JP3221843U - Box sheet - Google Patents

Abstract

The present invention provides a box sheet that can be easily assembled into a box having an opening at the top. A sheet for a box is formed of a single sheet material, and is alternately connected in the left-right direction, and a pair of length surface panels 1 and a pair of width surface panels 2 assembled in a square tubular shape, and a length surface panel A box body having a pair of outer flaps 3 extending from the upper edge and a pair of inner flaps 4 extending from the upper edge of the width face panel and folded inside of the outer flaps, and having an opening between the outer flaps Assemblable, the inner flap is defined by a widthwise extending foldable line 40a and a pair of cutlines or cutlines extending distally from both ends of the foldable line and extending upward by the foldability line A foldable tongue piece 40 is included, and the tongue piece has a base end 41 whose base end is a bending easy line, and a widening part 42 continuous with the base end and wider than the base end, and the outer flap , In the assembled state at the proximal end It is supported from above by the widened portion on the side. [Selected figure] Figure 2

Description

  The present invention relates to a box sheet.

  Fruits and vegetables such as vegetables and fruits are formed from a corrugated sheet and are often transported and stored in a box having an opening at the top.

  As a box having an opening at the upper part, long side walls, short side walls, long side walls, and short side walls are connected in series in this order via a fold line, an upper lid flap is provided on the upper side of each long side wall, and the upper side of each short side wall 2. Description of the Related Art A rectangular transport case made of paper having a plug-in piece is known (see Utility Model Registration No. 3171813). In this conventional rectangular transport case, the upper lid fixing flap is connected to each insertion piece, and the upper lid fixing flap is inserted into and engaged with the insertion hole provided in the upper lid flap to fix the upper lid.

  In the above-described conventional rectangular transport case, in order to fix the upper lid in this manner, the upper lid fixing flap needs to be inserted into the insertion hole of the upper lid flap, so that the assembly operation takes time.

Utility model registration 3171813 gazette

  This invention is made in view of such a situation, and makes it a subject to provide the sheet | seat for a box which can be easily assembled to the box which has an opening in the upper part.

  The sheet | seat for boxes which concerns on 1 aspect of this invention is formed from the sheet material of 1 sheet, is connected alternately by the left-right direction, a pair of length surface panel and a pair of width surface panel which are assembled in a square cylinder shape, the said pair A pair of outer flaps extending from the upper edge of the length side panel, and a pair of inner flaps extending from the upper edge of the pair of width side panels and folded over inside the pair of outer flaps; The pair of inner flaps can be assembled into a box having an opening between the pair of outer flaps, and the pair of inner flaps extend in the width direction from the both ends of the foldable line in the extending direction to the distal end side. A tongue defined by a cutting line or a cutting line and foldable upward by the bending line is included, the tongue having a proximal end based on the bending line and the proximal end In succession And a wider widened portion than the proximal end portion, the pair of outer flaps, in the assembled state, the support can be constructed from above the widened portion on the outside of the base end portion.

  In the case of the box sheet, the pair of inner flaps includes the tongue. In the box sheet, the outer flaps are folded over to the outer side of the inner flaps, and then the tongues are bent upward, so that the pair of outer flaps are formed outside the proximal end of the tongues. The widening portion is configured to be supportable from above. That is, the pair of outer flaps is sandwiched and fixed between a portion of the inner flap excluding the tongue and the widened portion of the tongue. Thus, with the sheet for a box concerned, a pair of outer flaps can be fixed only by bending a tongue piece upwards, and a plug-in operation etc. are not required at the time of an assembly. Thus, the box sheet can be easily assembled into a box having an opening at the top.

  The maximum width of the widening portion is preferably 1.1 times or more and 1.5 times or less the width of the opening. In the case of the box sheet, when the tongue piece is bent upward at the time of assembly, the widening portion abuts against the outer flap from the lower side, and the upper flap is pulled up due to its own deflection or the like. Accordingly, by setting the maximum width of the widening portion in the above range, the support of the outer flap by the widening portion of the tongue can be maintained while facilitating the operation of bending the tongue upward.

  The extension direction length of the proximal end portion is preferably 0.8 times or more and 1.5 times or less the thickness of the sheet material. Thus, the outer flap can be supported more reliably by setting the extension direction length of the proximal end portion within the above range.

  The tongue may have a leading edge parallel to the bending line, and the length of the leading edge may be shorter than the width of the opening. Thus, by making the length of the tip end edge of the tongue piece shorter than the width of the opening, the tip end edge does not abut on the outer flap when the tongue piece is bent upward at the time of assembly. Therefore, since the tip end edge of the tongue can be easily pulled out above the outer flap, the operation of bending the tongue upward can be facilitated.

  Lead ruled line in which a plurality of cutting lines and a plurality of ruled lines formed by pushing the inner surface of the sheet material alternately continue as the bendability line and the boundary between the outer flap and the length face panel It is good. Since the tongue and the outer flap can be easily bent along the creases by setting the easy bending line and the boundary line as the lead crease as described above, the outer flap is fitted by being supported from above by the tongue The state can be maintained properly.

  Here, the directions such as “upper” and the like in the present specification are directions in the assumed use state of the box body formed by assembling the sheet for the box. Also, "inside" and "outside" refer to the inside and outside of the box respectively.

  The sheet | seat for boxes of this invention can assemble easily the box which has an opening in the upper part.

FIG. 1 is a schematic plan view (developed view) showing a box sheet according to one embodiment of the present invention. FIG. 2 is a schematic perspective view showing a box obtained by assembling the box sheet of FIG. FIG. 3 is a schematic partial enlarged view of the lower flap of the box sheet of FIG. 1. FIG. 4 is a schematic perspective view showing the box sheet of FIG. 1 in the process of assembly.

  Hereinafter, a sheet for a box concerning one embodiment of the present invention is explained, referring to drawings suitably.

  The sheet | seat for boxes which concerns on one Embodiment of this invention is formed from the sheet material of 1 sheet, as shown in FIG. In FIG. 1, a thick solid line indicates a cutting line obtained by cutting the sheet material, and a thin solid line indicates a ruled line formed by being pushed on the sheet material.

  As a sheet material which forms the sheet | seat for the said box, a corrugated-cardboard sheet | seat, a plastic board, cardboard etc. can be used, for example, Especially, a corrugated-cardboard sheet | seat is used suitably. The above-mentioned cardboard sheet may be a so-called double flute in which each core is sandwiched between three liners, as well as one in which both sides of one core are sandwiched between a pair of liners, or It may be a so-called single-faced cardboard in which a liner is attached only to one side of the core.

  When the sheet material is a corrugated sheet, 3 mm is preferable as the lower limit of the thickness of the sheet material from the viewpoint of strength. On the other hand, the upper limit of the thickness of the sheet material is not particularly limited, but 8 mm is preferable in terms of the ease of assembly into a box.

  The box sheets are alternately connected in the left-right direction (y direction in FIG. 1), and the pair of length surface panels 1 and the pair of width surface panels 2 and the pair of length surface panels 1 A pair of outer flaps 3 extending from the upper edge, a pair of inner flaps 4 extending from the upper edge of the pair of width surface panels 2 and folded over inside the pair of outer flaps 3, a pair of length surface panels 1 And a pair of outer bottom flaps 5 and a pair of inner bottom flaps 6 that extend from the lower edge of the pair of width surface panels 2 and form a bottom that seals the lower end of the square tubular body in an assembled state. Moreover, the said sheet | seat for boxes has the glue margin part 7 extended from the side edge of the length surface panel 1 arrange | positioned by one side end. The box sheet can be assembled into a box having an opening 8 between a pair of outer flaps 3 as shown in FIG.

<Length panel and width panel>
The length side panel 1 and the width side panel 2 are rectangular. Moreover, a pair of length surface panels 1 is made into an equivalent magnitude | size, and a pair of width surface panels 2 is made into an equivalent magnitude | size.

  The vertical length (length in the x direction of FIG. 1) of the length panel 1 is equal to the vertical length of the width panel 2. Further, the width (length in the y direction in FIG. 1) of the length panel 1 is equal to or greater than the width of the width panel 2. By shortening the width surface panel 2 in this manner, the outer flaps 3 can be easily supported by the tongue pieces 40 (described later) included in the inner flaps 4.

  The vertical length of the length side panel 1 and the width side panel 2, the width of the length side panel 1, and the width of the width side panel 2 are items to be accommodated in a box assembled by the sheet for the box It is determined appropriately so as to correspond to the size and the number of

<Flap outside>
Each of the pair of outer flaps 3 has a square shape, and has the same size.

  The side edge of the outer flap 3 is configured to be located outside the bending easy line 40 a of the tongue 40 described later in the assembled state. That is, the width of the outer flap 3 (the length in the y direction in FIG. 1) is adjusted to have the above-described configuration. The width of the outer flap 3 is not particularly limited as long as it has the above-described configuration, but is preferably equal to the width of the length face panel 1. By making the width of the outer flap 3 equal to the width of the length face panel 1 in this manner, the tongue 40 can easily support the outer flap 3.

  The extension direction length (the length in the x direction of FIG. 1) of the outer flap 3 is less than half of the width of the width surface panel 2. Thus, by setting the extension direction length of the outer flap 3 to less than 1/2 of the width of the width surface panel 2, as shown in FIG. 2, the box assembled by the sheet for the box is a pair of outer flaps It can be set as the structure which has the opening 8 between three. In addition, the width | variety of the opening 8 is given by (width | variety of the width surface panel 2)-2 * (extension direction length of the outer flap 3).

  The lower limit of the width of the opening 8 is preferably 0.3 times the width of the width surface panel 2 and more preferably 0.4 times. On the other hand, the upper limit of the width of the opening 8 is preferably 0.6 times the width of the width surface panel 2 and more preferably 0.5 times. If the width of the opening 8 is less than the above-mentioned lower limit, the area of the opening 8 becomes narrow, and there is a possibility that the air permeability to the stored matter may be impaired. Conversely, if the width of the opening 8 exceeds the above upper limit, the upper lid surface formed by the outer flap 3 and the inner flap 4 becomes too small, and boxes assembled by the sheet for the box may be used by stacking vertically There is a fear that it will be difficult, or the opening 8 may become too large and the contents may fall. The width of the opening 8 can be adjusted by the extension direction length of the outer flap 3 as described above.

  The border line 3a between the outer flap 3 and the length face panel 1 may be a crease formed by pressing one side in consideration of mass productivity and the like, but a plurality of cutting lines and the inner surface of the sheet material It is preferable that a plurality of ruled lines formed by stroking are alternately formed as lead ruled lines. Since the outer flap 3 can be easily bent along the fold line by setting the boundary 3a as the lead crease in this manner, the fitted state in which the outer flap 3 is supported from above by the tongue piece 40 is appropriately maintained. can do.

<Inner flap>
Each of the pair of inner flaps 4 has a square shape, and has the same size.

  The side edge of the inner flap 4 is positioned so as to have a region where the outer flap 3 and the inner flap 4 overlap in the assembled state. That is, the width of the inner flap 4 (the length in the y direction in FIG. 1) is adjusted to have the above-described configuration. The width of the inner flap 4 is not particularly limited as long as it has the above-described configuration, but is preferably equal to the width of the side panel 2. By making the width of the inner flap 4 equal to the width of the width surface panel 2 in this manner, it is possible to secure a region where the outer flap 3 and the inner flap 4 overlap and to support the outer flap 3 easily.

  The extension direction length (length in the x direction in FIG. 1) of the inner flap 4 is not particularly limited, but it is preferable to be equal to the extension direction length of the outer flap 3 from the viewpoint of the utilization efficiency of the sheet material. .

(Tongue)
The pair of inner flaps 4 encloses the tongue piece 40. As shown in FIG. 1, the tongue piece 40 is a pair of foldable lines extending in the width direction, a tip edge 40b parallel to the foldable line 40a, and a pair of extending sides in the extension direction from both ends of the foldable line 40a. It is defined by the cutting line 40c, and can be bent upward by the bending easy line 40a.

  As shown in FIG. 3, the tongue piece 40 has a base end 41 having the bending easy line 40 a as a base end, and a wide end 42 which is continuous with the base end 41 and wider than the base end 41. . Further, as shown in FIG. 2, the pair of outer flaps 3 is configured to be able to be supported from above on the widening portion 42 outside the proximal end portion 41 in an assembled state.

  The bending easy line 40 a is provided in parallel with the boundary between the inner flap 4 and the width surface panel 2. Further, the length of the bending line 40a is equal to or less than the width of the opening 8, and the bending line 40a is disposed so as to be fitted between the pair of outer flaps 3 in the assembled state. At that time, the bending easy line 40 a may be symmetrical with respect to the center in the width direction of the opening 8.

  As a minimum of the distance from the above-mentioned boundary line of bending easy line 40a, 0.2 time of the extension direction length of inner flap 4 is preferred, and 0.3 times is more preferred. On the other hand, as an upper limit of the distance from the above-mentioned boundary line of bending easy line 40a, 0.6 times of the extension direction length of inner flap 4 is preferred, and 0.5 times is more preferred. If the distance from the above boundary line of the bending line 40a is less than the above lower limit, the upper lid surface of the box becomes too small, and it becomes difficult to vertically stack and use the box assembled from the sheet for the box There is a fear. Conversely, if the distance from the boundary line of the bending line 40a exceeds the upper limit, the area of the tongue 40 may be insufficient, and the support of the outer flap 3 by the tongue 40 may be difficult.

  The bendable line 40a may be a lead ruled line in which a plurality of cutting lines and a plurality of ruled lines formed by pushing the inner surface of the sheet material alternately continue. Since the tongue 40 can be easily bent along the creases by making the bending line 40a into a lead crease in this manner, the fitting state in which the outer flap 3 is supported from above by the tongue 40 can be appropriately set. Can be maintained.

  Although the tip end edge 40b doubles as the tip end edge of the inner flap 4 in FIG. 2, this is not an essential configuration, and a configuration in which the tip end edge 40b of the tongue piece 40 is included in the inner flap 4; A part of the inner flap 4 may be hollowed out. In this case, the end portions on the extension direction side (the side opposite to the bending easy line 40a) of the pair of cutting lines 40c are connected to each other to form the tip end edge 40b.

  The length of the leading edge 40 b of the tongue 40 may be shorter than the width of the opening 8 and may be disposed so as to fit between the pair of outer flaps 3. By thus making the length of the tip end edge 40 b of the tongue 40 shorter than the width of the opening 8, the tip end edge 40 b does not abut on the outer flap 3 when the tongue 40 is bent upward at the time of assembly. For this reason, since the tip edge 40b of the tongue 40 can be easily pulled out above the outer flap 3, the operation of bending the tongue 40 upward can be facilitated. Further, when the tip end edge 40b of the tongue piece 40 is disposed so as to be fitted between the pair of outer flaps 3, the tip end edge 40b may be symmetrical with respect to the center in the width direction of the opening 8.

  The base end 41 having the base of the bending line 40 a is provided so as to be fitted between the pair of outer flaps 3 in the assembled state. On the other hand, the widened portion 42 is wider than the proximal end 41, and at least the width of the widened portion 42 on the proximal end 41 side is larger than the width of the opening 8. That is, when viewed in the direction from the bending line 40a to the distal end edge 40b, the portion smaller than the width of the opening 8 is the proximal end 41, and the distal end 40b side of the tongue piece 40 from the proximal end 41 is the widened portion 42. is there.

  The lower limit of the extension direction length (the length in the x direction in FIG. 1) of the base end portion 41 is preferably 0.8 times the thickness of the sheet material, and more preferably 1.0 times. On the other hand, the upper limit of the extension direction length of the base end portion 41 is preferably 1.5 times the thickness of the sheet material, and more preferably 1.3 times. As shown in FIG. 2, in the assembled state, the outer flap 3 passes the outside of the proximal end portion 41 and is configured to be supported from above by the widening portion 42. That is, in the assembled state, the outer flap 3 is sandwiched in the gap between the widening portion 42 and the portion of the inner flap 4 excluding the tongue piece 40, and the extension direction length of the base end portion 41 is It corresponds to the width of the gap for sandwiching the outer flap 3. For this reason, when the extension direction length of the base end portion 41 is less than the above-mentioned lower limit, the outer flap 3 may not be accommodated in the gap, and it may be difficult to support from the upper side by the widening portion 42. Conversely, when the extension direction length of the base end portion 41 exceeds the above-described upper limit, there is a possibility that the outer flap 3 can not be sufficiently fixed without sufficient supporting force from the upper side by the widening portion 42.

  As shown in FIG. 3, in the widening portion 42 continuous to the base end portion 41, the end edge on the base end portion 41 side (first end edge 42 a in FIG. 3) is easily bent from the boundary with the base end portion 41. It may extend parallel to 40a. The first end edge 42a of the widening portion 42 abuts against the outer flap 3 in the assembled state, and becomes a portion to support from above, so by making the first end edge 42a parallel to the bending easy line 40a The length of the portion in contact with the flap 3 can be secured, and the outer flap 3 can be reliably supported.

  Further, as shown in FIG. 3, the widening portion 42 may have a region (a region corresponding to the second edge 42b in FIG. 3) in which the width gradually increases from the tip end edge 40b toward the base end portion 41. . When assembling the box sheet into a box, the widening portion 42 passes from the lower side of the outer flap 3 to the upper side while in contact with the outer flap 3. At this time, since the widening section 42 passes upward from the lower end of the outer flap 3 first from the tip edge 40b side, the width of the widening section 42 from the bottom of the outer flap 3 is reduced by reducing the width on the tip edge 40b It can be made easy to pass upward.

  The lower limit of the maximum width of the widening portion 42 is preferably 1.1 times the width of the opening 8 and more preferably 1.2 times. On the other hand, the upper limit of the maximum width of the wide portion 42 is preferably 1.5 times the width of the opening 8 and more preferably 1.3 times. There exists a possibility that support of the outer flap 3 by the tongue piece 40 may become difficult for the maximum width of the wide part 42 to be less than the said minimum. Conversely, if the maximum width of the widening section 42 exceeds the upper limit, it becomes difficult to pass the widening section 42 upward from below the outer flap 3 at the time of assembly, and the ease of assembly of the box sheet can not be obtained sufficiently. There is a fear.

  In addition, as shown in FIG. 2, the tip end 40 b side of the tongue piece 40 tends to be inclined upward at an angle less than 90 ° by the reaction force of the sheet material. However, the tilt angle can be changed relatively freely. For example, when a plurality of boxes are assembled using the box sheet, when the other box is stacked on the top of one box, the weight of the upper box aligns the tongue 40 with the outer flap 3 Fall down like that. Therefore, even when the boxes are stacked, the tongues 40 do not interfere. In the case where the box bodies are stacked and used, the extension direction length of the base end portion 41 is set to 1.0 times or more the thickness of the sheet material so that the tongue piece 40 easily falls along the outer flap 3 Is preferred.

<Outer bottom flap and inner bottom flap>
The pair of outer bottom flaps 5 and the pair of inner bottom flaps 6 are configured to be able to close the bottom of the box.

  Specifically, the outer bottom flap 5 is configured to be able to butt the tip edges of the pair of outer bottom flaps 5, and the extension direction length (length in the x direction of FIG. 1) of the outer bottom flap 5 is For example, it is 1/2 of the width of the width surface panel 2. Thus, the bottom of the box can be closed.

  On the other hand, the extension direction length of the inner bottom flap 6 is not particularly limited, but can be equal to the length of the outer bottom flap 5.

  The width of the outer bottom flap 5 and the inner bottom flap 6 (the length in the y direction in FIG. 1) is not particularly limited, but should be equal to the width of the length face panel 1 and the width face panel 2 extending respectively. Is preferred.

  The pair of outer bottom flaps 5 and the pair of inner bottom flaps 6 are folded at a right angle to the extending length face panel 1 and the width face panel 2 respectively when assembled, and the inner bottom flaps 6 are overlapped so as to be inside To form the bottom of the box.

<Adhesive portion>
The glue margin portion 7 is provided to connect one side end and the other side end of the pair of length surface panels 1 and the pair of width surface panels 2 alternately connected in the left-right direction. That is, when the pair of length surface panels 1 and the pair of width surface panels 2 connected in the left-right direction are assembled in a square tube shape, the width surface panel 2 located at the other side end where the adhesive margin portion 7 is not provided is It becomes possible to abut on the glue margin part 7. By sticking the contact portion of the width surface panel 2 to the adhesive margin portion 7, the pair of length surface panels 1 and the pair of width surface panels 2 can be configured in an endless manner. Alternatively, instead of sticking, bonding may be performed by wire bonding or the like.

<Assembly method of box>
The assembling method of the box body which assembles the said box sheet | seat into a box body comprises a square cylinder part assembly process, a bottom part assembly process, and a lid assembly process.

(Square tube part assembly process)
In the square tubular part assembling step, a pair of length face panels 1 and a pair of width face panels 2 which are alternately connected in the left-right direction are assembled in a square tube shape.

  Specifically, follow the procedure below. First, the length surface panel 1 located at one side end of the pair of length surface panels 1 and the pair of width surface panels 2 connected alternately in the left-right direction is folded to the inner surface side of the adjacent width surface panel 2 Overlap, the width surface panel 2 located at the other side end is folded on the inner surface side of the adjacent length surface panel 1. Then, the adhesive margin portion 7 is attached to the inner surface on the other side in the left-right direction of the width surface panel 2 (the opposite side to the side connected with the length surface panel 1). Thereby, a pair of length surface panels 1 and a pair of width surface panels 2 are connected endlessly. The sheet | seat for the said box is provided to a user (user of a box) in this state. The adhesion of the adhesive margin portion 7 to the width surface panel 2 can be performed using, for example, an adhesive, a stapler or the like.

  Next, the pair of length surface panels 1 and the pair of width surface panels 2 connected in an endless manner are spread in a square tube shape. Thereby, the side of the box is assembled in a square tube shape.

(Bottom assembly process)
In the bottom assembly step, the bottom of the box is assembled by the pair of outer bottom flaps 5 and the pair of inner bottom flaps 6.

  Specifically, follow the procedure below. First, the pair of inner bottom flaps 6 are bent at right angles to the width surface panel 2. Next, the pair of outsole flaps 5 are bent at right angles to the length face panel 1 so as to contact the outer surface thereof. The pair of outer bottom flaps 5 is configured to be able to butt the tip edges, so that a bottom portion is formed by sticking a sealing tape, for example, to the butt portion.

(Lid assembly process)
In the lid assembly step, a lid of a box having an opening 8 is assembled by the pair of outer flaps 3 and the pair of inner flaps 4.

  Specifically, follow the procedure below. First, the pair of inner flaps 4 are bent at right angles to the width surface panel 2. At this time, the tongue 40 is perpendicular to the width surface panel 2 in conjunction with the bending of the inner flap 4. That is, the tongue 40 is not bent at the bending easy line 40a. Further, the pair of outer flaps 3 are bent at a right angle to the length face panel 1 so as to touch the outer surface thereof.

  At this stage, as shown in FIG. 4, an opening 8 is formed between the pair of outer flaps 3. Further, in the tongue piece 40, a part of the widening portion 42 is in contact with the pair of outer flaps 3 from below. From this state, the tongue 40 is bent upward by the bending easy line 40a. At this time, the portion of the widening portion 42 that is in contact with the outer flap 3 from the lower side moves upward of the outer flap 3 due to its own bending and lifting of the outer flap 3. By this bending, as shown in FIG. 2, the pair of outer flaps 3 is configured to be able to be supported from above on the widening portion 42 outside the proximal end portion 41 of the tongue piece 40.

  In addition, since the tongue piece 40 is contained in each of a pair of inner flaps 4, the above-mentioned procedure is performed with respect to each tongue piece 40. FIG.

  As described above, the box sheet can be assembled into a box. The lid assembly step can be performed first regardless of the order of the bottom assembly step and the lid assembly step.

<Advantage>
In the box sheet, the pair of inner flaps 4 includes the tongue piece 40. In the box sheet, the outer flaps 3 are folded on the outer side of the inner flaps 4, and then the tongue pieces 40 are bent upward, so that the pair of outer flaps 3 are tongues outside the base end portion 41 of the tongue pieces 40. The widening portion 42 of the piece 40 is configured to be able to be supported from above. That is, the pair of outer flaps 3 is sandwiched and fixed between the portion of the inner flap 4 excluding the tongue piece 40 and the widening portion 42 of the tongue piece 40. As described above, in the case of the sheet for a box, the pair of outer flaps 3 can be fixed only by bending the tongue piece 40 upward, and the insertion work or the like is not required at the time of assembly. Accordingly, the box sheet can be easily assembled into a box having the opening 8 at the top.

Other Embodiments
The above embodiment does not limit the configuration of the present invention. Therefore, the above-mentioned embodiment can omit, substitute or add the components of each part of the above-mentioned embodiment based on the description of the present specification and technical common sense, and all of them are interpreted as belonging to the scope of the present invention. It should.

  In the above-mentioned embodiment, although the case where a tongue was defined by a bending easy line and a pair of cutting lines was explained, it can replace with a cutting line and can also use a cutting easy line. This easy-to-cut line can be, for example, a perforation formed by a plurality of cut lines disposed at intervals. This easy-to-cut line is cut when assembling the box sheet into a box.

  Although the sheet | seat for boxes has an adhesive margin part and the structure which assembles a box by adhesion | pasting to this adhesive margin part was demonstrated in the said embodiment, the method of assembling a box is not limited to this. For example, it can also be constituted by sticking a sealing tape. In this case, the above-mentioned margin part can be made unnecessary.

  Moreover, the specific structure for forming the bottom part of a box is not limited to the structure of the said embodiment. For example, the box sheet may be formed at the bottom by one bottom flap extending from the lower edge of one length face panel.

  As mentioned above, the box sheet of this invention can assemble easily the box which has an opening in the upper part.

DESCRIPTION OF SYMBOLS 1 Length side panel 2 Width side panel 3 Outer flap 3a Boundary line 4 Inner flap 40 Tongue piece 40a Easy bending line 40b Tip edge 40c Cutting line 41 Base end 42 Widening part 42a 1st end edge 42b 2nd end edge 5 Outer bottom Flap 6 inner bottom flap 7 glue margin 8 opening

Claims (5)

Formed from a single sheet of material,
A pair of length surface panels and a pair of width surface panels which are alternately connected in the left-right direction and assembled in a square tube shape,
A pair of outer flaps extending from the upper edge of the pair of length panels;
A pair of inner flaps extending from an upper edge of the pair of width surface panels and folded inside the pair of outer flaps;
It can be assembled into a box having an opening between the pair of outer flaps,
The pair of inner flaps is defined by a foldable line extending in the width direction and a pair of cut or split lines extending from both ends of the foldable line to the distal end side in the extending direction and upward by the foldable line Containing a foldable tongue,
The tongue piece has a proximal end having a proximal end with the bendable line, and a widening portion continuous with the proximal end and wider than the proximal end.
A box sheet configured such that the pair of outer flaps can be supported from above on the widening portion outside the base end portion in an assembled state.   The sheet | seat for boxes of Claim 1 whose largest width of the said wide part is 1.1 times or more and 1.5 times or less of the width | variety of the said opening.   The sheet for boxes according to claim 1 or 2, wherein the extension direction length of the base end portion is 0.8 times or more and 1.5 times or less the thickness of the sheet material.   The box sheet according to claim 1, 2 or 3, wherein the tongue has a leading edge parallel to the bending line and the length of the leading edge is shorter than the width of the opening. Lead ruled line in which a plurality of cutting lines and a plurality of ruled lines formed by pushing the inner surface of the sheet material alternately continue as the bendability line and the boundary between the outer flap and the length face panel The box sheet according to any one of claims 1 to 4, which is

Images