Patent ID: 7503760

Claim:
A mold for blow molding having a base component for forming at least one portion of a concave base of a blow molded container, the base component comprising a mounting plate having connections for supply and return of a heat transfer fluid, a body having a molding surface defining the shape of the at least one portion of a concave base of the container, a mounting surface opposite the molding surface, a substantially cylindrical recess open to the mounting surface and having a roof spaced from the molding surface and comprising a central dome joined with a recess flared surround and a substantially cylindrical insert having a diverting surface comprising an insert plateau joining an insert flared surround, an inlet passage through the insert and open at the insert plateau and an outlet passage through the insert, the diverting surface spaced from the roof and side of the recess so as to define a cavity and a drain therefrom open to the outlet passage, the roof and diverting surface dispersing turbulent flow of a heat transfer fluid conducted through the base component to improve the effectiveness of heat transfer from the molding surface.