Rotational moulding process and related mould for rotational moulding comprising a venting device

Abstract

A rotational moulding process for producing an article using a mould having a main body including an inner cavity, the process including inserting a fluid form polymeric material into the inner cavity, closing the main body and rotating the mould, while keeping the mould in rotation and with a shutter in a closed position, heating the main body until reaching a first temperature, while keeping the mould in rotation, heating the main body until reaching a second temperature higher than the first temperature, cooling the main body and extracting the article. During the heating of the main body until the reaching of the first temperature, the process further comprises subtracting heat from the shutter for maintaining the shutter at a respective temperature lower than the first temperature.