Package making – Closing packages and filled receptacles – Including provision for pleat of cover overhang
Patent
1994-09-28
1996-10-15
Sipos, John
Package making
Closing packages and filled receptacles
Including provision for pleat of cover overhang
53565, 53DIG2, B65B 5110
Patent
active
055642551
ABSTRACT:
A sealing device is set forth which assists in overcoming the foregoing problems. The sealing device includes a first sealing jaw for sealing a fin of the gabled container. A second sealing jaw is disposed opposite the first sealing jaw. Both the first and second sealing jaws include a generally flat face portion. The second sealing jaw further includes a sealing bar extending from a mid-region of its generally flat face portion lengthwise along at least a portion thereof for sealing the fin of the gabled container with, for example, ultrasonic energy. A ridge extends respectively from each of the generally flat face portions at a position to form a fin base crease at the base of the fin, for example, over the existing weak crease at the base of the fin. The fin base crease assists in preventing separation at the base of the fin below the principal horizontal seal formed by the sealing bar. The sealing bar may extend from the generally flat face portion of the second jaw a distance beyond the degree to which the ridges extend from their respective face portions. The ridges thus may exert less pressure on the fin than does the sealing bar.
REFERENCES:
patent: 3789746 (1974-02-01), Martenson et al.
patent: 3956046 (1976-05-01), Tsuchiya et al.
patent: 4159220 (1979-06-01), Bosche et al.
patent: 4403465 (1983-09-01), Basche
patent: 4406720 (1983-09-01), Wang et al.
patent: 4603535 (1986-08-01), Schultheis
Burkhart Patrick N.
Kim Gene L.
Sipos John
Tetra Laval Holdings & Finance S.A.
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