Patent ID: 6689300
Filing Date: 2004-02-10
Classification: B29D

Abstract:
A method of integrally forming a shoe with multiple material which comprises the steps of:assembling a lower mold, a middle mold and an upper mold to form an assembly wherein said lower and middle mold has respectively a lower cavity and a middle cavity; blending evenly a selected proportion of a selected coupling agent into rubber material to form a blend containing said rubber and coupling agent; melting said blend to form a melted blend and injecting said melted blend into said lower cavity to form an outsole; secondary injecting melted TPU into said middle cavity which already has said outsole located therein to form a lower sole above the outsole; removing the upper mold from said assembly and positioning a vamp over said middle mold, and pouring PU into the vamp to form a midsole.