Packaging case

Abstract

To provide a paper-made packaging case capable of protecting a sphere being a commodity without separately preparing a packaging box and capable of confirming the spherical commodity being a content without opening, while adopting a material having less environmental load.SOLUTION: A paper-made packaging case 1, capable of housing a sphere S while a part of it is exposed, comprises: a pair of double side walls 10 in which inner walls 11a, 11b face each other and at least the pair of inner walls 11a, 11b are provided with first hole parts 31, respectively, so as to fix the sphere S by sandwiching; and connection surface parts 20 connecting the pair of double side walls 10 so that the inner walls 11a, 11b of the pair of double side walls 10 are fixed while facing each other.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a packaging case for packaging spherical objects. [Background technology]

[0002] Traditionally, packaging for (for example, colored) balls used in various sports has been made using transparent plastic packaging, which has the advantage of looking good in stores and allowing the contents to be checked without opening the package. However, in recent years, the development of environmentally friendly products has been implemented in various fields, and in the packaging sector too, reviews are being carried out with the aim of reducing the environmental burden by reducing the amount of materials used and changing materials.

[0003] For example, Patent Document 1 describes a paper packaging sleeve in which a golf ball is sandwiched and fixed between a sheet with holes on both sides, allowing the golf ball to be exposed and confirmed through the holes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-030893 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the packaging sleeve described in Patent Document 1, the spherical product protrudes from the sleeve, so if the spherical product is displayed in this state there is a possibility that it may become soiled, and a separate packaging box is required, and it is understood that the user cannot check the spherical product contents without opening the packaging box.

[0006] To provide a paper packaging case that uses a material with low environmental impact, protects a spherical product without a separate packaging box, and allows the spherical product contents to be confirmed without opening the case. [Means for solving the problem]

[0007] A first form of a packaging case according to the present invention is a paper packaging case capable of containing a sphere with a portion of it exposed, characterized in that it comprises a pair of double side walls whose inner walls face each other, at least the pair of inner walls each having a first hole portion so as to sandwich and fix the sphere, and a connecting surface portion connecting the pair of double side walls so that the inner walls of the pair of double side walls are fixed in a state where they face each other.

[0008] A second form of the packaging case according to the present invention is the first form described above, characterized in that a second hole portion is provided in the outer wall of the pair of double side walls at a position corresponding to the first hole portion.

[0009] A third form of the packaging case of the present invention is described as the second form, characterized in that the outer wall and the inner wall are each rectangular of approximately the same size, the connecting surface portion is at least composed of a first surface portion, a second surface portion, and a third surface portion connecting three of the four opposing sides of the rectangles of the pair of outer walls, and a pair of side edge surface portions connecting the outer wall and the inner wall which are opposing to each other, the first surface portion and the third surface portion opposing each other, and the first surface portion and the third surface portion each have a cutout portion so as to expose the contained sphere.

[0010] A fourth form of the packaging case of the present invention is described as the second form, characterized in that the outer wall and the inner wall are each rectangular of approximately the same size, the connecting surface portion is at least composed of a first surface portion, a second surface portion, and a third surface portion connecting three of the four opposing sides of the rectangle of one of the pair of outer walls, and a pair of side edge surface portions connecting the outer wall and the inner wall which are opposing to each other, the first surface portion and the third surface portion opposing each other, the second surface portion forming a double wall with a fourth surface portion connecting the pair of inner walls, and the second surface portion and the fourth surface portion being adhesively fixed on opposing surfaces of the double walls.

[0011] A fifth form of the packaging case according to the present invention is described as the fourth form, characterized in that the packaging case is assembled by folding a single blank, the first hole portion is circular, and a crease is provided in the inner wall near the first hole portion along a radial direction of the circle and parallel to the folding direction.

[0012] A sixth aspect of the packaging case according to the present invention is the fourth aspect, characterized in that a lead crease is provided at the boundary portion between the side edge surface portion and the inner wall.

[0013] A seventh aspect of the packaging case according to the present invention is the one described as the first aspect, characterized in that the packaging case is made of paper having a metallic luster. Effect of the Invention

[0014] According to the present invention, the sphere is clamped and fixed in a partially exposed state by first holes provided in each of the inner walls of a pair of double side walls of a packaging case made of paper, while the sphere is protected by the outer walls of the pair of double side walls.This reduces the environmental impact and makes it possible to inspect the sphere (the product) without opening it while protecting it. [Brief description of the drawings]

[0015] [Figure 1]1A and 1B are overall perspective views of a packaging case according to a first embodiment of the present invention, in which (a) shows the case in an upright position, (b) shows the case with one of the outer walls facing down, and (c) shows the case when items are stored inside the case and can be touched by hand. [Diagram 2] 1 is a plan view of a blank of a packaging case according to a first embodiment of the present invention when the case is unfolded. [Diagram 3] 1A and 1B are overall perspective views of a packaging case according to a second embodiment of the present invention, in which (a) shows the case in an upright state, (b) shows the case with one of the outer walls facing down, and (c) shows the case in a folded, semi-finished state. [Figure 4] FIG. 11 is a plan view of a blank in an unfolded state of a packaging case according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiment.

[0017] In the description of this specification, "rectangle" includes not only rectangular and approximately rectangular shapes, but also squares and approximately square shapes, and furthermore, "parallel" includes not only parallel but also approximately parallel, and "orthogonal" includes not only orthogonal but also approximately orthogonal.

[0018] First Embodiment FIG. 1 shows an overall oblique view of a packaging case 1 according to a first embodiment of the present invention, where FIG. 1(a) shows the case in an upright state, FIG. 1(b) shows the case with one outer wall 12a at the bottom, FIG. 1(c) shows the state in which items stored in the case are touched with hand H, and FIG. 2 is a plan view of a blank of the packaging case according to this embodiment when unfolded.

[0019] The packaging case 1 according to the present invention is for housing spherical products therein, and examples of the spherical products include golf balls and tennis balls. In this embodiment, the spherical products S are golf balls. In this embodiment, as shown in Figs. 1(a) to 1(c), three spherical products S are housed in the packaging case 1, and the packaging case containing the three spherical products S is designated by the symbol 1P.

[0020] The packaging case 1 according to this embodiment is a hexahedral structure with an open front, and the top and bottom sides of the packaging case 1 (i.e., the first surface 21a and the third surface 23b in which the notch 2N is formed) are configured to expose many of the spheres S, and the left and right sides of the packaging case 1 (i.e., the double side wall 10 through which the first hole 31 and the second hole 32 are formed) are configured to allow the color of the spheres S to be confirmed. The back surface of the packaging case 1 (i.e., the second surface 22) may bear, for example, product information. In the present invention, the size of the packaging case 1 and the number of spheres S to be stored can be designed in consideration of the ratio so as to fit the fixtures in the sales area.

[0021] The packaging case 1 of this embodiment, as shown in Figures 1(a) to 1(c) and 2, is made of paper and can accommodate a sphere S with a portion of it exposed, and comprises a pair of double side walls 10 with inner walls 11a, 11b facing each other, and at least one pair of inner walls 11a, 11b each having a first hole portion 31 for sandwiching and fixing the sphere S, and a connecting surface portion 20 connecting the pair of double side walls 10 so that the inner walls 11a, 11b of the pair of double side walls 10 are fixed in a state where they are facing each other.

[0022] With this configuration, the sphere S is sandwiched and fixed in place with a portion of the sphere S exposed by the first holes 31 provided in the inner walls 11a, 11b of the pair of double side walls 10 of the paper packaging case 1, while the sphere S is protected by the outer walls 12a, 12b of the pair of double side walls 10, so that the environmental impact is small and it is possible to check the sphere S, which is a product, without opening it while protecting it. For this fixation, it is preferable that the diameter of the circle of the first hole 31 is about 70% of the diameter of the sphere S.

[0023] As shown in Figures 1(a) to 1(c) and 2, in the packaging case 1 of this embodiment, a second hole portion 32 is provided in the outer walls 12a, 12b of a pair of double side walls 10 at a position corresponding to the first hole portion 31.

[0024] This configuration allows the contents, the sphere S, to be more visually confirmed without opening the package. In this embodiment, the diameter of the circle of the second hole 32 is smaller than the diameter of the circle of the first hole 31.

[0025] As shown in Figures 1(a) to 1(c) and 2, in the packaging case 1 of this embodiment, outer walls 12a, 12b and inner walls 11a, 11b are each rectangular and of approximately the same size, and the connection surface portion 20 is at least composed of first surface portions 21a, 21b, second surface portion 22, and third surface portions 23a, 23b that connect three of the four opposing sides of the rectangles of the pair of outer walls 12a, 12b, and a pair of side edge surface portions 201a, 201b that connect the opposing outer walls 12a, 12b and inner walls 11a, 11b, and the first surface portions 21a, 21b and the third surface portions 23a, 23b are opposed to each other, and a cutout portion 2N is provided in the first surface portions 21a, 21b and the third surface portions 23a, 23b respectively so as to expose the contained sphere S.

[0026] This structure makes it possible to check the contents (sphere S) not only visually but also tactilely without opening the package (see Fig. 1(c)). The slits (notches 2N) on the top and bottom sides and the open front provide a gap large enough for about three fingers to fit through, allowing the user to rotate the sphere S and check its feel.

[0027] In this embodiment, the connection surface portion 20 is composed of first surface portions 21a, 21b, second surface portion 22, third surface portions 23a, 23b, a pair of side edge surface portions 201a, 201b, insertion pieces 221a, 223a, folding pieces 211, 213, 221b, 223b, first connection pieces 25a, 25b, and adhesive margins 26a, 26b.

[0028] The packaging case 1 according to this embodiment is made of paper having a metallic luster.

[0029] With this configuration, the appearance of the sphere S, which is the content, is reflected by the light inside the packaging case and is reflected on the inner surface, making it possible to more visually check the content (for example, the color of the sphere) of the sphere S without opening it.

[0030] The metallic luster can be realized, for example, by aluminum deposition, aluminum foil lamination, gravure printing, etc. In the present invention, the above effect may be realized by using other high-brightness materials.

[0031] Turning to Figure 2, blank 1B of packaging case 1 has a rectangular second surface portion 22 which is connected to outer walls 12a and 12b, respectively, via folding lines 1a and 1b, which are parallel to each other, and outer wall 12a is connected to side edge surface portion 201a via folding line 2a, which is parallel to folding line 1a, and is connected to first surface portion 21a and third surface portion 23a via folding lines 3a and 4a, which are perpendicular to folding line 1a and parallel to each other.

[0032] The outer wall 12b is connected to the side edge surface portion 201b via a 2b folding line L2b parallel to the 1b folding line L1b, and is connected to the first surface portion 21b and the third surface portion 23b via a 3b folding line L3b and a 4b folding line L4b perpendicular to the 1b folding line L1b and parallel to each other. Between the outer wall 12b and the first surface portion 21b and the third surface portion 23b, insertion openings 221c and 223c into which insertion pieces 221a and 223a described below can be inserted are provided. Three circular second holes 32 are formed in each of the outer walls 12a and 12b, which function as windows for checking the sphere S from the outside.

[0033] The side edge surface portion 201a is connected to the inner wall 11a via the 5a folding line L5a parallel to the 2a folding line L2a, and the side edge surface portion 201b is connected to the inner wall 11b via the 5b folding line L5b parallel to the 2b folding line L2b. The height dimension (the vertical dimension in FIG. 2) of the side edge surfaces 201a and 201b is about 7.5 mm for the sake of work efficiency during assembly and to prevent the contents from spilling out (and because it is close to the lower limit at which graphics can be printed).

[0034] The inner wall 11a is connected to the first connection piece 25a via a 6a folding line L6a parallel to the 5a folding line L5a, and the inner wall 11b is connected to the first connection piece 25b via a 6b folding line L6b parallel to the 5b folding line L5b. Three first holes 31 for fixing and storing the sphere S are formed in each of the inner walls 11a and 11b. As shown in FIG. 2, the first holes 31 are formed by combining a circular one and a rectangle extending to be in contact with the 6a folding line L6a. The rectangle prevents distortion of the periphery that occurs when bending at the folding line. In the present invention, the shape of the first hole 31 is not limited to a circle, and shapes such as a square or a triangle can be adopted as long as the effects of the present invention are achieved, but a perfect circle is preferable in order to make the action of touching and checking the feel smooth. Various shapes can be adopted for the shape of the second hole 32.

[0035] The first surface portion 21a is connected to the insertion piece 221a that can be inserted into the insertion port 221c via the 7a bending line L7a parallel to the 3a bending line L3a, and the third surface portion 23a is connected to the insertion piece 223a that can be inserted into the insertion port 223c via the 8a bending line L8a parallel to the 4a bending line L4a. The first surface portion 21a and the third surface portion 23a are each formed with a notch portion 2N.

[0036] The first surface portion 21b is connected to the folded piece 221b via a 7b folding line L7b parallel to the 3b folding line L3b, and the third surface portion 23b is connected to the folded piece 223b via an 8b folding line L8b parallel to the 4b folding line L4b. The first surface portion 21b and the third surface portion 23b each have a notch portion 2N formed therein.

[0037] The first surface portion 21b is connected to the folded piece 211 via the 9b folding line L9b that is perpendicular to the 3b folding line L3b, and the third surface portion 23b is connected to the folded piece 213 via the 10b folding line L10b that is perpendicular to the 4b folding line L4b.

[0038] The first connection piece 25a is connected to the adhesive strip 26a via the 11a folding line L11a parallel to the 6a folding line L6a, and the first connection piece 25b is connected to the adhesive strip 26b via the 11b folding line L11b parallel to the 6b folding line L6b. The adhesive strips 26a and 14b are attached to the second surface portion 22 with an adhesive during assembly.

[0039] In this embodiment, the 6a folding line L6a, the 6b folding line L6b, the 9a folding line L9a, and the 9b folding line L9b are valley folds, and the other folding lines are mountain folds. In this embodiment, the grain of the paper is vertical in FIG.

[0040] In this embodiment, when assembling, the adhesive tabs 26a, 26b are attached to the second surface portion 22 with adhesive, and the three spheres S are folded at each folding line so as to be fixed by sandwiching them between a pair of first hole portions 31, and the insertion pieces 221a, 223a are inserted into the insertion openings 221c, 223c, respectively, to form a packaging case 1P containing spheres S as shown in Figure 1(a).

[0041] According to this embodiment, the sphere S is clamped and fixed in place while being partially exposed by the first hole portions 31 provided in the inner walls 11a, 11b of a pair of double side walls 10 of the packaging case 1 made of paper, while the sphere S is protected by the outer walls 12a, 12b of the pair of double side walls 10. This reduces the environmental impact and makes it possible to inspect the product, sphere S, without opening it while protecting it.

[0042] Generally, when golf balls and other spheres used for sports are displayed in stores, customers may open the package before purchasing to check the feel of the contents, and repeated opening and resealing increases the possibility of the package being damaged and the contents being soiled. According to this embodiment, the front is opened as widely as possible, allowing the customer to feel the feel of the sphere S without opening it, which has the effect of avoiding such problems.

[0043] <Second embodiment> In the second embodiment of the present invention, unlike the first embodiment, the packaging case 1' can be in a semi-finished state.

[0044] Fig. 3 shows an overall perspective view of a packaging case 1' according to a second embodiment of the present invention, with Fig. 3(a) showing the upright state, Fig. 3(b) showing the state where one outer wall 12'b is at the bottom, Fig. 3(c) showing the folded semi-finished product state 1'S, and Fig. 4 is a plan view of a blank 1'B of the packaging case 1' according to this embodiment when it is unfolded. Of the various elements constituting the packaging case 1' according to this embodiment, those having similar functions are given the same reference numerals as in the first embodiment, and their description will be omitted.

[0045] As in the first embodiment, this embodiment is a paper packaging case 1' capable of containing a sphere S with a portion of it exposed, as shown in Figures 3(a) to 3(c) and 4, and comprises a pair of double side walls 10' with inner walls 11'a, 11'b facing each other, and at least one pair of inner walls 11'a, 11'b each having a first hole portion 31' for sandwiching and fixing the sphere S, and a connecting surface portion 20' connecting the pair of double side walls 10' so that the inner walls 11'a, 11'b of the pair of double side walls 10' are fixed in a state where they are facing each other.

[0046] In this embodiment, similarly to the first embodiment, second holes 32' are provided in the outer walls 12'a, 12'b of the pair of double side walls 10' at positions corresponding to the first holes 31' as shown in Figures 3(a) to 3(c) and 4. In this embodiment, three pairs of first holes 31' are provided, and two pairs of second holes 32' are provided.

[0047] More specifically, in this embodiment, as shown in Figs. 3(a) to 3(c) and 4, the outer walls 12'a, 12'b and the inner walls 11'a, 11'b are rectangular of approximately the same size, and the connecting surface portion 20' is made up of a first surface portion 21a', a second surface portion 22', and a third surface portion 23a' that connect three of the four opposing sides of the rectangle of one of the outer walls 12'a, 12'b, and a connecting surface portion 23a' that connects the four opposing sides of the rectangle of the outer walls 12'a, 12'b. It is at least composed of 12'a, 12'b and a pair of side edge surfaces 201'a, 201'b connecting inner walls 11'a, 11'b, and the first surface 21a' and the third surface 23a' face each other, and the second surface 22' forms a double wall with a fourth surface 24 connecting the pair of inner walls 11'a, 11'b, and the second surface 22' and the fourth surface 24 are adhesively fixed on opposing surfaces of the double wall.

[0048] This configuration not only provides the same effects as the first embodiment, but also improves efficiency during mass production since only one glue tab is required. Also, since the product can be flattened in a semi-finished state with the glue tab attached as shown in Fig. 3(b), it can be stored and transported in a small space even when stacked in large quantities, and can be delivered to the customer in this state.

[0049] In this embodiment, the packaging case 1' is assembled by folding one blank 1'B, the first hole portion 31' is circular, and a crease BR is provided near the first hole portion 31' of the inner walls 11'a, 11'b along the radial direction of the circle, parallel to the folding direction.

[0050] With this configuration, the crease BR concentrates stress at the folding line when folding, making folding easier and reducing deformation around the first hole portion 31'.

[0051] In this embodiment, a lead crease is provided at the boundary portion between the side edge surface portions 201'a, 201'b and the inner walls 11'a, 11'b (the portion of the 13a folding line L13a and the 13b folding line L13b shown in FIG. 4). The lead crease is a crease with discontinuous cuts.

[0052] This configuration facilitates folding at the fold lines.

[0053] In this embodiment, the connection surface portion 20' is composed of first surface portions 21'a, 21'b, 21'c, second surface portion 22', third surface portions 23'a, 23'b, 23'c, fourth surface portion 24, a folded piece 211c, a pair of side edge surface portions 201'a, 201'b, insertion pieces 221'b, 223'b, folding pieces 231a, 231b, 233a, 233b, and an adhesive margin 26'b.

[0054] Turning to Figure 4, blank 1'B of packaging case 1' has a rectangular fourth surface portion 24 which is connected to inner walls 11'a and 11'b, respectively, via folding lines 12a and 12b, which are parallel to each other, and inner wall 11'a is connected to side edge surface portion 201'a via folding line 13a, which is parallel to folding line 12a, L12a, and is connected to folding pieces 231a and 233a, respectively, via folding lines 14a and 15a, which are perpendicular to folding line 12a and parallel to each other.

[0055] The inner wall 11'b is connected to the side edge surface portion 201'b via a 13b folding line L13b parallel to the 12b folding line L12b, and is connected to the folded piece 231b and the folded piece 233b via a 14b folding line L14b and a 15b folding line L15b perpendicular to the 12b folding line L12b and parallel to each other. Three first holes 31' for fixing and storing the spheres S are formed in each of the inner walls 11'a and 11'b. The first holes 31' are formed of circles as shown in FIG.

[0056] As described above, near the first hole 31' of the inner walls 11'a and 11'b, the pressed creases BR are provided along the radial direction of the circle of the first hole 31' and parallel to the folding direction (at the 12a folding line L13a, the 12b folding line L12b, the 13a folding line L13a, and the 13b folding line L13b). As shown in Fig. 4, a pair of pressed creases BR is provided above and below the radial direction of the circle of the six first hole 31', and another pressed crease BR (9 places) is provided near the first hole 31'.

[0057] The side edge surface portion 201'a is connected to the outer wall 12'a via the 16a folding line L16a parallel to the 13a folding line L13a, and the side edge surface portion 201'b is connected to the outer wall 12'b via the 16b folding line L16b parallel to the 13b folding line L13b.

[0058] The outer wall 12'a is connected to the second surface portion 22' via a fold line L17a parallel to the fold line L16a, and the outer wall 12'b is connected to the margin 26'b via a fold line L17b parallel to the fold line L16b. Two circular second holes 32' functioning as windows for checking the sphere S from the outside are formed in each of the outer walls 12'a and 12'b.

[0059] The outer wall 12'a is connected to the first surface portion 21'a and the third surface portion 23'a via folding lines 18a and 19a, which are perpendicular to the folding line 16a and parallel to each other, and the outer wall 12'b is connected to the first surface portion 21'b and the third surface portion 23'b via folding lines 18b and 19b, which are perpendicular to the folding line 16b and parallel to each other.

[0060] Between the outer wall 12'a and the first surface portion 21'a and the third surface portion 23'a, there are provided insertion openings 221'c and 223'c into which insertion pieces 221'b and 223'b, which will be described later, can be inserted.

[0061] The first surface portion 21'b is connected to an insertion piece 221'b that can be inserted into the insertion port 221'c via a 20b bending line L20b that is parallel to the 18b bending line L18b, and the third surface portion 23'b is connected to an insertion piece 223'b that can be inserted into the insertion port 223'c via a 21b bending line L21b that is parallel to the 19b bending line L19b.

[0062] The second surface 22' is connected to the first surface 21'c and the third surface 23'c via the 20c folding lines L20c and L21c folding lines L21c that are parallel to each other and perpendicular to the 17a folding line L17a, and the first surface 21'c is connected to the folded piece 211c via the 22c folding line L22c that is parallel to the 20c folding line L20c. A pair of locking projections are provided at the tip of the folded piece 211c so as to extend to the left and right.

[0063] The blank 1'B is folded at the folding lines L16a and L16b, and the glue tab 26'b is attached to the second side 22' with an adhesive, and the second side 22' is attached to the fourth side 24 with an adhesive, resulting in a semi-finished product state as shown in Fig. 3(c). In this embodiment, in the location where the fourth side 24 and the second side 22' are fixed, the position where the adhesive is applied is shifted downward in the vertical direction in Fig. 4, rather than in the center of the fourth side 24, due to the positional relationship with the glue tab 26'b.

[0064] In this embodiment, among the folding lines, the 12a folding line L12a, the 12b folding line L12b, the 14a folding line L14a, the 14b folding line L14b, the 15a folding line L15a, and the 15b folding line L15b are valley folds, and the other folding lines are mountain folds. In this embodiment, the grain direction is vertical in FIG. 4. Furthermore, in this embodiment, the 12a folding line L12a, the 12b folding line L12b, the 13a folding line L13a, and the 13b folding line L13b have lead creases.

[0065] In this embodiment, when assembling, the adhesive tabs 26'b and the second surface portion 22' are attached to the fourth surface portion 24 using adhesive, the three spheres S are folded at each folding line so as to be fixed by clamping them between a pair of first holes 31', the insertion pieces 221'b, 223'b are inserted into the insertion openings 221'c, 223'c, respectively, and the fold-back piece 211c is folded inward to form a packaging case 1'P containing spheres S as shown in Figure 3(a).

[0066] According to this embodiment, as in the first embodiment, the environmental load is small, the sphere S, which is the product, can be checked without opening while protecting it, and since it is in a semi-finished state by flattening it with the glue tab adhered, it can be stored and transported in a small space even when stacked in large quantities, and can be delivered to the customer in this state. Also, according to the second embodiment, the part that was glued with adhesive in two places in the first embodiment is reduced to only one place (i.e., adhesive is applied to the glue tab 26'b and the fourth surface portion 24 together, and the second surface portion 22' is placed on top of them, allowing them to be glued and fixed in one process), thereby improving efficiency during mass production.

[0067] The present invention is not limited to the above-described embodiment or the modified examples described throughout the specification, and appropriate changes and modifications can be made without departing from the technical concept of the present invention.

[0068] For example, the pressed crease BR and the lead crease of the second embodiment may be adopted in the first embodiment. [Explanation of symbols]

[0069] 1, 1' Packing Case 1P, 1'P sphere packaging case 10, 10' double sidewall 11a, 11b, 11'a, 11'b inner wall 12a, 12b, 12'a, 12'b Exterior wall 20, 20' connection surface 21a, 21b, 21'a, 21'b 1st surface part 22, 22' 2nd side 23a, 23b, 23'a, 23'b 3rd surface part 24 Fourth side 31, 31' 1st hole 32, 32' 2nd hole 2N Notch P sphere

Claims

1. A paper packaging case capable of housing a sphere with a portion of the sphere exposed, A pair of double side walls, each of which has an inner wall facing each other, and at least the pair of inner walls is provided with a first hole portion so as to sandwich and fix the sphere; a connecting surface portion connecting the pair of double side walls so that the inner walls of the pair of double side walls are fixed in a state in which they face each other; A packaging case comprising:

2. 2. The packaging case according to claim 1, wherein a second hole is provided in an outer wall of the pair of double side walls at a position corresponding to the first hole.

3. The outer wall and the inner wall are rectangular and have approximately the same size. The connection surface portion is at least composed of a first surface portion, a second surface portion, and a third surface portion that connect three of four opposing sides of the rectangles of the pair of outer walls, and a pair of side edge surface portions that connect the outer wall and the inner wall that are opposed to each other, The packaging case according to claim 2, characterized in that the first surface portion and the third surface portion face each other, and the first surface portion and the third surface portion each have a cutout portion so as to expose the contained sphere.

4. The outer wall and the inner wall are rectangular and have approximately the same size. the connecting surface portion is at least composed of a first surface portion, a second surface portion, and a third surface portion that connect three of four opposing sides of a rectangle of one of the pair of outer walls, and a pair of side edge surface portions that connect the outer wall and the inner wall that are opposed to each other, the first surface portion and the third surface portion face each other, The packaging case according to claim 2, characterized in that the second surface portion forms a double wall with a fourth surface portion connecting the pair of inner walls, and the second surface portion and the fourth surface portion are adhesively fixed to each other on opposing surfaces of the double walls.

5. The packaging case is assembled by folding a single blank, The first hole is circular, The packaging case according to claim 4, characterized in that a crease is provided in the inner wall near the first hole along a radial direction of the circle and parallel to the folding direction.

6. 5. The packaging case according to claim 4, wherein a lead crease is provided at a boundary between the side edge surface portion and the inner wall.

7. 2. The packaging case according to claim 1, wherein the packaging case is made of paper having a metallic luster.

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