Production of thermoset pressure gelation castings

摘要

PCT No. PCT/GB96/00469 Sec. 371 Date Aug. 20, 1997 Sec. 102(e) Date Aug. 20, 1997 PCT Filed Mar. 1, 1996 PCT Pub. No. WO96/27487 PCT Pub. Date Sep. 12, 1996A process for making a cured plastics moulding by introducing a curable resin composition to a heated mould and supplying further resin under pressure to compensate for shrinkage of the composition including heating the curable resin composition either before entry or as quickly as possible on entry into the mould, or both to a temperature which permits the satisfactory filling of the mould before gelation and subsequent progressive gel from the point furthest from entry, back to the point of the mould entry, and wherein the entry parts of the mould are heated to a temperature at least as high as the temperature of the final fill point of the mould.