3M Innovative Properties Company

Desiree L Thompson

William Ward Merrill

Andrew T Ruff

Jeffery N Jackson

John Allen Wheatley

Curtis A Harvey

Jeffrey D Amundson

Dennis L Krueger

Jeffrey N Jackson

Jeffrery N Jackson

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. Methods and stretching apparatuses can include adjustable or zone-defined stretching regions.

Devices for stretching polymer films

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.

Apparatus for making transversely drawn films with substantially uniaxial character

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 configuration of the take-away system can, in at least some instances, influence final film properties.

Devices for conveying, stretching, and taking-away polymer films

Methods and devices for stretching polymer films

Methods and devices for processing polymer films

Processes and apparatus for making transversely drawn films with substantially uniaxial character

Growing community of inventors

Prescott, WI, United States of America

Desiree L Thompson