JP3217142U - Box sheet - Google Patents

Abstract

The present invention provides a box sheet that can be assembled into a box body excellent in visibility and take-out property of articles. A box sheet includes a pair of long surface panels 1, 2 and a pair of width surface panels 3, 4 which are alternately connected in the left-right direction and assembled into a rectangular tube shape, and a pair of long surface panels 1, 2 is provided with a pair of upper outer flaps 5 and 6 extending from the upper edges of the two and a pair of upper inner flaps 7 and 8 extending from the upper edges of the pair of width surface panels 3 and 4 and can be assembled in a box shape. A first opening forming portion 14 is formed in one long surface panel 2 and one upper outer flap 6 extending from the upper edge of the long surface panel 2, and is one width surface panel 3. The first opening forming portion 15 is formed in the first opening forming portion 14, and the first opening forming portion 14 protrudes downward with the boundary line between the one long surface panel 2 and the one upper outer flap 6 as both ends. And connected to both ends of the first easy-to-break line 16 and the tip side of one upper outer flap 6 And a convex second break easily line 17, the second opening forming portion 15 has a third break easily line 19 of the annular. [Selection] Figure 1

Description

  The present invention relates to a box sheet.

  Boxes assembled from cardboard sheets or the like are widely used for storing and transporting articles. Some of these boxes are used as storage containers for goods in stores after being used for storage and transportation of goods. Usually, a box used as a container for displaying an article is configured such that a sufficiently large opening can be formed so that the article accommodated therein can be viewed from the outside and the article can be easily taken out.

  As a box capable of forming such an opening for taking out articles, for example, a “packaging box with improved visibility at the time of display” (see JP 2005-170474 A) has been proposed. This packaging box has a pair of long side plates and a pair of short side plates that face each other, and has a cut tape that crosses these four side plates in the left-right direction. In this packaging box, three long cut lines (a central cut line and a pair of side cut lines arranged on the left and right sides of the central cut line) are formed on each long side plate.

  The packaging box is capable of forming an opening for taking out articles on the long side plate by peeling off the cut tape and breaking any two cut lines among the center cut line and the pair of side cut lines. It is configured.

JP 2005-170474 A

  The packaging box described in the above publication can adjust the size and position of the opening by selecting the cut line to be broken. However, according to this packaging box, since it is necessary to visually recognize and take out the article from the long side plate side, it is necessary to arrange in the store so that the long side plate faces the front direction (the direction facing the customer).

  However, the preferred arrangement of the packaging boxes depends on store preferences and store space. Therefore, the packaging box described in the above publication may be difficult to handle at some stores. Moreover, as for the packaging box used for goods display, although the adjacent long side board and short side board may be arrange | positioned so that a passage may be faced, depending on the packaging box of the said gazette, a user is a long side board side. This is inconvenient because it can only visually recognize and take out the article.

  This invention is made | formed in view of such a problem, and makes it a subject to provide the sheet | seat for boxes which can be assembled in the box body which is excellent in the visibility and the taking-out property of articles | goods.

  A box sheet according to the present invention, which has been made to solve the above problems, includes a pair of long surface panels and a pair of width surface panels that are alternately connected in the left-right direction and assembled into a rectangular tube shape, and the pair of lengths. A box sheet comprising a pair of upper outer flaps extending from the upper edge of the face panel and a pair of upper inner flaps extending from the upper edge of the pair of width face panels, which can be assembled into a box shape, A first opening forming portion is formed in one of the long face panels and one of the upper outer flaps extending from the upper edge of the long face panel, and a second opening forming portion is formed in the one of the width face panels. The first opening forming portion is connected to the first easy-to-break line projecting downward with the boundary line between the one length surface panel and the one upper outer flap as both ends, and to both ends of the first easy-to-break line. On the tip side of the one upper outer flap Second and a readily breakable line such that the second opening forming portion has a third break easily wire ring.

  The box sheet includes a first opening forming portion formed in one long surface panel and one upper outer flap extending from an upper edge of the long surface panel, and a first width surface panel. Since the two opening forming portions are provided, the article can be visually recognized and taken out from either the one long surface panel or the one wide surface panel in the assembled state. Furthermore, since the said 1st opening formation part is formed over said one length surface panel and one upper outer flap, the said sheet | seat for boxes can also visually recognize and take out articles | goods from upper direction in an assembly state. . Therefore, the box formed by assembling the box sheet is excellent in visibility and take-out property of the article.

  The third easy-to-break line extends in the vertical direction, and a pair of vertical portions arranged in parallel in the left-right direction, and a pair of horizontal portions extended in the left-right direction and arranged in parallel in the vertical direction And a quadrangular annular shape having four connecting portions that connect the adjacent ends of the vertical portion and the horizontal portion, and the second opening forming portion is A pair of fourth easy-to-break lines further configured to break between the vertical portion and the one width panel and the upper end of the boundary line between the pair of length panels adjacent to the width panel in the assembled state are further provided. Good. According to this configuration, by breaking the third easy break line, it is possible to form a substantially square annular opening in the one width panel. In addition, according to this configuration, by removing the opening in the one width surface panel and the upper region of the pair of fourth breakable lines together with the one upper inner flap, in addition to the above-described substantially square annular opening, A relatively large opening reaching the upper edge of the width panel can be formed in the one width panel. Therefore, the opening can be selected according to the location of the box, the remaining amount of articles accommodated in the box, and the like, and the usability can be improved.

  The third easy-to-break line is a perforation having a plurality of cutting lines arranged at intervals, and the interval between the cutting lines of the four connection parts is the pair of vertical parts and the pair of horizontal parts. It is better to be smaller than the interval between the cutting lines. Thus, the third easy break line is a perforation having a plurality of cutting lines arranged at intervals, and the interval between the cutting lines of the four connection portions is the pair of vertical portions and By being smaller than the interval between the cutting lines of the pair of horizontal portions, the third easy break line can be easily and reliably broken along the four connecting portions.

  The first opening forming portion may further include a rupture starting tongue piece formed on the one upper outer flap and adjacent to the second easy break line. As described above, the first opening forming portion is formed on the one upper outer flap, and further includes a tongue piece for starting breakage adjacent to the second breakable line, thereby forming the first tongue portion by bending the tongue piece. The first easy-to-break line and the second easy-to-break line can be easily and reliably broken from the second easy-to-break line side by putting a finger in the opening to be opened and putting the finger on the edge of the opening and pulling it out. .

  A notch corresponding to the second easy break line may be formed in the pair of upper inner flaps. Thus, by forming a notch corresponding to the second easy-to-break line in the pair of upper inner flaps, the opening formed by the first opening forming portion can be enlarged. The articles accommodated in the box can be easily taken out of the box.

  In the present invention, the “left-right direction” means the horizontal direction in the assumed general usage of a box formed by assembling box sheets, and “upper” and “lower” are assumed. Although it means up and down in a general usage mode, it is not intended to limit the direction of use of the box. The term “annular” refers to an endlessly connected state, and includes an annular shape, an elliptical shape, a polygonal shape, and other closed shapes.

  As described above, the box sheet according to the present invention can be assembled into a box body that is excellent in visibility and take-out property of an article.

It is a typical top view showing the sheet for boxes concerning one embodiment of the present invention. It is a typical perspective view which shows the box formed by assembling the sheet | seat for boxes of FIG. It is a typical perspective view which shows the opening formation state of the box of FIG. It is a typical perspective view which shows the opening formation state different from FIG. 3 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]
The box sheet in FIG. 1 is composed of one sheet. The box sheet is alternately connected in the left-right direction, and is assembled into a rectangular tube shape. The pair of long face panels (first length face panel 1 and second length face panel 2) and the pair of width face panels (first A first width panel 3 and a second width panel 4) and a pair of upper outer flaps (first upper outer flaps 5 and 2) extending from the upper edges of the first length surface panel 1 and the second length surface panel 2. The upper outer flap 6) and a pair of upper inner flaps (first upper inner flap 7 and second upper inner flap 8) extending from the upper edges of the first width panel 3 and the second width panel 4 are provided. As shown in FIG. 2, the box sheet is assembled into a box body 21 of an A type (citrus box type). The first length surface panel 1, the first width surface panel 3, the second length surface panel 2, and the second width surface panel 4 are connected in this order from one side in the left-right direction to the other side in the left-right direction. Further, the box sheet includes a pair of lower outer flaps (first lower outer flap 9 and second lower outer side) that extend from the lower edges of the first length surface panel 1 and the second length surface panel 2. Flap 10), a pair of lower inner flaps (first lower inner flap 11 and second lower inner flap 12) extending from the lower edges of the first width panel 3 and the second width panel 4, and a first A paste margin portion 13 is provided that extends from an end edge of the long surface panel 1 opposite to the connection side with the first width surface panel 3 and is adhered to the inner surface of the second width surface panel 4.

  The pair of lower outer flaps 9, 10 and the pair of lower inner flaps 11, 12 are squares of the first length surface panel 1, the first width surface panel 3, the second length surface panel 2, and the second width surface panel 4. In a state assembled in a cylindrical shape, the pair of lower inner flaps 11 and 12 are bent inward, and the pair of lower outer flaps 9 and 10 are further bent inward so that the tips are abutted with each other. The bottom of the body 21 is formed. The pair of upper outer flaps 5 and 6 and the pair of upper inner flaps 7 and 8 include, for example, a pair of long surface panels 1 and 2, a pair of width surface panels 3 and 4, and an internal space surrounded by the bottom portion. In the accommodated state, the pair of upper inner flaps 7, 8 are folded inward, and the pair of upper outer flaps 5, 6 are folded inward so that the tips are abutted with each other. Form. For example, a sealing tape X is adhered to the butted portions of the pair of upper outer flaps 5 and 6 and the butted portions of the pair of lower outer flaps 9 and 10. Further, the adhesive margin 13 can be attached to the second width surface panel 4 using, for example, an adhesive, a stapler, or the like. In FIG. 1, a thick solid line indicates a cutting line formed by cutting the sheet, and a thin solid line indicates a ruled line formed by pushing the inner surface of the sheet.

  The sheet used for the box sheet is not particularly limited as long as it has sufficient strength to maintain the shape of the box 21 formed by assembling the box sheet. For example, paper such as corrugated cardboard or cardboard Examples thereof include a sheet made of synthetic resin, a sheet made of synthetic resin, and a laminated sheet of a paper sheet and a synthetic resin sheet. Among them, a paper sheet is preferable from the viewpoint of processability, impact absorbability, handleability, recyclability, economy, and the like, and a cardboard sheet is particularly preferable. The corrugated cardboard forming the box sheet is obtained by bonding a core formed of a base paper into a corrugated shape to a liner, for example, a single side in which the core formed in a corrugated shape is bonded to a single liner Corrugated cardboard sheet, double-sided cardboard sheet with a liner attached to the top of a single-sided cardboard sheet, double-sided cardboard sheet with a single-sided cardboard sheet laminated with one-sided cardboard sheet, single-sided cardboard on one side of a double-sided cardboard sheet A double-sided corrugated cardboard sheet in which the tops of the sheets are further bonded together can be used. Among these, double-sided cardboard sheets are preferable from the viewpoint of processability, economy, durability, and the like.

  The first length surface panel 1 and the second length surface panel 2 are formed in a rectangular shape and substantially the same shape. The first width panel 3 and the second width panel 4 are formed in a rectangular shape and substantially the same shape. The lengths in the left-right direction of the first length surface panel 1 and the second length surface panel 2 are larger than the lengths in the left-right direction of the first width surface panel 3 and the second width surface panel 4. In addition, the vertical lengths of the first length surface panel 1, the second length surface panel 2, the first width surface panel 3, and the second width surface panel 4 are substantially equal. The length in the left-right direction of the first length surface panel 1 and the second length surface panel 2 can be set as appropriate based on the size of the article accommodated in the box 21, for example, 30 cm or more and 80 cm or less. It can be. The lengths in the left-right direction of the first width panel 3 and the second width panel 4 can be set as appropriate based on the size of the articles accommodated in the box 21, and may be set to 20 cm or more and 60 cm or less, for example. it can. The vertical lengths of the first length surface panel 1, the second length surface panel 2, the first width surface panel 3, and the second width surface panel 4 are based on the size of the articles accommodated in the box body 21. Although it can set suitably, it can be 20 cm or more and 60 cm or less, for example.

(Opening part)
The second upper surface flap 2 extending from the upper edge of the second length surface panel 2 and the second length surface panel 2 has a first opening straddling the second length surface panel 2 and the second upper outer flap 6. A forming portion 14 is formed. A second opening forming portion 15 is formed in the first width surface panel 3. As shown in FIGS. 3 and 4, the first opening forming portion 14 is configured to be able to form a first opening P that can visually recognize and take out an article accommodated in the box body 21. Moreover, the 2nd opening formation part 15 forms the 3rd opening R of FIG. 4 larger than the 2nd opening Q of FIG. 3 which can visually recognize and take out the articles accommodated in the box 21, and the 2nd opening Q. Configured to be possible. The second opening Q and the third opening R are selectively formed according to the size, remaining amount, etc. of the articles accommodated in the box body 21. Further, the first opening P and the second opening Q or the third opening R may be formed at the same time, or only one of them may be formed.

<First opening forming part>
The first opening forming portion 14 includes a first breakable line 16 that protrudes downward with the boundary line between the second length surface panel 2 and the second upper outer flap 6 as both ends, and both ends of the first breakable line 16. It has the 2nd easy break line 17 which is connected and protrudes in the front end side of the 2nd upper outside flap 6. As shown in FIG. The first easy break line 16 is formed on the second length surface panel 2, and the second easy break line 17 is formed on the second upper outer flap 6.

  The first easy-to-break line 16 extends in the vertical direction and is positioned below the pair of vertical portions 16a arranged in parallel in the left-right direction and the lower ends of the pair of vertical portions 16a, and the pair of vertical portions 16a. A horizontal portion 16b extending in the left-right direction, and a pair of connecting portions 16c that are formed in an outwardly protruding arc shape and connect adjacent ends of the pair of vertical portions 16a and the horizontal portion 16b. The pair of vertical portions 16a and horizontal portions 16b are linear. The distance between the pair of vertical portions 16a can be set to, for example, 20 cm or more and 60 cm or less so that an article accommodated in the box body 21 can be easily taken out while suppressing a decrease in strength of the box body 21. The distance between the upper edge of the second length surface panel 2 and the horizontal portion 16b is, for example, 15 cm so that an article accommodated in the box body 21 can be easily taken out while suppressing a decrease in strength of the box body 21. It can be 40 cm or less.

  The first easy break line 16 is a perforation having a plurality of cutting lines arranged at intervals. The interval between the cutting lines of the pair of connection portions 16c is preferably smaller than the interval between the cutting lines of the pair of vertical portions 16a and the horizontal portion 16b. The box sheet has the first breakable line 16 connected to the pair of connecting portions by the interval between the cutting lines of the pair of connecting portions 16c being smaller than the interval between the cutting lines of the pair of vertical portions 16a and the horizontal portion 16b. 16c easily and reliably breaks. Further, the box sheet has a pair of vertical portions 16a and a horizontal portion 16b because the distance between the cutting lines of the pair of vertical portions 16a and the horizontal portion 16b is larger than the interval between the cutting lines of the pair of connection portions 16c. It is easy to prevent the strength of the box 21 from being lowered.

  The lower limit of the distance between the cutting lines of the pair of vertical portions 16a and horizontal portions 16b is preferably 3 mm, and more preferably 4 mm. On the other hand, the upper limit of the interval is preferably 8 mm, and more preferably 6 mm. If the interval is less than the lower limit, the pair of vertical portions 16a and horizontal portions 16b may be unintentionally broken. On the other hand, if the distance exceeds the upper limit, the pair of vertical portions 16a and horizontal portions 16b may not be easily broken. In addition, as length of each cutting line of a pair of vertical part 16a and horizontal part 16b, for example, about 0.7 times or more and 1.3 times or less of an interval between a cutting line of a pair of vertical part 16a and horizontal part 16b can do.

  The lower limit of the distance between the cutting lines of the pair of connection portions 16c is preferably 1.0 mm, and more preferably 1.5 mm. On the other hand, the upper limit of the interval is preferably 3.5 mm, and more preferably 3.0 mm. If the said space | interval is less than the said minimum, a possibility that a pair of connection part 16c may fracture | rupture unintentionally will become high. On the other hand, if the distance exceeds the upper limit, the pair of connecting portions 16c may be easily and reliably not easily broken. In addition, as length of each cutting line of a pair of connection part 16c, it can be 0.7 times or more and about 1.3 times or less of the space | interval between the cutting lines of a pair of connection part 16c, for example.

  As a minimum of a curvature radius of a pair of connection parts 16c, 4 cm is preferred and 6 cm is more preferred. On the other hand, the upper limit of the radius of curvature is preferably 10 cm, and more preferably 8 cm. If the radius of curvature is less than the lower limit, the pair of connecting portions 16c may be easily and reliably not easily broken. On the contrary, if the radius of curvature exceeds the upper limit, the opening area of the first opening P becomes unnecessarily small, and it may be difficult to take out the article accommodated in the box 21.

  The second easy break line 17 has, for example, an arch shape. The second easy break line 17 is a perforation having a plurality of cutting lines arranged at intervals. As a minimum of the interval between the cutting lines of the 2nd easy break line 17, 3 mm is preferred and 4 mm is more preferred. On the other hand, the upper limit of the interval is preferably 8 mm, and more preferably 6 mm. If the interval is less than the lower limit, the second easy break line 17 may be unintentionally broken. On the contrary, when the said space | interval exceeds the said upper limit, there exists a possibility that the fracture | rupture of the 2nd easy breakable line 17 may become easy. In addition, as the length of each cutting line of the 2nd easy breakable line 17, it can be 0.7 times or more and 1.3 times or less of the space | interval between the cutting lines of the 2nd easy breakable line 17, for example.

  The first opening forming portion 14 is formed in the second upper outer flap 6 and has a rupture start tongue piece 18 adjacent to the second easy break line 17. One end of the second upper outer flap 6 is connected to the second easy-to-break line 17, and a pair of parallel tongue piece forming cutting lines 18a extending from the one end to the distal end side of the second upper outer flap 6 are provided. The cut line 17a of the second easy break line 17 connects the pair of tongue piece forming cut lines 18a, and the cut line 17a of the pair of tongue piece forming cut lines 18a and the second easy break line 17 The enclosed area forms the tongue piece 18. The tongue piece 18 is formed at the center in the left-right direction of the second upper outer flap 6. Since the first opening forming portion 14 has the tongue piece 18, the box sheet has a finger inserted into the opening formed by bending the tongue piece 18, and the finger is drawn out by pulling the edge of the opening. The first easy break line 16 and the second easy break line 17 can be easily and reliably broken from the second easy break line 17 side. In addition, in the 2nd breakable line 17, the cutting line 17a which connects a pair of cutting piece 18a for tongue piece formation may be formed longer than another cutting line.

  In the box sheet, notches 7 a and 8 a corresponding to the second easy break line 17 are formed in the first upper inner flap 7 and the second upper inner flap 8. As a result, a first opening P corresponding to a broken piece removed by breaking the first easy break line 16 and the second easy break line 17 is formed in the box body 21. As a result, the box sheet can easily take out an article accommodated in the box body 21 from the first opening P by sufficiently increasing the opening area of the first opening P.

<Second opening forming part>
The second opening forming part 15 has an annular third easy-to-break line 19. The third easy-to-break line 19 extends in the up-down direction and a pair of vertical portions 19a disposed in parallel in the left-right direction, and a pair of horizontal portions extending in the left-right direction and disposed in parallel in the up-down direction. It has a part 19b and four connection parts 19c that are formed in an arc shape protruding outward and connect adjacent ends of the vertical part 19a and the horizontal part 19b. The 2nd opening formation part 15 is a substantially square cyclic | annular form, and is a shape where the rectangular corner | angular part was rounded by the four connection parts 19c in detail. The pair of vertical portions 19a and the pair of horizontal portions 19b are linear. The distance between the pair of vertical portions 19a can be set to, for example, 10 cm or more and 40 cm or less so that an article accommodated in the box body 21 can be easily taken out while suppressing a decrease in strength of the box body 21. The distance between the pair of horizontal portions 19b can be set to, for example, 10 cm or more and 40 cm or less so that an article accommodated in the box body 21 can be easily taken out while suppressing a decrease in strength of the box body 21.

  The third easy break line 19 is a perforation having a plurality of cutting lines arranged at intervals. The interval between the cutting lines of the four connecting portions 19c is preferably smaller than the interval between the cutting lines of the pair of vertical portions 19a and the pair of horizontal portions 19b. The box sheet has four third breakable lines 19 as the distance between the cutting lines of the four connecting parts 19c is smaller than the distance between the cutting lines of the pair of vertical parts 19a and the pair of horizontal parts 19b. It can be easily and reliably broken along the connecting portion 19c. Moreover, according to this structure, it is easy to prevent the fall of the intensity | strength of the 1st width surface panel 3 by preventing the unintentional fracture | rupture of a pair of vertical part 19a and a pair of horizontal part 19b.

  The distance between the cutting lines of the pair of vertical parts 19a and the pair of horizontal parts 19b can be the same as the distance between the cutting lines of the pair of vertical parts 16a and the horizontal part 16b of the first opening forming part 14. The lengths of the cutting lines of the pair of vertical parts 19a and the pair of horizontal parts 19b may be the same as the lengths of the cutting lines of the pair of vertical parts 16a and the horizontal part 16b of the first opening forming part 14. it can.

  The spacing between the cutting lines of the four connection portions 19c can be the same as the spacing between the cutting lines of the pair of connection portions 16c of the first opening forming portion 14. Further, the length of each cutting line of the four connecting portions 19c can be the same as the length of the cutting lines of the pair of connecting portions 16c of the first opening forming portion 14.

  The lower limit of the radius of curvature of the four connecting portions 19c is preferably 3 cm, and more preferably 4 cm. On the other hand, the upper limit of the radius of curvature is preferably 8 cm, and more preferably 5 cm. If the curvature radius is less than the lower limit, the third easy-to-break line 19 may not be easily and reliably broken at the four connection portions 19c. On the other hand, if the radius of curvature exceeds the upper limit, the opening areas of the second opening Q and the third opening R become unnecessarily small, and it may not be easy to take out the articles accommodated in the box body 21. .

  The second opening forming portion 15 includes a pair of vertical portions 19a of the third easy break line 19, the first width surface panel 3, and the first length surface panel 1 and the second length adjacent to the first width surface panel 3 in the assembled state. It has a pair of 4th easy-to-break lines 20 comprised so that fracture | rupture between the upper ends of the boundary line between the saddle panels 2 is possible.

  The pair of fourth easy break lines 20 includes a pair of inclined portions 20a connecting the pair of vertical portions 19a of the third easy break line 19 and the side edges of the first width surface panel 3, the first width surface panel 3 and the first width line. It has a pair of vertical parts 20b formed on the boundary line between the long surface panel 1 and the second length surface panel 2 and connecting the pair of inclined portions 20a and the upper end of the boundary line. The pair of inclined portions 20a and the pair of vertical portions 20b are each linear. The pair of inclined portions 20 a are inclined upward from the pair of vertical portions 19 a of the third breakable line 19 toward the boundary line.

  The pair of fourth easy break lines 20 is a perforation having a plurality of cutting lines arranged at intervals. The interval between the cutting lines of the pair of fourth breakable lines 20 can be the same as the interval between the cutting lines of the pair of vertical portions 16a and the horizontal portion 16b of the first opening forming portion 14. The length of each cutting line of the pair of fourth breakable lines 20 can be the same as the length of the cutting lines of the pair of vertical portions 16a and horizontal portions 16b of the first opening forming portion 14.

  In the box sheet, the third breakable line 19 has a pair of vertical portions 19a, a pair of horizontal portions 19b, and four connecting portions 19c. Therefore, as shown in FIG. An annular second opening Q can be formed, and an article can be taken out from the second opening Q relatively easily. Moreover, since the 2nd opening formation part 15 has the pair of 4th easy break lines 20 in addition to the 3rd easy break line 19, the 2nd opening Q in the 1st width surface panel 3 and a pair of said box sheet | seat By removing the upper region of the fourth easy-to-break line 20 together with the first upper inner flap 7, in addition to the second opening Q, the first wide surface panel 3 reaches the upper edge of the first wide surface panel 3. Three openings R can be formed. Therefore, the box sheet can select the second opening Q and the third opening R according to the location of the box body 21 and the remaining amount of articles accommodated in the box body 21. Can be increased.

  In the box sheet, the pair of inclined portions 20a are inclined upward from the pair of vertical portions 19a of the third breakable line 19 toward the boundary line. By breaking the line 19, it is possible to prevent the pair of fourth easy break lines 20 from being unintentionally broken when the third easy break line 19 is broken, and to easily and reliably form the second opening Q. can do. In addition, the box sheet breaks the third easy break line 19 from the lower connection part 19c, so that the pair of fourth easy break lines continues to the pair of vertical parts 19a of the third easy break line 19. 20 is easy to break. Therefore, the box sheet can easily form the third opening R from the state where the second opening Q is not formed in the first width panel 3.

<Advantages>
The box sheet includes a first opening forming portion 14 formed in the second upper surface flap 2 extending from the upper edge of the second length surface panel 2 and the second length surface panel 2, and a first width surface panel. Since the second opening forming portion 15 formed in 3 is provided, the article can be visually recognized and taken out from either the second length surface panel 2 or the first width surface panel 3 in the assembled state. Further, since the first opening forming portion 14 is formed across the second length face panel 3 and the second upper outer flap 6 in the box sheet, it is possible to visually recognize and take out the article from above in the assembled state. it can. Therefore, the box body 21 formed by assembling the box sheet is excellent in visibility and take-out property of the article.

[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.

  For example, the first opening forming portion may be formed in the first length surface panel and the first upper outer flap, and the second opening forming portion may be formed in the second width surface panel.

  As long as the first opening forming portion is formed over one long surface panel and one upper outer flap extending from the upper edge of the long surface panel, the specific configuration is the same as that of the above embodiment. The configuration is not limited. For example, the first opening forming portion may be formed in an annular shape, an elliptical shape, a square shape or the like as a whole. Further, the first easy break line and the second easy break line may be formed by alternately arranging relatively long slits and relatively short connecting portions connecting these slits. The one upper outer flap may not be provided with a break starting tongue adjacent to the second easy break line. Further, the box sheet may have a break starting tongue piece adjacent to the first easy break line.

  As long as the second opening forming portion is formed in one of the width panel, the specific configuration is not limited to the configuration of the above embodiment. For example, the second opening forming portion may not have the pair of fourth easy break lines. The third easy break line may be formed in, for example, an annular shape or an elliptical shape.

  When the first easy-to-break line has a pair of vertical parts and horizontal parts, these vertical parts and horizontal parts do not necessarily have to be linear. Moreover, when the said 3rd easy break line has a pair of vertical part and a pair of horizontal part, these vertical parts and a horizontal part do not necessarily need to be linear form.

  From the viewpoint of increasing the opening area of the first opening, it is preferable that a notch corresponding to the second easy-to-break line is formed in the pair of upper inner flaps as described above. On the other hand, for example, when a relatively small first opening is formed in a region that does not overlap with the pair of upper inner flaps, the pair of upper inner flaps do not have to be formed with a notch. In addition, the box sheet may be provided with an easy-to-break line at a position corresponding to the edge of the notch instead of the notch.

  In the above embodiment, a description has been given of a configuration in which the bottom portion is formed by bending the pair of lower inner flaps inward and further bending the pair of lower outer flaps inward. The specific structure for forming is not particularly limited. Moreover, the specific structure for forming the cover part of the box of the box sheet is not limited to the structure of the above embodiment.

  As described above, the box sheet of the present invention is suitably used for storage, transportation and display of articles.

DESCRIPTION OF SYMBOLS 1 1st length surface panel 2 2nd length surface panel 3 1st width surface panel 4 2nd width surface panel 5 1st upper side outer flap 6 2nd upper side outer flap 7 1st upper side inner flap 7a Notch 8 2nd upper side inside Flap 8a notch 9 first lower outer flap 10 second lower outer flap 11 first lower inner flap 12 second lower inner flap 13 glue margin 14 first opening forming portion 15 second opening forming portion 16 first 1 easy break line 16a vertical part 16b horizontal part 16c connection part 17 second easy break line 17a cutting line 18 tongue piece 18a tongue piece forming cutting line 19 third easy break line 19a vertical part 19b horizontal part 19c connection part 20 4th Easy break line 20a Inclined portion 20b Vertical portion 21 Box P First opening Q Second opening R Third opening X Sealing tape

Claims (5)

A pair of long surface panels and a pair of width surface panels that are alternately connected in the left-right direction and assembled into a square cylinder;
A pair of upper outer flaps extending from the upper edges of the pair of length surface panels;
A pair of upper inner flaps extending from the upper edges of the pair of width surface panels,
A box sheet that can be assembled into a box shape,
A first opening forming portion is formed on one of the long surface panels and one of the upper outer flaps extending from the upper edge of the long surface panel,
A second opening forming portion is formed on one of the width panels;
The first opening forming portion is connected to both ends of the first easy-to-break line and the first easy-to-break line that protrudes downward with the boundary line between the one long surface panel and the one upper outer flap as both ends. And having a second easy-to-break line that is convex on the tip side of the one upper outer flap,
The box sheet in which the second opening forming portion has an annular third easy-to-break line. The third easy-to-break line extends in the vertical direction, and a pair of vertical portions arranged in parallel in the left-right direction, and a pair of horizontal portions extended in the left-right direction and arranged in parallel in the vertical direction And is formed in an outwardly convex arc shape, and is a substantially quadrangular ring having four connecting portions that connect the adjacent ends of the vertical portion and the horizontal portion,
The second opening forming portion is configured to be able to break between the pair of vertical portions and the one width surface panel and the upper end of the boundary line between the pair of length surface panels adjacent to the width surface panel in the assembled state. The box sheet according to claim 1, further comprising a pair of fourth easy-to-break lines. The third easy break line is a perforation having a plurality of cutting lines arranged at intervals,
The box sheet according to claim 2, wherein an interval between the cutting lines of the four connection portions is smaller than an interval between the cutting lines of the pair of vertical portions and the pair of horizontal portions.   The said 1st opening formation part is formed in said one upper outside flap, The tongue piece for a fracture | rupture start which adjoins the said 2nd easy-to-break line is further described in Claim 1, Claim 2 or Claim 3 Box sheet.   The box sheet according to any one of claims 1 to 4, wherein a notch corresponding to the second easy-to-break line is formed in the pair of upper inner flaps.

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