Paper making and fiber liberation – Processes and products – Article forming processes
Patent
1993-03-18
1995-01-17
Jones, W. Gary
Paper making and fiber liberation
Processes and products
Article forming processes
162101, 162230, 162410, D21F 1300
Patent
active
053823257
ABSTRACT:
A method and apparatus for forming articles, used as dunnage material, from pulped paper products includes a paper shredder that forms the pulped paper and delivers it to a slurry tank. The slurry tank gravity feeds the slurry into a slurry reservoir where a pump pumps the slurry into molds. A plunger delivers compressed air to the slurry blobs contained within each molds to expand the slurry blobs to the shape of the molds and to force the water in the slurry through an outlet in the bottom of the molds to a vacuum chamber connected to the molds. The delivery of compressed air further forms a cavity within the expanded slurry blobs. During the next four steps, the molds again connect to the vacuum so that additional water is forced from the pulp into the vacuum chamber. Finally, an ejector supplies compressed air to the bottom of the molds such that the finished articles are propelled from the molds onto a conveyor which delivers the cubes to packaging machines.
REFERENCES:
patent: 1872533 (1932-08-01), Von Hildebrandt
patent: 2579036 (1951-12-01), Edelman
patent: 3933959 (1956-01-01), Skochdopole
patent: 4621022 (1986-11-01), Kohaut et al.
patent: 4997091 (1991-03-01), McCrea
Karnowka Bernard J.
Warda Thomas S.
Comuzzi Donald R.
Envirocube, Inc.
Jones W. Gary
Lamb Brenda Adele
Makay Christopher L.
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