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Published in:
2014 | OriginalPaper | Chapter
Biaxial Oriented Film Technology
Author : J. Breil
Published in: Film Processing Advances
Publisher: Carl Hanser Verlag GmbH & Co. KG
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The stretching of films constitutes a finishing process in which the mechanical properties, optical characteristics, and barrier properties are increased significantly. The improvements of the properties result from the orientation of the molecular chains due to the stretching as well as from the increase in the degree of crystallinity in the case of semicrystalline plastics.