| 摘要 |
The present application relates to a bituminous underlay structure for non-continuous coverings, characterized in that it has an overall basis weight of 500-1500 g/m 2 and is constituted by a membrane, made of polyester or fiberglass or polypropylene or synthetic, natural or composite fabrics or non-woven fabrics with a basis weight of 30-100 g/m 2 , embedded between two first layers which are obtained by saturation/covering with elastomeric bituminous mixture with a high content of SBS or other elastomers or polymers of synthetic or natural origin, virgin or recycled. The whole is in turn embedded between at least two second layers which are obtained by spreading/covering with elastoplastomeric bituminous mixture with polymers of synthetic or natural origin, virgin or recycled. The whole is in turn covered by two third layers of finishing with non-woven fabric or talc, sand or polyethylene film. |
