Process for producing hollow resin molded article

摘要

According to the present invention, a hollow molded article of high quality can be produced by conducting the following steps of:providing a small-sized molding machine comprising a mold having a pair of mold halves wherein at least one of the mold halves comprises a body and a slidable block;supplying a resin in an unsolidified state between the mold halves to fill a mold cavity having a first clearance with the resin;supplying a pressured fluid into the resin lying between the mold surfaces;moving the slidable block from a first position to a second position;opening the mold until a cavity clearance becomes a second clearance which is larger than the first clearance; andopening the mold to take out the hollow molded article.