Method of packaging food product
First Claim
1. A method for packaging a food product comprising the steps of:
- providing a tray with a pair of spaced first and second sealing surfaces that are spaced apart by a depression recessed from at least one of said sealing surfaces;
placing a food product in said tray;
unwinding a pliant first membrane from a web and placing said first membrane on said first sealing surface and over said depression;
sealing said first membrane to said tray on said first sealing surface;
severing said first membrane from said web over said depression between said sealing surfaces while said first membrane is in place on said tray, said depression designed to facilitate the severing of said first membrane from said web in place on said tray during manufacture of the package; and
sealing a pliant second membrane to said tray on said second sealing surface so that said second membrane is over said first membrane and said second membrane is removable from the tray independently of the first membrane and so that said food product is enclosed in said tray covered by said membranes to form a package.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of packaging a food product employing a tray having side walls defining a cavity in an outwardly directed flange extending around the perimeter of the tray, the flange being adapted to receive a pair of membranes to enclose the tray. The lower membrane is the more permeable of the two. It may be attached to a first surface of the flange. The second membrane is attached to a second outer surface of the flange without direct connection except through the tray to the more permeable membrane. The two connection surfaces may be separated by a depression to facilitate the cutting away of the material forming the more permeable membrane in a continuous manufacturing process. With the less permeable membrane in place, a desired gaseous environment may be maintained within the package. When it is desired to change the gaseous environment, the upper less permeable membrane may be peeled away allowing gaseous communication through the lower more permeable membrane.
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Citations
6 Claims
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1. A method for packaging a food product comprising the steps of:
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providing a tray with a pair of spaced first and second sealing surfaces that are spaced apart by a depression recessed from at least one of said sealing surfaces; placing a food product in said tray; unwinding a pliant first membrane from a web and placing said first membrane on said first sealing surface and over said depression; sealing said first membrane to said tray on said first sealing surface; severing said first membrane from said web over said depression between said sealing surfaces while said first membrane is in place on said tray, said depression designed to facilitate the severing of said first membrane from said web in place on said tray during manufacture of the package; and sealing a pliant second membrane to said tray on said second sealing surface so that said second membrane is over said first membrane and said second membrane is removable from the tray independently of the first membrane and so that said food product is enclosed in said tray covered by said membranes to form a package. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification