MasterPac > About Us


MasterPac Corporation is an ISO 9001:2015 CERTIFIED company that has been in the plastic molding thermoforming business for more than 25 years and is centrally located in St. Louis, MO.

MasterPac has provided high quality thermoforming services for the automotive, medical, food, marine, hunting, fishing and electronic industries since 1990. We specialize in manufacturing clamshells, trays, and blisters.

detail of packaging machine closeup


From small runs to millions, MasterPac can help with custom designed packaging that protects your company from shrink & improves sales with a better product presentation.

Affordable Cost

MasterPac is committed to our clients, and we take pride in assisting them with a packaging design that will enhance their products without losing sight of being cost-effective.

Quick Turn Around

MasterPac’s design team has the capability to go from conceptual design to production in a short amount of time. We specialize in 3D design, rapid prototyping and short-run production in a timely manner.

Advanced Technology

Thermoforming is used to manufacture small to large plastic parts. With a shorter lead time and flexible tooling designs, thermoforming is a cost-effective method to manufacture precision parts.


If You Need Any Packaging Solutions ... We Are Available For You

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