JP2022048610A - Packing box - Google Patents

Abstract

To provide a packing box capable of effectively preventing bulging of a side wall with little influence on caser appropriateness.SOLUTION: A wraparound packing box 1 has a step misaligned part formed in a longitudinal rule mark L30 extending in a longitudinal direction in a used state. In the step misaligned part, a vertical middle part L31 of the longitudinal rule mark L30 formed at the edge of a side wall 12 is offset outside with respect to vertical both ends L32 of the longitudinal rule mark L30, and notches 33, 33 are formed from both ends of the offset middle part L31 of the longitudinal rule mark L30 toward the side wall 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a packaging box.

Corrugated cardboard packaging boxes for accommodating PET bottles, cans, etc. include front and rear end walls, left and right side walls, bottom plates connected to both end walls and the lower edges of both side walls, both end walls, and There is a packaging box called a wrap round case, which comprises a series of top plates on the upper edges of both side walls.

In the packaging box, when a plurality of packaging boxes are stacked with the contents housed, when the side wall of the lower packaging box is pushed by a load from above, the side wall is deformed so as to bulge outward. "Body swelling" may occur.

As a conventional packaging box, there is a box in which one straight main ruled line and a double ruled line frame are alternately arranged at a boundary portion (corner portion) between a side wall and a top plate (see, for example, Patent Document 1). ).
In such a packaging box, a region bent at a right angle in the main ruled line and an inclined region in the ruled line frame are formed at the boundary portion between the side wall and the top plate. When a load is applied to the packaging box from above, the inclined region in the ruled line frame is preferentially deformed over the region bent at a right angle, so that the swelling of the side wall can be suppressed.

Japanese Unexamined Patent Publication No. 2012-35883

In the conventional packaging box described above, since the work for suppressing the body swelling is applied on the horizontal ruled line, the bending strength changes on the ruled line. Therefore, there is a problem that the bending straightness on the ruled line is lowered, which affects the suitability of the caser.

Therefore, it is an object of the present invention to provide a packaging box which has little influence on the suitability of the caser and can effectively prevent the body swelling of the side wall.

The first invention for solving the above-mentioned problems is a wrap-round type packaging box, in which a stepped portion is formed in a vertical ruled line extending in the vertical direction in a used state. In the stepped portion, the vertical intermediate portion of the vertical ruled line formed on the edge of the side wall is offset outward with respect to the upper and lower ends of the vertical ruled line, and is offset to the side wall. It is characterized in that a pair of notches starting from both ends of the intermediate portion is formed.

The second invention for solving the above-mentioned problems includes a square tubular wall portion, a bottom plate connected to the lower edge portion of the wall portion, and a top plate connected to the upper edge portion of the wall portion. The wall portion has a pair of end walls and a pair of side walls, and the end walls include a pair of upper and lower first flaps connected to the edges of the top plate and the bottom plate, and a pair of the above. A wrap-round type packaging box configured to include a pair of left and right second flaps connected to the edge of the side wall, and the vertical ruled line of the connecting portion between the side wall and the second flap. , A stepped portion is formed. In the stepped portion, the vertical intermediate portion of the vertical ruled line is offset in a direction away from the side wall with respect to the upper and lower end portions of the vertical ruled line, and both ends of the offset intermediate portion are offset on the side wall. It is characterized in that a pair of notches starting from is formed.

According to the packaging box of the present invention, when the packaging boxes are stacked, a force that pulls the side wall (sheet) that is about to swell toward the end wall side connected to the side wall acts, so that the body swelling can be suppressed. .. Further, since the vertical ruled line is bent after the horizontal ruled line is bent to form a cylindrical shape, it does not easily affect the suitability of the caser. Since the stepped portion is formed on such a vertical ruled line, the influence on the suitability of the caser can be small.

In the packaging box of the present invention, it is preferable that the pair of the cuts are separated from each other toward the tip side. According to such a configuration, the area of the portion that pulls the side wall becomes large, so that the effect of suppressing the body swelling becomes large.

In the packaging box of the present invention, the second flap and the first flap are adhered to each other at two places, one on the side of the intermediate portion of the vertical ruled line and the other on the side of the end of the vertical ruled line. Is preferable. According to such a configuration, poor adhesion does not occur due to the step deviation of the ruled line, and the pulling effect of the side wall surface is preferably exhibited.

According to the packaging box of the present invention, the influence on the suitability of the caser can be reduced, and the swelling of the side wall can be effectively prevented.

It is a perspective view which looked at the packaging box which concerns on embodiment of this invention from the front upper right. It is a figure which showed the blank sheet of the packaging box which concerns on embodiment of this invention. It is an enlarged side view which showed the step deviation part of the packaging box which concerns on embodiment of this invention. It is a perspective view which showed the action state of the pulling force of the packaging box which concerns on embodiment of this invention.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In the following description, the front-back and left-right directions are set for convenience in explaining the packaging box of the present embodiment, and do not limit the configuration and usage state of the packaging box.

As shown in FIG. 1, the packaging box 1 of the present embodiment is a wrap-round type cardboard box. The packaging box 1 includes a square tubular wall portion 10, a bottom plate 30 connected to the lower edge portion of the wall portion 10, and a top plate 20 connected to the upper edge portion of the wall portion 10. ..
The wall portion 10 is formed in the shape of a quadrangular cylinder in a plan view, and includes front and rear end walls 11, 11 and left and right side walls 12, 12.

As shown in FIG. 2, the packaging box 1 of the present embodiment is formed by folding a blank sheet S obtained by cutting out a corrugated cardboard sheet into mountain folds or valley folds at each polygonal line. The blank sheet S shown in FIG. 2 is arranged so that the inner surface side can be seen.
The polygonal line of the blank sheet S is a ruled line (pressed ruled line) formed by linearly pressing the surface of the blank sheet S. In addition, an intermittent notch may be formed in the ruled line. By doing so, it becomes easy to bend the blank sheet S at the polygonal line. Further, a polygonal line may be formed by intermittently forming a half-cut notch that cuts only the surface of the sheet or a notch that penetrates the sheet to form a linear shape.

As shown in FIG. 1, the bottom plate 30 is a quadrangular flat plate. A left side wall 12 is connected to the left edge of the bottom plate 30 via a polygonal line, and a right side wall 12 is connected to the right edge of the bottom plate 30 via a polygonal line. The left and right side walls 12, 12 are the same quadrangular wall body, and are formed perpendicular to the bottom plate 30.

A top plate 20 is continuously provided on the upper edge of the left side wall 12 via a polygonal line. The top plate 20 is the same quadrangular flat plate as the bottom plate 30, and is formed perpendicular to the left side wall 12.
By bending the blank sheet S (see FIG. 2) along each ruled line and joining the joining pieces 13 connected to the upper edge of the right side wall 12 to the inner surface of the top plate 20, the right side wall 12, the bottom plate 30, The left side wall 12 and the top plate 20 are formed in a square tube shape.

The front end wall 11 of the packaging box 1 has a pair of upper and lower outer flaps 14, 14 (“first flaps” in the claims), which are connected to the leading edges of the top plate 20 and the bottom plate 30, and left and right. It is provided with a pair of left and right inner flaps 15, 15 (“second flaps” within the scope of claims), which are connected to the leading edges of the side walls 12, 12. The upper and lower outer flaps 14, 14 are overlapped and joined to the outer surfaces of the left and right inner flaps 15, 15. A gap is formed at predetermined intervals in the vertical direction between the tips of the upper and lower outer flaps 14, 14. A gap is formed at predetermined intervals in the left-right direction between the tips of the left and right inner flaps 15 and 15. A handle hole 17 is formed in the upper outer flap 14. The handle hole 17 is pushed open when the packaging box 1 is lifted.

The rear end wall 11 of the packaging box 1 has the same configuration as the front end wall 11, and is composed of a pair of upper and lower outer flaps 14, 14 and a pair of left and right inner flaps 15, 15.

In the packaging box 1, the bottom plate 30 and the left and right side walls 12, 12 are connected to each other via the horizontal ruled line L10. Further, in the packaging box 1, the top plate 20 and the left and right side walls 12, 12 are connected to each other via the horizontal ruled line L10. The horizontal ruled line L10 is a linear ruled line (pressed ruled line) extending in the front-rear direction.

In the packaging box 1, the bottom plate 30 and the front and rear outer flaps 14, 14 are connected to each other via the horizontal ruled line L20. Further, the top plate 20 and the front and rear outer flaps 14, 14 are connected to each other via the horizontal ruled line L20. The horizontal ruled line L20 is a linear ruled line (pressed ruled line) extending in the left-right direction.

In the packaging box 1, the left side wall 12 and the front and rear inner flaps 15 and 15 are connected to each other via the vertical ruled line L30. Further, the right side wall 12 and the front and rear inner flaps 15 and 15 are connected to each other via the vertical ruled line L30. The vertical ruled line L30 is a linear ruled line (pressed ruled line) extending in the left-right direction.

A stepped portion is formed on the vertical ruled line L30. In the stepped portion, a part of the vertical ruled line L30 is offset with respect to the remaining portion. Specifically, the vertical intermediate portion (part) L31 of the vertical ruled line L30 is offset outward with respect to the upper and lower left end portions (remaining portions) L32 and L32 of the vertical ruled line, and the blank sheet S In the state of, the end portion of the side wall 12 has entered the inner flap 15. The offset length is, for example, approximately 5 mm. As shown in FIG. 3, the upper and lower lengths of the intermediate portion L31 are set so as to overlap approximately half of the outer flap 14 on the tip end side in the overhanging direction. That is, the upper end of the intermediate portion L31 reaches the central portion in the vertical direction of the upper outer flap 14, and the lower end of the intermediate portion L31 reaches the central portion in the vertical direction of the lower outer flap 14.

A pair of notches 33 extending from both ends of the intermediate portion L31 toward the other end are formed at one end of the side wall 12 in the front-rear direction. The notch 33 is formed in a straight line. The pair of upper and lower cuts 33, 33 are separated from each other toward the tip portion (that is, as they move away from the vertical ruled line L30), and have a C-shaped shape when viewed from the side. The length of the notch 33 is, for example, approximately 40 mm. In addition, due to the strength of the packaging box 1, it is preferable that the notch 33 is formed so as to be separated from the horizontal ruled line L10 by a predetermined length.

As shown in FIG. 1, the adhesion point between the inner flap 15 and the outer flap 14 is a portion P1 (tip of the intermediate portion) located on the side of the intermediate portion L31 in the overlapping portion of the inner flap 15 and the outer flap 14. And the portion P2 (the tip end side of the outer end portion of the intermediate portion) located on the side of the end portion L32. At the joining points P1 and P2, a hot melt adhesive is laid horizontally on the outer surface of the inner flap 15.

In the packaging box 1 as described above, as shown in FIGS. 2 and 3, the intermediate portion L31 of the vertical ruled line L30 of the inner flap 15 projects slightly outward from the end portion L32. Therefore, when the blank sheet S is bent and box-made, the portion sandwiched between the cuts 33 and 33 of the side wall 12 is in a state of being inclined inward, and when the inner flap 15 is adhered to the outer flap 14 in this state, the inner flap is formed. 15 is in a state of being pushed by the outer flap 14. As a result, as shown in FIG. 4, a force F that pulls the side wall 12 toward the end wall 11 acts on the side wall 12. That is, the side wall 12 is pulled to both the front and rear sides and tension is applied to the side wall 12, so that the side wall 12 is less likely to swell outward. Therefore, even when the packaging boxes 1 are stacked, the body swelling can be efficiently suppressed.

When assembling the packaging box 1, the top plate 20, the bottom plate 30, and the pair of side walls 12, 12 are assembled in a cylindrical shape with the contents such as PET bottles arranged on the bottom plate 30, and then the end wall 11 is assembled. To assemble. That is, the vertical ruled line L30 is bent after the horizontal ruled line L20 is bent to form a box. Further, when the vertical ruled line L30 is bent, the contained object becomes a weight (holding) and the side wall 12 is fixed, so that the side wall 12 does not move even if the inner flap 15 is bent. In this way, even if the stepped portion is formed on the vertical ruled line L30, the packaging box 1 can be assembled by the same procedure as before, so that the influence on the suitability of the caser can be suppressed.

In the present embodiment, the pair of notches 33, 33 extending from both ends of the intermediate portion L31 of the vertical ruled line L30 has a C-shape that separates from each other toward the tip side, and thus pulls the side wall 12. The area of the part becomes large. Therefore, the range in which the force is applied to the side wall 12 becomes wide and it becomes difficult to deform, so that the effect of suppressing the body swelling becomes large.

In the present embodiment, the inner flap 15 and the outer flap 14 are adhered to each other at two places, the side of the intermediate portion L31 and the side of the end portion L32, so that even if a step is generated in the inner flap 15. , The outer flaps 14 can be glued on both sides of the step. Therefore, since the adhesive defect does not occur due to the step deviation of the ruled line, the pulling effect of the side wall 12 is preferably exhibited.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the spirit of the present invention. In the packaging box 1 of the present embodiment, the notches 33 and 33 extending from the intermediate portion L31 of the vertical ruled line L30 have a C-shape in which the separation distance on the tip side is widened, but the present invention is not limited to this. do not have. The cuts 33 and 33 may be parallel to each other. Even if the cuts 33 and 33 are parallel to each other, a certain effect of suppressing the body swelling can be obtained. It is preferable because the effect of suppressing the above is increased.

Although the packaging box 1 of the present embodiment is made of corrugated cardboard, the packaging box may be formed of various known paperboards.

1 Packaging box 10 Wall 11 End wall 12 Side wall 14 Outer flap (first flap)
15 inner flap (second flap)
20 Top plate 30 Bottom plate 33 Notch L10 Horizontal ruled line L30 Vertical ruled line L31 Intermediate part L32 End part

Claims (4)

It is a wrap-round type packaging box.
A stepped portion is formed on the vertical ruled line extending in the vertical direction in the used state.
In the stepped portion, the vertical intermediate portion of the vertical ruled line formed on the edge of the side wall is offset outward with respect to the upper and lower ends of the vertical ruled line.
A packaging box characterized in that a pair of notches starting from both ends of the offset intermediate portion is formed on the side wall. It is provided with a square cylindrical wall part, a bottom plate connected to the lower edge part of the wall part, and a top plate connected to the upper edge part of the wall part.
The wall portion has a pair of end walls and a pair of side walls.
The end wall includes a pair of upper and lower first flaps connected to the edges of the top plate and the bottom plate, and a pair of left and right second flaps connected to the edges of the side wall. It is a wrap-round type packaging box.
A stepped portion is formed on the vertical ruled line of the connecting portion between the side wall and the second flap.
In the stepped portion, the vertical intermediate portion of the vertical ruled line is offset in the direction away from the side wall with respect to the upper and lower both ends of the vertical ruled line.
A packaging box characterized in that a pair of notches starting from both ends of the offset intermediate portion is formed on the side wall. The packaging box according to claim 1 or 2.
A packaging box characterized in that the pair of notches extending from both ends of the intermediate portion are separated from each other toward the tip end side. The packaging box according to claim 2.
The packaging is characterized in that the second flap and the first flap are adhered to each other at two places, one on the side of the intermediate portion of the vertical ruled line and the other on the side of the end of the vertical ruled line. box.

Images