| 摘要 |
Dual cone funnel assembly for simultaneously introducing a flow of particulate composition, or powder, into a receiving container through a dispensing tube along one path while channeling the flow of displaced air through an annular air-exhaust space along a different path surrounding the first path. The funnel assembly has an inner funnel supply element surrounded and closely-spaced from an outer funnel element to provide the annular air-relief space therebetween.The assembly may be used to feed particulate resinous extrusion composition through a dispensing funnel element to the premelt chamber of an extruder and to isolate and return the displaced air to a dust collection element.
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