Package making – Methods – With contents treating
Patent
1993-01-08
1994-08-23
Coan, James F.
Package making
Methods
With contents treating
531312, 53411, 53453, 53510, B65B 3100, B65B 6126
Patent
active
053396049
ABSTRACT:
A package made from a thin-walled and flexible packaging foil is filled with granular material and the filled package, placed in a holder with flat sidewalls, is vacuumized internally and closed. According to the invention, a relief element is mounted in a wall of a pair of oppositely disposed sidewalls of the holder. The relief element is pressed against the filled package supported by the sidewalls of the holder for the purpose of providing the package with a relief. The relief element depresses the filling locally without essentially changing the shape of the package. The formation of the relief occurs at a time when the pressure difference between the exterior and the interior of the package is less than the pressure difference prevailing when the closed vacuum package is arranged in an atmospheric environment. Thus, at that time, the filling is softer than the hardness of the filling when it is subject to the pressure difference mentioned last. The relief element remains pressed against the package, at least until the relief is fixed in the package by allowing the pressure difference between the interior and the exterior of the package to increase. Disclosed further is an apparatus for carrying out this method.
REFERENCES:
patent: 2601020 (1952-06-01), Hopp
patent: 4684025 (1987-08-01), Copland et al.
patent: 4685274 (1987-08-01), Garwood
Coan James F.
Sara Lee / DE N.V.
LandOfFree
Method and apparatus for making a vacuum package filled with gra does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for making a vacuum package filled with gra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for making a vacuum package filled with gra will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-494480