Method of thermoforming using a syntactic foam plug
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United States of America Patent
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Dec 13, 2011
Grant Date -
Sep 21, 2006
app pub date -
Mar 29, 2006
filing date -
Jul 27, 1999
priority date (Note) -
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Abstract
The present invention provides an improved syntactic foam plug for plug assist thermoforming wherein such plug is composed of a thermoplastic material having a relatively high melting and/or glass transition temperature. Accordingly, the subject invention encompasses diminishing or removing the undesirable characteristics of thermoset syntactic plugs while increasing the ease by which these articles may be constructed for a given use, by forming such plugs from syntactic foams containing thermoplastics.
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