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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

Inactive Publication Date: 2003-12-24
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In particular, when PP film is used as a film, compared with other films, its adhesion to vapor-deposited metal is weak, and this will generate moisture to make the vapor-deposited metal on the surface and inside adhere to each other, and it is easy to remove from the film. The problem of peeling on the membrane
[0017] When making a capacitor with such a clogged double-sided metallized film, there are also cases where the withstand voltage is reduced due to wrinkles during slitting and winding, or due to peeling of the deposited film and oxidation and hydrogen oxidation reactions of the deposited metal. Problems leading to increase in electrode resistance and deterioration of tanδ

Method used

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

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Embodiment 1

[0033] Refer below figure 1 , figure 2 and Figure 11 An example in which a PP film is used as an insulating film in Embodiment 1 of the present invention will be described.

[0034] figure 1 In the process, the PP film 4 is rolled up with the raw material roll 2 installed inside the coating machine 1, and the inlet-side vapor deposition is formed on one side of the PP film 4 by the inlet-side aluminum evaporation source 6a and the zinc evaporation source 7a in the inlet-side cooling tank 5a. Metal. Next, an output-side vapor-deposited metal is formed on the reverse surface of the PP film 4 by the output-side aluminum evaporation source 6 b and the zinc evaporation source 7 b in the output-side cooling tank 5 b. In addition, in order to prevent the gas and moisture adsorbed on the PP film 4 in the raw material roll 2 from causing the vacuum near the evaporation sources 5a, 5b, 6a, and 6b to deteriorate, a partition 16 is provided to separate the evaporation chamber. . ...

Embodiment 1-2

[0042] Embodiment 1-2: vapor-deposit the mixture of zinc and aluminum on both sides of PP film 4, according to figure 1 The method shown blows air and rolls into a product roll 3 .

Embodiment 1-3

[0043] Embodiment 1-3: vapor-deposit the mixture of zinc and aluminum on both sides of PP film 4, according to figure 1 The process shown blows oxygen and rolls into a product roll 3 .

[0044] Next, after the product roll 3 is taken out from the coating machine, samples are taken while rolling up the vapor-deposited PP film 32 on both sides of the outermost peripheral part and the innermost peripheral part of the product roll 3, and the deposited film is observed with a 50-fold transmission microscope. The peeling condition of the metal 31 was taken and photographed. The photograph was digitally processed with a computer, and the percentage of the peeled portion of the vapor-deposited metal 31 was obtained by binarizing the peeled and non-peeled portions of the vapor-deposited metal 31 . In addition, for the sake of comparison, the following samples were produced using the double-sided vapor-deposited PP film of the prior art, and the peeling ratio was determined.

[0045]...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/08C23C14/56C23C14/58H01G4/32H01G13/00
CPCH01G4/32C23C14/5853H01G13/006C23C14/08C23C14/562Y10T29/49117Y10T29/435
Inventor 塩田浩平齐藤俊晴纳村和美竹冈宏树中坪和弘西森敏幸渋谷正俊佐佐木敏宏冈部繁雄
Owner PANASONIC CORP
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