Dispensing – Processes of dispensing
Patent
1981-06-17
1984-01-17
Reeves, Robert B.
Dispensing
Processes of dispensing
366 76, 198558, 264DIG69, 222133, 222145, 222411, 222413, G01F 1120, B67D 560, B67B 700, B65G 1736
Patent
active
044260180
ABSTRACT:
A plastic metering machine or assembly mounted on a plastic extruder, feeds plastic aggregate material of two different bulk densities simultaneously into the barrel of an extruder. The assembly has a housing which is divided into two compartments or hoppers by a downwardly converging wall which feeds into the mouth of a funnel on the upper end of a feed tube which passes through the lower compartment and terminates at its lower end adjacent to or in the entrance to the extruder. The feed tube has an external auger which, when the feed tube is rotated, meters the material in the lower compartment into the extruder. The feed tube also has outwardly extending arms which form anti-bridging elements for agitating the material in the lower compartment. A blower feeds plastic scrap material to a grinder which also receives sheet plastic scrap material and loose plastic scrap. The ground scrap from the grinder is fed into the lower compartment as the low bulk density material. The primary plastic aggregates (pellets or powder) plus such additives as are desired are fed into the upper compartment.
REFERENCES:
patent: 3797702 (1974-03-01), Robertson
patent: 3822809 (1974-07-01), Foucault et al.
patent: 3858765 (1975-01-01), Landers
patent: 3967722 (1976-07-01), Dietert
patent: 3999921 (1976-12-01), Thor et al.
patent: 4261520 (1981-04-01), Hetrick
Reeves Robert B.
Stormer Russell D.
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