Title:
二軸配向ポリエステルフィルム
Document Type and Number:
Japanese Patent JP7456203
Kind Code:
B2
Abstract:
To stably provide a biaxially oriented polyester film that is excellent in runnability and windability and further excellent in dimensional stability and when used as a magnetic recording medium, serves as a high-density magnetic recording medium having a smooth magnetic layer with a small dimensional change due to environmental change of temperature and humidity or due to storage and having less occurrence frequency of missing pulse.SOLUTION: The biaxially oriented polyester film is such that on at least one outermost layer surface of the biaxially oriented polyester film, projections whose cut end at a height of 60 nm has an area of 1 μm2 or more are 50/mm2 or less in number and the number of projections having a height of 30 nm or more is 15,000 to 200,000/mm2.SELECTED DRAWING: None
Inventors:
Nakamori Yukari
Takuji Higashioji
Toshihiro Chiyo
Takuji Higashioji
Toshihiro Chiyo
Application Number:
JP2020040579A
Publication Date:
March 27, 2024
Filing Date:
March 10, 2020
Export Citation:
Assignee:
Toray Industries, Inc.
International Classes:
B29C55/12; C08J5/18; G11B5/73; G11B5/84
Domestic Patent References:
| JP2017200761A | ||||
| JP2014019138A | ||||
| JP2015039801A | ||||
| JP2001226502A | ||||
| JP2013200927A | ||||
| JP2011034647A |