Plastics processing roll, plastic film processing device and method for producing double-sided structured plastic films

摘要

The present invention discloses a plastic processing roll (1), comprising a rigid inner cylinder (11) covered at least partially by at least one flexible liner (13). Said flexible liner (13) comprises a plurality of fluid ducts (13'), each of which being connected to an inflow duct (16') and being connected to an outflow duct (16'). An elastic metal sleeve (17) encases said flexible liner (13) and is designed to be friction-locked by means of pressurizing the fluid ducts (13'). Said flexible liner (13) is formed by a plurality of longitudinal elements (130) being arranged in parallel to each other, wherein each of said longitudinal elements (130) houses at least one of said fluid ducts (13'). Furthermore a plastic processing device and a method for producing double-sided structured plastic films is disclosed.