JP2018127242A - Sheet for box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet for a box which can form a box body capable of tearing off an outer flap pasted on an inner flap easily.SOLUTION: A sheet for a box has an opening start part which is formed over a short-side side panel and an inner flap at an area disposed under a tip edge of an outer flap in an assembled state, and can be pushed inside a box body. The opening start part is defined by: a pair of start part cutting lines formed over the short-side side panel and the inner flap; a first start part folding line formed so as to connect between end parts of the pair of start part cutting lines in parallel with a base end edge of the inner flap, in the inner flap; and a second start part folding line formed so as to connect between end parts of the pair of start part cutting lines in parallel with an upper edge of the short-side side panel, in the short-side side panel.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a box sheet.

  For example, various boxes formed from paper sheets such as cardboard are widely used as packaging containers for storing various products.

  Among such boxes, a sheet in which a pair of short side walls and a pair of long side walls are alternately connected is bent and connected in a square tube shape, and inner flaps respectively extending from the upper and lower end edges of the short side walls are provided. A type that seals the upper and lower openings of the rectangular cylindrical part by folding each of them toward the inside of the rectangular cylindrical part and folding the outer flaps extending from the upper and lower end edges of the long side wall to the outer side of the inner flap. A so-called mandarin orange box type box is particularly widely used.

  The A-type box maintains the sealed state by sticking an adhesive tape along the joint of the outer flaps, or by bonding the inner flap and the outer flap with glue. When opening a general A-type box with the inner and outer flaps glued together and sealed, open the outer flap by placing a fingernail between the inner and outer flaps. It is necessary to peel off from the flap, and the opening work is not easy.

  In view of this, Japanese Patent Application Laid-Open No. 2008-105690 discloses a pair that extends from the front edge to a region that does not overlap the inner flap when the outer flap is assembled in order to facilitate opening of the box that attaches the outer flap to the inner flap. It has been proposed to form a push-bending portion that is formed by a notch and a fold connecting between the ends of the pair of notches and can be pushed into the inside of the box. According to this configuration, a hand can be inserted into the opening formed by pushing the pushing and bending portion into the inside of the box, and the front end portion of the opposing outer flap can be gripped and peeled off from the inner flap.

  However, in the configuration described in the above publication, a push-bend portion is formed on the top surface of the box, so that an external force is unintentionally applied when the container is to be handled while being kept in a sealed state, for example during transportation. Then, the push-bending part may be pushed in. If an opening is formed in the box body by such an unintentional pushing / bending portion being pushed in, the risk of contamination of foreign matters increases.

  Furthermore, in the configuration described in the above publication, it is necessary to form a push-bend portion at the distal end portion of the outer flap located between the pair of inner flaps in the assembled state. For this reason, since the center part of the front-end edge of the opposing outer flap is held and the outer flap is peeled off simultaneously from the pair of inner flaps, a considerably large force is required for this work.

JP 2008-105690 A

  In view of the above circumstances, an object of the present invention is to provide a box sheet that can form a box that can easily peel off an outer flap that is glued to an inner flap.

  A box sheet according to the present invention made to solve the above problems is formed of a single sheet, can be assembled to form a box, and is connected to a square cylinder in an assembled state. A side panel and a pair of short side panels, a pair of outer flaps extending from the upper edge of the long side panel and the leading edges are butted together in an assembled state, and extending from the upper edge of the short side panel A box sheet comprising a pair of inner flaps stacked inside the outer flap in an assembled state, wherein the short side panel is disposed in a region disposed below the leading edge of the outer flap in the assembled state. And has an opening start portion that can be pushed into the inside of the box, and the opening start portion is formed across the short side panel and the inner flap. one A start line of the first start part fold line formed on the inner flap so as to connect between the ends of the pair of start part cutting lines in parallel to the base end edge of the inner flap, and the short side The side panel is defined by a second start part fold line formed so as to connect between the ends of the pair of start part cutting lines in parallel to the upper edge of the short side panel.

  The box formed by assembling the box sheet has the pair of start part cutting lines, the first start part fold line, and the second start part fold line below the end part of the joint of the front edge of the outer flap. And has an opening start portion that can be pushed into the inside of the box, so that a finger can be inserted into a recess formed by pushing the opening start portion to grip the corner edge of the side edge of the outer flap. . As a result, the side edge tip corner of the outer flap can be easily pulled up, and the separation of the outer flap from the inner flap can be sequentially advanced from the outer flap side edge tip corner, so the outer flap is relatively small. It can be peeled from the inner flap by force. Thus, the box sheet can form a box that can easily peel off the outer flap glued to the inner flap.

  In the box sheet, the opening start portion further includes a third start fold line parallel to the second start fold line between the upper edge of the short side panel and the second start fold line. It is preferable to have. According to this configuration, since the opening start portion can be pushed in so as to fold the third start portion fold line, the opening start portion can be pushed more easily, and the side edge tip corner portion of the outer flap can be gripped. Therefore, it is possible to more reliably form a space in which a finger can be inserted.

  In the box sheet, the third start part fold line is preferably a half-cut line obtained by cutting only the back surface side of the sheet. According to this configuration, since the sheet can be more reliably folded along the third start portion fold line, the opening start portion can be more easily pushed, and the side edge tip corner portion of the outer flap can be A space in which a finger can be inserted for gripping can be more reliably formed. Further, by setting the third start part fold line for folding the sheet to the half cut line, for example, the first start fold line and the second start part fold line for folding the sheet are pushed to the back surface of the sheet. In the case of forming the ruled line, the third start part fold line, the first start part fold line, and the second start part fold line can be formed simultaneously.

  In the box sheet, it is preferable that the outer flap has a knob part fold line formed from the vicinity of the opening edge of the leading edge to the vicinity of the edge of the opening edge of the opening edge. According to this configuration, a small triangular knob portion having the apex at the corner of the side edge of the outer flap to be gripped by inserting a finger into the recess formed by the opening start portion is defined by the knob portion folding line. . For this reason, the outer flap can be peeled off from the inner flap more easily by first raising the knob portion outside the box and gripping the knob portion again.

  In the box sheet, the outer flap preferably has an opening fold line formed from the vicinity of the base end of the side edge on the opening start portion side to the position farther from the opening start portion than the center of the leading edge. According to this configuration, by inserting a finger into the recess formed by the opening start portion and pulling up the side edge tip corner portion of the outer flap, the outer flap is folded along the opening folding line and the outer flap is opened. It can be peeled off only from the inner flap on the start side. As a result, it becomes easier to peel off the outer flap from the inner flap on the opening start portion side, and an opening is formed that makes it possible to put a hand on a portion that does not overlap with the inner flap of the opening folding line. It is also easy to peel off the outer flap from the inner flap opposite to the opening start portion.

  “Nearby” means a region whose distance from a reference position is 0.3 times or less of the average width of the short side panel.

  As described above, the box sheet of the present invention can form a box body that can easily peel off the outer flap glued to the inner flap.

It is a typical top view (development drawing) which shows the sheet for boxes of one embodiment of the present invention. It is a typical perspective view which shows the boxing state of the box formed by assembling the box sheet of FIG. It is a typical perspective view which shows the first process of opening of the box of FIG. It is a typical perspective view which shows the next process of FIG. 3 of opening of the box of FIG. It is a typical perspective view which shows the next process of FIG. 4 of opening of the box of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

[Box sheet]
FIG. 1 shows a box sheet according to an embodiment of the present invention. The box sheet is formed from a single sheet and can be assembled to form the box shown in FIG. In FIG. 1, a thick solid line indicates an edge obtained by cutting the sheet, a thin solid line indicates a ruled line formed by pushing the back side of the sheet, and a thin two-dot chain line indicates a half line obtained by cutting only the back side of the sheet. A cut line is shown.

  As the sheet for forming the box sheet, for example, a corrugated cardboard sheet, a plastic board, a cardboard or the like can be used, and among them, a corrugated cardboard sheet is preferably used.

  The corrugated cardboard sheet may be a so-called double flute in which a core is sandwiched between three liners as well as a sheet having both sides of a core sandwiched between a pair of liners. It may be a so-called single-sided cardboard in which a liner is stuck only on one side.

  The box sheet includes a pair of long-side side panels (first long-side side panel 1 and second long-side side panel 2) connected in a rectangular tube shape in an assembled state, and a pair of short-side side panels (first A short side panel 3 and a second short side panel 4). More specifically, the first long side surface panel 1, the first short side surface panel 3, the second long side surface panel 2, and the second short side surface panel 4 are connected in this order in the left-right direction. On the side opposite to the first short-side side panel 3 of the first side, a margin 5 that is adhered to the vicinity of the side edge of the second short-side side panel 4 opposite to the second long-side side panel 2 is connected. .

  Further, the box sheet extends from the upper edges of the first long side surface panel 1 and the second long side surface panel 2 and has a pair of outer flaps (outside the first lid) whose leading edges are butted together in an assembled state. A pair of flaps 6 and second outer lid flaps 7) and a pair of first short side panel 3 and second short side panel 4 that are superposed on the inner sides of outer lid flaps 6 and 7 in an assembled state. And flaps in the lid (first lid flap 8 and second lid flap 9).

  Further, the box sheet extends from the lower edges of the first long side surface panel 1 and the second long side surface panel 2 and has a pair of outer bottom flaps (first outer bottom edges) in which the leading edges are butted together in an assembled state. A pair of flaps 10 and second outer bottom flaps 11) and a pair of first short side surface panels 3 and second short side surface panels 4 that extend from the lower edges of the bottom outer flaps 10 and 1 in an assembled state. Bottom flaps (first bottom flap 12 and second bottom flap 13).

  The box sheet is folded back between the first long side panel 1 and the first short side panel 3 and between the second long side panel 2 and the second short side panel 4, and the margin 5 is the first. 2 A pair of long-side side panels 1 and 2 and a pair of short-side side panels 3 by being attached to the back surface of the region near the side edge opposite to the second long-side side panel 2 of the short-side side panel 4. 4 is connected in an endless cylindrical shape. Adhesion of the margin 5 to the second short side surface panel 4 may be a method using a stapler or the like in addition to a method using an adhesive.

  In the present specification, “upper” and “lower” mean up and down in the assumed general usage, and “left-right direction” is an assumption of a box formed by assembling the box sheet. This means a direction corresponding to the horizontal direction in a general usage mode, but it is not intended to limit the orientation at the time of manufacture of the box sheet or the orientation at the time of use of the box formed by assembling the box sheet. .

  When the box sheet is formed from a corrugated cardboard sheet, in order to improve the buckling strength of the box body in consideration of the possibility of stacking the box body assembled from the box sheet up and down, the core ridge line Are preferably oriented in the vertical direction, that is, in a direction perpendicular to the connecting direction of the side panels 1, 2, 3, and 4.

  The box sheet usually has a margin 5 attached to the second short side panel 4, and the first long side panel 1 and the second short side panel 4 are the first short side panel 3 and the second side panel 4. It is provided to the user in a folded state in close contact with the long side panel 2. Thus, by making the box sheet into a folded state, a plurality of the box sheets can be stacked and efficiently transported and stored, and the margin 5 is previously attached to the second short side panel 4. Therefore, the cardboard box sheet can be easily assembled.

  The box formed by assembling the box sheet is sealed by adhering the lid flaps 8 and 9 and the lid flaps 6 and 7 with an adhesive G as shown in FIG.

  In addition, the box sheet is formed across the first short side surface panel 3 and the first in-lid flap 8 in a region disposed below the leading edge of the outer lid flaps 6 and 7 in the assembled state. And an opening start portion 14 that can be pushed into the inside of the box. That is, the opening start part 14 may dent inward the belt-shaped area | region which is the state folded in the mountain state (folded convexly outward) in the sealed state of the box formed by assembling the box sheet. It is configured to be able to.

  When the box sheet has the opening start portion 14, the box body formed by assembling the box sheet has a finger inserted into the recess formed by pushing the opening start portion 14 as shown in FIG. 3. The side edge tip corners of the outer lid flaps 6 and 7 can be gripped. Thereby, the side edge tip corners of the lid outer flaps 6 and 7 can be easily pulled up, and the separation of the lid outer flaps 6 and 7 from the first lid flap 8 is the side edge of the lid outer flaps 6 and 7. Since it advances one by one from the front-end | tip corner | angular part side, the flaps 6 and 7 outside a lid | cover can be peeled from the flap 8 in a 1st lid | cover with comparatively small force.

<Opening start part>
The unsealing start part 14 is a pair of start part cutting lines (a first start part cutting line 15 and a second start part cutting line 16) formed across the first short side panel 3 and the first lid flap 8. ) And a first start portion formed on the first lid flap 8 so as to connect between the ends of the pair of start portion cutting lines 15 and 16 in parallel with the base end edge of the first lid flap 8. The fold line 17 is formed on the first short side surface panel 3 so as to be connected in parallel to the upper edge of the first short side surface panel 3 so as to connect between the ends of the pair of start portion cutting lines 15 and 16. And 2 start fold lines 18.

  Moreover, the opening start part 14 further has a third start part fold line 19 parallel to the second start part fold line 18 between the upper edge of the first short side panel 3 and the second start part fold line 18. .

(Start line cutting line)
The start part cutting lines 15 and 16 are formed symmetrically so as to bend or curve in a convex shape outward in the left-right direction with the point intersecting with the upper edge of the first short side panel 3 as a vertex. Thus, the start part cutting lines 15 and 16 are convex outward, so that the opening start part 14 can be easily pushed into the box body, and the recesses formed by the pushing of the opening start part 14 are formed. It is easy to insert your finger.

  As a minimum of the length of the up-and-down direction of start part cutting lines 15 and 16, 4 cm is preferred and 5 cm is more preferred. On the other hand, the upper limit of the length in the vertical direction of the start part cutting lines 15 and 16 is preferably 10 cm, and more preferably 8 cm. When the length of the start part cutting lines 15 and 16 in the vertical direction is less than the lower limit, it may not be easy to insert a finger into the recess formed by pushing the opening start part 14. On the contrary, when the length of the start part cutting lines 15 and 16 in the vertical direction exceeds the upper limit, the strength of the box formed by assembling the box sheet may be unnecessarily lowered.

  As a minimum of the maximum space | interval of the start part cutting lines 15 and 16, 3 cm is preferable and 4 cm is more preferable. On the other hand, the upper limit of the maximum distance between the start portion cutting lines 15 and 16 is preferably 8 cm, and more preferably 6 cm. When the maximum distance between the start part cutting lines 15 and 16 is less than the lower limit, it may be difficult to grip the side edge tip corners of the outer lid flaps 6 and 7. On the contrary, when the maximum interval between the start part cutting lines 15 and 16 exceeds the above upper limit, the strength of the box formed by assembling the box sheet may be unnecessarily lowered.

(First start part fold line and second start part fold line)
The first start part fold line 17 and the second start part fold line 18 may be any sheet that can easily bend the sheet along the first start part fold line 17. Is preferable in that it is easy and the decrease in strength of the sheet is relatively small.

  The 1st start part fold line 17 and the 2nd start part fold line 18 are for suppressing the strength fall of the box which assembles the box sheet concerned, and enlarging the crevice formed by pushing of opening opening part 14 Furthermore, it is preferable that the lengths are equal to each other.

  As a minimum of the length of the 1st start part fold line 17 and the 2nd start part fold line 18, 1 cm is preferred and 2 cm is more preferred. On the other hand, as an upper limit of the length of the 1st start part fold line 17 and the 2nd start part fold line 18, 5 cm is preferred and 4 cm is more preferred. When the lengths of the first start part fold line 17 and the second start part fold line 18 are less than the lower limit, it may be difficult to insert a finger into the recess formed by pushing the opening start part 14. Conversely, when the lengths of the first start part fold line 17 and the second start part fold line 18 exceed the above upper limit, the strength of the box formed by assembling the box sheet may be unnecessarily lowered.

  As a lower limit of the ratio of the distance between the second start part fold line 18 and the upper edge of the first short side panel 3 to the distance between the first start part fold line 17 and the upper edge of the first short side panel 3, 1.2 is preferable and 1.5 is more preferable. On the other hand, the upper limit of the ratio is preferably 3.0 and more preferably 2.5. When the ratio is less than the lower limit, it may not be easy to push the box sheet into the box formed by assembling the box sheet. On the contrary, when the ratio exceeds the upper limit, the opening start portion 14 becomes larger than the area of the back surface of the outer lid flaps 6 and 7 exposed by the opening start portion 14, so that the outer cover flaps 6 and 7. There is a possibility that the gripping of the side edge tip corner portion may not be facilitated sufficiently, and the strength of the box formed by assembling the box sheet may be unnecessarily lowered.

  The lower limit of the distance between the first start part fold line 17 and the upper edge of the first short side panel 3 is preferably 1.5 cm, and more preferably 1.8 cm. On the other hand, the upper limit of the distance between the first start part fold line 17 and the upper edge of the first short side panel 3 is preferably 4.0 cm, and more preferably 3.0 cm. When the distance between the first start part fold line 17 and the upper edge of the first short side panel 3 is less than the lower limit, the area of the back surface of the outer lid flaps 6 and 7 exposed by the opening start part 14 is insufficient. As a result, there is a possibility that the gripping of the side edge tip corners of the outer lid flaps 6 and 7 cannot be facilitated sufficiently. On the contrary, when the space | interval of the 1st start part fold line 17 and the upper edge of the 1st short side surface panel 3 exceeds the said upper limit, the box sheet which the said sheet | seat for boxes is assembled because the whole opening start part 14 becomes large The strength of the body may be unnecessarily reduced.

(3rd start part fold line)
The third start part fold line 19 may be any sheet that can easily fold the sheet along the third start part fold line 19, but the start part cut line may be a half-cut line formed by cutting only the back side of the sheet. 15, 16 and the first start part fold line 17 and the second start part fold line 18 can be processed together from the back side of the sheet, and the appearance of the box formed by assembling the box sheet is impaired. It is preferable in that there is no.

  The distance between the third start part fold line 19 and the second start part fold line 18 is preferably equal to the distance between the first start part fold line 17 and the upper edge of the first short side panel 3. As a result, when the opening start portion 14 is pushed in and the sheet between the first start portion fold line 17 and the third start portion fold line 19 is stretched in a planar shape, the sheet in this region becomes the first short-side side panel 3 and The sheets between the third start part fold line 19 and the second start part fold line 18 are parallel to the outer lid flaps 6 and 7. For this reason, it becomes easy to insert a finger into the concave portion formed by pushing the opening start portion 14 and grip the edge corners of the side edges of the outer lid flaps 6 and 7.

<Flap outside the lid>
In the box sheet, the flaps 6 and 7 outside the lid are formed by the knob part fold lines 20 and 21 formed from the vicinity of the opening edge of the leading edge on the side of the opening start part 14 to the vicinity of the leading edge of the side edge on the opening start part 14 side, There are unsealing fold lines 22 and 23 formed from the vicinity of the base end of the side edge on the unsealing start portion 14 side to the position farther from the unsealing start portion 14 than the center of the leading edge.

  The box formed by assembling the box sheet is bonded to the inner flap 8 with the adhesive G in the region between the knob folding lines 20 and 21 and the unsealing folding lines 22 and 23 of the outer flaps 6 and 7. Is intended to be sealed.

(Knob bending line)
As shown in FIG. 4, the knob folding lines 20, 21 are formed on the outer sides of the box body formed by assembling the box sheet with the corner edge tip corners on the opening start portion 14 side of the outer lid flaps 6, 7 as apexes. A relatively small triangular tab that can be rebounded is defined.

  The knob fold lines 20 and 21 may be any sheet that can easily fold the sheet along the grip line. However, a plurality of cutting lines in which the sheets are arranged in a line in a perforation and a space between the plurality of cutting lines. A so-called lead ruled line having a ruled line formed on the back surface of the sheet so as to be connected is preferable. Thus, by making the knob part folding lines 20 and 21 into lead ruled lines, it becomes easier to flip up the knob part.

  A box formed by assembling the box sheet includes inserting a finger into a recess formed by pushing in the opening start portion 14 and gripping the side edge tip corners of the outer lid flaps 6, 7, The entire knob portion can be gripped by flipping up the knob portion defined by 21. Thus, the knob part flipped up to the outside can be gripped more firmly, and it becomes easier to apply a force for separating the outer lid flaps 6, 7 from the inner lid flaps 8, 9. Therefore, the knob part fold lines 20 and 21 make it easier to open the box formed by assembling the box sheet.

  The knob folding lines 20 and 21 are preferably formed so as to be inclined by about 45 ° with respect to the side edges and the tip edges of the outer lid flaps 6 and 7 so that the knobs can be easily and efficiently gripped.

  The lower limit of the distance between the ends of the knob bending lines 20 and 21 and the corners of the side edge tips of the lid flaps 6 and 7 is preferably 3 cm, and more preferably 4 cm. On the other hand, the upper limit of the distance between the ends of the knob part fold lines 20 and 21 and the corners of the side edge tips of the lid flaps 6 and 7 is preferably 8 cm, more preferably 6 cm. If the distance between the ends of the knob part bending lines 20 and 21 and the corners of the side edge tips of the outer lid flaps 6 and 7 is less than the lower limit, the knob part may be small and cannot be firmly gripped. On the contrary, when the distance between the ends of the knob bending lines 20 and 21 and the corners of the side edge tips of the outer flaps 6 and 7 exceeds the upper limit, the knob is formed on the inner flaps 8 and 9 by the adhesive G. There is a risk that it will be adhered and it will not be easy to flip up the knob.

(Open folding line)
As shown in FIG. 5, the unfolded folding lines 22 and 23 are formed by folding the outer lid flaps 6 and 7 along the unfolded folding lines 22 and 23 to form the first in-lid flap 8 in which the unsealing start portion 14 is formed. It is possible to peel off the lid flaps 6 and 7 from only the lid. In this way, an opening is formed between the first lid flap 8 and the second lid flap 9 by folding the outer lid flaps 6, 7 along the unfolding folding lines 22, 23. And hold the area in the vicinity of the opening and folding lines 22 and 23 between the inner flaps 8 and 9 of the outer lid flaps 6 and 7 and pull the outer lid flaps 6 and 7 from the second inner flap 9. Can be peeled off. In other words, the unfolded folding lines 22 and 23 make it possible to separate the outer lid flaps 6 and 7 from the first inner flap 8 and the second inner lid flap 9 in stages. .

  The unfolded folding lines 22 and 23 may be any sheet that can easily fold the sheet along the line, but connect the plurality of cutting lines arranged in a row in a perforated manner and the plurality of cutting lines. A so-called lead ruled line having a ruled line formed by pushing the back surface of the sheet is preferable. Thus, by using the unfolded folding lines 22 and 23 as lead ruled lines, the stepwise separation of the outer lid flaps 6 and 7 from the first inner flap 8 and the second inner flap 9 becomes more reliable.

  As a lower limit of the distance between the side edge of the lid outer flaps 6 and 7 of the unfolded folding lines 22 and 23 and the upper edge of the long side panels 1 and 2, the average thickness of the sheet forming the box sheet 1 time is preferable, and 2 times is more preferable. On the other hand, the upper limit of the distance between the end of the unfolded flaps 22 and 23 on the side edge side of the outer lid flaps 6 and 7 and the upper edge of the long side surface panels 1 and 2 is preferably 30 mm, more preferably 20 mm. When the distance between the end of the unfolded flaps 22 and 23 on the side edge side of the outer flaps 6 and 7 and the upper edge of the long side panels 1 and 2 is less than the lower limit, the unfolding is performed when the box sheet is assembled. There is a possibility that the lines 22 and 23 may be bent and hinder assembly. On the contrary, when the distance between the side edge of the unfolded folding lines 22 and 23 and the upper edge of the long side panels 1 and 2 exceeds the upper limit, the uncovered flaps 6 and 7 The position where the adhesive G actually adheres from the perpendicular to the unfolded folding lines 22 and 23 from the corners that grip the outer flaps 6 and 7 where the force is most easily transmitted when peeled off from the first lid flap 8 is shown. By being far away, there is a possibility that the outer flaps 6 and 7 cannot be easily peeled off.

  It is preferable that the ends of the unsealed folding lines 22 and 23 on the front edge side of the outer flaps 6 and 7 are in the vicinity of a position overlapping the front edge of the second lid flap 9 in the assembled state. The upper limit of the distance between the end of the unfolded folding lines 22 and 23 on the front edge side of the outer flaps 6 and 7 and the position overlapping the front edge of the second inner flap 9 is preferably 5 cm, and more preferably 2 cm. When the end of the unfolded flaps 22 and 23 on the front edge side of the outer lid flaps 6 and 7 exceeds the upper limit from the position overlapping the front edge of the second lid inner flap 9, the first lid There is a possibility that the opening formed between the inner flap 8 and the second lid inner flap 9 becomes small, and the peeling of the outer lid flaps 6 and 7 from the second lid inner flap 9 cannot be facilitated. Conversely, the end of the unfolded flaps 22 and 23 on the front edge side of the outer flaps 6 and 7 exceeds the upper limit from the position overlapping the front edge of the second lid flap 9, Then, when the outer lid flaps 6 and 7 are peeled off from the first inner flap 8, the adhesive is actually bonded from the perpendicular to the unfolded folding lines 22 and 23 from the corners that grip the outer lid flaps 6 and 7 that are most easily transmitted. When the position where the adhesive G is adhered is far, it may be difficult to peel off the flaps 6 and 7 outside the lid.

  As described above, the box formed by assembling the box sheet can hold the side edge tip corners of the outer lid flaps 6 and 7 by putting a finger into the recess formed by pushing the opening start portion 14. It can be opened relatively easily. In addition, since the opening start portion 14 is covered with the flaps 6 and 7 outside the lid, it is difficult to be unintentionally pushed in during transportation and the like, and the formation of the opening is prevented.

[Other Embodiments]
The said embodiment does not limit the structure of this invention. Therefore, in the above-described embodiment, the components of each part of the above-described embodiment can be omitted, replaced, or added based on the description and common general knowledge of the present specification, and they are all interpreted as belonging to the scope of the present invention. Should.

  In the box sheet, even if the third start part fold line of the opening start part is omitted, it is possible to push in the opening start part if the sheet is strongly pressed. Absent.

  In the box sheet, the knob folding line and the opening folding line may be omitted.

  In the box sheet, the configuration of the bottom may be another configuration such as a one-touch type or an American lock type.

  The said sheet | seat for boxes can be utilized especially suitably for the A-type cardboard box sealed without using an adhesive tape.

DESCRIPTION OF SYMBOLS 1 1st long side surface panel 2 2nd long side surface panel 3 1st short side surface panel 4 2nd short side surface panel 5 Margin 6 First lid outer flap 7 Second lid outer flap 8 First lid inner flap 9 2nd lid flap 10 1st bottom outside flap 11 2nd bottom outside flap 12 1st bottom inside flap 13 2nd bottom flap 14 Opening start part 15 1st start part cutting line 16 2nd starting part cutting line 17 1st Start part fold line 18 Second start part fold line 19 Third start part fold line 20, 21 Knob part fold line 22, 23 Opening fold line G Adhesive

Claims (5)

It is formed from a single sheet and can be assembled to form a box,
A pair of long-side side panels and a pair of short-side side panels connected in a rectangular tube shape in an assembled state;
A pair of outer flaps that extend from the upper edge of the long side panel and the leading edges are butted together in an assembled state;
A box sheet comprising: a pair of inner flaps extending from the upper edge of the short side panel and being superimposed on the inner side of the outer flap in an assembled state;
In the region arranged below the front edge of the outer flap in the assembled state, it is formed across the short side panel and the inner flap, and has an opening start portion that can be pushed into the inside of the box,
The opening start part is
A pair of start section cutting lines formed across the short side panel and the inner flap;
A first start-part fold line formed on the inner flap so as to connect the ends of the pair of start-part cutting lines in parallel to the base edge of the inner flap;
The short side panel is defined by a second start part fold line formed so as to connect between the ends of the pair of start part cutting lines parallel to the upper edge of the short side panel. A box sheet.   The said opening start part further has the 3rd start part fold line parallel to the said 2nd start part fold line between the upper edge of the said short side panel, and the said 2nd start part fold line. Box sheet.   The box sheet according to claim 2, wherein the third start part fold line is a half-cut line obtained by cutting only the back side of the sheet.   The said outer flap has the knob part fold line formed from the said opening start part side edge vicinity of the front-end | tip edge to the front-end | tip vicinity of the side edge by the side of an opening start part. Box sheet.   The said outer flap has an opening fold line formed from the base end vicinity of the side edge by the side of the said opening start part side to the position far from the said opening start part rather than the center of a front-end | tip edge. Item 1. A box sheet according to item 1.

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