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method for the manufacture of sheets of material through re investment and for the application of the same in the field of hydraulic engineering
method for the manufacture of sheets of material through re investment and for the application of the same in the field of hydraulic engineering
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机译:再投资制造板材的方法及其在水利工程领域的应用
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摘要
A method for the manufacture of wide sheets of water impermeable coating material useful in hydraulic engineering which comprises passing carrier sheet having a width in excess of 4 meters through a molten petroleum bitumen coating composition, coating said carrier sheet on both sides with said coating composition and placing the resultant coated sheet as soon as possible onto a conveyor belt while inserting between said coated sheet and said conveyor belt a surfacing material comprising one or more paper strips and a strip of plastic film easily removed from the coated carrier sheet after cooling in a manner such that the strip of plastic film forms a lateral boundary of the surfacing material.
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