Packaging material, and packing material

Abstract

To provide a packaging material which can effectively hold a packed object in a boxed body, irrespective of a shape of the packed object, even with a simple structure.SOLUTION: A packaging material has a central surface part 5 which exists between a first side surface part 6 and a second side surface part 7, is connected to the first side surface part 6 through a first ruled line 2, and is connected to the second side surface part 7 through a second ruled line 3. The packaging material is configured of a sheet which has a function elastically bending the central surface part 5, when exerting external force in a direction reducing a distance S2 between the first ruled line 2 and the second ruled line 3. The distance S2 between the first ruled line 2 and the second ruled line 3 is set larger than the distance L2 between inner surfaces of a side surface part Ba existing in an opposing position which configures a boxed body B in which a packaging material is stored. A slit 4 is formed so as to extend between the first ruled line 2 and the second ruled line 3, in the central surface part 5.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to an improvement in a packaging material that is used by being placed in a box together with an item to be packaged, and to packaging supplies including the same. [Background technology]

[0002] As interior packaging materials (packaging materials), bubble cushioning, polystyrene foam, etc. are used. These are placed inside the box together with the packaged items to prevent the packaged items from moving inside the box during transportation, etc. Summary of the Invention [Problem to be solved by the invention]

[0003] The main problem that this invention aims to solve is to provide a packaging material that has a simple structure yet can effectively hold the packaged items within the box body regardless of the shape of the packaged items, and a packaging material (packaging system) that includes the same. [Means for solving the problem]

[0004] In order to achieve the above object, the present invention provides, from a first viewpoint, a packaging material comprising: A first side portion; A second side portion; a central surface portion between the first side portion and the second side portion, the central surface portion being connected to the first side portion via a first score line and connected to the second side portion via a second score line; A packaging material including a sheet having a function of elastically bending the central surface portion when an external force is applied in a direction to reduce the distance between the first crease and the second crease, In a state where no external force is applied, the distance between the first crease and the second crease is set to be larger than the distance between the inner surfaces of the side portions in opposing positions that constitute a box body in which the packaging material is contained, A slit is formed in the central surface portion so as to extend between the first score line and the second score line.

[0005] When the packaging material is folded based on the first and second creases so that the first and second side portions protrude in the same direction relative to the central portion, and then the protruding ends of the first and second side portions are placed first in the box, the distance between the first and second creases is set to be greater than the distance between the inner surfaces of the side portions that are located in opposing positions and that constitute the box, so that the packaging material is placed in the box with the first and second side portions in contact with the inner surfaces of the side portions. As a result, an external force is continuously applied to the sheet in a direction that reduces the distance between the first and second creases, so that the central portion can be elastically deflected toward the bottom portion of the box, and the item to be packed can be elastically sandwiched between the central portion of the deflected packaging material and the bottom portion of the box. Since the central surface is divided by the slits, the central surface is deformed to follow the shape of the packaged object in a first direction along the continuous direction of the slits and presses each of the sections divided by the slits against the packaged object, while also deforming to follow the shape of the packaged object in a second direction perpendicular to the first direction and pressing each of the sections divided by the slits against the packaged object. This makes it possible to hold the packaged material in a manner that follows the shape of the packaged object.

[0006] One aspect of the present invention is that two or more slits are formed in the central surface portion with a gap between adjacent slits in a second direction perpendicular to a first direction along which the slits continue.

[0007] In one aspect of the present invention, the sheet has a rectangular outline with two length side edges along the first direction and two width side edges along the second direction, and the first ruled line and the second ruled line extend between the second length side edges.

[0008] In order to achieve the above object, the present invention provides, from a second viewpoint, a packaging material comprising the above packaging material and the above box body, The distance between the first score and the second score in the packaging material is set to be larger than the distance between the inner surfaces of the side portions in opposing positions that constitute the box body. Effect of the Invention

[0009] The packaging material of the present invention has a simple structure in which the first score line, the second score line, and the slits are formed in a sheet, yet it effectively holds the packaged items within the box body by conforming to the shape of the packaged items. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a plan view of a packaging material according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a front view of the packaging material. [Diagram 3] FIG. 3 is a right side view of the packaging material. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Diagram 5] FIG. 5 is a perspective view of the packaging material. [Figure 6] FIG. 6 is a perspective view showing the packaging material after folding along the first and second lines. [Figure 7] FIG. 7 is a perspective view of the packaging material when an external force is applied in a direction that reduces the distance between the first crease and the second crease from the state shown in FIG. [Figure 8] FIG. 8 is a perspective view showing the packaging material and a box body that is combined with the packaging material to form the packaging material, the packaging material being separated from the box body. [Figure 9] FIG. 9 is a cross-sectional view showing a state in which an object to be packed is packed with the packaging material and the box, in which the outline of the box is indicated by a dashed line and the outline of the object to be packed is indicated by a dashed double-dashed line. [Figure 10]FIG. 10 is a cross-sectional view showing a state in which an object to be packed is packed with the packaging material and the box body, and shows the state from a position different by 90 degrees from that of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] A typical embodiment of the present invention will be described below with reference to Figures 1 to 10. A packaging material 1 according to this embodiment is used by being placed in a box body B together with an item M to be packed.

[0012] The packaging material 1 is formed by forming first scores 2, second scores 3, and slits 4, which will be described later, in a sheet.

[0013] The sheet can be one that has the function of elastically bending the central surface portion 5 described below, typically a planar body with a certain degree of rigidity, specifically a sheet made of paperboard or synthetic resin.

[0014] The first score 2 and the second score 3 are formed on the sheet using a known method for facilitating folding of the sheet, such as a fold line (crease), half cut, lead crease, or perforation.

[0015] The packaging material 1 comprises a first side surface portion 6, a second side surface portion 7, and a central surface portion 5.

[0016] The central surface portion 5 is located between the first side surface portion 6 and the second side surface portion 7, and is connected to the first side surface portion 6 via a first score line 2, and is connected to the second side surface portion 7 via a second score line 3.

[0017] As shown in Figure 7, the sheet has the function of elastically bending the central surface portion 5 when an external force is applied in a direction that reduces the distance between the first score line 2 and the second score line 3. More specifically, when an external force is applied to the sheet as described above, the central surface portion 5 is deformed into a curved shape centered about the middle position in the first direction x described below, and when the application of the external force is stopped, the sheet elastically recovers to a flat shape and the distance between the first score 2 and the second score 3 returns to the distance before the application of the external force (see Figure 8).

[0018] The distance between the first crease 2 and the second crease 3 is set to be larger than the distance between the inner surfaces of the side portions Ba in opposing positions that constitute the box body B in which the packaging material 1 is housed. As a result, when the packaging material 1 is placed inside the box body B so that the first side surface portion 6 and the second side surface portion 7 protrude in the same direction relative to the central surface portion 5 after folding based on the first score line 2 and the second score line 3, and the first side surface portion 6 is introduced between a side surface portion Ba of the box body B described below and the item to be packaged M, and the second side surface portion 7 is introduced between a side surface portion Ba of the box body B described below and the item to be packaged M, an external force is continuously applied to the central surface portion 5 in a direction that reduces the distance between the first score line 2 and the second score line 3, making it possible to elastically press the central surface portion 5 against the item to be packaged M as described below (Figures 9 and 10).

[0019] Further, in the central surface portion 5, a slit 4 is formed extending between the first score 2 and the second score 3. In the illustrated example, two or more slits 4 are formed in the central surface portion 5 in a second direction y perpendicular to a first direction x along the continuous direction of the slits 4, with a gap between adjacent slits 4.

[0020] In addition, in the illustrated example, the packaging material 1 has a rectangular outline with two length side edges 8 along the first direction x and two width side edges 9 along the second direction y, and the first ruled line 2 and the second ruled line 3 extend between the second length side edges 8.

[0021] In the illustrated example, the packaging material 1 has a rectangular outline, and the central surface portion 5, the first side surface portion 6, and the second side surface portion 7 all have a quadrangular outline.

[0022] On the other hand, the box B has a rectangular bottom surface Bb and top surface Bc, two length-side side surfaces Ba extending between the length-side edge of the bottom surface Bb and the length-side edge of the top surface Bc, and two width-side side surfaces Ba extending between the width-side edge of the bottom surface Bb and the width-side edge of the top surface Bc. The box B has a hexahedral shape. In the illustrated example, the bottom surface Bb and the top surface Bc of the box B are each formed by a cover plate Bd connected to the side surfaces Ba via a ruled line. The item M to be packed is placed inside the box body B with the top surface Bc of the box body B open, and then the packaging material 1 is placed inside the box body B as described below.Then, the cover plate Bd is closed to form the top surface Bc, and the item is packed. The box body B and the packaging material 1 constitute a packaging material.

[0023] The dimension S1 (see Figure 8) of the width side portion 9 of the packaging material 1 is typically set to be substantially equal to the distance L1 (see Figure 8) between the two length side portions Ba of the box body B, or slightly smaller than this distance L1.

[0024] In the second direction y, the dimensions of the central surface portion 5, the first side surface portion 6, and the second side surface portion 7 are the same. In the first direction x, the dimension of the central surface portion 5, i.e., the distance S2 between the first line 2 and the second line 3 (see Figure 8), is greater than the distance L2 (see Figure 8) between the side portions Ba on the two width sides of the box body B. In addition, the dimension S3 (see Figure 8) between the width side edge portion 9 that forms the protruding end of the first side surface portion 6 and the first line 2, and the dimension S3 (see Figure 8) between the width side edge portion 9 that forms the protruding end of the second side surface portion 7 and the second line 3 are typically set to a dimension that is substantially equal to or slightly smaller than the distance L3 between the top surface portion Bc and the bottom surface portion Bb of the box body B.

[0025] In the illustrated example, four slits 4 are formed in the central surface portion 5, thereby dividing the central surface portion 5 into five portions 5a in the second direction y. Each portion 5a is long in the first direction x and has a strip shape with a width in the second direction y. In the illustrated example, the width dimension in the second direction y of each portion 5a is substantially the same. The number of slits 4, the distance between adjacent slits 4, and the width of the slits 4 may be appropriately changed as necessary.

[0026] In addition, in the illustrated example, the slit 4 is configured so that the width of the slit 4 gradually increases as it approaches the middle position of the central surface portion 5 in the first direction x, and the width of the slit 4 gradually decreases as it approaches the end of the slit 4 that contacts the first ruled line 2 and the second ruled line 3. In the illustrated example, when the sheet that becomes the packaging material 1 is punched out from the base sheet such as paperboard, the shape of the slits 4 is utilized to facilitate removal of the remaining pieces of the base sheet from within the slits 4 using a pin-shaped object. Also, adjacent portions 5a sandwiching the slits 4 do not come into contact with each other, but only come into contact with the item M to be packaged, and are positioned at an appropriate level following the shape of the item M to be packaged.

[0027] When the central surface portion 5 is folded based on the first score line 2 and the second score line 3 (a mountain fold in the illustrated orientation), and the packaging material 1 is then placed into box body B with the protruding ends 6a, 7a of the first side surface portion 6 and the second side surface portion 7 facing forward, the distance S2 between the first score line 2 and the second score line 3 is set to be greater than the distance L2 between the inner surfaces of the side portions Ba in opposing positions that constitute box body B, in the illustrated example, the inner surfaces of the width side portions Ba, so that the packaging material 1 is placed into box body B with the first side surface portion 6 and the second side surface portion 7 in contact with the inner surface of the width side portion Ba (Figure 9). As a result, an external force continues to act on the central surface portion 5 in a direction that reduces the distance S2 between the first score 2 and the second score 3, making it possible to elastically bend the central surface portion 5 toward the bottom surface portion Bb of the box body B, and the item M to be packed can be elastically clamped between the central surface portion 5 of the bent packaging material 1 and the bottom surface portion Bb of the box body B. Since the central surface portion 5 is divided by the slits 4, the central surface portion 5 is deformed to follow the shape of the packaged object M in the first direction x along the continuous direction of the slits 4, and presses each of the portions 5a divided by the slits 4 against the packaged object M (FIG. 9), and also is deformed to follow the shape of the packaged object M in the second direction y perpendicular to the first direction x, and presses each of the portions 5a divided by the slits 4 against the packaged object M (FIG. 10). This makes it possible to hold the packaged material 1 in a manner that follows the shape of the packaged object M. In other words, the packaging material 1 in this embodiment has a simple structure in which the first score 2, the second score 3, and the slit 4 are formed in the sheet, yet effectively holds the packaged item M within the box body B by conforming to the shape of the packaged item M.

[0028] Of course, the present invention is not limited to the above-described embodiments, but includes all embodiments that can achieve the object of the present invention. [Explanation of symbols]

[0029] B box body Ba side face Bb bottom part Bc upper face Bd cover M Packing x 1st direction y 2nd direction S1 inch method S2 Distance S3 inch method L1, L2, L3 distance 1 box packaging material 2 1st thread 3. Second thread 4 スリット 5 Central face Section 5a 6 1st side face 6a protruding end 7 2nd lateral face 7a protruding end 8 long sides 9 side panels

Claims

1. A first side portion; A second side portion; a central surface portion between the first side surface portion and the second side surface portion, the central surface portion being connected to the first side surface portion via a first score line and being connected to the second side surface portion via a second score line; A packaging material including a sheet having a function of elastically bending the central surface portion when an external force is applied in a direction to reduce the distance between the first crease and the second crease, The distance between the first crease and the second crease is set to be larger than the distance between inner surfaces of side portions in opposing positions that constitute a box body in which the packaging material is contained, A packaging material having a slit formed in the central surface portion so as to extend between the first score and the second score.

2. The packaging material according to claim 1, wherein two or more slits are formed in the central surface portion with a gap between adjacent slits in a second direction perpendicular to a first direction along which the slits continue.

3. 3. The packaging material according to claim 2, wherein the sheet has a rectangular outline with two length side edges along the first direction and two width side edges along the second direction, and the first and second scores extend between the second length side edges.

4. The packaging material according to any one of claims 1 to 3 and the box body, A packaging material, in which a distance between the first score line and the second score line in the packaging material is set to be greater than a distance between inner surfaces of side portions in opposing positions that constitute the box body.

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