Modified Plastics, Inc. uses nearly 40 years of experience in developing custom compounded and engineering polymers. Modified Plastics meets the most stringent specifications while using high quality materials, we work closely with top material manufactures while utilizing our in house lab (PAL) to assure the highest quality feedstock’s and additives for our customers. Modified Plastics continues to build on a culture of excellence based on the four pillars of success, Integrity, Service, Value & Sustainability. Our goal is to provide the best customer service and products in the Plastics Industry.

Our commitment to you: To exceed expectations

Our aim is to build a long term relationship with you. The foundations of this relationship is our Service Commitment – to anticipate and exceed your expectations. Our Service commitment sets out the standards that you can expect from MPI and that we demand from ourselves. Modified Plastics, (MPI), provides rapid and dependable custom compounding with engineered polymers. We can produce small lot orders up to truckloads of material while maintaining the highest quality and service. Our goal is to provide exceptional value and service to the customer. With the combination of resins and additives, we continually meet and exceed our customers needs and expectations to provide the greatest value.There’s a good reason why MPI is one of the most trusted names in plastics, and those reasons have never been more personified than with our quality in both product and personnel, our responsive lead times and our team of Customer Service. Quite simply, our dedicated staff has made MPI a preferred choice both domestically and internationally.

Strength & Integrity

Established in 1976, Modified Plastics is committed to the highest standards of business conduct. Started in a 5,000 sq ft building, Modified Plastics’ Santa Ana Campus has expanded to include 6 separate buildings, comprising over 65,000 sq ft of laboratory, color compounding, fortified engineering polymer development and production. Modified Plastics ships compounds both domestically and internationally.Part of our mission is to be a sustainable manufacturing site, incorporating scientific methods of production and quality. With these methods, our goal is to achieve the highest standards at the best value. At Modified Plastics we have an open door policy inviting our customers to our facility for review. We believe that a customer is entitled to know everything available about the compounds MPI provides.

Our History

Modified Plastics was Incorporated in 1976 by Robert & Jocelyn Estep in a modest 5,000 Square Foot facility, as a manufacturer of Custom Compounds. Over the years Modified Plastics has specialized in fortified engineering materials. Modified Plastics has since expanded into a campus of multiple buildings which today encompasses over 65,000 Square foot of manufacturing space, including sister companies, Color Science, Inc. (Established in 1990) and Plastics Analytical Laboratories, (PAL) Established in 2008.