JP2022504807A - Stackable thermoplastic egg trays and egg packaging cartons - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stackable thermoplastic egg tray (100) and an egg packaging carton (802). More specifically, the present invention relates to an egg package that allows stacking and palletizing egg packaging cartons, i.e. an egg package that allows another package to be stacked on top of a package on a pallet, making it easy to move to another location. Is.
One of the advantages of an improved egg packaging carton structure is that it stacks in a stable arrangement while further protecting the eggs, physically moving a large number of stacked cartons on a pallet. Occasionally, the filled carton should be able to be transported without the risk of movement or collapse that could cause it to fall off the pallet, fall out of the stacked position, or cause damage to the eggs. Another advantage of the improved egg packaging carton is that it provides ventilation by passing air through the entire egg packaging carton through air spaces and gaps to keep the eggs fresh for a long time.
[Selection diagram] Fig. 1

Description

The present invention relates to stackable thermoplastic egg trays and egg packaging cartons. More specifically, the present invention relates to an egg package that allows stacking and palletizing egg packaging cartons, i.e. an egg package that allows another package to be stacked on top of a package on a pallet, making it easy to move to another location. Is.

Large quantities of eggs and similar products are becoming more and more popular with consumers, and the amount of eggs sold in traditional grocery stores and other retail stores is increasing, requiring large packages to hold them. Has been done. Therefore, in order to maintain high competitiveness, grocery stores and warehouse-type retailers are required to increase the package size for eggs and other agricultural products (for example, egg tray containers containing 18 or more eggs). , There is no large floor area for storing and / or displaying it. Many stores use molded fiber trays (known as filler flats) and sleeves with a corrugated single side (cylindrical case) to accommodate large quantities of merchandise. Retailers stack multiple egg trays that may be unstable and unsafe, even if they are not properly stacked. In addition, conventional egg packaging systems are not nested with each other, which may require a large store area to display and store egg trays.

U.S. Pat. No. 6,276,531

US Pat. No. 6,276,531, which is fully incorporated herein by reference, discloses a nestable egg tray packaging system (assembly) of molded fiber, including a clear lid. This transparent lid contains an upwardly extending conical element and a downwardly shaped edge with a notch that helps secure the lid to the filler flat. A shrink film band is placed around the filler flat with a lid, and the lid is fixed during handling to make the finished product "tamper evidence (prevention of unauthorized opening)". This transparent lid stabilizes the tray laterally when stacking and avoids increased costs due to broken or cracked eggs. Although the nestable egg tray packaging system disclosed in this patent has made significant progress in the field of packaging systems, it provides a nestable egg tray packing system for stackable molded fibers. When stacked, the eggs in your pocket will easily break during use. This is because there is no air space between the lid and the base of each egg tray packaging system, and the load of the eggs in the top packaging system is directly applied to the eggs in the bottom packaging system. Therefore, the risk of breakage or instability is not significantly reduced. In addition, the eggs placed in this patented packaging system are so close together that it is unlikely that there will be air ventilation between the eggs. Therefore, heat builds up in the packaging system due to humid weather, which eventually causes the eggs to rot.

The plastic egg carton has a flexible wall between the cell pockets to protect the eggs and keep them out of the adjacent cell pockets. However, when handling, for example, when stacking multiple cases (a collection of stacked egg cartons) on a pallet of a grocery store, stacking 5 to 6 cases on a pallet, and / or throwing them into a pallet or each other. During the collision, the (egg) carton will be subject to considerable pressure and lateral impact. Therefore, the egg may come out from the cell pocket in which it is placed, and may come into contact with a strong impact from the side surface.

In view of the above drawbacks, it is an object of the present invention to provide a new design for egg trays and packaging of eggs that contributes to the food warehouse environment and / or a package that further protects fragile foods stored in the package. do. The improved egg packaging carton structure of the present invention allows better protection of eggs in the face of adverse mechanical stresses and environmental changes commonly occurring during packaging, transportation and storage.

The present invention relates to a plurality of egg receiving compartments having non-planar sides so as to at least partially match the outer surface shape of the egg (the plurality of compartments are arranged in parallel in at least two rows, and each egg receiving compartment is each. Provides a stackable thermoplastic egg tray with an egg support surface that supports the egg and has a continuous, substantially elliptical surface that is similar in shape to the elliptical surface of the egg. do.
The surface of a continuous substantially ellipse has a continuous circular region and a plurality of lower tongues extending downward from the continuous circular region to the flare surface (extending outward spreading shape), and this continuous circular region. And the lower tongue are both formed within the egg receiving compartment. The surface of the continuous substantially ellipse also has a plurality of upper tongues extending upward from the continuous circular area along the inclined side wall of the column from the egg receiving compartment. Each pillar is provided with a plurality of inclined side walls so that air can pass through each egg receiving compartment, and a plurality of grooves are provided between the egg receiving compartments.
The egg trays of the present invention are further the same at the bottom to limit the movement of the receiving means located at the top of the pillar to receive the same type of egg tray at the top and the egg trays in the stackable arrangement. It comprises a projection means (protruding from) from the bottom of the egg receiving compartment for engaging the receiving means of another egg tray of the mold.

In another embodiment of the invention, the stackable thermoplastic egg packaging carton comprises a lid and an egg tray.
The lid has a lid surface, a plurality of conical elements extending downward from the lid surface, and an edge surrounding the periphery and extending downward from the lid surface.
The egg tray is a plurality of egg receiving compartments having non-planar sides so as to at least partially match the outer surface shape of the egg (the plurality of compartments are arranged in parallel in at least two rows, and each egg receiving compartment is each. Has a plurality of columns with an upper part) and an egg support surface that supports the egg and has a continuous substantially elliptical surface that is similar in shape to the elliptical surface of the egg.
The surface of a continuous substantially ellipse has a continuous circular region and a plurality of lower tongues extending downward from the continuous circular region to the flared surface, and the continuous circular region and the lower tongue are the eggs. Formed in the receiving compartment. The surface of the continuous substantially ellipse also has a plurality of upper tongues extending upward from the continuous circular area along the side wall of the column from the egg receiving compartment. Each pillar is provided with a plurality of inclined side walls so that air can pass through each egg receiving compartment, and a plurality of grooves are provided between the egg receiving compartments.
The egg trays of the present invention further have a receiving means located at the top of the pillar to receive the same type of lid at the top and the same type at the bottom to limit the movement of the egg trays in a stackable arrangement. It is provided with a projecting means from the bottom of the egg receiving compartment for engaging with the receiving means of the lid of another egg tray.
The conical element extending downward from the lid surface is aligned and placed with the egg tray pillar in a predetermined direction such that air space is secured between the lid and the egg tray in each egg receiving compartment. ..

A method of stacking and arranging a plurality of thermoplastic egg packaging cartons, each of which has a lid and an egg tray.
The lid has a lid surface, a plurality of conical elements extending downward from the lid surface, and an edge surrounding the periphery and extending downward from the lid surface.
The egg tray is a plurality of egg receiving compartments having non-planar sides so as to at least partially match the outer surface shape of the egg (the plurality of compartments are arranged in parallel in at least two rows, and each said egg receiving compartment is Each has a plurality of pillars with an upper part). Each pillar is provided with a plurality of inclined side walls so that air can pass through each egg receiving compartment, and a plurality of grooves are provided between the egg receiving compartments.
The egg trays of the present invention further have a receiving means located at the top of the pillar to receive the same type of lid at the top and the same type at the bottom to limit the movement of the egg trays in a stackable arrangement. It is provided with a projecting means from the bottom of the egg receiving compartment for engaging with the receiving means of the lid of another egg tray.
The method of the present invention
Steps to provide a first egg packaging carton and a second egg packaging carton,
Including the step of placing the first egg packaging carton on the second egg packaging carton and partially nested within the second egg packaging caron, where the eggs are received in the tray of the first egg packaging carton. The compartment is placed between the conical elements of the lid of the second egg packaging carton,
It further comprises repeating the steps of stacking and arranging egg packaging cartons.

One of the advantages of the improved egg packaging carton structure is that it can be stacked in a stable arrangement while further protecting the eggs, when many stacked cartons are physically moved on a pallet. To allow the (egg) filled carton to be transported without the risk of movement or collapse that could fall off the pallet, fall out of the stacked position, or cause damage to the egg.
Another advantage of the improved egg packaging carton is that it provides ventilation by passing air through the entire egg packaging carton through air spaces and gaps to keep the eggs fresh for a long period of time.

Further advantages of the present system and its use according to the present invention can be understood from the specification and the accompanying drawings. The above-mentioned features according to the present invention and the features described below can be used individually or in any combination. The examples described are not considered as a complete enumeration, but as an exemplary feature. The present invention is shown in the drawings and will be described in detail with reference to examples.

The accompanying drawings, which are incorporated herein by reference and are in part thereof, illustrate examples of the present invention, which, along with the description thereof, are useful for explaining the principles of the present invention.

A perspective view of a stackable thermoplastic egg tray according to the present invention is shown. A top view of a stackable thermoplastic egg tray according to the present invention is shown. The isometric view of the bottom view of the stackable thermoplastic egg tray according to the present invention is shown. The bottom view of the stackable thermoplastic egg tray according to this invention is shown. A front view of a stackable thermoplastic egg tray according to the present invention is shown. A back view of a stackable thermoplastic egg tray according to the present invention is shown. FIG. 3 shows a perspective view of a lid of a stackable thermoplastic egg packaging carton according to the present invention. FIG. 3 shows a perspective view of a lid and an egg tray in an open position (with the lid open) of a stackable thermoplastic egg packaging carton according to the present invention. FIG. 3 shows a perspective view of a lid and an egg tray in an open position and a closed position (with the lid closed) of a stackable thermoplastic egg packaging carton according to the present invention. Shown is a close-up of an egg housed in an egg receiving compartment of a lid and egg tray in a closed position of a stackable thermoplastic egg packaging carton according to the present invention. FIG. 3 shows a top view of a stackable thermoplastic egg packaging carton according to the present invention in the open position where the lid is hinged to the egg tray. FIG. 6 shows a bottom view of a stackable thermoplastic egg packaging carton according to the present invention in the open position where the lid is hinged to the egg tray. FIG. 3 shows perspective views of stackable thermoplastic egg packaging cartons according to the present invention in open and closed positions where the lid is hinged to the egg tray.

The present invention will be described in detail with reference to the accompanying drawings. Unless contextually requires otherwise, throughout the specification and claims below, the terms "comprise" and its variants such as "comprises" and "comprising" are open-ended "including but in this". It is interpreted to include "not limited". References to "one example" or "example" herein are meant to include in at least one embodiment a particular function, structure, or feature described in connection with an embodiment. .. Therefore, not all of the phrases "in one embodiment" or "in an embodiment" described in various places herein refer to the same embodiment. Furthermore, a particular function, structure, or feature may be incorporated into any suitable method of one or more embodiments. With respect to the use of plurals and / or singular forms herein, one of ordinary skill in the art will make a substitution (interpretation) from plural to singular and / or from singular to plural, substantially to suit the context and / or its use. It is possible. Various single / plural substitutions may be explicitly described herein for clarity. One of ordinary skill in the art further presents, in any of the specifications, claims, or drawings, effectively two or more other terms, where the dichotomy and / or phrase is one of the terms, one of the terms. I understand that it must be understood to anticipate the possibility of including one or both terms. For example, the phrase "A or B" is understood to include the possibility of "A" or "B" or "A and B".

Terms, "left", "right", "top", "bottom", "front", "rear", "side", "height", "length", "width", "top" " "Bottom", "inside", "outside", "inside", "outside", etc., as used herein, are merely to describe the reference and for a particular direction or configuration. The present invention is not limited to this. Moreover, terms such as, for example, "first", "second", "third", etc., as disclosed herein, simply refer to one of many parts, components and / or positions. It is only specified, and does not limit the present invention to a specific configuration or direction.

FIG. 1 shows a perspective view of a stackable thermoplastic egg tray (100) according to the present invention. The stackable thermoplastic egg tray (100) of the present invention has a plurality of egg receiving compartments (102) having non-planar sides so as to at least partially match the outer surface shape of the egg. Sections (102) are arranged in parallel in at least two rows. Each egg receiving compartment (102) has a plurality of pillars (104), and each pillar (104) has an upper portion (106). Depending on the type (size) of the egg, the height of each pillar is 85 mm to 100 mm from the base of the egg receiving compartment (102), preferably 91 mm.

FIG. 2 shows a top view of a stackable thermoplastic egg tray (100) according to the present invention. An egg support surface (202) for supporting an egg and having a continuous substantially elliptical surface similar in shape to the elliptical surface of the egg.

FIG. 3 shows an isometric view of the rear view of the stackable thermoplastic egg tray (100) according to the present invention. The surface of the continuous substantially ellipse has a continuous circular region and a plurality of lower tongue portions extending downward from the continuous circular region to the flare surface (302). A plurality of indentations (306) are provided at the bottom edge of the stackable thermoplastic egg tray (100).

FIG. 4 shows a bottom view of a stackable thermoplastic egg tray according to the present invention. The continuous circular area and the lower tongue are formed in the egg receiving compartment (102). Multiple finger slots on either side of the edge of the stackable thermoplastic egg tray (100) to provide sufficient space for the user's fingers to move from the egg tray when in a stackable position. (402) is provided.

FIG. 5 shows a front view of a stackable thermoplastic egg tray (100) according to the present invention. The surface of the continuous substantially ellipse also has a plurality of upper tongues extending upward from the continuous circular region along the inclined side wall (502) of the column (504) from the egg receiving compartment. The egg receiving compartment (102) and the pillar (504) are arranged in a regularly orthogonal pattern, and each egg receiving compartment (102) is surrounded by four pillars (504). The underside of each egg receiving compartment (102) maximizes the stability and safety of the stackable thermoplastic egg tray (100) and breaks within each stackable thermoplastic egg tray (100). Designed to reduce the possibility.

FIG. 6 shows a rear view of a stackable thermoplastic egg tray according to the present invention. Each pillar (604) is provided with a plurality of inclined side walls (602) so that air can pass through each egg receiving compartment, and a plurality of grooves (606) are provided between the egg receiving compartments. Receiving means (108) located at the top (106) of the pillar (104) to receive the same type of egg tray above, and below to limit the movement of the egg trays in a stackable arrangement. A projection means (304) from the bottom of the egg receiving compartment for engaging the receiving means of another egg tray of the same type. The receiving means may be any type of concave surface as long as it is sufficiently suitable for receiving the protruding means, and the protruding means may be any type of protrusion from the bottom of the egg receiving compartment of the engaging or locking mechanism. May be. Egg trays can be made from polyethylene terephthalate (PET) sheet material by thermoforming, injection (molding), or other equivalent steps. In other embodiments, the egg carton is made by other materials (eg, other suitable polymeric materials) and / or other manufacturing processes. In a preferred embodiment, the particular spring constants and configurations of the egg trays disclosed herein indicate that recyclable plastic materials are available. The wall thickness of the PET case of the embodiment considered is 0.5 mm to 1.0 mm, but this thickness can vary, for example when forming an egg tray from a sheet.

The egg tray of the present invention consists of a 3 × 4, 4 × 5, 5 × 6 matrix of egg receiving compartments (102). However, according to the present invention, the size of the egg tray system may vary so as to provide a different number of eggs in each tray system (provided with a corresponding number of expansions). The egg trays of the present invention may be designed to hold, for example, 4, 6, 12, 18, 20, 24, or 36 conical extensions and a corresponding number of eggs. There are different configurations for each egg tray system of different size for different grades of eggs (eg AA, A, B, C). For example, an egg tray system holding 12 eggs may be configured with 3 rows of 4 eggs or 2 rows of 6 eggs. The egg tray of the present invention can withstand a weight of at least 40 kg, in which at least 20 egg trays containing eggs are stacked in an egg receiving compartment of a 4 × 6 matrix.

FIG. 7 shows a perspective view of the lid of a stackable thermoplastic egg packaging carton according to the present invention. The lid of the present invention has a lid surface, a plurality of conical elements (702) extending downward from the lid surface (704), and an edge (706) surrounding the periphery and extending downward from the lid surface (704). ..

FIG. 8 shows a perspective view of a lid (804) and an egg tray (806) in an open position (with the lid open) of a stackable thermoplastic egg packaging carton (802) according to the present invention. A stackable thermoplastic egg packaging carton (802) has a lid surface and a lid having a plurality of conical elements extending downward from the lid surface and an edge (808) surrounding the periphery and extending downward from the lid surface. (804), and an egg tray comprising a plurality of egg receiving compartments (810) having non-planar sides to at least partially match the outer surface shape of the egg. The plurality of compartments (810) are arranged in parallel in at least two rows. Each egg receiving compartment (810) has a plurality of pillars (812), each of which has an upper part (814). Each pillar is provided with a plurality of inclined side walls (816) so that air can pass through each egg receiving compartment (810), and a plurality of grooves (818) are provided between the egg receiving compartments (810). ..

FIG. 9 shows a perspective view of a lid and an egg tray in an open position (with a lid open) and a closed position (with a lid closed) of a stackable thermoplastic egg packaging carton (902) according to the present invention.

FIG. 10 shows an enlarged view of the eggs contained in the egg receiving compartment of the lid (1012) and egg tray (1014) in the closed position of the stackable thermoplastic egg packaging carton (902) according to the present invention. Another of the same type below to limit the movement of the receiving means (1016) located at the top of the pillar to receive the same type of lid (1012) above and the egg trays in a stackable arrangement. There is a protruding means (1018) from the bottom of the egg receiving compartment for engaging with the receiving means of the egg tray lid. The receiving means may be any type of concave surface as long as it is sufficiently suitable for receiving the protruding means, and the protruding means may be any type of protrusion from the bottom of the egg receiving compartment of the engaging or locking mechanism. May be. Further, the conical element extending downward from the lid surface is aligned with the column of the egg tray in a predetermined direction so as to secure an air space (1020) between the lid and the egg tray in each egg receiving compartment. Be placed. Further, an air space (1022) is provided as a gap between the egg to be housed and the bottom of the egg receiving compartment. This air space (1020, 1022), preferably 10 mm to 25 mm according to the present invention, is important as it allows air to pass through all egg trays for ventilation and prolonging the freshness retention period of the eggs.

Eggs are sold by weight, but must be housed in egg cartons due to variations in egg size. While each egg in a constant size (eg, 4, 6, 8 eggs, etc.) egg carton is important, the egg carton of the present invention also considers the overall spacing between eggs in the carton. Regardless of the size or adjustment of the carton, the eggs should be arranged in a grid, taking into account all the shapes of the carton. All sidewalls and all other design characteristics shall be adjusted to keep distance on the same grid within the individual carton and all other nested cartons. This allows general purpose stacked nesting characteristics to fully function in this carton system.

To stack stackable thermoplastic egg packaging cartons, rotate the tray packaging carton about 90 degrees, place the tray of the egg packaging carton on top of another tray packaging carton, and another tray packaging carton underneath. By placing it partially nested within, the egg tray is placed between the (conical) elements of the lid of the other egg packaging carton underneath. The egg carton of the present invention utilizes the natural strength of the egg and improves the overall top load characteristic of a single egg carton, especially when multiple cartons are combined as provided by the system. Adds strength to multiple egg cartons of the cube. Thus, the egg carton of the present invention disclosed for safely placing and maintaining an egg in an egg carton utilizes the natural shape and strength of the egg.

In another embodiment as shown in FIGS. 11 and 12, the lid (1102) is hinged (1104) to the egg tray (1106) at one end and the locking mechanism (1108) at the other end. 1110) is provided between the lid and the egg tray. Since the label can be glued to the hinge side or attached to the bottom of the carton, the lid (1302) can be opened like a normal egg carton, as shown in FIG. The stackable thermoplastic egg packaging carton locking mechanism (1108, 1110) has at least one retaining protrusion (1108) extending from at least one edge of the lid (1102) on the corresponding surface of the egg tray. At least one opening (1110) is provided for locking engagement. Further, in FIG. 9, in order to display the product information (904), two opposite side surfaces without a hinge and a locking mechanism are provided on the lid. In another embodiment, the invention facilitates the alignment and stacking of multiple cartons for transport, the lid of the invention comprises many features and is consumed from both the top and sides for printing or labeling. Provides multiple areas that can be viewed by a person.

In operation (a method of stacking multiple thermoplastic egg packaging cartons), an egg packaging carton with a lid and an egg tray begins with providing a first egg packaging carton and a second egg packaging carton, respectively. Then, the first egg packaging carton is partially nested on top of the second egg packaging caron and within the second egg packaging carton, and the egg receiving compartment of the tray of the first egg packaging carton is Placed between the conical elements of the lid of the second egg packaging carton. Finally, the steps of stacking and arranging this egg packaging carton are repeated.

Cartons are typically integrally molded from a single piece of plastic material formed by a conventional molding process into a final product with the components described herein. For example, a plastic sheet is pressed between the female or male molds to form a molded lid and base, and then the rest of the sheet is removed (prepared) to form a coalesced carton. The plastic can be foamed or non-foamed (eg, a solid plastic sheet), for example a clear solid plastic sheet of polyester (eg, unused or recycled polyethylene terephthalate (PET)), or a mixture of polyester or polystyrene. .. Techniques for forming PET are used to form reinforcing materials with even higher strength due to ridge making, stanchions, angles, deformations, thickness deformations and the like.

The detailed description and examples described above merely provide preferred embodiments. They are by no means an exclusive description of the concepts of the invention disclosed herein. Those skilled in the art will recognize that certain aspects of the embodiments of the invention can be modified or implemented by other known means.

Claims (13)

A stackable thermoplastic egg tray (100), wherein the egg tray is
The egg receiving compartments (102) are provided with a plurality of egg receiving compartments (102) having non-planar sides so as to at least partially match the outer surface shape of the egg, and the plurality of said egg receiving compartments (102) are arranged in parallel in at least two rows. The egg receiving compartment (102) has a plurality of columns (104), each having an upper portion (106).
It comprises an egg support surface (202) that supports the egg and has a continuous, substantially elliptical surface that is close in shape to the elliptical surface of the egg.
The surface of the continuous substantially ellipse has a continuous circular region and a plurality of lower tongue portions extending downward from the continuous circular region to the flare surface, and the continuous circular region and the lower tongue portion are formed. , Both formed in the egg receiving compartment,
The surface of the continuous substantially ellipse also has a plurality of upper tongues extending upward from the continuous circular region along the inclined side wall of the pillar (104) from the egg receiving compartment (102).
A plurality of inclined side walls (602) are provided in each of the pillars (604) so that air can pass through each of the egg receiving compartments (102), and a plurality of grooves are provided between the egg receiving compartments (102). (606) is provided,
Movement of the receiving means (108) located at the top (106) of the column (104) to receive the egg tray (100) of the same type above and the egg tray (100) in a stackable arrangement. With the protruding means (1018) from the bottom of the egg receiving compartment (102) to engage with the receiving means (108) of another egg tray (100) of the same type below to limit. An egg tray, characterized by being equipped with. The egg tray according to claim 1, wherein a plurality of recesses (306) are provided at the bottom edge of the stackable thermoplastic egg tray (100). The egg receiving compartment (102) and the pillar (104) are regularly arranged in an orthogonal pattern.
The underside of each stackable thermoplastic egg tray (102) maximizes the stability and safety of the stackable thermoplastic egg tray (100) and breaks within each stackable thermoplastic egg tray (100). The egg tray according to claim 1, wherein the egg tray is provided to reduce the number of eggs to be grown. On both sides of the edge of the stackable thermoplastic egg tray (100) to ensure sufficient space for the user's fingers to move from the stackable egg tray (100) when in a stackable position. 1 is an egg tray according to claim 1, wherein a plurality of finger slots (402) are provided. An air space is provided as a gap between the contained egg and the bottom of the egg receiving compartment (102).
The air space is provided to allow air to pass through the stackable thermoplastic egg tray (100) through the air space and the gaps for ventilation and extending the freshness retention period of the eggs. The egg tray according to claim 1, wherein the egg tray is provided. A stackable thermoplastic egg packaging carton (802), said egg packaging carton (802) comprising a lid and an egg tray.
The lid has a lid surface (704), a plurality of conical elements (702) extending downward from the lid surface (704), and an edge (706) surrounding the periphery and extending downward from the lid surface (704). And have
The egg tray
It comprises a plurality of egg receiving compartments (810) having non-planar sides to at least partially match the outer surface shape of the egg, the plurality of said compartments (810) being arranged in parallel in at least two rows, each said egg. The receiving compartment (810) has a plurality of pillars (812), each having an upper portion (814).
It has an egg support surface that supports the egg and has a continuous, substantially elliptical surface that is close in shape to the elliptical surface of the egg.
The surface of the continuous substantially ellipse has a continuous circular region and a plurality of lower tongue portions extending downward from the continuous circular region to the flare surface, and the continuous circular region and the lower tongue portion. Is formed in the egg receiving compartment (810) and
The surface of the continuous substantially ellipse also has a plurality of upper tongues extending upward from the continuous circular region along the sidewall of the column (812) from the egg receiving compartment (810).
A plurality of inclined side walls (816) are provided in each of the pillars (812) so that air can pass through each of the egg receiving compartments (810), and a plurality of grooves are provided between the egg receiving compartments (810). (818) is provided,
The receiving means (1016) located above the pillar (812) to receive the same type of lid above and the same below to limit the movement of the egg tray in a stackable arrangement. It comprises a projection means (1018) from the bottom of the egg receiving compartment (810) for engaging with the receiving means (1016) of the lid of another egg tray of the mold.
The conical element (702) extending downward from the lid surface (704) is such that an air space (1022) is secured between the lid and the egg tray in each egg receiving compartment (810). An egg packaging carton, characterized in that the egg packaging carton is aligned and arranged with the pillar (812) of the egg tray in a predetermined direction. The tray packaging carton (802) is rotated about 90 degrees and the tray of the egg packaging carton (802) is placed on top of and below the other tray packaging carton (802). By arranging it partially nested within, the egg tray is characterized by being placed between the element and the element (702) on the lid of another underlying egg packaging carton (802). The egg packaging carton according to claim 6. The lid is hinged to the egg tray at one end and
The egg packaging carton according to claim 6, wherein the locking mechanism is provided between the lid and the egg tray at another end. The locking mechanism (1108, 1110) engages at least one holding protrusion extending from at least one edge of the lid with the at least one opening on the corresponding surface of the egg tray. The egg packaging carton according to claim 8, wherein the egg packaging carton is provided for the purpose. The egg packaging carton according to claim 8, wherein two opposing sides without a hinge and the locking mechanism (1108, 1110) are provided on the lid to display product information (904). An air space (1022) is provided as a gap between the contained egg and the bottom of the egg receiving compartment (802).
The air space (1022) allows air to flow into the stackable thermoplastic egg tray (100) through the air space (1022) and the gaps for ventilation and prolonging the freshness retention period of the eggs. The egg packaging carton according to claim 6, characterized in that it is provided for passing. A method of stacking and arranging a plurality of thermoplastic egg packaging cartons, each of which has a lid and an egg tray.
The lid has a lid surface (704), a plurality of conical elements (702) extending downward from the lid surface (704), and an edge (706) surrounding the periphery and extending downward from the lid surface (704). And have
The egg tray comprises a plurality of egg receiving compartments (810) having non-planar sides to at least partially match the outer surface shape of the egg, and the plurality of compartments (810) are arranged in parallel in at least two rows. Being done
Each said egg receiving compartment (810) has a plurality of pillars (812), each having an upper portion (814).
Each of the pillars is provided with a plurality of inclined side walls (816) so that air can pass through each of the egg receiving compartments (810), and a plurality of grooves (818) are provided between the egg receiving compartments (810). Is provided,
A distinction between the receiving means (1016) located above the pillar to receive the same type of lid above and the same type below to limit the movement of the egg trays in a stackable arrangement. Egg tray lid is provided with a projection means (1018) from the bottom of the egg receiving compartment (810) for engaging with the receiving means (1016).
The method is
The first step of providing the first egg packaging carton and the second egg packaging carton,
The said first egg packaging carton comprises the second step of placing the first egg packaging carton on top of the second egg packaging caron and partially nested within the second egg packaging carton. The egg receiving compartment (810) of the tray is placed between the conical element and the conical element (702) of the lid of the second egg packaging carton.
A method comprising repeating the second step of stacking and arranging the egg packaging cartons. The lid is hinged to the egg tray at one end and
A locking mechanism (1108, 1110) is provided at another end between the lid and the egg tray.
The locking mechanism (1108, 1110) engages at least one holding projection extending from at least one edge of the lid with the at least one opening on the corresponding surface of the egg tray. The method of claim 12, wherein the method is provided for the purpose.

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