Apparatus for mixing reactive synthetic-resin components
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United States of America Patent
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Jan 11, 1994
Issued Date -
N/A
app pub date -
Jun 24, 1992
filing date -
Mar 23, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A mixing head for a mold can receive two or more reactive synthetic resin components in a mixing chamber in which a mixing-chamber piston is displaceable to drive the residues into a first calming chamber communicating with the outlet of the mixing chamber. The first calming chamber also has a piston or plunger which can be advanced to drive the residues into a second calming chamber connected to the outlet of the first calming chamber. The second calming chamber has a second piston displacing the mixture into the mold cavity. Because the pistons of the first and second calming chambers can be retracted as the mixture flows through these chambers, a highly effective calming effect can be obtained for the turbulent mixture of the mixing chamber without throttling.
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