What is Rotomolding?

Rotational Molding, also called rotomolding or rotocasting, is a thermoplastics manufacturing process for producing hollow parts by placing a powder or liquid polymer material into a hollow mold and then rotating that tool bi-axially in an oven while the material melts and coats the internal surfaces of the mold cavity. Upon completion of the cook cycle, the mold is then moved into a cooling station, where the temperature of the mold is gradually lowered until the optimum temperature is achieved to open the mold and remove the part.

The rotomolding process is used to manufacture a variety of durable, plastic parts and components such as agricultral tanks, playground equipment, plastic wall barriers and a growing number of products and innovations. As one of the youngest plastics molding processes, rotational molding continues to find new innovations and ideas, continuing to manufacture an increasing number of items.

Expertise in Rotomolding Solutions

With over 25 years of rotationally molded innovations and proven rotational molding solutions, Granger Plastics Company is the partner for your next quality and solution minded rotational molding and plastics project!

Get in touch


Custom Rotomolding leader
  • Superior Quality
  • Custom Rotomolding
  • Design & Engineering
  • Mold Shop
  • Metals Fabrication
  • Molded In Inserts
  • Secondary Assembly
  • Quality Work
Divisions of Granger
Rotomolding Industry, Rotational Molding Industry

Granger Industries

Granger Plastics Rotomolding, Granger Plastics Rotational Molding, Granger Rotomoulding, Granger Rotational Moulding

Granger Plastics

Granger Aerospace, Granger Aerospace Products, Rotational Molding Aerospace, Rotomolding Aerospace, Rotomouldng Aerospace

Granger Aerospace

Rotomolded Cemetery Vases, Rotomolded Burial Urns, Water Tight Burial Urns, ForeverSafe Cemetery Vases, ForeverSafe Burial Urns

ForeverSafe Products

Clients Feedback
Fill out my online form.
Rotomolding Leader

Granger Plastics Company

1600 MADE Industrial Drive

Middletown, OH 45044 USA

(513) 424-1955

Mailing Address

Granger Plastics Company

1600 MADE Industrial Drive

Middletown, OH 45044

Subscribe to our newsletter