Apparatus for attaching a bottom plate made of a plastic material to one end of an open ended, hollow cylinder made of a plastic material

摘要

A method of securing a bottom plate made of a plastic material to one end of an open-ended, hollow cylinder made of a plastic material to produce a plastic cylindrical container, wherein the bottom plate is held in a horizontal position and the open-ended, hollow cylinder having an inner diameter slightly larger than the diameter of the bottom plate is positioned in enclosing relation to the bottom plate in such a manner that a portion of the cylinder projects upwardly a predetermined distance from the bottom plate. The upwardly projecting portion is heated and softened and bent radially inwardly into contact with an outer marginal portion of the bottom plate. The bent portion of the cylinder maintained in contact with the outer marginal portion of the bottom plate is pressed and heated, so as to join them by the fusion thereof. An apparatus suitable for carrying such method into practice includes a rotatable table on which a series of working stations are located for carrying out the process steps by a series of devices for continuously producing plastic cylinderical containers on a mass production basis.