Granger Plastics Rotational Molding

Aluminum Mold Fabrication • World Class Manufacturer of The I.S.S.  • 

The process of Rotational Molding is a very unique process. Heat is used to melt and fuse plastic resin in a closed mold. Unlike most other plastic processes, no pressure is involved. The four-stage process includes loading the resin in the mold, heating and fusing the resin, and finally, cooling and unloading the mold. After the charged mold is moved into an oven, the mold is rotated simply upon a rotating two axes arm at a low speed. As heat penetrates the mold, the resin adheres to the mold's inner surface until it is completely fused. The mold is then cooled by air or water spray or a combination of both, while still rotating, thus lowering the temperature in a gradual manner. The mold is opened, finished part removed and the mold is recharged for the next cycle. A variety of materials are available. The most widely used is polyethylene. Other potential materials include plastisols, nylon, fluoropolymers, polycarbonate, polypropylene, polyurethane, elastomers, etc.  With the Rotational Molding process, parts can be molded economically in a variety of shapes and sizes, many of them would be impossible to produce by any other process. 

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  2. Rotational Molding, Roto-Molding, Plastic Roto Molding, Rotocasting, rotomolding, Rotational Moulding,
  3. Rotational Molding, Roto-Molding, Plastic Roto Molding, Rotocasting, rotomolding, Rotational Moulding,
  4. Rotational Molding, Roto-Molding, Plastic Roto Molding, Rotocasting, rotomolding, Rotational Moulding,

Specializing in the large and difficult to mold products and components, Granger Plastics keeps itself ahead of the rest, by constantly pursuing better innovations. By continuing to consistently find new developments within the potential of Rotational Molding, Granger Plastics plays an integral role in many companies new products or process developments. Producing parts of extreme strength and durability, Rotational Molding, lends itself to produce some of the wildest conceived products ever! Products such as In Ground Safety Shelter, that have polymer body life spans that will exceed 300 years! These kinds of factors show how Granger Plastics continues to innovate amongst other Rotational Molders.

Rotational Molding Arm In Cooling Cycle!

Watch these parts take a 15# sledge hammer like its nothing!

Rotomolded Tornado Shelter Door FEMA 320/FEMA 361 testing

See the industry leading Granger ISS Storm Shelter go thru FEMA 320 and FEMA 361 testing using the SAME DOOR! How is that for Rotational Molding strength and durability!

contact@grangerplastics.com

1(866)510-9701 Toll Free
(513)424-1955 Phone
(513)424-4799 Fax
1600 MADE Industrial Dr.
Middletown, OH 45044

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