Title:
光制御フィルム、積層光制御フィルム、光制御フィルムの製造方法、および積層光制御フィルムの製造方法
Document Type and Number:
Japanese Patent JP4851342
Kind Code:
B2
Abstract:
Linear notch patterns at fixed intervals are formed by contacting blades 6a on a drum 6 with a film F and mechanically transferring the shape of the blades 6a to the film F. The notch pattern is formed to be approximately parallel to the axial direction of the drum 6. When a flexural stress is applied in the direction of the film F transport by passing the film over the bending roll 8 while applying a predetermined tension thereto, crazes or cracks are formed inside the notch patterns, with the notches in the notch patterns serving as starting points thereof. Since crazes or cracks are formed using the notch patterns as starting points, relatively large crazes or cracks can be obtained, and optical characteristics can be controlled at a high level.
Inventors:
Yoshihiro Uozu
Jun Nakauchi
Toda Masatoshi
Tetsuya Sawano
Hiroki Hatakeyama
Jun Nakauchi
Toda Masatoshi
Tetsuya Sawano
Hiroki Hatakeyama
Application Number:
JP2006545346A
Publication Date:
January 11, 2012
Filing Date:
October 19, 2006
Export Citation:
Assignee:
Mitsubishi Rayon Co., Ltd.
International Classes:
G02B5/02; B29C59/04; G02B5/00; B29L11/00
Domestic Patent References:
| JPH1164609A | 1999-03-05 | |||
| JPH11231108A | 1999-08-27 | |||
| JPH09166702A | 1997-06-24 | |||
| JPH09281306A | 1997-10-31 | |||
| JP2002258010A | 2002-09-11 | |||
| JPH07146403A | 1995-06-06 |
Attorney, Agent or Firm:
Sadao Kumakura
Fumiaki Otsuka
Shishido Kaichi
Disciple Maru Ken
Ino Sato
Hiroko Suzuki
Fumiaki Otsuka
Shishido Kaichi
Disciple Maru Ken
Ino Sato
Hiroko Suzuki