A procedure for the extrusion of large diameter pipes and thin walls, of polyvinyl chloride (Machine-translation by Google Translate, not legally binding)

摘要

Extrusion process of large diameter tubes and thin walls made of plastic materials based on polyvinyl chloride, characterized in that the extrusion is carried out upwards or downwards by means of a vertical shaft row arranged coaxially with the screw feed system. (Machine-translation by Google Translate, not legally binding)