JP2002012280A - Packaging container for egg, and egg - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container for eggs which is suitable for housing and storing eggs, and eggs. SOLUTION: A lid section 2 and a housing section 3 are integrally connected by a flat plate-shape connecting section 4. In this case, the lid section 2 and the housing section 3 have solid shapes which are suitable for housing eggs. Then, at the central section of the connecting section 4, a folding line 11 which makes the lid section 2 and the housing section 3 openable/closable is formed in the longitudinal direction to form this packaging container 1 for eggs, and eggs are housed in the packaging container 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chicken egg in which a synthetic resin sheet is used as a raw material, and a lid, a housing part and a connecting part having a three-dimensional shape suitable for accommodating chicken eggs are formed integrally by vacuum molding or the like. The present invention relates to a packaging container, and a chicken egg packaged by the packaging container, and belongs to a packaging technology, particularly a chicken egg packaging technology.

[0002]

2. Description of the Related Art A transparent synthetic resin sheet, such as polyvinyl chloride or polyethylene, is used as a packaging container for eggs used for storage, transportation, over-the-counter sales, etc. of raw shell eggs (hereinafter, simply referred to as "hen eggs"). Widely used is a packaging container made of a sheet such as polypropylene or polyethylene terephthalate (PET) and integrally formed with a lid part and a storage part having a three-dimensional shape of projections and depressions suitable for storing chicken eggs. I have.

[0003] A packaging container comprising a lid and a container integrally formed of such a synthetic resin stores a chicken egg in a container for transportation and the like, and then the lid is folded over to form a lid and a container. The flange portion formed on the peripheral portion is sealed by, for example, a staple or by heat fusion.

[0004] In order to open and close the lid with respect to the container for accommodating chicken eggs, this packaging container must be able to be easily bent at the joint thereof.
Synthetic resin sheets made of polyvinyl chloride, polyethylene, polypropylene, PET, etc. are rigid,
In addition, it is necessary for the packaging container to safely and securely contain fragile chicken eggs, but it is difficult to bend the connecting part because of its characteristics. When forming a packaging container in which a lid and a housing are integrally formed by using a sheet as a material, it is necessary to devise a connecting part that can be bent.

[0005] As means for making the connecting portion bendable, a widely used means is to make the connecting portion a curved surface, substantially U-shaped.
This is a means of forming a letter, that is, having a so-called R.

[0006]

However, the known packaging container for eggs requires the opening of the lid when storing the eggs, and the ease with which the stored eggs can be removed from the storage section. From the viewpoint, the central fold of the connecting portion is formed in a U-shape, and the fold has elasticity. Therefore, when transporting or the like, the lid is joined to the housing portion and sealed, and the lid is closed by some means. Need to be forcibly pressed against the container, the sealing operation of the packaging container is not easy, and the productivity is not good.

[0007] In addition, if the sealing method is insufficient, the lid may be opened during storage, transportation, over-the-counter sales, and the like, causing troubles such as damage to the stored eggs, and the like. On the other hand, when storing eggs in a refrigerator at home, there are issues to be solved, such as forcing the opening of the opened packaging container to close the lid for storing the remaining eggs. there were.

[0008] In view of the present situation, the present invention uses a transparent synthetic resin sheet as a raw material having good storage characteristics and distribution performance,
A further study was conducted on a packaging container consisting of a lid part and a storage part having a three-dimensional shape suitable for storing chicken eggs, and a connecting part formed by connecting these parts to bend freely. Packaging container and chicken eggs.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, a lid having a three-dimensional shape suitable for storing chicken eggs is provided by a flat connecting portion. A packaging container for chicken eggs, wherein a fold that allows the lid and the storage part to be opened and closed is formed along the longitudinal direction at the center of the connection part by integrally connecting the storage part. .

According to a fifth aspect of the present invention, there is provided a lid having a three-dimensional shape suitable for accommodating a hen egg, and a lid and an accommodating portion provided by a flat plate-like connecting portion having a fold formed in a central portion along a longitudinal direction. Characterized in that the eggs are packaged in a chicken egg packaging container in which are integrally connected.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a packaging container for eggs of the present invention will be described more specifically with reference to the accompanying drawings.

[0012] The packaging container for chicken eggs (hereinafter simply referred to as packaging container) of the present invention can be distributed from a production site to a consumer.
At the time of storage, not only the storage of eggs and the handling of packaging containers are extremely easy but also the production is simplified as compared with conventional products.

Materials for the packaging container include polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polystyrene (PS), and polyvinyl chloride (P) which have been conventionally used for packaging containers for eggs.
VC) can be used without any problem in the present invention.

The present invention will be described based on a packaging container 1 shown in FIG. 1 as a specific example of the packaging container of the present invention. The packaging container 1 is obtained by integrally molding a housing portion 2 having a thin transparent three-dimensional uneven shape, a lid portion 3 and a connecting portion 4 using a PET resin sheet, and the transparency is not necessarily required. Although not a necessary requirement, it is preferably transparent from the viewpoint of appearance.

The housing section 2 and the lid section 3 accommodate a total of 10 chicken eggs, so that a concave egg housing section 5 is provided for each of the five rows.
a and 5b are formed and partition walls 7a and 7b forming convex portions 6a and 6b are provided at the center between the rows in order to securely house the stored eggs.

The convex portion 6a of the housing 2 and the lid 3
And 6b are provided with projections 8a and pits 8b that can be fitted to each other in order to improve the joining state of the housing 2 and the lid 3, and the housings 5a and 5b and the convex portions 6a and 6b In each case, a plurality of vertical ribs (symbols are omitted) are provided in order to improve the strength of the packaging container, prevent shaking of the stored eggs, and protect the eggs.

In forming these vertical ribs, the housing 2
It is preferable that the size be adjusted to the size (eg, LL, L, M, and S) of the eggs to be stored in the inside.

As shown in FIG. 1, flat flanges 9a and 9b are provided on the periphery of the housing 2 and the lid 3, and these flanges 9a and 9b are connected to the housing 2 and the lid. The joint of the part 3 is formed.

The flange portions 9a and 9b are necessary for joining the housing portion 2 and the lid portion 3 and sealing the packaging container 1. The flange portions 9a and 9b can be sufficiently sealed with an adhesive or the like. The sealing portion is a portion that can be easily opened when taking out the eggs in the packaging container 1 without opening it during normal use such as storage, transportation, and display. , Usually formed into a flat plate having a width of 5 to 10 mm.

For sealing, the housing 2 and the lid 3 are
It is preferable that an adhesive is applied to a part of the flange portion 9a or 9b to form an adhesive layer 12, so that it can be easily joined to form the sealed packaging container 1, Applying the adhesive to a part of the flange portion 9a or 9b in advance at the time of manufacturing the packaging container makes the sealing state easier than applying and applying the adhesive at each site where the eggs are stored. In addition, it is preferable because it can be performed reliably.

As an application method of the adhesive, an adhesive, particularly a hot melt adhesive, for example, an ethylene-vinyl acetate hot melt adhesive is used. A method of melt-coating a part of the part 9a or 9b, a method of directly applying to a part of the flange part 9a or 9b in the case of a solution, or a method suitable for the flange part 9a or 9b in the case of a film. There is a method of heating and bonding a shape.

In the packaging container 1 in which the adhesive layer 12 made of these adhesives is provided on one of the flange portions 9a and 9b, after storing the eggs, the flange portions 9a and 9b are overlapped, and the flange portions 9a and 9b are overlapped. And adhesive layer 1 of 9b
2 can be easily sealed to form a sealed packaging container 1.

The adhesive layer 12 may be formed on a part of the flange portion 9a or 9b of either the accommodating portion 2 or the lid portion 3. The amount of the adhesive layer 12 and the range to be formed are determined by the sealing strength or the sealing strength. What is necessary is just to determine in consideration of the ease at the time of opening.

When the sealed packaging container 1 is opened, the flange portions 9a and 9b are peeled off when the sealed packaging container 1 is opened, and the flange portions 9a and 9b are peeled off to facilitate opening of the packaging container 1. It is preferable to provide ears 10a and 10b for the use. When the packaging container 1 is formed, the ear portions 10a, 10
b are overlapped, but the ear 10b formed on the lid 3 located at the upper part is
It is preferable that it is provided so as to protrude to the left from the ear 10a of the housing 2 located at the lower part.

The connecting part 4 of the housing part 2 and the lid part 3 formed by the flange parts 9a and 9b is composed of the flange part 9a of the housing part 2 that does not constitute the connecting part 4 and the flange part 9 of the lid part 3.
b is a form in which the widths of the flanges 9a and 9b are twice as large as the widths of the flanges 9a and 9b, that is, the width when the coupling portion 1 is folded and the housing portion 2 and the lid portion 3 are butted together. It is preferable in appearance that the width is substantially equal to the width of the original flange portion 9a or 9b.

A fold 11 having no repulsive force against double folding is provided at the center of the connecting portion 4 when the housing portion 2 and the cover portion 3 are folded and joined. The fold 11 having no repulsive force is an important configuration for facilitating the overlapping of the housing portion 2 and the lid portion 3 and manufacturing the packaging container 1 with good sealing performance with high productivity. The connecting portion 4 formed integrally with the lid portion 3 has a substantial resistance or repulsive force when bending for overlapping,
This is an effect which cannot be achieved by a material having elasticity and having a returning force to return a bent product to its original shape.

As a fold having no repulsive force, as shown in FIG. 1, a chain line perforation having a small number of connection portions is cited. The ratio of the connection portion to the cut portion is determined by the ratio of the material forming the connection portion itself. Considering strength, elasticity, etc.
What is necessary is just to set it in the range where elasticity is not recognized, and it is easily determined in the laboratory.

In addition, the fold having no repulsive force may be a dotted line, a dot, etc. other than the chain perforation, or a groove may be formed along the fold at the center outside the fold.

In the packaging container 1 for chicken eggs of the present invention, the eggs are accommodated in the accommodating portion 2 formed in the packaging container 1, and the accommodating portion 2 and the flange portions 9a and 9b of the lid portion 3 are overlapped with each other and then adhered. By using the agent layer 12 and heat sealing, the eggs can be stored and packaged.

As the conditions for heat sealing, when an ethylene-vinyl acetate hot melt adhesive is used as the hot melt adhesive, heat compression at a temperature of 110 to 160 ° C. for 1 to several seconds can be mentioned.

When taking out the eggs, one or both of the ears 10a and 10b formed on the flange portions 9a and 9b can be easily opened by picking the ears with fingers and peeling off the adhesive layer 12. it can.

[0032]

According to the present invention, there is provided a packaging container for chicken eggs, which is used to connect the container and the lid when the lid is opened and closed with respect to the container for storing and holding the eggs. Is formed in a flat plate shape, and a fold is formed at the center of the connecting portion so as not to generate a repulsive force in the connecting portion when the lid portion and the housing portion are folded. In the case of sealing, the sealing operation can be performed easily and easily, and even after the sealing is released, the lid can be easily and easily opened and closed with respect to the accommodation portion, and specially provided for sealing. This provides an excellent advantage in utilization, such as no need for any means.

Further, the egg packaging container of the present invention can be opened by a simple means as compared with the conventional method in which the connecting portion is broken and opened by a thread or the like embedded in the connecting portion. It also has

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a packaging container of the present invention.

FIG. 2 is a schematic side view of the packaging container of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging container for eggs 2 Storage part 3 Cover part 4 Connecting part 5a, 5b Storage part 6a, 6b Convex part 7a, 7b Partition wall 8a Projection 8b Trap 9a, 9b Flange part 10a, 10b Peeling ear 11 Fold 12 Adhesive layer

Continued on the front page F term (reference) 3E033 AA10 BA13 CA02 CA05 DA01 FA04 GA03 3E096 AA09 BA26 BB10 CA01 CB10 CC01 DA17 DA30 DB01 DC01 EA02X FA12 GA04 GA20

Claims (5)

[Claims] 1. A lid having a three-dimensional shape suitable for accommodating chicken eggs and an accommodating portion are integrally connected by a flat connecting portion, and a lid and an accommodating portion are provided at a central portion of the connecting portion. A packaging container for chicken eggs, characterized by forming a fold along the longitudinal direction so as to be freely opened and closed. 2. The chicken egg according to claim 1, wherein the fold is formed by a dotted line, a dot shape, or a chain line perforation, or a groove formed outside the fold. Packaging containers. 3. The chicken egg according to claim 1, wherein the lid portion or the housing portion is provided with an adhesive layer on a part of a flange portion formed on an outer peripheral edge thereof. Packaging container. 4. The chicken egg according to claim 1, wherein the lid or the housing has an opening for opening on a flange formed on an outer peripheral edge thereof. Packaging container. 5. A chicken egg in which a lid having a three-dimensional shape suitable for accommodating a hen egg and an accommodating portion are integrally connected by a flat plate-like coupling portion having a fold formed in a central portion along a longitudinal direction. A chicken egg characterized by being packed in a packaging container.