Abstract: The invention relates to a method for pre-treating fibre reinforced composite plastic materials prior to painting, wherein the materials are subjected to a low pressure cold vacuum gas plasma treatment without preheating the materials. The invention further relates to a method for applying a painting layer on a fibre reinforced composite plastic material, wherein the method comprises the steps of pre-treating the material using a method according to any one of the preceding claims, and subsequently applying the painting layer to the pre-treated material.

Abstract: The invention relates on the one hand to a method for providing a coating on the surfaces of a product with an open cell structure throughout its structure, in which said coating is provided by means of a plasma polymerisation process. The foam has to be prepared for the plasma polymerisation processes in respect to the specific process. Polymerisation is performed inside the open and semi-open cell structures in a qualitative and homogenious way. On the other hand, the invention relates to the use of a method as described above as a hydrophone, oleophobe, flame retardant and/or barrier coating on the surfaces of an open cell polymer throughout its polymer structure.