Method for forming shaped plastic shells
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United States of America Patent
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-
Jul 25, 1989
Grant Date -
N/A
app pub date -
Jun 19, 1987
filing date -
Jun 19, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for heating a plurality of molds for casting heat fusable thermoplastic material each of the molds having casting surfaces and each of the molds having outer mold profiles which differ and wherein the molds are moveable into a mold chamber including the steps of providing a hot air distributor with different tube length profiles thereon; advancing a selected mold into the heating chamber and indexing the distributor to selectively match the outer profile of a selected mold with a selected tube length profile and directing hot air through the selected tube length profile for uniformly raising the temperature of the selected mold and casting heat fusable thermoplastic material in the heated mold to cause the heat fusable thermoplastic to adhere to the casting surface.
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