Top 7 Plastics & Packaging Manufacturers in Maine 2026

Casco Bay Molding

Sanford, Maine

Casco Bay Molding was founded in February 2000 by Andrew Powell in Sanford, Maine, with a vision to produce silicone and thermoplastic products domestically. The vertically integrated facility combines product development, an in-house precision machine shop, and injection molding under one roof.

Creative Composites Group, Augusta Molding Division

Augusta, Maine

Creative Composites Group's Augusta Molding Division operates as Kenway Composites in Augusta, Maine. No founding year or individual founders are disclosed for the Augusta operation; the group emphasizes decades of combined experience across its member companies.

Maine Mold & Machine

Hartford, Maine

Maine Mold & Machine, Inc. was founded in 1985 in Hartford, Maine.

Tri Star Molding

Lewiston, Maine

Founded in 2001, Tri-Star Molding operates from Lewiston, Maine, providing plastic injection molding services to a worldwide client base. The facility houses molding machines ranging from 80 to 400 tons, capable of processing a wide variety of plastic and composite materials.

G&G Products LLC

Kennebunk, Maine

G&G Products LLC operates as a full-service molding company from its headquarters in Kennebunk, Maine, with a thermoplastic injection molding production facility located in Springvale. The company describes itself as a "start to finish" provider, though its founding year and ownership structure are not publicly disclosed.

Plastic Supply of Maine

Biddeford, Maine

Plastic Supply of Maine operates from Biddeford, Maine The company, also known as Plastic Supply Inc. of Maine, does not disclose its founding year or ownership structure in its public materials.

Thermoformed Plastics

Biddeford, Maine

Thermoformed Plastics of New England (TPNE) operates from Biddeford, Maine. The company was established to bridge a gap in the thermoforming market: large-volume manufacturers that neglected smaller runs, and small shops that lacked broad capabilities.