Title:
高分子光学フィルムの製造方法
Document Type and Number:
Japanese Patent JP2006517486
Kind Code:
A
Abstract:
A process for making an optical film includes stretching a polyolefin film in a first direction and stretching the polyolefin film in a second direction different than the first direction forming a biaxially stretched polyolefin film. At least a portion of the stretching of the polyolefin film in the second direction occurs simultaneous with the stretching of the polyolefin film in the first direction. The biaxially stretched polyolefin film has a length and a width and substantially non-absorbing and non-scattering for at least one polarization state of visible light. The biaxially stretched polyolefin film has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal, an in-plane retardance being 100 nm or less and an out-of-plane retardance being 50 nm or greater.
Inventors:
Allen, Richard C.
Johnson, Matthew Bee.
Rosca, Fred Jay.
Linner, Stephen Jay.
Merrill, William W.
Strobel, Joan M.
Hummer, Kevin M.
Kraser, John M.
Zeentmeier, Sebastian F.
Johnson, Matthew Bee.
Rosca, Fred Jay.
Linner, Stephen Jay.
Merrill, William W.
Strobel, Joan M.
Hummer, Kevin M.
Kraser, John M.
Zeentmeier, Sebastian F.
Application Number:
JP2006503138A
Publication Date:
July 27, 2006
Filing Date:
January 29, 2004
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES COMPANY
International Classes:
B29C55/12; B29C55/16; G02B5/30; B29K23/00; B29L11/00
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Kenichi Kato
Masaya Nishiyama
Takashi Ishida
Tetsuji Koga
Kenichi Kato
Masaya Nishiyama