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US 4,084,390 AGranted
Apparatus for packaging bulk material
AssigneeRovema Verpackungsmaschinen GmbH
InventorsFlorian Schmachtel, Heinrich Mueller
Life of this patent
Estimating the term…
Abstract
A method and apparatus for packing of bulk materials. The bulk material is measured in portions and dispensed into a fill pipe. Suction probes are provided for evacuating the entrapped gas from the bulk material while in the fill pipe. The fill pipe is then lowered against a stop to suddenly jar the fill pipe to effect a release of the gas-free bulk material into a tubelike container. Thereafter, the top of the tubelike container is sealed closed and lowered into a bag and delivered to a station whereat the bag is sewn closed.
Claims18
An apparatus for packaging of powdery bulk materials, comprising:
- a flexible tube bag forming machine having a generally vertically aligned hollow fill pipe means thereon around which is formed a flexible tube container;
- cross sealing jaw means located below the lower end of said hollow pipe means and movable laterally back and forth for periodically closing and sealing the lower end of the material forming said flexible tube container;
- bulk material measuring and dispensing means for measuring and dispensing of bulk material portions, said dispensed bulk material portion being received in said fill pipe means only after said cross sealing jaw means has closed and sealed said lower end of said flexible tube container;
- suction means for evacuating gas contained in said bulk material portion in said fill pipe means, said suction means comprising at least one suction probe having suction openings over the outer surface thereof, said suction probe being arranged in the interior of said fill pipe means;
- and
- expelling means for simultaneously expelling said bulk material portion from said fill pipe means into said flexible tube container and effecting the removal of said flexible tube container from said lower end of said fill pipe means.
3 more elements
Dependencies are inferred from the claim text.