JP5697222B1 - Packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the pressure strength while ensuring the weight reduction which is a characteristic of cardboard and to well protect a packaged article stored in a storage space. SOLUTION: A front wall plate A1 and a rear wall plate A2 that form a front wall inner surface A1a and a rear wall inner surface of a storage space S are formed from a first corrugated cardboard 1 in which a core is formed between front and back liners 1A and 1B. A plurality of side wall plates B that are configured and formed separately for each side surface of the box body in a state in which the peripheral wall inner surface Ba of the storage space S is formed, the number of core layers between the front and back liners 2A, 2B is the first cardboard The second corrugated cardboard 2 is composed of more than one second corrugated cardboard 2 and the plurality of side wall plates B are oriented so that the stacking direction of the second corrugated cardboard 2 is orthogonal to the respective side surfaces, and adjacent end portions are second corrugated cardboard. The two layers are arranged to face each other. [Selection] Figure 2

Description

  The present invention relates to a cardboard packaging box having a storage space.

  As a packaging box made of corrugated cardboard, for example, as shown in Patent Document 1, a front wall plate and a rear wall plate that form a front wall inner surface and a rear wall inner surface of a storage space, and a belt-like shape that forms a peripheral wall inner surface of the storage space Each of the peripheral wall plates has been proposed as a single-layer cardboard having a single core formed between the front and back liners.

In this packaging box, a V-shaped notch for bending at a right angle at a position corresponding to a corner between adjacent side surfaces on the inner surface of the peripheral wall, and a peripheral edge of the rear wall used as a bottom plate A fitting groove is formed to fit and hold the part, and the box body is bent at a right angle at the notch portion corresponding to each corner with the peripheral edge portion of the rear wall plate fitted in the fitting groove. It is composed.
The peripheral wall plate of the box main body is configured in a vertical orientation in which the axial direction of the narrow tubular hole formed by the center of the single-layer cardboard is perpendicular to the front wall plate and the rear wall plate.

  Moreover, the peripheral wall part for mounting | wearing with the peripheral part of the front wall board used as a top plate in the external fitting state so that attachment or detachment is possible from the upper direction with respect to the surrounding wall board of a box main body is formed.

JP 2001-253428 A

In a conventional packaging box, the peripheral wall plate of the box body is arranged in such a posture that the axial direction of the narrow tubular hole formed by the center of the box body is directed vertically, and the front wall plate as the top plate and the rear wall as the bottom plate A configuration is adopted in which the strength against vertical external force acting on the plate is increased.
However, each of the front wall plate, the rear wall plate, and the peripheral wall plate is composed of a single-layer cardboard in which a single core is formed between the front and back liners, and the peripheral wall plate includes an inner surface of the peripheral wall. V-shaped cutouts for bending at right angles at positions corresponding to the corners between adjacent sides of the side surface and a fitting groove for fitting and holding the peripheral portion of the rear wall plate used as the bottom plate are formed. For this reason, it is easy to be deformed or damaged when an impact force due to dropping or collision is applied to the box, and the packaged item stored in the storage space cannot be sufficiently protected.

  The present invention has been made in view of the above-described actual situation, and its main problem is to increase the pressure resistance while ensuring the weight reduction which is a characteristic of the cardboard, and to wrap the packaged item stored in the storage space. It is in providing a packaging box that can be well protected.

A first characteristic configuration according to the present invention is a cardboard packaging box having a storage space,
The front wall plate and the rear wall plate forming the front wall inner surface and the rear wall inner surface of the storage space are composed of first cardboards in which a core is formed between the front and back liners,
A plurality of side wall plates formed separately for each side surface of the box body in a state of forming the inner peripheral wall inner surface of the storage space, from the second cardboard having a larger number of core layers between the front and back liners than the first cardboard With composition
The plurality of side wall plates are arranged in an orientation in which the stacking direction of the second corrugated cardboard is perpendicular to the respective side surfaces between the opposing surfaces of the front wall plate and the rear wall plate , and adjacent end portions are The two cardboards are arranged to face each other ,
The orientation posture of the side wall plate is configured such that the axial direction of the narrow tubular hole formed by the core of the second corrugated cardboard is orthogonal to the joining surface of the front wall plate and the rear wall plate. It is in.

  According to the above configuration, each side wall plate constituting the annular skeleton in the box has the second corrugated board having more core layers between the front and back liners than the first corrugated board constituting the front wall plate and the rear wall plate. Therefore, compared with the case where the entire box is made of corrugated cardboard having the same layer thickness, the pressure strength can be increased while maintaining the weight reduction.

  In addition, by arranging each side wall plate in an orientation in which the stacking direction of the second cardboard is perpendicular to the respective side surfaces, for example, the stacking direction of the second cardboard is the front wall plate and the rear wall plate. Compared with the case where it is disposed in an orientation that is orthogonal to the joint surface of the wall plates, the strength against external force acting perpendicularly to the front wall plate and the rear wall plate can be improved, and adjacent in the circumferential direction. By arranging the end portions of the side wall plates to face each other with the layer thickness of the second corrugated cardboard, the strength against external force acting on each side wall plate can also be improved.

  Furthermore, the laminating direction of each side wall plate is a direction orthogonal to the respective side surface, and the thickness direction of the front wall plate and the rear wall plate is also a direction orthogonal to the front wall inner surface and the rear wall inner surface, respectively. A buffering function can be exhibited against movement in any direction of an article to be packaged stored in the storage space.

  Therefore, it is possible to increase the pressure resistance of the box while ensuring the weight reduction that is characteristic of cardboard, and to prevent deformation and breakage when impact force due to dropping or collision acts on the box, The packaged goods stored can be well protected.

Furthermore, the large thickness of the second corrugated cardboard constituting each side wall plate can be utilized to make contact with each joint surface of the front wall plate and the rear wall plate in a wide area, and the most strong of each side wall plate. The axial direction of a certain thin tubular hole in the core is configured in a direction perpendicular to the joining surface of the front wall plate and the rear wall plate, so that the pressure resistance of the box can be remarkably increased, and a drop or collision Deformation and breakage of the packaging box due to such as can be satisfactorily suppressed.

A second characteristic configuration according to the present invention is a cardboard packaging box having a storage space, wherein the front wall plate and the rear wall plate forming the front wall inner surface and the rear wall inner surface of the storage space are arranged between the front and back liners. to constitute the first cardboard which is formed a center core, a plurality of side wall plates which are separated form each side of the box body in a state of forming the inner surface of the peripheral wall of the storage space, the core in between the front and back of the liner Are formed of second cardboard having a larger number of layers than the first cardboard, and the plurality of side wall plates are adjacent to each other in an orientation in which the stacking direction of the second cardboard is perpendicular to the respective side surfaces. The end portions are arranged to face each other with the thickness of the second corrugated cardboard, and a window portion is formed on a part of the outer surface of the box so that the core can be visually recognized from the outside.

  According to the above configuration, since the part of the core that is a characteristic configuration of the cardboard can be visually recognized from the outside through the window provided on a part of the outer surface of the box, the box is made of cardboard. This can be easily confirmed.

  Therefore, even when a cardboard packaging box that looks and is strong like a wooden box is used as an export packaging material, it can be easily visually confirmed that it is made of cardboard that does not require disinfection such as fumigation. Therefore, it is possible to simplify the proof procedure for cardboard.

A third characteristic configuration according to the present invention is a cardboard packaging box having a storage space,
The front wall plate and the rear wall plate forming the front wall inner surface and the rear wall inner surface of the storage space are composed of first cardboards in which a core is formed between the front and back liners,
A plurality of side wall plates formed separately for each side surface of the box body in a state of forming the inner peripheral wall inner surface of the storage space, from the second cardboard having a larger number of core layers between the front and back liners than the first cardboard With composition
The plurality of side wall plates are arranged in an orientation in which the stacking direction of the second corrugated cardboard is orthogonal to the respective side surfaces, and adjacent ends are abutted by the layer thickness of the second corrugated cardboard,
Of the side wall plates, the remaining side wall plates except for one side wall plate serving as a lid are joined to the opposing surfaces of the front wall plate and the rear wall plate with an adhesive, and the side wall plate for the lid can be detached. It is in the point which comprises the box main body provided with the fitting recessed part.

  According to the above configuration, when the lid side wall plate is fitted and mounted in the fitting recess of the box body, the lid side wall plate is less likely to come into contact with other objects. It can be maintained in a closed position.

According to a fourth characteristic configuration of the present invention, the lid side wall plate is placed on the box body at a position opposite to the opposite end surfaces of the side wall portions facing the fitting recess in the box body. An attachment maintaining means for detachably attaching and maintaining the fitting recess of the main body is provided.

  According to the above configuration, even when the lid side wall plate fitted and mounted in the fitting recess of the box body comes into contact with another object, a force is applied to maintain the lid side wall plate in the mounting posture by the mounting maintaining means. Therefore, it is possible to suppress the position shift and dropout of the side wall plate for the lid.

According to a fifth feature of the present invention, the surface to be coated on the outer surface of the box including the joint surfaces of the side wall plate, the front wall plate, and the rear wall plate is applied to the tape with a part of the core exposed. The window portion is formed with the exposed portion of the core.

  According to the above configuration, when the surface to be coated on the outer surface of the box including the joint surfaces of the side wall plate, the front wall plate, and the rear wall plate and the exposed portion of the core is beautifully finished with tape, a part of the core is removed. Since it is coated with tape in an exposed state, a window for easily visually confirming that it is made of corrugated cardboard from the outside can be configured easily and easily.

The perspective view at the time of lid removal which shows the packaging box of 1st Embodiment Exploded perspective view of packaging box Perspective view from the top side of the box body when tape is finished Perspective view from the bottom side of the box body when tape finish Enlarged view of front wall plate (a), side wall plate (b) and rear wall plate (c) The perspective view at the time of lid opening which shows the packaging box of 2nd Embodiment Sectional view when the lid is opened (a) and when the lid is closed (b) The perspective view at the time of isolation | separation which shows the packaging box of 3rd Embodiment Sectional view of lid closing operation (a) and lid closing (b)

[First Embodiment]
1 to 5 show a packaging box in which a rectangular parallelepiped box having a storage space S for storing an object to be packaged such as a picture is made of cardboard.
This packaging box made of cardboard has a front wall plate A1 and a rear wall plate A2 that form a front wall inner surface A1a and a rear wall inner surface A2a of a storage space S, and a plurality of cores 1C between front and back liners 1A and 1B. A plurality of side wall plates B, which are formed from the formed first corrugated cardboard 1 and formed separately for each side surface (each side surface unit) of the box body in a state in which the peripheral wall inner surface Ba of the storage space S is formed, The number of layers of the core 2 </ b> C between 2 </ b> A and 2 </ b> B is configured from the second cardboard 2 that is greater than that of the first cardboard 1.

As shown in FIGS. 5 (a) and 5 (c), the first corrugated cardboard 1 is composed of reinforced corrugated cardboard (generally called 3A flute or AAA flute) which is an example of various forms of corrugated cardboard. Between the front and back liners 1A and 1B made of multi-layered cardboard that has been subjected to water-resistant processing or water-repellent processing, between the front and back liners 1A and 1B, a three-layer core 1C formed by corrugating (fluted processing) multi-layer cardboard And two layers of the middle liner 1D made of cardboard made of multi-layered paper are alternately fixed together by an adhesive.
This three-layer reinforced corrugated cardboard is a three-layer structure of a single-layer corrugated cardboard (A flute) AF having a thickness of 5 mm, and is approximately three times as thick as a common corrugated cardboard (A flute) AF (15 mm ).

As shown in FIG. 5 (b), the second corrugated cardboard 2 is composed of an AB flute ABF, which is an example of various forms of corrugated cardboard, having a seven-layer structure.
The AB flute ABF, which is the basic element, is formed by stacking a common corrugated cardboard (A flute) AF with a thickness of 5 mm and a general corrugated cardboard (B flute) BF with a thickness of 3 mm. is there.

  For this reason, the second corrugated cardboard 2 having a seven-layer structure of AB flute ABF corrugated multi-layer cardboard between the front and back liners 2A and 2B made of multi-layer cardboard that has been subjected to water-proof processing or water-repellent processing. 14 layers of cores 2C formed by die processing (fluted processing) and 13 layers of inner liners 2D made of cardboard made of multilayer paper are integrally fixed by an adhesive in an alternately stacked state.

  In addition, when the AB flute ABF has a seven-layer structure, in the present embodiment, the seven-layer AB flute is arranged so that the core 2C of the thin B flute BF is disposed at the portion in contact with the front and back liners 2A and 2B. The ABF is joined by reversing the orientation at an intermediate position in the thickness direction.

  By making each side wall plate B the second corrugated cardboard 2 having the AB flute ABF seven-layer structure as described above, the thickness of each side wall plate B in the stacking direction and the axis of the thin tubular hole 2E formed by the core 2C The width in the direction is substantially equal, and the cross-sectional shape of each side wall plate B is configured to be nearly square.

And as shown in FIG. 1, FIG. 2, as a structural member of a packaging box, it was comprised by the front wall board A1 and the rear wall board A2 of the 3 layer structure which have a rectangular wide surface area, and the rectangular parallelepiped block shape. It consists of four side wall plates B having a 14-layer structure.
Of the four side wall plates B, the remaining three side wall plates B1 to B3 except for one side wall plate B4 serving as a lid are three except for the opening side in the facing surfaces of the front wall plate A1 and the rear wall plate A2. A box provided with a fitting recess 3 which is fixed to an adhesive surface 1b of a band-shaped region along one side by an adhesive and into which a lid side wall plate B4 is detachably inserted on the opening side of the storage space S. A main body M is configured.

  In adhering the three side wall plates B1 to B3 of the box body M to the front wall plate A1 and the rear wall plate A2, each side wall plate B1 to B3 is a narrow tubular hole 2E formed by the core 2C of the second cardboard 2. Are disposed in an orientation in which the axial direction of the second cardboard 2 is orthogonal to the joint surface 1b of the front wall plate A1 and the rear wall plate A2, and the stacking direction of the second corrugated cardboard 2 is orthogonal to the respective side surfaces, The adjacent end portions of the three side wall plates B <b> 1 to B <b> 3 are integrally fixed together by an adhesive in a state where they are abutted at right angles with the layer thickness of the second cardboard 2.

As described above, the axial direction of the narrow tubular hole 2E formed by the core 2C of each side wall plate B1 to B3 of the box body M is on the joint surface 1b of the front wall plate A1 and the rear wall plate A2. By disposing in an orthogonal orientation, the pressure resistance against vertical external force acting on the front wall plate A1 and the rear wall plate A2 can be improved.
Further, by arranging the end portions of the side wall plates B adjacent in the circumferential direction to face each other with the layer thickness of the second corrugated cardboard 2, the pressure strength against external force acting on the side wall plates B1 to B3 can be improved. it can.

  Further, in a state where the three side wall plates B1 to B3 of the box body M are bonded to the front wall plate A1 and the rear wall plate A2, water-proof processing or water-repellent processing that is located on the front and back of each side wall plate B1 to B3 is performed. The liners 2A, 2B and the liners 1A, 1B, which are water-resistant or water-repellent, located on the front and back of the front wall plate A1 and the rear wall plate A2, are provided on the outer surface of the box body M and the storage space S. Since it is located in the inner surface which faces, the waterproofness and moisture resistance of the box main body M can be improved.

  When the lid side wall plate B4 is mounted in the fitting recess 3 of the box body M, the lid side wall plate B4 is also in the axial direction of the narrow tubular hole 2E formed by the core 2C of the second cardboard 2. Is set so that the box body M is fitted in an orientation that is orthogonal to the joint surface 1b of the front wall plate A1 and the rear wall plate A2 and the stacking direction of the second cardboard 2 is orthogonal to the respective side surfaces. The left and right side wall plates B1 and B3 facing the mating recess 3 are fitted and mounted in a state of being butted with the layer thickness of the second cardboard 2.

  In the state in which the side wall plate B4 for the lid is fitted and attached to the fitting recess 3 of the box body M to form the box body, the front and back liners which are subjected to water-proof processing or water-repellent processing on the side wall plate B4 for the lid Since 2A and 2B are located on the outer surface of the box and the inner surface facing the storage space S, the waterproof and moisture proof properties on the lid side can also be enhanced.

  In the box body M, the side wall plate B4 for the lid is located at the opposite portion between the end surfaces of the left and right side wall plates B1 and B3 facing the fitting recess 3 and the both sides in the longitudinal direction of the inner side surface of the side wall plate B4 for the lid. Is mounted on the fitting recess 3 of the box body M so as to be detachably mounted.

  This attachment maintaining means 4 includes one hook-and-loop fastener 4A provided with a plurality of hook-shaped or loop-shaped or mixed raised groups on a base fabric bonded to the entire end surfaces of both side wall plates B1 and B3 of the box body M; The other side fastener 4B is provided with a plurality of loop-shaped, hook-shaped or mixed raised groups on a base fabric adhered to the inner side surface of the lid side wall plate B4.

  In the box body M, the surface to be coated on the outer surface of the box including the joint surfaces of the side wall plates B1 to B3 and the front wall plate A1 and the rear wall plate A2 and the exposed portions of the cores 1C and 2C is covered with the tape 5. Cover well.

  Further, in the box body in which the lid side wall plate B4 is fitted and mounted on the fitting recess 3 of the box body M, the joint surfaces of the box body M and the lid side wall plate B4 and the exposure of the cores 1C and 2C are exposed. The surface to be coated on the outer surface of the box including the portions and the like is covered with the tape 5 in a good appearance.

  At this time, in a state where a part of the cores 1C, 2C located on the surface to be coated is exposed, the tape 5 is coated, and the exposed portions of the cores 1C, 2C not covered with the tape 5 are provided. A window portion 6 for visually recognizing the cores 1C and 2C, which are characteristic structures of cardboard, from the outside is formed on a part of the outer surface of the box.

  Incidentally, in the present embodiment, the exposed portions of the cores 1C and 2C to be the window portions 6 are formed on both sides in the longitudinal direction of the bottom surface of the box body M, and both longitudinal ends of the side wall plate B4 for the lid. The exposed portions of the cores 1C and 2C to be the window portion 6 are formed.

  Further, by covering the surface of the box with the surface to be coated with the tape 5, the surface to be coated on the outer surface of the box can be finished beautifully, and the side wall plates B1 to B3 and the front wall plate A1 of the box body M and the rear It is possible to prevent peeling at each joint surface with the wall plate A2 and dropping of the side wall plate B4 for the lid.

  When the surface to be coated on the outer surface of the box including the joint surfaces of the side wall plate B, the front wall plate A1 and the rear wall plate A2 and the exposed portions of the cores 1C, 2C is beautifully finished with the tape 5, the cores 1C, 2C Since part of the cover is covered with the tape 5 except for the visible exposed part, the window part 6 for easily visually confirming that it is made of corrugated cardboard from the outside can be configured easily and easily. .

  Therefore, even when a cardboard packaging box that looks and is strong like a wooden box is used as an export packaging material, it can be easily visually confirmed that it is made of cardboard that does not require disinfection such as fumigation. Therefore, it is possible to simplify the proof procedure for cardboard.

  An example of the tape 5 is a gum tape (water tape), an adhesive tape, or the like obtained by applying a paste material to kraft paper and drying it.

  In the above-described embodiment, when the window portion 6 for visually recognizing a part of the cores 1C and 2C, which is a characteristic configuration of the cardboard, is formed on a part of the outer surface of the box body, Although an exposed part that can be visually observed from the outside is formed in part of 2C, the exposed part may be hermetically covered with a transparent tape, film, or the like.

  Moreover, in the above-mentioned embodiment, although the form in the case of using a packaging box as a packing material for export was demonstrated, when not using for a packing material for export, in order to confirm visually that it is the product made from corrugated cardboard from the outside easily. The window portion 6 is omitted, and the core 5 is covered with the tape 5 in a state where the cores 1C and 2C are not exposed to the outside.

  Furthermore, in the above-mentioned embodiment, the axial direction of the narrow tubular hole 2E formed by the core 2C of the second corrugated cardboard 2 is set to the joint surface 1b of the front wall plate A1 and the rear wall plate A2 with the side wall plates B1 to B4. The side walls B1 to B4 are formed by the core 2C of the second corrugated cardboard 2 while being arranged in an orientation that is orthogonal to each other and the stacking direction of the second corrugated cardboard 2 is perpendicular to the respective side surfaces. The axial direction of the narrow tubular hole 2E is parallel to the joining surface 1b of the front wall plate A1 and the rear wall plate A2, and the stacking direction of the second corrugated cardboard 2 is arranged in an orientation that is orthogonal to the respective side surfaces. May be.

[Second Embodiment]
6 and 7 show another embodiment in which the box shape of the cardboard packaging box is changed. In this embodiment, the front wall plate A1 and the rear wall plate A2 are provided with a connection length substantially corresponding to the thickness of the side wall plate B, and the boundary lines P1, P2 between the front wall plate A1 and the rear wall plate A2 Are integrally formed via a cardboard connecting plate A3 that can be bent at a right angle.

  The connecting plate A3 is integrally configured using an A flute AF on one end side in the stacking direction of the three-layered reinforced cardboard (3A flute) constituting the front wall plate A1 and the rear wall plate A2.

  Then, four side wall plates B1 to B4 are fixed to the inner surface of the rear wall plate A2 along the four side edges with an adhesive, and the packaged material is stored in the storage space S partitioned by the four side wall plates B1 to B4. After that, the front wall plate A1 serving as a lid is folded along the boundary lines P1 and P2 with the connecting plate A3, and the folded front wall plate A1 and the four side wall plates B1 to B4 are bonded with an adhesive, tape, or the like. Stick.

  In this 2nd Embodiment, the box main body M is comprised from back wall board A2 and four side wall board B1-B4, and front wall board A1 is comprised by the lid | cover.

  The surface to be coated on the outer surface of the box including the joint surfaces of the rear wall plate A2 and the side wall plates B1 to B4 constituting the box body M and the exposed portions of the cores 1C and 2C, etc. , 2C is covered with the tape 5 in a state where the part can be visually recognized from the outside (a state where the window portion 6 is formed).

  Further, even in a box state in which an object to be packaged is stored in the storage space S of the box body M and the front wall plate A1 serving as a lid is in contact with or bonded to the four side wall plates B1 to B4, A state in which a part of the cores 1C and 2C can be visually recognized from the outside (window) as necessary, including the joint surface with the front wall plate A1 and the exposed surface of the cores 1C and 2C. In the state where the portion 6 is formed), the tape 5 is coated.

  In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

[Third Embodiment]
8 and 9 show another embodiment in which the box shape of the cardboard packaging box is changed. In this embodiment, four side wall plates B1 to B4 are fixed to the inner surface of the front wall plate A1 along the outer peripheral edge thereof with an adhesive, and the side wall of the front wall plate A1 is attached to the rear wall plate A2. Four side wall plates B1 to B4 are fixed with an adhesive so as to be fitted in the plates B1 to B4.

  In the third embodiment, a box body M having a storage space S is configured from the rear wall plate A2 and the four side wall plates B1 to B4, and a lid is formed from the front wall plate A1 and the four side wall plates B1 to B4. It is configured.

  Then, an object to be packaged is stored in the storage space S of the box body M, and the side wall plates B1 to B4 on the large size side of the lid are externally fitted to the side wall plates B1 to B4 on the small size side of the box body M. And a surface to be coated on the outer surface of the box including the joint surface between the rear wall plate A2 constituting the box body M and the tips of the side wall plates B1 to B4 constituting the lid and the exposed portions of the cores 1C and 2C is necessary. Accordingly, a part of the cores 1C and 2C is covered with the tape 5 in a state where the cores 1C and 2C are visible from the outside (a state where the window portion 6 is formed).

  In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

[Other Embodiments]
(1) In the first embodiment described above, the first corrugated board 1 serving as the constituent base material of the front wall board A1 and the rear wall board A2 is composed of reinforced cardboard having a three-layer structure, and is separately formed for each side of the box. The second corrugated board 2 constituting the base material of each side wall plate B is composed of a seven-layer structure of AB flute ABF, but the first corrugated board serving as the constituent base material of the front wall plate A1 and the rear wall plate A2. 1 may be composed of reinforced corrugated cardboard having a two-layer structure, and the second corrugated cardboard 2 serving as a constituent substrate of each side wall plate B may be composed of reinforced corrugated cardboard having a three-layer structure.
Further, the first corrugated board 1 serving as the constituent base material of the front wall board A1 and the rear wall board A2 is not limited to the above-mentioned three-layer structure or two-layer structure reinforced cardboard, and the thickness of the core 1C is When a strengthening treatment is applied to increase the pressure strength of ordinary cardboard (A flute) AF, such as by thickening or adding a paper strength enhancer such as polyacrylamide or modified starch. Alternatively, the first corrugated cardboard 1 may be used.
In short, as the second corrugated cardboard 2 serving as the constituent substrate of the plurality of side wall plates B, the core layer between the liners on the front and back sides than the first corrugated cardboard 1 serving as the constituent substrate of the front wall plate A1 and the rear wall plate A2. Anything with a large number is sufficient.

  (2) In the above-described first embodiment, the rectangular parallelepiped packaging box has been described. However, the technique of the present invention can be applied to a polygonal box such as a triangle, pentagon, hexagon, or octagon. it can.

  (3) In the first embodiment described above, the mounting maintaining means 4 for detachably mounting the side wall plate B4 for the lid to the fitting recess 3 of the box body M is constituted by a hook-and-loop fastener. May be composed of buttons or the like.

  (4) Although the packaging box in which one storage space S is formed has been described, a packaging box having two or more storage spaces S may be provided in the first embodiment.

  (5) In the first embodiment described above, the core 1C of the first corrugated cardboard 1 and the core 2C of the second corrugated cardboard 2 are configured in a wave shape, but may be configured in a honeycomb shape.

  (6) In the above-described first embodiment, the front wall inner surface A1a, the rear wall inner surface A2a, and the peripheral wall inner surface Ba of the storage space S are each formed of corrugated cardboard, but the front wall inner surface A1a, the rear wall inner surface A2a, and the peripheral wall inner surface You may attach buffer materials, such as rubber | gum and a foam material, to each of Ba.

  The present invention can be suitably used for a cardboard packaging box having a storage space.

1: 1st corrugated cardboard 1A: Liner 1B: Liner 1C: Core 2: 2nd corrugated cardboard 2A: Liner 2B: Liner 2C: Center core 2E: Narrow tubular hole 3: Fitting recess 4: Mounting maintenance means 5: Tape A1: Front wall plate A1a: Front wall inner surface A2: Rear wall plate A2a: Rear wall inner surface B: Side wall plate B1: Side wall plate B2: Side wall plate B3: Side wall plate B4: Side wall plate Ba: Surrounding wall inner surface M: Box body S: Storage space

Claims (5)

A cardboard packaging box having a storage space,
The front wall plate and the rear wall plate forming the front wall inner surface and the rear wall inner surface of the storage space are composed of first cardboards in which a core is formed between the front and back liners,
A plurality of side wall plates formed separately for each side surface of the box body in a state of forming the inner peripheral wall inner surface of the storage space, from the second cardboard having a larger number of core layers between the front and back liners than the first cardboard With composition
The plurality of side wall plates are arranged in an orientation in which the stacking direction of the second corrugated cardboard is perpendicular to the respective side surfaces between the opposing surfaces of the front wall plate and the rear wall plate , and adjacent end portions are The two cardboards are arranged to face each other ,
The packaging in which the side wall plate is oriented such that the axial direction of the narrow tubular hole formed by the core of the second corrugated cardboard is perpendicular to the joining surface of the front wall plate and the rear wall plate. box. A cardboard packaging box having a storage space,
The front wall plate and the rear wall plate forming the front wall inner surface and the rear wall inner surface of the storage space are composed of first cardboards in which a core is formed between the front and back liners,
A plurality of side wall plates formed separately for each side surface of the box body in a state of forming the inner peripheral wall inner surface of the storage space, from the second cardboard having a larger number of core layers between the front and back liners than the first cardboard With composition
The plurality of side wall plates are arranged in an orientation in which the stacking direction of the second corrugated cardboard is orthogonal to the respective side surfaces, and adjacent ends are abutted by the layer thickness of the second corrugated cardboard,
The packaging box which formed the window part which can visually recognize the said center from the outside in a part of outer surface of the said box. A cardboard packaging box having a storage space,
The front wall plate and the rear wall plate forming the front wall inner surface and the rear wall inner surface of the storage space are composed of first cardboards in which a core is formed between the front and back liners,
A plurality of side wall plates formed separately for each side surface of the box body in a state of forming the inner peripheral wall inner surface of the storage space, from the second cardboard having a larger number of core layers between the front and back liners than the first cardboard With composition
The plurality of side wall plates are arranged in an orientation in which the stacking direction of the second corrugated cardboard is orthogonal to the respective side surfaces, and adjacent ends are abutted by the layer thickness of the second corrugated cardboard,
Of the side wall plates, the remaining side wall plates except for one side wall plate serving as a lid are joined to the opposing surfaces of the front wall plate and the rear wall plate with an adhesive, and the side wall plate for the lid can be detached. A packaging box comprising a box body with a fitting recess . The side wall plate for the lid is detachably attached to the fitting concave portion of the box body at the opposite portion between the side wall plate for the lid and the end surfaces of the side wall portions facing the fitting concave portion in the box body. 4. The packaging box according to claim 3, further comprising a mounting maintaining means for maintaining . The surface to be coated on the outer surface of the box including the joint surfaces of the side wall plate, the front wall plate, and the rear wall plate is covered with a tape with a part of the core exposed, and the exposed portion of the core The packaging box according to claim 2, wherein the window portion is formed .

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