Patent ID: 6843646
Filing Date: 2005-01-18
Classification: B29C

Abstract:
1. A mold assembly for use in a plastic blow molding process, the mold assembly comprising: a mold cavity shell made by nickel vapour deposition; the mold cavity shell having a cavity portion including a front face, a rear face and peripheral edge portions, the front face defining a cavity in the shape of a portion of a product to be molded; the mold cavity shell also having coplanar, peripheral side portions attached to said peripheral edge portions, the side portions defining front surfaces adapted to mate with corresponding surfaces of a mating mold cavity shell to define the product to be molded; a mold holder located rearwardly of the mold cavity shell; means for releasably connecting the mold holder to the peripheral side portions; and the mold holder defining an inner wall spaced from the rear face of the mold cavity portion to define a heat transfer passage between said inner wall and said cavity portion, the mold holder inner wall being formed with flow enhancement surface irregularities in the form of a series of parallel grooves.