07271951 is referenced by 130 patents and cites 56 patents.

New constructions of multilayer optical films, laminates thereof, and cards incorporating same are disclosed. In a card, the multilayer optical film can be sandwiched between relatively thick polymer layers using adhesive layers that are at least 0.5 mils thick but that may collectively account for no more than 3 mils of thickness. The cards can if desired be highly transmissive in the visible yet highly opaque in portions of the infrared. The resulting cards can have reduced angel hair formation during card stamping, increased resistance to delamination, and reduced haze.

Title
Cards and laminates incorporating multilayer optical films
Application Number
11/132114
Publication Number
7271951 (B2)
Application Date
May 18, 2005
Publication Date
September 18, 2007
Inventor
David K Mortenson
White Bear Lake
MN, US
Diane North
Inver Grove Heights
MN, US
Michael F Weber
Shoreview
MN, US
Agent
William D Miller
Assignee
3M Innovative Properties Company
MN, US
IPC
G02B 5/28
G06K 19/02
B42D 15/00
G02B 5/20
G02B 5/08
F21V 9/06
F21V 9/04
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