Treatment of rock surfaces
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United States of America Patent
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Nov 22, 2005
Grant Date -
Jan 16, 2003
app pub date -
Feb 21, 2001
filing date -
Feb 22, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for providing a protective coating in a mine comprising spraying onto the rock surfaces of the mine a hot melt adhesive in an amount to form a coating at least 1 mm, preferably at least 2 mm in thickness and allowing the coating to solidify. The hot melt adhesive preferably has a melting point on the range from 70 to 250 degrees Centigrade and may include a filler such as an inert material in finely divided form such as ground limestone, mica, sand and silica, the filler comprising between 1 and 40% by weight of the combined weight of adhesive and filler.
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