Rotodea S.r.l.

Rotodea is recommended as a partner for design, industrialization and production of plastic articles printed with rotational technology. Rotodea has also a fully equipped department for liquid painting to complete rotational molded items; moreover, once printed,those parts can be assembled at our assembly line to provide finished and packed articles to be sold to final customers. Rotational molding is a particular technique of molding thermoplastic materials that allows to obtain hollow products of various sizes. It is a processing technology particularly recommended for producing, in small series, large objects and internally hollow items that can not be obtained with molding injection, etc. In the Rotational Molding process, Rotodea uses the following polymers: polyethylene, polypropylene and, for some specific products, polycarbonate. For Rotational Molding, our company uses horizontal rotating units, called carousels equipped with three mold holder arms that automatically pass through the various working stations: loading the polymer into the mold, firing, cooling, extraction of the finished product. For heating (cooking) we use the forced hot air system: clean, cheaper, safer. The material (generally in powder form) is loaded into the mold and rotated simultaneously on two perpendicular axes inside the furnace. The powder during the heating phase gradually becomes fluid in order to reach every point of the mold inner surface, in this way we obtain a thickness which will become solid in the subsequent cooling step. In the last phase of the process the mold is opened for the extraction of the obtained product and to introduce new "powder" for the next cycle.