Package making – Methods – Forming a cover adjunct or application of a cover adjunct to...
Patent
1993-11-16
1995-07-18
Johnson, Linda B.
Package making
Methods
Forming a cover adjunct or application of a cover adjunct to...
53416, 53434, 53436, 53437, 53512, 53525, 53526, 531365, B65B 3100, B65B 122, B65B 124, B65B 6102
Patent
active
054330610
ABSTRACT:
Apparatus (1) for removing excess air from sealed packages so as to prevent ballooning. The apparatus (1) comprises a first conveyor belt (3) along which the packages move through the apparatus (1). The conveyor (3) Is driven by two rollers (4 and 5) and is also arranged to vibrate, by means of vibrator (2), in order to settle the contents, e.g. rice, in the packages throughout the operation. When a package is in a predetermined position, as determined by a sensor, such as a photoelectric cell (7), the package is punctured by a suitable device such as a spike (8). As the package continues down the conveyor (3), excess air is removed from the package by means of a spring loaded conveyor (19) which is biased against the package. As spring loaded conveyor (19) is pressed against the package, air in the package Is forced out through the hole made by spike (8). Once the excess air in the package is removed, the package reaches a position where a sticker is placed over the hole in the package by a sticker applicator (18), which can be of any known type.
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Hutchinson Gary D.
Ollerenshaw George T.
Johnson Linda B.
Ricegrowers' Co-Operative Limited
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