Package making – Apparatus for forming or partially forming receptacle and... – Forming a pocket – depression – or hollow compartment by...
Patent
1985-03-20
1987-04-14
Sipos, John
Package making
Apparatus for forming or partially forming receptacle and...
Forming a pocket, depression, or hollow compartment by...
47 56, 53122, 53238, 53579, B65B 4704, A01G 902
Patent
active
046568115
ABSTRACT:
A continuous molding machine (10) for forming two chains (55) of soil plugs (50) for use in germinating seeds or otherwise growing plants. A continuous sheet of paper (22) is corrugated to conform to a series of mold elements (14) and a reaction mixture (32) of polymerizing agent and soil slurry is added over the paper to conform to the mold element shape. Another sheet of paper (38) is added over the top of the mixture (32) and the entire assembly is then passed under a series of pressure belts (42, 44, 46) during which time the mixture (32) is cured. The chain of soil plugs (50) which emerges from the pressure belts (42, 44, 46) is encased on both sides by paper (22, 38) and may be cut to provide a pair of separate soil plug chains (55).
REFERENCES:
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patent: 3481283 (1969-12-01), Vogt
patent: 3722137 (1973-03-01), Kesinger et al.
patent: 3739522 (1973-06-01), Greenbaum
patent: 3932980 (1976-01-01), Mizutani et al.
patent: 4213273 (1980-07-01), Dedolph
Gravi-Mechanics Co.
Sipos John
Studebaker Donald R.
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