| 摘要 |
The protection unit (10) has a flat roof including a layer (13) for guarding an installation portion and another layer (14) for guarding roof waterproofing (11) against plasticizer migration. The latter layer is made of aluminum, copper, polyethylene or polyurethane, and includes a coating. The former layer includes a composite material made of rubber granules with polyurethane bonding agent. The former layer includes starch of 6 mm approximately. The latter layer is formed as an aluminum foil of 0.02 mm thickness. |
