| 摘要 |
A device which can be used to prevent a jam of the sizing aperture in the cooling chamber of extrusion process apparatus is disclosed. The device includes a cutter blade which, when an outsized extrudate that would cause a jam of the sizing aperture is detected, operates to sever the extrudate entering the cooling chamber from that already present therein to prevent the outsized extrudate being drawn into the sizing apparatus or being pushed into the same by the extruder pressure. The device also functions to close off the aperture to prevent loss of the liquid coolant in the event of a jam. |
