METHOD OF MOULDING PLASTICS ARTICLES, AND PRODUCTS OBTAINED BY THIS METHOD

摘要

1. Method of moulding plastic material parts comprising an insert for avoiding deformations occurring after removal from the mould and cooling characterized in that the insert (1) is formed of a thin bi-metal element (2, 3) formed of two metal foils (2, 3) having different expansion coefficients, this element being pre-heated before being disposed in the mould, said element being positioned in the direction where its tendency to deformation during cooling is exerted in the direction opposite that of the tendency to deformation of the part (6).