Top 39 Plastics & Packaging Manufacturers in Wisconsin 2026

Chicago Plastic Systems

Neenah, Wisconsin50 employees

Chicago Plastic Systems is headquartered in Neenah, Wisconsin, with a second facility in Crystal Lake, Illinois. The company was founded in September 1995 by three businessmen—Dirk Howell, John Stewart, and Leif Heggem—who started in Howell’s garage producing CPVC fittings for the metal finishing industry.

Custom Service Plastics, Inc. Corporate Headquarters

Lake Geneva, Wisconsin

Custom Service Plastics, LLC (CSP) has operated from Lake Geneva, Wisconsin since 2000. The company occupies facilities totaling more than 200,000 square feet and is certified as a Woman Business Enterprise (WBE), a Minority Business Enterprise (MBE), and an SBA-designated Small Disadvantaged Business operating under the IATF 16949 quality management system.

Flair USA

Appleton, Wisconsin

Founded in 1992 in Appleton, Wisconsin, Flair Packaging (operating as Flair USA) is a privately held, family-owned manufacturer of flexible packaging. The company began as a market-driven operation focused on customer-focused innovation and has grown into a vertically integrated supplier with facilities across North America and Asia.

McDonald Plastic Molding, Inc.

Monroe, Wisconsin

McDonald Plastic Molding, Inc. is headquartered in Monroe, Wisconsin, with additional manufacturing facilities in Cuba City and Darlington.

PREMOLD CORP

Oconomowoc, Wisconsin

Premold Corp was founded in 1995 by Ken Schweitz in Oconomowoc, Wisconsin. The privately owned company operates two facilities in Oconomowoc and a third in Monterrey, Mexico.

Radius Packaging-West Allis

Milwaukee, Wisconsin

Radius Packaging, headquartered in Milwaukee, Wisconsin, was founded in 1972. Since its inception, the company has supplied plastic packaging solutions for diverse consumer and industrial markets, building decades-long relationships with brands.

Vital Plastics, LLC

Baldwin, Wisconsin100+ employees

Vital Plastics, LLC was founded in 1994 in Baldwin, Wisconsin, located east of the Twin Cities metro area along Interstate 94. The company operates two manufacturing facilities in Baldwin and has grown to become a custom plastic injection molding and assembly solutions provider.

Allied Plastics LLC

Twin Lakes, Wisconsin

Allied Plastics LLC is based in Twin Lakes, Wisconsin. The company specializes in heavy-gauge vacuum thermoforming and custom sheet extrusion, operating 20-plus thermoforming machines capable of producing parts up to 8 feet by 14 feet by 60 inches in thicknesses from 0.060 to 0.55 inches.

Applied Molding Technologies, LLC was founded in 2006 in Frederic, Wisconsin. The shop provides thermoplastic injection molding on all-electric presses ranging from 55 to 850 tons of clamp force, and thermoset compression, transfer, and injection molding on presses from 150 to 300 tons.

Dutchland Plastics

Oostburg, Wisconsin

Dutchland Plastics has operated from Oostburg, Wisconsin since 1967, building a rotational molding business that now spans a nearly 200,000-square-foot facility there and a second plant in Canastota, New York. The firm specializes in high-volume rotational molding of large plastic parts, producing pieces up to 500 pounds and 17 feet long.