Container for packaging perishable food items
a technology for packaging containers and food items, applied in the field of containers for packaging perishable food items, can solve the problems of wasting a great deal of space in current meat trays in retail display cases, and achieve the effect of minimizing the surface area of the container and high aspect ratio
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example 1
[0047] A blow molded container was made from PET. This container was trimmed to form a container of approximately rectangular cross section, with final dimensions of approximately 2.25×4.5×6 inches, the open end being approximately 2.25×4.5 inches. The aspect ratio of the container was thus 6 / 2.25=2.67. A section of this container was cut out, and measured per ASTM spec D 1003-97 using a Gardner Haze Guard Plus instrument, and the sample had a haze level of 3.1%. Product placed inside this sample was very visible.
[0048] Calculated permeation rates through the blow molded container described above were preformed to estimate the total permeation of oxygen into the container. Published permeation rates for oxygen through PET are 5 cc mil per 100 square inches of area. Thus, for a container having a thickness of 15 mils, the permeation rate of oxygen would then be 0.3 cc / 100 square inches, or approximately 4.65 cc per square meter. The net result would be an approximate permeation rate...
example 2
[0049] Containers as described in Example 1 are loaded with 1 pound of ground beef and stacked on a shelf in a standard 10 foot retail display case; the shelf holds 160 packages.
example 3
[0051] Fresh red meat in the form of ground beef was placed in a container as described in Example 1, and the open end was sealed with a PET lidding film. After the container was placed in a refrigerator maintained at 40° F., the inside of the container developed drops of condensation, which obscured the view of the meat product.
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