Rigid urethane self-skinning foam top frame, pallet support board, and pallet

摘要

The present invention provides a top frame made from a thermoset foam material. The top frame includes a pair of substantially parallel sides and a pair of substantially parallel ends connected to the sides to form a generally rectangular frame structure. The frame structure has an inner layer and outer surface defining a thickness. The thermoset foam material varies in density along the frame structure thickness such that the density of the thermoset foam material is greatest near the frame structure outer surface to form a hard outer shell.

主权项

1. A top frame comprising:
a pair of substantially parallel side members; a pair of substantially parallel end members connected to the side members to form a generally rectangular frame structure with a central opening, and having an inner layer and an outer surface, the frame structure having a thickness; and wherein the top frame is made from a thermoset foam material, the thermoset foam material varying in density along the frame structure thickness such that the density of the thermoset foam material is greatest nearest the outer surface to form a hard outer shell.