Our Services

SMI Molding specializes in plastic injection molding in the Western United States. We aim for 100% customer satisfaction and Zero defects.

What We Do

SMI is one of the premiere plastic injection molders in the Western United States. We have been doing business in Clearfield, Utah since 1981 when we started out with 4 machines and a few dedicated employees. Today SMI has expanded to a 60,000 sq. ft. facility with 30+ machines ranging from 55 to 610 tons.

Plastic Injection Molding

SMI is best known for our achievements in top quality molding of difficult materials. Our veteran team's knowledge and experience helps us stay at the forefront.


As a Full Service Custom Injection Molder, we are a complete in-house tool fabrication and maintenance facility capable of rapid response repairs.

Plastic Engineering

Staffed with experienced engineers and support staff, SMI Molding is able to take on all types of Plastic Engineering jobs, regardless of complexity.


Insert-Molding allows certain structural or aesthetic aspects of a plastic part to be inserted into the mold and the plastic will mold around the inserted part.

Gas-Assist Molding

Gas assist molding for thick walled parts greatly reduces sinks and molded-in stress. With lower molding pressures, it is also more economical for large parts.

Secondary Operations

As a Single Source Supplier, SMI is able to provide added value operations like Hot Stamping of molded products, Turn-Key Assembly, as well as Packaging.

Management Objectives

SMI is committed to the continual improvement of quality systems in order to impact customer satisfaction by leveraging decades of manufacturing and engineering experience, thereby creating repeatable products that perform to specifications.

  • Customer focus
  • New technologies, techniques and processes
  • IQMS integrated software systems
  • Safe work environment
  • Work force engagement
  • On time delivery
  • Project management
  • Profitability to provide stability to customers

SMI is staffed with full-time engineers and support staff that have a hundreds of years of collective experience.

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Rosti PCI - Clearfield, UT
(SMI Molding, Inc.)

Freeport Center, Bldg. Z-13
Clearfield, UT 84016


(801) 776-4233


(801) 825-0982