Flexible, transparent film for electrostatic shielding
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United States of America Patent
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May 24, 1994
Grant Date -
N/A
app pub date -
Jun 28, 1991
filing date -
Jun 28, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A film providing electrostatic shielding comprises a first layer of a carrier material and a second layer of a thermoplastic, polymeric material, both layers being electrically insulative, flexible and transparent, and there further being a plurality of thin, conductive slivers suspended in the second layer. The slivers form an essentially two-dimensional, conductive network which is suspended in the second layer, and may be present in an amount as little as 2 g/m.sup.2. The slivers have a melting temperature greater than the melting temperature of the polymeric material, and the polymeric material has a melting temperature lower than that of the carrier material. The film passes at least 70% of visible light.
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