Process for manufacturing ultrathin polymer membranes and produc

Details Process for manufacturing ultrathin polymer membranes and produc Process for manufacturing ultrathin polymer membranes and produc

1974-03-27

1976-01-20

Van Balen, William J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156247, 156249, 264212, 264298, 428304, B32B 3100

Patent

active

039335615

ABSTRACT:
Unsupported ultrathin polymer film is made in bulk form by floating the film on a bath, transferring the floating film to a release substrate, drying the resulting film/substrate composite, separating the film from the substrate, and retrieving the unsupported film, e.g. in the form of a convoluted roll provided with anti-blocking agent in between the convolutions. The bulk product can be made into thermal insulating material, flake-like weather modifying agents, etc.

REFERENCES:
patent: 3073733 (1963-01-01), Mitchell
patent: 3551244 (1970-12-01), Forester et al.
patent: 3650880 (1972-03-01), Tieniber
patent: 3687772 (1972-08-01), Klenk et al.
patent: 3810814 (1974-05-01), Herrick et al.
patent: 3843436 (1974-10-01), Yanagida et al.

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