Method of making ventilative insole
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United States of America Patent
Stats
-
Jan 2, 2007
Grant Date -
Dec 8, 2005
app pub date -
Jun 3, 2004
filing date -
Jun 3, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of making an insole has the steps: a) Prepare a mold with a cavity therein. The mold has a plurality of protrusions at a portion of a sidewall of the cavity. b) Inject a foaming material into the cavity of the mold. c) Strip the mold to get a piece material with a plurality of pores at a predetermined portion thereof. The piece material has a skin layer on a surface thereof and sidewalls of the pores and the pores form a symmetrical pattern on the piece material. d) Cut a layer of a side of the piece material off to expose ends of the pores. d) Cut the piece material to get the insole.
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