Die for molding plastic pallets

Claim 1

A die for injection molding of plastic pallets having a top portion defining a plane top surface for carrying a load to be applied to the pallet, a bottom portion defining a plane bottom surface for supporting the pallet, and spacing portions between said top and bottom portions and wherein the top and bottom portions are formed by substantially parallel U-shaped ribs, arranged spaced from each other to form recesses between said ribs and in which the ribs and recesses of the top portion are displaced relative to those in the bottom portion so that the ribs of the top portion lie over the recesses of the bottom portion and the ribs of the bottom portion lie beneath the recesses of the top portion, said die comprising two cooperating die sections having faces facing each other and each provided on the respective face with a plurality of webs spaced from each other and projecting towards the face of the other die section, each of said webs having a pair of planar side faces and a pair of planar end faces and a free end of reduced cross-section, said webs being arranged iN a plurality of adjacent and parallel rows with the end faces of the webs in adjacent rows spaced from and facing each other to define a gap therebetween for forming vertical cross portions extending normal to the ribs of the pallet to be molded and between the top and bottom portions thereof, the webs on said two die sections being arranged in each row with respect to each other so that the webs on said two die sections intermesh free of play when said sections are closed and so as to form between said free ends of the webs on one die section and the adjacent webs on the other die section elongated spaces of U-shaped cross-section for forming said ribs of said pallet.