CN203456295U - Single-surface four-string type edge-reserved aluminum metalized polyester film - Google Patents
Single-surface four-string type edge-reserved aluminum metalized polyester film Download PDFInfo
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- CN203456295U CN203456295U CN201320519462.5U CN201320519462U CN203456295U CN 203456295 U CN203456295 U CN 203456295U CN 201320519462 U CN201320519462 U CN 201320519462U CN 203456295 U CN203456295 U CN 203456295U
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Abstract
The utility model discloses a single-surface four-string type edge-reserved aluminum metalized polyester film which is used as an inner core film of a capacitor, which has a four-string type structure that is obtained through stacking an upper-layer film and a lower-layer film. The width A2 of the lower-layer film is smaller than the width A1 of the upper-layer film. Furthermore the upper-layer film and the lower-layer film are respectively composed of a polyester base film and an aluminum film which is coated on the polyester base film, wherein the surface of the polyester base film of the upper-layer film is provided with a pair of symmetrical reserved edges and three segments of aluminum films are separated. The surface of the polyester base film of the lower-layer film is provided with a middle reserved edge, a pair of outside reserved edges, and two segments of aluminum films between the middle reserved edge and the pair of outside reserved edges in the width direction. The single-surface four-string type edge-reserved aluminum metalized polyester film provided by the utility model is technically advantageous in that: aluminum is adopted as a metal integrated film material; and furthermore the four-string structure is obtained through separating the aluminum film by the reserved edges and staggered overlapping; the single-surface four-string type edge-reserved aluminum metalized polyester film can effectively prevent electrochemical corrosion and relative voltage resistance on an AC condition; and the single-surface four-string type edge-reserved aluminum metalized polyester film is suitable for adjusting electric characteristics of voltage resistance, pulse, dv/dt, etc. Furthermore the specification of the film is selectable and the process deviation is controllable. Performance stability of capacitor finished product is improved.
Description
Technical field
The utility model relates to a kind of capacitor and produces base material, relates in particular to a kind of capacitor and manufactures Novel inner core film material used.
Background technology
Along with the develop rapidly of electronics industry, capacitor is as a kind of application electronic devices and components very widely, and its product consumption is also very big.Therefore the production capacity of capacitor being manufactured is had higher requirement.From the core arrangement of capacitor, it selects difference to make around volume structure by film according to the electric characteristic of capacitor.Therefore,, for improving the performance of capacitor product, certainly will seek to improve from this body structure of film of this inner core, to meet the electric property requirement of the various application of capacitor.
Technological parameter from capacitor with metallized film: the metallic vapour in vacuum coating equipment of the metal coating metallized film forms, and coating layer thickness is very thin, conventionally only has tens nanometers, directly measures difficulty larger.The thickness of metal level is generally reflected indirectly in producer by measuring sheet resistance value or current value mostly at present, and the unit of sheet resistance is Ω/, and English is translated into Resistance square.Sheet resistance is exactly square resistance, refers to that one is grown with the metallized film coating surface limit under the condition of wide (a namely square) to the resistance between limit together.Square resistance has a characteristic, and the square resistance while arriving of arbitrary size is all the same, no matter the length of side is 1m or 1mm, their sheet resistance is all the same, as long as test electrode conductive region cannot form foursquare test value and all can produce gross error.The performance index of this creation metallized film are weighed the sheet resistance of all measuring with ideal and are weighed.
Summary of the invention
The purpose of this utility model is intended to propose a kind of one side four string datas and stays limit aluminum metallization polyester film.
Above-mentioned purpose of the present utility model, to be achieved by the following technical programs: one side four string datas stay limit aluminum metallization polyester film, inner core film material as capacitor, it is characterized in that: the four string data structures of described film for being stacked to constitute by upper layer film and lower membrane, the width A2 of lower membrane is less than the width A1 of upper layer film, and upper layer film and lower membrane are made as the aluminium film of polyester base film and upper one plating thereof, wherein the polyester base film of upper layer film surface broad ways is provided with in a symmetrical couple and stays limit and separate three sections of aluminium films, the polyester base film surface broad ways of lower membrane is provided with an intermediately remained border and and externally stays limit and two sections of aluminium films therebetween.
Further, outside in described upper layer film, the width C 1 of two sections of aluminium films is less than the width C 2 of middle one section of aluminium film.
Further, two sections of aluminium films of described lower membrane are isometric, and in lower membrane, the width C 3 of aluminium film is more than or equal to the width C 2 of one section of aluminium film in the middle of upper layer film.
Further, the width B 1 of described Nei Liubian and the width B 3 of intermediately remained border equate and are all greater than the outer width B 2 of staying limit.
Apply one side four string datas of the present utility model and stay limit aluminum metallization polyester film, its technological merit shows as: this film adopts aluminium as the film material of metal-integral, and limit section gap aluminium film the staggered four string data structures that are stacked to constitute are stayed in employing, can effectively prevent that electrochemical corrosion under interchange condition is with relative withstand voltage, be suitable for adjusting the electrical characteristic such as withstand voltage, pulse, dv/dt of capacitor.And specification multiselect and the process deviation of this film are controlled, improved capacitor end properties stability.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram that the utility model one side four string datas stay limit aluminum metallization polyester film one preferred embodiment.
Embodiment
Below just accompanying drawing in conjunction with the embodiments, is described in further detail embodiment of the present utility model, so that technical solutions of the utility model are easier to understand, grasp.The utility model, for the ever-increasing Production requirement of capacitor and performance boost requirement, carries out ameliorative research to the inner core film material of this capacitor.
As shown in Figure 1, be the cross section structure schematic diagram that the utility model one side four string datas stay limit aluminum metallization polyester film one preferred embodiment.From illustrating the four string data structures of visible this film for being stacked to constitute by upper layer film and lower membrane, the width A2 of lower membrane is less than the width A1 of upper layer film, and upper layer film and lower membrane are all made as the aluminium film 22 of polyester base film 11 and upper one plating thereof, wherein the polyester base film of upper layer film surface broad ways is provided with and in a symmetrical couple, stays 33 and separate three sections of aluminium films, and the polyester base film surface broad ways of lower membrane is provided with an intermediately remained border 31 and and externally stays limit 32 and two sections of aluminium films therebetween.
From diagram, be also shown in, in this upper layer film, the width C 1 of the two sections of aluminium films in outside is less than the width C 2 of middle one section of aluminium film; And two sections of aluminium films of lower membrane are isometric, and in lower membrane, the width C 3 of aluminium film is more than or equal to the width C 2 of one section of aluminium film in the middle of upper layer film.In addition, the width B 1 of above-mentioned Nei Liubian and the width B 3 of intermediately remained border equate and are all greater than the outer width B 2 of staying limit.
It should be noted that, above-mentioned one side four string datas stay in limit aluminum metallization polyester film, and polyester base film is Korea S SKC SC42 type PET basement membrane for example.
The above-mentioned various limit of staying is intended to ensure that capacitor has certain dielectric strength between double-layer films in reeling up and down.But the width that stays limit selects to have certain scope, the effective area that too conference reduces electric capacity causes cost waste, and too little meeting makes that the high voltage bearing safe distance of capacitor is not enough, easy creepage generation arcing.
Above-mentioned aluminium film forms the pole plate of capacitor and has good self-healing property.This is a region that forms capacitance and keep a most critical of the electric characteristic of capacitor, it should guarantee suitable metal ingredient ratio, prevent the electrochemical corrosion under interchange condition, can improve the relatively withstand voltage of capacitor, select the suitable coat of metal can change equally the electrical characteristics such as capacitor is withstand voltage, pulse, dv/dt simultaneously.By upper and lower tunic is stacked, four sections of separated metallization sections that form by staying limit to be separated by have been formed, i.e. four string data structures.
The concrete specifications parameter of this film is with two products (mm of unit) as shown in the table:
| Sequence number | A1 | A2 | B1 | B2 | B3 | C1 | C2 | C3 |
| 1 | 10 | 9.0 | 0.8 | 0.6 | 0.8 | 2.5 | 3.4 | 3.5 |
| 2 | 15 | 14 | 0.8 | 0.5 | 0.8 | 3.7 | 6.0 | 6.1 |
, it also has some other parameter, and thickness as conventional in it is between 1.5 μ m-12 μ m; Its sheet resistance is between 1-2.5 Ω/, and deviation range is ± 30%.
When this film is applied to capacitor production, adopt four string data capacitance structures, upper and lower tunic centering is stacked, make the outer edge of the relative upper layer film in limit that stays of lower membrane all be recessed shape, by respectively staying limit to be separated by, form four sections of paired aluminium film groups like this.Again by the double-layer films being stacked around being rolled into column, in column, around the both ends of the surface of volume metal spraying extraction electrode respectively, then by other common process, complete the manufacturing of capacitor.
By above-mentioned character express, can find out, advantage of the present utility model is remarkable: this film adopts aluminium as the film material of metal-integral, and limit section gap aluminium film the staggered four string data structures that are stacked to constitute are stayed in employing, can effectively prevent that electrochemical corrosion under interchange condition is with relative withstand voltage, be suitable for adjusting the electrical characteristic such as withstand voltage, pulse, dv/dt of capacitor.And specification multiselect and the process deviation of this film are controlled, improved capacitor end properties stability.
In addition to the implementation, the utility model can also have other execution mode.All employings are equal to the technical scheme of replacement or equivalent transformation formation, within all dropping on the utility model scope required for protection.
Claims (1)
1. one side four string datas stay limit aluminum metallization polyester film, inner core film material as capacitor, it is characterized in that: the four string data structures of described polyester film for being stacked to constitute by upper layer film and lower membrane, the width A2 of lower membrane is less than the width A1 of upper layer film, and upper layer film and lower membrane are made as the aluminium film of polyester base film and upper one plating thereof, wherein the polyester base film of upper layer film surface broad ways is provided with in a symmetrical couple and stays limit and separate three sections of aluminium films, and the polyester base film surface broad ways of lower membrane is provided with an intermediately remained border and and externally stays limit and two sections of aluminium films therebetween; In described upper layer film, the width C 1 of the two sections of aluminium films in outside is less than the width C 2 of middle one section of aluminium film, in the isometric and lower membrane of two sections of aluminium films of described lower membrane, the width C 3 of aluminium film is more than or equal to the width C 2 of one section of aluminium film in the middle of upper layer film, and the width B 1 of described Nei Liubian equates with the width B 3 of intermediately remained border and is all greater than the width B 2 of staying limit outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320519462.5U CN203456295U (en) | 2013-08-23 | 2013-08-23 | Single-surface four-string type edge-reserved aluminum metalized polyester film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320519462.5U CN203456295U (en) | 2013-08-23 | 2013-08-23 | Single-surface four-string type edge-reserved aluminum metalized polyester film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456295U true CN203456295U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320519462.5U Expired - Lifetime CN203456295U (en) | 2013-08-23 | 2013-08-23 | Single-surface four-string type edge-reserved aluminum metalized polyester film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456295U (en) |
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2013
- 2013-08-23 CN CN201320519462.5U patent/CN203456295U/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |