Plastics foam decorative sheets prodn. - by steam-post-expanding a foamed blank in indirectly heated mould

摘要

Parent patent describes the mfr. of plastics foam panels and similar mouldings, esp. decorative panels, in a mould. Improvement is that a foam block blank is post foamed in a mould whose cavity corresponds to the shape of the intended finished moulding. Post-foaming is effected in an indirectly heated mould, with the aid of steam.