EVA insole manufacturing process
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United States of America Patent
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-
May 3, 1994
Grant Date -
N/A
app pub date -
Feb 22, 1993
filing date -
Feb 22, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An EVA insole manufacturing process includes a step of making a molding by injecting molding an EVA resin and foaming agent mixture without through crushing or cutting procedure, and a step of heating the molding thus obtained in a mold so that it forms into a predetermined shape. Two or more moldings which respectively contain a different concentration of foaming agent or a different pigment color may be molded together so as to produce an insole which has different hardness and color at different parts thereof.
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