Enhancement of electromagnetic barrier properties
OwnerKirit Patel, John R. Pennaceinventors
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Abstract
A structure exhibiting enhanced barrier properties is disclosed and which comprises: a substrate, a metallic coating formed by vaporization and condensation upon said substrate, said metallic coating having a thickness of about 400A, and a plurality of sets of embossed patterns upon said coating, said plurality of sets of embossed patterns each having a line density between 100 and 50,000 lines per square centimeter, and method of making the structure.
Claims18
The method of altering the properties of a structure which comprises the steps of:
- (a) providing a substrate,
- (b) applying a surface layer upon said substrate, said surface layer being a metallic coating applied by vacuum metalization and being about 400.ANG. in thickness, and
- (c) modifying said surface layer by microembossing said surface layer with a plurality of sets of patterns, said plurality of sets of microembossed patterns each having a line density between about 100 and 50,000 lines per square centimeter, in order to increase the barrier properties of said structure.
A structure which comprises:
- a substrate,
- a metallic layer deposited upon said substrate by vacuum metalization, said metallic layer having a thickness of about 400.ANG., and a plurality of sets of patterns microembossed upon the surface of said layer for increasing the barrier properties of said structure, said plurality of sets of microembossed patterns each having a line density between about 100 and 50,000 lines per square centimeter.
A structure exhibiting enhanced barrier properties which comprises:
- a substrate,
- a metallic coating formed by vaporization and condensation upon said substrate, said metallic coating having a thickness of about 400.ANG., and
- a plurality of sets of embossed patterns upon said coating, said plurality of sets of embossed patterns each having a line density between 100 and 50,000 lines per square centimeter, whereby the embossment of said coating enhances the barrier properties of said structure.
A method of enhancing the barrier properties of a substrate which comprises the steps of
- (a) applying a surface metallic coating by vaporization and condensation to said substrate, said metallic coating having a thickness of about 400.ANG.;
- and
- (b) modifying the surface of said coating by providing a plurality of sets of microembossed patterns on said coating, said plurality of sets of microembossed patterns having a line density between 100 and 50,000 lines per square centimeter, in order to increase the degree of reflectance of incident electromagnetic energy of falling upon said coating;
- thereby to reduce the penetration of said substrate by the incident electromagnetic energy.
Dependencies are inferred from the claim text.