Rotational molding is a technological process which guarantees inner tension free products with an even thickness.
Rotational molding is also suitable for large items with complex edges and can be used to create different finishes such as fake leather, embossed look, as well as various types of co-printed inserts.
Improvements in process control and developments in research into plastic powders have resulted in an increase in the range of polymers which can now be used efficiently in the molding process.
At present, linear and webbed polyethylene are mostly used for rotational molding production (pvc, polypropylene, polyamide, polycarbonates).
The uniqueness of this technology is that the mold bi-axially rotates; there is a fixed direction primary axis and a secondary axis with a variable direction.
The mold is then slowly rotated causing the softened material to disperse and stick to the walls of the mold. The centrifugal force allows for melting only on contact with mold walls. In order to maintain even thickness throughout the part, the mold continues to rotate at all times during the heating phase and to avoid sagging or deformation also during the cooling phase.
Analysis and design of new articles
Selection of suitable polyethylene for item production
Modifications and maintenance of the molds
Prototype and mold production
Finishes and Assembly