Composite polymeric film and method of its use in installing...

Details Composite polymeric film and method of its use in installing... Composite polymeric film and method of its use in installing...

B - Operations, Transporting

32

B

154/140

B32B 27/30 (2006.01) C08J 5/18 (2006.01) C08J 7/04 (2006.01)

Patent

CA 1212613

COMPOSITE POLYMERIC FILM AND METHOD OF ITS USE IN INSTALLING A VERY THIN POLYMERIC FILM IN A DEVICE ABSTRACT OF THE DISCLOSURE A composite polymeric film and a method for its use in forming and installing a very thin (< 10 µm) polymeric film are disclosed. The composite film consists of a thin film layer and a backing layer. The backing layer is sol- uble in a solvent in which the thin film layer is not sol- uble. In accordance with the method, the composite film is installed in a device in the same position in which it is sought to finally emplace the thin film. The backing layer is then selectively dissolved in the solvent to leave the insoluble thin film layer as an unbacked film. The method permits a very thin film to be successfully installed in devices where the fragility of the film would preclude handling and installation by conventional methods.

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