REACTIVE ROTATIONAL MOULDING – DEVELOPMENT OF A FEED SYSTEM FOR USE WITH THE MULTIPLE SHOT MOULDING TECHNIQUE
Niamh Corrigan, Eileen Harkin-Jones, Roy Crawford
Queen's University of Belfast
United Kingdom

Keywords: reactive, rotational, moulding

---

A recent revival of industrial interest in rotational moulding of reactive liquid polymers has led to a renewed research attention on this area of polymer processing. From previous research it was noted that there were several problems associated with reactive rotational moulding, including a lack of uniformity in material wall thickness distribution and the appearance of bubbles in the finished part.

A technique developed to eliminate these problems was the addition of multiple small material shots during the moulding cycle. However this technique required rotation of the mould to be stopped during the moulding cycle in order to add the material shots to the mould. This proved to be a further problem.

This paper describes the design and construction of a reactive liquid polymer feed system. This feed system allows multiple material shots to be added to the mould without the need to stop mould rotation