公开(公告)号：EP1240000B1

公开(公告)日：2004-02-04

申请号：EP00980753.8

申请日：2000-11-21

申请人： 3M Innovative Properties Company

发明人： DENKER, Martin, E. ,  BARTUSIAK, Joseph, T. ,  FERGUSON, Anthony, B. ,  HANSCHEN, Thomas, P. ,  JACKSON, Jeffrey, N. ,  MERRILL, William, W. ,  NEWHOUSE, Susan, J. ,  ROSKA, Fred, J. ,  THOMPSON, Richard, J. ,  WONG, Chiu, Ping

IPC分类号： B29C55/16

CPC分类号： B29C55/165

摘要： A method of stretching films in which all or a portion of the width of the film is cooled during or just after stretching so as to improve the uniformity of the film. The method includes stretching a polymeric film (26) in a tenter (10) that grasps the film with a plurality of clips (22, 24) along the opposing edges of the film (26) and propels the clips (22, 24) to thereby stretch the film. The tenter (10) includes driven clips (22) and idler clips (24), with at least one idler clip (24) between respective pairs of driven clips (22). The cooling is done so as to improve the uniformity of the clip spacing relative to the spacing obtained at otherwise identical process conditions without such cooling.

公开(公告)号：EP2265981A1

公开(公告)日：2010-12-29

申请号：EP09727097.9

申请日：2009-03-30

申请人： 3M Innovative Properties Company

发明人： BÖSL, Ellen, R. ,  CHIEN, Bert, T. ,  FRANKE, Carsten ,  HART, Shandon, D. ,  HEDDING, Brent, A. ,  KARG, Donovan, C., Jr. ,  LUDEMANN, Thomas, J. ,  NOONEY, Meghan, A. ,  O'NEILL, Mark, B. ,  PETERSON, Jeffrey, A. ,  STROBEL, Joan, M. ,  TAI, Huiwen, ,  VAN DERLOFSKE, John, F. III ,  WEBER, Michael, F. ,  WONG, Chiu, Ping ,  POKORNY, Richard, J. ,  BAETZOLD, John, P.

IPC分类号： G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/13357

CPC分类号： G02B5/3083 ,  G02B5/3033 ,  G02F1/133536 ,  G02F1/133606 ,  G02F1/13362 ,  G02F1/133634 ,  G02F2001/133531 ,  G02F2001/133543 ,  G02F2413/12 ,  Y02P20/582

摘要： An optical film that includes a reflective polarizer and a stretched polymer film is disclosed. The stretched polymer film is laminated to the reflective polarizer, and the stretched polymer film exhibits a refractive index symmetry point at an angle of incidence in air of at least about 60 degrees in a plane of incidence parallel to a direction of greatest stretch.

摘要翻译： 公开了一种包括反射偏振器和拉伸聚合物膜的光学膜。 拉伸的聚合物膜被层压到反射偏振器上，并且拉伸的聚合物膜在平行于最大拉伸方向的入射平面中在空气中的入射角呈现至少约60度的折射率对称点。

公开(公告)号：EP1240000A1

公开(公告)日：2002-09-18

申请号：EP00980753.8

申请日：2000-11-21

申请人： 3M Innovative Properties Company

发明人： DENKER, Martin, E. ,  BARTUSIAK, Joseph, T. ,  FERGUSON, Anthony, B. ,  HANSCHEN, Thomas, P. ,  JACKSON, Jeffrey, N. ,  MERRILL, William, W. ,  NEWHOUSE, Susan, J. ,  ROSKA, Fred, J. ,  THOMPSON, Richard, J. ,  WONG, Chiu, Ping

IPC分类号： B29C55/16

CPC分类号： B29C55/165

摘要： A method of stretching films in which all or a portion of the width of the film is cooled during or just after stretching so as to improve the uniformity of the film. The method includes stretching a polymeric film (26) in a tenter (10) that grasps the film with a plurality of clips (22, 24) along the opposing edges of the film (26) and propels the clips (22, 24) to thereby stretch the film. The tenter (10) includes driven clips (22) and idler clips (24), with at least one idler clip (24) between respective pairs of driven clips (22). The cooling is done so as to improve the uniformity of the clip spacing relative to the spacing obtained at otherwise identical process conditions without such cooling.