Container with spout

Abstract

To provide a container with a spout in which oxygen is prevented from entering from outside of the container and an oxygen remaining space is hard to be formed around the spout, as a result, oxygen is prevented from entering a storage part permeating the spout, and oxidation of a stored object can be prevented.SOLUTION: A container 10 with a spout comprises: a storage part 12 formed by a container wall 11 comprising a flexible packaging material having gas barrier properties; and a spout 20 having a three-dimensional shape joined to the container wall 11. The spout 20 comprises: a spout body 22 joined to the container wall 11; and a closing part 23 detachably arranged at the spout body 22 so as to close the spout body 22. A top part and a side periphery of the closing part 23 are covered with a covering material 21, comprising the flexible packaging material having gas barrier properties, so as to be in close contact with each other, and the covering material 21 and the container wall 11 are arranged while superposed at the side periphery of the spout 20 so that they continue to each other.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a spouted container.

[0002] 2. Description of the Related Art Flexible spouted containers in which contents are contained and sealed have been known in the past that have improved gas barrier properties at the spout.

[0003] For example, Patent Document 1 below proposes a spout or cap formed with a gas barrier intermediate layer. Patent Document 2 below proposes a spout-equipped packaging bag in which the main film of the packaging bag, which has gas barrier properties, is extended to cover the spout. Patent Document 3 below further proposes a spout-equipped bag body in which a spout member, which has a flat base portion provided with a filling tube portion and a tip portion blocked with an opening member, is disposed within a pair of films having a higher gas barrier property than the spout member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-162272 A [Patent Document 2] JP 2014-218274 A [Patent Document 3] JP 2016-88527 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in conventional containers, although it is possible to prevent oxygen from entering the container from the outside, oxygen remains around the spout. For example, in Patent Document 1, the top surface of the spout, which has poor gas barrier properties, is covered with a cap, but oxygen remains inside the cap due to the existence of space. In Patent Document 2, oxygen remains inside the extension of the main body film that contains and covers the spout due to the existence of space. In Patent Document 3, oxygen remains inside the pair of films that cover the flat wing portion of the opening member due to the existence of space.

[0006] Therefore, after the contents are contained and sealed, the oxygen remaining around the spout gradually passes through the spout and enters the containing section, causing the contents to be gradually oxidized. In particular, when the spout has a three-dimensional shape, the surrounding space is large and the amount of remaining oxygen is large, so oxidation due to oxygen penetrating the spout and entering the container is likely to occur.

[0007] Therefore, the objective of the present invention is to provide a container with a spout that can prevent oxygen from entering from outside the container and that is less likely to form a space in which oxygen remains around the spout, thereby preventing oxygen from passing through the spout and entering the storage section, thereby preventing oxidation of the stored contents. [Means for solving the problem]

[0008] The spout-equipped container according to claim 1 of the present invention which solves the above-mentioned problems is a spout-equipped container comprising a storage section formed by a container wall made of a flexible packaging material having gas barrier properties, and a three-dimensional spout joined to the container wall, wherein the spout comprises a spout body joined to the container wall, and a closing section removably arranged on the spout body so as to close the spout body, the upper part and side periphery of the closing section being tightly covered by a covering material made of a flexible packaging material having gas barrier properties, and the covering material is arranged overlapping the side periphery of the spout so that the covering material and the container wall are continuous.

[0009] According to the present invention, a three-dimensional spout joined to a container wall includes a spout body and a closure portion removably disposed on the spout body, and the upper and side periphery of the closure portion are covered with a covering material, so that the closure portion can be covered with a covering material separate from the container wall, and the covering material can be easily disposed along the closure portion. Therefore, the covering material can be tightly attached to cover the closure portion, and no gap is generated between the covering material and the closure portion. Furthermore, since the covering material adhered to the closure portion and the container wall forming the storage portion are arranged so as to be continuous and overlapping, the entire spout joined to the container wall can be reliably covered with the gas barrier packaging material, and the entire container including the storage portion and the spout can be surrounded by the gas barrier packaging material. This prevents oxygen from entering the container from outside, and since no oxygen remains around the spout, it prevents oxygen from passing through the spout and entering the storage section, thereby reliably preventing the contents from oxidizing.

[0010] The spouted container according to claim 2 of the present invention is characterized in that the covering material covers the closing portion, and the container wall extends to at least the side periphery of the closing portion and is arranged to overlap the covering material. In this way, the boundary between the spout body and the closing part can be covered only by the container wall, and there is no need to overlap the container wall with the covering material, making it easier to break the packaging material covering the boundary and easier to open.

[0011] The spouted container according to claim 3 of the present invention is characterized in that the side periphery of the spout body on the closure side and the side periphery of the closure part on the spout body side are disposed adjacent to each other without any step. In this way, the side periphery of the spout body and the side periphery of the closing part, which are continuous and stepless, can be smoothly and continuously covered with the gas barrier packaging material in close contact. If a step is formed at the boundary between the spout body and the closing part, it is not easy to make the packaging material adhere to the spout near the boundary. If the spout is continuous without any steps, no gaps will be formed due to the steps. This makes it difficult for gas to remain between the packaging material and the spout, and prevents oxygen from remaining near the three-dimensional spout.

[0012] The spout-equipped container described in claim 4 of the present invention is characterized in that the closure portion is screwed onto the spout body and a packaging material is joined to the closure portion, and the packaging material is configured to be breakable by rotating the closure portion relative to the spout body. In this way, the closure can be easily rotated together with the packaging material relative to the spout body, whereby the packaging material can be broken and the closure can be detached from the spout body, thereby facilitating the operation of opening the spout.

[0013] In the spout-equipped container described in claim 5 of the present invention, the spout body and the closure portion have a boat-shaped shape when viewed in plan, and at least one of the longitudinal ends when viewed in plan may have a plate-shaped protruding piece for rotation protruding therefrom. In this way, when an operator grasps the closure from outside the packaging material and rotates it relative to the spout body, the operator can grasp and rotate the rotation protruding piece, making it easier to open the spout. Moreover, because the rotation protruding piece is plate-shaped, the gas barrier packaging material can be tightly attached to the periphery to cover it, without any gaps being formed.

[0014] The spouted container described in claim 6 of the present invention is characterized in that the closure portion has a boat-shaped configuration when viewed from above and a concave shape when viewed from the side, with the upper portion gradually decreasing in thickness toward the middle portion, and the upper portion and side edges of the closure portion are tightly and tightly covered with a single sheet of covering material without any gaps. In this way, it is easy to cover the closure, which is boat-shaped in plan view, with a single sheet of packaging material. Here, the thickness of the concave shape gradually decreases to correspond to the boat shape, so even if the upper part and the sides of the closure are covered with a single sheet of covering material, it is possible to prevent wrinkles from occurring and to cover closely without gaps. This makes it possible to prevent gaps from occurring between the closure and the covering material, and prevents oxygen from remaining around the spout.

[0015] The spouted container according to claim 7 of the present invention is characterized in that the container contains an object that changes due to oxidation. In this way, oxygen will not penetrate through the spout and enter the storage section after the contents are placed inside and sealed as described above, and changes to the contents due to oxygen that penetrates after sealing can be prevented. Effect of the Invention

[0016] The spouted container of the present invention can prevent oxygen from entering the container from outside, and is less likely to form a space around the spout in which oxygen remains.As a result, it is possible to provide a spouted container that can prevent oxygen from passing through the spout and entering the storage section, thereby preventing oxidation of the stored contents. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a front view of a spouted container according to an embodiment of the present invention. [Diagram 2] 1A and 1B show a spout of a spout-equipped container according to an embodiment of the present invention, where (a) is a perspective view and (b) is a vertical cross-sectional view. [Diagram 3] 3A and 3B show a spout body of the spout in FIG. 2, in which FIG. 3A is a perspective view and FIG. [Figure 4] 3A and 3B show a closure part of the spout in FIG. 2, in which FIG. 3A is a perspective view and FIG. [Diagram 5] 5(a) to 5(c) are views illustrating a method for covering the closure part of the spout with a covering material according to the embodiment of the present invention. [Figure 6] 1(a) to 1(c) are diagrams illustrating a method for producing a covering material for covering a closure portion of a spout according to an embodiment of the present invention, and 1(d) is a diagram showing the produced covering material. [Figure 7] 1(a) to 1(c) are views illustrating a method for producing a spouted container according to an embodiment of the present invention. [Figure 8]1A to 1C are diagrams illustrating a method of using a spouted container according to an embodiment of the present invention. [Figure 9] FIG. 13 is a diagram for explaining a modified embodiment of the present invention, illustrating a method in which the closure portion is separated from the spout body, covered with a covering material, and then combined with the spout body. [Figure 10] FIG. 13 is a perspective view for explaining a modified example of the embodiment of the present invention, showing an example in which a pair of rotation protrusion pieces is not provided on the closing portion. [Figure 11] FIG. 13 is a perspective view illustrating a modified example of an embodiment of the present invention, in which a pair of rotation protrusions are provided on a spout body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 shows a spouted container of this embodiment. The spouted container 10 comprises a storage section 12 formed by a container wall 11 made of a flexible packaging material having gas barrier properties, a three-dimensional spout 20 joined to the container wall 11, and a covering material 21 made of a flexible packaging material having gas barrier properties that tightly covers a closed section 23 of the spout 20.

[0019] The storage section 12 is formed by a pair of container walls 11 sealed at their outer periphery by a peripheral seal 13 . The storage section 12 contains an object that changes due to oxidation. Such an object is not particularly limited to low-viscosity liquids such as various solutions, mixed liquids, dispersions, and solid-liquid mixed liquids, or high-viscosity viscous liquids and gel-like substances. For example, the object may be a substance that is stored in a fluid state and becomes semi-solid as its fluidity decreases after sealing, and that changes due to oxidation.

[0020] The packaging material constituting the container wall 11 of the storage section 12 is made of a flexible resin sheet having gas barrier properties, and may be a laminated sheet provided with a gas barrier layer such as an aluminum layer. A laminated sheet provided with a gas barrier layer has poor elasticity, but can achieve high gas barrier performance. On the other hand, the innermost layer is provided with a sealant layer made of a resin that can stably store the contents and can weld the spout 20.

[0021] As shown in Figures 2(a)(b) to 4(a)(b), the spout 20 comprises a spout body 22 joined to the container wall 11, and a blocking portion 23 arranged adjacent to and in close contact with the spout body 22 so as to block the spout body 22. The spout body 22 and the blocking portion 23 are made of a resin molded body, and the two may be molded integrally, but in this embodiment, the spout body 22 and the blocking portion 23 are molded separately and then combined integrally.

[0022] As shown in Figures 3(a) and (b), the spout body 22 is integrally molded with a boat-shaped portion 24 which has a boat-shaped shape in a plan view and has the container wall 11 tightly joined to its lateral periphery, a large-diameter protruding portion 25 which protrudes upward from the boat-shaped portion 24 and has a male thread 25a which can be screwed into the closure portion 23, and a connecting portion 26 which protrudes upward from the protruding portion 25 and is formed with a smaller diameter than the protruding portion 25 and has a locking structure 26a which can be used to connect other members when the spouted container is used.

[0023] 1, the sides of the boat-shaped portion 24 are covered by the container wall 11, and are continuously welded and joined all around to the inner surface of the container wall 11. The welded surface may be provided with a recess 27 or the like to such an extent that residual oxygen is substantially negligible. The connecting portion 26 is provided with a locking structure for locking the tube during use. This locking structure may be one that complies with ISO80369-3 and can be connected to an ISO standard tube connector or the like.

[0024] A hollow portion 28 having a lower end that opens into the storage portion 12 is provided inside the boat-shaped portion 24 and the protruding portion 25. A through hole 29 that penetrates vertically is provided inside the connecting portion 26. The through hole 29 opens into the hollow portion 28 at its lower end, and the opening at its upper end is blocked by the blocking portion 23.

[0025] As shown in Figures 4(a) and (b), closing portion 23 is a resin molded body disposed at the end of spout 20, and at least the end of its external shape has a boat-like shape in plan view. Closing portion 23 of this embodiment includes a boat-shaped portion 31 having a boat-like shape as a whole in plan view, and a thin plate-like pivot protruding piece 31a integrally molded so as to protrude laterally from both longitudinal ends of boat-shaped portion 31. Recesses 27 such as grooves similar to those of spout body 22 are provided around the sides of boat-shaped portion 31. A concave portion 32 having a concave shape in side view and formed so that the thickness gradually decreases toward the middle portion is provided at the upper portion of the blocking portion 23. In this embodiment, the concave portion 32 is composed of a pair of flat surfaces inclined toward the middle portion.

[0026] On the other hand, the inside of the blocking portion 23 is provided with a screw-type portion 33 having a female thread 33a that can be screwed into the male thread 25a of the protrusion 25 of the spout body 22, a storage portion 34 having a locking portion 34a that can be stored and locked by inserting and screwing the connecting portion 26 of the spout body 22, and a closure portion 35 that is positioned in the through hole 29 of the spout body 22 and liquid-tightly blocks the through hole 29 when attached to the spout body 22 by the screw-type portion 33 and the storage portion 34, thereby preventing the contents from adhering to the locking structure 26a.

[0027] The closure portion 35 may be molded integrally with the screw-on portion 33 and the storage portion 34, but in this embodiment, in order to improve the molding accuracy, it has an insertion portion 36 that is inserted into the through hole 29, and a through hole 37 that penetrates the insertion portion 36 from top to bottom and has an upper end sealed by the covering material 21.

[0028] Spout body 22 and closure portion 23 are combined and integrated by screwing threaded portion 33 of closure portion 23 into protruding portion 25 of spout body 22. They can be integrated by rotating them in one direction relative to spout body 22, and can be separated by rotating them in the other direction. In the integrated state, the boat-shaped portion 24 of the spout body 22 and the boat-shaped portion 31 of the blocking portion 23 are arranged so as to overlap in a planar view in the same orientation, and this orientation is maintained by pressing the spout body 22 and the blocking portion 23 against each other.

[0029] In this state, it is preferable that the side periphery of closure portion 23 on the spout body 22 side and the side periphery of closure portion 23 side of spout body 22 are molded to the same shape so that their external shapes are arranged adjacent to each other without any step, and in this embodiment, the entire external shape of closure portion 23 has the same boat-shaped shape in plan view as boat-shaped portion 24 of spout body 22. Therefore, when closure portion 23 is attached to spout body 22 and arranged adjacent to it, the entire spout 20 presents a columnar external shape with a constant boat-shaped shape that is substantially continuous over the entire length.

[0030] The covering material 21 is made of a packaging material having gas barrier properties using a flexible resin, and is welded to the surface of the closing portion 23 to tightly and tightly cover the upper part and side periphery of the closing portion 23. In this embodiment, the upper part and side periphery of the closing portion 23 are covered with one sheet of covering material 21. The packaging material constituting the covering material 21 is made of a flexible resin sheet having gas barrier properties, and may be a laminated sheet provided with a gas barrier layer such as an aluminum layer. A laminated sheet provided with a gas barrier layer has poor elasticity, but can achieve high gas blocking performance. The innermost layer is provided with a sealant layer made of a resin that can be welded to the blocking portion 23, and the outermost layer is provided with a sealant layer made of a resin that can be welded to the innermost layer of the container wall 11 constituting the storage portion 12.

[0031] As shown in FIG. 1 and FIGS. 2(a) and (b), the covering material 21 is arranged overlapping the container wall 11 so as to be continuous with the container wall 11 around the side of the spout 20. In this embodiment, the container wall 11, which is arranged extending to the side periphery of the closure portion 23, is arranged to cover and overlap the outer surface of the covering material 21 arranged around the side periphery of the closure portion 23 from the outside. The container wall 11 is also joined to the closure portion 23 via the covering material 21 in a state where it is joined to the spout body 22.

[0032] When the spout 20 is covered by the container wall 11 and the covering material 21, the covering material 21 is tightly joined to the upper and side periphery of the boat-shaped portion 31 of the closure portion 23 and the pivot protrusion 31a, and the upper end side of the container wall 11 is tightly joined to the side periphery of the boat-shaped portion 24 of the spout body 22, and further the extended portion of the container wall 11 is tightly joined to the covering material 21 joined to the side periphery of the boat-shaped portion 31 of the closure portion 23 and the pivot protrusion 31a. A notch 14, which serves as the starting point for opening, is provided at a position corresponding to the boundary 38 between the boat-shaped portion 24 of the spout body 22 and the boat-shaped portion 31 of the closure portion 23 on both side edges of the extended portion of the container wall 11, and further, an easy-to-break line 15 is provided along the boundary of the extended portion of the container wall 11 to make it easier to break.

[0033] Next, a method for producing such a spouted container 10 will be described. In this embodiment, first, a resin composite member 40 as shown in FIG. 5(c) is prepared in which the closing portion 23 of the spout 20 is covered with the covering material 21, and then this resin composite member 40 is used to manufacture a spouted container. 5(c), the resin composite member 40 includes a spout 20 made of a resin molded body in which a spout body 22 and a closing portion 23 are combined and a boat-shaped portion 31 is disposed at the end, and a covering material 21 that tightly covers the end face and both side surfaces of the boat-shaped portion 31. In this resin composite member 40, the upper part and the entire side periphery of the closing portion 23 are tightly covered by a single sheet of covering material 21.

[0034] In order to tightly cover the blocking portion 23 with the covering material 21 made of a single sheet, for example, the procedure shown in Figs. 5(a) to (c) can be followed. Here, a spout 20 is prepared by combining a pre-formed spout body 22 and a blocking portion 23 into one piece, and a sheet of covering material 21 formed into a rectangular shape corresponding to the blocking portion 23, as described below.

[0035] 5(a), the covering material 21 is aligned and placed in the recessed portion 32 formed in the upper part of the boat-shaped portion 31, and then heated and pressed with an upper heat-sealing die 41 having a shape corresponding to the recessed portion 32 to weld the covering material 21 in intimate contact with the entire upper part of the boat-shaped portion 31. At this time, the covering material 21 is also continuously welded to the upper ends of the pair of rotation protrusions 31a.

[0036] Then, as shown in Fig. 5(b), both end portions of the covering material 21 welded to the top surface of the boat-shaped portion 31 are bent so as to face both sides of the side periphery of the boat-shaped portion 31, and the end portions are aligned and positioned. The covering material 21 is sandwiched between the boat-shaped portion 31 and a pair of side periphery heat-sealing dies 42 having a shape corresponding to the side periphery of the boat-shaped portion 31, and heated and pressed to weld the covering material 21, thereby bonding the covering material 21 in intimate contact with the entire side periphery of the boat-shaped portion 31. At this time, welding is also continued onto both side surfaces of the pair of rotation protrusions 31a.

[0037] As a result, as shown in FIG. 5(c), a single sheet of covering material 21 can be welded tightly and without gaps around the upper and sides of the boat-shaped portion 31 without causing wrinkles or lifting, and this covering material 21 can also be used to weld the pair of rotation protrusions 31a, thereby producing the resin composite member 40.

[0038] In order to manufacture the resin composite member 40 using a single sheet of covering material 21, it is necessary to use a covering material 21 having a rectangular shape corresponding to the pre-formed boat-shaped portion 31. Here, the shape of the covering material 21 will be explained using Figures 6(a) to (d). As shown in Fig. 6(a), the planar shape of the boat-shaped portion 31 to be covered is approximated to a diamond shape. In this case, the shape of one side of the boat-shaped portion 31 relative to the central axis L in the longitudinal direction is a triangle at the top as shown in Fig. 6(b), and a parallelogram at both sides as shown in Fig. 6(c). Here, the width of boat-shaped portion 31 in a planar view is W, the thickness of boat-shaped portion 31 is T, the height at both ends of boat-shaped portion 31 is H, the height of concave portion 32 of boat-shaped portion 31 is h, and the width along the surface of concave portion 32 is Is. Then, the area of ​​the top and side portions is 1 / 2×T×W for the top surface and W / 2×(H+h) for one side surface. Therefore, the area of ​​the covering material 21 covering one half of the boat-shaped portion 31 on one side of the axis L is 2×H×W.

[0039] Therefore, as shown in Fig. 6(d), the covering material 21 needs to be roughly rectangular with a pair of side edges having a length of 2W, one of the other pair of side edges having a length of T+2h, and the other having a length of 2H. To form a rectangular piece of covering material 21, it is sufficient to set one length, T+2h, to be equal to the other length, 2H.

[0040] Next, a method for manufacturing the spouted container 10 using the resin composite member 40 thus produced will be described. First, a resin composite member 40 is prepared, which consists of a spout 20 in which only the closing portion 23 is covered with a covering material 21, and an intermediate body is prepared by opposing a pair of container wall sheet materials 43 and welding both side edges together with a peripheral seal 13. Then, as shown in FIG. 7( a ), the spout 20 , only the closing portion 23 of which is covered with the covering material 21 , is inserted between the container wall sheet materials 43 , and the entire spout 20 is disposed at the end between the container wall sheet materials 43 .

[0041] Next, as shown in FIG. 7( b ), with the entire spout 20 interposed between the container wall sheet materials 43 , the edge on one end is heat sealed over a width equal to or greater than the spout 20 . As a result, a pair of container wall sheet materials 43 are welded to the welding surfaces around the entire side periphery on both sides of boat-shaped portion 24 of spout body 22. The pair of container wall sheet materials 43 are also welded to the boat-shaped portion 31 and the entire rotation protrusions 31a on both ends of closure portion 23 so as to be continuous with spout body 22. Since covering material 21 tightly covers boat-shaped portion 31 and the rotation protrusions 31a on both ends of closure portion 23, covering material 21 on both surfaces of closure portion 23 is welded to the pair of container wall sheet materials 43.

[0042] Also, in the area where the spout 20 is not arranged, the container wall sheet materials 43 are abutted against each other with the same width and heat sealed. As a result, the entire edge where the spout 20 is located is welded and closed widely, continuing from the left and right peripheral seals 13 of the pair of container wall sheet materials 43, thereby forming the entire width of the peripheral seal 13 on the spout side. Thereafter, as shown by the dashed lines in FIG. 7(b), the left and right sides of spout 20 in spout-side peripheral seal 13 are cut away to form a container shape.

[0043] Then, as shown in Figure 7 (c), a notch 14 is formed at a position corresponding to the boundary between the boat-shaped portion 24 of the spout body 22 and the boat-shaped portion 31 of the closure portion 23 on both side edges of the container wall 11 covering the spout 20, and a slit thinner than the thickness of the packaging material is formed along the boundary by laser processing, thereby forming an easy-to-break line 15. This allows the manufacture of an empty spouted container 10 with its bottom open.

[0044] To store items in this spouted container 10, when forming the storage section 12, an opening portion where no peripheral seal 13 is formed is provided on part of the periphery, for example on the bottom, and the items are placed into the storage section 12 through that opening portion, and then the opening portion is heat-sealed to close it, thereby sealing the items in the storage section 12.

[0045] To open and use the spouted container 10 containing the contents in this manner, the spout 20 is grasped from the outside of the packaging material, and the closure portion 23 is separated and removed from the spout body 22, as shown in FIG. Here, since spout body 22 and closure portion 23 are screwed together, closure portion 23 can be detached from spout body 22 by rotating closure portion 23 relative to spout body 22 . At this time, the entire spout 20 is covered by the container wall 11 and the covering material 21, but the covering material 21 is joined only to the closure portion 23, and the container wall 11 is joined to the spout body 22 and also to the closure portion 23, so that the container wall 11 can be broken by rotating the closure portion 23 relative to the spout body 22.

[0046] In this embodiment, container wall 11 covering spout 20 is provided with notch 14 and easy-to-break line 15, so that by rotating closure portion 23 relative to spout body 22, container wall 11 can be easily broken along easy-to-break line 15 starting from notch 14. This allows closure portion 23 to be separated and removed together with the packaging material, and allows connecting portion 26 provided on protruding portion 25 of spout body 22 to be exposed. Furthermore, to discharge the contents from the storage section after opening, the contents may be discharged directly from the through hole 29 of the spout body 22, or, as shown by the virtual line, the connector of the tube 44 for discharging the contents may be connected to the connecting section 26, and then the contents may be discharged from the tube 44.

[0047] According to the spout-equipped container 10 as described above, the three-dimensional spout 20 joined to the container wall 11 comprises the spout body 22 and the closure portion 23 removably disposed on the spout body 22, and the upper part and the side periphery of the closure portion 23 are covered with the covering material 21, so that the closure portion 23 can be covered with the covering material 21 separate from the container wall 11, and the covering material 21 can be easily disposed along the closure portion 23. Therefore, the covering material 21 can be tightly attached to cover the closure portion 23, and no gap is generated between the covering material 21 and the closure portion 23. Furthermore, since the covering material 21 in close contact with the closure portion 23 and the container wall 11 forming the storage portion 12 are arranged so as to be continuous and overlapping, the entire spout 20 joined to the container wall 11 can be reliably covered with the gas barrier packaging material, and the entire container including the storage portion 12 and the spout 20 can be surrounded by the gas barrier packaging material. This prevents oxygen from entering the container from outside, and since no oxygen remains around the spout 20, oxygen is prevented from passing through the spout and entering the storage section, thereby reliably preventing the contents from being oxidized.

[0048] In the spouted container 10 of this embodiment, the covering material 21 covers the closure portion 23, and the container wall 11 extends to at least the side periphery of the closure portion 23 and is disposed overlapping the covering material 21, so that the vicinity of the boundary between the spout body 22 and the closure portion 23 can be airtightly covered only by the container wall 11. Therefore, it is not necessary to overlap the container wall 11 and the covering material 21. This makes it possible to easily break the packaging material covering the vicinity of the boundary, and to easily separate the closure portion 23 from the spout body 22 for opening.

[0049] In the spouted container 10 of this embodiment, the side periphery of the spout body 22 on the closing portion 23 side and the side periphery of the closing portion 23 on the spout body 22 side are adjacently disposed without any step, so that the side periphery of the spout body 22 and the side periphery of the closing portion 23, which are continuous without any step, can be smoothly and continuously covered in close contact with the gas barrier packaging material. Therefore, no gaps due to steps are formed between the spout body 22 and the closing portion 23 and the packaging material near the boundary 38 between the spout body 22 and the closing portion 23. This makes it difficult for gas to remain between the packaging material and the spout 20, and prevents oxygen remaining near the three-dimensional spout 20 from penetrating the closing portion 23 and entering the inside of the storage portion 12.

[0050] In spouted container 10 of the present embodiment, closure part 23 is screwed into spout body 22 and a packaging material is joined to this closure part 23, and since the packaging material can be broken by rotating closure part 23 relative to spout body 22, closure part 23 can be easily rotated together with the packaging material relative to spout body 22, whereby the packaging material can be broken and closure part 23 can be detached from spout body 22. This makes it easy to open spout 20.

[0051] In particular, spout body 22 and blocking portion 23 have a boat-shaped shape when viewed in a plane, and at least one of the longitudinal ends when viewed in a plane has a protruding piece for rotation 31a protruding therefrom. Therefore, when an operator grasps blocking portion 23 from the outside of the packaging material and rotates it relative to spout body 22, he or she can grasp and rotate protruding piece 31a for rotation, making it easier to open spout 20. Moreover, since the pivot protrusion 31a is formed in a plate shape that is much thinner than the boat shape, when the periphery is covered with a packaging material, it is possible for the packaging material to conform to the step on the periphery of the pivot protrusion 31a due to the flexibility and ductility of the gas barrier packaging material that constitutes the covering material 21. Therefore, the packaging material can be welded in close contact, and no gaps are formed on the periphery of the pivot protrusion 31a.

[0052] In the spouted container 10 of this embodiment, the closure portion 23 has a boat-shaped shape in plan view, and has a concave shape in side view with the thickness gradually decreasing at the upper part, and the upper part and side periphery of the closure portion 23 are tightly covered with one covering material 21 without any gaps. Therefore, the closure portion 23, which has a boat-shaped shape in plan view, can be covered with one packaging material, making it easy to manufacture. Here, the thickness gradually decreases so that the concave shape corresponds to the boat-shaped shape, so even if the upper part and side periphery of the closure portion 23 are covered with one covering material 21, it is possible to prevent wrinkles and the like from occurring and to cover it tightly without any gaps. This makes it possible to prevent gaps and the like from occurring between the closure portion 23 and the covering material 21, and to prevent oxygen from remaining around the spout 20.

[0053] In the spouted container 10 of this embodiment, the storage section 12 contains an item that undergoes changes due to oxidation, and therefore, after the item is stored and sealed as described above, oxygen does not penetrate through the spout 20 and enter the storage section 12, preventing changes to the item due to oxygen penetrating after sealing.

[0054] The above embodiment can be modified as appropriate within the scope of the present invention. For example, in the above embodiment, an example has been described in which only the upper portion and side periphery of the closure portion 23 are covered with the covering material 21, and the container wall 11 is extended to cover the side periphery of the spout 20, thereby covering the side periphery of the spout body 22 and the side periphery of the closure portion 23 with the container wall 11, but this is not particularly limited. For example, by extending the covering material 21, it is also possible to cover the side periphery of the spout body in close contact with the covering material 21 in continuity with the upper portion and side periphery of the closure portion 23, and then cover the covering material 21 in close contact with the container wall 11. In that case, only the side periphery of the spout body 22 may be covered with the container wall 11, or the side periphery of the spout body 22 and the side periphery of the closure portion 23 may be covered in continuity. On the other hand, in the above embodiment, an example was described in which the extended portion of the container wall 11 is arranged to cover the side periphery of the spout 20, specifically, the side periphery of the closing portion 23. It is also possible for the extension to be positioned so as to cover the entire spout 20, specifically the entire upper portion of the closure 23.

[0055] In addition, in the above embodiment, an example was described in which the covering material 21 is covered from the outside by the container wall 11 around the side of the closure portion 23, but it is also possible to cover the container wall 11 arranged around the side of the spout 20 with the covering material 21 from the outside. Furthermore, in the above embodiment, an example was described in which the spout body 22 and the closure portion 23, which are molded separately, are screwed together to form an integrated unit, and then the closure portion 23 is tightly covered with the covering material 21 to produce a resin composite member 40 for use in manufacturing a spouted container 10. However, as shown in Figure 9, it is also possible to produce a resin composite member in which the spout body 22 and the closure portion 23 are separate and the upper and side circumference of the closure portion 23 are tightly covered with the covering material 21, and then the resin composite member and the spout body 22 are screwed together to form an integrated unit for use in manufacturing a spouted container, as shown in

[0056] In the above embodiment, an example was described in which the blocking portion 23 is provided with rotation protrusions 31a at both ends of the boat-shaped portion 31. However, the blocking portion 23 may also be formed of a boat-shaped portion 31 without rotation protrusions 31a, as shown in Figure 10, for example. In the above, an example has been described in which a through hole 37 is provided in the insertion portion 36 as the closing portion 35 of the blocking portion 23 and the upper end is sealed with the covering material 21. However, for example, as shown in FIG. 10, the closing portion 35 may be formed without providing a through hole 37. Furthermore, in the above, the spout body 22 is provided with the boat-shaped portion 24 having the protrusion 25 and the connecting portion 26, but it is also possible to provide a thin-walled plate-shaped rotation protrusion piece 24a that is integrally molded so as to protrude laterally from both longitudinal ends of the boat-shaped portion 24, as shown in Figure 11. In that case, it is also possible to provide pivot projections 31a, 24a on both boat-shaped portion 31 of closure portion 23 and boat-shaped portion 24 of spout body 22. In this way, the shapes of spout body 22 and closure portion 23 can be made to completely match, which reliably prevents gaps with the packaging material, for example, near boundary 38, and also makes opening and closing operations easier.

[0057] In addition, in the above embodiment, the spout body 22 and the blocking portion 23 have the same boat-shaped shape when viewed from above, and when the spout body 22 and the blocking portion 23 are combined together to form the spout 20, an example is described in which the side periphery of the spout is formed as a continuous columnar member with the boat-shaped shape over the entire vertical length. However, as long as the amount of oxygen remaining between the spout body 22 and the blocking portion 23 can be kept to a minimum, the shapes of the spout body 22 and the blocking portion 23 can be changed as appropriate. For example, the present invention can be applied even if the spout body 22 and the closure portion 23 are formed in a cylindrical or polygonal prism shape without providing the boat-shaped portions 24, 31, and the present invention can also be applied even if the upper part of the closure portion 23 is formed in various shapes without providing the concave portion 32. Furthermore, in the case where the boat-shaped portions 24, 31 are present, the method of producing the resin composite member 40 using one sheet of covering material 21 as described above can be similarly applied to members other than the spout 20. [Explanation of symbols]

[0058] 10 Container with spout 11 Container Wall 12 Storage section 13 Periphery seal 14 Notches 15 Easy-to-break line 20 Spout 21 Covering material 22 Spout body 23 Occlusion 24 Hull shape part 24a Rotating protruding piece 25 Protrusion 26 Connecting part 27 Recess 28 Hollow part 29 Through hole 31 Hull shape part 31a Rotating protruding piece 32 Concave portion 33 Threaded joint 34 Storage area 35 Closure 36 Insertion section 37 Through hole 38 Boundary 40 Resin composite materials 41 Upper heat seal mold 42 Side perimeter heat sealing mold 43 Container wall sheet material 44 Tube

Claims

1. A spout-equipped container comprising a storage section formed by a container wall made of a flexible packaging material having gas barrier properties, and a three-dimensional spout joined to the container wall, The spout comprises a spout body joined to the container wall, and a closing portion removably disposed on the spout body so as to close the spout body, A spout-equipped container characterized in that the upper and side edges of the closure are tightly covered with a covering material made of a flexible packaging material having gas barrier properties, and the covering material is overlapped around the side edges of the spout so that it is continuous with the container wall.

2. 2. A spouted container according to claim 1, characterized in that the covering material covers the closure portion, and the container wall extends to at least the side periphery of the closure portion and overlaps the covering material.

3. 2. The spout-equipped container according to claim 1, wherein a side periphery of the spout body on the closing portion side and a side periphery of the closing portion on the spout body side are adjacently disposed without any step.

4. A spout-equipped container as described in claim 1, characterized in that the closure portion is screwed onto the spout body and the packaging material is joined to the closure portion, and the packaging material is configured to be breakable by rotating the closure portion relative to the spout body.

5. A spout-equipped container as described in claim 4, characterized in that the spout body and the closure portion have a boat-shaped shape when viewed in a plane, and a plate-shaped protruding piece for rotation is provided protruding from at least one of the longitudinal ends when viewed in a plane.

6. 2. The spout-equipped container according to claim 1, wherein the closure portion has a boat-shaped shape when viewed from above, and the upper portion has a concave shape when viewed from the side with a thickness that gradually decreases toward the middle portion, and the upper portion and side edges of the closure portion are tightly and tightly covered with a single sheet of the covering material without any gaps.

7. 2. The spouted container according to claim 1, wherein the container contains an object that changes due to oxidation.

Images