Method of making a shoe sole of thermoplastic materials

Details Method of making a shoe sole of thermoplastic materials Method of making a shoe sole of thermoplastic materials

1991-07-02

1992-09-15

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 464, 156 79, 156245, B29C 6722

Patent

active

051475898

ABSTRACT:
A method of making a shoe sole which includes a midsole layer of soft material and an outsole layer having wear resistance. The midsole layer and the outsole layer are fused together in a mold which has a mold cavity smaller in size than the shoe sole and in proportion to the shoe sole. When the shoe sole is removed from the mold, the shoe sole is distorted due to a foaming of the midsole layer. The outsole layer is softened and is straightened by the midsole layer so that the shoe sole is directly formed without any cutting processes.

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patent: 4453996 (1984-06-01), Terlizzi, Jr. et al.
patent: 4564966 (1986-01-01), Chen

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