JPS5846977Y2 - cardboard box - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cardboard box in which the top and bottom of the box are formed by inner and outer flaps.

Conventionally, when storing easily damaged items such as fruits and vegetables, especially citrus fruits, in a cardboard box, the fruits and vegetables come into contact with the step formed by the inner and outer flaps of the box, and the step has an acute angle. This had the disadvantage of damaging the fruits and vegetables.

This damage to fruits and vegetables accounts for 3 to 5% of the amount stored in the cardboard box, creating a huge economic burden on those skilled in the art and on consumers.

As a method of solving the above-mentioned drawbacks of corrugated cardboard boxes, there is a conventional method of interposing a corrugated board or a styrofoam board between the inner and outer flaps and the stored fruits and vegetables. Therefore, when fruits and vegetables are stored, the stored items become bulky and push up the outer flap, making it difficult to close the lid smoothly and causing the box to be opened accidentally.

The inventor of the present invention, as a result of various studies in an attempt to eliminate the above-mentioned drawbacks of conventional corrugated boxes, found that a thin film body is bonded to connect the inner surfaces of the two lower inner flaps forming the bottom of the box, and the thin film body and If a cardboard box is made in which the lower flap is in contact with the lower inner flap through a gap, the sharp step caused by the lower outer flap will be covered by the thin film and will be directly pressed against the stored fruits and vegetables. Since there is nothing to do, we have come to the conclusion that damage to fruits and vegetables can be prevented.

The contents of the cardboard box according to the invention will be explained below with reference to the drawings.

FIG. 1 is a longitudinal sectional side view of an example of the cardboard box according to the present invention.

The cardboard box used in this project has two lower inner flaps 1a, 1a forming the box bottom 1 and two bottom flaps 1b.
, 1 b, two upward flaps 3 a , 3 a and two upward flaps 3 forming the box body 2 and the box lid 3
b, 3b, and the lower inner flaps 1a, 1a face each other with a gap in between.

In this case, a thin film body 4 is bonded to the box inner surfaces 1aa, 1aa of the two lower inner flaps la, la so as to connect these downward flaps 1a, 1a.

This thin film body 4 and the lower inner flaps 1a, 1a are in contact with the bottom flaps lb, lb through a gap.

When the thin film body 4 is attached to the lower inner flaps 1a, 1a, it visually looks like the lower inner flaps 1a, 1a.
It is necessary that the thickness is such that there is no significant difference in level between the layer and the layer a.

The thin film body 4 may be made of paper, cloth, a synthetic resin sheet, a thin metal plate, or any other material capable of forming the thin film body 4, but it must be able to withstand the weight of the items stored in the box, such as fruits and vegetables. The condition is that it has toughness.

And from the purpose of the present invention, the lower flap lb is in contact with the thin film body 4 and the lower inner flaps 1a, 1a.

1b through a gap, the thin film body 4 must not be made of a material that loosens under load or a material that has excessive elasticity.

For example, the thin film body 4 may be in the form of thin paper coated with a layer of rubber, synthetic resin, etc. to provide strength.

The thin film body 4 may be attached to the lower inner flaps la, la by using an adhesive, driving a stable, or other fixing means, and in this case, the load of fruits and vegetables stored in the box can be Needless to say, the adhesive should be firmly attached to prevent it from peeling off easily or shifting the bonding position.

When the thin film body 4 is used as a single sheet, the dimensions of the thin film body 4 are such that the length and width of the parts to be attached to the downward flaps 1a, 1a must be such that the length and width cover the space between the downward flaps 1a, 1a. The length of the bonded portion is the length of the lower ruled line 5 that extends from the free end of the lower inner flap 1a to the inner flap 1a.
It may be determined appropriately within the range.

It should be noted that the thin film body 4 is not limited to being used as a single sheet, but can be attached to the lower inner flaps la, la by making a plurality of narrower sheets and sticking them closely together in a parallel manner or separating them at an appropriately small interval. It is also possible to do the same (see Figure 3 B and C).

Further, a plurality of the thin film members 4 may be used in a stacked manner within a range that does not create a significant level difference between the lower inner flaps 1a, 1a.

In the actual case, the thin film body 4 is attached to the lower inner flaps 1a, 1.
When laminated to a, or when fruits and vegetables are placed, the thin film body 4 may sag somewhat as long as the ridge angles of the free ends of the lower inner flaps la, la are not made sharp.

Further, even when the thin film body 4 does not cover the entire free ends of the lower inner flaps 1a, 1a, but only one thin film body 4 is used, it is possible to store the thin film body 4 at the end of the free end in the lower ruled line direction. In some cases, the ridge angle may be exposed to the extent that it does not cause substantial damage to fruits or vegetables.

The present invention has a diagonal-like structure, and if this is used, the sharp step formed by the downward outward flaps la and lb will be covered by the thin film body 4, and will not come into direct pressure contact with the stored fruits and vegetables. This has the advantage of preventing damage to fruits and vegetables.

In addition, unlike the conventional method of inserting cardboard boards, etc., the contents do not become bulky, so the box can be closed very smoothly, and there is no risk of accidentally opening the box. be.

Therefore, this proposal has great benefits when used in this kind of field where the demand will increase more and more in the future.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of an example of the corrugated cardboard box according to the present invention, FIG. 2 is a longitudinal sectional side view of the same main part, and FIG. 3 is a plan view of the main part. In the figure, 1 indicates the bottom of the box, 1a indicates the lower inner flap, 1b indicates the bottom flap, and 4 indicates the thin film body.

Claims (1)

[Scope of utility model registration request] A corrugated board characterized in that a thin film body is bonded to connect the inner surfaces of two lower inner flaps, and the thin film body and a bottom flap in contact with the lower inner flap are in contact with each other through a gap. Box making.