http://www.springerlink.com/content/kgwn7n442v57u30q/

Here is an Soviet Ukranian Research Article from 1977. Its not a link for full article but first page but very interesting.
They are writing about printing technology problems and etching the polyester film for better adhesion .
I dont know its use but may be Photo Engineer can have a look at it. You can open the preview page with Acrobat.

Umut