Tubular polyurethane-component manufacturing method, involves utilizing core for creation of channels and/or undercuts in polyurethane-component, where core is completely or partially formed from polymeric foam

摘要

The method involves utilizing a core (3) for creation of channels and/or undercuts in a tubular polyurethane (PUR)-component (1). The core is removed from the PUR-component after solidification of component materials. The core is completely or partially formed from polymeric foam. A partial volume is formed by a support structure from non-foamed materials such as aluminum or steel. The core or a partial section of the core is formed from an expandable polymer i.e. expandable polystyrene. The core is coated with the component materials with a sealing material e.g. silicone.