Device for use in e.g. conduit molding machine for continuous production of flexible single-or multi-layered plastics corrugated pipes, has tool parts comprising annular channels, where material melt flows into annular channels

摘要

The device has outer and inner tool parts formed in different or even-structural designs, and consisting of multiple annular channels and distribution elements. A decentralized material supply is eccentrically carried out from inside to outside for a pipe corrugated at an existing wall. Hot material melt flows into the eccentric annular channels that exhibit different depths and different widths or equal-widths. Edges carrying the distribution channels exhibit a channel or bore cross section decreasing from inside to outside.