JP6376933B2 - Cardboard box - Google Patents

Description

The present invention relates to a method for efficiently packing a plate-like product having a shape in which one side of a rectangle hangs down into a cardboard box, and a structure of the cardboard box for the method.

When a plurality of plate products are packed together and packed in a cardboard box, there are some precautions due to the properties of the products.
First, when a load is applied in a laminated state, the surface may be deformed by the unevenness of the opposing surface. This is a phenomenon called indentation. Once the indentation is generated, it is not easily recovered and the commercial value is lowered.
In addition, since the shape holding force is not large, if the load is continued, the shape may be distorted and the product may not be as designed.

  In the present invention, a rectangular plate-like product with one side drooping is used as a packaging target. A typical example of a product having this shape is a floor material for stairs. For the purpose of sound insulation or anti-slip, it covers almost the entire flat part of the stair step and the part from the convex ridge part called the nose to the bottom, and it is usually softened by adding a plasticizer. Various vinyl chloride resins, thermoplastic elastomers, etc., or a resin mixture in which these are combined are used.

  If this is installed on an existing staircase, if the flat part is integrated with double-sided tape or adhesive, the adhesiveness will be maintained and strengthened by stepping on its own weight and people, and then it may be peeled off There are few. However, the drooping part tends to peel off because its own weight does not contribute to the adhesion function.

  Therefore, the drooping portion is formed at an included angle (an angle of about 75 to 85 degrees if the step plane portion and the vertical portion are 90 degrees) slightly smaller than the actual angle formed by the plane portion and the vertical portion of the stair step. However, the hanging portion is not in the natural state of the product, but is usually formed so as to be widened. Since the restoring force from the spread state to the natural state always works, it does not peel off easily, and when a pressure-sensitive adhesive (pressure-sensitive adhesive) is applied, its fixing ability is also improved.

When this staircase material is stored in a cardboard box for storage and transportation, a package like Patent Document 1 is exemplified in order to avoid the problems caused by the “deformation” as described above. Yes.

JP2013-241218A

  Here, a packaging body in which two opposing wall surfaces among the four wall surfaces are inclined inward and the cross section is trapezoidal is illustrated. The other two wall surfaces are vertical, and a package containing a plurality of floor materials for staircases can be stacked so that the entire vertical wall surface is on the same plane, but the lower tier is directly below the long lower side of the upper package. There is a risk of buckling because of the lamination in which the short upper side of the package is in contact. In addition, if the layers are not neatly laminated and are displaced even a little, the ability to support the load becomes extremely small. In Patent Document 1, this is solved by a member called a support member for reinforcement, but it cannot be said that there is a sufficient effect, and a predetermined effect is expected if the length of the swash plate does not correspond to the number of stored sheets. There was a problem that I could not.

  In addition, when the trapezoidal sections are stacked in multiple rows and stages, the wall surface has irregularities. This means that the adjacent product and the projections collide with each other due to vibration or other causes during storage and transportation, and the risk of breakage is significantly higher than when the wall surface is a vertical surface. .

On the other hand, the product to be stored in the package also requires a device for packaging.
When storing a plurality of stair flooring materials in a cardboard box for storage and transportation, there is also a problem that it is difficult to stack in the first place, in addition to the problems caused by “deformation” as described above. . Since it is a product that consists of a flat part that occupies an overwhelming area and a hanging part that is bent on one side, it will be stacked while shifting by the thickness when considered the simplest. Will be packed in a shape that is biased to one side.

  Therefore, a method of laminating one hanging part or a plurality of drooping parts so as to alternate left and right is often adopted. The hanging parts are stacked so that they alternate between left and right as much as possible. If this is the case, the overall shape (packing shape) approaches a symmetric shape, so if it is placed in a trapezoidal corrugated cardboard box as in Patent Document 1, it can be packaged while retaining its shape. However, in this case, since the bottom surface of the package becomes wider than the top opening surface, the storing operation is not impossible but troublesome.

If a normal rectangular parallelepiped cardboard box is used instead of this cross-section trapezoidal corrugated cardboard box, it can only be dealt with by filling the box with several sheets and then holding the shape with padding etc. It's not a method. Therefore, there has been a demand for a method for packaging as many steps as possible in a simple, effective and firm manner while maintaining the shape thereof.

  Therefore, the present inventors have finally made the present invention as a result of intensive studies in view of the above points, and the feature of the present invention is that in the method of packing a plate-like product, a rectangular plane portion, A method of packing a plurality of plate-like products formed by a hanging part formed by hanging one side, and a pair of walls facing the frame constituting the outer wall surface, the top surface, and the inner wall surface by bending Laminate one or more of the products one by one so that the flat part of the product is in contact with the bottom surface of the cardboard box attached to the face plate, and the hanging parts of the product rise and face each other in the longitudinal direction inside the frames. The outer wall surface of the frame of the cardboard box to be used is perpendicular to the bottom surface of the cardboard box, and the inner wall surface is 70 to 80 ° with respect to the bottom surface of the cardboard box. Overhang at an angle In the structure of a cardboard box, a tray type with a frame for packing a plurality of plate-like products formed by a rectangular planar portion and a suspended portion formed by hanging one side of the rectangular planar portion. The cardboard box, which is bent to form the outer wall surface, the top surface, and the inner wall surface, is bent on the inner wall surface while the outer wall surface is perpendicular to the bottom surface of the cardboard box. Is overhanged at an angle of 70 to 80 ° with respect to the bottom of the cardboard box.

The “plate-like product” referred to in the present specification is formed by a rectangular planar portion and a hanging portion formed by hanging one side thereof. The use of this product is not particularly limited, but typical examples are a staircase flooring installed from the entrance step of a house or the step surface of a staircase to a nose.
The floor material for stairs itself is mainly made of synthetic rubber in order to exert a soundproofing / slipproofing function. However, in the present invention, the material of the “plate product” is not particularly limited. Regarding the shape, it has the characteristics that the whole is generally rectangular, and that one side is bent and has a suspended portion. The included angle of the bent portion is approximately 80 to 85 degrees. The thickness of the plate product is not limited.

  In this specification, the phrase “packaging” and the phrase “packaging” are synonymous. The term “packaging” is used mainly when explaining based on Patent Document 1, and the term “packaging” is used when explaining the present invention.

The cardboard box in the present invention is a type of cardboard box called a framed tray or simply a tray.
This cardboard box has a part called a picture frame. This is a structural portion including a horizontal plane formed in the folded portion in the structure in which the wall surface plate rising from the bottom surface plate is folded 180 degrees and the tip portion is locked to the bottom surface plate. Since corrugated paper is thick, only one crease line is required for folding up to about 90 degrees, but two crease lines are required for folding at 180 degrees. . It can be said that a frame is created by these two folding ruled lines. The purpose of arranging the frame is not to show the end face of the corrugated paper on the upper end of the wall surface plate, to be able to assemble the box without bonding by sandwiching and folding the tongue of the adjacent wall surface plate, stacking the boxes Increase the load-bearing capacity when

In order to achieve the above object, the conventional frame has an angle of 90 degrees between the bottom plate and the outer wall plate, the outer wall plate and the frame ceiling plate, and the frame ceiling plate and the inner wall plate.

However, the structure of the frame portion of the cardboard box employed in the method of the present invention is completely different from the conventional one.
That is, the inner wall surface plate is not parallel to the outer wall surface plate and overhangs at an angle of 70 to 80 ° with respect to the bottom surface plate.
Since the frame is provided on at least a pair of opposing wall surfaces among the four wall surfaces, this pair of frame has this structure, so that the overall shape formed by laminating a plurality of the plate products described above (packing form) ) Is created.

  The method of the present invention requires the use of a cardboard box having the above structure. The cardboard box is a tray-type cardboard box with a frame as described in claim 6, and the cardboard box both frames constituting the outer wall surface, the top surface, and the inner wall surface by being bent are While the wall surface is perpendicular to the bottom surface of the cardboard box, the inner wall surface is overhanged at an angle of 70 to 80 ° with respect to the bottom surface of the cardboard box. Although the outer wall surface is assumed to be perpendicular to the bottom surface of the cardboard box, the right angle here does not mean that it is exactly 90 degrees, and individual differences in assembling the cardboard box or the inside and outside of the frame Some errors may occur depending on the design reason for applying the various tongue pieces between the wall surfaces, and so on.

The cardboard box of the present invention can be further improved by adding a device.
For example, the frame structure is a structure in which the outer wall surface plate, the frame top surface plate, and the inner wall surface plate are provided in order from the bottom surface plate through the crease line, but actually the protrusion extends further to the end side of the inner wall surface plate. The protrusion is fitted into a slit hole formed in a part of the bottom plate and fixed. Moreover, this protrusion is not usually bent and is not separated from the inner wall surface plate.
Claim 7 is a modification of this part. Since the plate-shaped product packed in the cardboard box of the present invention has a thickness and a hanging portion, it cannot be laminated straight, and it is not necessary to laminate it while shifting at least by the thickness. Therefore, in the lowermost plate-like product, the end where the hanging portion is present abuts the lower end position of the inner wall surface of the frame, but the end opposite to this end portion is separated from the lower end position of the inner wall surface of the frame. Will do. Therefore, a tongue piece for restricting the movement of the lowermost product may be provided on the free end side of the inner wall surface via a crease line. Of course, as described above, the inner wall surface must be fixed to the bottom plate, and therefore has a projection for that purpose. Therefore, a tongue piece for restricting the movement of the lowermost product through the crease line is provided at the free end portion of the inner wall surface plate, and the deviation of the lowermost plate-like product is regulated by the tongue piece. Can do.
(In this specification, “folded ruled line” is a word indicating a straight line portion to be bent, and it is not necessary that a “printed ruled line” exists on the surface of the cardboard paper. )

  Alternatively, instead of or together with this method of providing a tongue piece for restricting the movement of the lowermost product via a crease line on the free end portion of the inner wall surface plate, a separate corrugated paper is fitted. The form is also conceivable. An example thereof is claim 8. That is, a tongue piece is provided on the free end portion side of the inner wall surface via a crease line to hit the end of the flat portion of the lowermost product and to restrict the movement of the uppermost product. Further, a separate L-shaped cardboard is inserted between the tongue piece and the bottom surface of the main body and the gap between the inner and outer wall surfaces. When this is used in combination with the tongue for restricting the movement of the lowermost product as defined in claim 7, the L-shaped corrugated paper is the lowermost, and the tongue as defined in claim 7 is the upper This means that the deviation of the plate-like product is regulated. It should be noted that an appropriate portion of the L-shaped corrugated cardboard needs to be cut out so that the mechanism (protrusions and slit holes) for fixing the inner wall surface described above to the bottom plate functions without trouble.

Furthermore, ingenuity may be devised to improve the load resistance of the frame. The proposal of claim 9 is an example thereof, and the pair of wall plates on which the frame of the cardboard box is not disposed has insertion tongue pieces that are continuous via a crease line in a direction that is vertical when assembled. Further, the insertion tongue piece has a supporting tongue piece that is continuous through a crease line that is horizontal when assembled, and the insertion tongue piece is bent to form a gap in the inner and outer wall surfaces of the frame. The supporting tongue piece is bent and is brought into contact with the lower surface of the top plate of the frame. A tray-type cardboard box with a frame can be assembled without an adhesive. Therefore, the pair of wall plates without a frame are attached to the wall plate through horizontal crease lines. A box is assembled by inserting a piece into a gap between the inner and outer wall surfaces of the frame.
In claim 9, the upper end of the insertion tongue piece is bent at the crease line so that the upper part of the insertion tongue piece can efficiently support the frame top plate when assembled, and the support tongue piece is formed, A structure that touches the lower surface of the frame top plate is proposed.

At the stage where a plurality of plate products are packed in the corrugated cardboard box of the present invention, the end on the side facing the hanging portion of the rectangular flat portion of the uppermost plate product is the hanging portion of the lower plate product. Although it is ideal to contact the inner surface of the product, in reality it is designed to have some play so that the packing operation can be performed smoothly. Therefore, it may be misaligned during conveyance and other operations. In order to maintain the separation distance as designed, after claiming all the plate-like products, the present invention is provided with a distance control material as a separate part for the hanging portion that fits between the facing hanging portions. ing.

  The present invention relates to a method for packing a plate-shaped product, in which a plurality of plate-shaped products formed by a rectangular plane portion and a hanging portion formed by hanging one side of the plate-shaped product are packed in a rectangular parallelepiped cardboard box. Yes, the flat part of the product comes into contact with the bottom of the corrugated cardboard box attached to a pair of wall plates facing the frame that constitutes the outer wall surface, the top surface, and the inner wall surface by bending, and the longitudinal direction inside the both frame frames 1 or a plurality of the products are alternately stacked and packaged so that the hanging portions of the products rise and face each other, and the outer wall surface of the frame of the cardboard box used is the bottom surface of the cardboard box The inner wall surface is overhanged at an angle of 70 to 80 ° with respect to the bottom surface of the cardboard box. In the structure of the cardboard box, a rectangular plane portion and one side thereof Drooping made to droop A tray-type cardboard box with a frame for packing a plurality of plate-like products formed by a part of the cardboard box, which is bent to form an outer wall surface, a top surface, and an inner wall surface. Is characterized in that the outer wall surface is perpendicular to the bottom surface of the cardboard box while the inner wall surface is overhanged at an angle of 70 to 80 ° with respect to the bottom surface of the cardboard box. Thus, the present invention is an extremely advanced invention having the following effects.

(1) Since the inner wall surface of the frame is overhanged at an angle of 70 ° to 80 ° with respect to the bottom surface of the cardboard box, the angle formed by the flat portion and the hanging portion of the plate-like product is biased to an acute angle. There is no need for additional means for
(2) Since the outer wall surface of the frame rises substantially perpendicular to the bottom surface, the wall surface formed when the cardboard boxes are stacked is close to the vertical surface. Therefore, it is easy to stack in multiple rows and rows, and there is little risk of breakage or buckling.

It is a schematic perspective view which shows an example of the cardboard box which concerns on this invention. It is a top view of the blank of the cardboard box shown in FIG. It is a fragmentary perspective view which shows the state in the middle of assembling the frame part of the cardboard box of the example shown in FIG. FIG. 3 schematically shows the structure of a frame facing the frame in FIG. 3, in which FIG. (A) is a schematic plan view showing a part of a blank, and (b) is a schematic perspective view in an assembled state. is there. It is a schematic perspective view which shows an example of the plate-shaped product to pack. FIG. 3 is a schematic sectional view showing a state in which four plate products are stored in the cardboard box of the example shown in FIGS. 1 and 2. FIG. 6 is a schematic cross-sectional view showing a state in which three plate-like products are further stored from the state of FIG. 5 and a distance regulating material is fitted between the hanging parts. (A) (b) is a schematic sectional drawing which shows the other example of the structure of a frame part.

FIG. 1 shows an example of a cardboard box 1 according to the present invention (hereinafter referred to as “the cardboard box 1 of the present invention”). The dimensions of the cardboard box 1 of the present invention are designed in advance based on the dimensions of the plate-like members to be packed and the number of packed sheets. FIG. 2 shows the blank sheet state. The cardboard box 1 of the present invention is basically provided with a lid, but since it is the same as a conventional lid, detailed description and depiction thereof will be omitted in this specification.
The cardboard box 1 of the present invention is a type of cardboard box called a framed tray (or simply a tray), which is composed of a bottom surface and four wall surfaces, and two opposing surfaces of the four wall surfaces become “frames”. Yes. The frame is bent in order from the bottom surface plate 2 constituting the bottom surface, and an outer wall surface plate 3, a top surface plate 4, and an inner wall surface plate 5 are formed.
There are three projecting pieces 51 at the end of the inner wall surface plate 5, and these projecting pieces 51 are structured to fit into the slit holes 21 formed in the bottom plate 2.

  The outer wall surface 3 is vertical to the bottom surface, and the top panel 4 is horizontal and is similar to a general picture frame, but the inner wall surface plate 5 is overhanged when viewed from the inside of the box (in this example, the angle with the bottom surface). 75 degrees).

The other two wall surfaces (that is, the wall surfaces that do not form a frame) are formed by the wall surface plate 6 that is in contact with the bottom surface plate 2 through the crease line, and the wall surface plate 6 is further apparent from FIG. The horizontal flap 7 and the insertion tongue piece 8 are in contact with each other through a crease line.
Of these, the horizontal flap 7 is a member that partially covers the opening of the cardboard box 1 of the present invention. Of the four wall surfaces of a conventional tray type cardboard box with a frame, two wall surfaces that do not have a frame structure may not be accompanied by a flap (that is, there is no folded portion), but in that case, the cross section of the cardboard paper is exposed. In other words, it is not aesthetic and is fragile in terms of strength. Therefore, a “folded piece” that is a portion that is folded 180 degrees at the right end of the wall surface is often attached.
The horizontal flap 7 of the corrugated cardboard box 1 of the present example is completely different from the “folded piece”. That is, in the case of the conventional folded piece, it is folded 180 degrees, and since at least the insertion tongue piece 8 is inserted into the frame structure, the width of the frame structure must be avoided. I don't get it.
However, in the case of the horizontal flap 7 of this example, it is bent only in the horizontal direction (that is, 90 degrees). This made the width of the horizontal flap 7 longer than that of the conventional folded piece, and made it possible to place both ends on the top of the frame. As a result, a part of the load received by the wall surface plate 6 portion is shared by the frame portion, which contributes to improvement in rigidity.
As described above, the horizontal flap 7 is a member that partially covers the opening of the corrugated cardboard box 1 of the present invention, and is a member that obstructs the product storage operation. Therefore, it is preferable that the product is stood or bent in the reverse direction until the products are stored, and then folded after storing all the products.

FIG. 3 shows a state in which the corrugated cardboard box 1 of the present invention shown in FIGS. 1 and 2 is assembled. In order to form a frame, the fold line of the blank sheet is bent, The top surface plate 4 and the inner wall surface plate 5 are shown in the process of being made up.
The insertion tongue piece 8 in contact with the wall surface plate 6 is arranged in a state where it is bent at the crease line portion and inserted into the gap between the outer wall surface plate 3 and the inner wall surface plate 5 (that is, the space below the top plate 4). . The cross-sectional shape of the gap (the space below the top plate 4) is a triangle or trapezoid with a narrow lower side. Therefore, if the support tongue piece 9 is made in contact with the insertion tongue piece 8 and bent to make the support tongue piece 9 horizontal and contact the lower surface of the top plate 5, the stability of the insertion tongue piece 8 is improved. As the load increases, the load bearing capacity of the frame is improved, which is preferable.

In addition, as for this invention cardboard box 1 of this example, the two frames which exist in the shape which opposes are not the same. The frame structure not shown in FIG. 3 is as shown in FIG. In other words, the movement restricting plate 10 is in contact with the inner wall surface plate 5. Since the inner side surface plate 5 needs to have a protruding piece 51 at a part thereof, as is clear from FIG. 5A, a “U” -shaped slit 11 is provided in the blank sheet, and along the crease line. The protruding piece 51 is designed to appear when bent.
When assembled, the movement restricting plate 10 exists in the form of advancing to the upper surface of the bottom plate 2 as shown in FIG.

  Hereinafter, an example of a method for packing a plate-like product using the corrugated cardboard box 1 of the present invention will be described over time and in outline. The plate-like product A to be packed in this example is a staircase floor material made of a soft vinyl chloride resin sheet, and a rectangular plane portion B having an overwhelming area as shown in FIG. It is a product having an L-shaped cross section composed of a hanging portion C having a shape hanging from one side. The plate-like product A of this example has a thickness of about 4.2 mm, the plane portion B has a length of about 900 mm and a width of about 320 mm, and the suspended portion C has a height of about 40 mm. A continuous uneven pattern is formed on the exposed side surface of the product for the purpose of improving aesthetics and anti-slip properties, but the depiction thereof is omitted in the figure. Further, the dimensions of the product are not limited to those shown in the figure, since various ready-made sizes already exist and custom-made products may exist.

An angle (a included angle) θ formed by the rectangular flat portion B and the hanging portion C of the plate-like product A is about 75 degrees in the case of this example. The number of plate-like products A packed in the corrugated cardboard box 1 of the present invention is designed to be seven. The storage is performed in a state where the plate-like product A is turned upside down (that is, the suspended portion C is not suspended from the plane portion B).
FIG. 6 shows a state in which four plate products A are first stored in the cardboard box 1 of the present invention.
Since the frame having the movement restricting plate 10 is arranged on the left side of the frame in this drawing, it is necessary to store the lowermost plate-like product A so that the hanging portion C is on the right side. As is apparent from the figure, the plate-like product A is not a simple rectangular plate, and as it is laminated, it shifts to the left by the thickness of the product. Since the corrugated cardboard box 1 of the present embodiment is of a seven-sheet storage type, at least the left end of the lowermost plate product A (that is, the edge surface of the plane portion) and the lower end of the facing frame are at least the product. The length corresponding to 6 times the thickness is separated (when calculated on the assumption that the inner wall surface plate is perpendicular to the bottom surface plate). In the case of the plate-like product A of this example, since the thickness is about 4.2 mm, it is 25 mm or more. It can be said that the movement restricting plate 10 is a member that fills the separation part.

Next, FIG. 7 is a schematic cross-sectional view showing a state in which three plate-like products A are further stored from the state of FIG. The three newly stored plate-like products A are stored in such a manner that their positions are different from those of the lower four sheets and the hanging portion C is on the left side.
When the three sheets are stored, the entire design number is stored. At that time, the right ends of the upper three plate products A are in contact with or close to the inner surface of the hanging portion C of the upper four plate products A, and the upper three plate products A The right end of the center product and the bottom product of product A will move away little by little. In this state, the corrugated cardboard box 1 of the present invention is tilted or vibrated, and there is a risk that the right end of the uppermost three plate products, in particular, the uppermost one will be bent. In some cases, the deformation may remain without being restored. Of course, in that case, it becomes a defective product as a flooring material for stairs. Therefore, it is the distance regulating material 11 for the hanging part that prevents this.
The cardboard sheet is simply bent at both ends, and the left and right hanging portions C can be held at the designed width. The reason why both ends are bent is that the indentation is less likely to be brought into contact with the bent portion than with the cut surface of the corrugated cardboard sheet. Even if the cardboard sheet is simply cut, the intended purpose is fulfilled.
After setting the distance regulating material 11 for the hanging part, usually the cover is put on, and if this is fastened with a binding string, packing tape, etc., the packing operation is completed. However, since the lid structure or the method for fastening the lid to the corrugated cardboard box 1 of the present invention is not different from the conventional case, the drawing is omitted.

FIGS. 8A and 8B show still another example of the present invention regarding a frame on which the movement restricting plate 10 is arranged.
In this example, a separate cardboard sheet is used. This separate cardboard sheet is an L-shaped cardboard 12 formed by bending a long rectangle at a right angle along its longitudinal direction.
An example in which this is provided instead of the movement restricting plate 10 is shown in FIG. 5A. After the L-shaped cardboard 12 is disposed, the movement restricting plate 10 is disposed thereon, thereby restricting movement. FIG. 5B shows a step type, in which not only the lowermost plate-like product A but also the plate-like product A thereabove is intended to regulate the displacement movement.

1 Cardboard box according to the present invention 2 Bottom plate 21 Slit hole 3 Outer wall surface plate
DESCRIPTION OF SYMBOLS 4 Top plate 5 Inner wall plate 51 Projection piece 6 Wall plate 7 Horizontal flap 8 Inserting tongue piece 9 Supporting tongue piece 10 Movement control plate 11 Suspension part distance control material 12 L-shaped cardboard

Claims (4)

A tray-type cardboard box with a frame for packing a plurality of plate-like products formed by a rectangular flat part and a hanging part formed by hanging one side of the flat part. The frame on both sides of the cardboard box constituting the wall surface, top surface, and inner wall surface, while the outer wall surface is perpendicular to the bottom surface of the cardboard box, the inner wall surface is 70 to 80 ° with respect to the bottom surface of the cardboard box. angle all SANYO obtained by overhanging, and separating, on one of a pair of frame facing the stepped carton, when the edge face of the flat portion of the bottom product, depending portion of the lowermost product from frame A corrugated cardboard box, characterized in that a tongue piece for restricting movement in a direction to be provided is provided on the free end portion side of the inner wall surface via a crease line . A tray-type cardboard box with a frame for packing a plurality of plate-like products formed by a rectangular flat part and a hanging part formed by hanging one side of the flat part. The frame on both sides of the cardboard box constituting the wall surface, top surface, and inner wall surface, while the outer wall surface is perpendicular to the bottom surface of the cardboard box, the inner wall surface is 70 to 80 ° with respect to the bottom surface of the cardboard box. angle all SANYO obtained by overhanging, the pair of frame of one opposed to a separate member, when the edge of the planar portion of the lowermost product, for restricting the movement of the lowermost product A corrugated cardboard box , in which corrugated paper having an L-shaped cross section along the gap between the inner and outer wall surface plates of the frame and the bottom plate is inserted . The pair of wall surface plates on which the frame of the cardboard box is not arranged is an insertion tongue piece that is continuous with the wall surface plate via a crease line in a direction orthogonal to a bottom surface plate and a crease line that separates the wall surface plate. The insertion tongue piece further includes a support tongue piece that is continuous through a crease line that is parallel to a crease line that separates the bottom plate and the wall plate. The corrugated cardboard box according to claim 1 or 2 , wherein the insertion tongue piece is bent and fitted into a gap between the inner and outer wall surfaces of the frame, and the support tongue piece is bent and contacts the lower surface of the top plate of the frame. 4. A corrugated cardboard box according to claim 1, 2 or 3, wherein the plurality of plate-shaped products are separately provided with a hanging portion distance regulating material fitted between the facing hanging portions.

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