Method for manufacturing thick asphalt sheet
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United States of America Patent
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Sep 1, 1987
Grant Date -
N/A
app pub date -
Jan 25, 1985
filing date -
Jan 26, 1984
priority date (Note) -
Expired
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Abstract
A method for manufacturing a thick asphalt sheet comprises preparing a thick sheet material made of non-woven fabric of synthetic material, passing said sheet material through at least one pair of pressing rolls from the upper side to the lower side and feeding and storing molten petroleum asphalt into a concavity formed on the upper side of said pair of rolls, whereby the molten petroleum asphalt is pressed into the sheet material when said material passes through said pair of rolls, thereby forming an asphalt sheet. The asphalt sheet thus manufactured is immediately led onto a processed ground surface to form a waterproofing layer thereon.
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