How does a rotomoulded part compare to a blow molded part?
Although both processes make hollow parts, rotational moulding offers design flexibility and moulded part characteristics that are difficult to match in blow moulding. Complex shapes with deep draws can be rotomoulded with consistent wall thickness with relative ease. Rotomoulded parts actually have their thickest wall sections in outside corners where durability is often critical. Rotomoulding tooling can be made to provide undercut and cored features that even if possible would be very costly to tool and process in blow molding. In-mould decorating and mould-in inserts are also easily accomplished with rotational moulding. Rotational moulding allows the designer more freedom to design to part function rather than to the constraints of the process or tooling.