For the direct refeeding of edge trims or also production waste into the production extruder a special feed hopper is required. First of all the edge trims are extracted, ground and pneumatically fed into the inner bin of the hopper. An adjustable dosing screw ensures a constant feeding into the extruder. The granulate (virgin material) flows from the outer bin to the extruder. The film portion, depending on the geometry of the extruder and the product, may amount to up to 30 % of the total capacity.
No additional thermal stress of the material is caused by the direct refeeding without an intermediate granulation.
For the direct refeeding of edge trims or also production waste into the production extruder a special feed hopper is required. First of all the edge trims are extracted, ground and pneumatically fed into the inner bin of the hopper. An adjustable dosing screw ensures a constant feeding into the extruder. The granulate (virgin material) flows from the outer bin to the extruder. The film portion, depending on the geometry of the extruder and the product, may amount to up to 30 % of the total capacity. 
