HOME	FARIBO MANUFACTURING COMPANY A Division of Hoschette Enterprises 820 Northwest 20th Street Faribault, Minnesota USA 55021 (800) 447-6043 * Fax: (507) 334-0674

Where hollow parts are required, especially should they be complex and have varied shapes, Faribo’s rotational molding could be the best process. Roto Molding permits the use of special design combined with particular materials best for your own requirements.

Working with Roto Molding

Roto Molding is a very basic process. Heat is used to melt and fuse a plastic resin in a closed mold. No pressure is required. In stage one, resin is loaded into the mold. In stage two, heating and fusion takes place in the heat oven. Then the mold is rotated (in most cases, on two axes at low speed). Heat penetrates the mold and the resin adheres to the mold’s inner surface until it is completely fused. In the final stage the mold is cooled by air or water spray or both during the rotating process. The temperature is lowered at a set gradual pace. Then the mold is opened to the finished product.

With Roto Molding product size can range from small ear syringes of plastisol to immense 22,000 gallon vessels of polyethylene. Shape possibilities are almost endless. In fact, certain shapes can only be achieved through Roto Molding.

Roto Mold products will effectively replace more traditionally used materials. Less breakage is achieved and costs can often be reduced. Resistance to the elements is excellent. Changes in temperature are generally no problem unless variations are very extreme. In addition, they are not affected by most chemicals, oils and food juices. Products produced by Roto Molding are virtually “stain free” because the molding materials are not subjected to the negative effects of pressure when in the molten state.