JP6770163B1 - Packing sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing sheet which can suppress damage to contents and can be assembled into a packing member whose size and structure of an outer box to be packed are not easily restricted. SOLUTION: The packing sheet of the present invention is a packing sheet formed from one sheet material and can be assembled into a packing member, and is folded back to a rectangular top panel and a lower surface side of the top panel. It is provided with a bottom panel that forms a flat cylinder together with the top panel, an upper support panel that can be bent above the top panel, and a lower support panel that can be bent below the bottom panel, and is provided on the side of the upper support panel. The edge is inclined inward in the width direction from the base end side to the tip end side, and the side edge of the lower support panel facing the side edge of the upper support panel is inward in the width direction from the base end side to the tip end side. It is further provided with a piece of connection that is tilted, connects the opposing side edges of the upper and lower support panels, and is folded so as to close at least a portion of the end opening of the flat tube. [Selection diagram] Fig. 1

Description

The present invention relates to a packing sheet.

With the spread of Internet shopping, a wide variety of products are packed and transported. When packing this product, for example, an outer box of several sizes is prepared, and the smallest outer box in which the product can be packed is used.

The shapes of products vary widely. For example, when the product is a flat disc such as a CD or DVD, even if the smallest outer box is selected, a space is likely to be generated in the vertical direction thereof. If transported in this state, the disc may move freely in the box and cause damage to the disc.

As a packing member for suppressing such disc damage, a support having two holding pieces that are bent in a U shape as a whole and hold the contents and one connecting piece that connects the two holding pieces. Has been proposed (see Japanese Square Root Extraction 1-110193). The support includes a contact piece that extends from a pair of opposite side sides of each holding piece, is bent in a direction opposite to the connecting piece, and abuts on the inner wall of the outer box. Further, the two holding pieces are bulged outward and curved, and are configured to surely bring the contact pieces into contact with the inner wall of the box.

Square root extraction No. 1-101193

In the conventional support, the disc is sandwiched and fixed by the edges of the two sandwiching pieces. Therefore, the width of the holding piece needs to match the width of the disc. Further, since the holding piece also has a function of bringing the contact piece into contact with the inner wall of the box, the width of the holding piece must be the same as the width of the outer box. That is, it is premised that the width of the disk and the width of the outer box match, and the size of the outer box is restricted. Therefore, it is necessary to prepare a dedicated outer box for the disc, and it is difficult to share it with a box used for packing other products.

Further, since the side edges of the two holding pieces facing each other are not connected, the holding of the disk on the side edge side is exclusively controlled by the height of the box. Therefore, if a box that is opened on the top surface side is used, the disc may not be sufficiently sandwiched depending on the sealed state of the top surface of the box, and the disc may not be fixed in the box. Therefore, when the above-mentioned conventional support is used, it is necessary to use a box having a side-opening structure.

As described above, in the conventional support, it is necessary to use a box having a size and structure suitable for the support, and it is difficult to use a box common to the packaging of other products.

The present invention has been made in view of such circumstances, and can be used as a packing member capable of suppressing damage to the contents even if the contents are in the form of a disc, and the size and structure of the outer box to be packed are not easily restricted. The subject is to provide a packing sheet that can be assembled.

The packing sheet of the present invention is a packing sheet formed of a single sheet material, which is housed in an outer box and can be assembled into a packing member for protecting the contents, and has a rectangular top panel. , A pair of bottom surfaces that extend from the pair of first side edges of the top panel facing each other, are folded back to the lower surface side of the top panel, and the tips are connected to each other to form a flat tubular portion together with the top panel. A panel, a pair of upper support panels extending upward from a pair of opposite second side edges of the top panel, and a pair of side edges of the bottom panel extending upward, and the bottom panel extending from the top surface. It is provided with a pair of lower support panels that can be folded downward while being folded downward, and a pair of side edges of the upper support panel are inclined inward in the width direction from the base end side to the tip end side. However, the side edge of the lower support panel facing the side edge of the upper support panel is inclined inward in the width direction from the base end side to the tip end side, and the upper support panel and the lower support panel The upper support panel and the lower support panel are further provided with two pairs of connecting pieces that are folded on the outer surface side of the upper support panel and the lower support panel so as to connect the opposite side edges of the flat cylinder portion and close at least a part of the end opening of the flat cylinder portion. ..

The packing sheet of the present invention can be assembled into a packing member that can prevent damage to the contents even if it is a disc-shaped content, and the size and structure of the outer box to be packed are not restricted.

FIG. 1 is a schematic plan view (developed view) showing a packing sheet according to one aspect of the present invention. FIG. 2 is a schematic perspective view showing a state in which a packing member formed by assembling the packing sheet of FIG. 1 is housed in an outer box. FIG. 3 is a schematic perspective view showing a packing member formed by assembling the packing sheet of FIG. 1. FIG. 4 is a schematic cross-sectional view showing a state in which the first mountain fold line portion to the fourth mountain fold line portion of the packing member of FIG. 3 is mountain-folded. FIG. 5 is a schematic plan view showing an intermediate stage of assembling the packing sheet of FIG. 1 into a packing member.

[Explanation of Embodiments of the Present Invention]
First, embodiments of the present invention will be listed and described.

The packing sheet according to an embodiment of the present invention is a packing sheet formed of one sheet material, which is housed in an outer box and can be assembled into a packing member for protecting the contents, and has a rectangular shape. Extends from the top panel and the pair of first side edges of the top panel facing each other, folded back to the lower surface side of the top panel, and the tips are connected to each other to form a flat cylinder together with the top panel. A pair of bottom panels to be formed, a pair of upper support panels extending from a pair of second side edges facing each other of the top panel, and being bent upward, and a pair of side edges of the bottom panel extending from the bottom surface. The panel is provided with a pair of lower support panels that are folded downward while the panel is folded downward, and a pair of side edges of the upper support panel are wide from the base end side to the tip end side. The side edge of the lower support panel facing the side edge of the upper support panel is inclined inward in the direction from the proximal end side to the distal end side, and is inclined inward in the width direction. Two pairs that connect the opposite side edges of the lower support panel and are folded on the outer surface side of the upper support panel and the lower support panel so as to close at least a part of the end opening of the flat cylinder portion. It also has a connection piece.

The packing sheet is held by sandwiching the contents between the top panel and the bottom panel. Further, in the packing sheet, the connecting pieces are folded so as to close a part of the opening of the flat cylinder portion formed by the top panel and the bottom panel. Since it becomes difficult for the top panel and the bottom panel to be separated from each other due to the folding of the connecting pieces, the packing sheet holds the contents even if the width of the top panel and the bottom panel is wider than the width of the contents. can do. Therefore, since the widths of the top panel and the bottom panel of the packing sheet can be determined regardless of the width of the contents, the size of the outer box in which the packing member assembled from the packing sheet is put is the width of the contents. Not regulated by. Further, in the packing sheet, the upper support panel and the lower support panel are exclusively used to suppress the vertical movement of the packing member, and the sum of the extension lengths of the upper support panel and the lower support panel can be summed with high accuracy. It is not necessary to match the vertical length of the side panel of the outer box. Therefore, the packing member formed by assembling the packing sheet can also be used for the box to be opened on the top surface side, so that the structure of the outer box is not limited. Therefore, the packing sheet can be assembled into a packing member which can prevent damage to the contents even if the contents are in the shape of a disk and the size and structure of the outer box to be packed are not restricted.

It is preferable that the extension lengths of the lower support panels extending from the ipsilateral edge side of the bottom panel are equal. By making the extension lengths of the lower support panels extending from the ipsilateral edge side of the bottom panel equal in this way, it is easy to keep the flat cylinder portion formed by the top panel and the bottom panel horizontal.

It is preferable that a pair of tongue pieces extending from the tip end side of the pair of upper support panels is further provided, and the tongue pieces have an easily bendable line that defines a boundary with the upper support panel. By further providing a pair of tongue pieces extending from the tip side of the pair of upper support panels in this way, the packing sheet is assembled, and the packing member housed in the outer box is grasped by the tongue pieces. It can be easily taken out by pulling it out. Further, by configuring the tongue piece to have an easy-to-bend line, it can be easily grasped at the time of taking out, and the tongue piece can be configured to be in contact with the top surface of the sealed outer box in a bent state. , The vertical movement of the packing member can be suppressed more reliably.

The top panel has a rectangular first mountain fold line portion composed of a pair of mountain fold lines parallel to the pair of first side edges and a pair of mountain fold lines parallel to the pair of second side edges. It has four corners of the top panel and a second mountain fold line portion consisting of four mountain fold lines connecting the corners of the first mountain fold portion adjacent to each corner, and the pair. When the bottom panel has a third mountain fold line portion having the same shape as the first mountain fold line portion and a fourth mountain fold line portion having the same shape as the second mountain fold line portion in a plan view in an assembled state. Good. By having the first mountain fold line portion to the fourth mountain fold line portion in this way, the central portion of the flat cylinder portion formed by the top panel and the bottom panel can be easily inflated. Therefore, even thick contents can be protected.

The ratio of the length of the connecting piece to close the end opening of the flat cylinder portion to the length of the end opening of the flat cylinder portion is preferably 0.3 or more and 0.5 or less. By setting the above ratio within the above range in this way, the end opening of the flat cylinder portion is appropriately closed without the pair of connecting pieces overlapping, so that the separation between the top panel and the bottom panel is more reliably suppressed. At the same time, it is possible to prevent the contents from falling out from the end opening of the flat cylinder portion when the packing member formed by assembling the packing sheet is stored in the outer box or taken out from the outer box.

The top panel may have an open window. By providing the window opened in the top panel in this way, it is possible to easily confirm the contents protected by the packing member formed by assembling the packing sheet.

Here, "upper" and "lower" mean upper and lower parts in a general usage mode assumed, that is, in a state where the top panel is used as the upper side in a state of being assembled as a packing member. It is not intended to limit the orientation when using. Further, the "mountain fold line" means an easy-to-fold line that can be bent convexly to the outside (outer surface side of the packing member) based on the assembled state.

[Details of Embodiments of the present invention]
Hereinafter, the packing sheet according to the embodiment of the present invention will be described with reference to the drawings as appropriate.

As shown in FIG. 1, the packing sheet 1 according to the embodiment of the present invention is formed of one sheet material, and as shown in FIG. 2, is housed in an outer box P to protect the contents X. It can be assembled to the packing member S of.

The sheet material is not particularly limited as long as it has enough strength to maintain the shape of the packing member S to be assembled and has an appropriate repulsive force, and is, for example, a paper sheet material such as a corrugated cardboard sheet or thick paper. , Synthetic resin sheet material, laminated sheet material of paper sheet and synthetic resin sheet, and the like. Of these, a paper sheet material is preferable, and a corrugated cardboard sheet is particularly preferable, from the viewpoints of workability, shock absorption, handleability, recyclability, economy, and the like.

The corrugated cardboard sheet is not particularly limited, but one in which a corrugated core base paper is bonded to a liner is preferably used. For example, a corrugated core base paper is bonded to one liner. Combined single-sided corrugated cardboard sheet, double-sided corrugated cardboard sheet with a liner attached to the top of the single-sided corrugated cardboard, double-sided corrugated cardboard sheet with the top of the single-sided corrugated cardboard attached to one side of the double-sided corrugated cardboard, one side of the double-sided corrugated cardboard sheet Examples thereof include a double-sided corrugated cardboard sheet in which the top of a single-sided corrugated cardboard sheet is further bonded. Among these corrugated cardboard sheets, double-sided corrugated cardboard sheets are preferable from the viewpoints of workability, economy, durability and the like.

The packing sheet 1 includes a rectangular top panel 10 and a pair of bottom panels 20 (first bottom panel 20a and second bottom panel) extending from a pair of first side edges 11 facing each other of the top panel 10. 20b) and. As shown in FIG. 3, the pair of bottom panels 20 are folded back toward the lower surface side of the top panel 10, and the tip portions are connected to each other to form a flat cylinder portion S1 together with the top panel 10.

Further, the packing sheet 1 extends from a pair of second side edges 12 facing each other of the top panel 10 and is bent upward by a pair of upper support panels 30 (first upper support panel 30a and second upper support panel). 30b) and a pair of lower support panels 40 (first lower support) that extend from the pair of side edges 21 of the bottom panel 20 and are bent downward with the bottom panel 20 folded downward of the top panel 10. A panel 40a and a second lower support panel 40b) are provided. As shown in FIG. 1, the first upper support panel 30a and the first lower support panel 40a are on the ipsilateral edge side of the bottom panel 20 with respect to the top panel 10 and the bottom panel 20 that are connected to each other. The upper support panel 30b and the second lower support panel 40b are on the ipsilateral veranda of the bottom panel 20. Further, since there are two bottom panels 20 and each of them has a pair of lower support panels 40, the first lower support panel 40a and the second lower support panel 40b are located on the ipsilateral edge side of the bottom panel 20, respectively. There are two each.

The packing sheet 1 has two pairs of connecting pieces 50 (first upper support) folded on the outer surface side of the upper support panel 30 and the lower support panel 40 so as to close at least a part of the end opening of the flat cylinder portion S1. The first connection piece 50a and the second connection piece 50b) provided on the panel 30a side and the second upper support panel 30b side, respectively, are further provided.

Further, the packing sheet 1 includes a pair of tongue pieces 60 extending from the tip side of the pair of upper support panels 30 (a first tongue piece 60a extending from the first upper support panel 30a and a second upper support panel 30b). A second tongue piece 60b) extending from is further provided.

<Top panel>
The top panel 10 has a rectangular shape as described above, and has the same size as the bottom panel of the outer box P.

The top panel 10 preferably has an open window 13. By providing the window 13 opened in the top panel 10 in this way, it is possible to easily confirm the type and storage state of the content X protected by the packing member S formed by assembling the packing sheet 1. it can.

The shape of the window 13 is not particularly limited, but can be, for example, a circular shape having a relatively small effect on the strength of the flat cylinder portion S1. Further, the size of the window 13 is appropriately determined within a range in which the strength of the flat cylinder portion S1 is not insufficient.

In the packing sheet 1, as shown in FIG. 1, the top panel 10 has a first mountain fold line portion 14 and a second mountain fold line portion 15. The first mountain fold line portion 14 is composed of a pair of mountain fold lines 14a parallel to the pair of first side edges 11 of the top panel 10 and a pair of mountain fold lines 14b parallel to the pair of second side edges 12. It is rectangular. The second mountain fold line portion 15 is composed of four corners of the top panel 10 and four mountain fold lines 15a connecting the corners of the first mountain fold line portion 14 adjacent to each corner. Further, the pair of bottom panels 20 have a third mountain fold line portion 22 having the same shape as the first mountain fold line portion 14 and a fourth mountain fold portion having the same shape as the second mountain fold line portion 15 in a plan view in the assembled state. It has a wire portion 23.

In the packing sheet 1, the first mountain fold line portion 14 to the fourth mountain fold line portion 23 are mountain-folded to form a flat surface panel 10 and a bottom panel 20 as shown in FIG. The central portion of the tubular portion S1 can be easily inflated. Therefore, even if the content X is thick, it can be protected. In FIG. 4, the content X is not shown.

The first side edge 11 that defines the boundary with the bottom panel 20 and the second side edge 12 that defines the boundary with the upper support panel 30 are preferably formed by easily bendable lines. As the easily bendable line, a ruled line in which one side of the sheet material is pressed, or a lead ruled line in which a plurality of cutting lines and a plurality of ruled lines are alternately continuous can be adopted. Since the bottom panel 20 is bent toward the lower surface side, it is preferable that the first side edge 11 is reinforced on the lower surface side, and the upper support panel 30 is bent toward the upper surface side, so that the second side edge 12 is the upper surface. It should be pushed to the side.

<Bottom panel>
The pair of bottom panels 20 (first bottom panel 20a and second bottom panel 20b) extend from the first side edge 11 with the same width as the first side edge 11 of the top panel 10.

As described above, the first bottom panel 20a and the second bottom panel 20b are folded back toward the lower surface side of the top panel 10, and the tip portions are connected to each other. Specifically, the sum of the lengths of the side edge 21 of the first bottom panel 20a and the side edge 21 of the second bottom panel 20b is larger than the length of the second side edge 12 of the top panel 10. As shown in FIG. 4, when folded back toward the lower surface side of the top panel 10, the tip portions of the first bottom surface panel 20a and the second bottom surface panel 20b are configured to overlap each other. The flat cylinder portion S1 is formed by connecting the overlapping portions with, for example, an adhesive or a sealing tape. The side edge 21 of the first bottom panel 20a and the side edge 21 of the second bottom panel 20b may be different, but are preferably the same length from the viewpoint of ease of assembly.

The side edge 21 that defines the boundary with the lower support panel 40 may be formed of an easily bendable line, similarly to the first side edge 11 and the second side edge 12 of the top panel 10. Since the lower support panel 40 is bent downward with the bottom panel 20 folded downward below the top panel 10, it is preferable that the side edge 21 is reinforced toward the upper surface side.

<Upper support panel>
In the upper support panel 30 (first upper support panel 30a and second upper support panel 30b), a pair of side edges 31 are inclined inward in the width direction from the proximal end side to the distal end side. Specifically, as shown in FIG. 1, the side edge 31 is inclined at an angle of 45 degrees with respect to the first side edge 11 starting from the end point of the first side edge 11 of the top panel 10. .. Further, the tip edge 32 of the upper support panel 30 is parallel to the second side edge 12 of the top panel 10. That is, the shape of the upper support panel 30 is an isosceles trapezoid with the tip edge 32 as the upper base.

<Lower support panel>
The lower support panel 40 (first lower support panel 40a and second lower support panel 40b) is a side edge (first side edge 41) facing the side edge 31 of the upper support panel 30 of the lower support panel 40. Is inclined inward in the width direction from the base end side to the tip end side. Specifically, as shown in FIG. 1, the first side edge 41 is inclined at an angle of 45 degrees with respect to the side edge 21 starting from the end point of the side edge 21 of the bottom panel 20 on the top surface panel 10 side. are doing. The other side edge (second side edge 42) of the lower support panel 40 is not particularly limited, but extends perpendicularly to the side edge 21 from the other end point of the side edge 21 of the bottom panel 20, for example. Further, the tip edge 43 of the lower support panel 40 is parallel to the side edge 21 of the bottom panel 20. That is, the shape of the lower support panel 40 is a trapezoid with the tip edge 43 as the upper base. As shown in FIG. 1, the tip of the lower support panel 40 on the second side edge 42 side may be squared.

It is preferable that the extension lengths of the lower support panels 40 extending from the ipsilateral edge side are equal. That is, it is preferable that the two first lower support panels 40a located so as to sandwich the first upper support panel 30a have the same extension length, and the two first lower support panels 30b located so as to sandwich the second upper support panel 30b. 2 It is preferable that the extension lengths of the lower support panels 40b are equal. The two first lower support panels 40a and the two second lower support panels 40b are folded back together with the first bottom panel 20a and the second bottom panel 20b toward the lower surface side of the top panel 10, respectively, and have a tip portion. They are connected to each other. Therefore, by making the extension lengths of the lower support panels 40 extending from the ipsilateral edge side equal to each other, it is possible to prevent a step from being generated in the lower support panel 40 after connection. As will be described later, since the flat tubular portion S1 formed by the top panel 10 and the bottom panel 20 is supported from below by the lower support panel 40, the extension lengths of the lower support panels 40 are made equal. As a result, it is easy to keep the flat cylinder portion S1 horizontal.

<Tongue piece>
The shape of the tongue piece 60 is not particularly limited, but can be, for example, a rectangular shape with rounded corners on the tip side, as shown in FIG.

The width of the tongue piece 60 (the length in the direction perpendicular to the extending direction) is not particularly limited, and can be, for example, 30% or more and 100% or less with respect to the length of the tip edge 32 of the upper support panel 30.

As shown in FIG. 2, the tongue piece 60 (the first tongue piece 60a and the second tongue piece 60b) is located on the upper side when the packing member S formed by assembling the packing sheet 1 is housed in the outer box P. To do. Therefore, by grasping and pulling out the tongue piece 60, the packing member S housed in the outer box P can be easily taken out.

The tongue piece 60 may have an easy bend line 61 that defines a boundary with the upper support panel 30. By configuring the tongue piece 60 to have an easily bendable line 61, it is possible to easily grasp the tongue piece 60 at the time of taking out, and the tongue piece 60 can be configured to be in contact with the top surface of the sealed outer box P in a bent state. , The vertical movement of the packing member S can be suppressed more reliably.

The easy-to-bend line 61 can be formed in the same manner as the first side edge 11 and the second side edge 12 of the top panel 10. Since the tongue piece 60 is preferably bent toward the top panel 10 in the state of being assembled to the packing member S, the easy-to-bend line 61 is preferably configured so as to be squeezed toward the upper surface side of the tongue piece 60. ..

(Relationship between upper support panel, lower support panel and extension length of tongue piece)
As shown in FIG. 3, the upper support panel 30, the lower support panel 40, and the tongue piece 60 are assembled in the packing member S so that the extending direction is orthogonal to the top panel 10.

At this time, the sum of the extension length of the upper support panel 30 and the extension length of the lower support panel 40 (height of the support panel) is set to be equal to or less than the height of the outer box P. If the height of the support panel exceeds the height of the outer box P, the upper support panel 30 and the lower support panel 40 may interfere with the upper lid flap P1 of the outer box P, and the outer box P may not be sealed. is there. On the other hand, the lower limit of the height of the support panel is preferably 90%, more preferably 95% of the height of the outer box P. If the height of the support panel is less than the above lower limit, the packing member S may not be sufficiently fixed in the outer box P.

The sum of the extension length of the upper support panel 30, the extension length of the lower support panel 40, and the extension length of the tongue piece 60 (maximum height of the packing member S) is equal to or greater than the height of the outer box P. It is preferable to do so. If the maximum height of the packing member S is less than the height of the outer box P, the packing member S may not be sufficiently fixed in the outer box P. The portion of the packing member S protruding upward from the outer box P is composed of the tongue piece 60. When the packing member S is housed in the outer box P and sealed, the tongue piece 60 can be bent toward the top panel 10 side to prevent interference with the upper lid flap P1 of the outer box P. Further, the tongue piece 60 bent in this way abuts on the upper lid flap P1 of the outer box P by its repulsive force, and the movement of the packing member S in the outer box P can be further suppressed.

<Connection piece>
The connection piece 50 (first connection piece 50a and second connection piece 50b) connects the opposite side edges of the upper support panel 30 and the lower support panel 40 to each other. Specifically, as shown in FIG. 1, the first connection piece 50a has a first side edge 41 of the first lower support panel 40a and a first upper support panel facing the first lower support panel 40a. The side edge 31 of the 30a, the end point on the tip end side of the side edge 31 of the first upper support panel 30a, and the end point on the tip end side of the first side edge 41 of the first lower support panel 40a extend outward. It is defined by a pair of side edges and a tip edge connecting the tips of the pair of side edges. Since two first lower support panels 40a are provided on both sides of the first upper support panel 30a, the first upper support panel 50a also corresponds to each first lower support panel 40a. It is provided on both sides of 30a. The same applies to the second connection piece 50b.

The connection piece 50 shown in FIG. 1 shows a case where the pair of side edges extend from the end points of the side edges 31 of the upper support panel 30 and the end points of the first side edge 41 of the lower support panel 40. However, it is also possible to adopt a configuration in which the pair of side edges extend from an intermediate position of the side edge 31 of the upper support panel 30 and an intermediate position of the first side edge 41 of the lower support panel 40.

The connection piece 50 is bent at the side edge 31 of the upper support panel 30 and the first side edge 41 of the lower support panel 40 that define the boundary of the connection piece 50 when assembled into the packing member S, as shown in FIG. The end opening of the flat cylinder portion S1 is closed. Therefore, the side edge 31 of the upper support panel 30 and the first side edge 41 of the lower support panel 40 that define the boundary of the connection piece 50 are the same as the first side edge 11 and the second side edge 12 of the top panel 10. In addition, it is preferable that the line is easily bent. From the bending direction of the connecting piece 50, it is preferable that these easy-to-bend lines are pressed toward the lower surface side.

As the lower limit of the ratio (L1 / L) of the length of the connecting piece 50 closing the end opening of the flat cylinder portion S1 (L1 in FIG. 3) to the length of the end opening of the flat cylinder portion S1 (L in FIG. 3). Is preferably 0.3, and more preferably 0.35. On the other hand, the upper limit of L1 / L is preferably 0.5, more preferably 0.45. If the L1 / L is less than the lower limit, the top panel 10 and the bottom panel 20 are likely to be separated from each other, and the portion of the end opening that is not blocked by the connecting piece 50 becomes long. There is a risk that the X will be difficult to fix to the packing member S, or that the X will slip out of the end opening. On the contrary, if the above L1 / L exceeds the above upper limit, interference such as overlapping of the pair of connection pieces 50 may occur.

As will be described later, the connection piece 50 is temporarily folded back on the extension line of the first side edge 11 of the top surface panel 10 when the pair of bottom panels 20 are folded back to the lower surface side of the top surface panel 10. Therefore, the connection piece 50 may have an easy-to-bend line similar to the first side edge 11 of the top panel 10 on the extension line of the first side edge 11 of the top panel 10.

<How to use the packing sheet>
The packing sheet 1 is assembled and used in the packing member S. The procedure will be described below.

(Folding process)
First, the pair of bottom panels 20 of the packing sheet 1 are folded back toward the bottom surface of the top panel 10.

At this time, the pair of lower support panels 40 extending from the bottom panel 20 are also arranged on the lower surface side of the top panel 10. Further, in the folding step, as shown in FIG. 5, the connection piece 50 is also temporarily folded back on the extension line of the first side edge 11 of the top panel 10.

The pair of folded bottom panels 20 connect the tip portions to each other. Further, the tip portions of the lower support panel 40 are also connected to each other in the same manner. Regarding the lower support panel 40, a pair of first lower support panels 40a are connected to each other, and a pair of second lower support panels 40b are connected to each other. Adhesives or sealing tape can be used for this connection.

By this folding process, the flat cylinder portion S1 is formed by the top panel 10 and the bottom panel 20.

(Insert process)
Next, as shown in FIG. 5, the content X is inserted into the flat cylinder portion S1.

The content X can be inserted through the opening at one end of the flat cylinder portion S1. When the content X is thick, the mountain fold lines of the first mountain fold line portion 14 to the fourth mountain fold line portion 23 are bent according to the thickness of the content X to form the internal space of the flat cylinder portion S1. Adjust the height.

This insertion step can also be performed after closing one end opening in the closing step described later.

(Closing process)
In this step, the upper support panel 30 and the lower support panel 40 are erected perpendicularly to the top panel 10, and the end openings on both sides of the flat cylinder portion S1 are closed by the connecting piece 50.

The upper support panel 30 extending from the top panel 10 is bent upward. On the other hand, the lower support panel 40 extending from the bottom panel 20 is bent downward. Further, as shown in FIG. 3, the connection piece 50 is folded over the bent upper support panel 30 and the lower support panel 40 so as to close at least a part of the end opening of the flat cylinder portion S1.

By performing the above-mentioned bending and folding for each of the end openings on both sides of the flat cylinder portion S1, the end openings of the flat cylinder portion S1 are closed by the connecting piece 50, and the upper support panel 30 and the lower side are closed. The support panels 40 are erected in the vertical direction. In this way, the packing member S is assembled.

(Storage process)
Finally, the packing member S that is assembled and contains the contents X is housed in the outer box P.

The packing member S is housed in the outer box P so that the upper support panel 30 side is on the upper lid flap P1 side, and the upper lid flap P1 is sealed.

<Advantage>
The packing sheet 1 is held by sandwiching the content X between the top panel 10 and the bottom panel 20. Further, in the packing sheet 1, the connection piece 50 is folded so as to close a part of the opening of the flat cylinder portion S1 formed by the top panel 10 and the bottom panel 20. Since it becomes difficult for the top panel 10 and the bottom panel 20 to be separated from each other due to the folding of the connection piece 50, the width of the top panel 10 and the bottom panel 20 of the packing sheet 1 is larger than the width of the content X. Even if it is wide, the content X can be sandwiched. Therefore, in the packing sheet 1, the widths of the top panel 10 and the bottom panel 20 can be determined regardless of the width of the contents X, so that the outer box P in which the packing member S formed by assembling the packing sheet 1 is inserted. The size is not restricted by the width of the content X. Further, in the packing sheet 1, the upper support panel 30 and the lower support panel 40 are exclusively used to suppress the vertical movement of the packing member S, and have an extension length of the upper support panel 30 and the lower support panel 40. It is not necessary to match the sum with the vertical length of the side panel of the outer box P with high accuracy. Therefore, since the packing member S formed by assembling the packing sheet 1 can also be used for the box to be opened on the top surface side, the structure of the outer box P is not limited. Therefore, the packing sheet 1 can be assembled into a packing member S in which damage to the contents X can be suppressed even if the contents X are disk-shaped, and the size and structure of the outer box P to be packed are not restricted. ..

[Other Embodiments]
The above embodiment does not limit the configuration of the present invention. Therefore, it is possible to omit, replace or add the components of each part of the embodiment based on the description of the present specification and the common general technical knowledge, and all of them are construed to belong to the scope of the present invention. Should be.

In the above embodiment, the case where the packing sheet includes a pair of tongue pieces has been described, but the tongue pieces may be provided on only one side. A packing sheet without a tongue piece is also an object of the present invention.

In the above embodiment, the case where the top panel has the first mountain fold line portion and the second mountain fold line portion and the bottom panel has the third mountain fold line portion and the fourth mountain fold line portion has been described. However, it is also an object of the present invention to have a configuration in which only one of the top panel and the bottom panel has a mountain fold line portion, and a configuration in which both the top panel and the bottom panel do not have a mountain fold line portion.

As described above, the packing sheet can be assembled into a packing member that can prevent damage to the contents even if it is a disc-shaped content, and the size and structure of the outer box to be packed are not restricted.

1 Packing sheet 10 Top panel 11 1st side edge 12 2nd side edge 13 Window 14 1st mountain fold line 14a, 14b Mountain fold line 15 2nd mountain fold line 15a Mountain fold line 20 Bottom panel 20a 1st Bottom panel 20b 2nd bottom panel 21 Side edge 22 3rd mountain fold line 23 4th mountain fold 30 Upper support panel 30a 1st upper support panel 30b 2nd upper support panel 31 Side edge 32 Tip edge 40 Lower support Panel 40a First lower support panel 40b Second lower support panel 41 First side edge 42 Second side edge 43 Tip edge 50 Connection piece 50a First connection piece 50b Second connection piece 60 Tongue piece 60a First tongue piece 60b 2nd tongue piece 61 Easy-to-bend line S Packing member S1 Flat tube P Outer box P1 Top lid flap X Contents

Claims (5)

A packing sheet that is formed from a single sheet material and can be assembled into a packing member that is housed in an outer box and protects the contents.
With a rectangular top panel,
A pair of bottom panels that extend from the pair of first side edges of the top panel facing each other, are folded back to the lower surface side of the top panel, and the tips are connected to each other to form a flat cylinder portion together with the top panel. When,
A pair of upper support panels that extend from the pair of opposite second side edges of the top panel and are bent upward.
It is provided with a pair of lower support panels that extend from the pair of side edges of the bottom panel and are folded downward while the bottom panel is folded down below the top panel.
The pair of side edges of the upper support panel are inclined inward in the width direction from the base end side to the tip end side.
The side edge of the lower support panel facing the side edge of the upper support panel is inclined inward in the width direction from the base end side to the tip end side.
The upper support panel and the opposite side edges of the lower support panel are connected to each other, and folded toward the outer surface side of the upper support panel and the lower support panel so as to close at least a part of the end opening of the flat cylinder portion. With two pairs of stacking pieces ,
The top panel has a rectangular first mountain fold line portion composed of a pair of mountain fold lines parallel to the pair of first side edges and a pair of mountain fold lines parallel to the pair of second side edges. It has four corners of the top panel and a second mountain fold line composed of four mountain fold lines connecting the corners of the first mountain fold adjacent to each corner.
The pair of bottom panels have a third mountain fold line portion having the same shape as the first mountain fold line portion and a fourth mountain fold line portion having the same shape as the second mountain fold line portion in a plan view in an assembled state. packing sheet having a. The packing sheet according to claim 1, wherein the lower support panels extending from the ipsilateral edge side of the bottom panel have the same extension length. Further provided with a pair of tongue pieces extending from the tip side of the pair of upper support panels,
The packing sheet according to claim 1 or 2, wherein the tongue piece has an easy-to-fold line that defines a boundary with the upper support panel. Claim 1 , claim 2 or the ratio of the length of the connecting piece to close the end opening of the flat cylinder portion to the length of the end opening of the flat cylinder portion is 0.3 or more and 0.5 or less. The packing sheet according to claim 3 . The packing sheet according to any one of claims 1 to 4 , wherein the top panel has an open window.

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