| 摘要 |
<p>Disclosed is an apparatus and a corresponding method for producing a continuous foamed extrudate product in which the extrusion and initial expansion of the foamed extrudate is conducted within a chamber under a partial vacuum. The foamed extrudate (110) is then removed from the chamber (102) through an orifice (106) submerged within a liquid baffle (108a, 108b). The dimensions of the foamed extrudate are monitored as it approaches the orifice and, if necessary, the effective sizing of the orifice is adjusted through the movement of a pair of side gates (124) and a single vertical gate (132) arranged external the orifice to match opening to the foamed extrudate and impede the flow of liquid into the chamber through the orifice.</p> |
