Closed plastic vessels - produced from extruded tube sections

摘要

Prodn. of thermoplastic vessels from extruded tubes, which are cooled, cut to length, provided with moulded profiles and bonded to top and bottom elements, by heating the outer surface of the tube sections at pre-determined positions to a temp. just below the melting range of the plastic, a plasticised plastic being ejected onto the heated zones of the outer surface of the tube for the prodn. of the moulded profiles.