Products, methods and apparatus for fresh meat processing and packaging
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embodiment 1
[0441] Referring now to FIG. 31, a preferred packaging tray 3000 with flaps, is shown in a three dimensional drawing. The tray and flaps 3002 can be thermoformed from suitable materials such as polystyrene, polyester and polypropylene in a solid or foamed sheet. The tray 3000 is most preferably thermoformed from an expanded polystyrene sheet of suitable thickness. Tray 3000 includes a base with perforations 3004. Four upwardly extending sides terminate at a common flange 3006. Flaps 3002, 3050, 3052 and 3054 are attached to flange 3006 at the external edge of flange by way of hinges at a hinge lines as shown. Flap 3002 is provided with a profile that mirror images flap 3052, and flap 3050 is provided with a profile that mirror images flap 3054. Flaps are attached to the outer edge of flange rim at hinges as shown, such that flaps 3002, 3050, 3052 and 3054 will fold downwardly and intimately contact outer surfaces of the tray walls. The cross-sectional profile of flaps 3002, 3050, 30...
embodiment 2
[0460] An alternate embodiment of a tray with flaps constructed according to the present invention is shown in FIGS. 37-124. The tray of FIG. 37 includes four flaps as the tray of FIG. 31, with modifications as described herein. FIG. 37 shows the cross-sectional detail of a tray. The tray walls are perforated in sections shown as incision section 3526 and incision section 3528, shown in FIG. 39. Perforations may be in the form of small holes or incisions that extend fully through the tray walls, but may be only provided within the limits of regions shown as incision sections 3526 and 3528.
[0461] Referring now to FIG. 37, a cross-sectional view of finished package 3514 is shown. Finished package 3514 includes a packaging tray 3556 with perishable goods located in tray cavity with an outer cover 3516. The outer cover 3516 includes an envelope of material that completely covers and encloses the packaging tray and the perishable goods and is heat sealed to provide a sealed package. The...
embodiment 3
[0467] Referring now to FIG. 271, another preferred packaging tray with flaps constructed according to the present invention is shown in a three dimensional sketch. The packaging tray of this embodiment as with the packaging trays of previous embodiments is similar in operation, but with an alternate configuration of the channels through which evacuation and flushing is accomplished. The tray with flaps can be thermoformed from suitable plastics materials such as polystyrene, polyester and polypropylene in a solid or foamed sheet. The present packaging tray is preferably thermoformed from expanded polystyrene (EPS) sheet. The EPS sheet may include an “open cell” structure with a surfactant added prior to extrusion of the sheet such that the finished tray will have a capacity to absorb water and other liquids such as “purge” or blood. The EPS sheet may be extruded with a “skin” on what will become the in-side of the finished tray. The “skin” can be arranged so as not to absorb the li...
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