JP2012240689A - Packaging container and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container which can be opened without damaging a nail since a flap sealed to a container bottom surface can be easily lifted with a finger when the packaging container is recycled after being used.SOLUTION: The packaging container is formed by molding a web-like packaging material 1 in a tube shape, charging a beverage, laterally sealing and cutting the packing material into a pillow-like packaging body having fins at both ends, and folding a first fin 23 onto a top surface and a second fin 23 onto a bottom surface, and the flap 25 onto the bottom surface etc., and then fixing them, and has a pull tab 30 for flap comprising a sheet-like body 31 provided between the second fin 23 and bottom surface and a grip part 32 protruding from an end of the second fin 23.

Description

The present invention relates to a packaging container filled with milk, juice, alcoholic beverage, mineral water, green tea and the like, and a method for producing the same.

Flexible packaging laminates have been used for many years to package liquid foods. A packaging container 20 as shown in FIG. 4 for milk, juice, sake, shochu, mineral water and other beverages, for example, creased in a fibrous base material (eg, paper, etc.) / Plastic laminate. The web-like packaging laminate material is formed into a tube shape by a longitudinal line seal in the longitudinal direction, the filling material is filled in the tube-shaped packaging material, and the tube-like packaging material is transversely sealed in the transverse direction. Molded into a cushion-shaped or pillow-shaped package (primary shape container).

Panels 21a, 21b that form side walls as shown in FIG. 4 by cutting a pillow-shaped package into one container at a horizontal seal portion and folding it into a mountain fold or a valley fold along the fold line. Vertical line seal portion 22, fin horizontal seal portion 23, panel 24 forming top wall, side wall 21b, and flap welded to bottom wall (not shown in FIG. 4) (occurred when forming top wall or bottom portion) A brick-like container 20 composed of the folding pieces 25 is formed.

FIG. 6 is a perspective view showing each step of forming a brick container from a pillow-shaped package. FIG. 6C is a perspective view of the container bottom as viewed from below the container 20.
In the step in this aspect, a pillow-shaped package (primary shape container) is formed (see FIG. 6A). This package includes panels 21a and 21b that form side walls, lateral seal portions (fins) 23, a panel 24 that forms a top wall, a panel 26 that forms a bottom wall, and flaps (folds that occur when the top and bottom portions are formed). The panel 25 etc. which form a piece).

It folds into a mountain fold or a valley fold along the fold line and presses to form a top portion and a bottom portion (see FIG. 6B). In this step, the folded piece flaps 25 that occur during the formation of the top / bottom project laterally from the top and bottom, and the fins 23 of the lateral seals extend from the top wall 24 (not shown) and the bottom wall 26. Stand upright.
In the final step, the fins 23 of the lateral seal portion are brought down by the top wall 24 (not shown) and the bottom wall 26 and come into contact with the surfaces of the top wall 24 (not shown) and the bottom wall 26. Next, the flaps 25 of the top / bottom folding pieces are folded on the surface of the side wall 21b and the surface of the bottom wall 26, respectively, and fixed by, for example, heat sealing or adhesive (see FIG. 6C). ).

When the container containing the beverage or the like manufactured by the above method is discarded after drinking the beverage or the like, the flap and the fin are peeled off in a step reverse to the forming step shown in FIG. Folded and discarded.
For consumers to easily recycle by hand, when the container is folded and flattened and discarded, when the flap sealed at the bottom is peeled off, the tip is firmly attached to the container bottom surface. . Therefore, when it is necessary to pull up the sealed flap with a finger, the nail is sometimes burdened and the nail may be damaged. Also, if it is difficult to pull up the sealed flap, sometimes it is abandoned and the container may be discarded without being folded completely flat and used for recycling work. Containers are difficult to keep in order and may interfere with recycling work.

On the other hand, in the center of the bottom seal flap of the container, incisions are provided from the cut portion at two positions corresponding to the front end portion folded on the bottom surface, and the front end portion of the bottom seal flap is inserted into the notch. Thus, a container has been proposed in which a bottom surface is formed by sandwiching each other and the bottom seal flap can be easily peeled off. (See patent literature)

JP 2002-225845 A

In the container proposed above, in the container where the cut is provided from the cut portion at the center of the seal flap at two positions corresponding to the tip portion folded on the bottom surface, the horizontal seal portion is weakened by the cut and the seal of the container is May reduce reliability.
An object of the present invention is to provide a packaging container that can easily lift up the flap sealed on the bottom of the container with a finger when the packaging container is recycled after use without opening the side seal portion, and can be opened without damaging the nails. It is to be.

Another object of the present invention is to provide a method by which a container from which the bottom seal flap can be easily peeled can be produced simply and without requiring complicated additional steps.

The packaging container of the present invention is a web-shaped packaging material with a crease line formed into a tube shape by a longitudinal line seal in the longitudinal direction, and the filling material is filled in the tube-shaped packaging material, The tubular packaging material is laterally sealed in the transverse direction, cut at the lateral seal portion, formed into a pillow-shaped packaging body having fins at both ends of the lateral seal portion, folded along the crease line, and the first fin is A packaging container obtained by folding to the top surface, folding the second fin to the bottom surface, and folding the flaps of the folded pieces generated when forming the top and bottom portions of the container, respectively, by folding them to the side wall and bottom surface of the container,
A flap-shaped pull tab comprising a sheet-like main body provided between the second fin and the bottom surface, and a gripping portion integrated with the main body and protruding from at least one end of the second fin;
It is characterized by that.

In a preferred aspect of the present invention, the gripping part is an extended seal piece from the sheet-like main body.

In a preferred embodiment of the present invention, the grip portion is a ring integrated with the sheet-like main body.

In a preferred aspect of the present invention, the grip portion is subjected to a non-slip treatment.

The manufacturing method of the packaging container of the present invention is as follows:
(A) A web-shaped packaging material with a crease line is formed into a tube shape by a longitudinal line seal in the longitudinal direction, and the filling material is filled into the tube-shaped packaging material, and the tube-shaped packaging material Is transversely sealed in the transverse direction and cut at the lateral seal portion, and formed into a pillow-shaped package having fins at both ends of the lateral seal portion,
(B) Fold along the fold line and fold the first fin to the top surface,
(C) A sheet-like main body of a flap pull tab is provided on the surface or the bottom surface of the second fin, and the second fin is folded to the bottom surface.
(D) Folding the first and second flaps of the folded pieces that are generated when forming the top and bottom of the container and projecting laterally from the top and bottom to the side wall and the bottom of the container, respectively, Projecting the grip portion of the integrated flap pull tab from at least one end of the second fin;
(E) The first and second flaps are fixed to the side wall and the bottom surface of the container, respectively, to obtain a packaging container.
It is characterized by that.

In a preferred embodiment of the present invention, the sheet-like main body is temporarily bonded to the surface of the second fin or the bottom surface by spot welding or the like.

According to the present invention having the above configuration, the following functions are exhibited and advantageous effects are obtained.
The packaging container of the present invention is a web-shaped packaging material with a crease line formed into a tube shape by a longitudinal line seal in the longitudinal direction, and the filling material is filled in the tube-shaped packaging material, The tubular packaging material is laterally sealed in the transverse direction, cut at the lateral seal portion, formed into a pillow-shaped packaging body having fins at both ends of the lateral seal portion, folded along the crease line, and the first fin is It is a packaging container obtained by folding on the top surface, folding the second fin on the bottom surface, and folding the flaps of the folded pieces generated when forming the top and bottom portions of the container on the side wall and bottom surface of the container.
When discarding used containers after drinking, the brick-shaped container is transformed into a pillow-shaped package by peeling off the flaps of the folded pieces from the side walls and bottom of the container, and then folded and flattened for disposal. The volume of waste can be greatly reduced, and the recycling work can be facilitated.

In a feature of the present invention, there is provided a flap pull tab including a sheet-like main body provided between the second fin and the bottom surface, and a gripping portion that is integrated with the main body and protrudes from at least one end of the second fin.
The second fin is a part of the flap of the folded piece generated when the bottom portion of the container is formed at both end portions, and overlaps the second fin on the bottom surface. The sheet-like main body of the flap pull tab is bent in close contact with the folding of the second fin. Therefore, the sheet-like main body does not easily separate from between the second fin and the bottom surface.
Since the gripping part of the flap pull tab is integrated with the main body, if the force is applied to lift the gripping part when the movement of the gripping part is reliably transmitted to the sheet-like main body, the peeling force is transferred to the sheet-like main body. Furthermore, the peeling force can be reliably propagated from the sheet-like main body to the flap.
Since the grip portion of the flap pull tab protrudes from at least one end of the second fin, the consumer can reliably peel off the flap by gripping and pulling up the grip portion.

In the aspect in which the gripping portion is an extended seal piece from the sheet-like main body, the entire flap pull tab can be used as a seal piece, and the flap pull tab can be obtained at a low cost.

In a preferred embodiment in which the gripping part is a ring integrated with the sheet-like main body, the ring becomes a locking member that assists in catching fingers, and the consumer can easily grip the gripping part, and the flap can be reliably and easily Can be peeled off.

In a preferred embodiment in which the gripping portion is subjected to anti-slip treatment, the anti-slip of the gripping portion becomes a locking member that assists in catching the finger, so that the consumer can easily hold the gripping portion, It can be easily peeled off.

In the method for manufacturing a packaging container according to the present invention, in step (a), the web-shaped packaging material with a crease line is formed into a tube shape by a longitudinal line seal in the longitudinal direction, and the packaging material is formed into a tube shape. The filling material is filled therein, the tubular packaging material is transversely sealed in the transverse direction, cut at the transverse seal portion, and formed into a pillow-like packaging body having fins of the transverse seal portion at both ends.
The final shape brick-like container can be transformed into a pillow-shaped package, and then folded and flattened for disposal, greatly reducing the volume of waste and facilitating recycling work. it can.
In step (b), the first fin is folded on the top surface by folding along the crease line. By this folding, the top of the container can be formed.

In step (c), the sheet-like main body of the flap pull tab is provided on the bottom surface or the bottom surface of the second fin, and the second fin is folded to the bottom surface. In this step, a sheet-like main body is provided between the second fin and the bottom surface.
For example, the sheet-like body of the flap pull tab is placed on the bottom surface, and the sheet-like body is temporarily fixed with, for example, an adhesive, and temporarily fixed by spot welding with a heat seal or a laser.

In step (d), the first and second flaps of the folded pieces, which are generated when forming the top and bottom of the container and project laterally from the top and bottom, are folded on the side wall and bottom of the container, respectively, The grip portion of the flap pull tab integrated with the main body is protruded from at least one end of the second fin.
The first flap of the folding piece, which occurs when forming the top of the container and protrudes laterally from the top, is folded on the side wall of the container.

Further, the second flap of the folded piece that is generated when forming the bottom of the container and protrudes laterally from the bottom is folded to the bottom of the container, and the gripping portion of the flap pull tab integrated with the sheet-like main body is formed. It protrudes from at least one end of the second fin.
In this step, a flap pull tab comprising a sheet-like main body provided between the second fin and the bottom surface, and a gripping portion integrated with the main body and protruding from at least one end of the second fin is provided.
The second fin is a part of the flap of the folded piece generated when the bottom portion of the container is formed at both end portions, and overlaps the second fin on the bottom surface. The sheet-like main body of the flap pull tab is bent in close contact with the folding of the second fin. Therefore, the sheet-like main body does not easily separate from between the second fin and the bottom surface.
The gripping part of the flap pull tab reliably conveys the movement of the gripping part to the sheet-like main body, and when a force is applied to pull up the gripping part, the peeling force is applied to the sheet-like main body and further from the sheet-like main body to the flap. It is possible to reliably propagate the peeling force.
Since the grip portion of the flap pull tab protrudes from at least one end of the second fin, the consumer can reliably peel off the flap by gripping and pulling up the grip portion.

Finally, in step (e), the packaging container can be obtained by fixing the first and second flaps to the side wall and the bottom surface of the container, respectively.
According to the present invention, since the horizontal seal portion is not cut, the flap sealed on the bottom surface of the packaging container can be easily fingered by the gripping portion of the flap pull tab without recycling the lateral seal portion. A packaging container that can be lifted and opened without damaging the nail can be provided.

Further, according to the present invention, a container capable of easily tearing off the bottom seal flap by simply sandwiching the flap pull tab in the fin folding step can be easily manufactured without requiring a complicated additional step. .
Furthermore, in the aspect in which the flap pull tab is made of a heat resistant material, heat does not damage the flap pull tab when the flap is heat sealed.

It is a perspective appearance figure which shows the formation step of 1st Example of the packaging container by this invention. It is a perspective appearance figure which shows the formation step of 2nd Example of the packaging container by this invention. It is a perspective appearance figure which shows the peeling step of 3rd Example of the packaging container by this invention. It is an external view of a brick-like packaging container. It is the schematic of the filling apparatus which fills / molds a packaging container from a web-like packaging material. It is a perspective view which shows each step which forms a brick-shaped container from a pillow-shaped package.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
This embodiment will be described with reference to an example of a packaging and filling apparatus shown in FIG. In this apparatus example, the web-shaped packaging laminate material 1 is accommodated in a packaging filling apparatus in a reel shape. The packaging laminate material 1 includes a paper base material and a flexible laminate in which polyethylene resin is laminated on both sides of the paper base material, and a conductive layer such as an aluminum foil is formed between the paper base material and the film. The exterior printing is applied to the portion corresponding to the surface of the packaging container.

The drawn-out packaging material 1 is continuously conveyed by a conveying means and is supplied for packaging and filling.
The packaging laminate material 1 is sent to the strip sticking device 3, and the strip is stuck along one edge of the packaging laminate material 1 by the strip sticking device.
The packaging laminated material 1 is sent to the sterilization tank 4 and sterilized with a sterilization liquid such as hydrogen peroxide in the sterilization tank 4. The packaging laminate material 1 is sent to an air knife, dried by the air knife, and then sent to the sterilization chamber 16. The packaging laminate material 1 is gradually deformed by the forming ring 6 to be formed into a tube shape.

Both edges of the packaging laminate material formed into a tube shape are pressed together with the strip by the vertical sealing device 8 to perform vertical sealing. Furthermore, the fluid food supplied through the filling pipe 7 is filled into the tube-shaped packaging laminate material 1.
The tubular packaging laminate material is guided by a roller and laterally sealed by a lateral seal device 10 in the lateral direction, and the laterally sealed packaging laminate material is cut by a knife or the like at the lateral seal portion to form a pillow-shaped packaging body 13. Is done.
The pillow-shaped package 13 is formed into a final shape by the final shape forming device 15 to complete a packaging container 14 that contains the fluid food.

The manufacturing method of the packaging container 20 of the first embodiment will be specifically described with reference to FIG. 1 with reference to FIG. 6 showing the steps formed from the pillow-shaped package 13.
In the molding step (A) shown in FIG. 6, a pillow-shaped package 13 that is preliminarily folded along the fold line is prepared. This package includes panels 21a and 21b that form side walls, lateral seal portions (fins) 23, a panel 24 that forms a top wall, a panel 26 that forms a bottom wall, and flaps (folds that occur when the top and bottom portions are formed). The panel 25 etc. which form a piece).

It folds into a mountain fold or a valley fold along the fold line and presses to form a top portion and a bottom portion (see FIG. 6B). In this step, the folded piece flaps 25 that occur during the formation of the top / bottom project laterally from the top and bottom, and the fins 23 of the lateral seals extend from the top wall 24 (not shown) and the bottom wall 26. Stand upright.
In the final step, the fins 23 of the lateral seal are brought down and come into contact with the surfaces of the top wall 24 (not shown) and the bottom wall 26. Next, the flaps 25 of the top / bottom folding pieces are respectively folded on the surface of the side wall 21b and the surface of the bottom wall 26 and fixed by heat sealing (see FIG. 6C).

As shown in FIG. 1A, in the packaging container 20 of the first embodiment, a sheet-like main body 31 of a flap pull tab 30 is provided on the bottom surface 26 by heat sealing by spot welding. Next, the second fin 23b is folded toward the bottom surface 26 side. In this step, the sheet-like main body 31 is provided between the second fin 23 b and the bottom surface 26.
That is, the sheet-like main body 31 of the flap pull tab is placed on the bottom surface 26, and the sheet-like main body 31 is temporarily fixed by spot welding (not shown) by heat sealing.

A sheet-like body is formed by folding the first flap 25a and the second flap 25b of the folded pieces that are generated when forming the top and bottom of the container and project laterally from the top and bottom to the side wall 21b and the bottom surface 26 of the container, respectively. The grip portion 32 of the flap pull tab 30 integrated with 31 is protruded from one end of the second fin 23b.
As shown in FIG. 1 (b), the first flap 25a of the folded piece that is generated when the top portion of the container is formed and protrudes laterally from the top portion is folded on the side wall 21b of the container.

On the other hand, the second flap 25b of the folded piece that is generated when the bottom portion of the container is formed and protrudes laterally from the bottom portion is folded to the bottom surface 26 of the container, and the flap pull tab integrated with the sheet-like main body 31 is formed. The holding part 32 is protruded from one end of the second fin.
The second fin 23b becomes a part of a flap 25b of a folded piece generated when the bottom portion of the container is formed at both end portions, and overlaps the second fin 23b on the bottom surface as shown in FIG.
The flap-like tabbed sheet-like main body 31 bends in close contact with the folding of the second fins 23b. Therefore, the sheet-like main body 31 is not easily detached from between the second fins 23b and the bottom surface 26.

When the gripping portion 32 of the flap pull tab reliably transmits the movement of the gripping portion 32 to the sheet-like main body 31 and applies a force to pull up the gripping portion 32, the peeling force is further applied to the sheet-like main body 31. The peeling force is reliably propagated from the sheet-like main body 31 to the flap 25b.
Since the grip portion 32 of the flap pull tab protrudes from one end of the second fin 23b as shown in FIG. 1 (b), the consumer grips the grip portion 32 and pulls it up, thereby pulling the flap 25b. Can be reliably peeled off.
Finally, as shown in FIG. 1 (b), the first and second flaps 25a and 25b are fixed to the side wall 21b and the bottom surface 26 of the container, respectively, thereby obtaining a packaging container.

The manufacturing method of the packaging container 20 of 2nd Example is demonstrated concretely with reference to FIG. 2 which shows the step shape | molded from a pillow-shaped package.
As shown in FIG. 2A, in the packaging container 20 of the second embodiment, a sheet-like main body 31 of the flap pull tab 30 is simply provided on the bottom surface 26. Next, the second fin 23 b is folded toward the bottom surface 26, and the sheet-like main body 31 is provided between the second fin 23 b and the bottom surface 26.
That is, the sheet-like body 31 of the flap pull tab is placed on the bottom surface 26 to provide the sheet-like body 31.

A sheet-like body is formed by folding the first flap 25a and the second flap 25b of the folded pieces that are generated when forming the top and bottom of the container and project laterally from the top and bottom to the side wall 21b and the bottom surface 26 of the container, respectively. The ring-shaped grip 32 of the flap pull tab 30 integrated with 31 is projected from both ends of the second fin 23b.
As shown in FIG. 2 (b), the first flap 25a of the folded piece that is generated when the top of the container is formed and protrudes laterally from the top is folded on the side wall 21b of the container.

On the other hand, the second flap 25b of the folded piece that is generated when the bottom portion of the container is formed and protrudes laterally from the bottom portion is folded to the bottom surface 26 of the container, and the flap pull tab integrated with the sheet-like main body 31 is formed. The ring-shaped gripping portion 32 is protruded from both ends of the second fin and abutted so as to overlap as shown in FIG.
The second fin 23b becomes a part of the flap 25b of the folded piece generated when the bottom portion of the container is formed at both end portions, and overlaps the second fin 23b on the bottom surface.
The flap-like tabbed sheet-like main body 31 bends in close contact with the folding of the second fins 23b. Therefore, the sheet-like main body 31 is not easily detached from between the second fins 23b and the bottom surface 26.

The ring-shaped gripping portion 32 of the flap pull tab reliably transmits the movement of the gripping portion 32 to the sheet-like main body 31 and applies a force to pull up the ring 32 of the gripping portion. Furthermore, the peeling force is reliably propagated from the sheet-like main body 31 to the flap 25b.
As shown in FIG. 2 (b), the ring-shaped grip portion 32 of the flap pull tab protrudes from both ends of the second fin 23b, so that the consumer grips and lifts one of the grip portions 32. The flap 25b can be peeled off reliably, and the other gripping portion 32 can be caused in the same manner to similarly peel off the flap 25b.
Finally, as shown in FIG. 2B, the first and second flaps 25a and 25b are fixed to the side wall 21b and the bottom surface 26 of the container, respectively, thereby obtaining a packaging container.

The operation of the packaging container according to the third embodiment will be specifically described with reference to FIG. 3 showing the steps of peeling off the flap.
As shown to Fig.3 (a), in the packaging container of 3rd Example, the sheet-like main body of the pull tab for flaps is provided in the bottom face 26. As shown in FIG. That is, the sheet-like main body is provided between the second fin 23 b and the bottom surface 26.
The sheet-like grip 32 of the flap pull tab integrated with the sheet-like main body protrudes from both ends of the second fin 23b.
When the grip portion 32 of the flap pull tab is pulled up in the direction of the arrow, the movement of the grip portion 32 is reliably transmitted to the sheet-like main body, and the peeling force is reliably transmitted from the sheet-like main body to the flap 25b.
As shown in FIGS. 3A and 3B, the flap pull tab gripping portion 32 protrudes from both ends of the second fin 23b, so that the consumer grips one of the gripping portions 32 and pulls it up. Then, the flap 25b is surely peeled off, and the other gripping portion 32 is similarly caused to peel off the flap 25b in the same manner.
In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

The present invention can be applied to the manufacture of liquid food packaging.

DESCRIPTION OF SYMBOLS 1 Packaging material 21a, 21b Side wall panel 23 Fin 25 Flap 26 Bottom wall panel 30 Pull tab 31 for flap Sheet-like main body 32 Gripping part

Claims (6)

A web-shaped packaging material with a crease line is formed into a tube shape by a longitudinal vertical line seal, the filling material is filled into the tube-shaped packaging material, and the tube-shaped packaging material is crossed. After transverse sealing in the direction and cutting at the lateral sealing part, it is formed into a pillow-like package having fins at both ends of the lateral sealing part, folded along the crease line, and the first fin is folded to the top surface. A packaging container obtained by folding the second fin to the bottom and folding the flaps of the folded pieces generated when forming the top and the bottom of the container to the side wall and the bottom of the container, respectively,
A flap pull tab comprising a sheet-like main body provided between the second fin and the bottom surface, and a gripping portion integrated with the main body and protruding from at least one end of the second fin;
A packaging container characterized by that. The packaging container according to claim 1, wherein the grip portion is an extended seal piece from the sheet-like main body. The packaging container according to claim 1, wherein the grip portion is a ring integrated with the sheet-like main body. The packaging container according to claim 1, wherein the grip portion is subjected to a non-slip treatment. (A) A web-shaped packaging material with a crease line is formed into a tube shape by a longitudinal vertical line seal, and the material to be filled is filled into the packaging material formed into a tube shape. The material is transversely sealed in the transverse direction and cut at the transverse seal portion, and formed into a pillow-shaped package having fins of the transverse seal portion at both ends,
(B) Fold along the fold line and fold the first fin to the top surface;
(C) A sheet-like body of a flap pull tab is provided on the bottom surface or the bottom surface of the second fin, and the second fin is folded to the bottom surface.
(D) Folding the first and second flaps of the folding piece that are generated when forming the top and bottom of the container and project laterally from the top and bottom, respectively, are folded on the side wall and the bottom surface of the container. And projecting the grip portion of the flap pull tab integrated with the sheet-like body from at least one end of the second fin,
(E) fixing the first and second flaps to the side wall and the bottom surface of the container, respectively, to obtain a packaging container;
A method for producing a packaging container. The manufacturing method of the packaging container of Claim 6 with which this sheet-like main body is temporarily adhere | attached by the spot welding etc. to the surface of this 2nd fin, or this bottom face.