| 摘要 |
<p>Molten plastic is injected into a mold cavity via a hot runner system including at least one shooting pot (69,79). The flow of molten plastic is controlled via a ball check valve (66,82) including the steps of opening the ball check valve (66,82) via injection pressure in the inlet conduit (65,88), and closing the ball check valve (66,82) via injection pressure from the injection piston (71,81) in the shooting pot (69,79). <IMAGE></p> |
