Perforated film constructions for backlit signs
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United States of America Patent
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Jul 27, 2004
Issued Date -
N/A
app pub date -
Apr 16, 2001
filing date -
Sep 15, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides perforated film constructions, sign faces including the film constructions, and signs including the sign faces, all of which are capable of having one appearance under light ambient lighting conditions, and another appearance when backlit under dark ambient lighting conditions. The construction is generally planar and includes perforations that occupy, e.g., about 10-35% of the major surfaces of the construction. The perforations are separated by an opaque land area. The back surface of the film construction in the land area (i.e., the surface that is adapted to face the interior of the sign) reflects, e.g., at least about 50% of normal light incident thereon.
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