New medical tool features removable core mandrels


Matrix Plastic Products (Wood Dale, IL) is bringing up to speed a complicated mold with removable core mandrels to produce a surgical component, a tube with an insert molded needle nearly five inches long.

"The mold has two ejector halves that rotate on the turntable," says Patrick Collins, molding operations manager at Matrix. "As the one side is being injected with plastic, the other is being ejected and loaded."

Matrix has three sets of core/insert mandrels that are for now being hand loaded. Design of the core/insert mandrels includes a detent that can be actuated by a lever on the mandrel to hold the stainless-steel needles, allowing the inserts to be held in place as they are being molded.
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