Globally recognized
Rotational Molding Leader

Granger Plastics has been providing industry leading Rotationally Molded Solutions for over 28 years!
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Custom Rotomolding

Providing full service, complete turn-key custom rotomolding solutions for nearly 3 decades!

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Rotomolding Design

Providing full service Rotomolding Design services utilizing 3D modeling software

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Molds for Rotomolding

Offering in-house mold fabrication, mold maintenance & repairs for customers!

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Trim & Assembly

Providing secondary services including trimming, assembly, packaging and drop shipping!

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Quality focused
rotomolding leader.

Rotational Molding Leader

Providing nearly 3 decades of industry leading solutions from Aerospace to Waste Management and virtually everything in between!

Turnkey Rotomolding Solutions

Complete offering of Rotational Molding services. Design, production, trim & assembly- even drop shipping to your customers!

Design & Molds for Rotomolding

Industry leading design and in-house molds and metal fabrications for customers!

pulled a rotomolded container
Loading a mold for rotomolding
Granger Industries Logo
Granger Aerospace Rotomolding
Granger ISS Rotomolded Tornado Shelter Logo
Sandsaver Rotomolded Beach Erosion Solution
ForeverSafe Cemetery Vases & Cremation Urns Logo

Rotational Molding Industry Leader

With nearly 3 decades of internationally recognized rotational molding innovations,
Granger Plastics continues to provide industry leading custom rotomolding services
for a variety of industries ranging from Aerospace to Waste Management- and virtually everything in between!
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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!
Rotomolding 3D Design

Rotational Molding Design

Providing clients with 3D modeling design services for their rotomolding projects.

Showing a Rotomold being built

Molds for Rotomolding

Building molds and metal fabrications for Granger's rotomolding customers!

Custom Rotational Molding

Custom Rotomolding

Providing high quality, custom rotational molding services for OEMs and more!






Molds Built


Years Rotomolding
Granger Plastics Company is a one-stop, full service Rotational Molding solutions provider offering high quality, rotomolded products to a growing number of OEMs and companies all across the globe. Offering complete Rotational Molding design services, in house mold and tooling services along with custom rotomolding production, Granger is your ideal partner for full service rotational molding expertise!

Learn more about Granger Plastics and
its related divisions.

Custom Rotomolded Semi Tail Cone
``...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.``
Jim P. Maintenance Director
Rotomolded Tornado Shelter
``I had this (tornado) shelter installed a few years ago and this product and company are outstanding!``
Steve A. Granger ISS Tornado Shelter Customer
Rotomolded Soap Containers
``After dealing with other molders for nearly 10 years, Granger Plastics has become my premier rotomolding supplier with their attention to quality and detail...``
Matt W. Custom Rotomolding Customer

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!

Rotomolding Video

Offering complete, full service custom rotational molding services! Including designs for rotational molding, custom rotomolding and trim, assembly, packaging and even drop shipping to your customers!

Rotational Molding

Nearly 30 years of industry leading Solutions Beyond Expectations!


Providing leading Rotomolding Design and 3D Modeling Services.


Providing high quality custom rotomolded solutions for a variety of companies.


Nearly 30 years of internationally recognized rotomolding excellence.

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