JP2020007038A - Packaging box - Google Patents

Abstract

To provide a packaging box from which an adhesive tape can be peeled regardless of the presence or absence of a space between an end side surface and contents.SOLUTION: A packaging box has a square cylindrical trunk having a pair of first side plates and a pair of second side plates, a bottom plate that closes a lower open end of the trunk, an outer flap connected to an upper edge of the first side plate, and an inner flap connected to an upper edge of the second side plate. When an adhesive tape of a predetermined width cut to a predetermined length is attached from the outer flap to the second side plate by closing the upper open end of the trunk by the inner flap and the outer flap, a region where the adhesive tape is adhered to the second side plate is a part to be bonded. A curved or bended cut line connecting one end of a position having a predetermined distance from the part to be bonded on the fold line and the other end of the position having the predetermined distance from the one end in a direction opposite to the part to be bonded is formed in the inner flap connected via the fold line to the second side plate forming the part to be bonded.SELECTED DRAWING: Figure 3A

Description

  The present invention relates to a packaging box.

  Conventionally, in a so-called A-type corrugated cardboard box, both inner flaps are bent so as to be in a horizontal position toward the inside of the body portion, and the upper flaps are bent so that the tips of both outer flaps abut each other. By adhering an adhesive tape of a predetermined width cut to a predetermined length along both end edges of a pair of outer flaps, and adhering both ends of the adhesive tape to both side surfaces, The to-be-packaged product is packed by closing the upper open end of the body.

  In the above-mentioned packaging box, by using an adhesive tape having a high adhesive strength, a strong closed state can be maintained, but on the other hand, the adhesive tape is difficult to peel off when opening, and the opening operation cannot be performed smoothly. There is an inconvenience.

  On the other hand, there is known a packaging box in which a part of the end side surface including a region where an adhesive tape is stuck is broken, and the adhesive tape is peeled off (see Patent Document 1 below).

A pair of notches are provided on the end side of the packaging box with an adhesive tape to which a breakable line is stuck from the upper edge to the lower edge, and a pair of cuts approaching each other from the center of each of the breakable lines. Have been. As a result, in the packaging box, after breaking so as to connect both cuts, by breaking both breakable lines upward,
The cardboard piece can be separated from the end side face, and the adhesive tape can be peeled off integrally with the cardboard piece.

JP 2007-8529 A

  However, in the above-mentioned packaging box, when breaking so as to connect both cuts, it is necessary to push a finger from the cut into the inside of the box and make a clue to break the end side surface by hooking a finger. When there is no space between the end side and the contents, such as when copy paper is stored without a gap, there is a disadvantage that it is difficult to push a finger and it is difficult to make a clue to break the end side. .

  In view of the above, an object of the present invention is to provide a packaging box from which an adhesive tape can be peeled regardless of the presence or absence of a space between an end side surface and contents.

  In order to achieve this object, the packaging box of the present invention has a pair of first side plates facing each other and a pair of second side plates facing each other in a direction intersecting the facing direction of the pair of first side plates. A rectangular tubular body extending, a bottom plate closing a lower open end of the body, an outer flap connected to an upper edge of the first side plate via a fold line, and a second side plate. And an inner flap connected to the upper edge via a fold line, in order to close the upper open end of the body, so as to be in a horizontal position toward the inside of the body. On the upper surface of the bent inner flap, the outer flap is bent so as to overlap, and when an adhesive tape having a predetermined width cut to a predetermined length is attached from the outer flap to the second side plate, Make sure that the adhesive tape is stuck on the second side plate. Is an area to be bonded, and the inner flap connected via a fold line to the second side plate on which the area to be bonded is formed has a predetermined position on the fold line from the area to be bonded. A curved or bent cut line is formed connecting one end of the position at a distance of the distance and the other end of the position at a predetermined distance from the one end in the direction opposite to the intended bonding portion. It is characterized by the following.

  The packaging box of the present invention includes a square tubular body extending vertically and a bottom plate that closes the lower open end of the body, so that contents can be stored.

  Here, the body has a pair of first side plates facing each other and a pair of second side plates facing each other in a direction intersecting the first side plate in a direction facing the first side plates, and the first side plate is provided with the first side plates. An outer flap connected to the upper edge of the second side plate via a fold line, and the second side plate includes an inner flap connected to the upper edge of the second side plate via a fold line. The outer flap is folded along the fold line so that the outer flap is overlapped on the upper surface of the inner flap bent so as to be in a horizontal posture toward the inside, and has a predetermined length from the outer flap to the second side plate. The upper open end of the trunk can be closed by attaching the cut adhesive tape having a predetermined width.

  By the way, in the present invention, a region of the second side plate where the adhesive tape is to be adhered is a bonding scheduled portion, and the second side plate on which the bonding scheduled portion is formed is formed through a fold line. Since the connected inner flap has a curve or a bent line connecting one end and the other end on the fold line, the inner flap is horizontally moved inward of the body as described above. When the inner flap is bent so as to be in the posture, a region surrounded by the fold line and the cut line of the inner flap is extended upward along the second side plate, and stands up from the inner flap.

  The enclosed area is a position where one end of a score line constituting the area is located at a predetermined distance from the portion to be bonded on the fold line, and the other end is a portion where the other end is to be bonded to the one end. Since it is provided at a position at a predetermined distance in the opposite direction to the part, it is entirely separated from the part to be bonded. Therefore, when the adhesive tape is attached to the second side plate, the adhesive tape does not overlap with the enclosed area, so that the enclosed area rising from the inner flap can be gripped with a finger. .

  When the second side plate is pulled down to the portion to be bonded by pulling down while holding the enclosed area with a finger, the adhesive tape stuck to the outer surface of the portion to be bonded is broken. A part thereof is turned up with the second side plate. By pulling the turned-up portion of the adhesive tape, the adhesive tape can be peeled from the packaging box.

  Therefore, according to the packaging box of the present invention, the adhesive tape can be peeled regardless of the presence or absence of the space between the second side plate and the contents.

  Further, in the packaging box of the present invention, it is preferable that a breakable line extending in a direction from the other end to the bonding target portion is formed on the second side plate on which the bonding target portion is formed.

  According to this, since the breakable line extends from the other end of the cut line constituting the enclosed region, when the enclosed region is gripped and pulled, the second side plate is moved to the breakable line. It is broken along. At this time, since the breakable line extends in the direction of the expected bonding portion, the second side plate is broken toward the expected bonding portion when the enclosed region is pulled, so that the second side plate is reliably broken. It is easy to break to the part to be bonded.

  Further, in the packaging box of the present invention, it is preferable that the breakable line reaches the portion to be bonded.

  According to this, when the enclosed region is gripped with a finger and pulled to break the second side plate along the breakable line, the second side plate can be surely broken to the portion to be bonded. Therefore, the adhesive tape can be peeled from the packaging box.

  Further, in the packaging box of the present invention, the inner flap connected to the second side plate on which the expected adhesive portion is formed has a second breakable line extending from the one end on the fold line in the direction of the expected adhesive portion. Is preferably formed.

  According to this, when the enclosed area is gripped and pulled by a finger, the upper edge of the second side plate is broken along the second breakable line, so that the adhesive tape is attached to the second side plate. , Even if it is slightly intruded, a part of the adhesive tape is reliably turned up together with the broken upper edge of the second side plate, and the adhesive tape can be peeled from the packaging box. .

  Further, in the packaging box of the present invention, the score line is provided on both sides of the inner flap on the fold line sandwiching the portion to be bonded, and the second flap connected to the inner flap via the fold line is provided. The side plate has a curve or a bendable breakable line connecting the other ends of the two cut lines, and a second breakable line connecting the one end of the both cut lines at a predetermined distance from the breakable line. Preferably, it is formed.

  According to this, for example, when facing the second side plate, it can be broken from either the left or right side. Further, since the breakable line and the second breakable line are formed so as to straddle the adhesive tape in the width direction, when the line is broken from one of the enclosed regions to the other of the enclosed regions. Since the adhesive tape stuck to the portion to be bonded together with the corrugated cardboard pieces can be turned up, the adhesive tape can be more reliably peeled off from the packaging box.

FIG. 1 is a perspective view showing a first embodiment of the present invention. FIG. 4 is a development view of the packaging box in the first embodiment. Explanatory drawing which shows the opening operation | work in 1st Embodiment. Explanatory drawing which shows the opening operation | work in 1st Embodiment. Explanatory drawing which shows the opening operation | work in 1st Embodiment. The perspective view showing the packaging box of a 2nd embodiment of the present invention. FIG. 4 is an expanded view showing a packaging box according to a second embodiment of the present invention. The side view of the packaging box concerning the modification of the present invention. The side view of the packaging box concerning the modification of the present invention. The side view of the packaging box concerning the modification of the present invention.

[First Embodiment]
A first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the packaging box 1 of the first embodiment includes a square tubular body 20, a top plate 30 that closes an upper open end of the body 20, and a lower part of the body 20. It is formed in the shape of a rectangular parallelepiped by the bottom plate 40 closing the open end on the side.

  The body 20 is configured to include a pair of first side plates 21 that face each other in an upright state, and a pair of second side plates 22 that face each other in an upright state in a direction orthogonal to the direction in which the first side plates 21 face each other. I have.

  The top plate 30 includes a pair of outer flaps 31 and a pair of inner flaps 32 (see FIG. 2). Each outer flap 31 is connected to the upper edge of the first side plate 21 via a fold line c. Each inner flap 32 is connected to the upper edge of the second side plate 22 via a fold line d.

  The upper open end of the trunk 20 is closed by folding the pair of outer flaps 31 on top of the pair of inner flaps 32 bent so as to be in a horizontal position toward the inside of the trunk 20. Have been. The bottom plate 40 is also closed by an outer flap 41 and an inner flap 42, which will be described later.

  At this time, the portion where the leading edges of the pair of outer flaps 31 abut against each other is the abutting portion 31a, and the adhesive tape T is applied over the entire length of the abutting portion 31a, so that the packaging box 1 is sealed. Is done.

  Each end of the adhesive tape T in the longitudinal direction is also attached to each second side plate 22. In the present invention, a region of the second side plate 22 where the adhesive tape T is expected to be adhered is referred to as a scheduled adhesive portion 22a.

  In the center of the upper end portion of the second side plate 22, a breakable portion 50 (a region surrounded by a score line, a breakable line, and a second breakable line in the present invention) is provided. The breakable portion 50 has a substantially U-shape, and an adhesive tape T is attached so as to cross the center of the bottom. The region where the adhesive tape T intersects in the breakable portion 50 also constitutes a part of the planned adhesive portion 22a.

  The knobs 51 (regions defined by the score line and the fold line in the present invention), which correspond to both upper ends of the approximately U-shaped scheduled fracture portion 50, extend upward from the upper edge of the second side plate 22. It is provided.

  As shown in FIG. 2, the packaging box 1 is formed from one sheet of corrugated paperboard 10A. In the corrugated paperboard 10A, a pair of first side plates 21 and a pair of second side plates 22 are alternately arranged in a lateral direction alternately via a fold line a. An adhesive piece 23 is continuously provided on a side edge of the left first side plate 21 in FIG. 2 via a fold line b.

  The outer flap 31 is connected to the upper edge of each first side plate 21 via a fold line c.

  The inner flap 32 is connected to the upper edge of each second side plate 22 via a fold line d. The area where the adhesive tape T in the center of the upper edge of each of the second side plates 22 is expected to be adhered is the scheduled adhesive portion 22a.

  Similarly, the outer flap 41 is connected to the lower edge of each first side plate via a fold line c. The inner flap 32 is connected to the lower edge of each second side plate 22 via a fold line d.

  In the pair of inner flaps 32, a pair of score lines 52 are formed on both sides of the scheduled bonding portion 22a at the base end.

  The cut line 52 is formed between the inner end 52a (one end in the present invention) at a position on the lower edge (fold line d) at a predetermined distance from the intended bonding portion 22a, and the inner end 52a. The outer end 52b (the other end in the present invention) of a position at a predetermined distance in the direction opposite to the bonding expected portion is connected and extends in a U-shape.

  Further, the pair of second side plates 22 are formed with a substantially U-shaped first breakable line 53 (breakable line in the present invention) connecting the outer ends 52b of the both cut lines 52. The pair of second side plates 22 are formed with straight second breakable lines 54 connecting the inner ends 52 a of both the cut lines 52. In the present embodiment, the first breakable line 53 and the second breakable line 54 are formed as so-called perforations in which a plurality of linear cuts are intermittent.

  The outer flap 31 is formed with a notch 31b on the tip side of both side edges.

  Next, a process of assembling the packaging box 1 from the corrugated paperboard 10A will be described.

  First, the pair of first side plates 21 and the pair of second side plates 22 are bent in the same direction along the fold line a, and the adhesive pieces 23 are bent along the fold line b to form inner surfaces of the ends of the first side plates 21. The body 20 shown in FIG. 1 is formed by polymerizing and bonding.

  Next, the pair of inner flaps 42 are bent along the fold line d toward the inside of the body 20 so as to be in a horizontal posture, and the pair of outer flaps 41 are bent along the fold line c to form the inner flap 42. The bottom plate part 40 is formed by overlapping on the upper surface.

  At this time, although not shown in FIG. 1, a portion where the distal ends of the pair of outer flaps 41 abut against each other is the abutting portion 41a, and the adhesive tape T is applied over the entire length of the abutting portion 41a. Thus, the contents can be stored in the body 20.

  Next, the pair of inner flaps 32 are bent along the fold line d so as to be in a horizontal posture toward the inside of the body 20. At this time, since the inner flap 32 is provided with the score line 52 whose both ends are on the score line d, when the inner flap 32 is bent so as to be in the horizontal posture, the score line 52 and the score line d The region surrounded by is, together with the other regions of the inner flap 32, standing up with respect to the inner flap 32 while extending upward along the second side plate 22 without being bent in a horizontal posture. The region surrounded by the upright cut line 52 and the fold line d is the knob 51 shown in FIG.

  Next, the top plate portion 30 is formed by bending the pair of outer flaps 31 along the fold line c and overlapping the upper surface of the inner flap 32.

  Next, the packaging box 1 is sealed by adhering the adhesive tape T over the entire length of the abutting portion 31a of the outer flap 31.

  Next, the opening operation of the sealed packaging box 1 will be described.

  First, as shown in FIG. 3A, one of the right and left knobs 51 is picked with a finger (in FIG. 3A, a case where the right side is pinched will be described as an example).

  Next, as shown in FIG. 3B, the knob 51 is slightly pulled to the lower left, and then is pulled to the left as it is. Thereby, the second side plate 22 is gradually broken along the first breakable line 53 and the second breakable line 54.

  Next, as shown in FIG. 3C, the cardboard piece 55 is separated from the second side plate 22 by pulling the knob 51 upward. At this time, since the adhesive tape T is adhered to the corrugated cardboard pieces 55 crosswise, the longitudinal end of the adhesive tape T is also peeled off from the second side plate 22.

  Then, by pulling the corrugated cardboard piece 55 to which the adhesive tape T is attached, the adhesive tape T is peeled from the packaging box 1 over its entire length.

  According to the packaging box 1 of the first embodiment described above, the adhesive tape T can be easily peeled off. In particular, since it is not necessary to push a finger into the second side plate 22 to break it, even when copy paper, a paper box, or the like is contained as a content in the packaging box 1 without any gap, the adhesive tape T is easily used. Can be peeled off.

  Further, since the knob 51 of the first embodiment extends upward from the upper edge of the second side plate 22, the knob 51 is pinched with a finger to break the second side plate 22 and break the adhesive tape T. From the packaging box 1 can be obtained.

  Further, since the first breakable line 53 of the first embodiment is formed from the outer end 52b to the portion 22a to be bonded, the grip portion 51 is grasped with a finger and pulled downward to bond the second side plate 22. The adhesive tape T stuck on the surface of the scheduled adhesive portion 22a can be peeled off from the packaging box 1 by breaking up to the scheduled portion 22a.

  Further, since the breakable portion 50 of the first embodiment has the second breakable line 54 on the fold line d, the adhesive tape T is slightly applied to the second side plate 22 (adhesive tape). Even when T exceeds the second breakable line 54 but does not exceed the first breakable line 53), the adhesive tape T stuck on the surface of the expected adhesive portion 22a is attached to the packaging box 1. Can be peeled off.

  Further, the first breakable line 53 and the second breakable line 54 of the first embodiment respectively connect both outer ends 52b and both inner ends 52a of the both cut lines 52, and straddle the adhesive tape T in the width direction. Since it is formed, the cardboard piece 55 can be separated from the packaging box 1 when the knob 51 is broken from one side to the other. Then, by pulling the corrugated cardboard piece 55 to which one end of the adhesive tape T is adhered, the adhesive tape T can be peeled from the packaging box 1, so that the hands become dirty without touching the adhesive surface of the adhesive tape T. Absent.

  Moreover, since the to-be-fractured part 50 of 1st Embodiment is substantially U-shaped, and both the knob parts 51 each have extended upward from the upper edge of the 2nd side plate 22, each of the right hand and the left hand is each. The second side plate 22 can be broken by pinching the knob 51 with a finger.

  In addition, since the notch 31b is formed in the outer flap 31 of the first embodiment, when the outer flap 31 is bent and overlapped on the upper surface of the inner flap 32, the side edge of the outer flap 31 has the knob 51. Because it is difficult to contact the knob 51, it is possible to prevent the knob 51 from being erroneously bent even when it is mechanically packed.

[Second embodiment]
A second embodiment of the present invention will be described with reference to FIGS. 4A and 4B. In the second and subsequent embodiments, the description of the same configuration as the first embodiment will be omitted.

  As shown in FIG. 4A, the packaging box 2 of the second embodiment is a so-called B-type cardboard box, and the top plate 230 is formed from a pair of inner flaps 232 and one outer flap 231. An adhesive tape T is applied along the leading edge of the outer flap and the upper edge of the first side plate 221 adjacent to the leading edge.

  The scheduled bonding portion 222a of the second embodiment is formed at the upper corner of the second side plate 222 (upper right in FIG. 4A).

  The breakable portion 250 according to the second embodiment is substantially L-shaped, and has an adhesive tape T attached so as to intersect a portion extending in the horizontal direction. The region of the knob 251 where the adhesive tape T intersects also constitutes a part of the scheduled adhesive portion 222a.

  As shown in FIG. 4B, the packaging box 2 is formed from one piece of corrugated paperboard 10B.

  An outer flap 231 having a length approximately twice as long as the outer flap in the first embodiment is connected to an upper edge of the left first side plate 221 via a fold line c. On the other hand, the outer flap is not connected to the upper edge of the first side plate 221 sandwiched between the second side plates 222.

  In the second embodiment, the upper left corner of the second side plate 222 on the right side is a portion to be bonded 222 a, which is a region where the adhesive tape T is expected to be stuck, and the second side sandwiched by the first side plate 221. Similarly, the upper right corner of the side plate 222 is a portion to be bonded 222a.

  A cut line 252 is provided on each of the pair of inner flaps 232 adjacent to the portion 222a to be bonded.

  The cut line 252 is located on the lower edge (fold line d) of the inner flap 232 at a predetermined distance from the intended bonding portion 222a, and is opposite to the expected bonding portion with respect to the inner end 252a. It extends in a U-shape by connecting the outer end 252b of the position at a predetermined distance in the direction.

  Further, the pair of second side plates 222 have a substantially L-shaped first breakable line 253 extending from the outer end 252b toward the portion to be bonded 222a, and the fold line d from the inner end 252a to the portion to be bonded 222a. A straight second rupturable line 254 extending toward the center is formed. The first breakable line 253 and the second breakable line 254 extend to the side edge (fold line a) of the adjacent inner flap 232.

  Next, the opening operation of the sealed packaging box 2 will be described. Here, a case where the second side plate 222 shown in FIG.

  First, the knob 251 is pinched by a finger and pulled slightly downward, and then pulled rightward to the side edge (fold line a) of the adjacent first side plate 221. Accordingly, the second side plate 222 is broken along the first breakable line 253 and the second breakable line 254 of the breakable portion 250.

  At this time, since the adhesive tape T is affixed so as to cross the breakable portion 250, the breakable portion 250 is broken off from the packaging box 2 and turned up, so that the end of the adhesive tape T is turned up together.

  Then, the entire adhesive tape T can be peeled from the packaging box 2 by gripping and pulling the end of the adhesive tape T that has been turned up.

  According to the packaging box 2 of the second embodiment described above, the adhesive tape T can be easily peeled off even in a so-called B-type packaging box.

  In the second embodiment, an example has been described in which the breakable portion 250 is broken up to the side edge (the fold line a) of the adjacent first side plate 221 and the end of the turned-up adhesive tape T is gripped. The present embodiment is not limited to this, and the to-be-broken portion 250 can be separated from the second side plate 222 as a corrugated cardboard piece 255 by pulling the to-be-broken portion 250 that has been broken to the fold line a upward and tearing it.

  Other modified examples will be described with reference to FIGS.

  In the first embodiment, the knobs 51 are provided on both sides of the portion to be bonded 22a. However, as shown in FIGS. 5A to 5C, only one knob 51 may be provided on one side.

  Further, in the first embodiment and the second embodiment, the knobs 51 and 251 are shown as having a substantially square shape. However, the present invention is not limited to this. Triangular shapes as shown in FIG. 5A and semicircular shapes as shown in FIG. Alternatively, it may be a parallelogram as shown in FIG. 5C, or may be a trapezoid, a pentagon, a hexagon, an octagon, etc., and an ellipse.

  In the first embodiment and the second embodiment, the knobs 51 and 251 are provided adjacent to the portions 22a and 222a to be bonded. However, as shown in FIG. May be provided away from the camera.

  In the first and second embodiments, the first breakable lines 53 and 253 and the second breakable lines 54 and 254 are both formed. However, as shown in FIG. Only the feasible line 453 may be formed, or neither may be formed as shown in FIG. 5C, and although not shown, only the second breakable line may be formed.

  In the first embodiment and the second embodiment, the first breakable lines 53 and 253 and the second breakable lines 54 and 254 traverse the bonding portions 22a and 222a. 5B, it may reach the planned bonding portion 422a, may extend in the direction of the planned bonding portion 322a as shown in FIG. 5A, or may not be formed as shown in FIG. 5C. Good.

  Further, in the first embodiment and the second embodiment, the first breakable lines 53 and 253 have a curved shape, but may have a linear shape as shown in FIG. 5A.

  In the first embodiment and the second embodiment, the second breakable lines 54, 254 extend from the inner ends 52a, 252a on the fold line d toward the portions 22a, 222a to be bonded. As shown in FIG. 5A, as long as it extends from the inner end 352 a toward the portion 322 a to be bonded, it does not have to extend on the fold line d.

  Further, in the first embodiment and the second embodiment, the second breakable lines 54 and 254 are shown as being linear, but are not limited thereto, and may be curved or bent.

  In the first embodiment and the second embodiment, the first breakable lines 53 and 253 and the second breakable lines 54 and 254 extend while maintaining an equal interval. As such, the interval may be gradually increased. This is because it is possible to prevent the second side plate from being erroneously broken before reaching the scheduled bonding portion 322a when the second side plate is broken toward the planned bonding portion 322a. Although not shown, if the first breakable line and the second breakable line do not intersect, the interval may be gradually narrowed.

  In the first embodiment and the second embodiment, the first breakable lines 53 and 253 and the second breakable lines 54 and 254 are formed as so-called perforations in which a plurality of linear cuts are intermittent. However, the present invention is not limited to this. For example, although not shown, a zipper or the like having a plurality of cuts having one end bent may be used.

  In the first embodiment, the portion to be broken 50 is provided at the upper end of the second side plate 22, but may be provided at the lower end of the second side plate 22.

  Further, in the first embodiment and the second embodiment, the case where the to-be-ruptured portion 50 is provided on the pair of second side plates 22 and 222 has been described, but any one of the second side plates 22 and 222 may be provided. Only one may be provided.

  In the first embodiment and the second embodiment, the quadrangular cylindrical body portions 20 and 220 are shown. However, the present invention is not limited to this. It may be cylindrical, hexagonal, heptagonal, octagonal, or the like.

  In the second embodiment, the top plate 230 is formed from a pair of inner flaps 232 and one outer flap 231. However, the top plate 230 is formed from one inner flap 232 and one outer flap 231. It may be.

  In 1st Embodiment, when closing the upper open end of the trunk | drum 20, the thing which abuts the front-end | tip of a pair of outer flap 31 and formed the abutment part 31a was shown, but it is not restricted to this. Although not shown, the distal ends of the pair of outer flaps 31 overlap because the length of the outer flaps 31 is longer than that of the first embodiment, or the distal ends are different because the lengths of the pair of side edges of the outer flaps are different. The abutting portion 31a may not be formed, for example, the outer flap has a special shape, such as an oblique edge.

  In the first embodiment, the notch 31b is formed in the pair of outer flaps 31. However, the notch 31b may not be formed.

  In the first embodiment and the second embodiment, the bottom plate portions 40 and 240 bend the pair of inner flaps 42 and 242 in a horizontal posture toward the inside of the body portion 20 along the fold line d. Although the pair of outer flaps 41 and 241 are formed by folding along the fold line c to be overlapped on the upper surfaces of the inner flaps 42 and 242, the present invention is not limited to this. A so-called B type or the like formed by laminating one outer flap 41, 241 on the bent upper surface may be used.

  In the first embodiment, a so-called A-type cardboard box is shown, but a so-called wrap-around case may be used. In this case, the trunk 20 extends right and left.

  In the first and second embodiments, the adhesive tape T employs an OPP tape (stretched polypropylene tape). However, the present invention is not limited to this, and a kraft tape, a cloth tape, or the like may be employed.

1, 2, packaging boxes 20, 220, trunks 21, 221, first side plates 22, 222, 322, 422, 522, second side plates 22a, 222a, 322a, 422a, 522a, adhesive portions 31, 231 outside ... flaps 32, 232 ... inner flaps 40, 240 ... bottom plate parts 50, 250, 350, 450 ... scheduled break parts 51, 251, 351, 451, 551 ... knobs 52, 252, 352, 452, 552 ... cut line 52a, 252a, 352a, 452a, 552a ... inner ends 52b, 252b, 352b, 452b, 552b ... outer ends 53, 253, 353, 453 ... first breakable lines 54, 254, 354 ... second breakable lines a, b, c, d: fold line T: adhesive tape

Claims (5)

A vertically extending rectangular tubular body having a pair of first side plates facing each other and a pair of second side plates facing each other in a direction intersecting the facing direction of the pair of first side plates;
A bottom plate that closes the lower open end of the body,
An outer flap connected to an upper edge of the first side plate via a fold line;
An inner flap connected to an upper edge of the second side plate via a fold line,
In order to close the upper open end of the body, the outer flap is folded so as to be superimposed on the upper surface of the inner flap which is bent so as to be in a horizontal posture toward the inside of the body, and When the adhesive tape of a predetermined width cut to the length is applied from the outer flap to the second side plate, an area of the second side plate where the adhesive tape is to be applied is to be bonded. Department,
The inner flap connected to the second side plate on which the expected bonding portion is formed via a fold line has one end at a position at a predetermined distance from the expected adhesion portion on the fold line, and A packaging box, wherein a curved or bent line cut line is formed to connect the other end of a position at a predetermined distance in a direction opposite to the intended bonding portion. The packaging box according to claim 1,
A packaging box, wherein a breakable line extending from the other end in the direction of the bonding portion is formed on the second side plate on which the bonding portion is formed. The packaging box according to claim 2,
The packaging box, wherein the breakable line has reached the portion to be bonded. The packaging box according to any one of claims 1 to 3,
A packaging box, wherein a second rupturable line extending from one end of the score line to a portion to be bonded on the fold line is formed on the inner flap where the score line is formed. The packaging box according to any one of claims 1 to 4,
The score line is provided on both sides of the fold line sandwiching the portion to be bonded of the inner flap,
The second side plate connected to the inner flap via the fold line has a breakable line in the form of a curve or a bent line connecting the other ends of the two cut lines, and a predetermined distance from the rupturable line. And a second breakable line connecting one end of each of the two cut lines.