JP2004210300A - Fitting method for closable opening device, and packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fitting method for a closable opening device, which does not cause the delamination of an openable area laminate and prevents a part of the laminate from remaining on the container side and a liquid content from infiltrating into the section of a container wall, and a packaging container using the opening device. <P>SOLUTION: The closable opening device includes a frame forming an outlet, a removable cap, and a movable ring moved in reverse to the cap, and the opening device is fitted on the packaging container for a liquid food. The frame comprises a flange, the cylindrical outlet, and a central board divided into a plurality of nails. The cap, having a columnar body drooping from the center of the bottom of the cap, is fitted on the frame in which the movable ring is housed. A joining zone is formed between the bottom of the flange and the peripheral surface of the openable area. Another joining area is also formed between the bottom face of the columnar body of the cap and the upper surface of the openable area. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
The present invention relates to a method of mounting a closable opening device for a liquid food packaging container having an openable area, and a packaging container to which the opening device is attached.
[0002]
[Prior art]
Many liquid foods, such as fruit juices, UHT (ultra high temperature processed) milk, wine, tomato sauce, etc., are sold in liquid food packaging made of aseptic packaging materials.
A typical example of such a liquid food packaging container is a well-known parallel or parallelepiped package for liquid food or liquid food, a roof-shaped paper container, which is formed by folding and sealing the laminated packaging material. It is formed. The wrapping material has a multilayer structure comprising a layer of fibrous material such as paper covered on both sides with a heat seal plastic material such as polyethylene. Also, in the case of a sterile package for long-term storage, such as UHT milk, the wrapping material comprises a layer of oxygen barrier material, for example defined by a thin film of aluminum, which layer is overlaid on the layer of heat-sealed plastic material; It is further covered with another layer of heat-sealable plastic material that will eventually form the inner surface of the package in contact with the food.
[0003]
Liquid food packaging containers of the type described above generally comprise a closable opening device for pouring out. Such an opening device substantially includes a frame attached to a hole, punch, or severable portion of a vessel wall forming an opening, and a cap.
An excellent method of directly attaching an opening device to an openable area where a laminate film is attached to a punch hole of a container wall and a packaging container to which the opening device is attached are described in, for example, JP-A-2001-72008. .
[0004]
[Problems to be solved by the invention]
In the above prior art, when the cap is opened from the spout along the screw, the bottom of the cap welded to the openable area (prelaminate hole, called PLH) is pulled up while rotating, and the welded openable area is rotated. Is opened by screwing. However, since the openable area of the laminate has a multilayer structure, if the adhesion between the layers is not sufficient, only the upper layer welded to the cap is torn off and part of the lower layer is exposed to the container side. There is an inconvenience that something that remains.
Further, since the openable area is threaded, a plurality of polyolefin layers constituting the openable area laminate may extend, and a disadvantage may occur in that a thread-like residue remains on the cut (ruptured) surface.
Further, a void (air gap) is likely to be formed in the hole of the container wall forming the opening and the cross section of the punched hole, and when the openable area laminate near the void is cut, the liquid content permeates the cross section of the container wall. There is a need to reduce danger.
[0005]
According to the present invention, even in a region where the laminate can be opened, the whole is cut without delamination of the laminate and a part does not remain on the container side, or a thread-like residue does not remain on the cut (break) surface. It is another object of the present invention to provide a method of mounting a closable opening device and a packaging container capable of preventing liquid contents from penetrating into a cross section of a container wall.
[0006]
[Means for Solving the Problems]
In order to solve this problem, the invention provides a liquid food packaging container having an openable area, a frame forming a spout, and a removable cap attached to the frame to close the spout. A method of mounting a closable opening device including a movable ring housed inside the frame and moving in the opposite direction to the cap in conjunction with the opening movement of the cap, and a packaging container thereof, comprising: a flange portion; A frame that is formed integrally with a spout shaped like a spout and a central plate portion that is divided into a plurality of claw pieces connected to the spout and via a hinge and that is pushed downward by a movable ring during opening. Then, the cap having a columnar body hanging down from the center of the bottom surface is attached to the frame containing the movable ring, and the bottom surface of the flange portion of the frame and the opening are attached. The joining band is formed between the peripheral surface of the band, and forming a junction zone between the upper surface of the bottom and the openable region of the columnar body of the cap.
[0007]
With this configuration, even in the area where the laminate can be opened, the whole is cut without delamination of the laminate and a part thereof does not remain on the container side, or a thread-like residue is formed on the cut (ruptured) surface. The liquid contents can be prevented from permeating into the cross section of the vessel wall without remaining.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
The mounting method of an opening device according to claim 1 of the present invention is a method for mounting a spout in a packaging container for a liquid food having an openable area, and mounting the spout in the frame to close the spout. A method of mounting a closable opening device including a removable cap to be removed and a movable ring housed inside the frame and moving in the opposite direction to the cap in conjunction with the opening movement of the cap,
It consists of a flange part, a cylindrical spout, and a central plate part which is divided into a plurality of claw pieces connected to the spout through a hinge and pushed downward by a movable ring at the time of opening, and is integrally molded. Preparing a frame to be
Mounting the cap having a columnar body hanging down from the bottom center on the frame that houses the movable ring;
Forming at least one joining zone between a bottom surface of a flange portion of the frame and a peripheral surface of the openable area so as to join the frame to the packaging container around the openable area; Forming a junction zone between the bottom surface of the column of the cap and the top surface of the openable area,
It is characterized by the following.
[0009]
With the above configuration, the following operations are provided. Liquid food having at least one joining zone formed between the bottom surface of the flange portion of the frame and the peripheral surface of the openable area, joining the frame to the packaging container around the openable area, and having the openable area For a packaging container, a frame forming a spout, a removable cap attached to the frame to close the spout, and a cap that is housed inside the frame and interlocked with the opening movement of the cap. A closable opening device including the cap and a movable ring moving in the opposite direction is mounted. At the time of opening the container, when the cap is moved in the opening direction to open the container, first, since the bottom of the columnar body of the cap and the upper surface of the openable area are joined, the openable area of the joint zone is formed. A small break occurs. It does not require much power because it is small. At the same time, the movable ring moves downward in the opposite direction to the cap in conjunction with the movement. The lower end of the movable ring pushes the plurality of claw pieces, rotates about the hinge of the spout, and opens downward from the center of the plurality of claw pieces. The force concentrates on the central portion of the openable area (that is, the small breaking hole), and the breaking can be easily enlarged with a small force, and thereafter, the breaking area can be easily enlarged. Since the material in the openable area that has been broken is connected to the container wall on the side opposite to the broken area, it does not fall into the container. Similarly, the air gap in the cross section of the vessel wall is also maintained, so that the liquid content does not permeate the cross section of the container after opening.
[0010]
According to a second aspect of the present invention, at least one ridge is formed on each of the bottom surface of the flange portion of the frame and / or the bottom surface of the columnar body of the cap, and the ridges are heat-sealed. It is characterized by forming a junction zone.
According to the above configuration, when heat is applied to the surface to be heated, the heat energy is concentrated on the ridges and is reliably melted to form a bonding zone.
[0011]
According to a third aspect of the present invention, a bonding zone is formed by applying an adhesive linearly to the bottom surface of the flange portion of the frame and / or the bottom surface of the columnar body of the cap.
According to the above configuration, there is an effect that a junction zone can be easily formed.
[0012]
In the mounting method according to the fourth aspect of the present invention, the openable area is formed of a laminate film including at least one barrier layer of an oxygen barrier material, and a plurality of weakening lines are formed from the center of the breaking start point. .
The above configuration has an effect of protecting an openable area where the barrier property may be impaired in the packaging container.
[0013]
In the mounting method according to a fifth aspect of the present invention, the ridge formed on the bottom surface of the flange portion of the frame and / or the bottom surface of the columnar body of the cap is heated by the micro frame.
According to the above configuration, there is an effect that the bottom surface of the central plate portion can be reliably and easily brought into contact with the upper surface of the openable area of the packaging container to form a bonding zone.
[0014]
In the mounting method according to the sixth aspect of the present invention, the openable area is a part of the container wall of the packaging container and is defined by a weak line, and a plurality of weak lines are formed from the center of the breaking start point. Is formed.
With the above-described configuration, the compartment can be formed only by the weakening line, and the opening area of the packaging container can be reliably and easily formed, and the simple attachment can be performed.
[0015]
The packaging container invention according to claim 7 of the present invention includes a frame forming a spout, a removable cap attached to the frame to close the spout, and the cap housed inside the frame. A liquid food packaging container having an openable area, provided with a closable opening device including the cap and a movable ring that moves in the opposite direction in conjunction with the opening movement of the liquid food,
The frame is divided into a flange portion, a cylindrical spout having a thread formed on an outer peripheral surface thereof, and a plurality of claw pieces connected to the spout and a hinge via a hinge. Consists of a central plate that can be expanded,
The cap having a columnar body hanging down from the bottom center is attached to the frame containing the movable ring,
At least one joining zone is formed between the bottom surface of the flange portion of the frame and the peripheral surface of the openable area so as to join the frame to the packaging container around the openable area, A joint zone is formed between a bottom surface of the columnar body of the cap and an upper surface of the openable area.
[0016]
With the above configuration, when the cap is moved in the opening direction to open the container, the movable ring moves in the direction opposite to the cap in conjunction with the movement. The lower end of the movable ring pushes the plurality of claw pieces, rotates about the hinge of the spout, and opens downward from the center of the plurality of claw pieces. The force is concentrated on the central portion of the openable area, and the fracture starting point can be easily formed with a small force, and thereafter, the fracture area can be easily enlarged. Since the material in the openable area that has been broken is connected to the container wall on the side opposite to the broken area, it does not fall into the container. Similarly, since the gap (air gap) in the cross section of the container wall is also maintained, there is an effect that the liquid content does not permeate the cross section of the container after opening.
[0017]
Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a sectional view of an opening device according to an embodiment of the present invention. In this embodiment, a frame 3 forming a spout, a removable cap 13 attached to the frame 3 to close the spout, for the liquid food packaging container 2 having an openable area 1, FIG. 4 shows a closable opening device 4 including a movable ring 15 that is housed inside a frame and moves in the opposite direction to the cap in conjunction with the opening movement of the cap.
In this embodiment, the central plate is divided into a flange portion 5, a tubular spout portion 6, and a plurality of claw pieces 16 connected to the spout portion 6 via a hinge 7, and is pushed downward by a movable ring at the time of opening. A cap having a columnar body 18 suspended from the center of the bottom surface is mounted on the frame containing the movable ring, and a bottom surface of the flange portion 5 of the frame is prepared. And a peripheral surface 11 of the openable area, and a junction zone A is formed between the bottom surface of the column 18 of the cap and the upper surface of the openable area 8.
[0018]
In this embodiment, the joint zone is formed by heat sealing. When heat is applied to the bottom surface of the surface to be heated, the heat energy is concentrated and reliably melted to form a bonding zone.
In this embodiment, the openable area 1 is made of a laminate film including at least one barrier layer of an oxygen barrier material, and a plurality of weakening lines are formed from the center of the breaking start point. In the packaging container, the openable area where the barrier property may be impaired is protected, and the laminate film in the openable area can be easily broken and pushed.
[0019]
In the mounting method in this mode, a joining zone is provided between the bottom surface of the flange portion 5 of the frame and the peripheral surface 11 of the opening area 1 so that the frame 3 is joined to the packaging container around the opening area. Similarly, a bonding zone B is formed between the bottom surface of the column 18 of the cap and the upper surface of the openable area 8.
In the above-described mounting method, the ridge formed on the bottom surface of the flange portion 5 of the frame 3 can be heated by the micro frame. In addition, as the welding method, an adhesive such as hot melt, an induction heating seal or the like when an aluminum foil of a laminate film in an openable area is laminated may be used.
[0020]
FIG. 3 shows an external view of a part of the packaging container 2 according to one embodiment of the present invention. A frame (not shown) forming a spout, a removable cap 13 attached to the frame to close the spout, and a cap housed inside the frame and associated with the opening movement of the cap; A packaging container for fluidized foods 2 having an openable area to which a closable opening device 4 including a movable ring moving in the opposite direction is mounted. After the frame is welded, the cap 13 is put on and the screws are tightened. After tightening the cap, tamper-proof means 14 can be provided to engage the cap with the frame.
[0021]
An opening mechanism according to an embodiment of the present invention will be described with reference to FIG. 1 which is a sectional view of the opening device 4 and FIG. 2 which is a bottom view.
As shown in FIG. 1, when opening the container, when the cap 13 is moved in the opening direction to open the container 2, first, the joint zone between the bottom surface of the columnar body 18 of the cap 13 and the upper surface of the openable area 1 is formed. Since it is joined at B, a small breakage of the openable area occurs at the joining zone B with a large force due to its small size. At the same time, the movable ring 6 moves downward in the opposite direction to the cap in conjunction with the movement. This is because a stopper is provided to prevent the movable ring 6 from rotating together with the cap 13 by being moved downward by the left-hand thread of the cylindrical portion 19 provided inside the cap 13.
The lower end of the movable ring 15 pushes the plurality of claw pieces 16, rotates about the hinge 7 of the spout, and opens downward from the center of the plurality of claw pieces. The force concentrates on the central portion B (that is, a small break hole) of the openable area, and the break can be easily enlarged with a small force, and thereafter, the break area can be easily enlarged. Since the material in the openable area that has been broken is connected to the container wall on the side opposite to the broken area, it does not fall into the container. Similarly, the air gap in the cross section of the vessel wall is also maintained, so that the liquid content does not permeate the cross section of the container after opening. The movable ring is locked by engagement with the claw pieces, does not return, and is also fixed to the claw pieces to secure an opening area of the spout.
[0022]
FIG. 2 shows the bottom surface of the frame 3 according to one embodiment of the present invention.
The frame 3 is divided into a flange portion 5, a tubular spout (not shown), and a plurality of claw pieces 16 connected to the spout via a hinge 7, and is pushed downward by a movable ring at the time of opening. And is formed integrally by injection molding or the like.
[0023]
【The invention's effect】
As described above, according to the present invention, even in a region where the laminate can be opened, the whole is cut without delamination of the laminate, and a part thereof does not remain on the container side, or the cut (rupture) surface has a thread-like shape. The liquid content can be prevented from penetrating into the cross section of the vessel wall without leaving any residue.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an opening device according to an embodiment of the present invention. FIG. 2 is a bottom view of a frame 3 according to an embodiment of the present invention. FIG. Figure [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Opening possible area 2 ... Packaging container 3 ... Frame 4 ... Opening device

Claims (7)

For a liquid food packaging container having an openable area, a frame forming a spout, a removable cap attached to the frame to close the spout, and the cap housed inside the frame A movable ring that moves downward in conjunction with the opening upward movement of the closable opening device,
It consists of a flange part, a cylindrical spout, and a central plate part which is divided into a plurality of claw pieces connected to the spout through a hinge and pushed downward by a movable ring at the time of opening, and is integrally molded. Preparing the frame to be performed,
Mounting the cap having a columnar body hanging down from the bottom center on the frame that houses the movable ring;
Forming at least one joining zone between a bottom surface of a flange portion of the frame and a peripheral surface of the openable area so as to join the frame to the packaging container around the openable area; Forming a junction zone between the bottom surface of the column of the cap and the top surface of the openable area,
A method for mounting an opening device, comprising: 2. The joint zone according to claim 1, wherein at least one ridge is formed on a bottom surface of the flange portion of the frame and / or a bottom surface of the columnar body of the cap, and the ridge is heat-sealed to form a bonding zone. 3. Mounting method. The mounting method according to claim 1, wherein an adhesive is linearly applied to a bottom surface of the flange portion of the frame and / or a bottom surface of the columnar body of the cap to form a joint zone. The mounting method according to claim 1, wherein the openable area is formed of a laminate film including at least one barrier layer of an oxygen barrier material, and a plurality of weakening lines are formed radially from the center of the breaking start point. The mounting method according to claim 2, wherein the ridges formed on the bottom surface of the flange portion of the frame and / or the bottom surface of the columnar body of the cap are heated by a micro frame. 2. The openable area according to claim 1, wherein the openable area is a part of the container wall of the packaging container, is defined by a line of weakness, and a plurality of lines of weakness are radially formed from the center of the breaking start point. 3. Mounting method. A frame that forms a spout, a removable cap that is attached to the frame to close the spout, and a movable housing that is housed inside the frame and moves downward in conjunction with the opening movement of the cap. A liquid food packaging container having an openable area, having a closable opening device including a ring attached thereto,
The frame is divided into a flange portion, a cylindrical spout having a thread formed on an outer peripheral surface thereof, and a plurality of claw pieces connected to the spout and a hinge via a hinge. Consists of a central plate that can be expanded,
The cap having a columnar body hanging down from the bottom center is attached to the frame containing the movable ring,
At least one joining zone is formed between the bottom surface of the flange portion of the frame and the peripheral surface of the openable area so as to join the frame to the packaging container around the openable area, A packaging container, wherein a joining zone is formed between a bottom surface of a columnar body of a cap and an upper surface of the openable area.

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