CN203456296U - Double-surface aluminum-metalized polyester film with middle edges - Google Patents
Double-surface aluminum-metalized polyester film with middle edges Download PDFInfo
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- CN203456296U CN203456296U CN201320519464.4U CN201320519464U CN203456296U CN 203456296 U CN203456296 U CN 203456296U CN 201320519464 U CN201320519464 U CN 201320519464U CN 203456296 U CN203456296 U CN 203456296U
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Abstract
The utility model discloses a double-surface aluminum-metalized polyester film with middle edges, which is used as an inner-core film of a capacitor. Particularly, the double-surface aluminum-metalized polyester film provided by the utility model is composed of the following components: a polyester base film, and aluminum films which are integrally plated on the upper surface and the lower surface of the polyester base film. Furthermore the upper surface and the lower surface of the polyester base film are respectively provided with a middle edge at the central part in the width direction for separating two aluminum film segments. The summation of the width each middle edge and the width of aluminum films at two sides is same with the width of the polyester base film. The double-surface aluminum-metalized polyester film provided by the utility model is technologically characterized in that: the aluminum is adopted as the integrated film layer material; and a two-string type structure is formed through adopting the middle edges on double surfaces and stacking with the polyester base film; electrochemical corrosion and relative overvoltage resistance on AC condition can be effectively prevented; and the double-surface aluminum-metalized polyester film is suitable for adjusting electric characteristics of overvoltage resistance, pulse, dv/dt, etc. of the capacitor. Furthermore the specification of the metalized film is controllable and the technical deviation is controllable. Performance stability of the finished capacitor 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 two-sided intermediately remained border aluminum metallization polyester film.
Above-mentioned purpose of the present utility model, to be achieved by the following technical programs: two-sided intermediately remained border aluminum metallization polyester film, inner core film material as capacitor, it is characterized in that: described film consists of the aluminium film of polyester base film and upper and lower surperficial one plating thereof, and polyester base film is respectively equipped with intermediately remained border on the upper and lower surface at Width middle part and separates two sections of aluminium films, and the width sum of described intermediately remained border and both sides aluminium film thereof equates with the width of polyester base film.
Further, the width of described intermediately remained border be less than polyester base film width 1/3rd.
Apply polyester film of the present utility model, its technological merit shows as: this polyester film adopts aluminium as the film material of metal-integral, and adopt two-sided intermediately remained border to be stacked to constitute two string data structures in conjunction with auxiliary polyester base film, 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 metallized film are controlled, improved capacitor end properties stability.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of the two-sided intermediately remained border aluminum metallization of the utility model 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 of the utility model one preferred embodiment.From illustrating visible this film, by the aluminium film 22 of polyester base film 11 and upper and lower surperficial one plating thereof, formed, and polyester base film 11 is respectively equipped with intermediately remained border 31 on the upper and lower surface at Width middle part and separates two sections of aluminium films 22, and this intermediately remained border 31 and the width sum of intermediately remained border both sides aluminium film 22 and the width A of polyester base film equate.Especially, the width B of this intermediately remained border 31 be less than polyester base film 11 width A 1/3rd, the width B that even can meet intermediately remained border 31 according to specification requirement be less than polyester base film 11 width A 1/15th.
It should be noted that, in above-mentioned two-sided intermediately remained border aluminum metallization polyester film, polyester base film is Korea S SKC SC42 type PET basement membrane for example.
Above-mentioned intermediately remained border 31 is intended to ensure between the film that capacitor reels certain dielectric strength.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 22 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.
From the different size of product, the specifications parameter of this film is as follows: conventional thickness is between 1.5 μ m-11.8 μ m; The width A of polyester base film is between 7.5mm-54mm, and the width B of intermediately remained border is between 2mm-5mm; Its sheet resistance is between 1-2 Ω/, and deviation range is ± 30%.
When this polyester film is applied to capacitor production, need be combined with not metal lining and the less auxiliary polyester base film sandwiched of width and be stacked and form two string data capacitance structures, and make auxiliary polyester base film relatively be recessed shape in the edge of this two-sided intermediately remained border aluminum metallization polyester film.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.In addition, also can stay aluminum metallization polyester film in limit to participate in around the ready-made two string data capacitance structures of volume outward in conjunction with one side.
By above-mentioned character express, can find out, advantage of the present utility model is remarkable: this polyester film adopts aluminium as the film material of metal-integral, and adopt two-sided intermediately remained border to be stacked to constitute two string data structures in conjunction with auxiliary polyester base film, 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 metallized 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 (2)
1. two-sided intermediately remained border aluminum metallization polyester film, inner core film material as capacitor, it is characterized in that: described polyester film consists of the aluminium film of polyester base film and upper and lower surperficial one plating thereof, and polyester base film is respectively equipped with intermediately remained border on the upper and lower surface at Width middle part and separates two sections of aluminium films, and the width sum of described intermediately remained border and both sides aluminium film thereof equates with the width of polyester base film.
2. two-sided intermediately remained border aluminum metallization polyester film according to claim 1, is characterized in that: the width of described intermediately remained border be less than polyester base film width 1/3rd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320519464.4U CN203456296U (en) | 2013-08-23 | 2013-08-23 | Double-surface aluminum-metalized polyester film with middle edges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320519464.4U CN203456296U (en) | 2013-08-23 | 2013-08-23 | Double-surface aluminum-metalized polyester film with middle edges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456296U true CN203456296U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320519464.4U Expired - Lifetime CN203456296U (en) | 2013-08-23 | 2013-08-23 | Double-surface aluminum-metalized polyester film with middle edges |
Country Status (1)
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| CN (1) | CN203456296U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128760A (en) * | 2016-08-11 | 2016-11-16 | 苏州柯创电子材料有限公司 | Metallized film capacitor based on PET |
| CN106128759A (en) * | 2016-08-11 | 2016-11-16 | 苏州柯创电子材料有限公司 | The manufacture method of metallized film capacitor |
| CN106158374A (en) * | 2016-08-11 | 2016-11-23 | 苏州柯创电子材料有限公司 | metallized film capacitor |
| CN106252075A (en) * | 2016-08-11 | 2016-12-21 | 苏州柯创电子材料有限公司 | The manufacturing process of metallized film capacitor |
-
2013
- 2013-08-23 CN CN201320519464.4U patent/CN203456296U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128760A (en) * | 2016-08-11 | 2016-11-16 | 苏州柯创电子材料有限公司 | Metallized film capacitor based on PET |
| CN106128759A (en) * | 2016-08-11 | 2016-11-16 | 苏州柯创电子材料有限公司 | The manufacture method of metallized film capacitor |
| CN106158374A (en) * | 2016-08-11 | 2016-11-23 | 苏州柯创电子材料有限公司 | metallized film capacitor |
| CN106252075A (en) * | 2016-08-11 | 2016-12-21 | 苏州柯创电子材料有限公司 | The manufacturing process of metallized film capacitor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |
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| CX01 | Expiry of patent term |