Bond between reinforcement and functional layers consists of paper with further layer

摘要

The bond (1) between layers at least consists of one paper, functional (3) layer and at least one reinforcement (2) layer. The paper is permeable to water vapor. The reinforcement layer consists of textile, extruded mesh, or fleecy material. The functional layer at least is upgraded. The side of the functional layer not joined to the reinforcement layer has a further layer consisting of a fabric, extruded mesh or fleece layer.