Phone: 906.932.5025  | 



Since 1979, Ironwood Plastics has been a leader in the plastics industry. Founded by Gordon K. Stephens, the company was sold to CTB, Inc., a Berkshire Hathaway Company, in 2010.  We recognize that technology is constantly changing and our state-of-the-art facilities in Ironwood, Michigan and Two Rivers, Wisconsin enable us to stay ahead of the latest trends and technologies, giving our clients the highest quality products to meet their unique specifications. 

Our management staff has over 200 years of experience in the plastics industry, giving clients the confidence that our team is qualified to handle any complex and challenging job that comes our way. We have built our reputation on performing the most difficult projects in the industry with an emphasis on insert molding and engineered materials. We look forward to the future and continuing to provide exceptional products and services for our clients’ ever-changing needs.

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Our Vision
To Be a World Class Injection Molder of Complex Projects

Our Guiding Principles

We will treat our fellow team members, customers and vendors in a professional and polite manner.

We will behave in a trustworthy fashion by being honest and keeping commitments.

We will strive for outstanding performance in all that we do.

We will keep each other informed of important issues and resolve concerns in a professional manner.

We will work together to achieve our vision and goals.

Registrations – Memberships

IATF 16949:2016
BSI Certificate – MI BSI Certificate – WI
Manufacturing Alliance
ITAR Compliant

CTB, Inc.

Ironwood Plastics, Inc. is a subsidiary of CTB, Inc.
CTB, INC. is a leading global designer, manufacturer and marketer of solutions used by its customers primarily for preserving grain; for raising pigs and poultry to harvest meat and eggs; and for processing poultry, fish and other foods.