JP2016049992A - Sheet packaging box - Google Patents

Abstract

The present invention provides a sheet packaging box in which a sheet can be easily pulled out and can always be cut well. In a sheet packaging box having a first protruding piece 23 on a front plate 20 of a main body 100, the sheet is connected to an upper edge 22 of the front plate 20, and the upper edge 22 is folded back as a fold to be placed on the back surface of the front plate 20. A second projecting piece 91 is formed on the inner surface plate 90 to be bonded, and both end portions of a cutting line 91a forming the second projecting piece 91 are extended beyond the upper edge 22 to the front plate 20 side. . [Selection] Figure 1

Description

  The present invention relates to a sheet packaging box that accommodates a winding roll of a long sheet, and draws out and cuts a sheet having a desired length.

  Conventionally, as a packaging box for sheets such as a wrap film, cooking sheet, and aluminum foil, a long sheet drawn from a wound roll stored in a box-shaped main body, a front plate of the main body, and a suspension plate of the lid There is known a packaging box that is sandwiched between and cut with a cutting blade provided at the tip edge of the suspension plate. For example, Patent Document 1 discloses a sheet packaging box in which a protruding piece is provided on a front plate of a main body so that a leading end portion of a cut wrap film is lifted from the front plate to be easily pulled out.

JP 2002-274534 A

  In the packaging box described in Patent Document 1, by cutting the front plate from the upper edge and forming a protruding piece on the front plate, the protruding piece naturally protrudes outward and the lower end of the wrap film is the front plate. However, the projecting piece fits into the cut portion of the front plate and does not protrude from the front plate, and the function of easily pulling out the wrap film has not been obtained.

  In order to cut the drawn sheet satisfactorily, it is necessary to press the cutting blade against the sheet by pressing the suspension plate of the lid with the thumb of the hand. However, when the top plate of the lid or the front edge of the top plate is pressed, the lower end of the suspension plate floats and the cutting blade is not sufficiently pressed against the sheet, causing the sheet to tear vertically and cutting well. There were cases where it was not possible. In particular, when a longitudinal tear is caused by a highly adhesive sheet such as a wrap film, there is a problem that it is difficult to pull out.

  An object of the present invention is to provide a sheet packaging box that solves the above-described problems, facilitates drawing of a sheet such as a wrap film, and can always be cut well.

The sheet packaging box of the present invention includes a bottom plate, a front plate that is connected to four sides of the bottom plate via a folding portion and is bent through the folding portion and raised from the bottom plate, and left and right side plates. A back plate and an inner plate that is continuous with the upper edge of the front plate via a fold and is folded inward through the fold and bonded to the back surface of the front plate. A box-shaped body for storing the wound roll;
An upper surface plate that covers the upper surface opening of the main body by being bent through the folding portion and is connected to the upper edge of the back plate, and is connected to the front edge of the upper surface plate through the folding portion and the folding. A suspension plate that overlaps the outside of the front plate by being bent through a portion, and a lid that is rotatably connected from the upper edge of the back plate of the main body,
A cutting blade attached to the lower end of the suspension plate,
In the sheet packaging box having a first projecting piece formed by cutting the front plate into a shape projecting downward from the upper edge of the front plate,
A second projecting piece cut and formed in a shape projecting downward from an upper edge of the inner surface plate in a region overlapping the first projecting piece of the inner surface plate; Both ends of the cutting line forming the projecting piece are on the front plate side beyond the folding portion where the inner plate and the front plate are connected.

In the sheet packaging box of this invention, the following structure is included as a preferable aspect.
Both ends of the cutting line forming the second projecting piece are curved in a direction approaching each other in the front plate.
The lower end of the suspension plate is a straight line parallel to the upper end of the suspension plate, and the first protruding piece and the second protruding piece are in the vicinity of at least one end in the width direction of the front plate and the inner plate. Be provided.
The lower end of the suspension plate is inclined downward from both ends in the width direction toward the center, and the center in the width direction of the first projecting piece and the second projecting piece corresponds to the front plate and the inner surface plate. Located in the center in the width direction.

  In the sheet packaging box of the present invention, the second protrusion piece is provided on the inner face plate connected to the front face plate, and both ends of the cutting line of the second protrusion piece are extended to the front face plate side. Even when the provided first protruding piece is fitted into the cut portion of the front plate, the first protruding piece can be easily formed by pressing the upper edge of the inner surface plate on which the second protruding piece is formed. Can jump out. Further, even when the upper plate of the lid or the front edge of the upper plate is pressed when the sheet is cut, the upper edge of the inner plate on which the second protruding piece is formed on the upper plate is removed. Since the first projecting piece acts to protrude outward, the sheet is strongly pressed against the cutting blade, and the sheet can be cut well.

It is an expanded view of one Embodiment of the sheet packaging box of this invention. It is a perspective view which shows the state which opened the cover body after opening of one Embodiment of the sheet packaging box of this invention. It is a cross-sectional schematic diagram of the direction orthogonal to the width direction in the center of the width direction of one Embodiment of the sheet packaging box of FIG. It is a cross-sectional schematic diagram of the direction orthogonal to the width direction for showing the effect | action of the 1st and 2nd protrusion piece which concerns on this invention. It is the perspective view which showed a mode that one Embodiment of the sheet packaging box of this invention opened. It is an expansion perspective view of the side plate vicinity of one Embodiment of the sheet packaging box of this invention. It is an expanded view of the side plate vicinity of other embodiment of the sheet packaging box of this invention. FIG. 8 is an enlarged perspective view near the side plate of the embodiment shown in FIG. 7.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments. In the drawings referred to below, the same reference numerals denote the same components. In addition, the dashed-dotted line in a figure shows a folding part. Further, in the present invention, the “width direction” and the “left-right direction” are the width direction of the stored sheet, and indicate the up-down direction on the paper surface in FIG.

  The sheet packaging box according to the present invention will be described in detail with reference to FIGS.

  The sheet packaging box of the present invention includes a main body 100, a lid body 200, and a cutting blade 300, and a winding roll 400 of a sheet 401 is accommodated in the main body 100 to form a packaging body.

  As shown in FIG. 1, the sheet packaging box of the present invention can be formed by cutting out from one sheet material except for the cutting blade 300, bending it, and fixing a predetermined portion with an adhesive or the like. The sheet material used for the packaging box of the present invention is usually paper having elasticity and flexibility, and those having a surface appropriately coated with a resin layer are also preferably used. Further, the cutting blade 300 is separately formed from metal, resin, and paper, and is attached to a predetermined position of the lid 200.

  The sheet 401 stored in the sheet packaging box of the present invention is mainly food, cooking wrap film, aluminum foil, and cooking sheet. However, the use is not particularly limited as long as it is a similar sheet. These sheets 401 are provided in the form of a long sheet, wound around a cylindrical core material, or wound into a cylindrical shape without using a core material to form a wound roll 400, and the main body of the sheet package of the present invention 100.

  As shown in FIGS. 1 and 2, the main body 100 includes a bottom plate 10, a front plate 20 that is connected to each of the four sides of the bottom plate 10 via folding portions, and a side plate 30 a on the left and right (up and down direction in FIG. 1). , 30b and a back plate 40. Then, the front plate 20, the side plates 30a, 30b, and the back plate 40 are bent at 90 ° through the folding portions and raised from the bottom plate 10 to form the box-shaped main body 100. In the present embodiment, auxiliary pieces 21a and 21b are provided on the left and right sides of the front plate 20 via folding parts, and auxiliary pieces 41a and 41b are provided on the left and right sides of the back plate 40 via folding parts, respectively. Therefore, when the front plate 20, the side plates 30a and 30b, and the back plate 40 are respectively raised from the bottom plate 10, the auxiliary pieces 21a and 41a are respectively connected to the front plate 20 and the back plate 40 through the folding portions. The auxiliary pieces 21b and 41b are bent from the front plate 20 and the back plate 40 to the inner side of the side plate 30b by folding them at 90 ° through the folding portions, respectively. It can be stuck and fixed via an agent.

  In the present invention, the upper edge 22 of the front plate 20 is at the same position as or lower than the ends of the upper edges 32a, 32b of the side plates 30a, 30b on the front plate 20 side. In the present embodiment, as shown in FIG. 6, the upper edge 22 of the front plate 20 is located at a position lower than the end portions of the upper edges 32a and 32b of the side plates 30a and 30b on the front plate 20 side. In this embodiment, as shown in FIG. 1, the height H4 of the side plates 30a, 30b is constant and equal to the height H3 of the back plate 40. Therefore, in this embodiment, as shown in FIG. 6, the height H4 of the side plates 30a and 30b and the height H3 of the back plate 40 are higher than the height H1 of the front plate 20 by h1.

  Thus, even when the lid 200 is closed because the upper edge 22 of the front plate 20 is lower than the upper edges 32a and 32b of the side plates 30a and 30b, the upper plate 50 and the front plate 20 does not contact the upper edge 22, a gap of h1 is secured, and the sheet 401 can be pulled out without difficulty. The height of h1 is preferably about 1 to 3 mm.

  The lid 200 has an upper surface plate 50 connected to the upper edge of the back plate 40 of the main body 100 via a folding portion, and a suspension plate 60 connected to the front edge of the upper surface plate 50 via the folding portion. . Therefore, the upper plate 50 is bent from the rear plate 40 through the folding portion, and the suspension plate 60 is bent from the upper plate 50 through the folding portion and fixed by 90 °, thereby fixing the boundary between the suspension plate 60 and the upper plate 50. The lid body 200 in which the angle of the folding part is fixed at 90 ° is formed. In the present embodiment, auxiliary pieces 51 a and 51 b are provided on the left and right sides of the upper surface plate 50 via folding parts, and auxiliary pieces 61 a and 61 b are provided on the left and right sides of the suspension plate 60, respectively. Therefore, the auxiliary pieces 51a and 51b are bent from the upper surface plate 50 to 90 ° via the folding portion, and similarly, the auxiliary pieces 61a and 61b are bent from the suspension plate 60 to 90 ° via the folding portion, and the auxiliary pieces 51a and 61a and 51b are bent. The lid body 200 can be easily formed by laminating and 61b.

  A cutting blade 300 for cutting the sheet 401 is attached to the lid 200 as shown in FIGS. 2 and 3. The cutting blade 300 has a tip of the cutting blade 300 extending from the lower end 60 a of the suspension plate 60. It is attached inside the suspension plate 60 so as to protrude. In the present embodiment, the lower end 60a of the suspension plate 60 forms a downward chevron that is inclined downward from both ends in the width direction toward the center. In this way, when the lower end 60a of the suspension plate 60 is a downward angle, it has been difficult to cut the sheet 401 unless the center of the suspension plate 60 is pressed in the width direction. However, in the present invention, the second protruding piece 91 described later is used. By providing, the sheet 401 can be cut more favorably.

  In the present embodiment, as shown in FIG. 1, an opening plate 70 connected to the suspension plate 60 via a perforation 80 is disposed at the lower end 60 a of the suspension plate 60. The lid 200 is fixed to the main body 100 by being attached to the face plate 20 with an adhesive or the like. At this time, the tip of the cutting blade 300 attached to the inside of the suspension plate 60 is covered with the opening plate 70, and when opening, the lid 200 is opened by separating the opening plate 70 at the perforation 80 as shown in FIG. Then, the tip of the cutting blade 300 is exposed, and the sheet 401 can be cut.

  In this embodiment, it has the 1st protrusion piece 23 cut and formed in the shape which protrudes toward the downward direction from the upper edge 22 of the front plate 20 in the intermediate part of the width direction of the front plate 20. Reference numeral 23 a in FIG. 1 denotes a first cutting line that forms the first protruding piece 23. The first projecting piece 23 has both ends of the first cutting line 23 a reaching the upper edge 22 of the front plate 20. The first projecting piece 23 is rotated around the upper edge 22, and the lower part projects outward and is pulled out. The action of pressing the sheet 401 against the suspension plate 60 is exhibited. Further, after the sheet 401 is cut, when the sheet 401 is pulled out next, the front end of the sheet 401 is lifted from the front plate 20 so that the front end can be easily pinched.

  The present invention further includes an inner surface plate 90 that is connected to the upper edge 22 of the front plate 20 via a fold portion and is folded inward via the fold portion and bonded to the back surface of the front plate 20. A feature of the present invention resides in that a second protruding piece 91 is formed on the inner surface plate 90. The second projecting piece 91 is formed in a region overlapping the first projecting piece 23 formed on the front plate 20, and extends downward from the upper edge (also the upper edge of the front plate 20) 22 of the inner surface plate 90. It is formed by cutting into a shape that protrudes toward it. Further, the second cutting line 91a forming the second projecting piece 91 is the upper edge 22 of the inner surface plate 90 and the front plate 20, and beyond the folding portion that is the boundary between both plates to the front plate 20 side. Has reached. In the developed view shown in FIG. 1, the first projecting piece 23 and the second projecting piece 91 are formed in a shape projecting in opposite directions.

  In such a configuration, when the sheet 401 is cut, when the top plate 50 of the lid 200 or the front edge of the top plate 50 is pressed, the folded portion that is the boundary between the inner plate 90 and the front plate 20, that is, the upper edge 22 is formed. It will be pressed through the top plate 50. That is, a pressing force is applied to the upper edge 22 as shown by an arrow 501 in FIG. 4A, and a stress acts in the direction in which the folded portion spreads. In addition, when the lid 200 is closed and the suspension plate 60 is pressed, the upper surface plate 50 presses the upper edge 22 of the inner surface plate 90, and similarly, stress acts in the direction in which the folded portion spreads.

  Here, as shown in FIG. 1, the second projecting piece 91 has both ends of the second cutting line 91 a beyond the upper edge 22 to reach the front plate 20, and thus the arrow 501 in FIG. 4A. When the upper edge 22 is pushed downward as shown in FIG. 4B, the members on both sides that are continuously folded with the upper edge 22 as a fold portion widen the fold portion away from each other. As shown, the lower part of the second protruding piece 91 protrudes further into the main body 100. Then, stress acts on the front plate 20 on which both ends of the second cutting line 91a forming the second projecting piece 91 are positioned in the direction of expanding the folded portion that is the upper edge 22, and as a result, downward The lower part of the first projecting piece 23 having a free end projects further outward as indicated by an arrow 503 in FIG.

  Thereby, the 1st protrusion piece 23 will push up the sheet | seat 401 strongly, the sheet | seat 401 will contact | connect the cutting blade 300 more strongly, and can cut | disconnect the sheet | seat 401 favorably. Therefore, not only when the central portion in the width direction of the suspension plate 60 is pressed, but also when the upper surface plate 50 or the folded portion at the boundary between the upper surface plate 50 and the suspension plate 60 is pressed, the upper surface plate 50 is above the inner surface plate 50. The edge 22 is pressed, and the sheet 401 is strongly pressed against the cutting blade 300 and can be cut well.

  In addition, even when the first protruding piece 23 is fitted in the cut portion formed by the first cutting line 23a, the first protruding piece can be obtained by pressing the upper edge 22 of the second protruding piece 91. The lower end of 23 can be easily protruded outward.

  Furthermore, since the state where the first projecting piece 23 is in strong contact with the sheet 401 continues even after the sheet 401 is cut, the sheet 401 is prevented from being rewound, and the leading end of the sheet 401 can be easily pinched when it is next pulled out. Can do.

  In the present embodiment, the lower end 60a of the suspension plate 60 is a downward mountain shape, and the cutting of the sheet 401 starts from the top of the mountain shape, that is, the center portion in the width direction of the suspension plate 60. It is preferable to form the first projecting piece 23 and the second projecting piece 91 so that the center part in the width direction of the two projecting pieces 91 is located in the center part in the width direction of the front plate 20 and the inner surface plate 90.

  1 and 2 show a shape in which the lower end 60a of the suspension plate 60 has a downward mountain shape, but the present invention is not limited to this shape, and the lower end 60a is a straight line parallel to the upper end. It may be a shape. In this case, since the cutting of the sheet 401 starts from one end in the width direction of the suspension plate 60, the first protrusion piece 23 and the second protrusion piece 91 are at least one end in the width direction of the suspension plate 60. It is preferable that they are provided in the vicinity of the part, preferably in the vicinity of both ends.

  Regardless of the shape of the lower end 60a of the suspension plate 60, the outside of the suspension plate 60 is provided with a mark of a position to be pressed with a finger when cutting the sheet 401 by printing, embossing, application of a non-slip varnish, or the like. Is preferred.

  In the present invention, the width W2 of the first projecting piece 23 depends on the width W1 of the front plate 20, but is generally about 30 to 200 mm. In order to maintain the strength of the box, about 40 to 100 mm is preferable. . The width W3 of the second protruding piece 91 is 15 to 170 mm narrower than the width W2 of the first protruding piece 23. Further, the height H6 of the first projecting piece 23 is lower than the height H1 of the front plate 20, a sufficient height is secured below the first projecting piece 23, and may be hidden by the suspension plate 60, The height H7 of the second projecting piece 91 may be about 5 to 10 mm as long as the above-described action of pushing the first projecting piece 23 outward is exerted, and the second projecting piece 91 has a second height on the front plate 20 side. The length H8 of the cutting line 91a may be about 2 to 5 mm.

  Moreover, in order to prevent the front plate 20 from being torn at both ends of the second cutting line 91a by frequently pressing the upper edge 22, both ends of the second cutting line 91a are as shown in FIG. It is preferable to bend in the direction approaching each other.

  Although the inner surface plate 90 is bonded to the inner side of the front plate 20, the second protruding piece 91 is not bonded to the first protruding piece 23 and the first protruding piece 23 is not bonded to the inner surface plate 90, respectively. The inner surface plate 90 and the front plate 20 are bonded to each other in a region other than the first protruding piece 23.

  In the present invention, as shown in FIGS. 7 and 8, the upper edges 32a and 32b of the side plates 30a and 30b of the main body 100 are inclined downward from the back plate 40 side toward the front plate 20 side. Is also preferable. That is, the height H4 'on the front plate 20 side is lower by h2 than the height H4 on the back plate 40 side of the side plates 30a, 30b.

  In the present embodiment, the upper edge 22 of the front plate 20 is at the same position as or lower than the ends of the upper edges 32a and 32b of the side plate 30 on the front plate 20 side. When the upper plate 50 is pulled out and closed so that the upper surface plate 50 comes into contact with the upper edges 32a, 32b of the side plates 30a, 30b, the upper surface plate 50 also moves along the upper edges 32a, 32b. It inclines toward the front plate 20 side from the side. The angle of the corners formed by the upper edges 32a, 32b of the side plates 30a, 30b and the end on the front plate 20 side is an obtuse angle exceeding 90 °, whereas the suspension plate 60 is folded from the top plate 50. It is bent at an angle of 90 ° through the part. Therefore, the suspension plate 60 in contact with the side plates 30a and 30b on the side of the front plate 20 is pressed more strongly on the side of the front plate 20 on the front end side (lower end 60a) than on the top plate 50 side.

  Further, in the present invention, the depth D2 of the top plate 50 is formed to be equal to the depth D1 of the side plates 30a, 30b and the bottom plate 10 or slightly longer than D1. Since the upper edges 32a and 32b of the side plates 30a and 30b are slightly longer than D1 and D due to the inclination, the upper plate 50 contacts the upper edges 32a and 32b and the lid 200 is closed. The top plate 50 is pulled in the depth direction, and the suspension plate 60 is strongly pressed against the edge of the front plate 20.

  Since the left and right sides of the suspension plate 60 are strongly pressed against the end sides of the side plates 30a and 30b, the entire suspension plate 60 is strongly pressed against the front plate 20 without a gap, and is attached to the inside of the lower end 60a of the suspension plate 60. The cutting blade 300 thus pressed is strongly pressed against the front plate 20 toward the inside of the main body 100. Therefore, when cutting the sheet 401, the first protruding piece 23 formed on the front plate 20, the sheet 401, and the tip of the cutting blade 300 are in close contact with each other, and the sheet 401 can be cut well. .

  In this embodiment, the ratio of the difference in height h2 between the front and rear edges of the upper edges 32a, 32b to the degree of inclination of the side plates 30a, 30b, that is, the depth D1 in the direction parallel to the bottom plate of the side plates 30a, 30b (h2 / D1) is too small, the force for pressing the tip of the cutting blade 300 against the sheet 401 cannot be obtained sufficiently. On the other hand, if it is too large, the top plate 50 is difficult to contact the upper edges 32a, 32b of the side plates 30a, 30b. Conversely, it becomes difficult to cut the sheet 401. Although it depends on the value of D1 corresponding to the type of sheet 401, the material of the package, and the outer diameter of the wound roll 400 to be stored, h2 / D1 is preferably 0.022 to 0.067. For example, in the case of D1 = 45 mm in aluminum foil or wrap film packaging boxes that are widely sold, h2 is preferably about 1.0 to 3.0 mm.

  Further, in the present embodiment, the upper edges 32a and 32b of the side plates 30a and 30b are provided with auxiliary pieces 31a and 31b connected to the upper edges 32a and 32b as folds. The strength of 32b is improved as compared with the case where the auxiliary pieces 31a and 31b are not provided.

  Further, as described above, in the present embodiment, by using the opening plate 70, the cutting blade 300 is not exposed until just before opening, and the opening body 70 can be easily opened by separating the opening plate 70. . Here, by making the total height H5 of the suspension plate 60 and the opening plate 70 equal to the height H3 of the back plate 40, when assembling the packaging box, the tip of the opening plate 70 is placed on the front plate 20. If affixed in accordance with the lower ends, even if the upper edges 32a, 32b of the side plates 30a, 30b are inclined, the upper surface plate 50 is not inclined in the front-rear direction. Even if H5 and H3 are not equal, if H5 <H3, the top plate 50 can be obtained by shifting the tip of the unsealing plate 70 from the lower end of the front plate 20 when the unsealing plate 70 is attached to the front plate 20. Can be parallel to the bottom plate 10.

  Thus, the shape of the package can be a rectangular parallelepiped by assembling the top plate 50 so as to be parallel to the bottom plate 10. As a result, similar to the conventional package, there is no fear of slipping even when stacked in the vertical direction, and transportation and display can be performed as in the conventional case.

  In the sheet packaging box of the present invention, as described above, since the tip of the cutting blade 300 is closely attached to the front plate 20, the sheet 401 pulled out from the winding roll 400 is linearly formed from the start to the end at a desired position. It can cut well. Further, since the package is a rectangular parallelepiped, it can be handled in the same manner as a conventional package during transportation and display.

  10: Bottom plate, 20: Front plate, 21a, 21b: Auxiliary piece, 22: Upper edge of front plate, 23: First protruding piece, 23a: First cutting line, 30a, 30b: Side plate, 31a, 31b: auxiliary piece, 32a, 32b: upper edge of side plate, 40: back plate, 41a, 41b: auxiliary piece, 50: top plate, 51a, 51b: auxiliary piece, 60: suspension plate, 60a: lower end of suspension plate 61a, 61b: auxiliary piece, 70: opening plate, 80: perforation, 90: inner surface plate, 91: second protruding piece, 91a: second cutting line, 100: main body, 200: lid body, 300: Cutting blade, 400: winding roll, 401: sheet

Claims (4)

A bottom plate, and a front plate, left and right side plates, a back plate, and a front plate that are connected to four sides of the bottom plate via folding portions and are bent through the folding portion and raised from the bottom plate. A box shape that houses a winding roll of a long sheet, and has an inner surface plate that is continuous with the upper edge via a folding portion and is folded inward via the folding portion and bonded to the back surface of the front plate. The body of
An upper surface plate that covers the upper surface opening of the main body by being bent through the folding portion and is connected to the upper edge of the back plate, and is connected to the front edge of the upper surface plate through the folding portion and the folding. A suspension plate that overlaps the outside of the front plate by being bent through a portion, and a lid that is rotatably connected from the upper edge of the back plate of the main body,
A cutting blade attached to the lower end of the suspension plate,
In the sheet packaging box having a first projecting piece formed by cutting the front plate into a shape projecting downward from the upper edge of the front plate,
A second projecting piece cut and formed in a shape projecting downward from an upper edge of the inner surface plate in a region overlapping the first projecting piece of the inner surface plate; A sheet packaging box, wherein both end portions of a cutting line forming a protruding piece are on the front plate side beyond a folding portion where the inner surface plate and the front plate are connected.   2. The sheet packaging box according to claim 1, wherein both end portions of a cutting line forming the second projecting piece are curved toward each other in the front plate.   The lower end of the suspension plate is a straight line parallel to the upper end of the suspension plate, and the first projecting piece and the second projecting piece are in the vicinity of at least one end in the width direction of the front plate and the inner surface plate. The sheet packaging box according to claim 1, wherein the sheet packaging box is provided.   The lower end of the suspension plate is inclined downward from both ends in the width direction toward the center, and the center in the width direction of the first projecting piece and the second projecting piece corresponds to the front plate and the inner surface plate. It is located in the center part of the width direction, The sheet packaging box of Claim 1 or 2 characterized by the above-mentioned.

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