JPH1149143A - Folding-in type corrugated fiberboard box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a corrugated fiberboard box without requiring a corrugated fiberboard box-forming means such as a stapler, and a gum tape, and by folding the box at an optional place. SOLUTION: For a folding-in type corrugated fiberboard box 1 equipped with a plurality of folding flaps 31, 41, which are connected from a side wall 2 and form a bottom part 3 or a lid part 4 by being superposed, when the folding-in type corrugated fiberboard box 1 is built up by superposing the folding flaps 31, 41, at least at one part of the contact surfaces of the folding flaps which come into contact with each other when being folded, an adhesive layer 6 is formed, and on the surface of the adhesive layer 6, an adhesive layer protective sheet 7 is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable cardboard box, and more particularly to a foldable cardboard box that does not require a cardboard box forming means such as a stapler, a gum tape, etc. The present invention relates to a folding cardboard box that can form a cardboard box.

[0002]

2. Description of the Related Art Foldable cardboard boxes have been used for transporting and storing articles. The method of forming such a folding cardboard box is as follows. (A) First, of the eight folding flaps (which may be simply referred to as “flaps” in this specification) which are respectively extended from the upper and lower sides of the four surrounding side walls, Assembling the four folded flaps, and assembling the bottom part;
Fastening the two folding flaps with a stapler to form a bottom. Alternatively, instead of the step (b), the method includes the step of (b) ′ forming a bottom part by fastening end portions of the four folded flaps that are overlapped with each other in abutting fashion on the outer surface side with a gum tape. An article is placed in a foldable cardboard box having the bottom formed and the lid open, and then the remaining four fold flaps constituting the lid are overlapped to assemble the lid, and the lid is formed using a gum tape or the like. I do.

However, in the above-mentioned conventional method, when forming the bottom, a cardboard forming means such as a stapler or a gum tape is required. When a stapler is used as the corrugated cardboard forming means, the stapler may be a large machine.For example, when the place where the foldable cardboard box is used is a general home, office, store, etc., the stapler is used. It is necessary to carry the folded-in cardboard box forming the bottom to such a place. Also, even when a small stepper is used, ordinary households, offices, shops, and the like usually do not have such a stepper, and in such a place, the bottom of the folding cardboard box is not provided. Is formed by using a gum tape described below.

[0004] When a gum tape is used as the corrugated cardboard forming means, the bottom can be formed without using a stapler, as compared with a case using a stapler.
Also in this case, a gum tape is required separately from the foldable cardboard box. Therefore, there is a problem that the bottom of the foldable cardboard box cannot be formed when the gum tape is used up.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems.
An object of the present invention is to provide a folding cardboard box which can be folded at an arbitrary place to form a cardboard box without requiring a cardboard box forming means such as a stapler and a gum tape.

[0006]

In order to solve the above-mentioned problems, a folding cardboard box according to the present invention is provided with a plurality of folding flaps extending from a side wall and overlapping to form a bottom or a lid. When assembling a foldable cardboard box by stacking the foldable flaps in a corrugated cardboard box, an adhesive layer is formed on at least a part of the contact surfaces of the foldable flaps that are folded and abutted, and An adhesive layer protection sheet was formed on the surface of the layer.

[0007] The shape of the cross section of the side wall of the folding cardboard box according to the present invention is not particularly limited.
Examples include a rectangular shape and a rectangular shape.

A corrugated cardboard used for a folding type corrugated cardboard box is, for example, formed into a corrugated shape, and a piece of kraft paper coated with a glue at the top of the corrugated paper is sandwiched between two planar kraft papers. It is formed by.

The adhesive layer is to be coated with an adhesive capable of bonding the contact surfaces of the folded flaps which are folded and contacted when assembling the folded cardboard box by overlapping the folded flaps. Formed by Although the adhesive used in the present invention is not particularly limited, as described below, the adhesive layer protective sheet is removed, and the contact surfaces of the folded flaps overlapping when assembling the folded cardboard box can be strongly bonded. Adhesives which do not easily impregnate a cardboard box mainly made of kraft paper made from pulp are preferred.

The adhesive layer protective sheet protects the surface of the adhesive layer and is removed when the folding flaps are overlapped to form the bottom or the lid. Such an adhesive layer protective sheet is not particularly limited as long as it is a sheet that is not removed together with the adhesive layer when it is removed and can leave the adhesive layer on the folded flap surface. And release paper having improved lubricity.

The above-mentioned adhesive layer and the adhesive layer protective sheet are formed on at least a part of the contact surfaces of the folding flaps which are folded and contact with each other when the folding cardboard box is assembled, for example, as follows. Is done.

First, an adhesive is applied to at least a part of the contact surface between the folding flaps. An adhesive may be applied to any one of the contact surfaces, or an adhesive may be applied to any of the contact surfaces. The method of applying the adhesive used for the adhesive layer is not particularly limited, but a method capable of preventing unevenness of the adhesive as much as possible is preferable. Then
An adhesive layer protective sheet having substantially the same shape as that of the portion where the adhesive layer is formed is prepared and attached to the surface of the portion where the adhesive is applied.

Alternatively, the adhesive layer and the adhesive layer protective sheet can be simultaneously formed using a double-sided adhesive tape. More specifically, the double-sided adhesive tape in a state where the protective seal is peeled off on one side and the protective seal is left on the other side is folded into one of the contacting surfaces of the folding flaps that are folded into contact with each other. Paste in. In this case, the protective seal left on the other side corresponds to the adhesive layer protective sheet.

The adhesive layer and the adhesive layer protective sheet may be formed on at least a part of the contact surface between the folding flaps that are folded and contact with each other when the folding cardboard box is assembled. From the viewpoint of the balance between economy and adhesive strength, etc., when the folding flap is folded first when assembling the folding cardboard box, the contact surface between the folding flap which is folded later and overlapped is folded first. T on the flap side
It is preferable that a letter-shaped adhesive layer and an adhesive layer protective sheet are provided. Alternatively, of the contact surfaces of the folding flap which is folded first when assembling the folding cardboard box and the folding flap which is folded later and overlapped, a U-shape is formed on the folding flap side which is folded later and overlapped. It is preferable that the adhesive layer and the adhesive layer protective sheet are provided.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a folding cardboard box according to the present invention.

FIG. 1 and FIG. 2 are views showing one embodiment of the folding type cardboard box (1) according to the present invention.
In these figures, the bottom is shown upward for convenience of explanation. FIG. 1 shows a state in which the lid (4) has not been assembled yet and the bottom (3) is to be assembled, and FIG. 2 shows an assembly of the bottom (3) and the lid (4), and the adhesive layer. The state which peeled off the protective sheet (7) and formed the cover part (4) and the bottom part (3) is shown.

In FIGS. 1 and 2 showing the present embodiment, a folding cardboard box (1) according to the present invention is respectively extended vertically from four side walls (2) and overlapped to form a bottom (3). Four folding flaps (3
1) and four fold flaps (41) forming a lid (4), the fold flaps (31) and (41)
When assembling the foldable corrugated cardboard box (1) by overlapping the folds, the fold flap (311) that is folded first
Of the contact surface (5) between the folding flaps (411) and the folding flaps (312) and (412) to be folded and overlapped later, the folding flaps (311) and (4) folded first.
It has a configuration provided with a T-shaped adhesive layer (6) and an adhesive layer protection sheet (7) on the 11) side.

The procedure for assembling the foldable cardboard box according to the present invention in the above embodiment is as follows.

First, the folding flap (311) folded first is folded, and the T-shaped adhesive layer protective sheet (7) provided on the contact surface of the folding flap (311) folded first is peeled off and adhered. The agent layer (6) is exposed. Next, the folding flap (312) that is folded and superimposed later is folded and overlapped with the folding flap (311) that is folded first. Then, the folding flap (3) which is folded first by the adhesive layer (6).
11) and a folding flap (312) which is folded later and overlapped are bonded to form a bottom portion (3). Therefore, even if there is no cardboard box forming means such as a stapler or a gum tape, the foldable cardboard box (1) can be formed from the state before assembly.

In the above description, first, the folding flap (3
Although the adhesive layer protective sheet (7) is peeled off after folding in 11), this procedure may be reversed. The lid (4) is formed in the same manner as described above.

Further, the shape of the adhesive layer (6) is T-shaped, so that the adhesive can be applied efficiently and efficiently, and the consumption thereof can be reduced, so that a cardboard box can be formed extremely economically and efficiently. The bottom part (3) does not open even if the article is put into the folding cardboard box (1) after forming and the folding cardboard box (1) is lifted.

In the above embodiment, FIG. 3 shows a state of the foldable cardboard box (1) before assembling the foldable cardboard box (1). As shown in FIG. The type cardboard box (1) is also included in the scope of the present invention described in the claims.

(Another Embodiment) FIG. 4 showing the present embodiment.
In FIG. 5 and FIG. 5, the folding cardboard box (1) according to the present invention has the folding flap (311) folded first when the folding flaps (31) and (41) are overlapped to assemble the folding cardboard box (1). ) (4
11) and the contact surface (5) between the folding flaps (312) and (412) which are folded and overlapped later.
The U-shaped adhesive layer (6) and the adhesive layer protective sheet (7) are provided on the folding flaps (312) and (412) side where the folding flaps (312) and (412) are later folded and overlapped with each other. It has the same configuration and has the same effects as the above embodiment.

[0024]

According to the present invention, there is provided a foldable cardboard box which can be folded at an arbitrary place to form a cardboard box without requiring a cardboard box forming means such as a stapler or a gum tape.

[Brief description of the drawings]

FIG. 1 is a view of an attempt to assemble a bottom part (3) of a folding cardboard box (1) according to the present invention.

FIG. 2 shows the folded-in cardboard box (1) according to the invention after assembly.

FIG. 3 is a view showing a folding cardboard box (1) according to the present invention before assembly.

FIG. 4 is a view of trying to assemble the bottom part (3) of the folding type cardboard box (1) according to the present invention.

FIG. 5 shows the folded-in cardboard box (1) according to the invention after assembly.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Foldable corrugated cardboard box 2 Side wall 3 Bottom 31 Folding flap 311 Folding flap to be folded ahead 312 Folding flap to be folded and superimposed after 4 4 Lid 41 Flap to be folded 411 Flap to be folded forward 412 Folded flap 5 Contact surface 6 Adhesive layer 7 Adhesive layer protective sheet

Claims (3)

[Claims] 1. A foldable cardboard box provided with a plurality of foldable flaps extending from a side wall and overlapping to form a bottom portion or a lid portion, when the foldable flaps are overlapped to assemble the foldable cardboard box. A foldable cardboard box, wherein an adhesive layer is formed on at least a part of a contact surface between fold flaps that are folded and contact with each other, and an adhesive layer protective sheet is formed on a surface of the adhesive layer. 2. A T-shape of a contact surface between a folding flap which is folded first and a folding flap which is folded later and overlapped when assembling the folding type corrugated cardboard box, on the side of the folding flap which is folded first. 2. The foldable cardboard box according to claim 1, wherein the adhesive layer and the adhesive layer protective sheet are provided. 3. A contact surface between a folding flap which is folded first and a folding flap which is folded later and overlapped when assembling the folding cardboard box, a folding flap side which is folded later and overlapped. 2. The folding cardboard box according to claim 1, wherein the adhesive layer and the adhesive layer protective sheet are provided in a U-shape.