Method for producing an EVA sole material
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United States of America Patent
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Issued Date -
Nov 24, 2005
app pub date -
May 24, 2004
filing date -
May 24, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for producing an EVA sole material comprises the steps of uniformly mixing EVA (ethylene-vinylacetate) material and foam material sufficiently as a mixture material; using at least one rollers rolling through the mixture material as a sheet; cutting the sheet into a plurality of sub-sheets; overlapping some of the plurality of sub-sheets to have a predetermined weight; placing the overlapping sub-sheets into a sealed space in a mold having a texture of a shoe; venting and vacuuming air within the space; foaming the sub-sheets in the mold; vacuuming the sub-sheets in the mold; transferring the sub-sheets through a transfer belt with different temperature stages of 75.degree. C., 65.degree. C., 55.degree. C., 35.degree. C. sequentially through a time period of about 40 minutes; wherein each temperature being retained another predetermined time period in the transfer belt; and checking and packing the produced sub-sheets.
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