JP3214314U - Cardboard box - Google Patents

Abstract

The present invention provides a cardboard box in which an adhesive tape to be sealed can be easily peeled off. The corrugated paper is assembled from corrugated paper and includes a bottom wall, a four-side wall, and an upper surface flap. The corrugated paper is disposed on the four-side wall so that the width direction thereof is the vertical direction. A corrugated cardboard box 1 to which an adhesive tape 9 for sealing is applied from the butted portion of the flap 3a to the left side wall and the upper portion of the right side wall 2d, below the butted portion of each upper surface flap 3a of the left side wall and the right side wall 2d, The end of the adhesive tape 9 is affixed, the lower side is a cut-off rectangular separation region 12 having a cut line, and the cut-off line of the cut region is provided adjacent to and below the cut region. An upper edge, a lower line that is provided as a score line below the upper edge, and whose both ends coincide with the both ends of the upper edge in the front-rear direction, and a push line 11c that includes a score line that connects the upper edge and the lower edge; An indentation area 11 having That. [Selection] Figure 1

Description

  The present invention relates to a cardboard box.

  An inexpensive and lightweight cardboard box is widely used as a container for storing various articles and for transporting and storing the stored articles.

  As an example of a corrugated cardboard box, a box having a rectangular parallelepiped shape is known. That is, the cardboard box includes a bottom wall, a four-side wall standing upright from the bottom wall, and a flap extending from each upper edge of a pair of opposite side walls of the four-side wall. It will be in the state where the upper edge matched.

  As a method for sealing such a corrugated cardboard box, a method of sticking an adhesive tape from a portion where the flap is abutted to an upper portion of a side wall located below the flap is widely performed.

  When the sealed cardboard box is opened and the stored article is taken out, it is necessary to remove the adhesive tape by hand or cut it with a blade.

  However, when the adhesive tape is peeled off by hand, the end of the adhesive tape that is in close contact with the side wall of the cardboard box is raised one by one with a nail or the like, and the end is picked and peeled off. Not only is it cumbersome, but work efficiency is poor.

  On the other hand, when using a blade, it is necessary to consider the surroundings when using the blade, and the contents are often damaged when the adhesive tape is cut. There is also a concern that the blade is not at hand in the first place. These problems and concerns are conspicuous, for example, in shelters when disasters occur. That is, many people gather in the evacuation center, and a large amount of cardboard boxes in which support supplies are stored must be opened.

  Therefore, as a corrugated cardboard box from which the adhesive tape can be easily peeled off, in Patent Document 1, an upper portion of the side wall located below the butted portion of the flap, a separation portion that can be separated from the side wall, and a lower portion of the separation portion. An indented portion is provided, and the indented portion includes an upper edge made of a common cut line with the lower edge of the separation portion, a push line made of a cut line extending downward from the center of the upper edge, and One having a lower edge made of a cut line extending horizontally from the lower end in the left and right sides has been proposed. In this cardboard box, the adhesive tape is stuck from the butted portion of the flap to the separating portion at the time of sealing.

  In Patent Document 1, in this corrugated cardboard box sealed with an adhesive tape, a gap is formed in the side wall by pushing on the indentation line of the indentation part with a finger, and the separation part is grasped from this gap and the outer edge of the side wall with the upper edge as an axis. It is said that the adhesive tape can be easily peeled from the cardboard box by bending in the direction and further pulling up the separation part together with the adhesive tape.

Utility Model Registration No. 3164053

  In the corrugated cardboard box disclosed in Patent Document 1, when the upper portion of the pushing portion is pushed in, the side wall is formed with a line connecting each end of the pushing portion upper edge and the lower edge located below each end portion as a fold. A part of is bent. At this time, since the lower edge of the pushing portion is shorter than the upper edge, the fold is inclined with respect to the vertical direction of the side wall.

  Here, the corrugated paper constituting the corrugated cardboard box is arranged so that the corrugated (corrugated) core step top extends in the vertical direction on the side wall, that is, the width direction of the corrugated paper is the vertical direction. It is common to arrange.

  For this reason, in the corrugated cardboard box disclosed in Patent Document 1, the crease and the core step cross each other, and when the push-in line is pushed in, the core step is bent at the crease, and a large force is required. In addition, since a repulsive force is generated at the fold, the formed gap is immediately closed when the hand is released, and the finger may be caught when the separating part is pulled up together with the adhesive tape.

  As described above, in the corrugated cardboard box disclosed in Patent Document 1, even if the pressure-sensitive adhesive tape to be sealed can be easily peeled off, a large force is required when the pushing portion is pushed in to form a gap on the side wall. There is room for improvement in openability.

  This invention is made | formed in view of such a problem, and it aims at providing the cardboard box which can peel easily the adhesive tape to seal including the pushing of a pushing part.

  As a result of various studies, the inventor has found that the above object can be achieved by the following device.

  A corrugated cardboard box according to one aspect of the present invention is assembled from corrugated cardboard having a corrugated core, a front liner laminated on the front side of the core, and a back liner laminated on the back side of the core. A bottom wall, a four-sided wall standing upright from the bottom wall, and extending from the respective upper edges of the front and rear side walls of the four-sided wall and bent inward to bring the upper edges into contact with each other. An upper surface flap, and the corrugated paper is disposed on the four-side wall such that the width direction of the corrugated paper is in the vertical direction. A corrugated cardboard box to which an adhesive tape for sealing is attached to the upper part of the right side wall of the four side walls, and each upper surface flap of at least one of the left side wall and the right side wall Below the butted portion, an end of the adhesive tape is affixed, and a horizontally extending lower side made up of a cut line is provided adjacent to the lower side of the cut region. An upper edge formed of the cut line in the separation region; a lower edge provided as a cut line below the upper edge; and both ends of the upper edge coincide with the both ends of the upper edge; and the upper edge; A pushing area having a pushing line formed by a cutting line connecting the lower edge.

  According to the present invention, the corrugated cardboard is arranged so that the width direction is the vertical direction on the four side walls, and the pushing area formed on the left and right side walls coincides with the both ends of the upper edge and the lower edge which are cut lines in the front-rear direction. To do. That is, one end of the lower edge is located immediately below one end of the upper edge, and the other end of the lower edge is located immediately below the other end of the upper edge. Therefore, when the pushing line is pushed in, the pushing area portions on the left and right side walls bend inward along lines connecting the both ends of the upper edge and the both ends of the lower edge. The crease formed at that time is parallel to the width direction of the cardboard paper. The width direction of corrugated cardboard refers to the direction in which the top of the corrugated core wave (hereinafter also referred to as “step”) extends, that is, the direction parallel to the step.

  From the above, in the corrugated cardboard box according to the present invention, since the fold is parallel to the width direction of the corrugated paper, there is no need to bend the core step at the crease when pushing the push-in line, and the crease is the width of the corrugated paper. Compared with the case of inclining with respect to the direction, the pushing line can be pushed with a very light force, and a gap can be easily formed on the left and right side walls in the pushing area.

  If a finger is inserted through this gap, the left and right side walls can be easily grasped in the separation region. The adhesive tape for sealing, which is attached so that the end is located inside the separation area, is pulled up together by pulling up the separation area of the left and right side walls. It can be easily removed without waking up.

  Further, according to the present invention, since the crease formed when the push-in line is pushed in as described above is parallel to the width direction of the corrugated cardboard, even if a repulsive force is generated at the fold, it is very small. Therefore, even if the hand is released after a gap is formed in the left and right side walls in the push-in area, the gap is not easily closed, and the possibility that a finger is caught when the separated area part of the left and right side walls is pulled up together with the adhesive tape is reduced.

  The cardboard box may be provided with the separation region and the pushing region on both the left side wall and the right side wall.

  If comprised in this way, an adhesive tape can be easily peeled off from the left or right side wall, without changing the direction of a cardboard box. Furthermore, if the separation region portion on both side walls is separated after opening, the cardboard box can be easily and stably lifted with both hands using the opening formed thereby.

  The cardboard box is a lead ruled pattern in which the separation area is a cut line on the left side and the right side, and an upper side includes a plurality of cut parts and a ruled part provided between the cut parts. Also good.

  Here, the “studded rule” refers to a ruled line formed by pushing in a streak shape so that there is no break in the cardboard paper. In addition, the “lead ruled line” refers to a ruled line in which a ruled part made of the ruled line and a cut part that penetrates the corrugated paper from the front liner to the back liner are alternately provided. A “ruled line” is a crease or a combination of a crease and a notch that is provided at a crease so that the cardboard paper bends at a predetermined place. is there. The lead ruler is a ruled line that has a higher degree of certainty that the corrugated paper is bent at the position of the ruled line than the stamped line, and is bent with a small force.

  According to this structure, the left side wall or the right side wall is separated from the pushing area, and the left side and the right side are separated from the remaining part of the left side wall or the right side wall (hereinafter also referred to as “main body”). Since only the upper side, which is the lead rule, is cut off and connected to the main body, if you insert your finger through the gap formed in the push area and pull the release area outward, the upper side is the axis with very light force Be raised.

  Furthermore, since the upper side of the separation region is a lead rule, the separation region portion of the left and right side walls can be separated from the left and right side walls with a lighter force than when the upper side is a simple ruled rule or when no ruled rule is provided. Can be separated from the body.

  Therefore, not only when forming a gap in the pushing area of the left and right side walls, but also after the gap is formed, the series of operations from separating the left and right side wall separating area from the main body and peeling the adhesive tape from the cardboard box is also light. Can be done with force.

  As for the said cardboard box, the said cutting | disconnection area | region may be the said notch part at the both ends of the said upper side.

  In this way, when the width of the adhesive tape is narrower than the length of the upper side of the separation area, the area where the front liner is peeled off when the adhesive tape is peeled off by pulling up the separation area, and at least one end of the upper side is ruled. It can be made narrower than when it is a part. Specifically, when the width of the adhesive tape is narrower than the length of the upper side of the separation area, if at least one end of the upper side is a ruled part, the adhesive tape on the upper side edge is affixed when the separation area is pulled up. The front liner will be peeled off to the upper side of the ruled part which is not formed. In addition, the direction in which the front liner is peeled is not determined, and the front liner is peeled off with a width equal to or wider than the upper side. However, if both ends of the upper side are cut portions, the cut portions act as notches, and the direction in which the front liner is peeled is guided in the direction toward the center side of the upper side. The front liner does not peel off above the notch. Therefore, the separation region can be separated from the left side wall or the right side wall together with the adhesive tape with a lighter force.

  ADVANTAGE OF THE INVENTION According to this invention, the cardboard box which can peel easily the adhesive tape to seal including the pushing of a pushing area | region can be provided.

FIG. 1 is a schematic perspective view of a cardboard box according to an embodiment of the present invention. FIG. 2 is a development view of a cardboard box according to an embodiment of the present invention. FIG. 3 is a partial perspective view of a cardboard box according to an embodiment of the present invention. FIG. 4 is a partially enlarged view of the vicinity of the pushing area and the separation area of the cardboard box according to the embodiment of the present invention. FIG. 5 is a schematic diagram illustrating a state in which a gap is formed in the indentation region. FIG. 6 is a schematic diagram showing a state where the separation region is pulled up and the adhesive tape is peeled off.

  Hereinafter, embodiments for carrying out a cardboard box according to the present invention will be described with reference to the accompanying drawings. In addition, the dimension of the structural member in each figure does not represent the dimension of an actual structural member, the dimension ratio of each structural member, etc. faithfully.

<Structure of cardboard box>
(Overall configuration)
FIG. 1 is a schematic perspective view of a cardboard box according to an embodiment of the present invention, and FIG. 2 is a development view of the cardboard box. In FIG. 1, the front-rear direction of the cardboard box is shown as an arrow A direction, the left-right direction of the cardboard box is shown as an arrow B direction, and the vertical direction of the cardboard box is shown as an arrow C direction.

  As shown in FIG. 1, the cardboard box 1 has a rectangular parallelepiped shape in a sealed state, and includes a quadrangular side wall 2 having a rectangular tube shape, and an upper wall 3 and a bottom wall (not shown) at the upper end and the lower end, respectively. The four-side wall 2 is erected from the bottom wall.

  As shown in FIG. 2, the cardboard box 1 includes a front side wall 2a, a rear side wall 2b, a left side wall 2c and a right side wall 2d, and an upper outer flap 3a (upper surface) extending from each upper edge of the front side wall 2a and the rear side wall 2b. Flap), an upper surface inner flap 3b extending from each upper edge of the left side wall 2c and the right side wall 2d, a lower surface outer flap 5a extending from each lower edge of the front side wall 2a and the rear side wall 2b, the left side wall 2c and A lower surface inner flap 5b extending from each lower edge of the right side wall 2d and a trapezoidal joint margin 7 extending from the left edge of the front side wall 2a are provided. The front side wall 2a, the rear side wall 2b, the left side wall 2c, and the right side wall 2d constitute a four-side wall 2. Each upper surface outer flap 3a and each upper surface inner flap 3b constitute an upper wall 3, and each lower surface outer flap 5a and each lower surface inner flap 5b constitute a bottom wall.

  The corrugated cardboard box 1 is formed using a single corrugated paper having a uniform thickness, and is formed in a rectangular parallelepiped shape in a sealed state. The dimensions of the cardboard box 1 are not particularly limited, and are set in consideration of the size of the contents to be stored.

  FIG. 3 is a partial perspective view of the cardboard box. The corrugated paper constituting the cardboard box 1 includes a corrugated (step-shaped) core 1a, a front liner 1b stacked on the front side of the core 1a, and a back liner 1c stacked on the back side of the core 1a. Have In the corrugated paper, the direction in which the top (step top) of the core 1a extends is generally referred to as the “width direction”, and the direction orthogonal to the width direction is referred to as the “traveling direction”. Is shown. The cardboard box 1 according to the present embodiment is punched from the corrugated base paper into the unfolded state shown in FIG. 2 so that the width direction of the corrugated paper is the vertical direction of the four-side wall 2 in order to secure the strength in the vertical direction.

  The thin line attached to the boundary between the side walls of the cardboard box 1 shown in FIG. 2, the boundary between each side wall and the flap in contact with the side wall, or the boundary between the front side wall 2a and the seam 7 indicates a crease. These creases are preferably provided with ruled lines for easy folding when the cardboard box 1 is assembled, and the ruled lines are preferably stamped lines.

  Here, the “ruled line” means a crease provided in a crease part or a combination of a crease and a cut so that the corrugated paper is bent at a predetermined place. Is a kind of ruled line. “Rules” refers to ruled lines that are pushed in a streak shape so that the cardboard paper is not cut.

  The ruled line may be provided at the same time as the cardboard box 1 is punched from the cardboard base paper, or may be provided after punching. However, if the ruled lines are provided simultaneously with the punching, the time required for the punching process and the process of forming the ruled lines can be shortened, and the unfolded cardboard box 1 can be efficiently manufactured.

  In the cardboard box 1, the front side wall 2a and the rear side wall 2b are congruent squares, and the left side wall 2c and the right side wall 2d are also congruent squares. These four side walls have the same vertical height.

  Each upper surface outer flap 3a and each lower surface outer flap 5a have a congruent square shape, and the length in the direction extending from each upper edge or each lower edge of the front side wall 2a or the rear side wall 2b is the length of the left side wall 2c or the right side wall 2d. Half the length of the upper edge. Therefore, when the upper outer flap 3a and the lower outer flap 5a are folded inward and closed, the upper edges of each other are brought into contact with each other. Further, the abutting portion of each upper outer flap 3a connects the center of the upper edge of the left side wall 2c and the center of the upper edge of the right side wall 2d in a straight line. Similarly, the abutting portion of each lower surface outer flap 5a also connects the center of the lower edge of the left side wall 2c and the center of the lower edge of the right side wall 2d in a straight line.

  Each of the upper surface inner flap 3b and each lower surface inner flap 5b is also a congruent square, and the length in the direction extending from each upper edge or each lower edge of the left side wall 2c or the right side wall 2d is the left side wall 2c or the right side wall. It is half the length of the upper edge of 2d.

  When assembling the cardboard box 1, the joint 7 is fixed to the inner surface of the left side wall 2c with an adhesive or a stapler so that the left edge of the front side wall 2a and the right edge of the left side wall 2c coincide. By fixing the joint margin 7 to the inner surface of the left side wall 2c, the four-side wall 2 of the cardboard box 1 is formed. At this time, the front liner 1b is disposed outside the cardboard box 1, and the back liner 1c is disposed inside.

  After forming the four-side wall 2, the lower inner flap 5b is bent 90 ° inward, and the lower outer flap 5a is bent 90 ° inward. The folded outer bottom flaps 5a are in a state in which the upper edges are abutted to each other, and constitute a bottom wall (not shown) surrounded by the four-side wall 2. The bottom wall of the cardboard box 1 is fixed by sticking the adhesive tape 8 from the abutting portion of each lower surface outer flap 5a to the lower part of the left side wall 2c and the right side wall 2d. The bottom wall may be fixed by fixing the lower inner flap 5b and the lower outer flap 5a to each other with an adhesive or a stapler.

  In the corrugated cardboard box 1 formed with the four-side wall 2 and the bottom wall, the upper inner flap 3b is bent inward by 90 °, and the upper outer flap 3a is bent inward by 90 °. Each folded outer upper surface flap 3a is in a state in which the upper edge is abutted. The cardboard box 1 is sealed by applying the adhesive tape 9 from the abutting portion of each upper outer flap 3a to the upper part of the left side wall 2c and the right side wall 2d.

(Separation area and indentation area)
As shown in FIG. 1 and FIG. 2, the corrugated cardboard box 1 is separated from the upper part of the left and right side walls 2c and 2d in the center in the front-rear direction, that is, below the butted portion of each upper surface outer flap 3a. An indentation region 11 is provided adjacently.

  The cut-off area 12 and the push-in area 11 are formed by cut lines or lead rules provided on the corrugated paper constituting the corrugated cardboard box 1 as will be described later, and both constitute part of the left side wall 2c and the right side wall 2d. To do. Hereinafter, portions of the left side wall 2c or the right side wall 2d other than the separation region 12 and the pushing region 11 are also referred to as “main bodies” of the side walls. That is, the left side wall 2c and the right side wall 2d are each composed of a separation region 12 portion, a pushing region 11 portion, and a main body.

  The cut lines or lead rules that form the separation region 12 and the push region 11 may be provided at the same time as the cardboard box 1 is punched from the cardboard base paper, or may be provided before and after punching. However, if these cut lines and lead rules are provided at the same time as punching, the time required for the punching process and the process of forming the cut lines and lead rules can be shortened, and the expanded corrugated cardboard box 1 can be efficiently used. Can be manufactured well.

  FIG. 4 is a partially enlarged view of the vicinity of the push-in area and the separation area of the cardboard box. The separation region 12 has a square shape, and the upper side 12a and the lower side 12b, the left side 12c, and the right side 12d are parallel to each other. The upper side 12a and the lower side 12b extend in the front-rear direction (forward / reverse direction of the arrow A direction), and the left side 12c and the right side 12d extend in the vertical direction (forward / reverse direction of the arrow C direction). The lower side 12b, the left side 12c, and the right side 12d are cut lines that penetrate the corrugated paper constituting the cardboard box 1 from the front liner 1b to the back liner 1c, and the upper side 12a is a lead rule.

  Here, the “lead ruled line” refers to a ruled line in which a ruled part in which cardboard paper is pushed in a streak shape and a cut part that passes through the cardboard paper are alternately provided. The lead crease has a higher degree of certainty that it can be folded at the position of the crease line when the corrugated paper is folded, and can be bent with a small force. As shown in FIG. 4, the lead rule of the upper side 12a includes three cut portions 12a1 and two ruled portions 12a2 provided between the cut portions 12a1.

  The pushing area 11 is provided adjacent to the lower side of the separation area 12, and has an upper edge 11a, a lower edge 11b, and a pushing line 11c. The upper edge 11a, the lower edge 11b, and the push-in line 11c are formed in a horizontal H-shape, and are all cut lines that penetrate the cardboard paper constituting the cardboard box 1 from the front liner to the back liner.

  The position in the vertical direction is arbitrary as long as the position of the separation region 12 is below the butted portion of the upper surface outer flap 3a of the left side wall 2c and the right side wall 2d. In the present embodiment, the end portion of the adhesive tape 9 is easily positioned in the separation region 12 and the usage amount of the adhesive tape 9 is minimized, so that the separation region 12 is separated from the left side wall 2c and the right side wall 2d. It was arranged at the top of the center in the front-rear direction.

  The size of the separation region 12 can be determined according to the width of the pressure-sensitive adhesive tape 9 to be used, and the length of the upper side 12a is preferably wider than the width of the pressure-sensitive adhesive tape 9 as shown in FIG. For example, when the width of the adhesive tape 9 is about 50 mm, the length of the upper side 12a of the separation region 12 is preferably 55 to 70 mm.

  The number and the length of each cut portion 12a1 and each ruled portion 12a2 constituting the lead rule of the upper side 12a of the separation region 12 are arbitrary. In the case where the length of the upper side 12a is within the above preferable range, for example, as shown in FIG. 4, when there are three notches 12a1 and two ruled portions 12a2 on the upper side 12a, The length of the cut portion 12a1 is preferably 5 to 15 mm, the length of the central cut portion is preferably 10 to 20 mm, and the length of the ruled portion 12a2 is preferably 5 to 10 mm. Further, the numbers of the cut portions 12a1 and the ruled portions 12a2 on the upper side 12a are not particularly limited.

  The cut line of the upper edge 11a is formed of the cut line of the lower side 12b of the separation region 12. The lower edge 11b is provided below the upper edge 11a in parallel with the upper edge 11a, and both ends of the lower edge 11b coincide with both ends of the upper edge 11a in the front-rear direction. The pushing line 11c connects the center of the upper edge 11a and the center of the lower edge 11b in the vertical direction.

  The push line 11c of the push area 11 can be arbitrarily positioned and shaped as long as it connects the upper edge 11a and the lower edge 11b. However, as in the present embodiment, it is preferably provided so as to connect the center of the upper edge 11a and the center of the lower edge 11b.

  The length of the upper edge 11a and the lower edge 11b of the pushing area 11 is the same as the length of the upper edge 12a of the separation area 12. When the length of the upper side 12a of the separation region 12 is 55 to 70 mm, the length of the push-in line 11c is preferably 20 to 40 mm, and the length of the left side and the right side of the separation region 12 is 15 to 35 mm. Is preferred.

<how to use>
The usage method of the cardboard box 1 of this embodiment is demonstrated.

  First, the corrugated cardboard box 1 is in a state in which the four-side wall 2 and the bottom wall are formed, and appropriately accommodates articles therein. Then, each upper surface inner flap 3b is bent inward, overlapped with each upper upper surface flap 3b, each upper outer flap 3a is bent inward, and the upper edge of each upper surface outer flap 3a is brought into contact with each other. In this state, as shown in FIG. 1, the cardboard box 1 is sealed by sticking the adhesive tape 9 from the abutted portion of each upper outer flap 3a to the upper part of the left side wall 2c and the right side wall 2d.

  The adhesive tape 9 is pasted so that each end portion is located in the separation region 12 below the butted portion of each upper surface outer flap 3a in each of the left and right side walls 2c, 2d.

  The cardboard box 1 sealed with the adhesive tape 9 is opened by peeling the adhesive tape 9 according to the following procedure.

  First, as shown in FIG. 5, the pushing line 11c (see FIG. 1) of the pushing area 11 of the right side wall 2d is pushed with a finger. Although FIG. 5 shows a state where the pushing line 11c of the right side wall 2d is pushed, the pushing line 11c of the left side wall 2c may be pushed. Since the cardboard box 1 is provided with the pushing area 11 and the separation area 12 in both the left side wall 2c and the right side wall 2d, there is no need to change the direction of the cardboard box 1.

  FIG. 5 is a schematic diagram illustrating a state in which a gap is formed in the indentation region. When the push-in wire 11c in the push-in area 11 is pushed in, the left and right side walls 2c or the front and back portions of the push-in wire 11c on the right-hand side wall 2d (in the forward and reverse directions of the arrow A) bend inwardly in a double-folded manner, A gap 13 is formed in the pushing area 11, that is, below the lower side 12 b of the separation area 12 in 2 c or the right side wall 2 d. At this time, a line connecting each end portion of the upper edge 11a and an end portion of the lower edge 11b located below each end portion becomes a fold line 11d.

  Here, when the crease is not parallel to the width direction of the corrugated paper, the step of the core 1a (see FIG. 3) and the crease intersect. Therefore, in order to push in the push-in wire 11c, the step of the core 1a must be bent, and a strong force is required, and the step of the core 1a after the bending generates a large repulsive force to return to the original state.

  However, in the present embodiment, the corrugated cardboard constituting the corrugated cardboard box 1 is arranged so that the width direction is the vertical direction in the four-side wall 2, and the pushing area 11 is both ends of the upper edge 11a and the lower edge 11b which are cut lines. Match in the vertical direction. Therefore, the fold line 11d is parallel to the width direction of the corrugated cardboard, and it is not necessary to bend the step of the core 1a of the corrugated cardboard sheet with the fold line 11d when pushing the push-in line 11c.

  In the present embodiment, the push-in line 11c is provided so as to connect the center of the upper edge 11a and the center of the lower edge 11b. Therefore, the left side part and the right side part of the push-in wire 11c constituting the pair of double doors can be pushed in with a lighter force without bias.

  Next, a finger is inserted into the gap 13 formed in the left side wall 2c or the right side wall 2d in the pushing area 11, and the separation region 12 part of the left side wall 2c or the right side wall 2d (hereinafter referred to as "side wall separation region 12 part"). Also called)) and pull outwards. In the cut-off area 12, the left side 12c and the right side 12d are cut lines, and only the upper side 12a, which is a lead rule, is connected to the main body in the cut-out area 12 portion of the side wall. Therefore, the side wall separation region 12 is pulled up with the upper side 12a as an axis with a very light force.

  Moreover, since the pushing line 11c is provided so as to connect the center of the upper edge 11a and the center of the lower edge 11b as described above, the position of the gap 13 is below the center of the lower side 12b of the separation region 12, The separation region 12 portion of the side wall is easy to grasp.

  In this embodiment, since the length of the side 12a is wider than the width of the adhesive tape 9 as shown in FIGS. 1 and 5, the adhesive tape 9 does not overlap the left side 12c and the right side 12d of the separation region 12. Is pasted. When the adhesive tape 9 is applied in this way, the separation region 12 of the side wall is pulled up with the upper side 12a as an axis with a lighter force than when the adhesive tape 9 overlaps at least one of the left side 12c and the right side 12d. be able to.

  The crease 11d is parallel to the width direction of the corrugated paper, and even if a repulsive force is generated in the crease 11d, it is very small. Therefore, even if the hand 13 is released after the gap 13 is formed in the left side wall 2c or the right side wall 2d in the pushing area 11, the formed gap is difficult to close. Is less likely to get caught.

  When the side wall separation region 12 is pulled, the upper side 12a is separated from the main body of the side wall. In the cardboard box 1 according to the present embodiment, since the upper side 12a of the separation region 12 is a lead rule, it is lighter than when the entire upper side 12a is a simple ruled rule or when no ruled line is provided. By force, the part 12 of the side wall can be separated from the main body.

  In the present embodiment, as shown in FIG. 4, in the separation region 12, both ends of the upper side 12a are cut portions 12a1. Therefore, since the width of the adhesive tape 9 is narrower than the length of the upper side 12a of the separation region 12, when the adhesive tape 9 is peeled off by pulling up the separation region 12 portion of the side wall, the notch portions 12a1 at both ends serve as notches. The direction in which the front liner 1b of the corrugated paper sheet is peeled off is guided in the direction toward the center of the upper side 12a. Further, the range where the front liner 1b of the corrugated cardboard is peeled off is not the entire upper side 12a, but the wide width of the upper side 12a other than the cut portions 12a1 at both ends, or the width of the portion where the adhesive tape 9 is attached. It becomes.

  On the other hand, when the end of the upper side 12a is the ruled part 12a2, the direction in which the front liner 1b of the corrugated cardboard is peeled is not determined, and the front liner 1b is peeled off with the same width as the upper side 12a or wider.

  Thus, if both ends of the upper side 12a are the cut portions 12a1, the upper side 12a can be made narrower than in the case where the upper side 12a is the ruled portion 12a2 whose front liner is not cut. Therefore, the side wall separation region 12 can be separated from the main body together with the adhesive tape 9 with a lighter force.

  FIG. 6 is a schematic diagram showing a state where the separation region is pulled up and the adhesive tape is peeled off. Since the end portion of the adhesive tape 9 is adhered to the separated side wall separation region 12 portion, the side wall separation region 12 portion is further pulled up, so that the adhesive tape 9 can be easily corrugated as shown in FIG. It can be peeled off from the box 1. Therefore, it is not necessary to raise each end of the adhesive tape 9 with a nail or the like.

  Thus, according to the cardboard box 1 according to the present embodiment, not only the step of forming the gap 13 in the left side wall 2c or the right side wall 2d in the indentation area 11, but also the adhesive tape 9 after the gap 13 is formed. A series of operations until peeling from the box 1 can also be performed with a light force.

  Since the cardboard box 1 is provided with the push-in area 11 and the separation area 12 on both the left side wall 2c and the right side wall 2d, if the separation area 12 part of the remaining side wall is separated from the cardboard box 1 after opening. The cardboard box 1 can be easily and stably lifted with both hands using the opening formed in the separation region 12 of the left side wall 2c and the right side wall 2d as a handle.

  The front liner 1b depends on the relationship between the adhesive strength between the front liner 1b and the core 1a of the corrugated cardboard and the adhesive strength between the front liner 1b and the adhesive tape 9, and the speed at which the side wall separation region 12 is pulled. In some cases, the adhesive tape 9 is peeled off, and the front liner 1b is also peeled off together with the adhesive tape 9.

<Modification>
In the above-described embodiment, the case where the separation region 12 and the pushing region 11 are provided on both the left side wall 2c and the right side wall 2d has been described. However, the separation region 12 and the pushing region 11 are provided only on one of the left side wall 2c and the right side wall 2d. It may be done.

  In the separation region 12, the upper side 12a is a lead rule and the left side 12c and the right side 12d are cut lines. However, the upper side 12a, the left side 12c, and the right side 12d may be other forms, for example, perforations. It may be a lead rule. The upper side 12a may be a half-cut line that cuts the back liner 1c and the core 1a of the corrugated paper and does not cut the front liner 1b.

  Moreover, although the above-mentioned embodiment demonstrated the cardboard box 1 provided with the flap 3b in an upper surface, the flap 3b in an upper surface is not necessary. Further, the cardboard box 1 may be formed by combining a plurality of cardboard papers instead of a single cardboard paper.

  The corrugated cardboard box 1 described in the above embodiment has a configuration in which the bottom wall abuts the lower surface outer flaps 5a. However, the present invention can be applied to any cardboard box, regardless of the shape of the bottom wall, as long as it is a cardboard box that abuts the upper outer flap 3a. For example, the bottom wall may extend only from the lower edge of one of the side walls constituting the four-side wall 2, or may be formed by incorporating four flaps extending from the lower edge of each side wall. It may be done. Further, the bottom wall may be made of corrugated paper different from other parts and fixed to the four-side wall 2.

  In addition, the present invention is not limited to a corrugated cardboard box having a structure in which the upper outer flap 3a is abutted, and if the adhesive tape is attached from the upper surface to the upper part of the side surface, the portion where the end of the side adhesive tape is located This is applicable by providing the above-described separation region and providing the above-described pushing region adjacent to the lower portion of the separation region.

DESCRIPTION OF SYMBOLS 1 Corrugated cardboard box 1a Core 1b Front liner 1c Back liner 2 Four side wall 2a Front side wall 2b Rear side wall 2c Left side wall 2d Right side wall 3a Upper surface outer flap (upper surface flap)
8, 9 Adhesive tape 11 Push-in area 11a Upper edge 11b Lower edge 11c Push-in line 12 Cut-off area 12a Upper side 12a1 Cut-in part 12a2 Ruled part 12b Lower side 12c Left side 12d Right side

Claims (4)

Assembled from corrugated paper having a corrugated core, a front liner laminated on the front side of the core, and a back liner laminated on the back side of the core,
The bottom wall,
A four-side wall standing from the bottom wall;
An upper surface flap that extends from each upper edge of the front side wall and the rear side wall among the four peripheral side walls and bends inward when the upper edges are brought into contact with each other;
With
The corrugated paper is arranged so that the width direction of the corrugated paper is in the vertical direction on the four-side wall,
A corrugated cardboard box to which an adhesive tape for sealing is pasted from the upper part of the left side wall of the four side walls through the butted portion of each upper surface flap to the upper part of the right side wall of the four side walls,
Below the butted portion of each upper surface flap of at least one of the left side wall and the right side wall,
An end portion of the adhesive tape is affixed, and a horizontally-separated rectangular separation region having a lower side made of a cut line, and
Provided adjacent to the lower side of the separation region, and provided as an upper edge made of the cutting line of the separation region, and a cutting line below the upper edge, both ends of the upper edge and the front and rear A pressing region having a lower edge that coincides with a direction, and a pressing line that includes a cutting line connecting the upper edge and the lower edge;
A cardboard box comprising:   The cardboard box according to claim 1, wherein the separation region and the pushing region are provided on both the left side wall and the right side wall.   The cut-off area is characterized in that a left side and a right side are cut lines, and an upper side is a lead ruled made of a plurality of cut portions and a ruled portion provided between the cut portions. The cardboard box according to claim 1 or 2.   The cardboard box according to any one of claims 1 to 3, wherein both ends of the upper side of the cut region are the cut portions.