US Patent 9889587 Composite ribbed expanded polystyrene pallet and manufacturing method thereof

A manufacturing method of a composite ribbed expanded polystyrene pallet, which includes prefabricating the base support according to the bottom shape of the body; placing the base support in a concave mold matched with the base support; placing the plural reinforcing ribs on a supporting bracket of a raised mold; forming a mold cavity; and injecting ore-expanded polystyrene particles to produce the body, meanwhile the body is combined with the base support to form the pallet; wherein the reinforcing ribs are fixed by the supporting bracket, one end of which is provided with a spring leaf configured to engage the plural reinforcing ribs, during production process, the free end of the spring leaf inserts into the process hole to fix the reinforcing ribs, after completion of forming process, the free end of the spring leaf is removed together with the raised mold, while the reinforcing ribs stay inside the body.