Mfg. method of double-sided metallization film and metallization film capacitor using same

A technology of metallized film and manufacturing method, which is applied in the direction of capacitors, capacitor manufacturing, and wire-wound capacitors, and can solve problems such as tan delta deterioration, reduced withstand voltage, and weak adhesion
CN1463450AInactive Publication Date: 2003-12-24PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2003-12-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of manufacturing a double surface metallized insulation film, characterized by comprising the steps of spraying oxidation gas on an inner surface side deposited film on the insulation film wound on a product roll in a process for vacuum-depositing zinc or the mixture of zinc and aluminum on both surfaces of the insulation film and winding the insulation film on the product roll, forming an oil film on at least one surface and exposing at least one side deposited film to the atmosphere containing oxygen in a depositing process, or spraying the gas containing oxygen on at least one deposited film to form an oxidized film in the process for winding on the product roll. According to the present invention, a blocking that the deposited films on both surfaces are adhered to each other and separated from each other in the product roll can be eliminated.
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Description

technical field

[0001] The present invention relates to a double-sided metallized film used in capacitors, and more particularly to a method of manufacturing a double-sided metallized film and a capacitor using the same. Background technique

[0002] Capacitors made of plastic films on which metal has been vapor-deposited (hereinafter simply referred to as metallized film capacitors) have long been widely used. Among them, metallized capacitors made of polypropylene (hereinafter referred to as PP) film have been widely used in the From typical small electronic components of portable instruments to automotive drive motor control and high voltage input and other large-scale industrial applications.

[0003] Figure 8 This is a cross-sectional view of a conventional metallized film capacitor using a PP film. A capacitor is formed by winding or laminating two PP films 42 with metal 41 vapor-deposited on one side, and metallized parts 34 sprayed with metal from both end surface...

Claims

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