the second coating area 3 on the second insulating base film 6, and the thickening areas 5 are staggered, so that the fact that the thickening areas 5 are opposite to each other can be avoided, and the capacitor failure caused by insufficient voltage-resisting capacity of the metallized film is avoided.
The working principle of the utility model is as follows: through the mutual matching of the thickened area 5 and the inner reserved edge, under the influence of an electric field and an air gap, when corona is generated, the electrochemical corrosion of the plating layer caused by the corona can be effectively resisted, and the oxidation speed of the plating layer is reduced; meanwhile, the thickening areas 5 of the two layers of metallized films are arranged in a staggered mode, so that capacitance failure caused by insufficient voltage-resistant capability of the metallized films due to the fact that the thickening areas 5 are opposite can be avoided.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The multi-string moistureproof metallized film is characterized by comprising a first insulating base film (1) and a second insulating base film (6), and further comprising a first metal plating layer positioned on the first insulating base film (1) and a second metal plating layer positioned on the second insulating base film (6);
one side of each of the first metal coating and the second metal coating is provided with a side-to-side gap, and the side-to-side gap is provided with a moistureproof belt (4); the first metal coating and the second metal coating are both provided with inner reserved edges.
2. The multi-string moisture resistant metallized film of claim 1, wherein: and a first blank margin is reserved between the first metal coating and the second metal coating and between the first metal coating and the moisture-proof belt (4).
3. The multi-string moisture resistant metallized film of claim 1, wherein: a second blank margin is arranged between the edges of the first insulating base film (1) and the second insulating base film (6) and the moisture-proof belt (4).
4. The multi-string moisture resistant metallized film of claim 1, wherein: the moistureproof belt (4) on the first insulating base film (1) is positioned on one side of the first metal coating, and the moistureproof belt (4) on the second insulating base film (6) and the second metal coating are opposite to the moistureproof belt (4) on the first insulating base film (1) and the first metal coating in arrangement sequence.
5. The multi-string moisture resistant metallized film of claim 4, wherein: the first metal coating and the second metal coating are divided into a first coating area (2) and a second coating area (3) by the inner reserved edge, and the area of the first coating area (2) is smaller than that of the second coating area (3).
6. The multi-string moisture resistant metallized film of claim 5, wherein: the moisture-proof belt (4) is positioned on the side of the second coating region (3) away from the first coating region (2).
7. The multi-string moisture resistant metallized film of claim 5, wherein: and a thickening area (5) is arranged at one side of the edges of the first coating area (2) and the second coating area (3) far away from the insulating base film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321304552.2U CN219658555U (en) | 2023-05-26 | 2023-05-26 | Multi-string dampproof metallized film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321304552.2U CN219658555U (en) | 2023-05-26 | 2023-05-26 | Multi-string dampproof metallized film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219658555U true CN219658555U (en) | 2023-09-08 |
Family
ID=87879706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321304552.2U Active CN219658555U (en) | 2023-05-26 | 2023-05-26 | Multi-string dampproof metallized film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219658555U (en) |
-
2023
- 2023-05-26 CN CN202321304552.2U patent/CN219658555U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR860000968B1 (en) | Metal film condenser | |
| US6631068B1 (en) | Segmented metallized film | |
| CN219658555U (en) | Multi-string dampproof metallized film | |
| JP2006269727A (en) | Metallized film capacitor | |
| CN209471832U (en) | A kind of metallized polypropylene film for capacitor | |
| JP2015035505A (en) | Metalized film capacitor | |
| CN103456492B (en) | High-sheet-resistancaluminum aluminum membrane | |
| CN212182159U (en) | Metallized safety explosion-proof membrane | |
| US4502095A (en) | Regenerable electric layer capacitor | |
| CN214898116U (en) | High moisture resistance metallized film and capacitor | |
| CN102496455A (en) | Middle margin single-layer metallized film capacitor | |
| CN207052452U (en) | A kind of low noise Metallized polyester film | |
| CN202230884U (en) | Aluminium electrolytic capacitor | |
| CN209722275U (en) | A kind of narrow double wave cuts metallized polyester film | |
| CN220753240U (en) | DC-LINK new energy plastic shell capacitor | |
| CN209249292U (en) | A kind of anti-corona metalized film of inner series | |
| CN207052458U (en) | A kind of three-level step type evaporation metal film | |
| CN209822471U (en) | Novel moisture-proof heat-resistant shape restraining film capacitor | |
| CN203250641U (en) | Ripple resistant aluminium electrolytic capacitor | |
| CN216597295U (en) | Thin film capacitor | |
| CN220808762U (en) | High-voltage-resistant metallized polymer dielectric film and capacitor | |
| JPH03234010A (en) | Metallized film capacitor | |
| CN206059176U (en) | A kind of resistance-capacitance depressurization capacitor of high dynamic performance | |
| JP6742898B2 (en) | Method for manufacturing metallized film capacitor | |
| JPS58153322A (en) | Condenser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |