Article of footwear formed from two preforms and method and mold for manufacturing same
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United States of America Patent
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Mar 20, 2018
Issued Date -
N/A
app pub date -
Jul 6, 2015
filing date -
Aug 10, 2011
priority date (Note) -
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Abstract
A method of manufacturing a midsole includes placing first and second preforms into a midsole recess of a mold, with first and second portions of the mold defining a first overflow chamber connected to the first recess; closing the mold by positioning the first and second portions in contact with one another; heating the mold for a predetermined period of time at a predetermined temperature such that the first and second preforms melt and bond together to form a midsole, with a portion of each of the first and second preforms flowing into the first overflow chamber to form a first overflow portion; removing the midsole from the mold; allowing the midsole to expand; and cutting away the first overflow portion.
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