| 摘要 |
13 Title: FILTER SCREEN PACK FOR EXTRUSION DIE The filter intercepts dirt emanating from a molten-polymer extruder. The filter is clamped between perforated support plates, and a rotor sweeps the holes in t he upstream plate. The rotor defines a cavity which communicates with a small sector of the holes at any one time. The cavity is openable to drain, via a valve. The melt is under high pressure, to which the cavity is exposed. The rotor is rotated by means of a drive-shaft, and the drain is located co-axially with the drive-shaft.</SDOA B>
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