Globally recognized
Rotational Molding Leader
Granger Plastics has provided industry-leading rotational molding solutions since 1994.
Custom Rotomolding
Providing complete, turnkey custom rotational molding solutions since 1994.
Learn MoreRotomolding Design
Providing full service Rotomolding Design services utilizing 3D modeling software
Learn MoreMolds for Rotomolding
Offering in-house mold fabrication, mold maintenance & repairs for customers!
Learn MoreTrim & Assembly
Providing secondary services including trimming, assembly, packaging and drop shipping!
Learn MoreQuality focused
rotomolding leader.
Rotational Molding Industry Leader
Building on internationally recognized rotational molding innovations since 1994, Granger Plastics continues to provide industry-leading custom rotomolding services for a wide range of demanding applications. Our experience spans industries from aerospace and material handling to waste management and other specialized markets.
Custom Rotational Molding Solutions & Innovations
Offering complete, turn-key roto-molding solutions by providing Rotational Molding Design, Molds for Rotational Molding, Custom Rotomolding Services, Trim & Assembly, Packaging and even drop shipping to your customers!
Rotational Molding Design
Providing clients with 3D modeling design services for their rotomolding projects.
Molds for Rotomolding
Building molds and metal fabrications for Granger's rotomolding customers!
Custom Rotomolding
Providing high quality, custom rotational molding services for OEMs and more!
Learn more about Granger Plastics and
its related divisions.
``...we are pleased to advise that the new PolyCone produced by Granger Plastics Company is performing well in the field: Better impact resistance, better scuff resistance and lower cost... We are pleased with the results of our material conversion project with GPC.``
``I had this (tornado) shelter installed a few years ago and this product and company are outstanding!``
``After dealing with other molders for nearly 10 years, Granger Plastics has become my premier rotomolding supplier with their attention to quality and detail...``
What is Rotational Molding?
Rotational Molding is a manufacturing process using a hollow mold that is filled with a shot weight of material and heated inside of a oven while rotating slowly around 2 perpendicular axes. Learn more about the rotomolding process in the video to the right!
How do customers start a new Custom Rotomolding Project?
New custom rotational molding projects are usually started with a meeting consisting of a product consultation, where features, functions and expectations are shared. Then the design process will lead to the creation of new tooling or molds. Once the tools are complete, the custom rotomolding process can begin manufacturing. Learn more about the custom rotomolding process here!
What types of products are rotationally molded?
A wide and growing variety of products are manufactured from the rotomolding process. Being a virtually stress free application, rotomolding produces extremely durable products that can withstand most all impervious weather conditions. Playground Equipment, Water Tanks, Road Barriers, Toys and a growing number of products are all produced via Rotational Molding. Learn more about Rotomolding here!
