Company overviewMount Vernon, Indiana / Since 1982
U.S. injection molding experience built for complex programs and lasting partnerships
Infinity Molding & Assembly is a full-service custom injection molding partner specializing in difficult geometries, engineering-grade thermoplastics, controlled production, automation, inspection, and value-added assembly.
One company / two environmentsShared operating direction
Two specialized manufacturing facilities create one connected customer experience
Infinity separates the environments that different markets require while keeping engineering, quality, leadership, and program communication close together on one Mount Vernon campus.
Explore the campusSelect a facility profile
Facility 01 / Automotive + Industrial
Flexible production for exacting, complex molded components
The main facility supports automotive, industrial, consumer, and non-cleanroom medical programs with all-electric molding, robotics, engineering support, inspection, and secondary operations.
- IATF 16949 automotive alignment
- Engineering-grade and high-heat resins
- Automation and value-added assembly
Company evolutionInvestment follows the work
More than four decades of manufacturing growth have built a modern, all-electric platform
Infinity has evolved by adding the equipment, environments, and disciplines customer programs need - without losing the speed and accountability of a focused organization.
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1982
Manufacturing roots
Mid American Plastics begins in Southwest Indiana with four small molding machines and a compact German-made precision press.
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1995
Indiana manufacturing connection
The company begins its long-standing membership in the Indiana Manufacturers Association.
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1996
MAPP charter member
Infinity joins the Manufacturers Association for Plastics Processors as a charter member.
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2009
Dedicated medical environment
A separate ISO Class 8 facility opens on the same campus.
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2023
The hydraulic era ends
The final hydraulic press is decommissioned, completing an all-electric platform spanning 55 to 500 tons.
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2026
Indiana Manufacturers Hall of Fame
The Indiana Manufacturers Association inducts Infinity in recognition of its commitment, investment, and growth.
Connected manufacturing modelFrom review through release
Full-service capabilities keep technical decisions connected to production reality
Design questions, tooling access, process development, automation, measurement, and assembly can stay connected to the people responsible for making the part.
View all capabilitiesCertified operating frameworkQuality across the company
Four management-system certifications turn expectations into repeatable operating evidence
Infinity's certified systems support the different requirements of medical, automotive, industrial, and environmental performance while reinforcing one shared culture of traceability, documentation, risk awareness, and improvement.
Review certificationsThe Indiana Manufacturers Association recognized Infinity's long-term commitment to Indiana manufacturing.
- Prior recognition2024 Quality + Delivery Award
Technology + talentKnowledge stays close to the work
Experienced people turn capable equipment into responsive manufacturing partnership
Infinity's engineers, program managers, quality specialists, technicians, production teams, and leaders work close to the floor and close to one another. That proximity helps technical questions move quickly from observation to decision.
Ask the next question before a process issue becomes a production problem.
Keep decisions close to the people responsible for executing them.
Build relationships, equipment, and knowledge that can support the next program.
Rooted in Southwest IndianaLocal investment / broad reach
Domestic manufacturing strength starts with a company invested in its community
Infinity's Mount Vernon roots shape a practical approach to work: support the people who build the product, maintain a responsible operating environment, and stay engaged with the community surrounding the campus.
Read about Infinity's valuesPaid contribution days help employees support community projects and charitable events.
A shared environmental management system connects improvement, compliance, and responsible procurement.
Domestic operations keep engineering, quality, production, and customer communication within direct reach.
Company directoryExplore Infinity
Meet the company behind the parts, processes, and partnerships
Explore Infinity's history, campus, leadership, latest updates, and opportunities to join the team.