Process for controlling the hot-runner heating of a multicavity injection mould
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United States of America Patent
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Jul 18, 2000
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N/A
app pub date -
Sep 8, 1998
filing date -
Sep 16, 1997
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Abstract
To obtain simultaneous filling of all cavities (K1-K4) in multicavity injection moulds, the mould cavity pressure (p) patterns in all cavities (K1-K4) are detected and the times (t1-t4) measured from the beginning of filling till a suitably chosen reference pressure (pR) is reached for each cavity (K1-K4). By interventions in the individual heating systems of the individual hot runners (5), the temperatures in these are altered to bring the measured times of the individual cavities more in line.
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