Rotationally molded products run the gamut from industrial components to children’s toys. Examples of products made by custom rotomolding companies include:
Custom rotomolding is particularly well-suited for all these applications and much more. While the resulting parts can be quite complex, the four-stage process itself is simple:
A wide range of resins can be used to make rotationally molded products, including polycarbonate, nylon, PVC and polypropylene, although polyethylenes make up about 80% of all material used in rotomolding.
Rotational molding can accommodate a broad array of design features, such as:
Rotationally molded products also offer a wide range of benefits, including:
Because of the lower tooling requirements, rotomolding also provides a faster part-to-market turn-around than other plastics processing methods.
Custom rotomolding provides additional advantages when it comes to rush deliveries or short runs. In fact, products can be rotationally molded in low volumes as well as volumes as high as 100,000 parts annually. Part size can range from a few inches to 20 feet or more.
Compared to other plastics processing methods, rotomolding also uses less scrap. For instance, rotational molding produces no sprues or runners like injection molding, and there are no off-cuts or pinch-off scrap as with blow molding.
Rotational molding companies can range from small, regional concerns to major international molders, like Centro Inc.