Abstract: Embodiments of the present invention relates to an injection moulding machine or injection unit and to an injection moulding method for injection moulding plastic materials (e.g., elastomeric materials), particularly according, to cold channel and hot channel techniques, comprising an extruder, a first piston/cylinder unit and a second piston/cylinder unit mounted in series thereto. The cylinder of the first piston/cylinder unit leads into the end of the second piston/cylinder unit located at a distance from an injection mould to be filled. According to an aspect of the invention, the elastomeric material is firstly led by means of the first piston/cylinder unit through the cylinder of the second piston/cylinder unit and into the injection mould, wherein the piston of the second piston/cylinder unit frees the flow path to the injection mould.
Type:
Grant
Filed:
July 21, 2005
Date of Patent:
May 19, 2009
Assignee:
Landshuter Werkzeugbau Alfred Steinl GmbH & Co. KG
Inventors:
Stefan Weyand, Hubert Degenbeck, Rainer Schmidt
Abstract: The present invention relates to an injection moulding machine or injection unit and to an injection moulding method for injection moulding plastic materials (e.g., elastomeric materials), particularly according to cold channel and hot channel techniques, comprising an extruder, a first piston/cylinder unit and a second piston/cylinder unit mounted in series thereto. The cylinder of the first piston/cylinder unit leads into the end of the second piston/cylinder unit located at a distance from an injection mould to be filled. According to the invention, the elastomeric material is firstly led by means of the first piston/cylinder unit through the cylinder of the second piston/cylinder unit and into the injection mould, wherein the piston of the second piston/cylinder unit frees the flow path to the injection mould.
Type:
Application
Filed:
July 21, 2005
Publication date:
February 21, 2008
Applicant:
LANDSHUTER WERKZEUGBAU ALFRED STEINL GMBH & CO. KG
Inventors:
Stefan Weyand, Hubert Degenbeck, Rainer Schmidt