Stretched polymeric films can be used in a variety of applications, including optical applications. The stretching conditions and shape of the stretching tracks in a stretching apparatus can determine or influence film properties. Take-away systems can be used to receive the film after stretching. The...http://www.google.es/patents/US7153123?utm_source=gb-gplus-sharePatente US7153123 - Devices for conveying, stretching, and taking-away polymer films
Devices for conveying, stretching, and taking-away polymer films
