| 摘要 |
<p>The invention relates to a method of making a grooved reinforced layered bituminous membrane comprising the steps of:
- providing a web of a reinforcing material ,
- applying a layer of a hot liquid adhesive, and
- applying a roller having a surface pattern of grooves onto said layer of an adhesive, to form a pattern of grooves in the surface of said layer of an adhesive.</p> |
