BIAXIALLY ORIENTED POLYPROPYLENE FILM FOR CAPACITOR, POLYPROPYLENE FILM FOR METAL LAYER INTEGRATED CAPACITOR, FILM CAPACITOR AND FILM ROLL

Title:

BIAXIALLY ORIENTED POLYPROPYLENE FILM FOR CAPACITOR, POLYPROPYLENE FILM FOR METAL LAYER INTEGRATED CAPACITOR, FILM CAPACITOR AND FILM ROLL

Document Type and Number:

Japanese Patent JP2023002364

Kind Code:

A

Abstract:

To provide a biaxially oriented polypropylene film for capacitors, having high voltage resistance at high temperature and excellent in stretchability and element processability.SOLUTION: In a biaxially oriented polypropylene film for capacitors, at least two or more melting peaks are observed when differential scanning calorimetry (DSC) is performed on the condition of a heating rate of 30°C/min; the ratio of the total amount of heat of fusion formed by sub-peaks on the side of a temperature lower than that of the main peak of the melting peak to the total amount (100%) of the heat of fusion is in a range of 60% or more and 70% or less; and the ratio of the amount of heat of fusion of 150°C or less to the total amount (100%) of heat of fusion is in a range of 12% or more and 20% or less.SELECTED DRAWING: None

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Inventors:

SUEASHI MICHIKO
TOMINAGA TAKASHI
ISHIWATARI TADAKAZU

Application Number:

JP2021103561A

Publication Date:

January 10, 2023

Filing Date:

June 22, 2021

Export Citation:

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Assignee:

OJI HOLDINGS CORP

International Classes:

C08J5/18; H01G4/32

Attorney, Agent or Firm:

Junya Tanaka
Kaguya Mizutani

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