ROTATIONAL MOULDING - WHAT IS IT AND WHAT DOES IT OFFER?

This paper discusses technological and economic aspects related to rotational molding. This technique should not be regarded as a process only for making large thermoplastics items or parts in small quantities. With this technique it is possible to produce enclosed items of greater complexity than can be done by injection or blow molding. The discussion is presented under the following subject headings - four basic stages of the rotational molding process; hollow molding; complex shapes; materials (PVC, PE, PS, ABS, cellulose acetate, acrylics, ethylene-vinyl acetate copolymer, nylon, and PP); choice of materials; laminates; finishing; inserts; economic advantages; and tooling.