Matsushita Electric Industrial Co., Ltd.

Shigeo Okabe

Toshiyuki Nishimori

Hidekazu Wada

Shigeo Okuno

Nobuji Suzuki

Masahiro Kawai

Hiroki Takeoka

Toshiharu Saito

Kohei Shiota

Toshihiro Sasaki

Kazuhiro Nakatsubo

Kazumi Osamura

Masatoshi Shibuya

A method of manufacturing a both-side metallized insulation film comprises steps of: depositing zinc or a blend of zinc and aluminum onto both sides of an insulation film; and winding this metallized film into a product roll. The method is characterized in spraying an oxidizing gas onto a deposited layer on an inner side of the insulation film to be wound, during the winding step. During a vacuum deposition step, an oil layer is formed on at least one side of the metallized film. In addition, an oxide layer is formed by exposing a deposited layer on at least one side to oxygen, or by spraying an oxygen-containing gas onto the deposited layer on at least one side during the winding of the metallized film into the product roll.

Method of manufacturing both-side metallized film with reduced blocking of metallized film and metallized film capacitor using the same

A metallized film capacitor is made by winding or laminating a both-side metallized polypropylene (PP) film and a non-metallized PP film. Limiting the heat shrinkage factor and the thickness of the PP films, the position of deposited electrodes, and the rate of the peeled area of the deposited electrodes to a certain range provides a metallized film capacitor having improved dieletric strength, tan &#x3b4;, and charge-discharge characteristics.

Metallized film capacitor

A metallized film capacitor formed by laminating or winding a metallized film 1 with metal evaporated electrode on one or both sides thereof so that a pair of metal evaporated electrodes 2 are opposite to each other, wherein electrode lead-out portions 3 are provided at both ends of the capacitor, each metal evaporated electrode is composed of a low resistance area abutting on the electrode lead-out portion and a remaining high resistance area having higher resistance than it, a split electrode pattern with a plurality of minute blocks 8 formed in a longitudinal direction and width direction and fusing areas 9 between the adjacent minute blocks is formed on at least one of the metal evaporated electrodes, and electrode partitioning lines 7 are formed at regular intervals in a longitudinal direction of the film. The metallized film is fabricated by depositing substance such as oil for preventing evaporation of metal on the evaporation side of a plastic film 10 through a rotary screen cylinder with any pattern formed by mesh processing and immediately thereafter depositing evaporated metal, thereby forming a split fuse pattern serving as a safeguard mechanism during high speed evaporation.

Device for fabricating a metalized film capacitor

A metallized film capacitor formed from a pair of metallized films. Each of the metallized films includes a dielectric film with a metal evaporated electrode formed thereon. One electrode has longitudinal electrode partitioning lines and a plurality of small blocks separated by fuse areas, while the other electrode does not. Each metallized film is formed by moving the film over a screen cylinder having a side wall with openings formed therein. A nozzle is disposed inside the screen cylinder, adjacent to the side wall. Oil is ejected from the nozzle, while the screen cylinder is rotated. The oil passes through the side wall and is deposited on the film to form a pattern thereon. Subsequently, evaporated metal is deposited on the film.

Method for fabricating a metalized film

Growing community of inventors

Toyama, Japan

Shigeo Okabe