APPARATUS FOR THE INJECTION MOLDING OF SYNTHETIC-RESIN ARTICLES

摘要

An injection system for use with injection-molding machines wherein a storage chamber or accumulator is filled with the thermoplastic synthetic resin during the charging of the mold and, during shrinkage of the mass within the mold cavity, the contents of this reservoir are forced into the mold cavity to compensate for such contraction. Subsequent injection-molding operations are carried out as soon as the previous injection-molding operation is terminated and the shrinkage or contraction of the mass within the previously-charged mold cavity begins.