| 摘要 |
<p>A method for manufacturing bands of bituminized roofing material, wherein a band of porous carrier material is impregnated with bitumen, wherein the band of porous carrier material is provided on a supporting surface provided with openings, hot bitumen is provided on the side of the band of carrier material remote from the supporting surface, and a pressure difference is created across the supporting surface, so that the hot bitumen penetrates into the carrier material.</p> |
