Protective sheet material and method for making same
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United States of America Patent
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Jul 30, 1996
Grant Date -
N/A
app pub date -
Mar 10, 1995
filing date -
Mar 10, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A protective sheet material of a laminate structure and a method of manufacture in which the sheet material has a plastic membrane layer joined to a layer of felt. Subsequent to the joining of the felt to the plastic membrane, the felt is saturated with petroleum wax including plasticizers and corrosion inhibitors. A second layer of felt can be joined to the opposite side of the plastic film to provide a sandwich of a plastic membrane between two layers of saturated felt. When this sheet material has been applied in an overlapping manner, there is a felt-to-felt seal at the overlap. The plastic and felt can be joined by heat fusion or by adhesives.
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