| 摘要 |
<p>The device, for use in extrusion and moulding machines, consists of a prismatic head in which is formed mixing chamber of cylindrical shape into which lead the delivery pipes for the liqs; a piston to force the mixt. to the outlet of chamber, with the piston rod of uniform dia.; a second chamber displaced axially with respect to chamber and provided with a movable screen; and a scraper device between the chambers.</p> |
