Top 16 Injection Molding Manufacturers in Iowa 2026

Innovative Injection Tech

West Des Moines, Iowa

Innovative Injection Tech (i2-tech) was founded in 1960 in West Des Moines, Iowa, initially producing fishing lures for the Lazy Ike company. The business remains headquartered in West Des Moines and has grown into a large-part injection molding specialist.

Lomont Molding LLC

Mt Pleasant, Iowa

Lomont Molding LLC was founded in 1982 in Mount Pleasant, Iowa, where it continues to operate a high-capacity facility running 24 hours a day. The company began as a structural foam molding operation focused on large-format parts and has since expanded into a multi-process plastic molding enterprise.

Msi Mold Builders

Cedar Rapids, Iowa

The company relocated to a 35,000-square-foot headquarters in Cedar Rapids in 1990 and added a 20,000-square-foot facility in Greenville, South Carolina, in 2001. A 12,000-square-foot expansion in Cedar Rapids followed in 2015.

Plasticology, LLC

Hawarden, Iowa

The company was established in 2007 as a custom injection and blow molding provider. It specializes in short to long production runs of plastic components, offering injection molding, blow molding, design assistance, 3D prototyping, mold design and making, secondary operations, and inventory management programs such as just-in-time, dock-to-stock, and min-max.

Stuke Iowa

Houghton, Iowa

Stuke Iowa operates from Houghton, Iowa, where it was established in 1992 as the U.S. subsidiary of the German Stuekerjuergen Group, a plastics engineering company founded in 1967.

Vantec, Inc.

Webster City, Iowa

Vantec, Inc., founded in 1983 and based in Webster City, Iowa, operates today as Vantec LLC under the Angstrom Automotive Group. The company began as a provider of custom plastic injection molded parts and has grown into a global supplier.

Agri-Industrial Plastics Co. was founded in 1978 by Dick Smith in Fairfield, Iowa.

Iowa Rotocast Plastics Inc.

Decorah, Iowa

Iowa Rotocast Plastics Inc. was founded in 1976 in Decorah, Iowa.

Plas-Tech Tooling Inc. was founded in 1993 by Dean and Marcia Sonquist in Garner, Iowa.

Plastics Unlimited

Preston, Iowa

Plastics Unlimited operates from a 130,000-square-foot facility in Preston, Iowa. The company was founded in 1993 by Terry, Nancy, and Gene Kieffer on their family farm after the physical toll of livestock farming prompted them to seek a less labor-intensive venture.