Method and device for sealing the mouth of a pouch

Details Method and device for sealing the mouth of a pouch Method and device for sealing the mouth of a pouch

1988-07-15

1989-09-19

Spruill, Robert L.

Package making

Methods

Closing package or filled receptacle

53 76, 53373, 156 731, 1565801, B65B 706, B65B 5122

Patent

active

048669148

ABSTRACT:
A pouch made of a heat-fusible material is sealed at its mouth while being transferred on a conveyor. A vibrator provided at one side of the track of the conveyor is pressed against the mouth of the pouch for vibrative heating in response to a signal from a sensor and is moved away from the mouth in response to a sensor signal. The sensor detects the coming and passing of the pouch at and through the sealing station. The pouch preferably has an open mouth with a presealed leading edge which ensures that the entire mouth is completely sealed. The provision of the presealed leading edge along with the vibrator for vibrative heat-sealing ensures that a good seal is produced even if powder or fat has adhered to the sealing surface.

REFERENCES:
patent: 2676444 (1954-04-01), Gaubert
patent: 3200558 (1962-09-01), Adams et al.
patent: 3242029 (1966-03-01), Deans
patent: 3886713 (1975-06-01), Mitchell et al.
patent: 4159220 (1979-06-01), Bosche et al.
patent: 4534818 (1985-08-01), Kreager et al.
patent: 4734142 (1988-03-01), Creswell
patent: 4767492 (1988-08-01), Fukusima et al.

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