JP2009154955A - Corrugated fiberboard carton - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corrugated fiberboard carton capable of easily peeling an outer flap from an inner flap when it is opened and preventing a sudden injury from occurring. <P>SOLUTION: In the corrugated fiberboard carton, both end opening parts of a barrel part 1a are sealed by turning up a pair of the outer flaps 7 and 8 on a pair of the inner flaps 9 and 10 and bonding them with an adhesive S. On the joint parts of a pair of the outer flaps 7 and 8, recessed parts 20 extending in the intersecting direction to the coating direction of the adhesive S are provided. It is thereby possible to weaken appropriately the joint strength and to easily peel off the outer flaps 7 and 8 from the inner flaps 9 and 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a corrugated cardboard carton in which a blank sheet cut with a ruled line is cut along a ruled line and bonded with an adhesive.

  Conventionally, as a container for storing powder (contents) such as powder detergent, a carton is used, which is made by folding a blank sheet cut into a paperboard along a ruled line and bonding it with an adhesive. ing. Moreover, since such a carton has a substantially rectangular parallelepiped shape, it can be packed in a corrugated carton for transportation without any gap, and is excellent in loading efficiency.

  By the way, what is called a wrap round type is generally used for the corrugated cardboard carton for transportation from the viewpoints of loadability in a product packaging process, ease of taking out at a store, packaging strength, cost, and the like.

  In this wrap round type corrugated cardboard carton, after the product is stored in a rectangular cylindrical body portion where one opposing side plate and the other opposing side plate face each other, the openings at both ends of the body portion are sealed. A pair of inner flaps that are foldably connected to one opposite side plate are folded on a pair of outer flaps that are foldably connected to another opposite side plate, and bonded with an adhesive. . And in this corrugated cardboard carton, it is possible to take out the product by separating the cut band provided on the side plate of the trunk part along the perforation and taking out the product.

  Further, in such a corrugated carton for transportation, since the tips of the pair of outer flaps are brought into contact with each other at the time of sealing, a finger is put into the gap between the butted portions and the outer flap is peeled off from the inner flap. , Sometimes open. However, in such an opening method, if the gap between the butted portions of the pair of outer flaps is small, it is difficult to open, and care must be taken because the fingers may be cut at the end face of the outer flap at the time of opening.

For this reason, in the conventional corrugated cardboard carton, the device for peeling off an outer flap from an inner flap easily at the time of opening is performed (for example, refer patent documents 1-3). However, even when such countermeasures are taken, there is a possibility of being injured unexpectedly, so further improvement is required.
JP 2002-370728 A JP-A-2005-59921 Japanese Patent Laid-Open No. 2002-19770

  The present invention has been proposed in view of such conventional circumstances, and an object of the present invention is to provide a corrugated cardboard carton in which an outer flap can be easily peeled off from an inner flap at the time of opening, and an unexpected injury can be prevented. And

  In order to achieve this object, the invention according to claim 1 comprises a blank sheet cut into a cardboard paper with a ruled line, and the blank sheet is sequentially connected with the first ruled line between the four side plates; The adhesive margin connected to the side plate at one end across the first ruled line, the four side plates and the adhesive margin are bent along each first ruled line, and the other side plate is attached to the adhesive margin to form a rectangular cylinder A pair of outer flaps connected to one opposing side plate across the second ruled line along the opening portions at both ends of the body portion, and a third portion along the opening portions at both ends of the body portion. A pair of inner flaps connected to other opposing side plates across the ruled line, the pair of inner flaps being folded along each third ruled line, and the pair of outer flaps being folded along each second ruled line, By folding the pair of outer flaps on the inner flap and joining them with an adhesive A corrugated cardboard carton in which the opening portions at both ends of the body portion are sealed, and a concave portion extending in a direction intersecting with the direction of application of the adhesive is provided at a joint portion of the pair of outer flaps. is there.

  The invention according to claim 2 is the cardboard carton according to claim 1, wherein a plurality of recesses are provided side by side in the adhesive application direction.

  The invention according to claim 3 is the corrugated cardboard carton according to claim 1 or 2, wherein the recess is formed by pressing a surface of the outer flap that is joined to the inner flap. is there.

  As described above, in the corrugated cardboard carton according to the present invention, the joint strength of the pair of outer flaps is moderately weakened by providing the recess extending in the direction intersecting the adhesive application direction, It is possible to easily peel off the outer flap from the inner flap.

  Moreover, in the corrugated cardboard carton according to the present invention, it is possible to arbitrarily adjust the bonding strength of the outer flap to the inner flap by providing a plurality of such recesses in the adhesive application direction.

  Moreover, in the corrugated cardboard carton according to the present invention, it is possible to easily form such a concave portion by pressing the surface of the outer flap that is joined to the inner flap.

Hereinafter, a corrugated carton to which the present invention is applied will be described in detail with reference to the drawings.
(First embodiment)
First, the corrugated cardboard carton shown as the first embodiment will be described.
This corrugated cardboard carton is provided with a blank sheet 1 formed by corrugating cardboard paper as shown in FIG. 1 and cutting it into a predetermined shape.

  The blank sheet 1 has four side plates 2, 3, 4, and 5 that are sequentially connected with the first ruled line L1 interposed therebetween, and a glue margin 6 that is connected to the side plate 2 at one end with the first ruled line L1 interposed therebetween. ing. Then, as shown in FIGS. 2 and 3, the blank sheet 1 is formed by bending these four side plates 2, 3, 4, 5 and the glue margin 6 along each first ruled line L 1. The side plate 5 is joined with an adhesive to form a square cylindrical body 1a.

  That is, the blank sheet 1 is a rectangular cylindrical body formed by facing one opposing side plate (referred to as a main panel) 2 and 4 and the other opposing side plates (referred to as side panels) 3 and 5. Part 1a is configured. In addition, the width | variety of the trunk | drum 1a is made wider than the width | variety of a pair of side panels 3 and 5 which also makes a rectangle the pair of main panels 2 and 4 which make a rectangle.

  Further, the blank sheet 1 has a pair of outer flaps 7 and 8 connected to the main panels 2 and 4 across the second ruled line L2 along the opening portions at both ends of the body portion 1a, and the opening portions at both ends of the body portion 1a. It has a pair of inner flaps 9 and 10 connected to the side panels 3 and 5 across the third ruled line L3.

  Among these, the outer flaps 7 and 8 are formed to have a width substantially coincident with the main panels 2 and 4, and when the outer flaps 7 and 8 are bent at a substantially right angle toward the inside of the trunk portion 1 a, Is formed. On the other hand, the inner flaps 9, 10 are formed with a width that substantially matches the side panels 3, 5 and at a height that matches the outer flaps 7, 8.

  In this corrugated cardboard carton, as shown in FIG. 2, after the pair of inner flaps 9 and 10 are bent along the third ruled line L3, the pair of outer flaps 7 and 8 are bent along the second ruled line L2. The pair of inner flaps 9 and 10 are folded into a pair of outer flaps 7 and 8. Then, by joining the pair of outer flaps 7 and 8 to the pair of inner flaps 9 and 10 with the adhesive S, it is possible to seal the openings at both ends of the body portion 1a.

  By the way, in the corrugated cardboard carton to which the present invention is applied, as shown in FIG. A plurality of the recesses 20 are provided side by side in the direction in which the adhesive S is applied.

  These recesses 20 are formed by pressing the surfaces of the outer flaps 7 and 8 that are joined to the inner flaps 9 and 10. A plurality of adhesives S are applied side by side so as to straddle the plurality of recesses 20.

  In the corrugated cardboard carton having the above-described configuration, the ends of the pair of outer flaps 7 and 8 are in abutment with each other at the time of sealing shown in FIG. The flaps 7 and 8 are peeled off from the inner flaps 9 and 10. Thereby, it can be set as the opened state shown in FIG.

  At this time, since the concave portion 20 extending in the direction intersecting the application direction of the adhesive S described above is provided in the joint portion of the pair of outer flaps 7 and 8, the joint strength is moderately reduced by the concave portion 20. The outer flaps 7 and 8 can be easily peeled off from the inner flaps 9 and 10.

  As described above, in the cardboard carton to which the present invention is applied, the outer flaps 7 and 8 can be easily peeled off from the inner flaps 9 and 10 at the time of opening, and a finger is put on the end face of the outer flaps 7 and 8 at the time of opening. It is also possible to prevent cutting.

(Second Embodiment)
Next, a corrugated cardboard carton shown in FIG. 4 will be described as a second embodiment.
This corrugated carton is provided with a blank sheet 31 formed by putting ruled lines on corrugated cardboard as shown in FIG. 4 and cutting it into a predetermined shape.

  The blank sheet 31 has four side plates 32, 33, 34, 35 sequentially connected with the first ruled line L1 interposed therebetween, and a glue margin 36 connected with the side plate 32 at one end with the first ruled line L1 interposed therebetween. ing. The blank sheet 31 is formed by bending the four side plates 32, 33, 34, 35 and the glue margin 36 along the first ruled lines L1 and joining the other side plate 35 to the glue margin 36 with an adhesive. By this, a square cylindrical body (not shown) is formed.

  That is, the blank sheet 31 has a rectangular cylindrical body formed by facing one opposing side plate (referred to as a main panel) 32, 34 and the other opposing side plates (referred to as side panels) 33, 35. Parts. In addition, the width | variety of the trunk | drum is made into the width | variety of the pair of main panels 32 and 34 which make a rectangle wider than the width | variety of a pair of side panels 33 and 35 which also make a rectangle.

  Further, the blank sheet 31 has a pair of outer flaps 37 and 38 connected to the main panels 32 and 34 across the second ruled line L2 along the opening portions at both ends of the body portion, and the opening portions at both ends of the body portion. It has a pair of inner flaps 39 and 40 connected to the side panels 33 and 35 across the third ruled line L3.

  Of these, the outer flaps 37 and 38 are formed to have a width substantially matching the main panels 32 and 34, and the height at which the front ends of the outer flaps abut each other when bent at a substantially right angle toward the inside of the body portion. It is formed with. On the other hand, the inner flaps 39 and 40 are formed with a width substantially matching the side panels 33 and 35 and with a height matching the outer flaps 37 and 38.

  In this corrugated carton, after the pair of inner flaps 39, 40 are bent along the third ruled line L3, the pair of outer flaps 37, 38 are bent along the second ruled line L2, and the pair of inner flaps 39, 40 40, a pair of outer flaps 37 and 38 are folded. Then, by joining the pair of outer flaps 37, 38 to the pair of inner flaps 39, 40 with the adhesive S, it is possible to seal the opening portions at both ends of the body portion.

  The blank sheet 31 constitutes a wrap round type corrugated cardboard carton, and a separation band 41 is formed by perforations that divide the central portions of the inner flaps 39 and 40 and the side panels 33 and 35. Therefore, this corrugated carton can be opened by separating the separation band 41 along the perforation.

  By the way, in this corrugated carton, the recessed part 50 extended in the direction which cross | intersects the application direction of the adhesive agent S is provided in the junction part of a pair of outer flap 37,38. A plurality of the recesses 50 are provided side by side in the direction in which the adhesive S is applied.

  These recesses 50 are formed by pressing the surfaces of the outer flaps 37 and 38 that are joined to the inner flaps 39 and 40. A part of the adhesive S is applied so as to straddle the plurality of recesses 50, and a part of the adhesive S is applied on a surface where the recesses 50 are not formed.

  In the corrugated cardboard carton having the above-described configuration, the ends of the pair of outer flaps 37 and 38 are in abutment with each other at the time of sealing. Is peeled off from the inner flaps 39 and 40. Thereby, it can be set as an open state.

  At this time, since the concave portion 50 extending in the direction intersecting the application direction of the adhesive S described above is provided in the joint portion of the pair of outer flaps 37, 38, the joint strength is moderately reduced by the concave portion 50. The outer flaps 37, 38 can be easily peeled off from the inner flaps 39, 40.

  As described above, in the cardboard carton to which the present invention is applied, the outer flaps 37 and 38 can be easily peeled off from the inner flaps 39 and 40 at the time of opening, and a finger is applied to the end face of the outer flaps 37 and 38 at the time of opening. It is also possible to prevent cutting.

In addition, this invention is not necessarily limited to the thing of the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, the corrugated cardboard carton to which the present invention is applied has a configuration in which a plurality of the recesses 20 and 50 are arranged in the direction in which the adhesive S is applied. 50 may be provided.

  That is, in the present invention, the bonding strength of the outer flaps 7 and 8 (37 and 38) to the inner flaps 9 and 10 (39 and 40) can be arbitrarily adjusted by the number of the concave portions 20 and 50 arranged. is there. Moreover, in this invention, it is possible to adjust joining strength also by the length of the said recessed parts 20 and 50 extended in the direction which cross | intersects the application direction of the adhesive agent S. FIG.

  Further, in the corrugated cardboard carton to which the present invention is applied, the recesses 20 and 50 are formed by pressing the surfaces of the outer flaps 7 and 8 (37 and 38) to be joined to the inner flaps 9 and 10 (39 and 40). Can be easily formed. The recesses 20 and 50 can also be formed by embossing or ruled line processing.

FIG. 1 is a development view of a blank sheet constituting the corrugated cardboard carton according to the first embodiment. FIG. 2 is a perspective view showing a sealed state of the cardboard carton. FIG. 3 is a perspective view showing an opened state of the cardboard carton. FIG. 4 is a development view of a blank sheet constituting the corrugated cardboard carton of the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Blank sheet 2, 4 ... Main panel (side plate) 3, 5 ... Side panel (side plate) 6 ... Paste margin 7, 8 ... Outer flap 9, 10 ... Inner flap 20 ... Recessed part
31 ... Blank sheet 32, 34 ... Main panel (one opposing side plate) 33, 35 ... Side panel (other opposing side plate) 36 ... Adhesive margin 37, 38 ... Outer flap 39, 40 ... Inner flap 41 ... Detachment Band 50 ... concave

Claims (3)

It is equipped with a blank sheet cut into a cardboard paper with ruled lines,
The blank sheet is sequentially connected to four side plates sandwiching the first ruled line, the glue margin connected to one side plate across the first ruled line, and the four side plates and the glue margin to each first ruled line. When the side plate at the other end is attached to the glue margin to form a square cylindrical body, one opposing side plate across the second ruled line along the opening at both ends of the body A pair of outer flaps connected to each other, and a pair of inner flaps connected to other opposing side plates across the third ruled line along the opening portions at both ends of the body portion,
Folding the pair of inner flaps along each third ruled line, folding the pair of outer flaps along each second ruled line, folding the pair of outer flaps onto the pair of inner flaps, and bonding them with an adhesive, A corrugated cardboard carton in which the opening portions at both ends of the body portion are sealed,
A corrugated cardboard carton, wherein a concave portion extending in a direction intersecting with the direction of application of the adhesive is provided at a joint portion of the pair of outer flaps.   The corrugated carton according to claim 1, wherein a plurality of the concave portions are provided side by side in a direction in which the adhesive is applied.   The corrugated carton according to claim 1 or 2, wherein the concave portion is formed by pressing a surface of the outer flap that is joined to the inner flap.

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