JP2004210298A - Method for fitting 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 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 comprises a frame forming an outlet, a cap fitted on the frame, and a movable ring housed in the frame and moved in reverse to the cap, and the fitting method for the opening device and the packaging container using the same are provided. The frame comprises a flange, the cylindrical outlet, and a central board, which is divided into a plurality of nails connected to the outlet via hinges and is depressed to be widened by the movable ring upon opening the cap. A joining zone is formed between the bottom of the flange and the peripheral surface of the openable area so that the frame is joined to the packaging container at the periphery 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 opening devices substantially include a spout frame attached to a hole, punch, or severable portion of the vessel wall that forms the 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 (referred to as a prelaminated hole, PLH) and a packaging container equipped with the opening device are, for example, special features. It is described in JP 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, an invention of a method of mounting an opening device and an invention of a packaging container are provided for a packaging container for a liquid food having an openable area, a frame forming a spout, and a method for closing the spout. A method of mounting a closable opening device including a removable cap attached to a frame, and a movable ring housed inside the frame and moving downward in the opposite direction to the cap in conjunction with the opening movement of the cap and the method thereof A packaging container, comprising a flange portion, a tubular spout portion, and a central plate portion which is divided into a plurality of claw pieces connected to the spout portion via a hinge and is pushed downward by a movable ring at the time of opening. Preparing a frame that is integrally formed, and bonding the frame to the packaging container around the openable area, so that the bottom of the flange portion of the frame is formed. And forming at least one bonding band between said peripheral surface of the openable area.
[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 downward 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
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;
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 A closable opening device is attached to the packaging container. The opening device includes a frame that forms a spout, a removable cap that is attached to the frame to close the spout, and a cap that is housed inside the frame and interlocks with the opening movement of the cap. And a movable ring that moves in the opposite direction. When opening the container, when the cap is moved in the opening direction to open the container, the movable ring moves 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 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, 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 surfaces of the flange portions of the frame, and the ridges are heat-sealed to form a joining 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 a linear adhesive to each of the bottom surfaces of the flange portions of the frame.
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 the fifth aspect of the present invention, the ridge formed on the bottom surface of the flange portion of the frame is heated by a micro frame.
According to the above configuration, the bonding zone can be formed by reliably and easily bringing the bottom surface of the flange portion into contact with the upper surface of the openable area of the packaging container.
[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,
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,
It is characterized by the following.
[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]
In the packaging container invention according to claim 8 of the present invention, the movable ring has a sloped cam on a top surface so as to move downward by a sloped cam provided on a bottom surface of the cap, and the downward movement is completed. At times, it is locked by engagement with a claw piece that has been spread downward through a hinge.
With the above configuration, the following operations are provided. When the cap is moved in the opening direction to open the container, the movable ring moves in the opposite direction to the cap by the cam on the slope on the top surface. 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, the contents liquid 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.
[0018]
Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a cross-sectional view showing one step of a method for attaching 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, A method of mounting a closable opening device 4 including a movable ring 15 which is housed inside a frame and moves in the opposite direction to the cap in conjunction with the opening movement of the cap is shown.
In this step, a central plate which 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 which is pushed downward by a movable ring at the time of opening is opened. A frame composed of a part 8 and integrally formed is prepared and placed on the openable area 1 of the packaging container.
[0019]
In this embodiment, at least one ridge 9 is formed on the bottom surface of the flange portion 5 of the frame 3.
The ridge 9 is heat-sealed to form a bonding zone. When heat is applied to the bottom surface of the surface to be heated, heat energy is concentrated on the ridges and is reliably melted to form a bonding zone. In this case, an annular ridge 9 for welding is provided on the flange bottom surface. The diameter of the outer ridge 9 is larger than the outer diameter of the openable area 1 and is welded to the outer plastic layer of the vessel wall.
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 41 are formed from the center of the breaking start point as shown in FIG. In the packaging container, the openable area where the barrier property may be impaired is protected, and the laminate film in the openable area 1 can be easily broken and pushed.
[0020]
Next, in a step, at least one joint between the bottom surface of the flange portion 5 of the frame and the peripheral surface 11 of the openable area 1 so as to join the frame 3 to the packaging container around the openable area 11. Forming a band,
In the mounting method described above, the ridge 9 formed on the bottom surface of the flange portion 5 of the frame 3 is 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.
[0021]
FIG. 6 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 fluid food packaging container 2 having an openable area to which a closable opening device 4 including a movable ring (not shown) moving in the opposite direction is mounted.
After the frame is welded, the cap 13 is put on and the screws are tightened. When tightening the cap, a tamper-proof means 14 can be provided which engages the cap with the frame.
[0022]
An opening mechanism according to an embodiment of the present invention will be described with reference to FIGS. 2 and 3 which are cross-sectional views of the opening device 4.
As shown in FIG. 2, when the cap 13 is moved in the opening direction to open the openable area 1 of the container, the movable ring 15 is moved in the opposite direction to the cap 13 by the cam 25 on the slope on the top surface. 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. Then, as shown in FIG. 3, the fracture area can be easily enlarged. Since the material 1 in the broken openable area is connected to the container wall on the side opposite to the break, it does not fall into the container. Similarly, since the gap (air gap) 20 in the cross section of the vessel wall is also maintained, the contents liquid does not penetrate into 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.
[0023]
The movable ring 15 according to one embodiment of the present invention will be described with reference to FIG.
The movable ring 15 is housed inside the frame 3 and moves downward in the opposite direction to the cap in conjunction with the opening movement of the cap. The movable ring 15 has a sloped cam 41 on the top surface so as to be moved downward by a sloped cam provided on the bottom surface of the cap, and a claw piece pushed downward via a hinge when the downward movement is completed. Is locked by the engagement of.
[0024]
【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 showing one step of a method of mounting an opening device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the opening device illustrating an opening mechanism according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of an opening device illustrating an opening mechanism according to an embodiment of the present invention; FIG. 4 is a perspective view of a movable ring according to an embodiment of the present invention; FIG. FIG. 6 is an external view of a part of a packaging container according to an embodiment of the present invention.
DESCRIPTION OF SYMBOLS 1 ... Opening possible area 2 ... Packaging container 3 ... Frame 4 ... Opening device

Claims (8)

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 a frame to be
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;
A method for mounting an opening device, comprising: The mounting method according to claim 1, wherein at least one ridge is formed on a bottom surface of the flange portion of the frame, and the ridge is heat-sealed to form a joining zone. The mounting method according to claim 1, wherein an adhesive is linearly applied to a bottom surface of each of the flange portions of the frame to form a bonding 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 from the center of the breaking start point. The mounting method according to claim 2, wherein the ridge formed on the bottom surface of the flange portion of the frame is heated by a micro frame. The attachment 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 formed from the center of the breaking start point. Method. A frame that forms a spout, a removable cap that is attached to the frame to close the spout, and a cap that is housed inside the frame and moves in the opposite direction to the cap in conjunction with the opening movement of the cap. A liquid food packaging container having an openable area, wherein a closable opening device including a movable ring that moves downward is mounted.
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,
At least one joining zone was 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 characterized by the above-mentioned. The movable ring has a sloped cam on a top surface so as to move downward by a sloped cam provided on the bottom surface of the cap, and a claw piece pushed downward through a hinge when the downward movement is completed. The packaging container according to claim 7, wherein the packaging container is locked by engagement of the packaging container.

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