Protective Sheet Material and Method for Making Same

摘要

A protective sheet material of a laminate structure and a method of manufacture in which the sheet material has a plastic membrane layer joined to a layer of felt. Subsequent to the joining of the felt to the plastic membrane , the felt is saturated with petroleum wax including plasticizers and corrosion inhibitors. A second layer of felt can be joined to the opposite side of the plastic film to provide a sandwich of a plastic membrane between two layers of saturated felt. When this sheet material has been applied in an overlapping manner, there is a felt-to - felt seal at the overlap. The plastic and felt can be joined by heat fusion or by adhesives.