JP2010100297A - Egg packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an egg packaging container in which the thickness of a material sheet to be used is reduced to a limit, any local brittleness of the top of a lid which is most possibly weakened by the reduction of the thickness of the material sheet is supplemented, and the necessary compression-proof deformation strength is kept. <P>SOLUTION: The egg packaging container comprises a container body having a plurality of recesses for individually storing eggs, and a lid 2 having a plurality of covering parts 21 to individually cover eggs at a part opposite to each recess in the lid-closed posture. Each covering part 21 in the lid 2 has an outwardly projecting peripheral edge rib 24 on the peripheral edge part 23 of a top wall 22. A plurality of reinforcing ribs 26 extending in the direction of the top wall 22 are formed on a peripheral wall 25 constituting the covering part 21. These reinforcing ribs 26 extend to the outer peripheral surface of the peripheral edge rib 24 to divide the peripheral edge rib 24. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention swells and molds a synthetic resin sheet material, and a container body provided with a recess that individually accommodates eggs through a partition wall, and in a closed position, the egg is placed at a position facing these recesses. The present invention relates to an egg wrapping container comprising an individual cover portion covering the upper portion, that is, an open posture with the inner surface facing upward, and a lid body having a cover portion forming an individual recess.

  In general, eggs packaging containers are packaged by storing eggs in a container and then transporting them by stacking the required number of steps in a packaging case such as a cardboard case, and taking out at a retail store etc. They are displayed and sold for sale. For this reason, all the loads of the eggs stacked on the upper part are supported by the lowest container. Therefore, all of the containers must have a structure capable of withstanding a load that does not deform when the container is at the lowest level.

In order to provide strength enough to withstand the load of the stacked containers, the egg covering portion in the lid body is formed with a plurality of reinforcing ribs extending toward the top wall on the peripheral wall portion forming the covering portion. Therefore, the structure can withstand the load. This is as seen in Patent Document 1.
JP 2007-118957 A

  However, each of the plurality of reinforcing ribs extending in the direction of the top wall formed on the peripheral wall portion of the cover portion ends at the outer peripheral portion of the top wall. Therefore, since the conventional container receives the load of the egg of the upper container at the outer peripheral part of the top wall when it is in a stacked state, it greatly helps to prevent buckling of the peripheral wall part of the top wall, It has a structure in which it is difficult to share the reinforcing rib with the effect of preventing deformation of the top wall itself, which directly receives the load of the upper container, in particular, strengthening of the peripheral portion of the top wall.

  Therefore, in the conventional egg packaging container, the top wall of the lid of the lower container that directly contacts the bottom of the egg receiving recess of the container body in the upper container and directly receives the load of the upper container is deformed. In particular, the peripheral portion of the top wall of the lid is easily deformed or deformed, and it is difficult to prevent dandruff. For this reason, when a plurality of containers are stacked on the top, the fact that the stacked state sometimes collapses due to the shape deformation or deformation of the peripheral portion of the top wall has been confirmed.

  On the other hand, in many cases, this type of egg packaging container is of a nature that is immediately discarded when the egg buyer takes it home after purchase, removes the egg and transfers it to the refrigerator, Even in other cases, the container is stored in the refrigerator as it is, and the necessary number of eggs are taken out and used when necessary. If the eggs are used up, the container is immediately discarded.

  Thus, the manufacturing cost of this type of container is greatly affected by the thickness of the material sheet used, and can be reduced by using a thin material sheet. The molding cost is less affected by the thickness of the material sheet, and it can be said that a thin sheet is preferable to a thick sheet because it can be molded a little faster than a thick sheet.

  In view of this, the present invention, as a means of compressing the manufacturing cost of the container to the minimum, makes the thickness of the material sheet used as thin as possible, and structurally reduces the shape of the portion that is most likely to be weakened by making the material thinner. This is a chicken egg packaging container that can be reinforced by changing it to compensate for local weakening and retain the required compressive deformation resistance of the container that has been required in the past.

  The configuration according to claim 1 of the egg packaging container of the present invention taken to solve this problem is a container in which a synthetic resin sheet material is bulged, and a plurality of eggs are individually accommodated. The container body 1 provided with the recesses 11 and the lid body 2 provided with a plurality of cover portions 21 that individually cover the eggs at locations facing the respective recesses 11 in the closed posture, each cover in the lid body 2. The portion 21 includes a peripheral rib 24 projecting outward from the peripheral portion 23 of the top wall 22, and a plurality of reinforcing ribs 26 extending toward the top wall 22 are formed on the peripheral wall 25 constituting the cover portion 21. These reinforcing ribs 26 are extended to the outer peripheral surface of the peripheral rib 24 so that the peripheral rib 24 is divided.

  In carrying out this egg packaging container, as described in claim 2, the reinforcing rib 26 formed on the peripheral wall 25 of the covering portion 21 is recessed from the peripheral wall 25 toward the inner surface side. Either the rib 26a, the protruding rib 26b protruding outward, or both of these ribs 26a, 26b are formed in combination.

  In the egg packaging container according to the first aspect of the present invention, each cover portion of the lid body is provided with a peripheral rib projecting outward at the peripheral portion of the top wall, And the surrounding wall which comprises this cover part shall be equipped with the some reinforcement rib extended toward a top wall direction, and these reinforcement ribs are formed so that it may protrude outward in the peripheral part of a top wall. Since it is formed to extend to the outer peripheral surface of a certain peripheral rib and divide the peripheral rib, the load applied to the top wall of the lower container when stacking the egg containing containers is not supported only by the top wall, Since the reinforcing ribs extending to the top wall can be directly received and supported, the deformation of the top wall and its peripheral edge due to the load of the upper egg can be greatly reduced. Have an effect It's led was.

  As described above, the top wall of the cover portion of the lid that is most likely to undergo compressive deformation can be reinforced, so that the thickness of the material sheet that greatly affects the cost of the container is minimized. In the case of a container molded using a material sheet with the same thickness as a conventional container, the material cost can be reduced to a minimum. The effect that a container excellent in strength can be obtained can be expected.

  In carrying out the present invention, the container body 1 and the lid body 2 are made of a synthetic resin sheet material as a target material, and a predetermined shape is imparted by blow molding or vacuum molding means as in the conventional case. The synthetic resin sheet material can be any kind of sheet material conventionally used as a material for such containers, but if a sheet made of PET (polyethylene terephthalate) resin is used, Waste materials can be recycled, and even when incinerated, the amount of heat generated is small, extending the useful life of the incinerator and minimizing the generation of hazardous substances such as dioxins, and solving pollution problems Can contribute.

  Embodiments of the present invention will be described below with reference to the drawings. 1 to 9 are views showing a container for egg wrapping according to a first embodiment of the present invention. 1 is a plan view of the container in an open state, FIG. 2 is a front view thereof, FIG. 3 is a rear view thereof, and FIGS. 4 and 5 are a right side view and a left side view thereof. 6 is an enlarged plan view showing the top shape of the lid, FIG. 7 is an enlarged front view showing the rib structure of the lid, and FIG. 8 is an enlarged cross-sectional view cut along the line AA in FIG. It is.

  As is generally known, the egg packaging container shown in this example is obtained by bulging a synthetic resin sheet material into a container body 1 and a lid 2. Although the container body 1 and the lid body 2 may be formed separately, the container shown in the embodiment is integrated with the container body 1 and the lid body 2 via the bent portion 3. FIG. 1 shows an egg wrapping container that is integrally formed, and the container main body 1 is provided with an egg receiving recess 11 for individually storing the lower half of the egg in the horizontal direction in FIG. A total of 10 rows are formed in two rows in the front-rear direction, and the lid 2 also covers the upper half of the eggs individually at locations facing each of the receiving recesses 11 when the lid is closed. It consists of the cover body 2 in which the cover part 21 was formed. It is needless to say that the number of the concave portions 11 is not necessarily ten, and may be appropriately six, eight, twelve, fifteen or the like. Further, a partition column 18 is erected at the center of the four recesses 11 and a fitting recess 17 is formed on the top surface thereof.

  Each cover portion 21 in the lid body 2 is formed with peripheral ribs 24 projecting outward on the peripheral edge portion 23 of the top wall 22 constituting the cover portion 21 as mainly shown in FIGS. 6 to 8. It is. In addition, a large number of reinforcing ribs 26 extending in the direction of the top wall 22 are formed on the peripheral wall 25 constituting the covering portion 21, and at least a plurality of reinforcing ribs among these reinforcing ribs 26 are provided. In the container shown in the embodiment, the peripheral ribs 24 are equally divided into eight reinforcing ribs 26 at equal intervals in the circumferential direction of the peripheral ribs 24. The structure is extended to 24 outer peripheral surfaces. In addition, a partition column 28 is erected on the central portion of the four cover portions 21, and a fitting projection 27 is formed on the top surface thereof to be fitted to the fitting recess 17 when the lid is closed.

  Thus, in the egg packaging container shown in the embodiment, the reinforcing rib 26 formed on the peripheral wall 25 of the cover portion 21 in the lid 2 is provided with the cover portion 21 as shown in FIGS. It is formed as a recessed rib 26a that is recessed from the peripheral wall 25 toward the inner surface side.

  However, the reinforcing rib 26 does not necessarily have to be a recessed rib that is recessed from the peripheral wall 25 of the cover portion 21 toward the inner surface side. For example, as another embodiment, like the container shown in FIG. 9, it may be implemented as a protruding rib 26 b that protrudes outward from the peripheral wall 25 of the cover portion 21, that is, toward the outer surface side. Further, as is obvious, as shown in FIG. 10, it may be implemented as a structure using both the recessed ribs 26a and the protruding ribs 26b.

  Although the embodiment considered to be representative of the present invention has been described above, the present invention is not limited to the above-described embodiment structure, and includes the above-described constituent features according to the present invention to achieve the above object. In the range having the above-mentioned effects, it can be implemented with appropriate modifications.

  As is clear from the above description, the present invention is excellent in compressive deformation strength even when formed using a thin material sheet, and the upper part is stacked at the time of stacking for transportation or for display in the market. Since the lower container efficiently receives the load of the container, it is unlikely to be compressed and deformed, so it can supply eggs with less breakage to the buyer and can contribute to promotion of purchase, so it is greatly utilized by egg producers It is what is expected.

The top view which shows the cover open state of the container of 1st Example. The front view of the container. The rear view of the container. The right view of the container. The left view of the container. The enlarged plan view showing the top part shape of the cover body of the container. The enlarged front view showing the surrounding wall shape of the cover body of the container. The expanded sectional view cut | disconnected along the AA line shown in FIG. The enlarged view of the cut surface of the part for FIG. 8 which shows the container of another Example. The enlarged view of the cut surface of the part equivalent to FIG. 8 which shows the container of further another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container main body 2 Cover body 3 Bending part 11 Recessed part 21 Cover part 22 Top wall 23 Peripheral part 24 Peripheral rib 25 Peripheral wall 26 Reinforcement rib 26a Recessed rib 26b Protruding rib

Claims (2)

It is a container formed by bulging a synthetic resin sheet material, and a container body (1) provided with a plurality of recesses (11) for individually storing eggs, and each of these recesses (11) in a closed position. It consists of a lid (2) with a plurality of covering parts (21) that individually cover the eggs at opposite locations,
Each cover portion (21) in the lid (2) includes a peripheral rib (24) protruding outward from the peripheral portion (23) of the top wall (22), and constitutes the cover portion (21). A plurality of reinforcing ribs (26) extending in the direction of the top wall (22) are formed on the peripheral wall (25), and these reinforcing ribs (26) extend to the outer peripheral surface of the peripheral rib (24). And an egg packaging container formed to divide the peripheral rib (24). The reinforcing rib (26) formed on the peripheral wall (25) of the cover (21) is a recessed rib (26a) recessed from the peripheral wall (25) toward the inner surface, or a protrusion protruding outward. 2. The egg packaging container according to claim 1, wherein either one of the ribs (26b) or both of the ribs (26a, 26b) are formed in combination.

Images