Method for making plastic film with barrier layers

Details Method for making plastic film with barrier layers Method for making plastic film with barrier layers

1997-09-22

1999-05-04

Pianalto, Bernard

Coating processes

Measuring, testing, or indicating

427250, 4272553, 4272557, 427537, 427539, 427576, C23C 1600

Patent

active

059002719

ABSTRACT:
A plastic wrapping film is provided with one or more aluminum layers by vapor deposition and the or each layer is only partially oxidized in an oxidizing plasma so that the resulting barrier layer is distinguishable by slight reduction in transparency but excellent prevention of penetration by moisture and oxygen.

REFERENCES:
patent: 4197337 (1980-04-01), Di Biasi et al.
Vol. 9, No. 222 (C-302) (1945)-Sep. 9, 1985 Formation of Oxide Layer.

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