Steel-plastic Co-Extrusion Tooling
To enhance the rigidity of the product, a steel bar or a wooden bar can be co-extruded within the PVC. This will meet the strength requirements and the steel inside will not corrode.If you need it, I’d be more than happy to provide you with such a mold.
Production Process:
1. One 65/132 extruder is required, with a 45-degree or 90-degree feed angle, to extrude the outer plastic layer.
2. One traction machine is needed to press the inner steel strip and synchronize with the 65/132 extruder for co-extrusion.
3. The steel strips are connected using injection-molded connecting pieces.
4. The surface of the steel strip requires manual application of a ring of EVA adhesive, or alternatively, granular EVA can be co-extruded using a 25 single-screw extruder.
5. A technical detector must be installed on the extruder to ensure the cutting saw precisely cuts in the middle of the injection-molded connecting piece between the steel strips.
To enhance the rigidity of the product, a steel bar or a wooden bar can be co-extruded within the PVC. This will meet the strength requirements and the steel inside will not corrode.
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