Over-molded preform system and method
AssigneePlastipak Packaging, Inc.
InventorRoald Duchateau
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Abstract
A system for forming injection molded articles includes a turret, a first mold unit, and a second mold unit. In an embodiment, the turret includes a plurality of core plates and each core plate includes a plurality of core pins. The first mold unit may be configured to form an inner injection molded layer, and the second mold unit may be configured to form an outer injection molded layer over the inner injection molded layer. In an embodiment, the first mold unit and the second mold unit are configured to mold at the same time, and to provide opposing clamping forces. Processes involving over-molded articles are also disclosed.
Claims20
A system for forming injection molded articles comprising:
- a turret including a plurality of core plates, each core plate including a plurality of core pins;
- a first mold unit configured to form an inner injection molded layer;
- and
- a second mold unit configured to form an outer injection molded layer over the inner injection molded layer;
- wherein the first mold unit and the second mold unit are configured to mold opposing sides of the turret simultaneously, and the system is configured to provide opposing clamping forces with respect to the first mold unit and the second mold unit.
A method for forming injection molded articles comprising:
- providing a first mold unit, a second mold unit, and a turret including a plurality of core plates, wherein the turret is disposed between the first mold unit and the second mold unit;
- molding an inner injection molded layer in a first turret position;
- rotating the turret to a second turret position;
- rotating the turret to a third turret position, the third turret position opposing the first turret position;
- molding an outer injection molded layer over the inner injection molded layer, wherein a common clamping force is used with molding of the inner injection molded layer and the outer injection molded layer;
- rotating the turret to a fourth turret position;
- and
- removing a molded article from the turret.
The method of claim 19, including use of at least one of a cavity plate, a stripper plate, and an end-of-arm tooling (EOAT).
Dependencies are inferred from the claim text.