Treatment of rock surfaces
AssigneeMinova International Limited
InventorPeter Shelley Mills
Life of this patent
Estimating the term…
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.
Claims12
A method for providing a protective coating on at least one rock surface in a mine comprising the steps of:
- (a) providing a source of a solid thermoplastic polymeric hot melt adhesive;
- (b) forming a melt-flow of the hot melt adhesive from the source thereof;
- (c) spraying a sufficient amount of the melt-flow of hot melt adhesive onto the at least one rock surface of the mine to form a coating thereon of at least 1 mm in thickness, and
- (d) allowing the coating to solidify thereby to provide a protective coating on the at least one rock surface of the mine.
Dependencies are inferred from the claim text.