Liquid receiving container

Abstract

To provide a liquid receiving container that is capable of inhibiting an inner bag body from moving relative to an exterior body.SOLUTION: A liquid receiving container 1A comprises an inner bag body 2 receiving a content therein and an exterior body 3 attached to the inner bag body 2. The inner bag body 2 has a spout 10A formed with a shaft-like part 53 and the exterior body 3 has a neck 3a covering the shaft-like part 53. The container further comprises movement-inhibiting means 90A for inhibiting the shaft-like part 53 from moving relative to the neck 3a.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a liquid storage container that includes an inner pouch for storing contents and an outer pouch attached to the inner pouch. [Background technology]

[0002] As this type of liquid storage container, a composite container in which an inner container is covered with an outer container and is formed in the appearance of a bottle is known (see, for example, Patent Document 1).

[0003] In the composite container of Patent Document 1, the inner container has a pouch body that stores the contents and a pouring tool for pouring the contents that is heat-bonded to the pouch body. The pouring tool is composed of a pouring part body (spout) with a pouring outlet formed therein and a cap that is attached to the pouring part body so that the pouring outlet can be opened and closed by rotating it. Meanwhile, the outer container has a cylindrical first member with a bottom made of paperboard and a second member made of a pulp molded product that tapers toward an upper opening, and the second member is connected to the first member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-148486 Summary of the Invention [Problem to be solved by the invention]

[0005] In the composite container of Patent Document 1, when opening or closing the cap, the outer container is held with one hand and the cap is rotated with the other. At this time, a torque acts on the composite container, causing the inner container to move (rotate) relative to the outer container around the spout body. Furthermore, during transportation, vibrations are applied to the inner container, causing it to move up and down relative to the outer container.

[0006] However, the composite container of Patent Document 1 simply has a structure in which the outer container is covered by the inner container. Therefore, as the cap is rotated, the inner container rotates relative to the outer container around the dispensing portion body. Even if the torque required to open and close the cap is applied to the cap, the inner container rotates together with the cap, preventing the inner container from securing the support reaction force required for opening the cap, potentially making it difficult to open and close the cap. Furthermore, vibrations during transportation repeatedly cause the inner container to move vertically relative to the outer container, resulting in repeated impact forces acting between the inner and outer containers, which could cause plastic deformation of the outer container, particularly if it is made of paper, potentially compromising the value of the product.

[0007] It is thought that the above problems can be solved by fixing the necessary points between the inner container and the outer container with glue (adhesive), but if the inner container is completely fixed to the outer container, the repeated impact forces caused by vibrations during transportation will not be alleviated, and stress will concentrate around the points fixed with glue, which may cause damage to the surrounding areas.

[0008] The present invention has been made in view of the above-mentioned problems, and has an object to provide a liquid storage container that can suppress relative movement of an inner pouch body with respect to an outer pouch body. [Means for solving the problem]

[0009] The liquid storage container according to the present invention for solving the above problems has the following characteristic configuration: an inner bag body in which contents are stored; an outer body attached to the inner bag body; A liquid storage container comprising: The inner bag body has a spout having a shaft-shaped portion formed therein, the exterior body has a neck portion that covers the shaft portion, The present invention is to provide a movement suppressing means for suppressing the movement of the shaft portion relative to the neck portion.

[0010] According to the liquid storage container of this configuration, the shaft-shaped portion formed on the spout of the inner pouch is covered by the neck of the outer pouch, and the movement suppressing means suppresses relative movement of the shaft-shaped portion with respect to the neck. Therefore, even if an external force acts to move the inner pouch relative to the outer pouch, the movement suppressing means can suppress the relative movement of the inner pouch with respect to the outer pouch. Furthermore, according to the liquid storage container of this configuration, the inner pouch is not completely fixed to the outer pouch. For example, a small gap (play) between the shaft-shaped portion and the neck and elastic deformation of the shaft-shaped portion and the neck allow for slight relative movement of the inner pouch with respect to the outer pouch. Therefore, repeated impact forces due to vibrations during transportation are mitigated by the small relative movement between the shaft-shaped portion and the neck, thereby preventing damage that would occur if glue were used.

[0011] In the liquid storage container according to the present invention, the outer body is attached to the inner bag body so as to abut at least the shaft-like portion, It is preferable that the movement suppression means includes a non-circular engagement portion in which the cross-sectional shape of the shaft-shaped portion and the cross-sectional shape of the neck portion are both formed in a shape that is not a perfect circle at the cross section at the abutment point between the shaft-shaped portion and the outer casing.

[0012] With this liquid storage container, even if an external force acts to rotate the inner pouch about the axis of the shaft portion relative to the outer pouch, the shaft portion and the neck portion interfere with each other at the non-circular engagement portion so as to limit the relative rotation, thereby preventing the inner pouch from rotating about the axis of the shaft portion relative to the outer pouch.

[0013] In the liquid storage container according to the present invention, The movement suppressing means preferably includes a protruding portion that protrudes from the spout in a direction intersecting the axial direction of the shaft-like portion and engages with the neck portion.

[0014] With this configuration of liquid storage container, the protruding portion that protrudes in a direction intersecting the axial direction of the axial portion is engaged with the neck portion, so that even if an external force acts to move the inner bag body relative to the outer body in the axial direction of the axial portion, the inner bag body can be prevented from moving relative to the outer body in the axial direction of the axial portion.

[0015] In the liquid storage container according to the present invention, The movement suppressing means preferably includes a recess and / or a protrusion formed on the shaft-shaped portion, and a neck engaging portion formed on the neck portion so as to engage with the recess and / or the protrusion.

[0016] With this liquid storage container, the shaft-shaped portion and the neck are locked together by the engagement of the neck engaging portion with the recess and / or protrusion formed on the shaft-shaped portion, so that even if an external force acts to move the inner bag body relative to the outer body, the relative movement of the inner bag body relative to the outer body can be suppressed.

[0017] In the liquid storage container according to the present invention, The movement suppressing means preferably includes a band material that tightly binds the shaft portion via the neck portion.

[0018] With this liquid storage container, when the axial portion is tightly bound via the neck portion by the band material attached to the neck portion, the neck portion and the axial portion are frictionally engaged, so that even if an external force acts to move the inner bag body relative to the outer body, the relative movement of the inner bag body relative to the outer body can be suppressed.

[0019] In the liquid storage container according to the present invention, It is preferable that the inner bag body be separable from the outer bag body by disabling the movement suppressing means.

[0020] With a liquid storage container of this configuration, the inner bag body can be separated from the outer body when the movement suppression means is disabled.Therefore, for example, when disposing of the liquid storage container, the inner bag body and the outer body can be easily separated and disposed of by destroying the movement suppression means.

[0021] In the liquid storage container according to the present invention, The movement suppression means is disabled by (a) rotating the spout relative to the exterior body around the shaft-shaped portion with a torque equal to or greater than a specified torque; (b) pulling the spout out of the exterior body in the axial direction of the shaft-shaped portion with a specified pulling force or more. It is preferable that the above-mentioned method be carried out by one or both of the above.

[0022] With a liquid storage container of this configuration, the movement suppression means can be disabled by simple operations such as rotating the spout relative to the outer casing around the axial portion with a specified torque or greater, and / or pulling the spout out of the outer casing in the axial direction of the axial portion with a specified pulling force or greater.

[0023] In the liquid storage container according to the present invention, The spout has a spout portion extending in the axial direction of the shaft-shaped portion, a cap that can open and close the spout by a relative rotation operation with respect to the spout, is attached to the spout; When the opening torque applied to the cap when opening the spout portion is T1 and the specified torque is T2, It is preferable that the specified torque T2 is set to be greater than the opening torque T1 (T2>T1).

[0024] With this liquid storage container, the specified torque T2 required to rotate the spout about its axis relative to the outer casing and disable the movement-suppressing means is set to be greater than the opening torque T1 applied to the cap when opening the spout (T2 > T1). Therefore, when the opening torque T1 is applied to the cap, the movement-suppressing means suppresses the inner pouch from rotating about the axis of the spout relative to the outer casing. Therefore, when the opening torque T1 is applied to the cap, a reaction force is generated against the inner pouch, allowing the cap to be opened smoothly.

[0025] In the liquid storage container according to the present invention, The inner bag body is formed by adhering the spout to a flexible pouch, The exterior body is preferably a molded body made from paper and / or pulp.

[0026] According to the liquid storage container of this configuration, the inner bag is made of a flexible pouch with a spout attached thereto, so that the volume of waste can be easily reduced by folding the pouch when discarding. Furthermore, the outer packaging is a molded body made from paper and / or pulp, which is biodegradable and recyclable. Therefore, the liquid storage container as a whole is environmentally friendly.

[0027] In the liquid storage container according to the present invention, The exterior body has a body portion connected to the neck portion, It is preferable that a sheet is wrapped around or attached to the body portion.

[0028] With a liquid storage container of this configuration, even if the outer casing is, for example, assembled from multiple parts, or is made by folding and molding sheet material, or the body of the outer casing is insufficient in rigidity, the outer casing is reinforced by wrapping or adhering a sheet around the body of the outer casing, thereby suppressing deformation of the outer casing and maintaining a stable shape as a container. [Brief explanation of the drawings]

[0029] [Figure 1] FIG. 1 is a diagram showing a liquid storage container according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an exploded perspective view of the inner pouch of the liquid storage container of the first embodiment. [Figure 3] FIG. 3 is a perspective view of a spout used in the liquid storage container of the first embodiment. [Figure 4] FIG. 4 is an explanatory view of the upper structure of the liquid storage container of the first embodiment. [Figure 5]FIG. 5 is a cross-sectional view of the contact area between the exterior body and the shaft-shaped portion. [Figure 6] FIG. 6 is an explanatory diagram of disabling the movement suppression means. [Figure 7] FIG. 7 is a perspective view of a liquid storage container according to the second embodiment of the present invention. [Figure 8] FIG. 8 is a perspective view of a spout used in a liquid storage container according to the second embodiment. [Figure 9] FIG. 9 is a cross-sectional end view taken along the line GG in FIG. [Figure 10] FIG. 10 is a view showing the main part of a liquid storage container according to a third embodiment of the present invention. [Figure 11] FIG. 11 is a cross-sectional view of the contact area between the exterior body and the shaft-shaped portion, and is an explanatory view of another embodiment (1) of the non-circular engaging portion. [Figure 12] FIG. 12 is a cross-sectional view of the contact area between the exterior body and the shaft-shaped portion, and is an explanatory view of another embodiment (2) of the non-circular engaging portion. [Figure 13] FIG. 13 is a diagram showing another example (1) of the movement suppressing means made up of a recess or protrusion formed on the shaft and a neck engaging portion. [Figure 14] FIG. 14 is a diagram showing another example (2) of the movement suppressing means made up of recesses and protrusions formed on the shaft and the neck engaging portion. [Figure 15] FIG. 15 is an explanatory diagram of a modified example of the spout. DETAILED DESCRIPTION OF THE INVENTION

[0030] The present invention will be described below with reference to the drawings. However, the present invention is not intended to be limited to the embodiments described below or the configurations shown in the drawings. Furthermore, the liquid storage containers shown in the drawings do not strictly depict the actual structure or shape, and details are omitted.

[0031] First Embodiment <Overall structure of liquid storage container> Fig. 1 shows a liquid storage container 1A according to a first embodiment of the present invention. Fig. 1(a) is an external perspective view of the liquid storage container 1A. Fig. 1(b) is an exploded perspective view of the liquid storage container 1A. As shown in Figs. 1(a) and 1(b), the liquid storage container 1A comprises an inner pouch 2 in which liquid contents are stored, and an outer pouch 3 attached to the inner pouch 2, and is formed in the shape of a bottle when viewed from the outside.

[0032] <Inner bag> Fig. 2 is an exploded perspective view of the inner pouch 2 in the liquid storage container 1A of the first embodiment. Note that Fig. 2 shows that the laminate 20, which will be described later, is composed of multiple layers, but the thickness relationships between the layers have been appropriately exaggerated for ease of understanding and do not strictly reflect the relative thicknesses (scale) of the layers in the actual laminate 20. As shown in Fig. 2, the inner pouch 2 includes a flexible pouch 5, a spout 10A attached to the pouch 5 and having a shaft-shaped portion 53, which will be described later, and a cap 15 attached to the spout 10A. The spout 10A will be described in detail later, and here, the pouch 5 and the cap 15 will be described.

[0033] <Pouch> As shown in FIG. 2, the pouch 5 includes a pair of sheet-like laminates 20. As shown in the partially enlarged view of FIG. 2, the laminate 20 includes an outer layer 21, a middle layer 22, and an inner layer 23. The pouch 5 is constructed by overlapping the pair of laminates 20 with the inner layers 23 facing each other and integrally joining the side peripheral edges 20a on both widthwise sides of the peripheral edges of the overlapped pair of laminates 20 and the bottom peripheral edge 20b on the bottom side by heat sealing. The pouch 5 and the spout 10A are integrally joined by heat sealing with a seal portion 54 (described later) of the spout 10A inserted and sandwiched into an upper opening 5a opened on the upper side of the pouch 5. The contents are filled through the spout 10A, and a cap 15 is attached to the spout 10A to seal it, thereby constructing an inner pouch body 2 having a bottle-like appearance as shown in FIG. 1(b). Although the pouch 5 shown here is in the form of a four-sided sealed pouch, it is not limited to this and may be in the form of a gusset pouch, a self-standing pouch, a three-sided sealed pouch, or the like.

[0034] 2, the outer layer 21 is preferably made of a film having excellent mechanical strength, rigidity, etc., because it is the material that forms the base of the pouch 5. Examples of the film that can be used include synthetic resin films such as polypropylene, polyethylene terephthalate, and nylon, and metal-deposited films obtained by depositing aluminum or a metal (metal oxide) such as aluminum oxide, silicon oxide, indium oxide, tin oxide, and zirconium oxide on the film.

[0035] The intermediate layer 22 is provided when light-shielding properties or gas barrier properties are required, and may be made of the above-mentioned synthetic resin film, the above-mentioned metal-deposited film, or metal foil such as aluminum or iron. Alternatively, a laminate of one or more of these films may be used.

[0036] A thermoplastic resin that exhibits heat fusion properties is preferably used for the inner layer 23. Examples of thermoplastic resins include polyolefin resins such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, ethylene-polypropylene copolymer, and ethylene-vinyl acetate copolymer, polyvinyl acetate resins, and polyvinyl chloride resins. The inner layer 23 may be a single-layer film made of a single resin, or a multi-layer film made of multiple resins.

[0037] <Cap> The cap 15 has a top portion 25 and a cylindrical portion 26 that hangs down from the periphery of the top portion 25. The cylindrical portion 26 has multiple vertically extending grooves 26a on its outer periphery, which function as a non-slip surface when the cap 15 is held and rotated with fingers. A female thread 26b is formed on the inner periphery of the cylindrical portion 26 of the cap 15, and can be threaded with a male thread 51a formed on the outer periphery of the spout 10A (described later). The cap 15 is formed as a molded product by injection molding or compression molding, in which a resin is injected into a mold. Examples of resins that can be used for the cap 15 include low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, ethylene-propylene copolymer, and acrylonitrile-butadiene-styrene copolymer (ABS). In addition, instead of the screw-fit type cap 15, a hinged cap that is connected to the spout portion 51 via a hinge and opens and closes the spout portion 51 may be used.

[0038] <Exterior body> As shown in FIG. 1(a), the exterior body 3 has a neck portion 3a, a shoulder portion 3b, a body portion 3c, and a bottom portion 3d, and is formed into a bottle shape from an external perspective. Here, the neck portion 3a, the shoulder portion 3b, and the body portion 3c all have an elliptical cross section. The neck portion 3a is formed into an elliptical truncated cone shape in which the major and minor axes gradually increase toward the bottom. Like the neck portion 3a, the shoulder portion 3b is also formed into a slightly flattened elliptical truncated cone shape in which the major and minor axes gradually increase toward the bottom, with a rounded boundary between the neck portion 3a and the body portion 3c. The body portion 3c is formed into a substantially elliptical cylindrical shape in which the major and minor axes are substantially constant throughout the entire longitudinal direction (vertical direction). The bottom portion 3d is formed into an elliptical shape in a plan view that is slightly bulged upward.

[0039] As shown in FIG. 1(b), the exterior body 3 is formed by combining multiple (two in this example) pulp molded products produced by a pulp molding method, or molded products 30, 40 produced by press molding or various sheet molding methods. Each of the pulp molded products 30, 40 has a shape similar to that of a bottle-shaped exterior body 3 cut vertically down the center and divided into two. Therefore, combining a pulp molded product 30 on one side (the right side in FIG. 1(b)) with a pulp molded product 40 on the other side (the left side in FIG. 1(b)) forms the bottle-shaped exterior body 3. The number of pulp molded products 30, 40 that make up the exterior body 3 is not limited to two; for example, the exterior body 3 may be formed by combining three or more pulp molded products.

[0040] Pulp molded products 30, 40 can be produced by, for example, assembling a three-dimensional papermaking mold consisting of a split mold to form a cavity using a slurry of wood pulp fibers such as recycled paper pulp or virgin pulp, or non-wood fibers such as reed, straw, or hemp as raw materials, and then supplying the fiber slurry into the cavity while suction-dehydrating the papermaking mold to create a paper fiber laminate on the inner surface of the cavity. The paper fiber laminate is then dehydrated, transferred to a drying mold, and loaded into the drying mold, where it is pressurized, heated, and dried. This is an example of a pulp molding method, and other pulp molding methods are also applicable. Other methods, such as press molding using paper as a raw material, and various sheet molding methods, are also applicable.

[0041] In the following, an example will be described in which the exterior body 3 is produced by the pulp molding method. Hereinafter, the "pulp molded products, etc. 30, 40" will be referred to as the "pulp molded products 30, 40," the "pulp molded product, etc. 30" will be referred to as the "pulp molded product 30," and the "pulp molded product, etc. 40" will be referred to as the "pulp molded product 40." The one-side pulp molded product 30 arranged on one side (the right side) in FIG. 1(b) has a one-side peripheral surface forming portion 30a that forms a peripheral surface portion of one half of the exterior body 3, and a one-side bottom forming portion 30b that is integrally connected to the lower edge of the one-side peripheral surface forming portion 30a and overlaps with an other-side bottom forming portion 40b (described later) to form the bottom portion of the exterior body 3.

[0042] 1(b) of the one-side pulp-molded product 30, a one-side first support piece 31 is bendably connected to the one-side circumferential surface forming portion 30a at the side edge portion that appears on the left side of the one-side circumferential surface forming portion 30a so as to extend from the neck portion 3a to the shoulder portion 3b of the exterior body 3, and a one-side second support piece 32 is bendably connected to the one-side circumferential surface forming portion 30a so as to extend from the shoulder portion 3b to the body portion 3c of the exterior body 3. The boundary between the one-side circumferential surface forming portion 30a and the one-side first support piece 31 is a so-called fold that allows the one-side first support piece 31 to be bent relative to the one-side circumferential surface forming portion 30a, and a one-side first recess portion 33 is provided at the boundary portion so as to be located midway along the longitudinal direction of the fold. The boundary between the one-side circumferential surface forming portion 30a and the one-side second support piece 32 is a so-called fold that allows the one-side second support piece 32 to be folded relative to the one-side circumferential surface forming portion 30a, and a one-side second notch 34 is provided at the boundary so as to be located midway along the fold. At the side edge of the one-side circumferential surface forming portion 30a that appears on the right in Figure 1(b), a one-side first insertion piece 36 is bendably connected to the one-side circumferential surface forming portion 30a so as to correspond to the neck portion 3a of the exterior body 3, and a one-side second insertion piece 37 is bendably connected to the one-side circumferential surface forming portion 30a so as to correspond to the body portion 3c of the exterior body 3.

[0043] 1(b), the other-side pulp molded product 40 disposed on the other side (left side) has an other-side peripheral surface forming portion 40a that forms the peripheral surface of the other half of the exterior body 3, and an other-side bottom forming portion 40b that is integrally connected to the lower edge of the other-side peripheral surface forming portion 40a and overlaps with the one-side bottom forming portion 30b to form the bottom portion of the exterior body 3. The other-side pulp molded product 40 has a symmetrical structure to the one-side pulp molded product 30. 1(b) of the other-side peripheral surface forming portion 40a of the other-side pulp molded product 40, an other-side first support piece 41 and an other-side second support piece 42 are formed so as to pair with the one-side first support piece 31 and one-side second support piece 32 of the one-side pulp molded product 30, and an other-side first indentation portion 43 and an other-side second notch portion 44 are formed so as to pair with the one-side first indentation portion 33 and one-side second notch portion 34 of the one-side pulp molded product 30. Also, an other-side first insertion piece 46 and an other-side second insertion piece 47 are formed so as to pair with the one-side first insertion piece 36 and one-side second insertion piece 37 of the one-side pulp molded product 30 on the other-side peripheral surface forming portion 40a of the other-side pulp molded product 40,

[0044] When combining the one-side pulp molded product 30 and the other-side pulp molded product 40 to form the outer package 3, first, the pulp molded products 30, 40 are positioned relative to the inner pouch 2 so that, when the outer package 3 is formed, the neck 3a covers a shaft-like portion 53 (described later) of the spout 10A and abuts against a pair of abutment seats 63. Next, while overlapping the one-side bottom-forming portion 30b and the other-side bottom-forming portion 40b, the one-side first insertion piece 36 and the one-side second insertion piece 37 are inserted into the other-side first insertion portion 43 and the other-side second cutout portion 44, respectively, and the other-side first insertion piece 46 and the other-side second insertion piece 47 are inserted into the one-side first insertion portion 33 and the one-side second cutout portion 34, respectively. As a result, the one-side first insertion piece 36 and the one-side second insertion piece 37 are locked to the other-side first support piece 41 and the other-side second support piece 42, and the other-side first insertion piece 46 and the other-side second insertion piece 47 are locked to the one-side first support piece 31 and the one-side second support piece 32, thereby maintaining the shape of the exterior body 3 shown in Fig. 1(a) in which the one-side pulp molded product 30 and the other-side pulp molded product 40 are combined. Note that the configuration is not limited to that shown in Figs. 1(a) and 1(b) in which two independent pulp molded products 30, 40 are combined and locked at both sides to maintain the shape of the exterior body 3. For example, the exterior body 3 can be cut lengthwise (vertically) from the center and divided into two halves, one of which (corresponding to the pulp molded product 30) and the other of which (corresponding to the pulp molded product 40) can be unfolded and butted together by integrally joining the sides or bottoms of each other with hinges, and by locking key points at the butted parts of the one and the other parts, the shape of the exterior body 3 can be maintained as shown in Figure 1(a).

[0045] <Spout> Fig. 3 is a perspective view of a spout 10A used in a liquid storage container 1A of the first embodiment. As shown in Fig. 3, the spout 10A has a spout portion 51, a flange portion 52, a shaft-shaped portion 53, and a seal portion 54. In the spout 10A, the spout portion 51 is integrally connected to one axial end (upper end) of the shaft-shaped portion 53 via the flange portion 52, and the seal portion 54 is integrally connected to the other axial end (lower end) of the shaft-shaped portion 53. In addition, the spout 10A is formed with a through-hole 6 that passes through the shaft-shaped portion 53 in the axial direction, and is configured so that contents can be filled into or poured out of the pouch 5 through the through-hole 6.

[0046] Spout 10A is preferably made of a synthetic resin that is excellent in moldability and processability. Examples of synthetic resins include polyolefin resins such as polyethylene and polypropylene, polystyrene resin, polyamide resin, polyester resin, acrylic resin, vinyl chloride resin, vinylidene chloride resin, polyethersulfone, etc. As a molding method, it is preferable to perform integral molding by an appropriate molding method such as injection molding, from the standpoint of cost, etc.

[0047] <Spout part> Spout portion 51 is formed in a cylindrical shape extending vertically along the axial direction of shaft-shaped portion 53. On the outer peripheral surface of spout portion 51, a male thread portion 51a is formed that can be threadedly engaged with female thread portion 26b (see FIG. 2) provided on cap 15. On the lower part of spout portion 51, an annular protrusion 51b is formed to be positioned below male thread portion 51a in order to prevent rattling when cap 15 is attached.

[0048] <Flange> The flange portion 52 has an upper flange piece 55 and a lower flange piece 56 that protrude in a direction intersecting (in this example, perpendicular to) the axial direction of the shaft-shaped portion 53. The upper flange piece 55 and the lower flange piece 56 are arranged with a predetermined gap in the axial direction of the shaft-shaped portion 53 and are integrally connected by an intermediate shaft portion 57. A pair of clamping pieces 58 are arranged on both sides of the intermediate shaft portion 57 so as to sandwich the intermediate shaft portion 57 and to connect the upper flange piece 55 and the lower flange piece 56. The pair of clamping pieces 58 are pieces that are gripped by a parts feeder during the manufacturing process of the inner pouch 2 and are also pieces that are held by a jig when filling the pouch 5 with contents. The pair of clamping pieces 58 are also used to prevent the spout from rotating together when the cap 15 is closed.

[0049] <Axis-shaped part> The shaft-shaped portion 53 has a shaft-shaped portion main body 53a having a hollow portion that opens axially to form part of the through hole 6, and a fin portion 53b that is integrally formed with the shaft-shaped portion main body 53a.

[0050] The shaft-shaped main body 53a has a first arcuate surface 61 and a second arcuate surface 62 that are spaced apart in a direction perpendicular to the axial direction of the shaft-shaped main body 53a and in the major axis direction of the neck 3a, which has an elliptical cross section, and a pair of abutment seats 63 (only one of the abutment seats 63 is shown in FIG. 3 ) that are interposed between the arcuate surfaces 61, 62. The pair of abutment seats 63 are formed by a chord that has both end points on the circumference of an imaginary circle that envelops the first arcuate surface 61 and the second arcuate surface 62 and continues along the axial direction of the shaft-shaped main body 53. The pair of abutment seats 63 are arranged in the minor axis direction of the neck 3a, which has an elliptical cross section, and are disposed opposite the one-side pulp molded product 30 and the other-side pulp molded product 40 so as to be able to abut on the upper edge of the neck 3a.

[0051] The fin portion 53b has a first fin piece 71, a second fin piece 72, a third fin piece 73, and a fourth fin piece 74 arranged at a predetermined interval in the axial direction of the shaft-shaped portion 53 (shaft-shaped portion main body 53a). The first fin piece 71 and the second fin piece 72 protrude in a direction intersecting (perpendicular to) the axial direction of the shaft-shaped portion 53 and in the major axis direction of the neck portion 3a having an elliptical cross section. The third fin piece 73 and the fourth fin piece 74 protrude in a direction intersecting (perpendicular to) the axial direction of the shaft-shaped portion 53 and in the entire circumferential direction, including the major axis direction and the minor axis direction, of the neck portion 3a having an elliptical cross section, as described above. Here, as described above, the neck portion 3a has an elliptical truncated cone shape whose major axis and minor axis gradually increase downward, and whose cross section is elliptical. In order to conform to the inner shape of the neck portion 3a, the first fin piece 71, the second fin piece 72, the third fin piece 73 and the fourth fin piece 74 are configured so that the amount of protrusion (protrusion length) in the major axis direction of the neck portion 3a, which has an elliptical cross section, increases successively in the order of the first fin piece 71, the second fin piece 72, the third fin piece 73 and the fourth fin piece 74, and so that they abut (or come close to) the inner surface of the neck portion 3a.

[0052] Due to their shape characteristics, each of the fins 71-74 is elastically deformable in the axial direction (up and down direction) of the shaft-shaped main body 53a. Therefore, when an external force acts to move the inner pouch 2 relative to the exterior body 3 in the axial direction of the shaft-shaped portion 53, the elastic deformation of each of the fins 71-74 allows slight vertical movement of the inner pouch 2 relative to the exterior body 3, while the elastic restoring force associated with the elastic deformation of each of the fins 71-74 resists the external force, thereby preventing the inner pouch 2 from moving relative to the exterior body 3 in the axial direction of the shaft-shaped portion 53.

[0053] <Sealing part> The seal portion 54 is formed in a boat shape having two side surfaces that are fixed to the pouch 5 by a fixing means such as fusion or adhesion. On each side surface, linear recesses 75 and linear protrusions 76 extending in a direction perpendicular to the axial direction of the shaft-shaped portion 53 are alternately arranged along the axial direction of the shaft-shaped portion 53, and these linear recesses 75 and linear protrusions 76 increase the fusion strength to the pouch 5.

[0054] <Ratio of axial length L to inner diameter D (L / D)> In FIG. 3 , the axial length of shaft-shaped portion 53 (shaft-shaped portion main body 53a) is L, and the inner diameter of the opening of spout portion 51 is D. Considering the ease of pouring the contents from spout portion 51, etc., the inner diameter D is preferably 15 to 40 mm (in this example, the inner diameter D is approximately 20.5 mm). The inner diameter D of the opening of spout portion 51 is synonymous with the inner diameter of through-hole 6, and since shaft-shaped portion 53 includes shaft-shaped portion main body 53a having a hollow portion that opens axially to form part of through-hole 6, the outer diameter of shaft-shaped portion main body 53a is related to the inner diameter D. The larger both axial length L and inner diameter D, the larger the engagement area between shaft-shaped portion 53 and neck portion 3a becomes, and therefore the inner diameter D and axial length L are related to the relative movement suppression effect of movement suppression means 90A, which will be described later. On the other hand, the greater the axial length L, the smaller the volume that can accommodate the pouch 5 inside the exterior body 3, and the axial length L is related to the capacity of the exterior body 3 to accommodate the pouch 5. Therefore, in order to ensure that the movement suppressing means 90A exerts a certain level of relative movement suppression effect while ensuring the volume necessary to accommodate the pouch 5 in the exterior body 3, it is important to balance the axial length L and the mouth inner diameter D. Therefore, for the spout 10A, the ratio (L / D) of the axial length L to the mouth inner diameter D is appropriately set. The ratio (L / D) is preferably 0.5 to 4.5, more preferably 1.5 to 3.5, and even more preferably 2.0 to 3.0. Within this range, it is possible to appropriately maintain the balance between the relative movement suppression effect of the movement suppressing means 90A and the capacity to accommodate the pouch 5.

[0055] 4A and 4B are explanatory diagrams of the upper structure of the liquid storage container 1A of the first embodiment. Fig. 4A is a front view of the upper part of the liquid storage container 1A. Fig. 4B is a vertical cross-sectional view of the upper part of the liquid storage container 1A.

[0056] 4(a) and 4(b), when the shaft-shaped portion 53 attempts to move downward relative to the neck 3a, the lower flange piece 56 of the flange portion 52 of the spout 10A abuts against the upper end of the neck 3a of the exterior body 3, restricting the downward relative movement. On the other hand, when the shaft-shaped portion 53 attempts to move upward relative to the neck 3a, one or more, or all of the first fin piece 71, the second fin piece 72, the third fin piece 73, and the fourth fin piece 74 abut against the inner circumferential surface of the neck 3a, which has an elliptical truncated cone shape, restricting the upward relative movement. However, slight vertical movement of the inner pouch body 2 relative to the exterior body 3 is permitted due to elastic deformation of each of the fin pieces 71 to 74.

[0057] Fig. 5 is a cross-sectional end view of the contact portion between the exterior body 3 and the shaft-shaped portion 53. Fig. 5(a) is a cross-sectional end view taken along the line AA in Fig. 4(a). Fig. 5(b) is a cross-sectional end view taken along the line BB in Fig. 4(a). Fig. 5(c) is a cross-sectional end view taken along the line CC in Fig. 4(a). Fig. 5(d) is a cross-sectional end view taken along the line DD in Fig. 4(a). Fig. 5(e) is a cross-sectional end view taken along the line EE in Fig. 4(a).

[0058] 5(a), the outer peripheral surface of the shaft-shaped portion main body 53a is composed of a first arcuate surface 61, a second arcuate surface 62, and a pair of abutment surfaces 63 interposed between these arcuate surfaces 61, 62, and the cross-sectional shape of the shaft-shaped portion 53 is formed in a shape that is not a perfect circle (is formed in a non-circular shape).While whether or not a shape is a perfect circle is generally evaluated by its circularity, in accordance with the definition of circularity set forth in JIS B 0621-1984 (circularity is expressed as the difference in radii of two concentric geometric circles when the distance between the two circles is smallest when a circular shape is sandwiched between them), if the circularity is 1 mm or more, the shape can be considered to be non-circular. 5(b) and 5(c), the first fin piece 71 and the second fin piece 72 are formed to protrude in a direction perpendicular to the axial direction of the shaft-shaped portion 53 and in the major axis direction of the neck portion 3a having an elliptical cross section, and are tapered outward in the major axis direction, so that the cross section of the shaft-shaped portion 53 is not a perfect circle. As shown in 5(d) and 5(e), the third fin piece 73 and the fourth fin piece 74 are formed to protrude in a direction perpendicular to the axial direction of the shaft-shaped portion 53 and in the entire circumferential direction, including the major axis direction and the minor axis direction, of the neck portion 3a having an elliptical cross section, and are tapered outward in the major axis direction and are formed to protrude in a partially annular shape in the minor axis direction, so that the cross section of the shaft-shaped portion 53 is not a perfect circle. Regarding the shaft-shaped portion 53, a shape that is not a perfect circle (non-circular shape) can be defined in another way as follows: in the shaft-shaped portion 53, the distance from the center of gravity of the cross-sectional shape of the shaft-shaped portion 53 to a point on the outline of the cross-sectional shape is different from the distance from the center of gravity of the cross-section to another point on the outline of the cross-sectional shape.

[0059] 5(a) to 5(e), the cross-sectional shape of the neck portion 3a is elliptical, not circular. In other words, in the neck portion 3a, the distance from the center of gravity of the cross-sectional shape of the neck portion 3a to one point on the inner outline of the cross-sectional shape is different from the distance from the center of gravity of the cross-sectional shape to another point on the inner outline. In this way, in the cross section of the shaft-shaped portion 53 and the neck portion 3a at the contact portion between the shaft-shaped portion 53 and the neck portion 3a, both the cross-sectional shapes of the shaft-shaped portion 53 and the neck portion 3a are formed to be non-circular, and non-circular engagement portions 80a to 80e are formed at which the shaft-shaped portion 53 and the neck portion 3a engage.

[0060] As shown in Fig. 4(b), in the liquid storage container 1A of the first embodiment, movement suppression means 90A that suppresses movement of the shaft-shaped portion 53 relative to the neck portion 3a includes the lower flange piece 56 and the fins 71-74. The lower flange piece 56 and the fins 71-74 correspond to the "protruding portion" in the present invention. Even if an external force acts to move the inner pouch body 2 in the axial direction of the shaft-shaped portion 53 (up and down) relative to the exterior body 3, the lower flange piece 56 and the fins 71-74 engage with the neck portion 3a, thereby suppressing movement of the inner pouch body 2 in the axial direction of the shaft-shaped portion 53 relative to the exterior body 3 (although slight movement in the up and down direction is possible due to elastic deformation of the fins 71-74).

[0061] As shown in FIG. 4(b), the movement suppression means 90A includes non-circular engagement portions 80a-80e (see FIGS. 5(a)-(e)). Even if an external force acts to rotate the inner pouch 2 around the axis of the shaft-shaped portion 53 relative to the outer casing 3, the non-circular engagement portions 80a-80e cause the shaft-shaped portion 53 and the neck portion 3a to interfere with each other so as to restrict the relative rotation. Therefore, the inner pouch 2 can be prevented from rotating around the axis of the shaft-shaped portion 53 relative to the outer casing 3. There is a slight amount of play between the shaft-shaped portion 53 and the neck portion 3a around the axis of the shaft-shaped portion 53, allowing slight rotation of the inner pouch 2 around the axis of the shaft-shaped portion 53 relative to the outer casing 3.

[0062] According to the liquid storage container 1A of the first embodiment, the shaft-like portion 53 formed on the spout 10A of the inner pouch 2 is covered by the neck portion 3a of the outer pouch 3, and the movement suppressing means 90A suppresses movement of the shaft-like portion 53 relative to the neck portion 3a. Therefore, even if the inner pouch 2 attempts to move relative to the outer pouch 3 in the axial direction and around the axis of the shaft-like portion 53, the movement suppressing means 90A can suppress the relative movement of the inner pouch 2 with respect to the outer pouch 3. Therefore, even if an external force acts to move the inner pouch 2 relative to the outer pouch 3, the movement suppressing means 90A can suppress the relative movement of the inner pouch 2 with respect to the outer pouch 3. Furthermore, according to the liquid storage container 1A, the inner bag body 2 is not completely fixed to the outer body 3, and slight relative movement of the inner bag body 2 to the outer body 3 is permitted due to the play between the shaft-shaped portion 53 and the neck portion 3a and the elastic deformation of the shaft-shaped portion 53 (each of the fin pieces 71 to 74) and the neck portion 3a.Therefore, the repeated impact force caused by vibrations during transportation is mitigated by the slight relative movement between the shaft-shaped portion 53 and the neck portion 3a, thereby preventing damage that would occur if glue were used.

[0063] As shown in FIG. 1(a), in the liquid storage container 1A of the first embodiment, the movement suppression means 90A further includes a band material 110 that tightly binds the shaft portion 53 of the spout 10A via the neck portion 3a.

[0064] In the liquid storage container 1A, when the shaft-shaped portion 53 is tightly bound via the neck portion 3a by the band material 110 attached to the neck portion 3a, the neck portion 3a and the shaft-shaped portion 53 are frictionally engaged, so that even if an external force acts to move the inner pouch 2 relative to the outer packaging body 3, the relative movement of the inner pouch 2 with respect to the outer packaging body 3 can be suppressed. Note that if the binding force of the band material 110 can be sufficiently ensured, the fin portion 53b of the shaft-shaped portion 53 may be omitted, and the band material 110 may be used to tightly bind the shaft-shaped portion main body 53a via the neck portion 3a. In this case, the structure of the spout 10A can be simplified.

[0065] In the liquid storage container 1A, a strip-shaped sheet 115 is wrapped around and attached to the body 3c of the exterior body 3. This reinforces the exterior body 3, suppresses deformation of the exterior body 3, and allows the shape of the container to be stably maintained. Note that the embodiment is not limited to wrapping the sheet 115 around the body 3c, and the sheet 115 may be partially attached so as to straddle the seam between the one-side pulp molded product 30 and the other-side pulp molded product 40 in the body 3c.

[0066] <Nullification of movement restriction measures> Movement suppression means 90A is disabled as shown in Fig. 6 after band material 110 attached to neck portion 3a and sheet 115 attached to body portion 3c are removed. Fig. 6 is an explanatory diagram of disabling movement suppression means 90A. As shown in Fig. 6, movement suppression means 90A shown in Fig. 4(b) is disabled by either or both of rotating spout 10A around shaft-shaped portion 53 relative to exterior body 3 with a specified torque T2 or more, and pulling spout 10A in the axial direction of shaft-shaped portion 53 relative to exterior body 3 with a specified pulling force F or more.

[0067] As shown in Figure 6, when the spout 10A is rotated relative to the outer casing 3 around the shaft-shaped portion 53 with a torque equal to or greater than the specified torque T2, the fin pieces 71 to 74 rotate around the shaft-shaped portion main body 53a, and as the fin pieces 71 to 74, which were in a position protruding in the long axis direction of the neck portion 3a, which has an elliptical cross section before the rotation, change to a position protruding in the short axis direction as they rotate, a pressing force is applied from the fin pieces 71 to 74 to the one-side pulp molded product 30 and the other-side pulp molded product 40 from the inside to the outside of the neck portion 3a. As a result, as shown in Figure 6, the one-side first insertion piece 36 comes out of the other-side first catch portion 43, and the engagement of the one-side first insertion piece 36 with the one-side first receiving piece 41 is released.Similarly, although not shown, when the other-side first insertion piece 46 comes out of the one-side first catch portion 33 and the engagement of the other-side first insertion piece 46 with the one-side first receiving piece 31 is released, the neck portion 3a and shoulder portion 3b are disassembled (destroyed), and the function of suppressing relative movement with respect to the shaft-shaped portion 53 can no longer be maintained, and the movement suppression means 90A is disabled.

[0068] Furthermore, when spout 10A is pulled out from exterior body 3 in the axial direction of shaft-shaped portion 53 with a pull-out force F or greater, on the inner side of neck 3a, where the major and minor axes gradually become smaller as they move upward, as fins 71-74 move upward along the axial direction of shaft-shaped portion main body 53a, a pressing force is applied from the inner side of neck 3a to the outer side, particularly from third fin 73 and fourth fin 74, which have a relatively large protrusion amount, to one-side pulp molded product 30 and the other-side pulp molded product 40. As a result, just as in the case where spout 10A is rotated around shaft-shaped portion 53 relative to exterior body 3 with a torque T2 or greater, neck 3a is disassembled (destroyed), and the function of suppressing relative movement with respect to shaft-shaped portion 53 is no longer retained, and movement suppression means 90A is disabled.

[0069] In this way, the movement suppression means 90A can be disabled by simple operations such as rotating the spout 10A relative to the outer casing 3 around the axial portion 53 with a specified torque T2 or more, and / or pulling the spout 10A out of the outer casing 3 in the axial direction of the axial portion 53 with a specified pulling force F or more.

[0070] In the liquid storage container 1A, when the opening torque applied to the cap 15 when opening the spout 51 is T1, the specified torque T2 when disabling the movement suppressing means 90A is set to be greater than the opening torque T1 (T2>T1). As a result, when the opening torque T1 is applied to the cap 15, the movement suppressing means 90A suppresses the inner pouch 2 from rotating relative to the outer packaging 3 around the shaft portion 53 of the spout 10A. Therefore, when the opening torque T1 is applied to the cap 15, a reaction force can be secured against the inner pouch 2, allowing the cap 15 to be opened smoothly.

[0071] Here, for example, if the opening torque T1 is about 10 kgf cm (≈ 0.98 N m), it is preferable that the specified torque T2 be set to 20 kgf cm (≈ 1.96 N m) or more. On the other hand, with regard to the specified pull-out force F, for example, if the capacity of the liquid storage container 1A (the capacity of the pouch 5 of the inner bag body 2) is 1 L and the safety factor is about 3, it is preferable that it be about 3 kgf (≈ 29.4 N).

[0072] When the movement suppressing means 90A is disabled as described above, the neck portion 3a and shoulder portion 3b of the exterior body 3 are disassembled, and the one-side pulp molded product 30 and the other-side pulp molded product 40 are separated at these portions. As a result, the spout 10A and the pouch 5 can be pulled out of the exterior body 3 through this separated portion, and the inner bag body 2 can be easily separated from the exterior body 3. Therefore, for example, when disposing of the liquid storage container 1A, the inner bag body 2 and the exterior body 3 can be easily separated and discarded by destroying the movement suppressing means 90A.

[0073] The pouch 5 of the inner bag 2 is flexible, so when discarded, the pouch 5 can be folded to easily reduce the volume of waste. The outer bag 3 is also made of a molded body made from pulp, which is biodegradable and recyclable in nature. Therefore, the entire liquid storage container 1A is environmentally friendly.

[0074] Second Embodiment 7 is a perspective view of a liquid storage container 1B according to a second embodiment of the present invention. In the second embodiment, parts that are the same as or similar to those in the first embodiment are simply given the same reference numerals in the drawings, and detailed descriptions thereof will be omitted. The following description will focus on parts unique to the second embodiment (the same applies to the third and subsequent embodiments).

[0075] In the liquid storage container 1B of the second embodiment, the neck 3a has a cylindrical straight portion 101 that extends along the axial direction of the shaft portion 53 of the spout 10B and covers the shaft portion 53, and also has a truncated cone portion 102 that gradually increases in diameter from the straight portion 101 toward the shoulder portion 3b. The body 3c is cylindrical and connected to the neck 3a via the shoulder portion 3b. The bottom 3d is circular in plan view and slightly bulges upward.

[0076] Fig. 8 is a perspective view of a spout 10B used in a liquid storage container 1B of the second embodiment. As shown in Fig. 8, in the shaft-shaped portion 53 of the spout 10B, a pair of key-shaped protrusions 103 protrude from a pair of abutment surfaces 63, instead of the fin portions 53b (fin pieces 71 to 74) in the shaft-shaped portion 53 of the spout 10A of the first embodiment. In addition, a stopper 77 is interposed between the shaft-shaped portion main body 53a and the seal portion 54 to position the pouch 5 with respect to the seal portion 54 when the pouch 5 is bonded to the seal portion 54.

[0077] Fig. 9 is a cross-sectional end view taken along the arrows GG in Fig. 7. As shown in Fig. 9, a pair of engagement holes 104, into which a pair of key-shaped protrusions 103 penetrate and engage, are formed in each of the one-side pulp molded product 30 and the other-side pulp molded product 40 in the straight portion 101 of the neck 3a of the exterior body 3. A slight gap is provided between the key-shaped protrusions 103 and the engagement holes 104. This allows slight relative movement of the inner pouch 2 with respect to the exterior body 3.

[0078] In the second embodiment of the liquid storage container 1B, the movement suppression means 90B includes a pair of key-shaped protrusions 103 formed on the shaft-shaped portion 53 and a pair of engagement holes 104 formed in the neck portion 3a so as to engage with the key-shaped protrusions 103.

[0079] In the liquid storage container 1B configured as described above, the shaft-shaped portion 53 and the neck portion 3a are locked together by the engagement of a pair of engagement holes 104 with a pair of key-shaped protrusions 103, so that even if an external force acts to move the inner bag body 2 relative to the outer body 3 around the axis of the shaft-shaped portion 53 and / or in the axial direction (up and down), the relative movement of the inner bag body 2 relative to the outer body 3 can be suppressed.

[0080] Third Embodiment FIG. 10 shows essential parts of a liquid storage container 1C according to a third embodiment of the present invention. FIG. 10(a) is an external perspective view of the upper part of the liquid storage container 1C. FIG. 10(b) is a cross-sectional end view taken along the arrows HH in FIG. 10(a). As shown in FIGS. 10(a) and 10(b), the liquid storage container 1C of the third embodiment uses a spout 10C having a pair of retaining portions 105 that retain the straight portion 101 of the neck portion 3a of the exterior body 3. Otherwise, the liquid storage container 1C is basically configured similarly to the liquid storage container 1B of the second embodiment. In the liquid storage container 1C of the third embodiment, the movement suppressing means 90C further includes a pair of retaining portions 105 in addition to a pair of key-shaped protrusions 103 and a pair of engagement holes 104.

[0081] As shown in Figure 10(b), the holding portion 105 has a pair of support pieces 106 that protrude radially outward from the shaft-shaped portion main body 53a so as to be sandwiched between the one-side pulp molded product 30 and the other-side pulp molded product 40 in the straight portion 101, and a pressing piece 107 that presses the pulp molded products 30, 40 by sandwiching them between the shaft-shaped portion main body 53a.

[0082] It goes without saying that the liquid storage container 1C of the third embodiment configured as described above can achieve the same effects as the liquid storage container 1B of the second embodiment. Furthermore, since the liquid storage container 1C of the third embodiment is provided with the holding portion 105 that holds the straight portion 101, the engagement state between the pair of key-shaped protrusions 103 and the pair of engagement holes 104 is stably maintained by the holding portion 105, and the relative movement suppression effect of the movement suppression means 90C can be stably achieved.

[0083] The liquid storage container of the present invention has been described above based on several embodiments, but the present invention is not limited to the configurations described in the above embodiments, and the configuration can be changed as appropriate within the scope of the spirit of the present invention, such as by appropriately combining the configurations described in each embodiment.

[0084] (Another embodiment 1) FIG. 11 is a cross-sectional view of the contact area between the exterior body 3 and the shaft-shaped portion 53, illustrating another example (1) of the non-circular engagement portion. In the first embodiment, as shown in FIGS. 5(a) to 5(e), the neck portion 3a has an elliptical cross-sectional shape. However, this is not limited thereto. For example, as shown in FIGS. 11(a) to 11(e), the neck portion 3a may have a boat-shaped cross-sectional shape. This allows for closer contact between the fins 71 to 74 and the neck portion 3a than in the example shown in FIGS. 5(a) to 5(e), and more effectively prevents the inner pouch 2 from rotating relative to the exterior body 3 around the axis of the shaft-shaped portion 53. Furthermore, compared to the example shown in FIGS. 5(a) to 5(e), this provides a better anti-slip effect when gripping the exterior body 3 and opening the cap 15, making it easier to open the cap 15.

[0085] (Alternative embodiment 2) FIG. 12 is a cross-sectional view of the contact area between the exterior body 3 and the shaft-shaped portion 53, illustrating another example (2) of the non-circular engagement portion. Regarding the non-circular engagement portion of the present invention, the cross-sectional shapes of the shaft-shaped portion 53 and the neck portion 3a are not limited to those shown in FIGS. 5(a) to 5(e). For example, as shown in FIGS. 12(a) to 12(c), non-circular engagement portions 80f to 80h may be employed in which the cross-sectional shapes of the shaft-shaped portion 53 and the neck portion 3a are both formed to be non-circular. The non-circular engagement portion 80f shown in FIG. 12(a) is an example in which the cross-sectional shapes of the shaft-shaped portion 53 and the neck portion 3a are both formed to be elliptical. The non-circular engagement portion 80g shown in FIG. 12(b) is an example in which the cross-sectional shapes of the shaft-shaped portion 53 and the neck portion 3a are both formed to be rounded rectangular (rounded rectangular with long corners in the left-right direction in the figure). The non-circular engagement portion 80h shown in Figure 12(c) is an example in which the cross-sectional shape of the shaft-shaped portion 53 is formed in an elliptical shape, and the cross-sectional shape of the neck portion 3a is formed in a diamond shape that is relatively long in the left-right direction in the figure.

[0086] (Alternative embodiment 3) FIG. 13 is a diagram showing another example (1) of a movement suppressing means including a recess 121 or a protrusion 123 formed on the shaft-shaped portion 53 and neck engaging portions 122, 124. In the second embodiment, the movement suppressing means 90B includes a pair of key-shaped protrusions 103 formed on the shaft-shaped portion 53 and a pair of engaging holes 104 formed on the neck portion 3a so as to engage with the key-shaped protrusions 103. However, this is not limited thereto. For example, movement suppressing means 90D, 90E shown in FIGS. 13(a) and 13(b) may also be employed. The movement suppressing means 90D shown in FIG. 13(a) includes a recess 121 formed on the shaft-shaped portion 53 and a protrusion 122 formed on the neck portion 3a so as to engage with the recess 121. The movement suppressing means 90E shown in FIG. 13(b) includes a protrusion 123 formed on the shaft-shaped portion 53 and a recess 124 formed on the neck portion 3a so as to engage with the protrusion 123.

[0087] (Alternative embodiment 4) FIG. 14 is a diagram showing another example (2) of movement suppression means formed by recesses 125 and protrusions 126 formed on the shaft-shaped portion 53 and neck engagement portions 127 and 128. Instead of the movement suppression means 90D and 90E shown in FIGS. 13(a) and 13(b), for example, movement suppression means 90F shown in FIG. 14 may be employed. The movement suppression means 90F shown in FIG. 14 includes a plurality of recesses 125 and protrusions 126 alternately formed in the circumferential direction of the shaft-shaped portion 53, and a plurality of protrusions 127 and recesses 128 formed on the neck portion 3a so as to engage with the plurality of recesses 125 and protrusions 126, thereby providing a spline fitting structure. Although not shown in the drawings, a serration fitting structure may be used instead of the spline fitting structure.

[0088] (Alternative embodiment 5) Fig. 15 is an explanatory diagram of a modified example of spout 10A. As shown in Fig. 15, in the case where neck 3a of exterior body 3 has, for example, straight portion 101 and frusto-conical portion 102 whose diameter gradually increases from straight portion 101 toward shoulder portion 3b, spout 10D can be preferably used in which fin portion 53b in spout 10A used in the first embodiment is omitted and instead frusto-conical skirt portion 53c that engages with the inner surface of frusto-conical portion 102 is integrally connected to the other end (lower end) of shaft main body 53a.

[0089] (Alternative embodiment 6) Although spouts 10A to 10D are integrally molded resin parts, the present invention is not limited to this and some parts (for example, flange portion 52) may be formed from separate parts. Furthermore, flange portion 52 of spouts 10A to 10D may have, for example, a bellows structure that can contract in diameter before being set in exterior body 3 and expand in diameter when set.

[0090] (Alternative embodiment 7) In the above embodiment, an example is shown in which the outer casing 3 is formed by combining multiple (two in this example) pulp molded products 30, 40, but this is not limited to this and it may also be formed by folding and molding a sheet material such as cardboard.

[0091] (Alternative embodiment 8) In the above embodiment, the exterior body 3 may be covered with a shrink film to improve water resistance and strength. [Industrial Applicability]

[0092] The liquid storage container of the present invention can be used to store, for example, alcoholic beverages (sake, shochu, wine, etc.), soft drinks, fruit juice, coffee, tea, water, dairy drinks, cooking oil, liquid seasonings (soy sauce, mirin, vinegar, etc.), etc. [Explanation of symbols]

[0093] 1A~1D Liquid storage container 2 Inner bag 3. Exterior body 3a Neck 3c Torso 5 pouches 10A~10D Spout 15 Cap 51 Spout part 53 Shaft 56 Lower flange piece (extension) 71~74 Fin piece (extension part) 80a~80h Non-circular engagement part 90A~90F Movement restraint means 103 Key-shaped protrusion 104 Engagement hole (neck engagement part) 110 Band material 115 seats 121 recess 122 Convex portion (neck engagement portion) 123 Convex 124 Recess (neck engagement portion) 125 recess 126 Convex 127 Convex portion (neck engagement portion) 128 Recess (neck engagement part)

Claims

1. An inner bag in which contents are stored; An outer body attached to the inner bag body; A liquid storage container comprising: The inner bag has a spout having an axial portion formed therein, The exterior body has a neck portion that covers the shaft portion, A liquid storage container comprising a movement suppressing means for suppressing movement of the shaft portion relative to the neck portion.

2. The exterior body is attached to the inner bag body so as to abut at least the shaft-shaped portion, The liquid storage container described in claim 1, wherein the movement suppression means includes a non-circular engagement portion in which the cross-sectional shape of the shaft-shaped portion and the cross-sectional shape of the neck portion are both formed in a shape that is not a perfect circle at a cross-section at the contact point between the shaft-shaped portion and the outer casing.

3. The liquid storage container according to claim 1 , wherein the movement suppressing means includes a protruding portion that protrudes from the spout in a direction intersecting an axial direction of the shaft-shaped portion and engages with the neck portion.

4. The liquid storage container according to claim 1 , wherein the movement suppressing means includes a recess and / or a protrusion formed on the shaft-shaped portion, and a neck engaging portion formed on the neck portion so as to engage with the recess and / or the protrusion.

5. 2. The liquid storage container according to claim 1, wherein the movement suppressing means includes a band material that binds the shaft portion tightly via the neck portion.

6. 6. The liquid storage container according to claim 1, wherein the inner bag body is separable from the outer bag body by disabling the movement suppression means.

7. The disabling of the movement suppression means is (a) rotating the spout around the shaft portion relative to the exterior body with a torque equal to or greater than a specified torque; (b) pulling the spout out of the exterior body in the axial direction of the shaft-shaped portion with a specified pulling force or more.

7. The liquid storage container according to claim 6, wherein the liquid storage container is provided with one or both of the above.

8. The spout has a spout portion extending in the axial direction of the shaft-shaped portion, A cap that can open and close the spout portion by a relative rotation operation with respect to the spout portion is attached to the spout portion, When the opening torque applied to the cap when opening the spout portion is T1 and the specified torque is T2, 8. The liquid storage container according to claim 7, wherein the specified torque T2 is set to be greater than the opening torque T1 (T2>T1).

9. The inner bag body is formed by bonding the spout to a flexible pouch, 6. The liquid storage container according to claim 1, wherein the exterior body is a molded body made of paper and / or pulp.

10. The exterior body has a body portion connected to the neck portion, 6. The liquid storage container according to claim 1, wherein a sheet is wrapped around or attached to the body portion.

Images