Films having in their thickness at least two superimposed zones,

Details Films having in their thickness at least two superimposed zones, Films having in their thickness at least two superimposed zones,

1990-12-14

1992-05-05

Buffalow, E. Rollins

Stock material or miscellaneous articles

Composite

Of fluorinated addition polymer from unsaturated monomers

428422, 4284247, 428458, 428461, 4284747, 4284735, 428483, 428447, B32B 2700

Patent

active

051106833

ABSTRACT:
The invention relates to the production of films having in their thickness at least two superimposed zones, including a semimetallic zone and an electrically insulating zone, by irradiating a polymer film by means of a high energy ion beam.
It is possible by this process to produce semimetal (1)/insulant (2)/semimetal (3) structures by irradiating the polymer under vacuum by means of light ions or with a limited stopping power having an energy of at least 1 MeV/amu. It is also possible to obtain insulant (4)/semimetal (5)/insulant (6) structures by irradiating, in a confined atmosphere, the polymer by means of heavy ions or ions having a high energy loss with an energy of at least 1 MeV/amu.
By irradiating only certain zones of the film, it is thus possible to form embedded or surface-positioned electrical connections.

REFERENCES:
patent: 4199650 (1980-04-01), Mirtich
patent: 4677017 (1987-06-01), DeAntonis et al.
patent: 4743493 (1988-05-01), Sioshanji et al.

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