Food or edible material: processes – compositions – and products – Packaged or wrapped product – Having specific electrical or wave energy feature
Patent
1992-01-13
1993-11-02
Yeung, George
Food or edible material: processes, compositions, and products
Packaged or wrapped product
Having specific electrical or wave energy feature
426113, 426401, 426405, 426407, B65B 5500, B65D 8500
Patent
active
052581918
ABSTRACT:
Easily removable press-on, pry-off closures having movable insert disks in an outer shell are disclosed. Pressing the shell upward to remove it from a container first pries a protrusion inside the shell over a snap rib around the container, then moves the shell upward relative to the disk while the later remains seated on the container, until a disk-lifting projection inside the shell engages the edge of the disk and lifts the disk to break the seal. A tamper evidencing band, if included, is broken before either the shell is pried off or the disk is lifted. The invention can be used in both top load and bottom load embodiments. Also disclosed is a closure with a non-movable disk or integral top and a tamper-evidencing band which is broken by pry-off removal of the closure. Still further, food packages which automatically open when heated in microwave ovens are disclosed. Vacuum-packed food packages having effective head spaces for reducing the times required to retort such packages are also disclosed.
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Bakker et al, "The Wiley Encyclopedia Of Packaging Technology", published by John Wiley & Sons, 1986, pp. 370 and 371.
Lopez, "A Complete Course In Canning", published by the Canning Trade, 10th Edition, 1975, pp. 158-160.
Anchor Hocking Corporation
Yeung George
LandOfFree
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