Conforming a microporous sheet to a solid surface
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United States of America Patent
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May 2, 1995
Issued Date -
N/A
app pub date -
Jun 5, 1992
filing date -
Aug 28, 1989
priority date (Note) -
Expired
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Abstract
Conformable marking sheet comprising a microporous thermoplastic polymer base sheet having a network of interconnected pores. The marking sheet has a low yield stress, making it conformable to rough surfaces. The pores of the base sheet can be filled with a diluent (wax) or they may have the diluent removed, for example by extraction. The construction may further comprise an adhesive on the bottom and a top marking indicium layer comprising a polymeric binder in which is partially embedded a multiplicity of retroflective lens elements, e.g., transparent microspheres.
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