Method of removing molded natural resins from molds utilizing lifter bars

摘要

A process of injection molding a natural resin into a mold cavity including lifter bars as part of the ejection system for extracting the molded animal chew of the mold cavity. The lifter bars are provided with a contacting area having a relatively high surface area ratio relative to surface area of the molded part that remains in contact with the mold after injection and mold opening.