JP3218290B2 - Bag container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag container for storing a fluid such as a liquid food or seasoning, a liquid detergent or the like, and a granular material (hereinafter referred to as a container) such as a powdered soap.

[0002]

2. Description of the Related Art Conventionally, refillable and disposable types are widely used as bag containers for storing the above-mentioned contents. This type of bag container
Usually, it is created by stacking flexible sheets and heat-sealing the end regions thereof, and a spout for taking out the contents is provided in the upper region. Then, the spout is opened by opening the spout by tearing the spout by hand or cutting it with scissors or the like.

[0003] By the way, when the contents are poured out, it is preferable that the spout is always open during the pouring process. Otherwise, if the bag is not pressurized by pushing it by hand, the dispensing will not be performed smoothly. Therefore, in a bag container made by stacking flexible sheets as described above, when a spout portion is cut, processing is performed so that the cross-sectional shape becomes circular or elliptical.

[0004] However, the spout thus processed is
In the process of taking out the contents, there is a problem that the opposing inner surfaces have the same length, so that they are easily brought into close contact with each other and the pouring cannot be carried out smoothly. Further, a bag container in which a pipe-shaped member is attached and the shape of the opening is maintained has been proposed, but the manufacturing process becomes complicated and the cost increases.

Further, Japanese Patent Application Laid-Open No. Hei 8-2538 discloses a bag container provided with a spout having a hollow semi-cylindrical cross section when the spout is cut. As described above, by making the cross-sectional shape of the spout semicircular, the lengths of the opposing surfaces are different from each other, and it is possible to prevent the opposing surfaces from sticking during the pouring operation.

[0006]

However, as described above, when the cross-sectional shape of the spout is made semicircular, although the close contact of the spout can be prevented, the opening area thereof is maintained substantially constant. In the use of, there is a problem that the outflow amount cannot be adjusted and the outflow amount is small. Specifically, referring to FIG. 1, in the semicircular opening indicated by the solid line, even if the bag container is pressed to increase the outflow to some extent, a constant pressure is applied to the inner surface of the spout, and It is only deformed as indicated by the dotted line, and the opening area S2 does not greatly change as compared with the original area S1 (solid line portion). That is, in the actual pouring operation, even if an attempt is made to obtain a larger amount of outflow, the conventional semi-circular cross-sectional configuration cannot do so.

[0007] In addition to the above-mentioned problem, a bag container having a spout having a semicircular cross section wastes space in packing and transporting, thereby increasing the distribution cost. That is, as shown in FIG. 2, if the spout is semicircular, the spout becomes bulky when stacked and packed (in this case, the height of the five stacked pieces is L1), and the space at the time of conveyance is large. It is disadvantageous in terms of effective utilization of the information.

The present invention has been made in view of the above-mentioned problems, and enables smooth pouring without intimate contact between the inner surfaces of the pouring ports at the time of pouring, and secures a certain amount of outflow. It is an object of the invention to provide a bag container with a spout that can be used.

Further, the present invention provides a bag container as described above, which further has a spout capable of adjusting the amount of outflow, enabling smoother pouring, and effective use of space during transportation. It is intended to provide a container.

[0010]

In order to solve the above-mentioned problems, a first aspect of the present invention is to stack a sheet made of a composite material having a sealant layer and a barrier layer to form an accommodating portion for accommodating an object. In a bag container formed with a spout for pouring out the contents, the spout is swelled in the same direction, and each of the first curved surfaces is formed in a substantially arc shape different from each other, Defined by the second curved surface,
The opening cross section defined between these curved surfaces has a crescent shape.

According to a second aspect of the present invention, sheets of a composite material having a sealant layer and a barrier layer are overlapped and fused together so as to form a storage section for storing the stored material, and the stored material is poured. In a bag container formed with a spout to be discharged, the spouts are bulged in opposite directions to each other,
A first curved surface formed in a substantially arc shape different from the first curved surface;
The opening is defined by the curved surface of

In the above two inventions, since the opening of the spout is defined by the first curved surface and the second curved surface of the different arcs, close contact of the spout is prevented, and the contents can be smoothly discharged. it can. According to the first aspect of the present invention, since the first curved surface and the second curved surface are bulged in the same direction, the space during packing and transportation can be made more efficient, and one curved surface is actually When a certain pressure is applied during the pouring operation, the container is deformed to increase the amount of outflow of the contents, that is, the amount of outflow can be adjusted. According to the second aspect of the present invention, the first curved surface and the second curved surface are bulged in directions opposite to each other, so that it is possible to secure a certain amount of outflow in addition to the smooth outflow of the contents. .

In the configuration of the present invention described above, the curved surface includes not only a curved surface as a whole but also a partially linear portion, or a curved surface as a combination of linear portions. It is a concept that also includes those that are composed, and further include those that partially include irregular curves or that are entirely composed of irregular curves.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 3, (a) is a diagram showing a spout portion in the bag container of the present invention, and (b) is a diagram showing a portion B in FIG.
FIG. 3C is a cross-sectional view along the line B, and FIG. 3C is an enlarged view of FIG.

The bag container 1 is made of a polyolefin layer such as polyethylene or polypropylene (a layer to be heat-sealed and defined as a “sealant layer”), aluminum, PET,
Composite materials 1a and 1b composed of barrier layers such as nylon and EVAL (materials used differ depending on the application) are overlapped so that the sealant layers are opposed to each other, and the parts indicated by oblique lines are heat-sealed. Is done. Note that the actual bag container containing the contents is opened in the upper region indicated by reference numeral 1c, the contents are stored in the internal space (housing portion) 2 from this portion, and then the opening 1c is heat-sealed. Created. In this case, the bag container may have a shape in which only two sheets are stacked, or may have a self-dimensional shape with a V-shaped sheet interposed therebetween. Is not limited.

When a bag container is manufactured, a spout 10 is formed at an upper portion thereof. The spout port is opened by cutting a substantially middle portion (line BB) with scissors or the like. A score line may be separately formed at the torn portion.

When the spout 10 is cut, its cross section is composed of a first curved surface 10a and a second curved surface 10b having a curvature different from this curved surface, and both bulge in the same direction. I have. Here, a straight line P defined when the sheet-like composite materials 1a and 1b are fused is used as a reference line, a curved surface farther from the reference line is a first curved surface, and a curved surface closer to the second curved line is a second curved surface.
Is defined as a curved surface.

The spout 10 shown in FIG.
a and the second curved surface 10b are both constituted by circular arcs, and since the two curved surfaces have different curvatures, they have a crescent shape as a whole.

As described above, when the cross section of the spout is formed into a crescent shape by two arcs having different curvatures, the following operation and effect can be obtained. As shown in FIG. 4, in a normal state, a portion S3 indicated by oblique lines is in an open state, and the contents flow out through this open area. In this case, when the storage bag is greatly inclined or the storage portion is pressed by hand in order to further increase the outflow amount, a constant pressure is applied to the inner surface of the spout, so that the second curved surface 1 is formed.
0b swells symmetrically with respect to the reference line P (the swelling state is indicated by 10b '), and the opening area thereof becomes large. That is, as is clear from the comparison with FIG. 1, the larger the opening area, the more smoothly the outflow of the stored contents can be performed according to the pouring operation.

According to the bag container provided with such a crescent-shaped spout, when the pouches are stacked,
As shown in FIG. 5, since the first curved surface 10a of the spout of the bag container on the second curved surface 10b recessed downward fits, the space in the vertical direction when stacked and packed is reduced. Efficiency can be improved, and more storage bags can be packed in the same space. That is, as is apparent from comparison with FIG. 2, when the same number of bag containers are stacked and packed, the vertical bulk is smaller in the present embodiment (L1).
> L2), the transportation cost can be reduced.

As described above, the spout 10 is
When formed by two curved surfaces having different curvatures, OD: OC = 1: 0.2 to 0.0 to effectively prevent adhesion of both surfaces at the time of pouring and to obtain the above-described effects. 8,
Desirably, the ratio is 1: 0.2 to 0.4 (in this case, as shown in FIG. 3, O is a point where the center line Q of the two arcs intersects with the reference line P, and D is the curved surface 10 a Maximum bulge point, C
Is the maximum bulging point of the curved surface 10b).

FIG. 6 is a diagram showing a second embodiment of the present invention. In this embodiment, the second curved surface 1
0b is bulged in a direction opposite to the first curved surface 10a to form a spout. Thus, the second curved surface 1
0b bulges out to the opposite side of the first curved surface 10a,
The opening area can be widened in advance, and the close contact of the spout can be prevented. In addition, a large outflow amount can be secured, and a smooth outflow can be performed. Further, since the second curved surface 10b has flexibility, it is possible to bulge in the same direction as the first curved surface 10a by pressing, as shown by the dotted line in the drawing, as described above. The same operation and effect as those of the first embodiment can be obtained. Note that even in such a configuration, OD: OC == 1: 0.2-0.
8, preferably 1: 0.2-0.4.

In the embodiment described above, the curved surface forming the spout is an arc, but the curved surface in the present invention is
In addition to the arc as described above, for example, FIG.
The configuration as shown in (e) is also included. In each of these modified examples, the second curved surface on the side closer to the reference line P is modified.

The curved surface of the present invention only needs to be formed in a substantially arc shape as a whole, and partially includes a linear portion 10c as shown in FIGS. Alternatively, as shown in FIG. 7C, an arc-shaped surface may be formed entirely by only the linear portion 10c. These figures (a)
The examples shown in (c) to (c) are reference examples and the gist of the present invention.
Is not directly related to Further, as shown in FIG. (D), an arc-shaped surface may be formed by a plurality of curves 10d, 10e, and 10f having different curvatures, or as shown in FIG. An arc-shaped surface may be formed. Of course, such a modified example may be applied to the first curved surface 10a, or may be applied to curved surfaces that bulge in opposite directions as shown in FIG.

Further, the spout configured as described above may be formed in the bag container one by one, or may be formed continuously in plural.

As a method of forming the above-described spout, the sheets 1a and 1b made of a composite material having a sealant layer and a barrier layer are arranged so that the respective sealant layers are opposed to each other, and there is a correspondence between the two. It can be created by pressing the mold from above and below with a mold interposed with a mandrel with a cross-sectional shape to be made, and heat-sealing the two. can do. Further, when the spout is formed by the above-described method, the spout is asymmetric, so that wrinkles and sagging are likely to occur in the opening 1c of one of the sheets. It is desirable to temporarily fix or adjust the size of the sheet shape.

[0028]

As described above, according to the bag container of the present invention, the inner surfaces opposed to the spout do not adhere to each other at the time of pouring, and the contents can be smoothly discharged.
In addition, since a certain amount of outflow is secured and the outflow can be adjusted, smoother pouring can be performed, and furthermore,
Effective use of space during transportation can be achieved.

[Brief description of the drawings]

FIG. 1 is an enlarged view showing a spout of a conventional bag container.

FIG. 2 is a diagram showing a spout portion in a state where conventional bag containers are stacked.

FIG. 3 includes (a) to (c), wherein (a) is a view showing a spout portion in the bag container of the present invention, and (b) is a view (a).
(C) is an enlarged view of FIG. (B).

FIG. 4 is a view for explaining the operation of the spout shown in FIG. 3 (c).

FIG. 5 is a view showing a spout portion in a state where bag containers according to the present invention are stacked.

FIGS. 6A to 6C are diagrams showing reference examples.
(D) and (e) are diagrams showing another embodiment of the extraction port of the bag container of the present invention.

FIG. 7 includes (a) to (e), each showing a modification of the spout of the bag container of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bag container, 1a, 1b ... Sheet (composite material), 2 ... Internal space, 10 ... Outlet, 10a, 10b ... Curved surface.

Claims (5)

(57) [Claims] 1. A sheet made of a composite material having a sealant layer and a barrier layer is overlaid and fused together so as to form an accommodation section for accommodating an object, and a spout for discharging the object is formed. In the bag container, the spout is swelled in the same direction, and is defined by a first curved surface and a second curved surface each formed in a different substantially arc shape, and an opening cross section defined between these curved surfaces is formed. A bag container having a crescent shape. 2. A sheet made of a composite material having a sealant layer and a barrier layer is overlaid and fused together so as to form an accommodation section for accommodating the contents, and a spout for discharging the contents is formed. In the bag container, the spouts are swelled in opposite directions, and an opening is defined by a first curved surface and a second curved surface each formed in a different substantially arc shape. container. 3. The bag container according to claim 1, wherein at least one of the first curved surface and the second curved surface has an irregular curve portion. 4. The bag container according to claim 1, wherein the first curved surface and the second curved surface have different curvatures from each other. 5. An arc of the first curved surface and the second curved surface is represented by O at an intersection between a center line of each arc and a reference line in each arc, D being a maximum bulging point of the first curve, When the maximum swelling point of the second curve is C, OD: OC = 1: 0.2
Claim 1 characterized by being formed in ~ 0.8.
5. The bag container according to 2 or 4.