Packaging material for holding items and method for assembling same

Abstract

To provide a packaging material for article holding in which a holding structure can be assembled at the same time as valley-folding processing by devising the holding structure for standing obliquely and a constitution of a valley-folding portion, and a width of an article holding portion is wide, and to provide an assembly method of the same.SOLUTION: A packaging material 1 for article holding formed from a sheet member 2 includes: opposing side walls 21, 22; a flat surface part 25 on which an article is placed; and an article holding structure 23 standing obliquely from one side wall to the other side wall striding between the side walls. At the sheet member, a notch 2c, and folds 31-36 are provided. The article holding structure 23 is constituted by valley-folding the fold 33 at a lower portion of the one side wall 21, and mountain-folding the fold 32 at the other side wall 22 on an extension line of the fold. The flat surface part 25 is constituted by valley-folding the fold 35 above a lower end part of the article holding structure 23 of the one side wall 21, and valley-folding the fold 36 at the other side wall 22.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a packaging material for holding articles, which is used when storing articles in a packaging box, and to a method for assembling the same. [Background technology]

[0002] As this type of packaging material for holding articles, a sheet member such as cardboard is folded to form a holding portion for holding articles. For example, as shown in Fig. 9, a cut sheet member 100 is folded multiple times to form side walls 101 consisting of multiple sides, and adjacent side walls 101 are folded inward near the lower corners 102 to form an article holding structure 103 (hereinafter, referred to as a holding structure). However, to form such a holding structure 103, each side must be folded six times. In addition, since the folding direction of the holding structure 103 is different from the folding direction of the side walls, there is a problem with the ease of assembly.

[0003] Another known method is to cut a sheet member and fold the surrounding area in a valley fold to form a diagonally raised holding structure, and to hold the side end surface of an article in three dimensions with the end surface of this holding structure (see, for example, Patent Document 1, especially Figures 6 and 7). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5482355 Summary of the Invention [Problem to be solved by the invention]

[0005] In the assembly of such a holding structure, it is usually necessary to perform the work of making the valley fold and the work of processing the holding structure separately. That is, in the case of the one described in Patent Document 1, the valley fold at one end of the lower side of the holding structure that is raised diagonally and the valley fold at the rising edge of the side wall are on the same line, and these two folds must be made at the same time. Also, due to the dimensions, there is a valley fold in the middle of the holding structure that is raised diagonally, and this fold must be made separately from the two folds. Also, the width of the article holding portion of the holding structure that is raised diagonally is short.

[0006] To provide a packaging material for holding articles, which has a long article holding portion and can be easily formed by devising a structure for holding the articles at an angle and a structure for the valley fold, and a method for assembling the same, by which the holding structure can be assembled simultaneously with the valley fold processing. [Means for solving the problem]

[0007] The present invention provides a packaging material for holding an article, which is formed from a flat rectangular sheet member and holds an article by abutting a part of the article to be packaged, A pair of side walls facing each other at a predetermined interval; a flat surface portion on which an article is placed, the flat surface portion connecting the pair of side walls; adjacent to the flat portion, extending from one side wall to the other side wall across the pair of side walls; Without any bends in the middle An article holding structure that rises obliquely; The sheet member is provided with a cut for forming the side wall, the article holding structure, and the planar portion across the pair of side walls, and a plurality of folds perpendicular to the cuts; The article holding structure is formed by folding the fold at the lower portion of the one side wall in a valley to form a lower end portion, and folding the fold at the other side wall in a mountain to form an upper end portion, The planar portion is formed by folding a fold on one of the side walls above a lower end of the article holding structure, and folding a fold on the other side wall, No fold is provided in the portion that becomes the side wall in the region of the extension of the former fold, An end face of the item holding structure located above the planar portion abuts against a part of an item placed on the planar portion to form an item holding portion.

[0008] The present invention also provides a method for assembling a packaging material for holding an article, which is formed from a flat rectangular sheet member and holds an article by abutting a part of the article to be packaged, comprising the steps of: The packaging material is A pair of side walls facing each other at a predetermined interval; a flat surface portion on which an article is placed, the flat surface portion connecting the pair of side walls; adjacent to the flat portion, extending from one side wall to the other side wall across the pair of side walls; Without any bends in the middle An article holding structure that rises obliquely; The sheet member is provided with a cut for forming the side wall, the article holding structure and the flat surface portion across the pair of side walls, and a plurality of folds perpendicular to the cuts; The article holding structure is formed by folding a fold line in a lower portion of one of the side walls in a valley direction to form a lower end portion, and folding a fold line in the other side wall in a mountain direction to form an upper end portion, The planar portion is formed by folding a fold on one of the side walls above a lower end of the article holding structure, and folding a fold on the other side wall, No fold is provided in the portion that becomes the side wall in the region of the extension of the former fold, The article holding structure is assembled so that an end face located above the planar portion abuts against a part of an article placed on the planar portion to form an article holding portion. Effect of the Invention

[0009] According to the present invention, the number of folding points required to form the obliquely standing holding structure can be reduced, and the folding direction is the same as the folding direction for forming the side walls, eliminating the need to turn the packaging material upside down or push it up from the back when folding, improving workability. Also, a product with a long article holding portion can be obtained. [Brief description of the drawings]

[0010] [Figure 1] 1 is a perspective view of a packaging material for holding items according to an embodiment of the present invention; [Diagram 2] FIG. 4 is a development view of a sheet member of the packaging material before assembly. [Diagram 3] FIG. 4 is a plan view illustrating a method of assembling the packaging material. [Figure 4] FIG. 4 is a perspective view showing the assembled state of the packaging material. [Diagram 5] FIG. 4 is a side view showing a comparison between the above packaging material and a conventional product. [Figure 6] FIG. 4 is a side view showing a comparison between the above packaging material and other conventional products. [Figure 7] FIG. 3 is a plan dimensional view of the above packaging material in an unfolded state. [Figure 8] FIG. 2 is a side dimensional diagram of the above packaging material in an assembled state. [Figure 9] FIG. 13 is a perspective view of a conventional packaging material in the process of being assembled. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] A packaging material for holding an article according to one embodiment of the present invention and an assembly method thereof will be described below with reference to the drawings. FIG. 1 shows a packaging material 1 for holding an article. The packaging material 1 holds an article to be packed in a packaging box, such as a portable radio, by abutting it against a part of the article, and is formed from a flat rectangular sheet member 2 made of cardboard or the like. The sheet member 2 is cut to a predetermined size, and assembled in a predetermined procedure after being processed with predetermined cuts, lines that will become folds, perforations, etc. It is desirable for the packaging material 1 to have an overall outer shape of a rectangular parallelepiped so that it can be easily stored in a packaging box.

[0012] The packaging material 1 has a pair of side walls 21, 22 facing each other with a predetermined gap therebetween, an article holding structure 23, 24 rising obliquely from one side wall 21 (or 22) toward the other side wall 22 (or 21), and a flat portion 25 connecting the pair of side walls 21, 22 and serving as an article placement surface. In this embodiment, the side walls 21, 22 have outer walls 26, 27 on both outsides. The sheet member 2 has cuts for forming the side walls 21, 22, the article holding structures 23, 24, and the flat portion 25 across the pair of side walls 21, 22, and a plurality of folds perpendicular to the cuts. Details of the cuts and folds will be described in FIG. 2.

[0013] The article holding structures 23, 24 are provided adjacent to the flat portion 25 and straddle the pair of side walls 21, 22. The article holding structures 23, 24 have rising slopes, and the range of the end faces 23a, 24a located above the flat portion 25 abuts against a part (side surface) of an article placed on the flat portion 25 to form an article holding portion. The space surrounded by the pair of side walls 21, 22, the article holding structures 23, 24, and the flat portion 25 forms a storage space S for storing articles. As the flat portion 25 is located higher than the lower ends of the side walls 21, 22, it can hold articles in a floating state.

[0014] In this embodiment, the article holding structures 23, 24 are provided on the front and rear sides of the flat portion 25 in plan view, respectively, and are formed so that their rising slopes are staggered. Of the (inner) end faces 23a, 24a of the rising slopes of the article holding structures 23, 24, the areas located above the flat portion 25 become article holding parts, which are located at diagonal positions in plan view. This configuration can prevent the article placed on the flat portion 25 from rotating.

[0015] The article holding structure 23 (24) is formed by making a valley fold at a fold 33 (34) at the lower portion of one side wall 21 (22) to form a lower end, and a mountain fold 32a (31a) on an extension line of the fold 32 (31) at the upper end of the other side wall 22 (21) to form an upper end. The flat portion 25 is formed by making a valley fold at a fold 35 (36) at one side wall 21 (22) above the lower end of the article holding structure 23 (24), and by making a valley fold at a fold 36 (35) at the other side wall 22 (21).

[0016] In this embodiment, the pair of side walls 21, 22 have their upper ends formed with creases 31, 32, and are each folded in a mountain fold to have outer walls 26, 27 on both outside sides, and the lower ends of these outer walls 26, 27 extend downward beyond the lower ends of the side walls 21, 22 to form the legs of the packaging material 1.

[0017] FIG. 2 shows the sheet member 2 before assembly of the packaging material 1. When corrugated cardboard is used as the sheet member 2, the grain direction is the left-right direction in FIG. 2. The sheet member 2 is provided with regions that become a pair of side walls 21, 22, article holding structures 23, 24, a planar portion 25, and outer walls 26, 27. The side walls 21, 22 and the article holding structures 23, 24 are arranged point-symmetrically with respect to the center of the planar portion 25. The outer walls 26, 27 are located on both the left and right sides of the pair of side walls 21, 22. A plurality of cuts 2c, 2d and folds 31-36 are provided to partition each of these regions.

[0018] The cuts 2c, 2d are provided approximately parallel to the upper and lower two sides 2a, 2a of the sheet member 2 in Fig. 2, inward from the two sides 2a, 2a by an amount equivalent to the width of the article holding structures 23, 24, and straddle the side walls 21, 22. In this embodiment, one (inner) end face 23a, 24a of the article holding structures 23, 24, which is a rising (or falling) slope, is formed by the cuts 2c, 2d, while the other end face uses the two sides 2a, 2a of the sheet member 2 themselves. Therefore, only one cut 2c (2d) is required to form one article holding structure 23 (24), which improves workability.

[0019] The folds 31 to 36 are all provided substantially parallel to the two sides 2b, 2b perpendicular to the two sides 2a, 2a of the sheet member 2, i.e., perpendicular to the cuts 2c, 2d. The folds 31, 32 are mountain folds at the portions that become the upper ends of the pair of side walls 21, 22, and their extensions become mountain folds 31a, 32a that become the upper ends of the article holding structures 23, 24. The folds 33, 34 are valley folds at the portions that become the lower ends of the side walls 21, 22, i.e., the lower ends of the article holding structures 23, 24. The folds 35, 36 are valley folds to form the planar portion 25, and are provided at positions farther from the folds 33, 34 in the left-right direction in FIG. 2.

[0020] FIG. 3 shows how to assemble the packaging material 1, and FIG. 4 shows the assembled packaging material 1 in a completed state. First, the two creases 33, 34 in the lower portions of the side walls 21, 22, i.e., the portions A, B of the sheet member 2 circled in FIG. 3, are simultaneously valley-folded. The creases 33, 34 are formed by pressing. The valley folds of the creases 33, 34 form the lower ends of the article holding structures 23, 24, and also form the valley folds of the creases 35, 36 in the flat portion 25. When performing the work by a person, the portions A, B of the packaging material 1 can be valley-folded while being held with both hands. Since there is only one fold per side, the number of assembly steps can be reduced, and since the fold direction is the same as the other portions, the work is easy.

[0021] Next, the sheet member 2 is mountain-folded at the two creases 31, 32 and the mountain folds 31a, 32a on their extensions. The creases 31, 32 are half-cut, and the mountain folds 31a, 32a are double-lined. The mountain folding at the creases 31, 32 and the mountain folds 31a, 32a forms the upper ends of the side walls 21, 22, the outer walls 26, 27, and the article holding structures 23, 24.

[0022] In this way, the packaging material 1 as shown in Fig. 4 can be assembled, which reduces the number of folding points required to form the article holding structures 23, 24 that rise diagonally, and also improves workability by making the folding direction the same as the folding direction for forming the side walls 21, 22, eliminating the need to turn the sheet member 2 over or push it up from the back when folding. Specifically, this provides the advantages of excellent workability in that the article holding structures 23, 24 can be easily assembled by only partially processing the valley fold structure, and furthermore, wide article holding structures 23, 24 can be formed, and also provides excellent recyclability since the packaging material 1 is formed only from sheet members 2 such as cardboard.

[0023] 5 is a diagram showing a comparison between a packaging material 1 of an embodiment (the present invention) and a conventional product (Patent Document 1). The diagram shows a state in which an article P (indicated by a two-dot chain line) is placed on the flat portion 25 of the packaging material 1. The holding structure 5P of the conventional product is configured to have a fold (54) that becomes the lowest end halfway up the diagonal rise, so the article holding portion of the holding structure 5P has a length L2. On the other hand, the article holding portion of the article holding structure 23 of the embodiment has a length L1, which is longer and wider than the conventional product, and the article is held stably.

[0024] Fig. 6 is a diagram showing a comparison between the packaging material 1 of the embodiment (the present invention) and other conventional products. The holding structure 5P of this conventional product is shaped so that there is no fold at the lowest end while it is being raised at an angle, but as a result, the lowest end of the holding structure 5P protrudes outside the side wall 21, which is a defect. The reason for this configuration will be explained below with reference to Figs. 7 and 8.

[0025] FIG. 7 shows the planar dimensions (length in the left-right direction in the figure) of the packaging material 1 of the embodiment in an unfolded state, and FIG. 8 shows the side dimensions of the packaging material 1 in an assembled state. The length between the fold 34 at the bottom end of the article holding structure 24 and the fold 36 between the side wall 22 of the flat portion 25 is a, The length of the flat portion 25 is b, If the length between the fold 31 at the top end of the side wall 21 and the fold 35 at the flat portion 25 of the side wall 21 is c, The length of the article holding structure 24 is b+ca, and in the assembled state, this has the relationship shown in Fig. 8. According to Pythagoras' theorem, if a is a small value, then an article holding structure 24 without any folds will have its bottom end protruding outside the side wall 21, like the conventional holding structure 5P in Fig. 6.

[0026] In relation to the above, a feature of the present invention that differs from Patent Document 1 is that no creases are provided in the region of the upper extension of crease 35 (marked with *) and the region of the lower extension of crease 36 (marked with *) in Fig. 2. That is, the cardboard described in Patent Document 1 (particularly Fig. 6) has a crease (55), which is folded at the same time as folding crease (5b), so that crease (54) needs to be folded separately. In contrast, in the present invention, there is no crease corresponding to crease (55), so that when folding the part corresponding to crease (5b), the part corresponding to crease (54) can be folded at the same time, thereby reducing the number of steps.

[0027] The present invention is not limited to the configuration of the above embodiment, and various modifications are possible. For example, the article holding structures 23, 24 do not necessarily have to have the rising slopes formed alternately, and the rising slopes may be provided in the same direction. Also, for example, as long as the lower ends of the side walls 21, 22 extend to the lower end positions of the article holding structures 23, 24, the lower ends of the outer walls 26, 27 do not have to extend below the lower ends of the side walls 21, 22. [Explanation of symbols]

[0028] 1 Packaging materials 2 Sheet material 2a Top and bottom sides 2b Two perpendicular sides 2c,2d cut 21,22 side wall 23,24 Article holding structure 23a,24a end face 25 Plane part 26,27 Exterior wall 31,32 crease 31a, 32a Mountain fold (top end) 33,34 Folds (bottom edge) 35,36 folds L1 Length of item holding part P Goods S Storage space

Claims

1. A packaging material for holding an article, which is formed from a flat rectangular sheet member and holds an article by abutting a part of the article to be packed, A pair of side walls facing each other at a predetermined interval; a flat surface portion on which an article is placed, the flat surface portion connecting the pair of side walls; an article holding structure adjacent to the flat portion, extending obliquely from one side wall to the other side wall across the pair of side walls without having a bent portion therebetween; The sheet member is provided with a cut for forming the side wall, the article holding structure, and the planar portion across the pair of side walls, and a plurality of folds perpendicular to the cuts; The article holding structure is formed by folding the fold at the lower portion of the one side wall in a valley to form a lower end portion, and folding the fold at the other side wall in a mountain to form an upper end portion, the planar portion is formed by folding a fold on one of the side walls above a lower end of the article holding structure, and folding a fold on the other side wall, and no fold is provided in the portion that becomes the side wall in the region of the extension of the former fold, A packaging material for holding items, characterized in that an end face of the item holding structure located above the planar portion abuts a portion of an item placed on the planar portion to form an item holding portion.

2. Let a be the length between the crease forming the lower end of the article holding structure and the crease between the flat portion and the other side wall, b be the length of the flat portion, and c be the length between the crease forming the upper end of the article holding structure and the crease between the one side wall and the flat portion, a = b * c / (b + 2c) 2. The packaging material for holding articles according to claim 1,

3. A method for assembling a packaging material for holding an article, which is formed from a flat rectangular sheet member and holds an article by abutting a part of the article to be packaged, comprising the steps of: The packaging material is A pair of side walls facing each other at a predetermined interval; a flat surface portion on which an article is placed, the flat surface portion connecting the pair of side walls; an article holding structure adjacent to the flat portion, extending obliquely from one side wall to the other side wall across the pair of side walls without having a bent portion therebetween; The sheet member is provided with a cut for forming the side wall, the article holding structure and the flat surface portion across the pair of side walls, and a plurality of folds perpendicular to the cuts; The article holding structure is formed by folding a fold in a lower portion of one of the side walls in a valley direction to form a lower end portion, and folding a fold in an extension line of the fold in the other side wall in a mountain direction to form an upper end portion, The planar portion is formed by folding a fold on one of the side walls above a lower end of the article holding structure, and folding a fold on the other side wall, with no fold provided in the portion that becomes the side wall in the region of the extension of the former fold, A method for assembling packaging material for holding items, characterized in that an end face of the item holding structure located above the planar portion abuts a portion of an item placed on the planar portion to form an item holding part.

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