JP2004299770A - Pouch container having spout and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pouch container having a spout from which a content can be fully squeezed out even if the content is a viscous fluid, and its manufacturing method. <P>SOLUTION: The pouch container having a spout is constituted of a container body 10 formed of a flexible sheet into a bag shape and a spout 20 formed of a heat-bonding resin to be fitted to the contain body 10. The spout 20 is constituted of a body part 21 having a guide port 21a of a content and a plug 22 for sealing the guide port 21a by screwing a sealing part 22a into the guide port 21a of the container body 21, with the side face of the body 21 being heat-sealed to the upper edge of the container body 10. The body 21 is a flexible plastic molding and can be pressed to be easily deformed. The plug 22 is, however, a hard plastic molding and is not easily deformed when pressed with a pressing force by seal bar at heat sealing. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pouch container with a spout, which is suitable when the content is a viscous fluid such as a jelly beverage.
[0002]
[Prior art]
In recent years, as a container for filling a liquid beverage such as a soft drink, a pouch with a spout attached by heat-sealing a spout having a content outlet port formed therein to a container body formed in a bag shape by a flexible sheet. Containers are being used.
[0003]
[Patent Document 1]
JP 08-133308 A
[Problems to be solved by the invention]
However, as a spout of a pouch container with a spout as described above, a hard plastic molded body is generally used. Therefore, when the content is a viscous fluid such as a jelly beverage, the spout is used. There was a problem that the contents staying in the part could not be squeezed out to the end.
[0005]
In order to solve these problems, it is conceivable to add flexibility to the spout itself, but if the spout had flexibility, the pressing force when heat sealing to the container body was used. A new problem occurs in that the spout is deformed and the spout cannot be mounted on the container body.
[0006]
Therefore, an object of the present invention is to provide a spout-equipped pouch container capable of squeezing the contents to the end even when the contents are a viscous fluid, and a method of manufacturing the same.
[0007]
Means for Solving the Problems and Their Effects
In order to solve the above problems, the invention according to claim 1 is a pouch container with a spout in which a spout is mounted on a bag-shaped container body, wherein the spout is heat-sealed to the container body. An outlet is formed, comprising: a flexible main body, and a plug for closing the outlet by being inserted into the outlet of the main body, wherein the outlet of the main body is closed by the plug. The present invention provides a pouch container with a spout, characterized in that, in a state where is closed, the bending of the heat seal portion in the main body is suppressed.
[0008]
As described above, the spout-equipped pouch container is heat-sealed to the container main body. Since the main part of the spout has flexibility, the viscous fluid, such as a jelly beverage or the like, is used. In this case, the contents retained in the spout portion can be squeezed out to the end.
[0009]
In addition, the spout is configured such that the outlet is closed by inserting a plug into the outlet of the contents formed in the main body, and in a state where the outlet is closed by the plug. Since the bending of the heat sealing portion in the main body is suppressed, the spout is heat-sealed to the container main body in a state where the outlet of the main body is closed by the plug. By employing the manufacturing method according to the second aspect of the present invention, the above-described pouch container with a spout can be reliably manufactured.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. As shown in FIGS. 1 to 4, the pouch container 1 with a spout is made of an aluminum foil, an ethylene vinyl alcohol film, or the like on the outer surface of a synthetic resin film having thermal adhesion such as linear low-density polyethylene or polypropylene. A container body 10 formed in a bag shape from a flexible sheet laminated with a heat-resistant film such as a biaxially oriented polyester film, a biaxially oriented polyamide film, or a biaxially oriented polypropylene film on which a gas barrier layer is laminated; And a spout 20 formed of a thermo-adhesive resin to be mounted on the spout.
[0011]
The container body 10 includes a pair of front and back exterior sheets 11 and a pair of left and right gusset sheets 12 that are folded inward from both sides of the two exterior sheets 11 to form left and right gusset portions. The peripheral edge of the inner surface of the sheet 12 is heat-sealed to the inner surface of the exterior sheet 11, and the upper edge and the lower edge of the inner surface of the exterior sheet 11 are heat-sealed with each other to form a bag. Note that the hatched portion in FIG. 2 indicates a heat seal portion.
[0012]
In the spout 20, a main body 21 having a content outlet 21a having an internal thread formed on an inner peripheral surface and a closing portion 22a having an external thread formed on an outer peripheral surface are screwed into the outlet 21a of the main body 21. Thus, the outlet 22a is closed and the plug 22 is closed. The side surface of the main body 21 is heat-sealed to the upper edge of the container main body 10.
[0013]
The main body 21 is formed by injection molding a plastic material such as low-density polyethylene, linear low-density polyethylene, ethylene-vinyl acetate copolymer, polybutadiene, polyvinyl acetate or a mixture thereof containing a rubber component such as ethylene propylene rubber. It is a plastic molded body having flexibility and is easily deformed when pressed. Further, even when the main body 21 is made thin, a multi-layered formation with a plurality of resins may be used so as to obtain strength.
[0014]
The plug 22 is a hard plastic molded product obtained by injection molding a plastic material such as high-density polyethylene, low-density polyethylene, linear low-density polyethylene, polypropylene, polystyrene, or polyester. It does not easily deform under the pressure of the bar.
[0015]
Therefore, in a state where the closing portion 22a of the plug 22 is screwed into the outlet 21a of the main body 21 and the outlet 21a is closed, the bending of the main body 21 is suppressed by the hard plug 22. I have.
[0016]
As described above, in the pouch container 1 with a spout, the body portion 21 of the spout 20 that is heat-sealed to the container body 10 has flexibility, and can be pressed with a finger as shown in FIG. Squeezes the contents staying in the vicinity of the main body 21 of the spout 20 to the end even if the contents are a viscous fluid such as a jelly drink. Can be put out.
[0017]
Further, the spout 20 is configured such that the outlet 21a is closed by screwing the closing part 22a of the plug 22 into the outlet 21a formed in the main body 21 thereof. In a state in which the outlet 21a is closed, the bending of the heat sealing portion of the main body 21 is suppressed, so that the outlet 21a of the main body 21 is connected to the plug 22 as shown in FIG. In the closed state, the container body 10 is sandwiched between the upper edges of the container body 10 and, as shown in FIG. Without doing, the spout 20 can be reliably heat-sealed to the container body 10.
[0018]
When the outlet 21a of the main body 21 is closed by the plug 22, the hard plug 22 is screwed into the outlet 21a of the main body 21, so that the thickness of the main body 21 is reduced to some extent. Also, the heat sealing performance of the main body 21 with respect to the container main body 10 does not decrease. Accordingly, by reducing the thickness of the main body 21, the flexibility of the main body 21 in the spout 20 can be improved, and the amount of material used to form the main body 21 is reduced, so that the product cost is reduced. Can be reduced.
[0019]
In the above-described embodiment, the plug 22 is screwed into the outlet 21a formed in the main body 21 of the spout 20, but the present invention is not limited to this, and the plug is inserted into the outlet. By locking this state, the outlet of the spout may be closed.
[0020]
Further, in the above-described embodiment, the upper edge of the main body portion 21 of the spout 20 that is heat-sealed to the container main body 10 and the upper edge of the container main body 10 substantially coincide with each other, but the present invention is not limited to this. Instead, the outlet may be projected upward from the container body 10. However, in this case, it goes without saying that the closing portion of the plug that closes the outlet must have a length that reaches the heat seal portion of the main body.
[0021]
In the above-described embodiment, the case where the container body 10 is a side gusset bag has been described. However, the present invention is not limited to this, and the present invention is also applied to a case where the container body is a flat bag or a bottom gusset bag. It goes without saying that it can be done.
[0022]
In addition, the use (contents) of the pouch container according to the present invention is not limited to viscous seasonings such as jelly drinks, liquid foods, and pastes, viscous fluids such as mayonnaise and jam, but also general soft drinks and the like. It may be a granular material such as a liquid or a granule.
[Brief description of the drawings]
FIG. 1 is a perspective view showing one embodiment of a pouch container with a spout according to the present invention.
FIG. 2 is a plan view showing the pouch container with a spout in the above-described pouch container with one outer sheet removed.
FIG. 3 is a sectional view taken along line XX of FIG. 1;
FIG. 4 is a cross-sectional view showing a state in which a spout outlet of the pouch container with a spout is closed by a spout;
FIG. 5 is a sectional view showing a deformed state of the spout in the pouch container with a spout according to the first embodiment.
FIGS. 6 (a) and (b) are process diagrams showing a manufacturing process of the pouch container with spout according to the first embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pouch container with spout 10 Container main body 11 Exterior sheet 12 Gusset sheet 20 Spout 21 Main body 21a Outlet 22 Plug 22a Closed part

Claims (2)

In a pouch container with a spout in which a spout is attached to a bag-shaped container body,
The spout is heat-sealed to the container body, and has a flexible body portion formed with a content outlet, and closes the outlet by being inserted into the outlet of the body portion. With a faucet,
A pouch container with a spout, wherein, in a state where the outlet of the main body is closed by the plug, bending of a heat seal portion in the main body is suppressed. It is a manufacturing method of the pouch container with a spout according to claim 1,
A method for manufacturing a pouch container with a spout, wherein the spout is heat-sealed to the container body in a state where the outlet of the main body is closed by the plug.

Images