" PROCESSES AND APPARATUS FOR MAKING TRANSVERSELY DRAWN FILMS WITH SUBSTANTIALLY UNIAXIAL CHARACTERPHARMACEUTICAL COMPOSITION"
Application 1872/CHENP/2003 published 2006-01-06, filed 2003-11-28
A process for stretching films is described. The process preferably stretches films in a uniaxial fashion. Preferably, optical films are stretched including multilayer optical films. Other aspects of the invention include a roll of stretched film and an apparatus for stretching films.
Applicant
3M INNOVATIVE PROPERTIES COMPANY
3M Center, Post Office Box 33427, Saint Paul, MN 55133-3427, USA
Inventor
International Info
Classification: B29C 55/00
Publication Number: PCT/US02/17148
Priority Information
60/294,940 USA 2001-05-31