Abstract: A process for the coating a substrate with a microporous layer includes at least incorporation by mixing of at least one physical and/or chemical blowing agent into an elastomer mixture, shaping of the elastomer mixture including the physical and/or chemical blowing agent by means of a calender or of a roller-head system, and application of the calendered elastomer mixture including the physical and/or chemical blowing agent to a substrate to be coated. Further, heating and blowing of the coating including the physical and/or chemical blowing agent is then provided by means of at least one heat source. In some cases, the blowing agent is composed of microspheres, which in some embodiments, may be present in non-expanded form. In some aspects, the heating and blowing of the coating directly follows the application procedure. The heat source may be an infrared source, such as a ceramic source.

Abstract: A composite material is provided for articles which come into contact with liquid or pasty foodstuffs and especially for drinking water vessels. The composite material includes a textile, lattice-like middle layer which is free of bonding agents. The middle layer is arranged between two bonding agent free cover layers which are on the basis of synthetic rubber. The cover layers are bonded to each other material-tight via the open intermediate spaces of the textile, lattice-like middle layer.