Container

Abstract

To provide a container capable of easily and appropriately discharging a content.SOLUTION: A container 1 has a storage part 5 formed by partially joining a sheet-like material, and comprises a surface 2, a back surface 3, and a bottom surface 4. In the bottom surface 4, an opening material 50 which is opened so as to extract the content, and has an opening part 51 is provided, at the center portion in a horizontal direction of the container 1. In an accommodated state where the content is accommodated, a slope part 44 which inclines from top to bottom toward the opening part 51, is formed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a container. [Background technology]

[0002] A liquid transport container used for transporting large amounts of liquid is disclosed in Patent Document 1. The liquid transport container in Patent Document 1 is configured to contain liquid using an easily disposable inner bag and a returnable shape-retaining outer bag, and the contents are filled using an opening provided at the top of the inner bag and discharged from the bottom. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 2555806 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in containers that store powder or granular materials, there is a risk that a large amount of the contents will remain inside the container even if the contents are discharged from the bottom using the configuration as in Patent Document 1. In particular, in the case of containers that store large amounts of powder or granular materials, the handleability is deteriorated, so there is a demand for an easier way to properly discharge the contents.

[0005] An object of the present disclosure is to provide a container that can easily and appropriately discharge its contents. [Means for solving the problem]

[0006] The present disclosure solves the above problems by the following solving means. Note that, for ease of understanding, the following description will be given with reference symbols corresponding to the embodiments of the present disclosure, but the present disclosure is not limited thereto.

[0007] The first disclosure is a container (1) for containing at least one of powder and granules, in which a container portion (5) is formed by partially joining sheet-like materials (6), and which has a front surface (2), a back surface (3), and a bottom surface (4), and the bottom surface (4) is provided with an opening member having an opening (51) that is open to allow the contents to be extracted, in the horizontal center of the container (1), and which forms a slope portion (44) that slopes downwardly toward the opening (51) when the container (1) contains the contents.

[0008] The second disclosure relates to a container (1) according to the first disclosure, wherein the front surface (2) and the bottom surface (4) are connected via a first lower ridge (L1), the back surface (3) and the bottom surface (4) are connected via a second lower ridge (L2), and a region of the bottom surface (4) that is closer to the front surface (2) than a bottom surface center line (L3) that passes through the center of the bottom surface (4) and extends in the lateral direction of the container (1) is defined as a first bottom surface region (41), and The area of ​​the back surface (3) side of the bottom surface center line (L3) is a second bottom surface area (42), the area of ​​the front surface (2) that is located above and directly faces the back surface (3) is a first surface area (21), the area of ​​the back surface (2) that is located below the first surface area (21) and directly faces the first bottom surface area (41) of the bottom surface (4) is a second surface area (22), and the area of ​​the back surface (3) that is located above and directly faces the front surface (2) is a first surface area (21). The first surface area (21) of the front surface (2) and the first surface area (31) of the back surface (3) are defined as a first back surface area (31) and a second back surface area (32) that is below the first back surface area (31) and directly faces the second bottom surface area (42) of the bottom surface (4), respectively. The first surface area (21) of the front surface (2) and the first back surface area (31) of the back surface (3) are defined as a pair of grooves (11) that join both side ends (11) of the first surface area (21) and both side ends (11) of the first back surface area (31). The container (1) is joined by a side end joint (12) and has a first bottom joint (14) that joins the second surface area (22) of the front surface (2) and the first bottom area (41) of the bottom surface (4) along the inclined portion (44), and a second bottom joint (16) that joins the second back surface area (32) of the back surface (3) and the second bottom area (42) of the bottom surface (4) along the inclined portion (44).

[0009] A third disclosure is the container (1) according to the first or second disclosure, wherein the bottom surface (4) is capable of being unfolded into a flat surface when no contents are contained therein.

[0010] A fourth disclosure is a container (1) according to any one of the first to third disclosures, wherein the front surface (2), the bottom surface (4) and the back surface (3) are formed from a single sheet-like material (6).

[0011] The fifth disclosure is a container (1) described in any one of the first to fourth disclosures, which has an upper end joining portion (15) intended to join an upper end of the front surface (2) and an upper end of the back surface (3).

[0012] A sixth disclosure is the container (1) according to any one of the first to fifth disclosures, wherein the storage section (5) has a capacity of 80 liters or more. Effect of the Invention

[0013] According to the present disclosure, it is possible to provide a container that allows the contents to be discharged easily and appropriately. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing a container 1 of a first embodiment from diagonally above. [Diagram 2] FIG. 2 is a perspective view showing the container 1 from diagonally below. [Diagram 3] 2 is a cross-sectional view of the container 1 taken along the position of the arrow AA in FIG. [Figure 4] FIG. 2 is a diagram showing the container 1 with the storage section 5 not inflated, in a folded state with the bottom surface 4 unfolded and facing forward. [Diagram 5] 1A to 1C are diagrams showing the configuration of a laminate 6 forming the container 1 during the manufacturing process. [Figure 6] FIG. 2 is a cross-sectional view of a laminate 6. [Figure 7] 1 is a perspective view showing the container 1 in a contained state in which the contents are contained, the upper opening 1a is closed, and the upper end intended joint portion 15 is joined, as viewed obliquely from above. [Figure 8] FIG. 11 is a perspective view showing a container 1B of a second embodiment from diagonally above. [Figure 9] 9 is a cross-sectional view of the container 1B taken along the position of the arrow BB in FIG. 8. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, one embodiment of the present disclosure will be described with reference to the drawings.

[0016] (First embodiment) Fig. 1 is a perspective view of the container 1 of the first embodiment, viewed obliquely from above. Fig. 2 is a perspective view of the container 1, viewed obliquely from below. Fig. 3 is a cross-sectional view of the container 1 taken along the position of the arrow AA in Fig. 1. Figs. 1 to 3 show a state in which the upper opening 1a is opened and the storage section 5 is inflated.

[0017] FIG. 4 is a diagram showing the container 1 in which the storage section 5 is not inflated, and the bottom surface 4 is unfolded and folded forward. FIG. 4(A) is a front view, and FIG. 4(B) is a right side view. FIG. 5 is a diagram showing the form of the laminate 6 forming the container 1 in the manufacturing process. FIG. 5(A) is a perspective view, and FIG. 5(B) is a right side view. Each figure is a schematic view, and the size and shape of each part are appropriately exaggerated or omitted to facilitate understanding. In the following description, specific numerical values, shapes, materials, etc. are shown, but these can be changed as appropriate. In addition, the term sheet-like is used in the claims and specification of this application. Similar expressions include plate-like and film-like, but these are generally used in the order of thickness: plate, sheet, and film. However, such distinction in usage has no technical meaning, so these terms can be replaced as appropriate. Therefore, the term "sheet-like" in the claims and specification of the present application can be replaced with "plate-like" or "film-like."

[0018] The container 1 of the present embodiment shown in Figs. 1 to 3 is composed of one sheet-like laminate 6, has a front surface 2, a back surface 3, a bottom surface 4, and a storage section 5, and stores at least one of powder and granules as a storage object. Specific examples of powder include salt, sugar, and flour. Specific examples of granules include rice and resin pellets. Powder is an aggregate of fine solid particles, and granules is an aggregate of relatively coarse solid particles. There is no clear distinction between powder and granules, but particles with a particle diameter of about 1 mm are often referred to as finer particles and coarser particles. The container 1 of the present embodiment stores at least one of powder and granules as a content. That is, the content is not limited to powder or granules, but a content that can be considered as granules may be mixed with a content that can be considered as finer powder. As shown in Fig. 1, in a state where the upper opening 1a that opens when no contents are contained is facing upward and the opening member 50 is facing downward, the up-down direction, the lateral direction (left-right direction), and the front-rear direction indicated by the arrows in Fig. 1 will be described as terms indicating the directions of the container 1. Note that these directions are for the sake of convenience of explanation, and do not limit the orientation of the container 1 in use to these directions.

[0019] As shown in FIG. 5, the container 1 of the embodiment is formed by folding back one rectangular strip-shaped laminate 6 at a predetermined location and joining it at a predetermined joining portion. Specifically, the rectangular strip-shaped laminate 6 is folded back three times along its longitudinal direction, such as a mountain fold at the first fold line (first lower ridge line) L1, a valley fold at the third fold line L3, and a mountain fold at the second fold line (second lower ridge line) L2. By folding back in this manner, the laminate 6 is folded back in a substantially W-shape (inverted M-shape). The portion of the laminate 6 between the first fold line L1 and the second fold line L2 becomes the bottom surface 4 (bottom surface sheet 40). The portion of the bottom surface 4 (bottom surface sheet 40) between the first fold line L1 and the third fold line L3 becomes the first bottom surface region 41. The portion of the bottom surface 4 (bottom surface sheet 40) between the second fold line L2 and the third fold line L3 becomes the second bottom surface region 42. The portion of the laminate 6 outside the first fold line L1 becomes the front surface 2 (front surface sheet 20). The portion of the laminate 6 outside the second fold line L2 becomes the back surface 3 (back surface sheet 30).

[0020] That is, the laminate 6 includes a rectangular top sheet 20 forming the top surface 2, a rectangular back sheet 30 forming the back surface 3, and a rectangular bottom sheet 40 in which the top sheet 20 and the back sheet 30 are continuously arranged (connected) by a single laminate 6, and which forms the bottom surface 4. The top sheet 20, the bottom sheet 40, and the back sheet 30 are continuously arranged. With this configuration, the container 1 can reduce the number of joints, particularly the joints on the bottom surface 4 that mainly bears the weight of the contents, and the strength is increased. Therefore, it is possible to provide the storage section 5 with a capacity of, for example, 80 liters or more, or even 100 liters or more.

[0021] In this embodiment, the container 1 is formed by folding a single rectangular strip-shaped laminate 6, but, for example, the front surface 2, the back surface 3, and the bottom surface 4 may each be formed from separate independent sheets, and the container 1 may be formed by joining these at the first fold line (first lower ridge line) L1 and the second fold line (second lower ridge line) L2.

[0022] The front surface 2 (front surface sheet 20) and the bottom surface 4 (bottom surface sheet 40) are connected via a first fold line L1. The back surface 3 (back surface sheet 30) and the bottom surface 4 (bottom surface sheet 40) are connected via a second fold line L2. The third fold line L3 is a bottom surface center line that passes through the center of the bottom surface 4 and extends in the horizontal direction of the container 1. Of the bottom surface 4, the area on the front surface 2 side of the bottom surface center line (third fold line L3) that passes through the center of the bottom surface 4 and extends in the horizontal direction of the container 1 is defined as a first bottom surface area 41, and the area on the back surface 3 side of the bottom surface center line (third fold line L3) is defined as a second bottom surface area 42. That is, the bottom surface 4 is divided into a first bottom surface area 41 including the first fold line L1 and a second bottom surface area 42 including the second fold line L2. The first bottom surface region 41 and the second bottom surface region 42 are connected via a third fold line L3, and during the manufacturing process, the first bottom surface region 41 is folded in half at the third fold line L3 so as to be convex toward the storage section 5 (convex upward).

[0023] An opening member 50 having an opening 51 that is open so that the contents can be extracted is provided in the center of the bottom surface 4. The opening member 50 can be, for example, a resin molded product. By making the opening member 50 a resin molded product, it is possible to easily join the opening member 50 and the bottom surface 4 by heat sealing. The opening member 50 can be used by appropriately attaching a lid (not shown), an openable valve, or the like.

[0024] In addition, when the container 1 is in a state in which the contents are accommodated, the bottom surface 4 on the left and right sides of the opening member 50 are formed with inclined surfaces 44 that slope downward toward the opening 51. The inclined surfaces 44 will be described later.

[0025] In the folded state shown in Fig. 4 where the container 1 does not contain any contents, the upper region of the front surface 2 that directly faces the back surface 3 is defined as a first surface region 21, and the lower region of the first surface region 21 that directly faces the first bottom surface region 41 of the bottom surface 4 is defined as a second surface region 22. That is, the front surface 2 (front sheet 20) is divided into the first surface region 21 that faces the back surface 3 (back surface sheet 30) and the second surface region 22 that faces the first bottom surface region 41 of the bottom surface 4 (bottom sheet 40). The first surface region 21 and the second surface region 22 are divided by a first boundary line L4.

[0026] In the non-containing state shown in FIG. 4 where the container 1 does not contain any contents, the upper area of ​​the back surface 3 that directly faces the front surface 2 is defined as the first back surface area 31, and the lower area of ​​the first back surface area 31 that directly faces the second bottom surface area 42 of the bottom surface 4 is defined as the second back surface area 32. That is, the back surface 3 (back surface sheet 30) is divided into the first back surface area 31 that faces the front surface 2 (front surface sheet 20) and the second back surface area 32 that faces the second bottom surface area 42 of the bottom surface 4 (bottom surface sheet 40). The first back surface area 31 and the second back surface area 32 are divided by the second boundary line L5. Note that FIG. 4 shows a state in which the front surface 2 (front surface sheet 20) is folded at the first boundary line L4 and the back surface 3 (back surface sheet 30) is flat without being folded at the second boundary line L5, and the bottom surface 4 (bottom surface sheet 40) is folded approximately parallel to the front surface 2.

[0027] The front surface 2 (front surface sheet 20) and the back surface 3 (back surface sheet 30) are disposed opposite each other in the front-rear direction. The storage section 5 is a space surrounded by the front surface 2 (front surface sheet 20), the bottom surface 4 (bottom surface sheet 40), and the back surface 3 (back surface sheet 30). For convenience, the upper opening 1a is referred to as the "upper opening 1a" whether it is in an open state or in a state sealed by the upper end intended joining portion 15 as described below.

[0028] The first surface region 21 of the surface 2 (surface sheet 20) and the first back surface region 31 of the back surface 3 (back surface sheet 30) are joined by a pair of side end joints 12 that join both side end portions 11 of the first surface region 21 and both side end portions 11 of the first back surface region 31, respectively. Specifically, the left end portion 11 of the first surface region 21 and the left end portion 11 of the first back surface region 31 are joined by the left side end joint 12. Similarly, the right end portion 11 of the first surface region 21 and the right end portion 11 of the first back surface region 31 are joined by the right side end joint 12. The side end joints 12 extend along the up-down direction.

[0029] The second surface region 22 of the front surface 2 (front sheet 20) and the first bottom surface region 41 of the bottom surface 4 (bottom sheet 40) are joined by a pair of first bottom joints 14 extending from the lower end 12B of the side end joint 12 laterally inward to the first fold line L1. Specifically, the second surface region 22 of the front surface 2 (front sheet 20) and the first bottom surface region 41 of the bottom surface 4 (bottom sheet 40) are joined by the left first bottom joint 14 extending from the lower end 12B of the left side end joint 12 diagonally downward to the right to the first fold line L1, and are joined by the right first bottom joint 14 extending from the lower end 12B of the right side end joint 12 diagonally downward to the left to the first fold line L1. That is, the first bottom joint 14 that joins the second surface region 22 of the front surface 2 and the first bottom surface region 41 of the bottom surface 4 is provided along the inclined portion 44.

[0030] The second back surface region 32 of the back surface 3 (back surface sheet 30) and the second bottom surface region 42 of the bottom surface 4 (bottom surface sheet 40) are joined by a pair of second bottom joints 16 extending from the lower end 12B of the side end joint 12 laterally inward to the second fold line L2. Specifically, the second back surface region 32 of the back surface 3 (back surface sheet 30) and the second bottom surface region 42 of the bottom surface 4 (bottom surface sheet 40) are joined by the left second bottom joint 16 extending from the lower end 12B of the left side end joint 12 diagonally downward to the right to the second fold line L2, and are joined by the right second bottom joint 16 extending from the lower end 12B of the right side end joint 12 diagonally downward to the left to the second fold line L2. That is, the second bottom joint 16 that joins the second back surface region 32 of the back surface 3 and the second bottom surface region 42 of the bottom surface 4 is provided along the inclined surface 44.

[0031] The first bottom joint 14 and the second bottom joint 16 will be described in detail. Although the two are provided in different locations, they have the same configuration, so the description of one is incorporated into the description of the other. In this embodiment, the first bottom joint 14 and the second bottom joint 16 are linear and of equal width (equal width in the extending direction). The width W14 of the first bottom joint 14 (see FIG. 4(A)) and the width W16 of the second bottom joint 16 (see FIG. 4(A)) are, for example, 5 mm or more and 20 mm or less.

[0032] In this embodiment, the lower ends 14B of the pair of first bottom joints 14 are separated from each other in the horizontal direction. The lower ends 16B of the pair of second bottom joints 16 are separated from each other in the horizontal direction. However, the lower ends 14B of the first bottom joints 14 and the lower ends 16B of the second bottom joints 16 may be connected to each other.

[0033] In this embodiment, the second surface region 22 of the surface 2 (surface sheet 20) and the first bottom surface region 41 of the bottom surface 4 (bottom sheet 40) are joined by a pair of first lower side end joints 17 that join both side ends of the second surface region 22 and both side ends of the first bottom surface region 41 located below the side end joints 12. The first lower side end joints 17 extend in the up-down direction.

[0034] The second back surface region 32 of the back surface 3 (back surface sheet 30) and the second bottom surface region 42 of the bottom surface 4 (bottom surface sheet 40) are joined by a pair of second lower side end joints 18 that join both side ends of the second back surface region 32 and both side ends of the second bottom surface region 42 located below the side end joints 12. The second lower side end joints 18 extend in the up-down direction.

[0035] It should be noted that the first lower corner portion 71 (including the first lower end joint 17) consisting of the top sheet 20 and the bottom sheet 40 outboard (below) the first bottom joint 14 does not contribute to the storage function of the storage section 5. Similarly, the second lower corner portion 72 (including the second lower end joint 18) consisting of the back sheet 30 and the bottom sheet 40 outboard of the second bottom joint 16 does not contribute to the storage function of the storage section 5. In this embodiment, the first lower corner portion 71 and the second lower corner portion 72 are left in place to facilitate manufacturing (omit cutting and removal), but they may be cut and removed.

[0036] The side end joints 12, the first bottom joint 14, the second bottom joint 16, the first lower side end joint 17 and the second lower side end joint 18 are formed by, for example, heat sealing.

[0037] (Layer structure of laminate 6) 6, the laminate 6 can be formed, for example, by laminating four layers, from the outside, in this order: a base layer 61, a first intermediate layer 62, a second intermediate layer 63, and a sealant layer 64. The laminate may include other layers, or may have a layer structure with three or two layers, which is fewer than the above example.

[0038] A known resin film or sheet can be used for the base layer 61. Specifically, a polyester film, a polyolefin film, or a polyamide film can be used. As the polyester film, for example, a polyethylene terephthalate film (PET film), a polybutylene terephthalate film (PBT film), a polyethylene naphthalate film (PEN film), or the like can be used.

[0039] The resin constituting the base layer 61 may contain a biomass-derived structural unit as a structural unit thereof. Hereinafter, a PET film containing a biomass-derived structural unit is also referred to as a bio-PET film.

[0040] The base layer 61 may be a uniaxially stretched film or a biaxially stretched film stretched in two predetermined directions. For example, a biaxially stretched polyethylene terephthalate film or a biaxially stretched polyamide film can be preferably used.

[0041] The substrate layer 61 may be formed, for example, as a vapor deposition layer, of a barrier layer which is a thin metal layer such as aluminum metal or a thin inorganic oxide layer such as aluminum oxide or silicon oxide.

[0042] The thickness of the base layer 61 is not particularly limited, but can be, for example, 10 μm or more and 100 μm or less.

[0043] The sealant layer 64 is the innermost layer among the layers constituting the laminate, and as shown in FIG. 5, the side end joint 12, the first bottom joint 14, the second bottom joint 16, the first lower side end joint 17, and the second lower side end joint 18 can be formed by facing the sealant layer 64 and heating the predetermined places. The sealant layer 64 can also be a known resin film or sheet. Specifically, a film such as a polyethylene film (PE film) or a polypropylene film (PP film) can be used. The sealant layer 64 may be a moisture-absorbing PE film or a moisture-absorbing PP film containing inorganic particles capable of absorbing moisture from the powder or granules that are the contents.

[0044] The resin constituting the sealant layer 64 may contain a biomass-derived structural unit as a structural unit thereof. Hereinafter, a PE film containing a biomass-derived structural unit is also referred to as a bio-PE film.

[0045] The thickness of the sealant layer 64 is not particularly limited, but may be, for example, 10 μm or more and 100 μm or less.

[0046] Examples of the first intermediate layer 62 and the second intermediate layer 63 include a barrier layer having barrier properties and an impact-resistant layer having impact resistance. Examples of the barrier layer include an aluminum foil and a base layer having the above-mentioned metal thin film layer or metal oxide thin film layer. The above-mentioned biaxially oriented polyamide film can be preferably used as the impact-resistant layer.

[0047] The thickness of the first intermediate layer 62 and the second intermediate layer 63 is not particularly limited, but can be, for example, 10 μm or more and 100 μm or less.

[0048] The above layers may be laminated with each other by an adhesive layer. The adhesive layer may be any of a one-component curing adhesive, a two-component curing adhesive, and a non-curing adhesive. The adhesive may be a solvent-free adhesive, or a solvent-based adhesive suitable for dry lamination. Examples of solvent-based adhesives include rubber-based adhesives, vinyl-based adhesives, olefin-based adhesives, silicone-based adhesives, epoxy-based adhesives, phenol-based adhesives, and urethane-based adhesives. Among these, urethane-based adhesives are preferred, and two-component curing urethane-based adhesives are more preferred. Examples of solvent-free adhesives, i.e., non-solvent lamination adhesives, include polyether-based adhesives, polyester-based adhesives, silicone-based adhesives, epoxy-based adhesives, and urethane-based adhesives. Among these, urethane-based adhesives are preferred, and two-component curing urethane-based adhesives are more preferred.

[0049] The thickness of the adhesive layer is, for example, 0.1 μm or more and 10 μm or less, preferably 0.2 μm or more and 8 μm or less, and more preferably 0.5 μm or more and 6 μm or less.

[0050] When the laminate 6 has the above four-layer structure, the following layer structure can be exemplified. Note that the following description of the layer structure is given in order from the outside of the container 1. Also, in Fig. 6, adhesive layers provided between each layer are omitted, but in reality, adhesive layers can be provided between each layer as follows.

[0051] 1) PET film / adhesive layer / aluminum foil / adhesive layer / biaxially oriented polyamide film / adhesive layer / PE film 2) Bio-PET film / adhesive layer / aluminum foil / adhesive layer / biaxially oriented polyamide film / adhesive layer / PE film 3) PET film / adhesive layer / aluminum foil / adhesive layer / biaxially oriented polyamide film / adhesive layer / moisture-absorbing PE film

[0052] Furthermore, when the laminate 6 has a three-layer structure (when the second intermediate layer 63 is omitted), for example, the following layer structure can be exemplified. 4) PET film / adhesive layer / biaxially oriented polyamide film / adhesive layer / PE film 5) Inorganic oxide vapor-deposited PET film / adhesive layer / biaxially oriented polyamide film / adhesive layer / PE film 6) PET film / adhesive layer / biaxially oriented polyamide film / adhesive layer / bio-PE film 7) Inorganic oxide vapor deposition bio-PET film / adhesive layer / biaxially oriented polyamide film / adhesive layer / PE film

[0053] Furthermore, when the laminate 6 has a two-layer structure (when the first intermediate layer 62 and the second intermediate layer 63 are omitted), for example, the following layer structure can be exemplified. 8) Biaxially oriented polyamide film / adhesive layer / PE film

[0054] The laminate 6, which is a laminate in which the base layer 61, the first intermediate layer 62, the second intermediate layer 63, and the sealant layer 64 are laminated, is folded back into a predetermined shape with the sealant layers 64 in contact with each other, and predetermined locations are heat-sealed. This forms the side end joint 12, the first bottom joint 14, the second bottom joint 16, the first lower end joint 17, and the second lower end joint 18. In addition, in a state in which the bag shape is formed by the above process, a hole for attaching the opening member 50 is opened in the bottom surface 4, and the opening member is inserted. Then, the flange portion of the opening member 50 and the bottom surface 4 are sealed to complete the container 1 of this embodiment.

[0055] (folded state) In an unused container 1, the volume of the storage section 5 is approximately zero, as shown in Fig. 4. Also, since the first lower end joint 17 and the second lower end joint 18 are not connected, the bottom surface 4 can be unfolded into a flat surface as shown in the figure and folded in a direction approximately parallel to the front surface 2 and the back surface 3. Therefore, even if the opening member 50 is provided, the unused container 1 is small in size and highly convenient when unused.

[0056] (Upper opening 1a in open state) The state in which the upper opening 1a is opened and the storage section 5 is inflated as shown in Figs. 1 to 3 is an easy-to-use state when storing powder or granules in the storage section 5. The upper opening 1a at the top of the storage section 5 is opened widely, so that the contents can be easily introduced into the storage section 5 through the upper opening 1a. When storing powder or granules in the storage section 5, the lower opening 51 is closed with a lid or the like. In this embodiment, the upper opening 1a is provided, and the upper opening 1a is closed after storing the contents. However, the upper end may also be joined in advance between the front surface 2 (front surface sheet 20) and the back surface 3 (back surface sheet 30) without providing the upper opening 1a. In that case, the contents are stored through the lower opening 51.

[0057] The first lower end joint 17 and the second lower end joint 18 may be used without being connected. However, for example, by connecting the first lower end joint 17 and the second lower end joint 18 with an adhesive tape or the like, the first lower end joint 17 and the second lower end joint 18 can function as a support part that makes the container 1 stand on its own. In this way, it is possible to easily perform the task of opening the upper opening 1a and deforming the container so as to inflate the entire container.

[0058] (Containment status) FIG. 7 is a perspective view of the container 1 in a storage state in which the contents are stored, the upper opening 1a is closed, and the upper end joint portion 15 is joined, as shown in FIG. 7, and the container 1 is then sealed by heat-sealing the upper end joint portion 15 to close the upper opening 1a. After the contents are stored in the storage portion 5, as shown in FIG. 7, the upper opening 1a is closed and the upper end joint portion 15 is joined, so that the bottom surface 4 is three-dimensionally formed and the upper opening 1a is sealed. In this storage state, the shape of the front surface 2 and the back surface 3 corresponding to the storage portion 5 is approximately hexagonal with a rectangle arranged above and an isosceles trapezoid arranged below. The shape of the bottom surface 4 corresponding to the storage portion 5 is approximately hexagonal. In detail, the periphery of the opening 51 is rectangular, and the inclined surfaces 44, 44 are each isosceles triangular. From another perspective, the first bottom surface region 41 has an isosceles trapezoid shape narrowing toward the front, and the second bottom surface region 42 has an isosceles trapezoid shape narrowing toward the rear.

[0059] The container 1 of this embodiment can be handled as it is while the contents are contained therein, but it is more convenient if the container 1 is treated as an inner bag and an outer bag or a transport container that covers the container 1 from the outside is used in combination. The container 1 can flexibly change its outer diameter shape to a certain extent even when the contents are contained therein, so it is easy to use an outer bag or an outer container. In particular, if an outer bag that allows the container 1 to be lifted as it is and the outer bag is further placed in a transport container with high rigidity, it is possible to prevent accidents such as the container 1 being broken during transportation and to improve convenience during transportation. Examples of transport containers with high rigidity include drums, wooden boxes, and metal boxes. When discharging the contents in this state, the container 1 is lifted up by the outer bag with the opening member 50 facing down and removed from the transport container, and the contents are discharged from the opening 51 by removing a lid (not shown) attached to the opening member 50 or opening a valve. At this time, since the inclined surface 44 is provided on the side of the opening member 50, the contents naturally move toward the opening 51, and the contents are less likely to remain behind.

[0060] The inclination of the inclined surface portion 44 is determined by the angle θ shown in FIG. 4. This angle θ is the angle between the direction in which the first bottom joint portion 14 extends and the first broken line L1, and is also the angle between the direction in which the second bottom joint portion 16 extends and the second broken line L2. This angle θ can be appropriately selected, but is preferably 30° or more and 60° or less, and more preferably 30° or more and 45° or less. In this embodiment, θ=38°. If the angle θ is within the above range, when the contents are taken out with the side on which the opening member 50 is provided facing down, the contents can be moved naturally by the inclined surface portion 44, and the contents can be smoothly discharged without remaining around the opening member 50.

[0061] As described above, according to the container 1 of this embodiment, in the state in which the contents are contained, the inclined surface portion 44 is formed, which slopes downward toward the opening 51, so that the contents can be easily discharged in an appropriate state with a small amount of remaining contents. In addition, since the first lower end joint portion 17 and the second lower end joint portion 18 of the container 1 are not connected, the bottom surface 4 can be developed into a flat surface when the contents are not contained, and the container can be folded into a small size even if it has the opening member 50. In addition, since the front surface 2, the bottom surface 4, and the back surface 3 are formed from a single sheet-like material, the container 1 has a high strength, can contain a large amount of contents, and can be easily manufactured. In addition, since the container 1 has the upper end joint portion 15 that is planned to join the upper end of the front surface 2 and the upper end of the back surface 3, the container 1 can be used to facilitate the content containing operation, and can be completely sealed after the contents are contained.

[0062] Second embodiment Fig. 8 is a perspective view showing a container 1B of the second embodiment from diagonally above. Fig. 9 is a cross-sectional view of the container 1B cut at the position of the arrow BB in Fig. 8. The second embodiment is similar to the container 1 of the first embodiment except that a sealing member 60 is further provided. Therefore, the same reference numerals are used for parts that perform the same functions as in the first embodiment described above, and duplicated explanations will be omitted as appropriate.

[0063] The sealing member 60 is attached to the flange-shaped portion of the opening member 50 on the side of the storage section 5, and seals the opening 51 of the opening member 50. The sealing member 60 is composed of a metal layer such as aluminum, a resin film layer, or a multilayer film formed by laminating these, and seals the opening 51. It is desirable for the sealing member 60 to have high barrier properties (gas barrier properties, water vapor barrier properties, etc.) according to the contents. By providing the sealing member 60, the contents can be protected from gas and water vapor at a high level.

[0064] The present disclosure is not limited to the above-described embodiments. [Explanation of symbols]

[0065] 1 container 1a Top opening 2 surface 3 Back side 4 Bottom 5. Storage section 6 Laminate 11 Both ends (right end, left end) 12 Side end joint 12B Lower end of side end joint 12 14 1st bottom joint 14B Lower end of first bottom joint 14 15 Upper end joint 16 Second bottom joint 16B Lower end of second bottom joint 16 17 First lower end joint 18 Second lower end joint 20 Surface sheet 21 1st surface area 22 Second surface area 30 Back sheet 31 First back area 32 Second back surface area 40 Bottom sheet 41 1st bottom area 42 2nd bottom area 44 Slope 50 Opening material 51 Opening 61 Base material layer 62 First Middle Class 63 Second Middle Class 64 Sealant Layer 71 1st bottom corner 72 2nd bottom corner

Claims

1. A container for containing at least one of powder and granules, the container comprising a sheet-like material partially joined to form a containing portion, the container having a front surface, a back surface, and a bottom surface, The bottom surface of the container has an opening member in the horizontal center of the container, the opening being open to allow the contents to be extracted, and when the container is in a contained state with the contents contained therein, the bottom surface forms a sloped portion that slopes from above toward the opening.

2. 2. The container according to claim 1, the front surface and the bottom surface are connected via a first lower edge line, the back surface and the bottom surface are connected via a second lower edge line, A region of the bottom surface on the front side of a bottom surface center line that passes through the center of the bottom surface and extends in the lateral direction of the container is defined as a first bottom surface region, and a region of the bottom surface on the back side of the bottom surface center line is defined as a second bottom surface region, An upper region of the front surface that directly faces the back surface is defined as a first surface region, and an area of ​​the bottom surface that is lower than the first surface region and directly faces the first bottom surface region is defined as a second surface region, A region of the back surface that is located above and directly faces the front surface is defined as a first back surface region, and a region of the back surface that is located below the first back surface region and directly faces the second bottom surface region of the bottom surface is defined as a second back surface region. the first surface region of the front surface and the first back surface region of the back surface are joined by a pair of side end joints that join both side ends of the first surface region and both side ends of the first back surface region, respectively; a first bottom joining portion joining the second surface region of the front surface and the first bottom surface region of the bottom surface along the inclined surface; a second bottom joining portion joining the second back surface region of the back surface and the second bottom surface region of the bottom surface along the inclined surface; A container having

3. The container according to claim 1 or 2, The container has a bottom surface that can be developed into a flat surface when no contents are contained therein.

4. The container according to claim 1 or 2, A container, wherein the front surface, the bottom surface, and the back surface are formed from a single sheet-like material.

5. The container according to claim 1 or 2, A container having an upper end joining portion that is intended to join an upper end of the front surface and an upper end of the back surface.

6. The container according to claim 1 or 2, The container has a capacity of 80 liters or more.

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