JP6720616B2 - Spout, liquid storage container and combination of liquid storage container and outer container - Google Patents

Description

The present invention relates to a spout and a liquid storage container, and more particularly to a liquid storage container and a spout for storage and transportation of fluid contents in the fields of industrial chemicals, pharmaceuticals, cosmetic raw materials and the like.

Conventionally, in the fields of industrial chemicals, pharmaceuticals and cosmetic raw materials, etc., a liquid storage container for storing fluid contents has been placed inside an outer container made of aluminum, steel, stainless steel, fiberboard, etc. for storage and transportation. It is used.

Such a liquid storage container can be reused simply by removing a used liquid storage container from the outer container and setting a new liquid storage container in the outer container. Compared with directly filling an outer container such as steel with fluid contents without doing so, it has the advantage of saving the labor of cleaning, etc., and is widely used as a container for industrial chemicals, pharmaceuticals and cosmetic raw materials. ..

Further, as a liquid storage container, one having a bag body and a spout attached to the bag body is known. Such a liquid container is first compactly folded and inserted into the outer container through the opening of the outer container.

By the way, the spout is joined and attached to the bag body. Such a spout has a spout body and a joint portion joined to the bag body. In spouts with such a structure, there is a need for technology to securely join the joints to the bag body, but we have developed a spout and liquid storage container that have joints that can be securely joined to the bag body. The reality is that it has not been done.

JP, 2013-107655, A Patent No. 5,390,318

The present invention has been made in view of the above points, and an object thereof is to provide a spout that can be reliably joined to the bag body and a liquid container using the spout.

The present invention, in the spout to be joined to the bag body, comprises a spout body and a joint portion connected to the spout body and joined to the bag body, wherein the joint portion is formed on the outer surface thereof. It has at least one groove, one end of the groove is a communicating end communicating with the edge of the joint, and the other end of the groove remains in the joint without reaching the edge of the joint. The spout is characterized by.

The present invention may be a spout characterized in that the joint portion is joined to an upper edge of the bag body, and the edge of the joint portion includes a peripheral edge of the outer surface.

The present invention may be a spout characterized in that the joint portion has a ring shape and is joined to the inner surface of the bag body.

The present invention is characterized in that the groove has a groove line and a branch portion branched from the groove line, the groove line includes the communication end portion, and the branch portion remains in the joint portion. It may be the exit.

The present invention is characterized in that the groove has a groove line and an island-shaped portion that is continuous with the groove line, the groove line includes the communication end, and the island-shaped portion remains in the joint portion. It may be a spout.

In the present invention, the joining portion has an additional groove in which one end and the other end communicate with an edge of the joining portion and has a continuous additional groove, and at least one of the one end and the other end of the additional groove is the bag body. The spout may be formed at an edge extending along the flow direction of the liquid from the to the spout body.

The present invention comprises a bag main body and a spout attached to the bag main body, the spout includes a spout main body and a joint portion connected to the spout main body and joined to the bag main body. The joining portion has at least one groove formed on an outer surface thereof, one end of the groove is a communicating end communicating with an edge of the joining portion, and the other end of the groove is joined. The liquid container is characterized in that it stays in the joint portion without reaching the edge of the portion.

The present invention may be a liquid container in which the spout is entirely made of synthetic resin, and the spout and the bag body are welded.

The present invention may be a liquid container in which the spout is directly attached to an outer container having an opening, and the spout has a flange that engages with the opening.

The present invention may be a liquid container in which the spout is attached to an outer container having an opening via a holder, and the spout has a flange that engages with the holder. ..

The present invention comprises an outer container and a liquid container housed in the outer container, the liquid container comprises a bag body and a spout joined to the bag body, and the spout is A spout body and a joint portion connected to the spout body and joined to the bag body, the joint portion having at least one groove formed on an outer surface thereof, and one end of the groove The portion is a communicating end communicating with the edge of the joint, and the other end of the groove stays in the joint without reaching the edge of the joint. A combination of a liquid container and an outer container. It is the body.

As described above, according to the present invention, the joint portion of the spout can be reliably joined to the bag body. Further, according to the combination of the liquid storage container and the outer container of the present invention, in the state where the liquid storage container is supported in the outer container, the joint portion of the spout is reliably joined to the bag body, The liquid container has a large internal volume and can sufficiently bear the load of the contents even if the bag is heavily loaded.

FIG. 1 is a plan view showing a liquid container according to the present invention. FIG. 2 is a perspective view showing a spout. FIG. 3 is a side view showing the spout. FIG. 4 is a plan view showing a spout. FIG. 5 is a bottom view showing the spout. FIG. 6 is a perspective view showing a combination of the spout and the holder. FIG. 7 is a side sectional view showing a combination of the spout and the holder. FIG. 8: is a figure which shows the state which inserts a liquid storage container in an exterior container. FIG. 9 is a cross-sectional view showing the layer structure of the bag body of the liquid storage container. 10A is a plan view showing the holder, and FIG. 10B is a side view thereof. 11(a), (b), (c), and (d) are diagrams showing a configuration example of a joint portion of a spout. 12(a), (b), (c), (d), and (f) are diagrams showing a configuration example of a joint portion of a spout. 13(a), (b), (c), and (d) are diagrams showing a configuration example of a joint portion of a spout. FIGS. 14A and 14B are views showing a configuration example of a joint portion of the spout. FIGS. 15A, 15B, and 15C are views showing a configuration example of a joint portion of the spout. 16(a), (b), (c), (d), (e), and (f) are diagrams showing a configuration example of a joint portion of a spout. 17(a), (b), (c), (d), (e), (f), (g), and (h) are diagrams showing a configuration example of the joint portion of the spout. FIG. 18 is a diagram showing a configuration example of a joint portion of the spout. 19(a), (b) and (c) are diagrams showing a configuration example of a joint portion of a spout. 20(a)(b)(c) is a figure which shows the structural example of the junction part of a spout. 21(a), (b), and (c) are diagrams showing a configuration example of a joint portion of a spout. 22(a) and 22(b) are views showing a configuration example of the joint portion of the spout. 23(a) and 23(b) are views showing a configuration example of a joint portion of a spout. FIG. 24 is a diagram showing a configuration example of a joint portion of the spout. 25(a), (b) and (c) are views showing a configuration example of a joint portion of the spout. 26(a) is a plan view showing the spout, FIG. 26(b) is a side view thereof, and FIG. 26(c) is a bottom view thereof. 27A is a plan view showing the liquid container, and FIGS. 27B and 27C are sectional views showing the spout portion thereof. 28(a), (b), (c), (d), and (e) are diagrams showing a configuration example of the joint portion of the spout. 29(a) (b) (c) (d) (e) is a figure which shows the structural example of the junction part of a spout. FIGS. 30(a), (b), (c), (d), and (e) are diagrams showing a configuration example of a joint portion of the spout. FIG. 31 is a view showing a liquid container according to a modified example of the present invention. FIG. 32 is a front view showing a liquid container according to another modification of the present invention. 33A is an enlarged view showing a liquid storage container according to another modification of the present invention, and FIG. 33B is an enlarged view showing a liquid storage container according to still another modification. FIG. 34(a) is a bottom view showing a liquid storage container according to another modification of the present invention, and FIG. 34(b) is a bottom view showing a liquid storage container according to still another modification.

<Embodiment of the present invention>
Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
1 to 16 are views showing an embodiment of the present invention.

First, the liquid container 1 of FIG. 1 will be described.
The liquid storage container 1 has a total of six sheets of three-layered multiple films 2 in which an outer bag 20 and a double inner bag 21 are stacked so that the inner bags 21 face each other, and the four sides are heated. The bag main body 3 is formed by sealing (welding, particularly heat welding) to form the heat-sealing portion 10, and the spout 40 arranged on the upper edge 3 a of the bag main body 3 and pre-joined between the inner bags 21. .. In this case, the spout 40 is joined and welded by a joining means such as adhesion or welding.

In the present embodiment, the bag body 3 is obtained by laminating the multiple films 2 so that the inner bags 21 face each other, and heat-sealing the four sides to form the heat-sealing portion 10. The present invention is not limited to this. For example, the multiple films 2 may be formed by bending the inner bags 21 so that they face each other, and then heat-sealing the overlapping three outer peripheral sides. In addition, each inner edge portion of the heat seal portion 10 may be formed so that the inner edge has an arc shape. As a result, the structure is such that the fluid contents are unlikely to remain in the corners. Further, the bag body does not necessarily have to be composed of multiple films, and the film structure of the bag body 3 can be appropriately selected according to the content and amount. In addition, the bag body 3 is made up of a total of four pieces of the double multi-layered film 2 in which the outer bag 20 and the inner bag 21 are stacked so that the inner bags 21 face each other, and the four sides thereof are heat-sealed. A double bag, which is the bag body 3 having the heat-sealed portion 10, may be used, or a triple bag may be used. When the bag has a large internal volume and a large load is applied to the bag body, the bag body withstands the load. Is preferred.

In the present embodiment, an example in which the bag body 3 is formed by stacking two multi-layered films is shown, but the present invention is not limited to this, and two films are prepared and four sides are heat-sealed. Alternatively, the bag body 3 can be formed of a single-layer film by folding a single film and heat-sealing the three sides.

As described above, the bag body 3 is obtained by stacking two multi-layered films 2 and heat-sealing the peripheral edge to form the heat-sealing portion 10. In this case, the bag body 3 has a rectangular shape having an upper edge 3a, a bottom edge 3b, and two side edges 3c, 3c. The upper edge 3a includes one upper edge heat seal portion 10a, the bottom edge 3b includes one bottom edge heat seal portion 10b, and each side edge 3c, 3c includes one side edge heat seal portion 10c. The upper edge heat seal portion 10a, the bottom edge heat seal portion 10b, and the side edge heat seal portion 10c constitute the heat seal portion 10.

Further, in the present embodiment, the upper edge 3a of the bag body 3 includes one upper edge heat seal portion 10a as described above, but two or more heat seal portions may be formed on the upper edge 3a. .. For example, as in the modification shown in FIG. 31, by dividing the heat seal portion 10a of the upper edge 3a into two pieces, for example, one heat seal portion having a width of two heat seal portions 10a on the upper edge 3a. The upper edge 3a can be made relatively softer than in the case of forming the.

The spout 40 has a joint 50 welded to the upper edge 3a of the bag body 3 and a spout body 41 that is connected to the joint 50 and projects outward from the bag body 3. A spout flange 42 is provided at the upper end of 41. Further, as shown in FIG. 1, the spout 40 is welded at the joint portion 50 between the inner bags 21 of the multiple film 2.

As shown in FIGS. 2 to 7, the joint portion 50 of the spout 40 is formed from an elliptic cylinder having a central portion 51 and thin portions 52 provided on both sides of the central portion 51 and having a thickness smaller than that of the central portion 51. It has a flat shape and has a through hole 45 in the central portion 51. Usually, when the spout 40 is welded between the inner bags 21 of the multi-layer film 2 at the joint portion 50, a gap is formed between the inner bags 21 and two regions surrounded by the end portion of the joint portion 50, which easily causes poor sealing. .. In order to prevent this, thin portions 52 are provided on both sides, and a gap is prevented by melting the thin portions 52 during welding.

The spout body 41 of the spout 40 is made of a tubular body having a substantially U-shaped cross section, and a spout flange 42 is provided on the upper edge of the spout body. An opening 44 is formed in the bottom portion 43 of the spout body 41. Ventilation can be ensured between the liquid storage container 1 and the exterior container 5 (see FIG. 8) described later by this opening 44, and when the content liquid is pumped out during use, the liquid storage container is opened through this opening 44. 1 can be introduced between the outer container 5 and the outer container 5, and atmospheric pressure can be applied from the outside of the liquid container 1 to smoothly pump out the content liquid inside the liquid container 1. Further, a spout upper member 70 is provided on the bottom portion 43 in the spout main body 41 so as to extend in the vertical direction.

The spout flange 42 of the spout 40 is attached to the opening 5a formed in the outer container 5 via a holder 80 described later, and the liquid storage container 1 is supported in the outer container 5.

The spout 40 is preferably manufactured by an injection molding method. The resin used for this is not particularly limited as long as it is a resin that can be injection-molded, but since it is joined by welding to the resin forming the inner surface of the inner bag 21 of the multiple film 2, the inner surface of the inner bag 21 is Although it is necessary to select it appropriately depending on the resin constituting the high density polyethylene, which is usually rigid even at high temperatures and hardly brittle at low temperatures, is suitable.

FIG. 9 is a schematic cross-sectional view showing the layer structure of the multiple film 2 which forms the bag body 3. As shown in FIG. 9, the multiple film 2 of the present embodiment is an outer bag 20 having a three-layer structure of an unstretched nylon layer 20a, a gas barrier layer 20b, and a polyethylene layer 20c in order from the outside of the bag body 3. And two inner bags 21, 21 made of linear low-density polyethylene. When the fluid contents used do not require gas barrier properties, the gas barrier layer 20b may be omitted to form a two-layer structure.

In this case, since the outer bag 20 includes the unstretched nylon layer 20a, the extension of the outer bag 20 can be increased. For example, the outer bag 20 has an extension of 300% to 500%. Since the outer bag 20 can have a high degree of extension as described above, the bag body 3 can be made soft as a whole, and the bag body 3 is inserted into the outer container 5 as described later, and the bag body 3 is inserted. When the bag body 3 is inflated in the outer container by supplying normal air, nitrogen gas or clean dry air therein, the bag body 3 can be inflated smoothly.

The material of the bag body 3 is not limited to the above.

For example, as the material of the inner bag 21, a material such as low density polyethylene, a mixture of low density polyethylene and linear low density polyethylene, or a laminate of low density polyethylene and linear low density polyethylene can be used.

The material of the outer bag 20 has an elongation of 300% to 500%, such as low density polyethylene, linear low density polyethylene, a mixture of low density polyethylene and linear low density polyethylene, or low density polyethylene. Materials such as chain low density polyethylene laminates can be used.

By the way, as described above, the spout flange 42 of the spout 40 is attached to the opening 5a of the outer container 5 via the holder 80. The holder 80 is interposed between the opening 5a and the spout 40, so that even if the shape of the opening 5a of the outer container 5 is slightly larger than the outer shape of the spout flange 42, the spout 40 is inserted into the opening 5a. Function to securely attach.

Next, the holder 80 will be described in detail.
The holder 80 includes an outer flange 81 that engages with the opening 5a of the outer container 5, and an inner flange 82 that is connected to the outer flange 81 through a connecting step 83 and that engages with the spout flange 42 of the spout 40. And has a ring shape having an opening 80a as a whole.

Further, the inner flange 82 of the holder 80 has a ring shape forming the opening 80a, and its inner diameter is a1. Further, the inner flange 82 is provided with a pair of facing notches 85, 85 on a straight line passing through the center thereof, and the inner diameter of the inner flange 82 passing through the notches 85, 85 is a2 (FIG. 10).
Therefore, as shown in FIG. 10, the minimum inner diameter of the inner flange 82 is a1 and the maximum inner diameter is a2.
The holder 80 configured in this manner is attached to the spout 40 of the liquid storage container 1, but in this case, the spout flange 42 of the spout 40 has a ring shape (circular shape). Therefore, the maximum outer diameter b1 and the minimum outer diameter b2 of the spout flange 42 are equal to each other.

Next, the relationship between the minimum inner diameter a1 and the maximum inner diameter a2 of the inner flange 82 of the holder 80 and the maximum outer diameter b1 and the minimum outer diameter b2 of the spout flange 42 of the spout 40 will be described.

The maximum inner diameter a2 of the inner flange 82 is larger than the minimum outer diameter b2 of the spout flange 42, and a2>b2.
The minimum inner diameter a1 of the inner flange 82 is smaller than the maximum outer diameter b1 of the spout flange 42, and a1<b1.

Since a2>b2 in this way, the spout flange 42 can pass through the space extending between the pair of notches 85 of the holder 80. Further, since a1<b1, the spout flange 42 that has passed between the pair of notches 85 of the holder 80 can be locked to the inner flange 82 of the holder 80.

By the way, the minimum inner diameter a1 and the maximum inner diameter a2 of the inner flange 82 of the holder 80 and the maximum outer diameter b1 and the minimum inner diameter b2 of the spout flange 42 of the spout 40 can be defined as follows.

That is, the minimum inner diameter a1 of the inner flange 82 of the holder 80 is the minimum length of the straight line connecting the two facing points of the inner edge 82A of the inner flange 82, and the maximum inner diameter a2 of the inner flange 82 of the holder 80 is It is the maximum length of a straight line connecting between two facing points of the inner edge 82A of the inner flange 82.

The maximum outer diameter b1 of the spout flange 42 of the spout 40 is the maximum length of a straight line connecting two facing edges of the outer edge 42A of the spout flange 42, and is the minimum of the spout flange 42 of the spout 40. The outer diameter b2 is the minimum length of a straight line connecting the two facing points of the outer edge 42A of the spout flange 42.

Here, the “between two points facing each other” that defines a2 and b2 means that the spout flange 42 smoothly passes through the space inside the holder 80 by utilizing the two points facing each other.

The “between two points facing each other” that defines a1 and b1 means that the spout flange 42 can be engaged with the inner flange 82 of the holder 80 by utilizing the two points facing each other.

By the way, as shown in FIG. 2, in the present embodiment, the spout 40 has the spout body 41 and the joint portion 50 connected to the spout body 41 as described above. The part 50 has at least one, for example, 12 continuous grooves 100 formed on its outer surface (see FIG. 11A). The groove 100 improves heat sealing strength when welding the joint portion 50 of the spout 40 to the bag body 3, and discharges air between the joint portion 50 and the bag body 3 to improve sealing performance. It is a thing.
Here, the outer surface of the joint portion 50 means a surface welded to the bag body 3.

As shown in FIG. 11A, the twelve grooves 100 formed in the joint portion 50 are groove lines (hereinafter, also referred to as lines), and each of the communication end portions communicates with the upper edge 50 a of the joint portion 50. The groove 100 has the other end 100b and remains in the joint 50 without communicating with the upper edge 50a, the lower edge 50b, and the side edges 50c and 50d of the joint 50.

Since each groove 100 has the communicating end portion 100a that communicates with the upper edge 50a in this way, when the spout 40 is welded to the upper edge 3a of the bag body 3, it remains between the spout 40 and the bag body 3, for example. Air can be escaped outward from the communication end 100a. Therefore, air does not remain between the spout 40 and the bag body 3, and the spout 40 can be reliably welded and attached to the bag body 3.

Further, according to the combination of the liquid storage container 1 and the outer container 5 of the present embodiment, when the liquid storage container 1 is supported in the outer container 5, the joint portion 50 of the spout 40 is surely a bag. Since it is joined to the main body 3, the liquid container 1 can sufficiently bear the load even when the content capacity is large and the bag body 3 is heavily loaded.

Further, since the other end portion 100b of each groove 100 remains in the joint portion 50, the liquid filled in the bag body 3 does not leak to the outside through the groove 100.

Next, a modified example of the groove 100 formed in the joint portion 50 will be described below.
In the embodiment shown in FIG. 11A, each groove 100 has the communicating end portion 100a communicating with the upper edge 50a of the joint portion 50, and the other end portion 100b remains in the joint portion 50. Not limited to this, three grooves 100 are provided in the joint portion 50, each groove 100 has a communication end portion 100a that communicates with the left side edge 50c of the joint portion 50, and the other end portion 100b is inside the joint portion 50. It may remain (see FIG. 11(b)).

Alternatively, as shown in FIG. 11C, twelve grooves 100 are provided in the joint portion 50, and each groove 100 has a communication end portion 100a that communicates with the lower edge 50b of the joint portion 50 and the other end portion 100b. May remain in the joint portion 50 (see FIG. 11C).

Alternatively, as shown in FIG. 11D, three grooves 100 are provided in the joint portion 50, and each groove 100 has a communication end portion 100a communicating with the right side edge 50d of the joint portion 50 and the other end portion 100b. May remain in the joint portion 50 (see FIG. 11D).

Next, another modified example of the groove 100 formed in the joint portion 50 will be described.
As shown in FIG. 12A, the joining portion 50 is provided with twelve grooves 100 extending in the vertical direction and two grooves 100 extending in the horizontal direction.

Of these, the twelve grooves 100 extending in the vertical direction each have a communication end portion 100a that communicates with the upper edge 50a of the joint portion 50, and the other end portion 100b remains inside the joint portion 50.

Each of the two grooves 100 extending in the lateral direction has a communication end 100a that communicates with the left side edge 50c of the joint 50, and the other end 100b remains in the joint 50.

As shown in FIG. 12B, the joint portion 50 is provided with twelve grooves extending in the vertical direction in the upper and lower stages, respectively.

Of these, the upper 12 vertical grooves 100 each have a communicating end 100a that communicates with the upper edge 50a of the joint 50, and the other end 100b remains in the joint 50.

The twelve grooves 100 extending in the vertical direction in the lower stage each have a communicating end 100a that communicates with the lower edge 50b of the joint 50, and the other end 100b remains in the joint 50.

As shown in FIG. 12C, the joint portion 50 is provided with twelve grooves 100 extending in the vertical direction and two grooves 100 extending in the horizontal direction.

Of these, the twelve grooves 100 extending in the vertical direction each have a communication end portion 100a that communicates with the upper edge 50a of the joint portion 50, and the other end portion 100b remains inside the joint portion 50.

Each of the two grooves 100 extending in the lateral direction has a communication end 100a that communicates with the right side edge 50d of the joint 50, and the other end 100b remains inside the joint 50.

As shown in FIG. 12D, the joining portion 50 is provided with twelve grooves 100 extending in the vertical direction and two grooves 100 extending in the horizontal direction.

Of these, the twelve grooves 100 extending in the vertical direction each have a communication end portion 100a that communicates with the lower edge 50b of the joint portion 50, and the other end portion 100b remains in the joint portion 50.

Each of the two grooves 100 extending in the lateral direction has a communication end 100a that communicates with the left side edge 50c of the joint 50, and the other end 100b remains in the joint 50.

As shown in FIG. 12E, six grooves 100 extending in the lateral direction are provided on the left side and the right side of the joint portion 50, respectively.

Of these, the three grooves 100 on the left side each have a communication end portion 100a that communicates with the left side edge 50c of the joint portion 50, and the other end portion 100b remains inside the joint portion 50.

Further, the three grooves 100 on the right side each have a communication end portion 100 a that communicates with the right side edge 50 d of the joint portion 50, and the other end portion 100 b remains inside the joint portion 50.

As shown in FIG. 12F, the joining portion 50 is provided with twelve grooves 100 extending in the vertical direction and two grooves 100 extending in the horizontal direction.

Of these, the twelve grooves 100 extending in the vertical direction each have a communication end portion 100a that communicates with the lower edge 50b of the joint portion 50, and the other end portion 100b remains in the joint portion 50.

Each of the two grooves 100 extending in the lateral direction has a communication end 100a that communicates with the right side edge 50d of the joint 50, and the other end 100b remains inside the joint 50.
In FIGS. 12A to 12F, since the communicating end portion 100a of the groove 100 communicates with the edge of the joint portion 50 and the other end portion 100b stays in the joint portion 50, the other end portion 100b of the joint portion 50 is located on the side of the joint portion 50. Grooves 100 in different directions can be provided, which can improve heat seal strength in a plurality of directions.

Alternatively, as shown in FIG. 13A, the joining portion 50 is provided with six vertically extending grooves 100 in each of the upper and lower stages, and three grooves 100 extending in the horizontal direction are provided on the left side of the vertically extending grooves 100. Is provided.

Of these, the upper longitudinal groove 100 has a communicating end 100a that communicates with the upper edge 50a, and the other end 100b remains in the joint 50. Further, each of the grooves 100 extending in the vertical direction in the lower stage has a communicating end portion 100a that communicates with the lower edge 50b, and the other end 100b remains in the joint portion 50.

Further, each groove 100 extending in the lateral direction has a communicating end portion 100a that communicates with the left side edge 50c, and the other end portion 100b remains in the joint portion 50.

Alternatively, as shown in FIG. 13B, twelve grooves 100 extending in the vertical direction are provided in the joint portion 50, and four grooves 100 extending in the horizontal direction are provided below the groove 100 extending in the vertical direction.

Of these, each of the grooves 100 extending in the vertical direction has a communication end portion 100a that communicates with the upper edge 50a, and the other end portion 100b remains in the joint portion 50.

The left-side groove 100 that extends in the lateral direction has a communication end portion 100a that communicates with the left-side edge 50c, and the other end portion 100b remains in the joint portion 50. Further, the right side groove 100 extending in the lateral direction has a communication end portion 100a that communicates with the right side edge 50d, and the other end portion 100b remains in the joint portion 50.

Alternatively, as shown in FIG. 13C, six grooves 100 extending in the vertical direction are provided in the joining portion 50 in each of the upper and lower stages, and three grooves 100 extending in the horizontal direction are provided on the right side of the groove 100 extending in the vertical direction. Is provided.

Of these, the upper longitudinal groove 100 has a communicating end 100a that communicates with the upper edge 50a, and the other end 100b remains in the joint 50. Further, each of the grooves 100 extending in the vertical direction in the lower stage has a communicating end portion 100a that communicates with the lower edge 50b, and the other end 100b remains in the joint portion 50.

Further, each groove 100 extending in the lateral direction has a communicating end portion 100a communicating with the right side edge 50d, and the other end portion 100b remains in the joint portion 50.

Alternatively, as shown in FIG. 13D, 12 grooves 100 extending in the vertical direction are provided in the joint portion 50, and four grooves 100 extending in the horizontal direction are provided above the grooves 100 extending in the vertical direction.

Of these, each of the grooves 100 extending in the vertical direction has a communication end portion 100a that communicates with the lower edge 50b, and the other end portion 100b remains in the joint portion 50.

Further, each groove 100 extending in the lateral direction on the left side has a communicating end portion 100a communicating with the left side edge 50c, and the other end portion 100b remains in the joint portion 50. The right side groove 100 extending in the lateral direction has a communication end 100a that communicates with the right side edge 50d, and the other end 100b remains in the joint 50.
In FIGS. 13A to 13D, since the communicating end portion 100a of the groove 100 communicates with the edge of the joint portion 50 and the other end portion 100b stays in the joint portion 50, the other end portion 100b of the joint portion 50 is located on the side of the joint portion 50. Grooves 100 in different directions can be provided, which can improve heat seal strength in a plurality of directions.

Alternatively, as shown in FIG. 14A, in the joint portion 50, six grooves 100 extending in the vertical direction are provided in each of the upper and lower stages, and three grooves 100 extending in the lateral direction are provided in each of the left side and the right side. ing.

Of these, the upper longitudinal groove 100 has a communicating end 100a that communicates with the upper edge 50a, and the other end 100b remains in the joint 50. Further, each of the grooves extending in the vertical direction in the lower stage has a communicating end portion 100a communicating with the lower edge 50b, and the other end portion 100b remains in the joint portion 50.

The left laterally extending grooves 100 each have a communicating end portion 100a that communicates with the left side edge 50c, and the other end portion 100b stays in the joint portion 50, and the right laterally extending grooves 100 are respectively on the right side. It has a communication end 100a that communicates with the edge 50d, and the other end 100b remains in the joint 50.

Alternatively, as shown in FIG. 14B, in the joint portion 50, twelve vertically extending grooves 100 are provided in each of the upper and lower stages, and two laterally extending grooves 100 are provided in each of the left and right sides. ing.

Of these, the upper longitudinal groove 100 has a communicating end 100a that communicates with the upper edge 50a, and the other end 100b remains in the joint 50. Further, the grooves 100 extending in the vertical direction in the lower stage each have a communication end portion 100a that communicates with the lower edge 50b, and the other end portion 100b remains in the joint portion 50.

The left laterally extending grooves 100 each have a communicating end portion 100a that communicates with the left side edge 50c, and the other end portion 100b stays in the joint portion 50, and the right laterally extending grooves 100 are respectively on the right side. It has a communication end 100a that communicates with the edge 50d, and the other end 100b remains in the joint 50.
In FIGS. 14A and 14B, the communicating end portion 100a of the groove 100 communicates with the edge of the joint portion 50, and the other end portion 100b stays in the joint portion 50. Directional grooves 100 may be provided, which may improve heat seal strength in multiple directions.

Alternatively, as shown in FIGS. 15A, 15B, and 15C, a plurality of grooves 100 are provided in the joint portion 50, and each groove 100 has a communication end portion 100a that communicates with the upper edge 50a and the other end portion. 100b remains in the joint portion 50.

In this case, each groove 100 may be bent on the other end 100b side (see FIG. 15(a)), or each groove 100 may be curved as a whole (see FIG. 15(b)). 100 may be inclined as a whole (see FIG. 15(c)).
In FIGS. 15A, 15B, and 15C, the heat seal strength in a plurality of directions can be improved.

Alternatively, as shown in FIGS. 16(a), (b), (c), (d), (e), and (f), a plurality of grooves 100 are provided in the joint portion 50, and each groove 100 communicates with the upper edge 50a. While having the portion 100a, the other end portion 100b remains in the joint portion 50.

In addition, each groove 100 has a line (also referred to as a groove line) 111 and a branch portion 112 that branches from the line 111 to the right side. It remains (see FIG. 16A). In this case, the branch part 112 branching from the line 111 may branch to the left side from the line 111 (see FIG. 16B). Further, the branching unit 112 that branches from the line 111 may branch from the line 111 to the left side, the right side, or both the left side and the right side (see FIG. 16C).
The branch portion 112 may be formed on the right side or the left side perpendicular to the line (groove line) 111, or may be inclined.

Alternatively, a plurality of branch portions 112 may branch from the line 111 of each groove 110 (see FIG. 16D). Further, a plurality of branch portions 112 may branch from the line 111 to both sides (see FIG. 16(e)).

Further, the branch portion 112 may branch from the line 111 of each groove 110, and the additional branch portion 112a may further branch from the branch portion 112 (see FIG. 16(f)). In this case, in FIGS. 16A to 16F, the heat sealing strength in a plurality of directions can be improved.

Alternatively, as shown in FIGS. 17(a), (b), (c), (d), (e), (f), (g), and (h), a plurality of grooves 100 are provided in the joint portion 50, and each groove 100 has an upper edge. It has a communicating end portion 100a communicating with 50a, and the other end portion 100b remains in the joint portion 50.

In addition, as shown in FIG. 17A, each groove 100 has a line (groove line) 111 and an island-shaped portion 113 that is continuous with the line 111, and the line 111 includes a communication end 110a and has an island shape. The portion 113 remains in the joint portion 50. Although the island portion 113 is connected to the right side of the line 111 in FIG. 17A, the island portion 113 may be connected to the left side of the line 111 (see FIG. 17B). Here, the island portion 113 is a portion that is continuous with the line 111 and is surrounded by the line 111.
Alternatively, the island portion 113 may be provided in the middle of the line 111 (see FIG. 17C), or the island portion 113 may be provided at the other end 100b of the line 111 (see FIG. 17( See d)).

A plurality of, for example, a plurality of island-shaped portions 113 may be provided on the line 111 of each groove 100 (see FIG. 17E), and the island-shaped portion 113 may be provided on the other end 100b of the line 111 of each groove 100. In addition to being provided, the line 111 may be provided with a branching portion 112 (see FIG. 17F).

Alternatively, the island portion 113 may be provided on the left side of the line 111 of the one groove 100, and the island portion 113 may be provided on the right side of the line 111 of the other groove (see FIG. 17G).

Alternatively, the island-shaped portion 113 may be provided at the center of the other end 110b of the line 111 of each groove 100 (see FIG. 17(h)).
17(a) and 17(b), it is possible to improve the heat sealing strength in a plurality of directions.

Further, as shown in FIG. 18, a plurality of grooves 100 are provided in the joint portion 50, each groove 100 has a communication end portion 100a that communicates with the upper edge 50a, and the other end portion 100b stays in the joint portion 50. There is. In this case, each groove 100 is formed wide. In FIG. 18, air at the time of heat sealing can be effectively discharged.

Further, as shown in FIG. 19A, a plurality of, for example, 12 grooves 110 extending in the vertical direction are provided in the upper stage of the joint portion 50, and each groove 110 has a communication end portion 100a communicating with the upper edge 50a. The other end portion 100b remains in the joint portion 50.

Further, an additional groove 115 extending in the horizontal direction is formed below the twelve grooves 110 extending in the vertical direction.

One end 115a of the additional groove 115 communicates with the left side edge 50c, and the other end 115b communicates with the right side edge 50d.

In FIG. 19( a ), the upper edge 50 a and the lower edge 50 b of the joint portion 50 intersect with the flow direction of the liquid from the inside of the bag body 3 toward the spout body 41, and the left edge 50 c and the right edge of the joint portion 50. 50d is along the flow direction of the liquid.

Alternatively, as shown in FIG. 19B, one end portion 115a of the additional groove 115 formed in the joint portion 50 may communicate with the left side edge 50c and the other end portion 115b may communicate with the lower edge 50b. As shown in (c), one end portion 115a and the other end portion 115b of the left side additional groove 115 formed in the joint portion 50 communicate with the left side edge 50c, and one end portion 115a and the other end portion of the right side additional groove 115 are formed. 115b may communicate with the right side edge 50d.

19(a), (b), and (c), at least one of the one end portion 115a and the other end portion 115b of each additional groove 115 formed in the joint portion 50 is transferred from the inside of the bag body 3 to the spout body 41. The liquid is prevented from leaking through the additional groove 115 because the liquid communicates with the edges 50c and 50d along the flowing direction of the liquid.

Further, as shown in FIG. 20(a), seven grooves 100 are provided in each of the upper stage and the lower stage of the joint portion 50, and each of the upper grooves 100 has a communicating end portion 100a communicating with the upper edge 50a. The other end portion 100b of the groove 100 remains in the joint portion 50.

The lower groove 100 has a communicating end 100a that communicates with the lower edge 50a, and the other end 100b of the groove 100 remains in the joint 50.

20A, each groove 100 is bent on the other end 100b side, but each groove 100 may be curved on the other end 100b side (see FIG. 20B), and each groove 100. May be inclined as a whole (see FIG. 20(c)). In this case, the heat seal strength in a plurality of directions can be improved.

Further, as shown in FIG. 21( a ), four grooves 100 are provided in the joint 50, and the left groove 100 includes a line 111 including a communication end 100 a that communicates with the left side edge 50 c, and a line 111 from the line 111. And a branch portion 112 that branches toward the outside of 50. Further, the right groove 100 has a line 111 including a communication end portion 100a that communicates with the right side edge 50d, and a branch portion 112 that branches from the line 111.

Alternatively, as shown in FIG. 21( b ), the branch portion 112 branching from the line 111 of each groove 100 may branch toward the inside of the joint portion 50, and as shown in FIG. The branch portions 112 branching from the line 111 of each groove 100 and the branch portions 112 branching from the line 111 of each groove 100 in the lower stage may be arranged alternately. In this case, the heat seal strength in a plurality of directions can be improved.

Alternatively, as shown in FIG. 22( a ), the branch portion 112 branching from the line 111 of each groove 100 may branch upward, and as shown in FIG. 22( b ), the line 111 of each groove 100. The branching portion 112 that branches off from may branch downward. In this case, the heat seal strength in a plurality of directions can be improved.

Further, as shown in FIG. 23A, four grooves 100 are formed in the joint portion 50, and the two left grooves 100 have a communication end portion 100a which communicates with the left side edge 50c and other grooves 100. The end portion 100b remains in the joint portion 50. The two right grooves 100 have a communicating end 100a that communicates with the right side edge 50d, and the other end 110b of the groove 100 remains in the joint 50.
Each groove 100 has a line 111 and a branch portion 112 branching from the line 111.

Alternatively, as shown in FIG. 23(b), two grooves 100 are formed in the joint portion, the left groove 100 has a communication end 100a that communicates with the left edge 50c, and the other end 100b of the groove 100 is It remains within the joint 50. Further, the right side groove 100 has a communication end portion 100a that communicates with the right side edge 50d, and the other end portion 100b of the groove 100 remains in the joint portion 50.

Each groove 100 has a line 111, a branch portion 112 that branches from the line 111, and an additional branch portion 112a that further branches from the branch portion 112. In this case, the heat seal strength in a plurality of directions can be improved.

Further, as shown in FIG. 24, twelve grooves 100 are provided in the upper stage and the lower stage of the joint portion 50, and each groove 100 in the upper stage has a communicating end portion 100a that communicates with the upper edge 50a and the other grooves 100. The end portion 100b remains in the joint portion 50.

Further, each groove 100 in the lower stage has a communicating end portion 100a communicating with the lower edge 50b, and the other end portion 100b of the groove 100 remains in the joint portion 50.

Two additional grooves 115 extending in the lateral direction are formed between the upper and lower grooves 100, and one end 115a of each additional groove 115 is a communication end communicating with the left side edge 50c and the other end. 115b is a communication end communicating with the right side edge 50d. In this case, the heat seal strength in a plurality of directions can be improved.

Alternatively, as shown in FIG. 25A, grooves 100 extending in the vertical direction are provided in the upper and lower tiers of the joint portion 50, and the upper tier groove 100 has a communicating end portion 100a communicating with the upper edge 50a. The other end portion 100b of remains at the joint portion 50. The lower groove 100 has a communication end portion 100a that communicates with the lower edge 50b, and the other end portion 100b of the groove 100 remains in the joint portion 50.

Two grooves 100 extending in the horizontal direction are formed between the grooves 100 extending in the vertical direction in the upper stage and the lower stage. Of these, the left groove 100 has a communication end portion 100a communicating with the left side edge 50c, the other end portion 100b remains in the joint portion 50, and the right groove 100 has a communication end portion 100a communicating with the right side edge 50d. And the other end portion 100b remains in the joint portion 50.
In FIG. 25A, each groove 100 is formed wide.

Alternatively, as shown in FIG. 25B, seven grooves 100 each extending in the vertical direction and having the other end portion 100b bent are formed in the upper stage and the lower stage in the joint portion 50, and the respective grooves 100 in the upper stage. Has a communicating end portion 100a communicating with the upper edge 50a, and the other end portion 100b remains in the joint portion 50.

Further, each groove 100 in the lower stage has a communicating end portion 100a communicating with the lower edge 50b, and the other end portion 100b remains in the joint portion 50. In FIG. 25B, each groove 100 is formed wide.

Alternatively, as shown in FIG. 25C, the joint portion 50 is provided with four laterally extending grooves 100. Of these, the left side groove 100 has a communication end portion 100a that communicates with the left side edge 50c, and the other end portion 100b remains in the joint portion 50. Further, the right groove 100 has a communicating end portion 100a that communicates with the right side edge 50d, and the other end portion 100b remains in the joint portion 50. In FIG. 25C, each groove 100 is formed wide. In FIG. 25C, the air at the time of heat sealing can be effectively discharged.

Next, a modification of the spout 40 will be further described with reference to FIGS.
As shown in FIGS. 26A, 26</b>B and 26</b>C, the spout 40 has a cylindrical spout body 41 having a flange 42 and a ring-shaped joint portion connected to the end of the spout body 41. And 50. As shown in FIGS. 27A and 27B, the ring-shaped joint portion 50 is welded to the inner surface of the bag body 3, and the bag body 3 and the spout 40 constitute the liquid storage container 1.

In this case, the ring-shaped joint portion 50 is welded to the inner surface of the bag body 3 (see FIGS. 27A and 27B), but even if the ring-shaped joint portion 50 is welded to the outer surface of the bag body 3. Good (see FIG. 27(c)). The joint portion 50 is welded to the inner surface or the outer surface of the bag body 3 in a region other than the peripheral portion of the bag body 3 (referred to as the surface of the bag body 3).

Next, the configuration of the joint portion 50 will be described with reference to FIGS. 28(a) to 30(e).
As described above, the joint portion 50 is connected to the end portion of the cylindrical spout body 41, is formed on a plane intersecting the axis of the spout body 41, and has a ring shape. Here, the axis line of the spout body 41 is a generatrix line on the spout body 41, and the rotation surface formed by the generatrix when rotated about a straight line parallel to the generatrix is the plane of the spout body 41. When it becomes, it refers to a straight line as an axis and passes through the center of the cylindrical spout body 41.

As shown in FIG. 28A, such a joint 50 has an outer edge 50e and an inner edge 50f, and a plurality of grooves 100 are formed on the outer surface of the joint 50. Each groove 100 has a communicating end portion 100a that communicates with the outer edge 50e, and the other end portion 100b of the groove 100 remains in the joint portion 50.
Here, the outer surface of the joint portion 50 refers to a surface that is welded to the bag body 3.

Alternatively, as shown in FIG. 28B, each groove 100 formed in the joint 50 may be bent on the other end 100b side. Alternatively, as shown in FIG. 28( c ), each groove 100 may have a line 111 having a communication end 100 a and a branch part 112 branched from the line 111.

Alternatively, each groove 100 may have a line 111 having a communication end portion 100a communicating with the outer edge 50e and an island-shaped portion 113 connected to the other end portion 100b of the line 111 (FIG. 28(d). )reference).

Further, each groove 100 has a line 111 having a communication end portion 100a communicating with the outer edge 50e and an island-shaped portion 113 connected to the other end portion 100b of the line 111, and a branch portion 112 branched from the line 111. You may further provide (refer FIG.28(e)).

Further, as described above, the joint portion 50 is connected to the end portion of the cylindrical spout body 41, is formed on a plane intersecting the axis of the spout body 41, and has a ring shape.

As shown in FIG. 29A, such a joint 50 has an outer edge 50e and an inner edge 50f, and a plurality of grooves 100 are formed on the outer surface of the joint 50. Each groove 100 has a communicating end portion 100a communicating with the inner edge 50c, and the other end portion 100b of the groove 100 remains in the joint portion 50.

Alternatively, as shown in FIG. 29B, each groove 100 formed in the joint portion 50 may be bent on the other end portion 100b side. Further, as shown in FIG. 29C, each groove 100 may have a line 111 having a communication end portion 100 a and a branch portion 112 branched from the line 111.
Alternatively, each groove 100 may have a line 111 having a communication end portion 100a communicating with the inner edge 50e and an island-shaped portion 113 connected to the other end portion 100b of the line 111 (FIG. 29(d). )reference).

Each groove 100 has a line 111 having a communication end 100a communicating with the inner edge 50f and an island-shaped part 113 connected to the other end 100b of the line 111, and a branch part 112 branching from the line 111. It may be further provided (see FIG. 29E).

As described above, the joint portion 50 is connected to the end portion of the cylindrical spout body 41, is formed on a plane intersecting the axis of the spout body 41, and has a ring shape.

As shown in FIG. 30A, such a joint 50 has an outer edge 50e and an inner edge 50f, and a plurality of grooves 100 are formed on the outer surface of the joint 50. The groove 100 of the joint 50 has a communicating end 100a that communicates with the outer edge 50e, and the other end 100b of the groove 100 remains in the joint 50. The groove 100 inside the joint 50 has a communicating end 100a communicating with the inner edge 50f, and the other end 100b of the groove 100 remains inside the joint 50.

Alternatively, as shown in FIG. 30B, each groove 100 formed in the joint portion 50 may be bent at the other end portion 100b side. Further, as shown in FIG. 30C, each groove 100 may have a line 111 having a communication end portion 100a and a branch portion 112 branched from the line 111.
Alternatively, each groove 100 may have a line 111 having a communication end 100a communicating with the outer edge 50e or the inner edge 50f, and an island-shaped portion 113 connected to the other end 100b of the line 111 (FIG. 30(d)).

Each groove 100 has a line 111 having a communicating end 100a communicating with the outer edge 50e or the inner edge 50f, and an island-shaped portion 113 connected to the other end 100b of the line 111, and a branch branched from the line 111. The part 112 may be further provided (see FIG. 30E).

The modified examples shown in FIGS. 26 to 30 have the same operational effects as those of the embodiment shown in FIGS. 11 to 27.

Next, another modification of the present invention will be described with reference to FIGS. 32 to 34.
The modified example shown in FIGS. 32 to 34 uses a gusset type bag body as the bag body 10, and the other configurations are substantially the same as those of the embodiment shown in FIGS. 1 to 31.

As shown in FIGS. 32 to 34, the liquid storage container 1 according to the present embodiment includes a bag body 3 and a spout 40 joined to the bag body 3, of which the bag body 3 has a front surface ( 32 and FIG. 33(a) front surface) and rear surface (back surface in FIGS. 32 and 33(a)) two rectangular multi-layer films 2 arranged, and this multi-layer film 2 Two multi-layer films 2′ arranged one by one on both sides (on both sides in the left-right direction in FIGS. 32 and 33(a)) are provided, and these multi-layer films 2, 2′ are adjacent to each other. The edges are liquid-tightly joined to each other by heat sealing. In the initial state, the multiple film 2 ′ is folded inward at both sides of the bag body 3 as the folding portions 22, but it gradually expands as the bag body 3 is filled with the liquid and forms a gore. ing.

These multiple films 2 and 2 ′ are joined to each other, for example, as follows to form the bag body 3. That is, first, the two multi-layer films 2 are stacked so that the long sides and the short sides of the films 2 are aligned with each other and the inner bags 21 are opposed to each other. Then, the two multi-layer films 2 ′ are sandwiched between the two multi-layer films 2 in a state of being folded in two so that the inner bag 21 is on the outside. At this time, as shown in FIG. 32, each long side of each multiplex film 2 ′ is aligned with each long side of the multiplex film 2 and the fold line 3 g of the multiplex film 2 ′ (in FIG. 32 and FIG. 33( a )). (Indicated by a broken line) is located inside the width direction of the multiple film 2. Then, in the region where the multiplex film 2'exists between the two multiplex films 2 arranged opposite to each other (the region outside the region sandwiched by the broken lines in FIG. 32), the multiplex film 2 and the multiplex film 2'. The edges are joined together in a liquid-tight manner by heat sealing except for the fold line 3g. Further, in the region where the multiplex film 2'does not exist between the two multiplex films 2 arranged opposite to each other (the region sandwiched between the broken lines in FIG. 32), the two multiplex films 2'at the upper edge 3a. The spout 40 is inserted between the spouts 40, the joint portion 50 of the spout 40 and the upper edge (the upper edge in FIG. 32) 3a of the multiple film 2 are liquid-tightly joined by heat sealing, and at the bottom edge 3b, The two multiple films 2 are liquid-tightly joined together by heat sealing.

As described above, the bag body 3 is obtained by folding the multi-layer film 2 and the multi-layer film 2'in a gusset shape and heat-sealing the periphery to form the heat-sealing portion 10. In this case, the bag body 3 has a rectangular shape having an upper edge 3a, a bottom edge 3b, and two side edges 3c, 3c. The upper edge 3a includes one upper edge heat seal portion 10a, the bottom edge 3b includes one bottom edge heat seal portion 10b, and each side edge 3c, 3c includes one side edge heat seal portion 10c. The upper edge heat seal portion 10a, the bottom edge heat seal portion 10b, and the side edge heat seal portion 10c constitute the heat seal portion 10.

Further, in the present embodiment, the upper edge 3a of the bag body 3 includes one upper edge heat seal portion 10a as described above, but two or more heat seal portions may be formed on the upper edge 3a. ..

The spout 40 has a joint 50 welded to the upper edge 3a of the bag body 3 and a spout body 41 that is connected to the joint 50 and projects outward from the bag body 3. A spout flange 42 is provided at the upper end of 41. Further, as shown in FIG. 1, the spout 40 is welded at the joint portion 50 between the inner bags 21 of the multiple film 2.

As shown in FIG. 32, FIG. 33( a) and FIG. 34( a ), the joint portion 50 of the spout 40 has a central portion 51 and is thinner than the thickness of the central portion 51 provided on both sides of the central portion 51. It is composed of an elliptic cylinder having a thin portion 52, is flat, and has a through hole 45 in the central portion 51. Usually, when the spout 40 is welded between the inner bags 21 of the multi-layer film 2 at the joint portion 50, a gap is formed between the inner bags 21 and two regions surrounded by the end portion of the joint portion 50, which easily causes poor sealing. .. In order to prevent this, thin portions 52 are provided on both sides, and a gap is prevented by melting the thin portions 52 during welding.

The spout body 41 of the spout 40 is made of a tubular body having a substantially U-shaped cross section, and a spout flange 42 is provided on the upper edge of the spout body. An opening 44 is formed in the bottom portion 43 of the spout body 41. Ventilation can be secured between the liquid storage container 1 and the outer container 5 to be described later by the opening 44, and when the content liquid is pumped out during use, the liquid storage container 1 and the outer container 5 are passed through the opening 44. By introducing gas between the liquid storage container 1 and the atmosphere body from the outside of the liquid storage container 1, the content liquid in the liquid storage container 1 can be smoothly pumped out. Further, a spout upper member 70 is provided on the bottom portion 43 in the spout main body 41 so as to extend in the vertical direction.

The spout flange 42 of the spout 40 is attached to the opening 5a formed in the outer container 5 via the above-described holder 80, and the liquid storage container 1 is supported in the outer container 5.

Further, the gusset-shaped folds 3g of the bag body 3 are near both end positions of the joint portion 5 of the spout 40.
The fold line 3g may be provided anywhere between both sides of the joint portion 5 of the spout 40 and the left and right ends of the bag body 3. For example, as shown in FIGS. 33(b) and 34(b), by bringing the fold line 3g to an intermediate position between both side positions of the joint portion 5 of the spout 40 and the left and right ends of the bag body 3, As for the edge heat seal portion 10a and the joint portion with the upper edge 3a of the multiple film 2, two left and right four-way branches shown in FIG. The strength of the bag body 3 can be improved by branching the directions to disperse the joints.

1 Liquid Storage Container 3 Bag Body 3a Top Edge 3b Bottom Edge 3c Side Edge 3g Fold 5 Exterior Container 5a Opening 10 Heat Sealing Part 20 Outer Bag 21 Inner Bag 22 Folding Part 40 Pouring Out 41 Outlet Flange 47 Outlet Flange 47 Middle Part 50 Joining part 50a Upper edge 50b Lower edge 50c Left edge 50d Right edge 80 Holding tool 80A Combination of spout and holding tool 100 Groove 100a Communication end part 100b Other end 111 Line 112 Branch part 113 Island part 115 Additional groove

Claims (10)

At the spout that is joined to the bag body,
The spout body,
The spout body is connected to the spout body, and a joint portion is joined to the bag body,
The joint has at least one groove formed on its outer surface,
One end portion of the groove has a communicating end which communicates with the edge of the joint, the other end portion of the groove remains engaged in bonding portion without reaching the edge of the junction,
The spout has a groove line and a branch portion branched from the groove line, the groove line includes the communication end portion, and the branch portion remains in the joint portion . At the spout that is joined to the bag body,
The spout body,
The spout body is connected to the spout body, and a joint portion is joined to the bag body,
The joint has at least one groove formed on its outer surface,
One end of the groove is a communicating end communicating with the edge of the joint, and the other end of the groove remains in the joint without reaching the edge of the joint,
The groove has a first groove line and a second groove line whose both ends are connected to the first groove line, the first groove line including the communication end, and the second groove line. The groove line of No. stays in the joint portion. At the spout that is joined to the bag body,
The spout body,
The spout body is connected to the spout body, and a joint portion is joined to the bag body,
The joint has at least one groove formed on its outer surface,
One end of the groove is a communicating end communicating with the edge of the joint, and the other end of the groove remains in the joint without reaching the edge of the joint,
The joint portion has a pair of side edges extending along the flow direction of the liquid from the bag body toward the spout body, and one end portion and the other end portion have an additional groove communicating with the edge of the joint portion, At least one of one end and the other end of the additional groove is formed at one side edge of the pair of side edges. The spout according to claim 1 or 2 , wherein the joint portion is joined to an upper edge of the bag body, and an edge of the joint portion includes a peripheral edge of the outer surface. The spout according to claim 1 or 2, wherein the joint has a ring shape and is joined in a plane of the bag body. With the bag body,
Liquid container, characterized in that the bag body is joined to, obtain Preparations and spout according to any one of claims 1 to 5. 7. The liquid container according to claim 6 , wherein the spout is made of synthetic resin as a whole, and the spout and the bag body are welded to each other. The liquid container according to claim 6 , wherein the spout is directly attached to an outer container having an opening, and the spout has a flange that engages with the opening. 7. The liquid storage container according to claim 6 , wherein the spout is attached to an outer container having an opening via a holder, and the spout has a flange that engages with the holder. An outer container,
This was housed in the outer container, the union of the liquid container and the outer container, characterized in that to obtain Bei a liquid container according to any one of claims 6 to 9.

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