Package making – Closing packages and filled receptacles – By means adapted to engage outturned seam of package cover
Patent
1997-07-25
1998-08-04
Coan, James F.
Package making
Closing packages and filled receptacles
By means adapted to engage outturned seam of package cover
53550, 53 52, 53551, 156358, 156378, B65B 5110
Patent
active
057876819
ABSTRACT:
A sealing condition monitoring apparatus detects in a real-time manner a defect in of sealing due to entry of foreign matter or due to a defect or malfunction of components of a sealing apparatus. There are provided a counter bar disposed at the forward end of a counter jaw for sealing a packaging container into which a liquid food is charged, and a sealing bar disposed at the forward end of a heat sealing jaw to face the counter bar. A packaging material is held between the sealing bar and the counter bar, and a pressing force is applied thereto for sealing. A sheet-shaped pressure sensor is provided on the surface of the counter bar for detecting the pressing force applied to the packaging material at each detection point. Also, there is provided a controller which compares data of the pressing force detected by the sheet-shaped pressure sensor and master data which are previously set to correspond to a pressing force for obtaining proper sealing conditions. The controller detects a defect in sealing by comparing the data for detected pressing force with the master data.
REFERENCES:
patent: 3925139 (1975-12-01), Simmons
patent: 4713047 (1987-12-01), Klinkel
patent: 5051148 (1991-09-01), Resch
patent: 5252171 (1993-10-01), Anderson et al.
patent: 5279098 (1994-01-01), Fukuda
patent: 5322586 (1994-06-01), McLean
patent: 5357731 (1994-10-01), Conway et al.
Patent Abstracts of Japan, vol. 16, No. 216 (P-1356) May 21, 1992.
Otsuka Yuzo
Papina Jan
Coan James F.
Kim Gene L.
Tetra Laval Holdings & Finance S.A.
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