Apparatus for forming closure liners

Details Apparatus for forming closure liners Apparatus for forming closure liners

B - Operations, Transporting

29

C

18/54

B29C 27/30 (1980.01)

Patent

CA 1067260

ABSTRACT OF THE DISCLOSURE An apparatus for moulding plastic liners or gaskets in container closures consisting of a two stage apparatus for deforming a pellet of the plastic material. The first stage comprises a heated deforming member which is adapted to heat the plastic material by direct conduction and to partially deform it. In the second stage a relatively cool final moulding die effects further deformation to impart the desired finished configuration to the gasket. The pressure member, and possibly also a workpiece support on which the upturned closure rests, is heated by means of a radiant heat source directing radiant heat onto a blackened roughened surface of the pressure member, and the workpiece support where applicable. The pressure member has a low-adhesive surface of polytetrafluoroethylene.

305104

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