Pouch with spout and spout

Abstract

To provide a spouted pouch and a spout that suppress leakage of a content liquid due to collision with a floor surface or the like.SOLUTION: The invention relates to a spouted pouch 10 in which a spout 70 has: an openable / closable sealed valve portion 73 installed between a bung hole 71 and a pouch side opening portion 72; a content liquid storage chamber 74 formed between the pouch side opening portion 72 and the sealed valve portion 73; and an impact mitigating portion 75 for mitigating an impact transmitted to the sealed valve part 73 through the content liquid.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a pouch with a spout in which a spout is attached to a pouch body, and to the spout.

Background Art

[0002] Conventionally, as a container for containing a content liquid such as drinking water or liquid detergent, it is known to use a pouch with a spout in which a spout as a pouring outlet is attached to a pouch body formed by heat-welding a plurality of resin films (for example, see Patent Document 1).

[0003] In the pouch with a spout described in this Patent Document 1, the spout is attached to the side film of the pouch body, and in an installation state where the pouch with a spout is installed in a state where the content liquid can be poured out, the content liquid is stored in the spout.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the pouch with a spout in which the content liquid is stored in the spout in the above installation state, when the pouch with a spout is dropped, it has been found that a very small amount of the content liquid may instantaneously leak from the pouring outlet of the spout due to the collision with the floor surface or the like.

[0006] This instantaneous leakage of the content liquid is presumed to occur because the impact generated due to the collision with the floor surface or the like is transmitted to the content liquid stored in the pouch body and the spout, and then transmitted to the sealing valve portion of the spout, causing a temporary deformation in the portion constituting the sealing valve portion.

[0007] Furthermore, to suppress such instantaneous leakage of the liquid contents, it is conceivable to design the sealing valve section to have a larger tightening margin, but designing a larger tightening margin would reduce the ease of opening the spout.

[0008] Therefore, the present invention aims to solve these problems and to provide a pouch with a spout and a spout that have a simple structure, do not impair the ease of opening the spout, and suppress leakage of the contents due to collision with the floor or the like. [Means for solving the problem]

[0009] The spouted pouch of the present invention is a spouted pouch having a spout attached to a pouch body, wherein the spout has a spout for dispensing liquid contents, a pouch-side opening communicating with a liquid contents storage portion of the pouch body, an openable and closable sealing valve portion installed between the spout and the pouch-side opening, a liquid contents storage chamber formed between the pouch-side opening and the sealing valve portion, capable of storing liquid contents when the spouted pouch is installed in a state where liquid contents can be dispensed, and a shock-absorbing portion that mitigates the shock transmitted to the sealing valve portion via the liquid contents. Furthermore, the shock-absorbing section is a gas-holding section provided in contact with the liquid storage chamber. This solves the aforementioned problem. Furthermore, the spouted pouch of the present invention is a spouted pouch in which a spout is attached to a pouch body, and the spout has a spout for dispensing liquid contents, a pouch-side opening that communicates with the liquid contents storage portion of the pouch body, an openable and closable sealing valve portion installed between the spout and the pouch-side opening, a liquid contents storage chamber formed between the pouch-side opening and the sealing valve portion and capable of storing liquid contents when the spouted pouch is installed in a state in which liquid contents can be dispensed, and an impact mitigation portion that mitigates the impact transmitted to the sealing valve portion through the liquid contents, the impact mitigation portion is composed of an impact mitigation member provided in contact with the liquid contents storage chamber and having a liquid contents passage hole formed therein for the liquid contents to pass through, and the impact mitigation member is welded to the end face of the spout opening so as to close the spout opening that opens to the pouch body side of the spout, thereby solving the above problem. Furthermore, the spouted pouch of the present invention is a spouted pouch in which a spout is attached to a pouch body, and the spout has a dispensing outlet from which the contents can be dispensed, a pouch-side opening communicating with the contents storage portion of the pouch body, an openable and closable sealing valve portion installed between the dispensing outlet and the pouch-side opening, a contents storage chamber formed between the pouch-side opening and the sealing valve portion and capable of storing the contents when the spouted pouch is installed in a state in which the contents can be dispensed, and an impact mitigation portion that mitigates the impact transmitted to the sealing valve portion through the contents, and the impact mitigation portion is composed of an impact mitigation member provided in contact with the contents storage chamber and having contents passage holes formed therein for the contents to pass through, and the impact mitigation member is made of a film having at least one of flexibility or elasticity, thereby solving the above problem. Furthermore, the spout of the present invention is a spout that can be attached to a pouch body and comprises: a spout for dispensing liquid contents; a pouch-side opening that can communicate with the liquid contents storage portion of the pouch body; an openable and closable sealing valve portion installed between the spout and the pouch-side opening; a liquid contents storage chamber formed between the pouch-side opening and the sealing valve portion, capable of storing liquid contents when the spout-equipped pouch is installed in a state where liquid contents can be dispensed; and an impact mitigation portion that reduces the impact transmitted to the sealing valve portion via the liquid contents. Furthermore, the shock-absorbing section is a gas-holding section provided in contact with the liquid storage chamber. This solves the aforementioned problem. Furthermore, the spout of the present invention is a spout that can be attached to a pouch body and has a spout for dispensing liquid contents, a pouch-side opening that can communicate with the liquid contents storage portion of the pouch body, an openable and closable sealing valve portion installed between the spout and the pouch-side opening, a liquid contents storage chamber formed between the pouch-side opening and the sealing valve portion and capable of storing liquid contents when the spout-equipped pouch is installed in a state in which liquid contents can be dispensed, and an impact mitigation portion that mitigates the impact transmitted to the sealing valve portion via the liquid contents, wherein the impact mitigation portion is provided in contact with the liquid contents storage chamber and has a liquid contents passage hole formed therein for the liquid contents to pass through, and the impact mitigation portion is welded to the end face of the spout opening so as to close the spout opening that opens to the pouch body side of the spout, thereby solving the above problem. Furthermore, the spout of the present invention is a spout that can be attached to a pouch body and has a spout for dispensing liquid contents, a pouch-side opening that can communicate with the liquid contents storage portion of the pouch body, an openable and closable sealing valve portion installed between the spout and the pouch-side opening, a liquid contents storage chamber formed between the pouch-side opening and the sealing valve portion and capable of storing liquid contents when the spout-equipped pouch is installed in a state in which liquid contents can be dispensed, and an impact mitigation portion that mitigates the impact transmitted to the sealing valve portion through the liquid contents, wherein the impact mitigation portion is provided in contact with the liquid contents storage chamber and has a liquid contents passage hole formed therein for the liquid contents to pass through, and the impact mitigation portion is made of a film having at least one of flexibility or elasticity, thereby solving the above problems. [Effects of the Invention]

[0010] Claims 1, 8, 9, 13, 14, 15 According to the invention, by providing an impact-absorbing section that mitigates the impact transmitted to the sealing valve section via the liquid contents, it is possible to mitigate the impact received by the sealing valve section via the liquid contents in the liquid contents storage chamber when the spout pouch is dropped. As a result, with a simple configuration, leakage of the liquid contents caused by collision with the floor or the like can be suppressed without impairing the ease of opening the spout. According to the inventions of claims 1 and 13, by providing a gas-holding section in contact with the liquid storage chamber where the liquid contents are stored, when the spout pouch is dropped, the gas held in the gas-holding section can be compressed, and the gas held in the gas-holding section can function as a cushion to mitigate the impact of the drop on the sealing valve section of the spout. Thus, leakage of the liquid contents caused by collision with the floor or the like can be suppressed with a simple configuration. According to the inventions of claims 8, 9, 14, and 15, the impact mitigation portion is composed of an impact mitigation member that is provided in contact with the liquid storage chamber and has a liquid passage hole formed therein for the liquid to pass through, thereby mitigating the impact of a fall on the sealing valve portion of the spout with a simple configuration.

[0011] Claims 2 and 3 According to the invention, since the gas holding section is a gas holding chamber formed in communication with the liquid storage chamber, it is possible to hold gas in the spout without requiring additional parts, thus avoiding a complex spout structure and suppressing leakage of the liquid contents due to collision with the floor or the like. Claims 4 and 5 According to the invention, by adopting a structure in which an opening component constituting at least a part of the opening edge of the pouch-side opening is attached to the spout component to be attached, the size and position of the pouch-side opening can be adjusted by changing the design of the opening component and replacing it. Therefore, depending on the embodiment, the gas retention performance and amount of gas held by the gas retention chamber can be easily adjusted. Claim 6 According to the invention, by configuring the opening component as a film with a pouch-side opening formed therein, the gas retention capacity and amount of gas held by the gas retention chamber can be easily adjusted by changing the position and size of the holes formed in the film. Claim 7 According to the invention, since only one pouch-side opening is formed, it is possible to suppress the flow of the contents between the contents storage chamber and the contents containment section through the pouch-side opening when the sealing valve is closed, thereby preventing the gas held in the gas retention chamber from flowing out to the contents containment section through the pouch-side opening. According to the invention according to claim 10, since the shock mitigation member is a member attached to the spout opening of the spout component to be attached such that the content liquid passage hole functions as the pouch side opening, the shock mitigation member can be easily attached to the spout component to be attached, and the adjustment of shock mitigation by design change of the shock mitigation member can be easily performed. According to the invention according to claim 11, since the shock mitigation member is configured as a porous member in which a plurality of content liquid passage holes are formed, it is possible to reduce the influence on the fluidity of the content liquid and to satisfactorily mitigate the dropping shock. According to the invention according to claim 12, even when a structure using a valve body elastically biased so as to contact the sealed portion is adopted as the structure of the sealed valve portion, the dropping shock received by the sealed valve portion can be mitigated by the shock mitigation portion, and it is possible to suppress the valve body from separating from the sealed portion. Therefore, leakage of the content liquid due to collision with the floor surface or the like can be suppressed.

Brief Description of the Drawings

[0012] [Figure 1] An explanatory drawing showing an installation state in which the pouch with a spout according to the first embodiment of the present invention is installed in a state where the content liquid can be poured out. [Figure 2] An explanatory drawing showing each film constituting the pouch with a spout. [Figure 3] An explanatory drawing showing the pouch with a spout centered on the spout. [Figure 4] An explanatory drawing showing an aspect near the pouch side opening. [Figure 5] An explanatory drawing showing the pouch with a spout according to the second embodiment of the present invention centered on the spout. [Figure 6] An explanatory drawing showing examples and modified examples of the shock mitigation member.

Modes for Carrying Out the Invention

[0013] Hereinafter, the pouch with a spout 10 according to the first embodiment of the present invention will be described based on the drawings.

[0014] The spouted pouch 10 is used to contain liquid contents such as drinking water or liquid detergent. As shown in Figure 1, when using it, the pouch is placed with the bottom 20a facing downwards, and the contents are dispensed from the spout 70 attached to the side of the pouch body 20.

[0015] As shown in Figure 1, the spouted pouch 10 has a pouch body 20 formed into a bag shape by heat-sealing flexible films 30, 40, and 50 to form a seal portion for bag making, an inner film 60 placed inside the pouch body 20, and a spout 70 attached to the pouch body 20.

[0016] The pouch body 20 is configured as a so-called horizontal gusset type pouch with gussets formed on both sides, and as shown in Figures 1 and 2, it has a spout-attached film 30 to which a spout 70 is attached, two lateral films 40 connected to the spout-attached film 30 by first connecting seals 22 formed on both the left and right sides of the spout-attached film 30, and a second film 50 positioned opposite the spout-attached film 30 with the liquid content storage section 21 in between, and connected to the lateral films 40 by second connecting seals 23 formed on both the left and right sides.

[0017] Each of the films 30, 40, 50, and 60 is formed as a resin film having a heat-sealable layer on at least one side, and is arranged so that the heat-sealable layers face each other at the points where they are heat-sealed to each other. In Figure 2, the heat-welding areas of each film (30, 40, 50, and 60) are shown as filled in.

[0018] As shown in Figures 1 and 3, the spout-mounted film 30 is formed as a lateral film facing sideways (horizontally), and as shown in Figure 2, it has a flange-facing region 31 where the flange 76 of the spout 70 is positioned opposite each other, and a spout-through hole 32 formed to penetrate in the film thickness direction.

[0019] As shown in Figures 1 and 2, the pouch body 20 has a first connecting seal 22 formed by heat-sealing both the left and right sides of the spout attachment film 30 to the side film 40, a second connecting seal 23 formed by heat-sealing both the left and right sides of the second film 50 to the side film 40, a top seal 24 formed by heat-sealing films 40 and 60 at a position corresponding to the top of the pouch body 20 opposite the bottom seal 25, sandwiching the liquid content storage section 21, a bottom seal 25 formed by heat-sealing films 40 and 60 at a position corresponding to the bottom 20a of the pouch body 20, and an intermediate seal 26 formed by heat-sealing the side film 40 and the inner film 60. These seals 22 to 26 constitute the sealing section for bag making.

[0020] As shown in Figure 2, the connecting seals 22 and 23 each have a vertically extending strip-shaped seal base 22a and 23a, a first inclined portion 22b and 23b formed on the upper side of the seal base 22a and 23a, and a second inclined portion 22c and 23c formed on the lower side of the seal base 22a and 23a. As shown in Figure 2, the seal bases 22a and 23a have inner edges that extend linearly along the vertical direction. The first inclined portions 22b and 23b have inner edges that are inclined with respect to the vertical direction (45° in this embodiment) so that they move inward in the left-right direction as they move upward, as shown in Figure 2. The second inclined portions 22c and 23c have inner edges that are inclined with respect to the vertical direction (45° in this embodiment) so that they move inward in the left-right direction as they move downward, as shown in Figure 2.

[0021] Furthermore, at predetermined locations on both sides of the pouch body 20 with the gusset (for example, location A shown in Figure 1), areas are formed where the films 30 and 40 are partially removed, and the lateral films 40 are heat-sealed together. This prevents the lateral films 40 from separating at the aforementioned predetermined locations (for example, location A shown in Figure 1).

[0022] The spout 70 is made of synthetic resin or the like, and is designed to be attachable to the pouch body 20. When attached to the pouch body 20, it functions as a spout for dispensing the liquid contents. As shown in Figures 1 and 2, the spout 70 is mounted so as to protrude laterally from the spout mounting film 30 at a position slightly below the center in the vertical direction of the spout mounting film 30. Note that Figure 1 only shows a portion of the spout 70.

[0023] As shown in Figure 3, the spout 70 has a spout 71 from which the liquid contents can be dispensed, a pouch-side opening 72 that communicates with (is able to communicate with) the liquid contents storage section 21 of the pouch body 20, an openable and closable sealing valve section 73 installed between the spout 71 and the pouch-side opening 72, a liquid contents storage chamber 74 which is a space formed between the pouch-side opening 72 and the sealing valve section 73 that can store the liquid contents, an impact mitigation section 75 that mitigates (cushions) the impact transmitted to the sealing valve section 73 (valve body 73b) via the liquid contents, and a flange 76 which is positioned opposite the spout mounting film 30 and at least a part of it is fixed to the spout mounting film 30 by heat welding or the like.

[0024] As shown in Figure 3, the pouch-side opening 72 is configured to connect the space inside the spout 70 (liquid content storage chamber 74) with the liquid content storage section 21 of the pouch body 20.

[0025] The sealing valve section 73 is designed to open and close the flow path between the spout 71 and the pouch-side opening 72. As shown in Figure 3, it consists of a sealed section 73a provided as part of the inner surface of the flow path in the middle of the flow path between the spout 71 and the liquid storage chamber 74, and a valve body 73b, at least a part of which is provided so as to be able to move toward and away from the sealed section 73a and is elastically biased to contact (approach) the sealed section 73a. When the sealing valve section 73 is closed, as shown in Figure 3, the valve body 73b is in close contact with the sealed section 73a, preventing the liquid contents inside the pouch body 20 (and spout 70) from being dispensed from the outlet 71. When the sealing valve section 73 is opened, the user can operate the operating section 73c to move at least a portion of the valve body 73b away from the sealed section 73a, making it possible to dispense the liquid contents. In this embodiment, the valve body 73b is formed to be elastically deformable and biased toward the sealed portion 73a by the elasticity of the valve body 73b itself. However, the valve body 73b may also be biased toward the sealed portion 73a by an elastic member such as a spring or rubber, so that the state in which the valve body 73b is in contact with the sealed portion 73a is elastically maintained. Furthermore, the specific form of the sealing valve portion 73 is not limited to one that utilizes the elasticity of the valve body 73b itself or the elasticity of the elastic member that biases the valve body 73b as described above. The sealing valve portion 73 may also be configured to open and close the flow path between the spout 71 and the pouch-side opening 72 by tightly sealing the sealed portion 73a and the valve body 73b, which are made of hard plastic, without utilizing elasticity. Furthermore, the specific form of the sealing valve 73 is not limited to one that closes the flow path between the spout 71 and the pouch-side opening 72 by tightly pressing the valve body 73b against the sealed portion 73a, but can be any form that allows two states to be taken: one in which the flow path between the spout 71 and the pouch-side opening 72 is closed by the valve body 73b, and one in which the flow path is not closed by the valve body 73b, by moving at least a part of the valve body 73b. For example, the sealing valve 73 may be configured such that the liquid contents are dispensed when the position of the hole formed in the valve body 73b coincides with the position of the flow path. Furthermore, the structure for moving the valve body 73b can be any type, such as one in which at least a part of the valve body 73b is moved by moving the operating part 73c in the vertical or horizontal direction, or one in which at least a part of the valve body 73b is moved by rotating the operating part 73c.

[0026] The liquid storage chamber 74 is configured as a space within the spout 70 where the liquid is stored (when the liquid level of the liquid has reached the pouch-side opening 72) when the spout-equipped pouch 10 is installed in a state where the liquid can be dispensed (liquid can be dispensed), as shown in Figures 1 and 3.

[0027] In this embodiment, the shock-absorbing section 75 is provided in contact with the liquid storage chamber 74 (in contact with the liquid stored in the liquid storage chamber 74), and is configured as a gas-holding section 75 capable of holding gas (air in this embodiment) in the installed state (the state shown in Figure 3). More specifically, it is configured as a gas-holding chamber 75 formed as a space within the spout 70 that communicates with (is spatially continuous with) the liquid storage chamber 74. As shown in Figure 3, the gas retention chamber 75 is formed adjacent to and above the liquid storage chamber 74, and is not open except for the lower part which communicates with the liquid storage chamber 74, and is formed to be able to retain gas. In the example shown in Figure 3, the height of the uppermost part of the pouch-side opening 72 coincides with the height of the uppermost part of the liquid storage chamber 74 (the height of the liquid level of the liquid stored in the liquid storage chamber 74). However, it is not necessary for these uppermost heights to coincide.

[0028] As shown in Figure 3, the spout 70 comprises a spout component 70A to be attached and an opening component 70B that is attached to the spout component 70A and constitutes at least a part of the opening edge of the pouch-side opening 72.

[0029] As shown in Figure 3, the spout component to be attached, 70A, is a spout component to which a separately formed opening component 70B is attached. In this embodiment, it has a storage chamber component wall portion 70Aa that constitutes a part of the inner wall of the liquid storage chamber 74, and a holding chamber component wall portion 70Ab that constitutes a part of the inner wall of the gas holding chamber 75.

[0030] In this embodiment, the opening component 70B is made of a film made of synthetic resin or the like, with a pouch-side opening 72 formed therein. As shown in Figure 3, it is fixedly attached (by heat welding in this embodiment) to the spout component 70A to be attached, so as to close the spout opening 70Ac that opens to the pouch body 20 side. Alternatively, the opening component 70B may be detachably attached to the spout component 70A to be attached.

[0031] As shown in Figures 3 and 4, the opening component 70B includes a storage chamber component wall portion 70Ba which constitutes at least a part (a part in this embodiment) of the inner wall of the liquid storage chamber 74, a holding chamber component wall portion 70Bb which constitutes at least a part (a part in this embodiment) of the inner wall of the gas holding chamber 75, and an opening edge component portion 70Bc which constitutes at least a part (all in this embodiment) of the opening edge of the pouch-side opening 72. As shown in Figures 3 and 4, the retaining chamber wall portion 70Bb is formed above the storage chamber wall portion 70Ba and the opening edge portion 70Bc in the vertical direction.

[0032] Next, the specific configuration of the pouch-side opening 72 in the first embodiment will be described below.

[0033] First, the shape of the pouch-side opening 72 can be anything, such as a semi-circular shape as shown in Figures 4(a) and 4(b), or a circular shape as shown in Figure 4(c).

[0034] Furthermore, regarding the configuration of the pouch-side opening 72, in addition to being formed in the shape of a hole as shown in Figures 4(a) and 4(c), it may also be constructed by forming a U-shaped through-slit so that a flap piece remains at the position of the pouch-side opening 72, as shown in Figure 4(b). In the example shown in Figure 4(b), when the liquid contents move from the liquid contents storage section 21 side of the pouch body 20 into the spout 70, the flap piece moves toward the spout 70.

[0035] Furthermore, from the viewpoint of preventing the gas held in the gas holding chamber 75 from escaping from the pouch-side opening 72 by utilizing surface tension, the cross-sectional area of ​​the pouch-side opening 72 is set to 200 mm². 2 It is preferable to set it within [a certain timeframe]. Furthermore, the shape of the pouch-side opening 72 can be anything, such as a rectangular hole, but it is preferable to form the pouch-side opening 72 as a round hole as shown in Figure 4(c). In this case, from the viewpoint of suppressing the gas held in the gas-holding chamber 75 from escaping from the pouch-side opening 72, it is preferable to set the diameter of the round hole constituting the pouch-side opening 72 to within 10 mm, and it is even more preferable to set the diameter of the round hole to within 6 mm.

[0036] Furthermore, from the viewpoint of suppressing the flow of the liquid contents between the liquid contents storage chamber 74 and the liquid contents containment section 21 through the pouch-side opening 72, and preventing the gas held in the gas retention chamber 75 from escaping from the pouch-side opening 72, it is preferable to form only one pouch-side opening 72, as shown in Figures 4(a) to (c). In other words, when two or more pouch-side openings 72 are formed, with the sealing valve 73 closed, some of the multiple pouch-side openings 72 function as inlets for the liquid contents (inlets when the liquid contents flow from the liquid contents storage section 21 to the liquid contents storage chamber 74), while the other pouch-side openings 72 function as outlets for the liquid contents (outlets when the liquid contents flow out from the liquid contents storage chamber 74 to the liquid contents storage section 21). This increases the fluidity of the liquid contents between the liquid contents storage chamber 74 and the liquid contents storage section 21. By forming only one pouch-side opening 72, such fluid flow can be suppressed.

[0037] The inner film 60 is formed as a rectangular (or nearly rectangular) and flexible resin film having a heat-sealed layer on at least one side thereof. As can be seen from Figures 1 and 2, it is placed inside the pouch body 20 (liquid content storage section 21) in a folded state, and a predetermined portion of it is heat-sealed to the lateral film 40. As shown in Figure 2, the inner film 60 has a plurality of film penetrations formed in the shape of holes that penetrate in the film thickness direction.

[0038] Furthermore, in the bag-making seal portion at the top of the spout-equipped pouch 10, a handle hole 27 is formed through the overlapping portion of the films 40 and 60, as shown in Figures 1 and 2, allowing the user to hold the spout-equipped pouch 10 by inserting their hand or fingers through it.

[0039] Next, a spouted pouch 10 according to the second embodiment of the present invention will be described with reference to Figures 5 and 6. Here, in the second embodiment, except for some components, it is exactly the same as the first embodiment described above, so the description of components other than the differences will be omitted.

[0040] First, in the first embodiment described above, the shock absorption section was described as being configured as a gas holding section 75 capable of holding gas. However, in the second embodiment, as in the first embodiment, no gas is held in the spout 70 (or only a small amount of gas is held), and the shock absorption section is configured as a shock absorption member 77 as shown in Figures 5 and 6.

[0041] The shock-absorbing member 77 is provided in contact with the liquid storage chamber 74 and has at least one liquid passage hole 77a formed therein for the liquid to pass through. In this embodiment, as shown in Figures 5 and 6, the liquid passage hole 77a is fixed in place (by heat welding in this embodiment) so as to close the spout opening 70Ac of the spout component 70A that opens to the pouch body 20 side, so that it functions as the pouch-side opening 72.

[0042] The impact-absorbing member 77 mitigates the impact received by the sealing valve 73 (valve body 73b) via the liquid contents in the liquid contents storage section 21 and the liquid contents storage chamber 74 when the spout pouch 10 is dropped. In this embodiment, as shown in Figures 6(a) and 6(b), it is configured as a film made of synthetic resin or the like as a porous member (such as a mesh) with multiple liquid contents passage holes 77a formed therein to allow the liquid contents to pass through.

[0043] In the above description, the impact-absorbing member 77 was described as being attached to the spout opening 70Ac of the spout component 70A that opens to the pouch body 20 side. However, the installation position of the impact-absorbing member 77 can be any position that is in contact with the liquid storage chamber 74 and capable of mitigating the impact transmitted to the sealing valve 73 via the liquid contents. For example, the impact-absorbing member 77 may be installed inside the liquid storage chamber 74. Furthermore, although the above description assumes that the impact-absorbing member 77 is fixedly attached to the spout component 70A, the impact-absorbing member 77 may be attached to the spout component 70A in a detachable manner. Furthermore, regarding the specific form of the shock-absorbing member 77, any form is acceptable as long as it has liquid passage holes 77a and is capable of mitigating the impact transmitted to the sealing valve portion 73 through the liquid. However, from the viewpoint of enabling the shock-absorbing member 77 to function well as a physical obstacle that mitigates instantaneous impacts transmitted through the liquid, it is preferable to form the shock-absorbing member 77 as a porous member having a plurality of liquid passage holes 77a, as shown in Figures 6(a) and 6(b). It is also preferable to form the shock-absorbing member 77 so as to have at least one of flexibility or elasticity, like the resin film described above.

[0044] Although embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design modifications can be made without departing from the present invention as described in the claims. Furthermore, the configurations of the above embodiments and the modified examples described later can be arbitrarily combined to construct the spouted pouch 10.

[0045] For example, the spouted pouch 10 may be used while housed in an outer case (not shown) during use, display, or transport, or it may be used without being housed in an outer case (not shown).

[0046] Furthermore, regarding the specific embodiments of each film 30, 40, 50, and 60, as long as they have a heat-weldable layer on at least one side, such as an olefin-based layer like low-density polyethylene or polypropylene, or a polyester-based layer like PET (polyethylene terephthalate), a single heat-weldable layer or any layer laminated on the heat-weldable layer may be used. The materials constituting the lamination can be anything, and can be arbitrarily formed by laminating known polyesters such as PET and PBT (polybutylene terephthalate), polyamides such as nylon, polyolefins such as polypropylene and polyethylene, and / or layers on the surface of these thermoplastic resins that have been subjected to vapor deposition such as aluminum vapor deposition, alumina vapor deposition, or silica vapor deposition, or aluminum foil. Furthermore, although the above-described embodiment explained that the pouch body 20 is formed from four films 30, 40, and 50, the specific form of the pouch body 20, such as the number of films constituting the pouch body 20, is not limited to the above. For example, a gusset film for the bottom may be separately provided at a position corresponding to the bottom of the pouch 20a. Furthermore, the inner film 60 does not need to be provided. Furthermore, in the above-described embodiment, the spouted pouch 10 is a large-capacity pouch with a capacity of 2 to 5 liters. It is configured as follows, and also for the spout 70, the outer diameter of the flange 76 is 50-70 mm Although it is configured as a large spout, the size of the spout-equipped pouch 10 and spout 70 is not limited to this and can be arbitrarily set according to the embodiment.

[0047] Furthermore, although the above-described embodiment explained that the flange 76 is fixed to the inner surface of the spout mounting film 30, the flange 76 may also be fixed to the outer surface of the spout mounting film 30. Furthermore, the method for fixing the flange 76 to the spout mounting film 30 may be any method other than heat welding, such as adhesive bonding.

[0048] In the first embodiment described above, the opening component 70B that constitutes at least a part of the opening edge of the pouch-side opening 72 was described as being made of a film made of a rigid resin or the like. However, the specific form of the opening component 70B is not limited to a film. Furthermore, although the first embodiment described above assumed that the opening component 70B is fixedly attached to the spout component 70A to be attached, the opening component 70B may be configured to be detachably attached to the spout component 70A to be attached.

[0049] Furthermore, in the first embodiment described above, the gas holding portion 75 was described as being configured as a gas holding chamber 75 formed as a space within the spout 70 that communicates with the liquid storage chamber 74. However, the specific form of the gas holding portion 75 is not limited to this. For example, the gas holding portion 75 may be a balloon-shaped component containing a gas such as air, and this gas-containing balloon-shaped component, which serves as the gas holding portion 75, may be installed inside the spout 70 in contact with the liquid storage chamber 74 (in contact with the liquid stored in the liquid storage chamber 74).

[0050] Furthermore, although terms such as "top," "bottom," and "side" are used within this specification to indicate top and bottom, these terms do not limit the orientation of the spouted pouch 10 during display or transportation. For example, the spouted pouch 10 may be placed on a surface with its side or top facing downwards during display or transportation. [Explanation of Symbols]

[0051] 10 ··· Pouch with spout 20... Pouch body 20a... Bottom of pouch 21 ··· Contents liquid storage section 22 ··· First connection seal 22a ··· Seal base 22b... 1st slope part 22c... 2nd slope 23... Second connection seal 23a ··· Seal base 23b... 1st slope part 23c... 2nd slope 24 ··· Top seal 25 ··· Bottom seal 26... Intermediate seal 27 · · Handle hole 30 ··· Spout attachment film 31 ··· Flange opposing region 32 ··· Through hole for spout 40 ··· Side film 50 ··· Second film 60 ··· Inner film 70 ··· Spout 70A ··· Spout component to be mounted 70Aa ··· Storage chamber structural wall section 70Ab...Holding chamber configuration wall 70Ac ··· Spout opening 70B ··· Opening component 70Ba ··· Storage chamber structural wall section 70Bb...Holding chamber configuration wall 70Bc...Opening edge component 71 ... spout 72... Pouch side opening 73 ··· Sealed valve section 73a... Sealed part 73b ··· Valve body 73c...Operation unit 74 ··· Liquid storage chamber 75... Gas retention section (shock absorption section) 76 ··· Flange 77. Impact absorbing member (impact absorbing part) 77a... Content liquid passage hole

Claims

1. A spouted pouch, in which a spout is attached to the pouch body, The spout has a dispensing port from which the liquid contents can be dispensed, a pouch-side opening that communicates with the liquid contents storage portion of the pouch body, an openable and closable sealing valve portion installed between the dispensing port and the pouch-side opening, a liquid contents storage chamber formed between the pouch-side opening and the sealing valve portion, capable of storing the liquid contents when the spout-equipped pouch is installed in a state where the liquid contents can be dispensed, and an impact mitigation portion that reduces the impact transmitted to the sealing valve portion through the liquid contents. The spout pouch is characterized in that the shock-absorbing portion is a gas-holding portion provided in contact with the liquid storage chamber.

2. The spout pouch according to claim 1, characterized in that the gas-holding portion is a gas-holding chamber formed in communication with the liquid-containing storage chamber.

3. The spout pouch according to claim 2, characterized in that the gas-holding chamber is a portion formed adjacent to and above the liquid-containing storage chamber in the installed state.

4. The spout pouch according to claim 2 or 3, characterized in that the spout comprises a spout component to be attached and an opening component attached to the spout component to be attached and constituting at least a part of the opening edge of the pouch-side opening.

5. The spout pouch according to claim 4, characterized in that the opening component has a retaining chamber retaining wall portion that constitutes at least a part of the inner wall of the gas retaining chamber.

6. The spouted pouch according to claim 4 or 5, characterized in that the opening component is configured as a film on which the pouch-side opening is formed.

7. The spouted pouch according to any one of claims 2 to 6, characterized in that only one pouch-side opening is formed.

8. A spouted pouch having a spout attached to the pouch body, The spout has a dispensing port from which the liquid contents can be dispensed, a pouch-side opening that communicates with the liquid contents storage portion of the pouch body, an openable and closable sealing valve portion installed between the dispensing port and the pouch-side opening, a liquid contents storage chamber formed between the pouch-side opening and the sealing valve portion, capable of storing the liquid contents when the spout-equipped pouch is installed in a state where the liquid contents can be dispensed, and an impact mitigation portion that reduces the impact transmitted to the sealing valve portion through the liquid contents. The shock-absorbing portion is provided in contact with the liquid storage chamber and consists of a shock-absorbing member having a liquid passage hole formed therein for the liquid to pass through. The spout pouch is characterized in that the impact-absorbing member is welded to the end face of the spout opening so as to close the spout opening that opens to the pouch body side of the spout.

9. A spouted pouch having a spout attached to the pouch body, The spout has a dispensing port from which the liquid contents can be dispensed, a pouch-side opening that communicates with the liquid contents storage portion of the pouch body, an openable and closable sealing valve portion installed between the dispensing port and the pouch-side opening, a liquid contents storage chamber formed between the pouch-side opening and the sealing valve portion, capable of storing the liquid contents when the spout-equipped pouch is installed in a state where the liquid contents can be dispensed, and an impact mitigation portion that reduces the impact transmitted to the sealing valve portion through the liquid contents. The shock-absorbing portion is provided in contact with the liquid storage chamber and consists of a shock-absorbing member having a liquid passage hole formed therein for the liquid to pass through. The spouted pouch is characterized in that the impact-absorbing member is made of a film having at least one of flexibility or elasticity.

10. The spout comprises a spout component to be attached, which has a spout opening that opens toward the pouch body side. The spout pouch according to claim 8 or 9, characterized in that the impact-absorbing member is attached to the spout opening of the spout component to be attached such that the liquid passage hole functions as the pouch-side opening.

11. The spout pouch according to any one of claims 8 to 10, characterized in that the impact-absorbing member is configured as a porous member having a plurality of holes for the passage of the liquid contents.

12. The pouch with a spout according to any one of claims 1 to 11, characterized in that the sealing valve portion comprises a sealed portion provided in the flow path between the spout and the liquid storage chamber, and a valve body, at least a part of which is provided so as to be able to move toward and away from the sealed portion and is elastically biased to contact the sealed portion.

13. A spout that can be attached to the pouch body, It has a spout from which the liquid contents can be dispensed, a pouch-side opening that can communicate with the liquid contents storage section of the pouch body, an openable and closable sealing valve section installed between the spout and the pouch-side opening, a liquid contents storage chamber formed between the pouch-side opening and the sealing valve section, capable of storing the liquid contents when the spouted pouch is installed in a state where the liquid contents can be dispensed, and a shock-absorbing section that mitigates the impact transmitted to the sealing valve section via the liquid contents. The spout is characterized in that the shock-absorbing portion is a gas-holding portion provided in contact with the liquid storage chamber.

14. A spout that can be attached to the pouch body, It has a spout from which the liquid contents can be dispensed, a pouch-side opening that can communicate with the liquid contents storage section of the pouch body, an openable and closable sealing valve section installed between the spout and the pouch-side opening, a liquid contents storage chamber formed between the pouch-side opening and the sealing valve section, capable of storing the liquid contents when the spouted pouch is installed in a state where the liquid contents can be dispensed, and a shock-absorbing section that mitigates the impact transmitted to the sealing valve section via the liquid contents. The shock-absorbing portion is provided in contact with the liquid storage chamber and consists of a shock-absorbing member having a liquid passage hole formed therein for the liquid to pass through. The impact-absorbing member is welded to the end face of the spout opening so as to close the spout opening that opens to the pouch body side of the spout.

15. A spout that can be attached to the pouch body, It has a spout from which the liquid contents can be dispensed, a pouch-side opening that can communicate with the liquid contents storage section of the pouch body, an openable and closable sealing valve section installed between the spout and the pouch-side opening, a liquid contents storage chamber formed between the pouch-side opening and the sealing valve section, capable of storing the liquid contents when the spouted pouch is installed in a state where the liquid contents can be dispensed, and a shock-absorbing section that mitigates the impact transmitted to the sealing valve section via the liquid contents. The shock-absorbing portion is provided in contact with the liquid storage chamber and consists of a shock-absorbing member having a liquid passage hole formed therein for the liquid to pass through. The spout is characterized in that the impact-absorbing member is made of a film having at least one of flexibility or elasticity.

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