Canadian Packaging

Locking cap uses eight injection molded parts

By PIC staff   

General Cap-N-Lock combination-locking cap Design & Manufacturing West Dukane Corp Henry Plastics injection molding medications

Combination-dial protects medication from teens

ANAHEIM, CALIF.—Cap-N-Lock LLC has developed a combination-locking cap for prescription medications.

An industry first, the cap was designed to safeguard medication against not only children, but also teenagers, while still being accessible to seniors, according to the company.

The cap’s components were molded by Henry Plastics, a Fremont, California company. It consists of eight injection molded parts made of acrylonitrile-butadiene-styrene (ABS) plastic.

Cap-N-Lock manufactures the unit. Assembly starts from the bottom up with the locking mechanism —dial numbers included— dropped in first, followed by a tension plate and then the lower twist-on cap. The lower housing ring is then ultrasonically welded to the main housing.


The device uses precision ultrasonic welding technology by Dukane Corp., a St. Charles, Ill. Welding company.

Dukane will demonstrate how it welds the cap at the upcoming medical Design & Manufacturing West (MD&M) show in Anaheim.


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