The present disclosure relates to containers, and particularly to containers for storing food. More particularly, the present disclosure relates to a food-storage tray for storing meats and other foods.
A tray in accordance with the present disclosure includes a floor and a side wall arranged to extend along a perimeter edge of the floor. The floor and the side wall cooperate to form a product-storage region.
In illustrative embodiments, the tray floor is formed to include an array of liquid-storage basins and a web coupled to the brim of each of the liquid-storage basins. Each liquid-storage basin is supported in a stationary position by the web to cause the liquid-receiving chamber formed in each liquid-storage basin to communicate with the overlying product-storage region bounded by the tray floor and tray side wall.
In illustrative embodiments, a liquid-storage basin included in a tray floor in accordance with the present disclosure has a relatively small volume, depth, and lateral width selected to enhance the possibility that liquid discharged or excreted by a product kept in the food-storage region will be retained in the liquid-receiving chamber formed in each liquid-storage basin even when the tray is tilted to a steep tilt angle. Each liquid-storage basin is configured to provide means for causing a free surface of liquid stored in its chamber formed in the companion liquid-storage basin to act like a membrane under tension so that such liquid is retained in the chamber whether the tray is level or tilted. A liquid-retention system in accordance with the present disclosure is effective without the inclusion of an absorbent pad on the floor of the tray.
In illustrative embodiments, the web in the tray floor is formed to include an array of basin apertures spread in spaced-apart relation across the length and width of the tray floor. Each basin aperture is associated with one of the liquid-storage basins and arranged to open into the liquid-receiving chamber formed in the associated liquid-storage basin. Each of the basin apertures is bordered by a border edge included in the web. The border edge comprises a series of serially connected web segments (e.g., six) arranged at angles to one another and coupled to the brim of the liquid-storage basin.
Also in illustrative embodiments, the liquid-storage basin has a hexagonal basin floor and a basin side wall that is hexagonal in cross-section. The basin side wall depends from a hexagonal border edge formed in the web of the tray floor to define an aperture opening into the liquid-receiving chamber formed in the liquid-storage basin. While hexagonal basin structures are used in one illustrative embodiment, it is within the scope of the present disclosure to use other curved and multi-sided structures.
Additional features of the present disclosure will become apparent to those skilled in the art upon consideration of illustrative embodiments exemplifying the best mode of carrying out the disclosure as presently perceived.
The detailed description particularly refers to the accompanying figures in which:
Tray 10 includes a tray floor 12 and a tray side wall 14 extending along a perimeter edge of tray floor 12 as suggested in
Tray floor 12 includes a web 22 coupled to a brim of each of the liquid-storage basins 18 and coupled to tray side wall 14 as suggested in
In other illustrative embodiments shown in
In an illustrative embodiment shown in
Web 22 is formed to include a series of basin apertures 22A and each basin aperture 22A opens into one of the chambers 20 formed in a companion liquid-storage basin 18 as suggested in
Tray side wall 14 is coupled to a perimeter edge of web 22 of tray floor 12 and arranged to extend upwardly away from the array of liquid-storage basins 18 coupled to web 22 as suggested in
Web 22 is configured to provide means for supporting food deposited into food-storage region 16 above the liquid-storage basins 18 to cause any liquid 11 discharged from the food to fall by gravity into chambers 20 formed in the underlying liquid-storage basins 18 and for causing a free surface 11F of liquid 11 stored in a chamber 20 of a liquid-storage basin 18 to act like a membrane under tension so that such liquid 11 is retained therein while web 22 is level and while web 22 is inclined with respect to a horizontal plane at an acute angle θ. In an illustrative embodiment, angle θ is about 50° as shown in
Liquid-storage basins 18 are configured and located to receive and retain liquid 11 discharged or otherwise excreted from meat or other food or items stored on web 22 in product-storage region 16 of tray 10 so that such liquids 11 are retained in tray 10 owing at least in part, to surface tension of a free surface 11F of the liquid 11 without the use of any separate absorbent pad on floor 12 of tray 10 as suggested in
Surface tension is a property of liquids that causes the free surface 11F of liquid in each chamber 20 provided in liquid-storage basin 18 to act like a very thin film or membrane under tension. Molecules of the liquid that comprise the free surface are attracted to other molecules of the liquid located inside the liquid and away from the free surface. It has been observed that a free surface 11F of liquid 11 in chamber 20 of an illustrative liquid-storage basin 18 has a characteristic outwardly facing concave shape as suggested in
It has been observed during the development of the present disclosure that a relationship exists between surface tension properties of a liquid retained in a small chamber formed in a liquid-storage basin in accordance with the present disclosure and the relatively small volume, depth, and internal width dimension of the chamber. It has also been observed in illustrative embodiments that serially connected panels 181-186 and/or web segments 221-226 arranged at angles to one another to define a basin aperture 22A in accordance with the present disclosure perform well to retain liquid in the companion chamber. The surface tension of a liquid is often expressed as dynes-per-centimeter.
In an illustrative example, the liquid 11 coming off of meat stored in liquid-storage basins 18 consists essentially of saline. Surface tension data is provided in Table 1 below.
Surface tension by definition is a force existing between the surface molecules, which cause a drop of liquid to spread or to concentrate when placed on a surface. This phenomenon depends on the values of cohesive forces (forces of attraction resulting from the forces that the liquid molecules exert between themselves) and adhesive forces (forces that the surface molecules exert on contact with those of a liquid). It has been shown that a reduction in surface tension increases the penetration capability and its flow into remote areas.
Surface tension was evaluated using a Du Nuoy Tensiometer (DST9005, Nima Technology Ltd., England) and pH was evaluated using a pH meter (Digital pH tester, V.M. Tecknologies, India). The working principle of the Du Nuoy Tensiometer is based on the force required to detach a platinum wire ring from a liquid surface or from the interface between the two liquids. Distilled water was used as zero calibration. All glass equipment from the tensiometer were cleaned by immersion in the cleaning solution and the platinum ring was cleaned by flaming. The measurements were taken at room temperature. Values were recorded and then tabulated. A paired t test was used to analyze the surface tension and pH values. The confidence limit was 95%.
A food-storage tray 10 in accordance with a first embodiment of the present disclosure includes a tray floor 12 and a tray side wall 14 arranged to extend along an edge of tray floor 12 and to cooperate with tray floor 12 to form a product-storage region 16 as shown, for example, in
Each of liquid-storage basins 18 is formed to include chamber means 20 communicating with product-storage region 16 as suggested in
Each liquid-storage basin 18 includes a basin floor 18F and a basin side wall 18W as suggested in
Basin floor 18F has a hexagonal shape and six serially connected side edges 18F1-18F6 in an illustrative embodiment as suggested in
Web 22 is formed to include an array of basin apertures 22A as suggested in
The series of serially connected web segments 221-226 and/or serially connected panels 181-186 cooperate to define surface-tension means for causing a free surface 11F of liquid 11 stored in a companion chamber means 20 to act like a membrane under tension so that such liquid 11 is retained in the companion chamber means 20 while web 22 is level and while web 22 is inclined with respect to a horizontal plane at an acute angle θ (e.g., 50°) as suggested in
In a second embodiment of the present disclosure shown, for example, in
A first group of the micro-bore reservoirs 131 are formed in web 122 and arranged to open into product-storage region 16 formed in the food-storage tray as suggested in
Each of micro-bore reservoirs 131 in the first group is formed in web 122 and includes a reservoir floor 131F located in the tray floor 112 in a position between an inner surface 112I of tray floor 112 and an outer surface 112O of tray floor 112 as suggested in
Each of the micro-bore reservoirs 132 in a first subset of the second group is formed in a basin side wall 118W and includes a reservoir floor 132F located in tray floor 112 between outer surface 112O of tray floor 112 and the basin floor 118F of one of liquid-storage basins 118. Each of the micro-bore reservoirs 132 in the first subset of the second group also includes a reservoir side wall 132W coupled to each of reservoir floor 132F and basin floor 118 and arranged to interconnect reservoir floor 132F and basin floor 118F as suggested in
Each of the micro-bore reservoirs 133 in a second subset of the second group includes a reservoir floor 133F located in tray floor 112. Each of the micro-bore reservoirs 133 in the second group also includes a reservoir side wall 133W coupled to each of reservoir floor 133F and basin side walls 118W and arranged to interconnect reservoir floor 133F and basin side wall 118W as suggested in
In another embodiment of the present disclosure shown, for example, in
Upper layer 212U comprises the inner surface 212I and portions of web 322 and liquid-storage basins 218. Lower layer 212L lies under upper layer 212U and comprises the outer surface 212O and portions of web 322 and liquid-storage basins 218.
A first group of the micro-bore reservoirs 231 is formed in a portion of upper layer 212U included in web 322 and arranged to open into product-storage region 16. A second group of the micro-bore reservoirs 232, 233 is formed in a portion of upper layer 212U included in one of the liquid-storage basins 218 and arranged to open into the chamber 20 of such liquid-storage basin 218.
Each of the micro-bore reservoirs 231 in the first group includes a reservoir floor 231F located in tray floor 212 in a position between inner and outer surfaces 212I, 212O of tray floor 212 and a reservoir side wall 231W extending from the reservoir floor 231F to inner surface 212I of tray floor 212 as suggested in
Each of the micro-bore reservoirs 232 in a first subset of the second group includes a reservoir floor 232F located in tray floor 212 between the outer surface 212O of tray floor 212 and the basin floor 218F of one of liquid-storage basins 218. Each of the micro-bore reservoirs 232 in a first subset of the second group also includes a reservoir side wall 232W coupled to each of the reservoir floor 232F and the basin floor 218F and arranged to interconnect the reservoir floor 232F and the basin floor 218F as suggested in
Each of the micro-bore reservoirs 233 in a second subset of the second group includes a reservoir floor 233F located in tray floor 212. Each of the micro-bore reservoirs 233 in a second subset of the second group also includes a reservoir side wall 233W coupled to each of reservoir floor 233F and basin side wall 218W and arranged to interconnect the reservoir floor 233F and the basin side wall 218W as suggested in
This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Ser. No. 61/445,169, filed Feb. 22, 2011, which is expressly incorporated by reference herein.
Number | Name | Date | Kind |
---|---|---|---|
2974843 | Reifers et al. | Mar 1961 | A |
4195746 | Cottrell | Apr 1980 | A |
4533585 | Holden | Aug 1985 | A |
4935276 | Pawlowski et al. | Jun 1990 | A |
4935282 | Pawlowski et al. | Jun 1990 | A |
5250310 | Fujino et al. | Oct 1993 | A |
6598740 | Wiegers | Jul 2003 | B1 |
Number | Date | Country | |
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20120211497 A1 | Aug 2012 | US |
Number | Date | Country | |
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61445169 | Feb 2011 | US |