Package making – Methods – Closing package or filled receptacle
Reexamination Certificate
1998-06-05
2001-10-23
Gerrity, Stephen F. (Department: 3721)
Package making
Methods
Closing package or filled receptacle
C053S329500, C083S016000, C083S171000
Reexamination Certificate
active
06305149
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to methods for packaging food products. In one embodiment, the packaged product may be maintained in one condition under certain circumstances and then converted to another condition. For example, during transportation the food package might maintain an inert gaseous atmosphere and then, when the package reaches a supermarket or other retail outlet, the food package will permit exposure of the food product to the ambient atmosphere. While a wide variety of food products can be packaged in accordance with the teachings of this invention, it is particularly advantageous in connection with the packaging of meat in a modified atmosphere package such that the meat may be transported in a relatively inert atmosphere and then caused to bloom when it reaches a retail outlet by exposure to oxygen.
BACKGROUND OF THE INVENTION
Historically, meat products have been butchered and packaged in each supermarket or other retail outlet. It has long been recognized that this arrangement is extremely inefficient and expensive. Instead, it would be preferable to permit the meat to be butchered and packaged at an efficient facility which benefits from economies of scale and thereafter to be shipped to individual supermarkets or other retail outlets.
In the past, this desirable goal has not been achievable because most consumers prefer to buy meat which is red in color as a result of exposure to oxygen. However, the meat maintains its red color for only one or two days. Thereafter, if the meat was butchered and packaged in one location and then shipped to another location for eventual sale, by the time the package reached the retail outlet the meat would have undergone the transformation to the purple color and would be effectively unsalable.
To overcome these problems, there have been a number of efforts to maintain the food product in a first atmosphere during shipping and a second atmosphere when the meat product is ready for retail sale. Therefore, it is highly desirable to provide a package that would permit remote meat preparation and subsequent sale after the passage of more than a couple of days. It is equally desirable to have an apparatus and method for packaging such products in an efficient and cost-effective way despite the fact that most consumers would prefer not to invest a large amount of money in elaborate packages.
Thus, it should be apparent that there is a continuing need to solve the longstanding problem of providing a package which permits meat or other food products to be packaged at one location and then to be sold sometime later under different conditions. One approach to solving these problems which has shown considerable commercial promise is disclosed in U.S. Pat. No. 5,348,752 to Michael P. Gorlich. In this patent, a depression is provided in the tray which allows the cutting blade to cut plastic film from a web in place on a tray without damaging the packaging.
Particular problems may arise in packaging meat, such as ground beef, in a modified atmosphere package. Because of the process used to grind meat, air is entrained in the product. The air is released to the package, upsetting the predetermined atmosphere. Particularly where very low oxygen contents are otherwise achievable inside the packaging, the release of entrained oxygen from ground meat once inside the package may reduce the modified packaging efficacy.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, a method of packaging a meat product in a low oxygen atmosphere package includes loading a tray with meat at one station. The tray is transferred to a subsequent station and trapped air is removed from the meat. The tray is transferred to a subsequent station and covered.
In accordance with another aspect, a method of packaging ground meat includes evacuating entrained air from said ground meat held in a tray. After the entrained air is evacuated from the ground meat, the air surrounding the meat in the tray is evacuated. The tray is sealingly covered with a plastic film.
REFERENCES:
patent: 3240851 (1966-03-01), Scalora
patent: 3583125 (1971-06-01), Vermeulen
patent: 3645825 (1972-02-01), Gaunt et al.
patent: 3685251 (1972-08-01), Mahaffy et al.
patent: 3874975 (1975-04-01), Lagain
patent: 4018117 (1977-04-01), Patterson
patent: 4243366 (1981-01-01), Lefevre et al.
patent: 4396449 (1983-08-01), Tumminia
patent: 4819413 (1989-04-01), Mancini
patent: 4860621 (1989-08-01), Totani
patent: 5074951 (1991-12-01), Banco et al.
patent: 5308311 (1994-05-01), Eggers et al.
patent: 5429022 (1995-07-01), Nakayama
patent: 5718101 (1998-02-01), Noel et al.
Gorlich Michael P.
McPherson, Jr. Robert F.
Gerrity Stephen F.
Hovey Williams Timmons & Collins
Marlen Research Corporation
LandOfFree
Method and apparatus for packaging meat 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 packaging meat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for packaging meat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2602871