Metallized film and metallized film capacitor using same

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.