Method for forming air chamber in shoe sole

Details Method for forming air chamber in shoe sole Method for forming air chamber in shoe sole

1995-08-15

1996-04-02

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 451, 264 465, 2642791, 156 79, B29C 4406, B29C 4412

Patent

active

055037860

ABSTRACT:
A method for forming an air chamber in a shoe sole includes disposing a film between two EVA sheet materials and hot-pressing the sheet materials so as to fuse the sheet materials together. The film prevents the sheet materials from being fused together so as to form a gap between the sheet materials. The air generated during hot-pressing and foaming process is accumulated in the gap so as to form an air chamber in the shoe sole such that the air chamber can be formed in the shoe sole without air bags and without injecting pressurized air into the shoe soles.

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