Molding of normally non-mixable materials
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United States of America Patent
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Jan 26, 1999
Grant Date -
N/A
app pub date -
Jan 14, 1997
filing date -
Jan 14, 1997
priority date (Note) -
Expired
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Abstract
A method is provided for injection molding of parts in a mold having a mold cavity. The method comprises: 1) supplying pressurized fluid to a mold cavity prior to injection; 2) injecting a combination of non-mixable materials into the mold cavity against the pressurized fluid, thereby creating a resultant internal counterpressure within the combination of materials; and 3) maintaining the internal counterpressure within the combination of materials sufficiently to cause the materials to solidify in a predetermined configuration based on their respective modulus.
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