Package making – Methods – Wrapping contents including cover forming
Patent
1994-05-04
1996-10-22
Johnson, Linda
Package making
Methods
Wrapping contents including cover forming
53463, 53228, 53233, 533873, 533759, 533762, B65B 700, B65B 1100, B65B 5100
Patent
active
055665314
ABSTRACT:
A machine and process for wrapping workpieces, typically napkins. The machine having an infeed conveyor from which workpieces are feed to a poly film supply apparatus, via a conveyor assembly, that distributes a predetermined portion of the poly film supply apparatus around the workpieces to form a horizontally disposed U having a first tail and a second tail of poly film wrap. The conveyor assembly has two conveyor belts that are arranged so that the end of the first conveyor belt meets an end of the second conveyor belt. The second conveyor belt is mounted on a pulley system that allows the end of the second conveyor belt to move away from the end of the first conveyor belt after the workpieces have transferred to the second conveyor belt so that a gap between the two belts is presented. A folder folds down the first tail of poly film wrap. A second folder and a sealer bar come up through the gap and fold up the second tail against the first and seal it in place. A tucking mechanism then tucks in the ends of the poly film wrapping material and the ends are sealed by another sealing mechanism thereby wrapping the package of workpieces.
REFERENCES:
patent: 2486892 (1949-11-01), Sumida
patent: 3618740 (1971-11-01), Taverna
patent: 4624096 (1986-11-01), Nordstrom
patent: 4881357 (1989-11-01), Ballestrazzi et al.
Nordstrom John E.
Rusch Christopher J.
Johnson Linda
Nordstrom Barbara A.
Nordstrom John E.
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