Process for gas assisted and water assisted injection molding
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United States of America Patent
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May 24, 2005
Grant Date -
Jan 8, 2004
app pub date -
May 9, 2003
filing date -
Jul 1, 1999
priority date (Note) -
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Abstract
A liquid and gas assisted injection molding apparatus comprising a source of liquid coolant, a source of compressed gas, a source of heated viscous plastic, a mold cavity means for controllably injecting said plastic into said cavity, means for controllably injecting said compressed gas into said cavity, means for controllably injecting said liquid coolant into said cavity, and means for selectively controlling the injection of said plastic, gas and liquid coolant.
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