JP3203202U - Box sheet - Google Patents

Abstract

A relatively inexpensive box sheet capable of forming a box having a buffer function is provided. A box sheet has a front plate 1, a rear plate 2, and a pair of side plates 3, 4, and is formed from a peripheral wall constituting portion 6 assembled into a square tube shape, and upper edges of the front plate 1 and the rear plate 2. The front lid 7 and the rear lid 8 for sealing the upper end of the cylindrical body formed by the peripheral wall constituting portion 6 by being extended and folded so as to abut each other in the assembled state, and the upper edges of the side plates 3 and 4 And a pair of shock absorber constituting parts 13 and 14 each having flanges 15 and 16, inner wall plates 17 and 18 and stoppers 19 and 20, and extending from the front edge of the front lid 7. A folded piece 21 that is stacked on the inner surface side of the front lid 7 in the assembled state, and extends from the leading edge of the folded piece 21 and is stacked on the inner surface side of the front plate 1 in the assembled state, and a pair of shock absorber components 13; Between 14 inner wall plates 17 and 18 Further comprising a fitting plate 22 to be. [Selection] Figure 1

Description

  The present invention relates to a box sheet.

  As a box (packaging container) formed of sheet material such as corrugated cardboard sheets, an inner wall is arranged with a space inside the side wall, and a buffer that reduces the force applied to the goods to be accommodated by absorbing external shocks. What has a function is used (for example, refer to Unexamined-Japanese-Patent No. 8-310578).

  The packaging container described in the above publication has two pairs of side plate components that form a square cylindrical hollow side plate including a side wall and an inner wall, and the other pair of side plates between the inner walls of one pair of side plate components. A pair of side plate constituent parts is held in a square tube shape by arranging the constituent parts, and the locking holes projecting on both sides of the inner walls of the other pair of side plate constituent parts in the locking holes formed in the side plate constituent parts It is set as the structure which hold | maintains the other pair of side-plate structure part in a square cylinder shape by fitting protrusion.

  The box sheet forming the packaging container described in the above publication has a complicated locking structure as described above, and therefore, it is necessary to die-cut a complicated shape, so that the production speed is limited, and the production per sheet There is a disadvantage that the cost becomes high.

JP-A-8-310578

  In view of the above problems, an object of the present invention is to provide a relatively inexpensive box sheet that can form a box having a buffer function.

  The invention made in order to solve the above problems is a peripheral wall structure that is formed from a single sheet material, can be assembled into a box shape, has a front plate, a rear plate, and a pair of side plates, and is assembled into a rectangular tube shape. And a front lid that seals the upper end of the cylindrical body formed by the peripheral wall constituent part by extending from the upper edge of the front part and the rear plate, and being bent so as to abut each other's leading edge in the assembled state. A rear lid, and a pair of shock absorber components extending from the upper edge of the side plate, the pair of shock absorber components extending from the upper edge of the side plate, and a leading edge of the flange An inner wall plate that is extended and arranged at an interval inside the side plate in the assembled state, and a stopper that is extended from the leading edge of the inner wall plate and is arranged so that the leading edge is close to the side plate in the assembled state. For each box A folded piece that extends from the leading edge of the front lid and is superimposed on the inner surface side of the front lid in the assembled state, and extends from the leading edge of the folded piece and that is in the assembled state on the inner surface side of the front plate And a fitting plate disposed between the inner wall plates of the pair of shock absorber constituting portions.

  The box sheet can maintain the assembled state of the shock absorber component by disposing the fitting plate between the inner wall plates of the pair of shock absorber components extending from the upper edges of the pair of side plates. The box sheet extends from the front edge of the front lid extending from the upper edge of the front plate, and further extends from the front edge of the folded piece stacked on the inner surface side of the front lid in the assembled state. Since the fitting plate is disposed, there are three bent portions between the front plate and the fitting plate, so that the fitting plate is detached from between the shock absorber constituting parts by the elastic force of the sheet material. Power is relatively small. For this reason, when closing the front lid and the rear lid of the box formed by assembling the box sheet, that is, when the product is accommodated in the box, the pair of inner wall plates is elastic of the sheet material of the buffer component. By sandwiching the fitting plate by force, the fitting plate is held inside the front plate, thereby holding the assembled state of the buffer component. Further, in a sealed state in which the front lid and rear lid of the box formed by assembling the box sheet are closed, the base plate edge of the fitting plate is placed on the front plate by folding the folded piece back to the front lid. It arrange | positions in the edge vicinity and the front-end edge of a fitting board is also closely_contact | adhered to the inner surface side of a front board with the elastic force of a sheet | seat material. For this reason, the box formed by assembling the box sheet is to fix the fitting plate to the inner surface side of the front plate by fixing the front lid and the rear lid with an adhesive tape or the like, thereby assembling the buffer component. The state can be maintained. In this way, the box sheet can maintain the assembled state without having a complicated structure such as a protrusion or a hole, so that a complicated punching die is not necessary at the time of production, and the speed of the production line is relatively high. Since it can be enlarged, it can be manufactured at a relatively low cost.

  The leading edge of the rear lid and the leading edge of the stopper are preferably located on the same straight line. As described above, the leading edge of the rear lid and the leading edge of the stopper are positioned on the same straight line, so that the leading edge of the rear lid and the leading edge of the stopper are formed by, for example, a slitter attached to a corrugator that manufactures a cardboard sheet. Since a punching die is not required for forming the rear lid and the buffer component, the speed of the production line can be made relatively higher.

  The extension lengths of the front lid and the pair of flanges may be equal, and the rear lid may have a dummy ruled line that is formed on the same straight line as the leading edges of the pair of flanges. Thus, the extension lengths of the front lid and the pair of flanges are equal, and the rear lid has a dummy ruled line that is formed on the same straight line as the leading edges of the pair of flanges. Since the ruled line that facilitates the folding between the flange and the inner wall plate and the ruled line that facilitates the folding between the flange and the inner wall plate can be formed by, for example, a scorer attached to a corrugator for producing a corrugated cardboard sheet, the manufacturing cost of the box sheet Can be further reduced.

  It is preferable that the rear lid has a dummy ruled line formed on the same straight line as the leading edges of the pair of inner wall plates. In this way, the rear cover has a dummy ruled line formed on the same straight line as the leading edge of the pair of inner wall plates, thereby producing a ruled line that facilitates bending between the inner wall plate and the stopper, for example, a corrugated cardboard sheet. Since it can form with the scorer attached to a corrugator, the manufacturing cost of the said sheet | seat for boxes can further be reduced.

  It is preferable that the fitting plate has a dummy ruled line formed on the same straight line as the leading edge of the pair of inner wall plates. As described above, the fitting plate has a dummy ruled line formed on the same straight line as the front end edges of the pair of inner wall plates. Since the ruled line that facilitates the folding between the inner wall plate and the stopper can be formed by, for example, a scorer attached to a corrugator that manufactures a corrugated cardboard sheet when the inner wall plate is longer than the sum of the extended lengths, the box Sheet manufacturing costs can be reduced more reliably.

  As described above, the box sheet of the present invention can form a box having a buffer function and can be provided at a relatively low cost.

It is a typical back 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 state after sealing the box formed by assembling the sheet | seat for boxes of FIG. It is a typical perspective view which shows the state before sealing the box body which assembled the sheet | seat for boxes of FIG. It is a typical back view which shows the state in the middle of manufacture of the sheet | seat for boxes of FIG.

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

  The box sheet of one embodiment of the present invention shown in FIG. 1 is formed from a single sheet material and can be assembled into a box shape as shown in FIG. In FIG. 1, a thick solid line indicates an edge obtained by cutting the sheet material (a portion that appears as a broken line is a portion obtained by cutting the sheet material in a perforated shape), and a thin solid line is pushed to the back side of the sheet material. The ruled line formed is shown.

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

  When the box sheet is formed from a corrugated cardboard sheet, it is preferable that the ridge line of the core is oriented so as to extend in the vertical direction in a state where the upper and lower sides of the reference characters are correctly arranged.

  The box sheet includes a front plate 1, a rear plate 2, a pair of side plates 3 and 4 (first side plate 3 and second side plate 4), and a joining margin 5, and a peripheral wall constituting unit 6 assembled into a square tube shape. A front lid that extends from the upper edges of the front plate 1 and the rear plate 2 and is bent so as to abut each other's leading edges in the assembled state, thereby sealing the upper end of the cylindrical body formed by the peripheral wall constituting portion 6 7 and the rear lid 8 and the lower edge of the cylinder formed by the peripheral wall constituting portion 6 by being bent from the lower edges of the front plate 1 and the rear plate 2 and bent so as to abut each other in the assembled state. A pair of outer flaps 9, 10 to be sealed, a pair of inner flaps 11, 12 extending from the lower edges of the pair of side plates 3, 4 and folded inside the pair of outer flaps 9, 10 in an assembled state; Extending from the upper edges of the side plates 3 and 4 And a pair of cushion components 13 and 14.

  The pair of shock absorber constituting parts 13 and 14 are extended from the upper edges of the side plates 3 and 4 and the leading edges of the flanges 15 and 16, and are assembled to the side plates 3 and 4. Inner wall plates 17, 18 arranged at intervals on the inside, and stoppers 19, which extend from the leading edge of the inner wall plates 17, 18 and are arranged so that the leading edge is close to the side plates 3, 4 in the assembled state. 20 respectively.

  The box sheet extends from the front edge of the front lid 7 and is folded from the front edge of the front lid 7 in the assembled state, and extends from the front edge of the folded piece 21 in the assembled state. A fitting plate 22 is further provided, which is overlapped on the inner surface side of the front plate 1 and disposed between the inner wall plates 17 and 18 of the pair of shock absorber constituting portions 13 and 14.

  In the box sheet, vertical ruled lines L1a, L1b, L1c, and L1d are formed at the boundaries of the first side plate 3, the front plate 1, the second side plate 4, the rear plate 2, and the joint 5 of the peripheral wall constituting portion 6. Has been. Lower ruled lines L2a, L2b, L2c, and L2d are formed at boundaries between the front plate 1, the rear plate 2, the first side plate 3 and the second side plate 4, and the outer flaps 9 and 10 and the inner flaps 11 and 12. . Upper ruled lines L3a, L3b, L3c, and L3d are formed at boundaries between the front plate 1, the rear plate 2, the first side plate 3 and the second side plate 4, and the front lid 7, the rear lid 8, and the shock absorber constituting portions 13 and 14. Is formed.

  In the shock absorber constituting parts 13 and 14, first shock absorber ruled lines L <b> 4 a and L <b> 4 b are formed at the boundaries between the flanges 15 and 16 and the inner wall plates 17 and 18, and the inner wall plates 17 and 18 and the stoppers 19 and 20 are connected to each other. Second buffer ruled lines L5a and L5b are formed at the boundary.

  A lid ruled line L6 is formed at the boundary between the front lid 7 and the folded piece 21. At the boundary between the folded piece 21 and the fitting plate 22, a reverse fold ruled line L <b> 7 composed of a so-called lead ruled line having a perforation obtained by intermittently cutting the sheet material and a ruled line connecting between the cut lines of the perforation is formed. ing. Further, the box sheet is formed with a first dummy ruled line L8 parallel to the base end edge (reverse folding ruled line L7) on the fitting plate 22, and the rear lid 8 parallel to the base end edge (upper ruled line L3b). A second dummy ruled line L9 and a third dummy ruled line L10 are formed. The “dummy ruled line” is a ruled line that is not bent when the box sheet is used.

  The peripheral wall constituting portion 6 includes the first side plate 3, the front plate 1, the second side plate 4, the rear plate 2 and the joining margin 5 in this order in the left-right direction (the left-right direction in the state where the upper and lower sides of the reference characters are correctly arranged) Is formed. The peripheral wall constituting portion 6 is connected in an endless manner by fixing the joining margin 5 to the back surface of the side end portion of the first side plate 3 opposite to the front plate 1. The joining of the joint margin 5 to the first side plate 3 is performed by first folding the rear plate 2 on the back side of the second side plate 4 and applying glue on the surface of the next margin 5, and then the back side of the front plate 1. The first side plate 3 is folded back to overlap the end of the first side plate 3 on the surface of the joint 5.

  The box sheet is usually in a state where the joint 5 is adhered to the first side plate 3 in this manner, that is, without bending between the front plate 1 and the second side plate 4, the front plate 1 and the second side plate 4. The back plate 2 and the first side plate 3 are provided to the user in a folded state on the back side.

  In assembling the box sheet, first, the peripheral wall constituting portion 6 is formed in a rectangular tube shape so that the front plate 1 and the rear plate 2 face each other, and the first side plate 3 and the second side plate 4 face each other. Subsequently, the inner flaps 11, 12 are bent 90 ° to the back surface side (inside the peripheral wall constituting portion 6) with respect to the side plates 3, 4, and the outer flaps 9, 10 are folded on the surface side of the inner flaps 11, 12. By this, the bottom part which seals opening of the lower end of the square cylindrical body which the surrounding wall structure part 6 forms is formed.

  After the formation of the bottom portion, the shock absorber constituting portions 13 and 14 are folded into a “U” shape in a sectional view, thereby forming a shock absorber that forms a space in the inside of the side plates 3 and 4. Specifically, the stoppers 19 and 20 are bent 90 ° to the back side with respect to the inner wall plates 17 and 18, the inner wall plates 17 and 18 are bent 90 ° to the back side with respect to the flanges 15 and 16, and the flanges 15 and 16 are further bent. Is bent 90 ° toward the back surface side (inside the peripheral wall constituting portion 6) with respect to the side plates 3 and 4, thereby forming a buffer body inside the side plates 3 and 4. That is, in the assembled state, the shock absorber constituting parts 13 and 14 are spaced apart from the side plates 3 and 4 on the back side of the side plates 3 and 4 (the inner surface side of the box formed by assembling the box sheet). The stoppers 19 and 20 are arranged on the back side (inner side of the box) of the inner flaps 11 and 12 so that the leading edges thereof are close to the vicinity of the back side of the side plates 3 and 4.

  In the state where the box formed by assembling the box sheet is sealed, the front lid 7 and the rear lid 8 are abutted against each other as shown in FIG. For this reason, the sum of the vertical extension length of the front lid 7 and the vertical extension length of the rear lid 8 is substantially equal to the horizontal length of the side plates 3 and 4.

  When the box formed by assembling the box sheet is sealed, the folded piece 21 is disposed between the front edges of the flanges 15 and 16 of the pair of shock absorber constituting parts 13 and 14. For this reason, the folded piece 21 has a constant width in the left-right direction (the direction perpendicular to the vertical direction of the character of FIG. 1) from the leading edge of the central region excluding both ends overlapping the flanges 15 and 16 of the front lid 7. Extend. Further, the fitting plate 22 preferably extends from the folded piece 21 with a constant width equal to the folded piece 21 in the left-right direction.

  When an article is accommodated between the pair of inner wall plates 17 and 18 of the box formed by assembling the box sheet, the shock absorber formed from the pair of shock absorber constituting parts 13 and 14 is from the outside of the box. The impact applied to the side plates 3 and 4 is alleviated to reduce the force acting on the goods housed inside. Further, the box formed by assembling the box sheet is an internal space of the shock absorber formed by the shock absorber constituting parts 13, 14, that is, another item between the side plates 3, 4 and the inner wall plates 17, 18. For example, an accessory of an item accommodated between the pair of inner wall plates 17 and 18 can be accommodated.

  In the box sheet, the first buffer ruled lines L4a and L4b, the lid ruled line L6, and the second dummy ruled line L9 are preferably formed on the same straight line as in the present embodiment. In other words, the extension length of the front lid 7 and the extension lengths of the flanges 15 and 16 are equal to each other, and the distance from the base edge of the rear lid 8 to the second dummy ruled line is the distance between the front lid 7 and the flanges 15 and 16. It is preferable to be equal to the extension length. Thus, for example, a lower ruled line L2a, L2b, L2c, L2d and upper ruled lines L3a, L3b, L3c, L3d are attached to a corrugator that forms a corrugated cardboard sheet, and a scorer that forms a ruled line in the longitudinal direction of the long cardboard sheet At the same time, the first buffer ruled lines L4a and L4b and the lid ruled line L6 can be formed relatively easily. That is, the second dummy ruled line L9 is inevitably formed between the first buffer ruled lines L4a and L4b and the cover ruled line L6 when the first buffer ruled lines L4a and L4b and the cover ruled line L6 are continuously formed. It can be formed as a ruled line. Therefore, it is preferable that the second dummy ruled line L9 is not formed when the first buffer ruled lines L4a and L4b and the cover ruled line L6 are manufactured using a punching die for embossing the box sheet one by one.

  The first dummy ruled line L8 and the third dummy ruled line L10 are preferably formed on the same straight line as the second buffer ruled lines L5a and L5b. Thus, for example, a lower ruled line L2a, L2b, L2c, L2d and upper ruled lines L3a, L3b, L3c, L3d are attached to a corrugator that forms a corrugated cardboard sheet, and a scorer that forms a ruled line in the longitudinal direction of the long cardboard sheet At the same time, the second buffer ruled lines L5a and L5b can be formed relatively easily. That is, the first dummy ruled line L8 and the third dummy ruled line L10 are inevitably formed between the second buffer ruled lines L5a and L5b when the second buffer ruled lines L5a and L5b are continuously formed. Can be formed. Therefore, it is preferable that the first dummy ruled line L8 and the third dummy ruled line L10 are not formed when the second buffer ruled lines L5a and L5b are manufactured by using a punching die that presses each box sheet. .

  In the box sheet, the leading edges of the stoppers 19 and 20 are preferably formed on the same straight line as the leading edge of the rear lid 8. In other words, it is preferable that the extension length of the rear lid 8 and the extension length of the buffer body constituting portions 13 and 14 are equal. Thereby, the leading edge of the rear lid 8 and the leading edges of the stoppers 19 and 20 are attached to, for example, a corrugator that forms a corrugated cardboard sheet, and it is relatively easy to use a slitter or the like that cuts a long corrugated cardboard sheet to a desired width. Can be formed.

  The box sheet is assembled between the fitting plate 22 and the front plate 1 in a state before being sealed after being assembled into a box shape as shown in FIG. Since there are three easy-folding ruled lines, upper ruled line L3a, lid ruled line L6, and reverse folded ruled line L7, the elastic force of the sheet material is relaxed, and it is fitted so as to be detached from the pair of inner wall plates 17 and 18. The force acting on the plywood 22 is relatively small. For this reason, when an article is accommodated in a box formed by assembling the box sheet, the inner wall plates 17 and 18 sandwich the fitting plate 22 by the elastic force of the pair of shock absorber constituting portions 13 and 14, and the fitting plate is caused by frictional force. 22 can be temporarily held. For this reason, the operation | work which accommodates an article in the state in the state which assembled the said sheet | seat for boxes is comparatively easy.

  In the box sheet, the folded piece 21 is folded toward the surface side of the sheet material with respect to the fitting plate 22, and the reverse folding ruled line L 7 formed for this folding is pushed to the surface side of the sheet material. It is also possible to use reverse ruled lines formed as described above. However, by using the lead ruled lines having perforations as in the present embodiment, the manufacturing process is not complicated because it is only necessary to process from the front surface side of the sheet material and not push the back surface.

  In the sealed state in which the front lid 7 and the rear lid 8 of the box formed by assembling the box sheet are closed, the base edge of the fitting plate 22 is obtained by folding the folded piece 21 back to the back surface of the front lid 7. (Reverse folding ruled line L6) is arranged in the vicinity of the upper edge of the front plate 1, and the leading edge of the fitting plate 22 is brought into close contact with the inner surface side of the front plate 1 by the elastic force of the sheet material of the reverse folding ruled line L6. For this reason, the box formed by assembling the box sheet fixes the fitting plate 22 along the inner surface of the front plate 1 by fixing the front lid 7 and the rear lid 8 with an adhesive tape or the like, thereby buffering. The assembled state of the body components 13 and 14 can be continuously maintained.

  As a minimum of the extension length of fitting board 22, 50% of the height of front board 1 is preferred and 60% is more preferred. On the other hand, the upper limit of the extension length of the fitting plate 22 is preferably 90% of the height of the front plate 1 and more preferably 80%. When the extension length of the fitting plate 22 is less than the lower limit, the contact length between the pair of inner wall plates 17 and 18 is insufficient, and it is uncertain that the assembled state of the shock absorber components 13 and 14 is maintained. There is a risk. On the contrary, when the extension length of the fitting plate 22 exceeds the above upper limit, it is necessary to fold the folded piece 21 so that the folded piece 21 comes into close contact with the back surface of the front lid 7, and thus the reaction force of the sheet material when closing the front lid 7. There is a possibility that sealing will not be easy due to the increase of.

<Manufacturing method>
The box sheet includes a step of forming a plurality of score ruled lines on a long sheet material, a step of cutting the long sheet material into a predetermined width, and a step of forming a crease ruled line on the long sheet material; , A step of cutting a long sheet material into a predetermined length, a step of forming a slot in the sheet material, a step of cutting the end portion of the sheet material so as to form a margin 5, the folding piece 21 and the fitting And a step of punching the sheet material so as to form the plywood 22.

(Score ruled line formation process)
In the score ruled line forming step, using a scorer, a continuous score ruled line including lower ruled lines L2a, L2b, L2c, and L2d and a continuous score including upper ruled lines L3a, L3b, L3c, and L3d on a long sheet material. Continuing score ruled lines including ruled lines, first buffer ruled lines L4a and L4b, lid ruled lines L6 and second dummy ruled lines L9, including second buffer ruled lines L5a and L5b, first dummy ruled lines L8 and third dummy ruled lines L10 A continuous score ruled line is formed.

(Width cutting process)
In the width cutting step, for example, using a slitter, the leading edge of the rear lid 8 and the leading edge of the buffer body constituting portions 13 and 14, the leading edge of the outer flaps 9 and 10, and the leading edge of the inner flaps 11 and 12 are used. A long sheet material is cut to have a width equal to the interval.

(Length cutting process)
In the length cutting step, a long sheet material is cut into a certain length.

(Crease ruled line forming process)
In the crease ruled line forming step, vertical ruled lines L1a, L1b, L1c, and L1d are formed using, for example, a creaser.

(Slot formation process)
In the slot forming step, for example, a slotter is used to form a slot that separates between the outer flaps 9 and 10 and the inner flaps 11 and 12 and between the front lid 7, the rear lid 8, and the buffer component parts 13 and 14. .

(Resection process)
In the cutting process, one end side of the sheet material in the longitudinal direction (left and right direction in the box sheet) is cut along the side edge of the rear lid 8, the side edge and the leading edge of the joint 5, and the side edge of the outer flap 10. To do. In this state, as shown in FIG. 4, the sheet material has the same shape as a so-called A-type box sheet. That is, until this state, it is widely spread and can be molded using a production line for A-type boxes having a high production capacity.

(Die cutting process)
In the die cutting process, both ends of the front edge of the front lid 7, both side edges of the folded piece 21, and both side edges and front edges of the fitting plate 22 are formed using the die, and the reverse folding ruled line L 7 is perforated. A plurality of cuts and a ruled line connecting the plurality of cuts are formed.

  As described above, the box sheet can be manufactured at a relatively low cost because the A-box box production line is simply subjected to a die-cutting process using a die having a relatively simple shape. . In addition, each said manufacturing process may perform a some process simultaneously, and may change the order. Specifically, it is possible to use a device that simultaneously performs a score ruled line forming step and a width cutting step, and a device that simultaneously performs a crease ruled line forming step and a slot forming step, which are widely used as manufacturing equipment for cardboard box sheets. it can. Moreover, you may perform a cutting process and a die-cutting process using one punching die.

<Advantages>
As described above, the box sheet has the folded piece 21 and the fitting plate 22 that are continuously provided from the front end edge of the front lid 7, and the fitting plate 22 is used to assemble the pair of buffer component parts 13 and 14. Therefore, complicated structures such as protrusions and holes are not required, and the production line speed can be made relatively large and can be produced relatively inexpensively.

[Other Embodiments]
The said embodiment does not limit the structure of this invention. Therefore, in the above-described embodiment, 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, dummy ruled lines may be omitted or added. In the box sheet, the rear lid and the leading edge of the stopper may not be on the same line. That is, the extension length from the peripheral wall constituent part of the rear lid and the extension length from the peripheral wall constituent part of the buffer body forming part may be different. Further, the extension length of the front lid and the extension length of the flange may be different.

  The box sheet of the present invention can be particularly suitably used as a packaging box for shipping products.

DESCRIPTION OF SYMBOLS 1 Front plate 2 Rear plate 3, 4 Side plate 5 Joint 6 Peripheral wall structure part 7 Front cover 8 Rear cover 9, 10 Outer flap 11, 12 Inner flap 13, 14 Buffer body structure part 15, 16 Flange 17, 18 Inner wall board 19 , 20 Stopper 21 Folding piece 22 Fitting plates L1a, L1b, L1c, L1d Vertical ruled lines L2a, L2b, L2c, L2d Lower ruled lines L3a, L3b, L3c, L3d Upper ruled lines L4a, L4b First buffer ruled lines L5a, L5b Second buffer Body ruled line L6 Lid ruled line L7 Reverse fold ruled line L8 First dummy ruled line L9 Second dummy ruled line L10 Third dummy ruled line

Claims (5)

It is formed from a single sheet material and can be assembled into a box shape.
A front wall, a rear panel, and a pair of side plates, and a peripheral wall component that is assembled into a square cylinder,
A front lid and a rear lid that extend from the upper edges of the front plate and the rear plate, respectively, and are folded so as to abut each other's leading edges in an assembled state, thereby sealing the upper end of the cylindrical body formed by the peripheral wall constituting portion; ,
A pair of shock absorber components extending from the upper edge of the side plate,
A pair of shock absorber components extending from the upper edge of the side plate, an inner wall plate extending from the leading edge of the flange, and being spaced apart from the inner side of the side plate in the assembled state, and the inner wall A box sheet having a stopper extending from the leading edge of the plate and arranged so that the leading edge is close to the side plate in the assembled state,
A folded piece extending from the front edge of the front lid and overlaid on the inner surface side of the front lid in an assembled state;
A box that extends from the leading edge of the folded piece and is superimposed on the inner surface side of the front plate in an assembled state and is disposed between the inner wall plates of the pair of shock absorber components. Sheet.   The box sheet according to claim 1, wherein a leading edge of the rear lid and a leading edge of the stopper are located on the same straight line. The extension lengths of the front lid and the pair of flanges are equal,
The box seat according to claim 1 or 2, wherein the rear lid has a dummy ruled line formed on the same straight line as the leading edges of the pair of flanges.   The box seat according to claim 1, 2 or 3, wherein the rear lid has a dummy ruled line formed on the same straight line as the front edge of the pair of inner wall plates.   The box sheet according to claim 4, wherein the fitting plate has a dummy ruled line formed on the same straight line as a front edge of the pair of inner wall plates.

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