Back to results
US 2012/0256347 A1Published application
Injection molding
AssigneeRPC Containers Ltd.
InventorKhalid M. Malik
Life of this patent
Estimating the term…
Abstract
In an injection molding process, the mold parts can be moved relative to each other (separation of the mold parts shown as line 50). Injection starts as the mold parts are being moved towards each other (injection pressure shown as line 60). The movement of the mold parts stops briefly as injection is completed, and the mold parts are then fully closed.
Claims5
A method for molding articles from molten plastic material or the like in a two-part mold, the parts of which can be moved towards and away from each other, comprising the steps of:
- 1) moving the mold parts towards each other;
- 2) while the mold parts are approaching each other, commencing injection of molten plastics material into the mold;
- 3) pausing the motion of the mold parts for a brief period while injection of molten plastics material into the mold continues;
- 4) completing injection of molten plastics material into the mold;
- 5) moving the mold parts towards each other into their closed position;
- and
- 6) maintaining the mold parts in their closed position while the molten plastics material cools and solidifies.
4 more elements
A method for molding articles substantially as described herein with reference to FIG. 2.
Dependencies are inferred from the claim text.