Package making – Methods – Skin packaging
Patent
1984-06-29
1986-07-15
Coan, James F.
Package making
Methods
Skin packaging
53116, 53429, 53509, 53536, 53DIG1, B65B 510, B65B 2506
Patent
active
045998493
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a packing machine for packing sliced products such as bacon in a blister package or similar.
The packing machine comprises a lifting device for lifting the sliced bacon bundles fed to the machine. The lifting device comprises two lifting rods extending from a lifting arm. Each lifting rod has several tines which cooperate to support a bacon bundle. The lifting rods are rotatable so as to place the tines in a vertical position, in which they can be introduced below the bacon bundle, and a horizontal position, in which they support the bacon bundle.
A machine which has a small resemblance with the above-mentioned machine is disclosed in the U.S. Pat. No. 3,021,656, which relates to a device for use in filling a container with fruit. Said machine includes interdigiting tines which support the fruit before introducing them in a container.
In the machine according to the invention the bacon bundles are positioned in a blister package which thence are sealed with a vacuum packaging technique well-known in the art.
However, in order to achive a reliable and positive seal of the blister package, it is required that the sealing area is prevented from being contaminated by the grease from the bacon bundle. In several bundles, each bacon slice is a little bit longer than the blister package, which often results in the fact that the sealing area is greased. Thus, it is necessary to arrange for a means which prevents said contamination of the sealing area of the blister package.
It is an object of the present invention to provide a machine for packing bacon bundles or similar in a blister package, in which a too long bacon slice will not grease the sealing area of the blister package.
Another object of the invention is to provide a method of packing a bacon bundle in a blister package, in which the sealing area is prevented from being greasy.
According to the invention there is provided a method of packing a bacon bundle or similar in a blister package to be vacuum sealed, comprising the steps of lifting each bacon bundle by several horizontal and transversally extending tines; bringing at least one rim portion of the bacon bundle to depend if the length of the bacon bundle exceeds the length of the blister package; introducing the bacon bundle in the blister package, the depending portion being folded below the remaining bundle; and vacuum sealing the blister package.
In accordance with the invention there is also provided a machine for packing bacon bundles or similar in a blister package to be vacuum sealed, said machine comprising a lifting arm having at least two lifting rods extending laterally from the lifting arm and being provided with several transversally extending tines, the lifting rods being rotatable in order to place said tines in a horizontal and a vertically depending position. The distance between the outer tines of each lifting rod is slightly smaller than the maximally allowed length of each bacon bundle, whereby the bacon bundle if too long depends over the outer tine in order to be double folded at the position of the bacon bundle in the blister package.
A preferred embodiment of the invention is described in more details below by reference to the appended drawings, in which the only FIGURE is a partially schematic and partially broken perspective view of a machine according to the invention.
The machine comprises an infeed portion having transport belts 2 for feeding a bundle 1 of sliced bacon from a slicer. A sensor 3 monitors the arrival of a bacon bundle and a lifting arm 4 is activated in order to lift the bacon bundle 1 from the belts 2 to a transport pallet 5 positioned immediately beyond the belts 2. The lifting arm 4 is moved along a lifting path 6 be means not shown. The pallet 5 is adapted to the size of the bacon bundle which is supported by several walls 6 of the pallet. Each wall 6 has a plane portion 7 which supports the bacon bundle and two projecting corners 8. The pallets 5 are transported in a circular manner shown by arrows 10 by means of drive
REFERENCES:
patent: 2521577 (1950-09-01), Gannon
patent: 2980541 (1961-04-01), MacDonald
patent: 3475184 (1969-10-01), La Mers et al.
patent: 3671271 (1972-06-01), Miller
patent: 4106260 (1978-08-01), King
patent: 4513559 (1985-04-01), Herrington, Jr.
Coan James F.
Svenska AB Ivers Lee
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