Metallized film and metallized film capacitor using same

Patent metadata

Field	Value
Publication number	US-9502179-B2
Application number	US-201214009527-A
Country	US
Kind code	B2
Filing date	May 22, 2012
Priority date	May 31, 2011
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A metallized film composed of a dielectric film, a metal thin film layer and a dielectric layer, the metal thin film layer being formed on at least one surface of the dielectric film, the dielectric layer being formed on the metal thin film layer, and the dielectric layer being composed of acrylic acid ester resin as a main component being composed of dimethylol tricyclodecane diacrylate and monoacrylate containing a heterocycle.

First claim

The invention claimed is:

1. A metallized film comprising:
a dielectric film;
a metal thin film layer formed on at least one surface of the dielectric film; and
a dielectric layer formed on the metal thin film layer,
wherein the dielectric layer is chiefly made of acrylic acid ester resin that includes dimethylol tricyclodecane diacrylate and monoacrylate containing a heterocycle.

2. The metallized film according to claim 1 ,
wherein the monoacrylate containing a heterocycle is tetrahydrofurfuryl acrylate.

3. The metallized film according to claim 2 ,
wherein a weight ratio of the dimethylol tricyclodecane diacrylate to a sum of the dimethylol tricyclodecane diacrylate and the tetrahydrofurfuryl acrylate contained in the acrylic acid ester resin is within a range of at least 0.7 and at most 0.9, inclusive.

4. The metallized film according to claim 1 ,
wherein the dielectric film is made of one of polypropylene resin, polyethylene terephthalate resin, polyethylene naphthalate resin and polyphenylene sulfide.

5. A metalized film capacitor comprising:
a wound body formed by winding the metallized film according to claim 1 ; and
metallikon electrodes formed on both end faces of the wound body in an axial direction of the winding, respectively,
wherein the metallized film further includes a metal layer formed on an opposite surface of the dielectric film to a surface on which the metal thin film layer is formed.

6. The metallized film capacitor according to claim 5 ,
wherein a cross section of the wound body perpendicular to the axial direction of the winding has an oblate shape.

7. The metallized film capacitor according to claim 5 ,
wherein the monoacrylate containing the heterocycle is tetrahydrofurfuryl acrylate.

8. The metallized film capacitor according to claim 5 ,
wherein the metallikon electrodes are formed by metal spray.

Assignees

• Ohchi Yukikazu
• Panasonic Ip Man Co Ltd

Inventors

• Ohchi Yukikazu

Classifications

• Y10T428/31699

  Ester, halide or nitrile of addition polymer · CPC title

• H01G4/32

  Wound capacitors · CPC title

• H01G4/015 Primary

  Special provisions for self-healing · CPC title

• H01G4/18

  of synthetic material, e.g. derivatives of cellulose (H01G4/16 takes precedence) · CPC title

• Y02T10/7022

  Cross-Sectional Technologies · mapped topic