JP2003170507A - Method for manufacturing packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the structure of a packaging container manufacturing apparatus, and to reduce the cost of a packaging container. <P>SOLUTION: This method for manufacturing the packaging container has a cap attaching process for attaching a cap to a packaging material before molded at a predetermined position, a molding process for molding the packaging material having the cap attached thereto into a predetermined shape and a filling process for filling the packaging material after molded with liquid food. In this case, since the cap is preliminarily attached to the packaging material, it is unnecessary to attach the cap to a container body 12 after the container body 12 is positioned. That is, since there is no necessity for stopping the container body 12 on a conveyor or once taking out the container body 12 from the conveyor and attaching the cap thereto before again setting the container body 12 to the conveyor, the structure of the packaging container manufacturing apparatus can be simplified. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method of manufacturing a packaging container.

[0002]

2. Description of the Related Art Conventionally, as a packaging container for containing liquid food such as milk and soft drinks, a container body provided with an openable and closable cap is provided so that liquid food can be repeatedly dispensed. ing. In this case, a filling container and a cap attaching device are arranged in the packaging container manufacturing device, the packaging material is molded in the filling device to form the container body, and the container body is filled with liquid food. . After that, the container body is conveyed by a conveyor and sent to the cap attaching device, where the cap is attached to the container body by various attaching methods such as a hot melt method, a heat sealing method, and an ultrasonic sealing method. .

[0003]

However, in the above-mentioned conventional cap attaching device, the cap is attached to the container body sent by the conveyor, so that the cap is accurately placed at a predetermined position of the container body. The container body must be positioned for mounting.

That is, it is necessary to stop the container body on the conveyor, or to take out the container body from the conveyor once (once), attach the cap, and then set the container body on the conveyor again. Variation occurs and the quality of the packaging container deteriorates. Therefore, if it is attempted to prevent variations in the positions where the caps are attached, not only the structure of the packaging container manufacturing apparatus becomes complicated, but also the cost of the packaging container manufacturing apparatus increases.

The present invention can solve the problems of the conventional packaging container manufacturing apparatus, improve the quality of the packaging container, simplify the structure of the packaging container manufacturing apparatus, and reduce the cost. It is an object of the present invention to provide a method for manufacturing a packaging container that can reduce the temperature.

[0006]

Therefore, in the method of manufacturing a packaging container according to the present invention, a cap attaching step of attaching a cap to a predetermined position of a packaging material before molding is performed, and the cap is attached. And a filling step of filling the packaging material after the shaping with a liquid food.

In another method of manufacturing a packaging container of the present invention, the packaging material before the molding is further in a web shape, and the packaging material with the cap attached is molded into a tubular shape. It In still another packaging container manufacturing method of the present invention, the cap further includes a collar portion and a lid (lid) portion, and an open state and a closed state are adopted, and the cap attaching step is performed by using the cap as a packaging material. The step of fixing, the step of placing the cap in an open state, the step of forming a punch hole in the packaging material, the inner tape on the back surface of the packaging material, the pull tab is fused to the surface of the packaging material surrounded by the collar portion, respectively. In addition, it comprises a step of fusing the inner tape and the pull tab to form a fractured part, and a step of fitting the lid part to the collar part.

In still another packaging container manufacturing method of the present invention, the cap further includes a collar portion, and the cap attaching step includes a step of forming punch holes in the packaging material and an inner tape of the packaging material. On the back surface, a pull tab is fused to each surface of the packaging material surrounded by the collar portion, and the inner tape and the pull tab are fused to form a fractured portion.

In still another packaging container manufacturing method of the present invention, a thin portion is formed in advance on the packaging material before the molding, and the cap is provided with a collar portion and a lid portion and is opened. A closed state and a closed state, the cap attaching step includes a step of fixing the cap to the packaging material corresponding to the thin portion, a step of placing the cap in an open state,
The steps include fusing the pull tab to the surface of the packaging material surrounded by the collar portion, and fitting the lid portion to the collar portion.

In still another packaging container manufacturing method of the present invention, further, a thin portion is formed in advance on the packaging material before the molding is performed, the cap is provided with a collar portion, and the cap attaching step is performed. A step of fixing the cap to the packaging material corresponding to the thin portion, and a step of fusing the pull tab to the surface of the packaging material surrounded by the collar portion.

In still another method of manufacturing a packaging container of the present invention, the cap further comprises a drink tab, and the cap attaching step comprises a step of forming a punch hole in the packaging material and an inner tape of the packaging material. On the back side, a drink tab is fused to the surface of the packaging material via the pull tab,
In addition, the step of fusing the inner tape and the pull tab to form a fractured part is included.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a packaging container according to the first embodiment of the present invention. In the figure, 11 is a packaging container, and the packaging container 11 comprises a container body 12 and a cap unit C. Also, 1
Reference numeral 3 denotes a top wall of the container body 12, and the cap unit C is attached to a cap attachment portion of the top wall 13 by various attachment methods such as a hot melt method, a heat seal method, and an ultrasonic seal method. A punch hole (not shown) is formed in the cap mounting portion of the top wall 13.

The cap unit C comprises a base paper (not shown), a collar portion 15 fixed to the top wall 13 via the base paper, a lid portion 16, a pull tab (not shown) and an inner tape (not shown). The lid portion 16 is fitted to the collar portion 15 via a pull tab. Also,
The pull tab covers the punch hole, and is fusion-bonded to the collar portion 15, the packaging material forming the container body 12 and the inner tape to seal the inside of the container body 12. The collar portion 15 and the lid portion 16 form a cap.

Next, a method of manufacturing the packaging container 11 having the above structure will be described. FIG. 2 is a diagram showing a first step of the method for manufacturing a packaging container according to the first embodiment of the present invention, and FIG. 3 shows a second step of the method for manufacturing a packaging container according to the first embodiment of the present invention. FIG. 1 is a second diagram showing the second step of the method for manufacturing a packaging container according to the first embodiment of the present invention, and FIG. 5 is a diagram showing the packaging container according to the first embodiment of the present invention. The 3rd figure showing the 2nd process of a manufacturing method, Drawing 6 is a top view of a cap sheet in a 1st embodiment of the present invention, and Drawing 7 is a manufacturing method of a packaging container in a 1st embodiment of the present invention. Showing the third step of FIG. 8, FIG. 8 is the first figure showing the fourth step of the method for manufacturing a packaging container according to the first embodiment of the present invention, and FIG. 9 shows the first embodiment of the present invention. 2nd figure which shows the 4th process of the manufacturing method of a packaging container, FIG.
FIG. 11 is a first diagram showing a fifth step of the method for manufacturing a packaging container according to the first embodiment of the present invention, and FIG. 11 shows a fifth step of the method for manufacturing a packaging container according to the first embodiment of the present invention. The 2nd figure shown and Drawing 12 are figures showing the 6th process of the manufacturing method of the packaging container in a 1st embodiment of the present invention.

In FIG. 2, reference numeral 21 is a packaging material and 22 is a fold, and the fold 22 is formed in a predetermined portion of the packaging material 21 corresponding to the shape of the container body 12 (FIG. 1). AR1 is a display field formed at a predetermined position of the packaging material 21, and the display field AR1 displays the product name, raw material name, manufacturing date, etc. defined by the standards, laws and regulations. The packaging material 21 has a multi-layered structure and includes a paper base material (not shown) and a polyethylene resin layer (not shown) coated on both sides of the paper base material. Further, an aluminum foil (foil) may be provided as a gas barrier layer between the paper base material and the polyethylene resin layer, if necessary.

In the first step, the packaging material 21 is transported by a packaging material transporting device (not shown) along a packaging material transporting path (not shown) to a cap attachment station set at a predetermined position on the packaging material transporting path. In the second step, the cap 14 is attached to the packaging material 21 at a predetermined position by the cap attaching device disposed in the cap attaching station as shown in FIGS.

The cap 14 has a rectangular shape and a frame-shaped collar portion 1 having an opening 24 formed in the center thereof.
5 and a lid portion 16 that is selectively fitted into the collar portion 15 and covers the opening 24 with the fitting.
By removing 6 from the collar portion 15, the cap 14 assumes the open state, and by inserting the lid portion 16 into the collar portion 15, the cap 14 assumes the closed state.

Although the collar portion 15 and the lid portion 16 can be separated from each other in the present embodiment, the collar portion 15 and the lid portion 16 are separated from each other.
It is also possible to integrally connect and with a thin resin portion or the like, or to swingably connect with a hinge or the like. Then, as shown in FIG. 6, the cap 14 is fused to the web-shaped base paper 23 and sent to the cap mounting station as the cap sheet 25. When the cap sheet 25 is fed, the cap attaching device separates and holds each cap 14, and as shown in FIG. Press against.

The base paper 23 is formed by coating a polyethylene resin layer on both sides of an aluminum layer and has a three-layer structure. Then, by driving the induction heating device of the cap attaching device to induction-heat the aluminum layer to melt each polyethylene resin layer, and to fuse each polyethylene resin layer to the collar portion 15 and the packaging material 21, 14 can be attached to the packaging material 21.

Next, in a third step, the cap 14 is placed in an open state by driving a picking device (not shown) to remove the lid portion 16 to expose the opening 24 as shown in FIG. In step 4, the punching device (not shown) is driven to punch the packaging material 21 and the base paper 23, and punch holes 27 are formed in the packaging material 21 and the base paper 23 as shown in FIGS. 8 and 9. To do. In the cap in which the lid portion is swingably arranged by a hinge or the like, the lid portion is rotated and opened in the third step.

Then, in a fifth step, a pull tab fusing device (not shown) is driven, and as shown in FIGS. 10 and 11, the inner tape 31 is fused to the back surface of the packaging material 21 so as to cover the punch holes 27. And pull tab 17
Is fused to the surface of the packaging material 21 surrounded by the collar portion 15, and the inner tape 31 and the pull tab 17 are fused to each other. As a result, the punch hole 2
7, the inner tape 31 and the pull tab 1
A thin film-shaped break 33 is formed. The pull tab 17 is formed by covering both sides of the aluminum layer with a polyethylene resin layer and has a three-layer structure.

Next, in the sixth step, the picking device is driven again, and as shown in FIG. 12, the lid portion 16 is pressed against the breaking portion 33 in the arrow direction and fitted into the collar portion 15. In the cap in which the lid portion is swingably arranged by a hinge or the like, the lid portion is rotated, fitted and closed in the sixth step.

In this way, the cap unit C is formed, and the attachment of the cap 14 to the packaging material 21 is completed. The cap attaching step is constituted by the second to sixth steps. Subsequently, the packaging material 21 is sent to a filling machine (not shown), and is molded into a predetermined shape, for example, a tubular shape in a molding step in the filling machine, and then, in the filling step, liquid is applied to the tubular packaging material 21. Food is filled. Then, the tubular packaging material 21 is cut at a predetermined distance and is further molded into a pillow (pillow) -shaped prototype container, which is further molded into the brick-shaped packaging container 11.

As described above, since the cap 14 is attached to the packaging material 21 in advance, it is not necessary to attach the cap 14 to the container body 12 after positioning the container body 12. That is, the container body 12 is stopped on a conveyor (not shown), or the container body 12 is removed from the conveyor.
Since it is not necessary to take out the container once and attach the cap 14 and then set the container body 12 on the conveyor again, it is possible to prevent variations in the position where the cap 14 is attached, and improve the quality of the packaging container 11. Can be made. Further, not only can the structure of the packaging container manufacturing apparatus be simplified, but the cost can be reduced.

In this embodiment, since the cap 14 has the collar portion 15 and the lid portion 16, the lid portion 1
6 can be removed from the collar portion 15 or the collar portion 1
The cap 14 can be placed in an open state or a closed state by fitting the cap 14 into the container body 5. However, when a cap having no lid portion 16 is attached to the container body 12, , Third step and sixth
No steps are required.

Further, in the present embodiment, the web-shaped packaging material 21 is used to form the brick-shaped packaging container 11, but the sheet-shaped packaging material is used,
It is also possible to form a gable-top type packaging container.
Next, a second embodiment of the present invention will be described. In addition, about the thing which has the same structure as 1st Embodiment, the description is abbreviate | omitted by giving the same code | symbol.

FIG. 13 is a diagram showing a method of manufacturing a packaging container according to the second embodiment of the present invention. First, in the first step, the packaging material 21 is transported by a packaging material transporting device (not shown) along a packaging material transporting path (not shown), and is sent to a cap mounting station set at a predetermined position on the packaging material transporting path. In the second step, the cap 14 is attached to the packaging material 21 by the cap attaching device arranged at the cap attaching station.

In this case, a base paper having no aluminum layer is used as the base paper, and the cap 14 is used as the packaging material 21.
The base paper is removed from the cap 14 when it is mounted on. Then, the sealing tape 35 is used,
The sealing tape 35 is formed by coating a polyethylene resin layer on both sides of an aluminum layer and has a three-layer structure.

Therefore, when the cap sheet 25 (FIG. 6) is sent, the cap attaching device separates and holds each cap 14, and the sealing tape 35 is placed between the cap 14 and the packaging material 21. Then, the cap 14 is attached to the packaging material 21 via the sealing tape 35.
For that purpose, the induction heating device of the cap attaching device is driven to induction-heat the aluminum layer to melt each polyethylene resin layer of the sealing tape 35, and melt each polyethylene resin layer to the collar portion 15 and the packaging material 21. To wear.
In addition, 16 is a lid part.

Since the third and subsequent steps are the same as those in the first embodiment, the description thereof will be omitted. Note that the cap attaching step is constituted by the second to sixth steps. Next, a third embodiment of the present invention will be described. In addition, about the thing which has the same structure as 1st Embodiment, the description is abbreviate | omitted by giving the same code | symbol.

FIG. 14 is a diagram showing a first step of the method of manufacturing a packaging container according to the third embodiment of the present invention, and FIG. 15 is a second method of manufacturing a packaging container according to the third embodiment of the present invention. FIG. 16 is a diagram showing a step, FIG. 16 is a diagram showing a third step of the method for manufacturing a packaging container according to the third embodiment of the present invention, FIG.
7 is a diagram showing a fourth step of the method for producing a packaging container according to the third embodiment of the present invention, and FIG. 18 is a diagram showing a fifth step of the method for producing a packaging container according to the third embodiment of the present invention. Is.

In this case, at the stage of manufacturing the packaging material 21,
As shown in FIG. 14, the thin portion 49 is formed on the packaging material 21 in advance. The packaging material 21 has a multilayer structure,
It comprises a paper base material 43 and polyethylene resin layers 45 and 46 coated on both sides of the paper base material 43. In addition, an aluminum foil (not shown) is provided as a gas barrier layer between the paper base material 43 and the polyethylene resin layer 46, if necessary. Then, punch holes 4 are formed at predetermined positions on the paper base material 43.
After forming 8, the polyethylene resin layers 45 and 46 are coated on both sides of the paper base material 43, and the polyethylene resin layers 45 and 46 are fused to each other at the punch holes 48 to form the thin portion 49. You can

In the first step, the packaging material 21 is transported by a packaging material transporting device (not shown) along a packaging material transporting path (not shown) to a cap attachment station set at a predetermined position on the packaging material transporting path. In the second step, the cap attachment device provided in the cap attachment station attaches the cap 14 to the packaging material 21 as shown in FIG.

In this case, the cap 14 is attached so as to correspond to the position of the thin portion 49. Therefore, a positioning mark (not shown) is printed at a predetermined position on the surface of the packaging material 21, and the cap 14 can be easily positioned with respect to the packaging material 21 by reading the mark with a sensor (not shown). . Similar to the first embodiment, the cap 14 is fused to the web-shaped base paper 23 to form the cap sheet 25.
(FIG. 6) is sent to the cap mounting station.

Next, in a third step, a picking device (not shown) is driven to remove the lid portion 16,
As shown in FIG. 17, the opening 24 is exposed, and in the fourth step, a pull-tab fusing apparatus (not shown) is driven to move the pull-tab fusing apparatus (not shown).
As shown in FIG. 5, the pull tab 51 is fused to the base paper 23, and the base paper 23 and the thin portion 49 are fused to each other. As a result, a thin film-shaped broken portion 52 including the base paper 23, the polyethylene resin layers 45 and 46, and the pull tab 51 is formed at a portion corresponding to the punch hole 48. In the cap in which the lid portion is swingably arranged by a hinge or the like, the lid portion is rotated and opened in the third step. The pull tab 51 is
It is formed by coating a polyethylene resin layer on both sides of the aluminum layer, has a three-layer structure, and is fused to the base paper 23 by induction heating.

Next, in the fifth step, the picking device is driven again, and as shown in FIG. 18, the lid portion 16 is pressed against the breaking portion 52 in the direction of the arrow and fitted into the collar portion 15. Note that the cap mounting step is constituted by the second to fifth steps. In this embodiment, the cap 14 includes the collar portion 15 and the lid portion 16.
Since the lid portion 16 is detached from the collar portion 15 or fitted into the collar portion 15, the cap 14 can be placed in the open state or the closed state. But the lid part 1
When the cap not including 6 is attached to the container body 12, the third step and the fifth step are unnecessary.

In this way, when the cap unit C (FIG. 1) is formed and the attachment of the cap 14 to the packaging material 21 is completed, the packaging material 21 is sent to a filling machine (not shown) and molded in the filling machine. Then, the liquid food is filled to form the packaging container 11. In this case, since the cap 14 is attached to the packaging material 21 in advance, it is not necessary to attach the cap 14 to the container body 12 after positioning the container body 12.

That is, it is not necessary to stop the container body 12 on a conveyor (not shown), or to take out the container body 12 from the conveyor once, attach the cap 14 and then set the container body 12 on the conveyor again. It is possible to prevent variations in the position where the 14 is attached, and improve the quality of the packaging container 11. Further, not only can the structure of the packaging container manufacturing apparatus be simplified, but the cost can be reduced.

Moreover, since the punch hole 48 and the thin portion 49 are formed in advance in the stage of manufacturing the packaging material 21, it is not necessary to form the punch hole after the third step. Therefore,
The work can be simplified. Moreover, since the punching holes are not formed in the packaging material 21 immediately before the liquid food is filled, it is possible to suppress the occurrence of pinholes in the packaging material 21.

Next, a fourth embodiment of the present invention will be described. In addition, about the thing which has the same structure as 1st Embodiment, the description is abbreviate | omitted by giving the same code | symbol. FIG. 19 is a diagram showing a first step of the method for manufacturing a packaging container according to the fourth embodiment of the present invention, and FIG.
FIG. 21 is a first diagram showing a second step of the method for manufacturing a packaging container according to the fourth embodiment of the present invention, and FIG. 21 is a second step of the method for manufacturing a packaging container according to the fourth embodiment of the present invention. 22 is a third diagram showing the second step of the method for manufacturing a packaging container according to the fourth embodiment of the present invention.

In this case, the cap consists of a "U" shaped drink tab 63. Then, in the first step, a punching device (not shown) is driven to punch the packaging material 21, and punch holes 61 are formed as shown in FIG. Then, in a second step, as shown in FIG. 20, an inner tape 62 is fused to the back surface of the packaging material 21 to cover the punch holes 61 and, as shown in FIGS. At the same time that 64 is fused to the surface of the packaging material 21 covering the punch holes 61, the drink tab 63 is fused to the surface of the packaging material 21 via the pull tab 64 at the same time. In this case, the pull tab 64 is formed by coating a polyethylene resin layer on both sides of the aluminum layer and has a three-layer structure, and the drink tab 6 is formed by induction heating.
3, fused to the packaging material 21 and the inner tape 62. As a result, a fractured portion 68 including the inner tape 62 and the pull tab 64 is formed.

In the pull tab 64, the portion AR3 other than the portion AR2 fused to the drink tab 63, the packaging material 21, and the inner tape 62 is not fused to the packaging material 21.
Further, a notch 65 is formed between the portions AR2 and AR3. The cap attaching step is constituted by the first step and the second step. In this case, if the portion AR3 is picked up with a finger and the pull tab 64 is peeled off,
The breaking portion 68 can be broken to form a spout (not shown).

In each of the above embodiments, the collar portion 15 is fixed to the packaging material 21 before the liquid food is filled,
Moreover, the pull tabs 17, 51, 64 are fused, but by fixing the collar portion 15 to the packaging material 21 before the liquid food is filled, variations occur in the position where the cap is attached. Since it can be prevented, the pull tab can be fused after the liquid food is filled.

The present invention is not limited to the above-mentioned embodiments, but can be variously modified within the scope of the present invention, and they are not excluded from the scope of the present invention.

[0045]

As described in detail above, according to the present invention, in the method of manufacturing a packaging container, a cap attaching step for attaching a cap to a predetermined position of a packaging material before molding is performed, The method includes a forming step of forming the packaging material having the cap attached thereto into a predetermined shape, and a filling step of filling the packaging material after the forming with the liquid food.

In this case, since the cap is attached to the packaging material in advance, it is not necessary to attach the cap to the container body after positioning the container body. In other words, it is not necessary to stop the container body on the conveyor, or to take out the container body from the conveyor once, attach the cap, and then set the container body again on the conveyor. It can be prevented and the quality of the packaging container can be improved. Moreover, not only can the structure of the packaging container manufacturing apparatus be simplified, but the cost can be reduced.

In still another packaging container manufacturing method of the present invention, a thin portion is formed in advance on the packaging material before the molding, and the cap is provided with a collar portion and a lid portion and is opened. A closed state and a closed state, the cap attaching step includes a step of fixing the cap to the packaging material corresponding to the thin portion, a step of placing the cap in an open state,
The steps include fusing the pull tab to the surface of the packaging material surrounded by the collar portion, and fitting the lid portion to the collar portion.

In this case, since no punch hole is formed in the packaging material immediately before the liquid food is filled, it is possible to suppress the occurrence of pinholes in the packaging material.

[Brief description of drawings]

FIG. 1 is a perspective view of a packaging container according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a first step of the method for manufacturing the packaging container according to the first embodiment of the present invention.

FIG. 3 is a first diagram showing a second step of the method of manufacturing the packaging container according to the first embodiment of the present invention.

FIG. 4 is a second diagram showing a second step of the method of manufacturing the packaging container according to the first embodiment of the present invention.

FIG. 5 is a third diagram showing a second step of the method of manufacturing the packaging container according to the first embodiment of the present invention.

FIG. 6 is a plan view of a cap sheet according to the first embodiment of the present invention.

FIG. 7 is a diagram showing a third step of the method for manufacturing the packaging container according to the first embodiment of the present invention.

FIG. 8 is a first diagram showing a fourth step of the method for manufacturing the packaging container according to the first embodiment of the present invention.

FIG. 9 is a second diagram showing a fourth step of the method for manufacturing the packaging container according to the first embodiment of the present invention.

FIG. 10 is a first diagram showing a fifth step of the method for manufacturing the packaging container according to the first embodiment of the present invention.

FIG. 11 is a second diagram showing a fifth step of the method of manufacturing the packaging container according to the first embodiment of the present invention.

FIG. 12 is a diagram showing a sixth step of the method for manufacturing the packaging container according to the first embodiment of the present invention.

FIG. 13 is a diagram showing a method of manufacturing the packaging container according to the second embodiment of the present invention.

FIG. 14 is a diagram showing a first step of a method of manufacturing a packaging container according to the third embodiment of the present invention.

FIG. 15 is a diagram showing a second step of the method of manufacturing the packaging container according to the third embodiment of the present invention.

FIG. 16 is a diagram showing a third step of the method of manufacturing the packaging container according to the third embodiment of the present invention.

FIG. 17 is a diagram showing a fourth step of the method of manufacturing the packaging container according to the third embodiment of the present invention.

FIG. 18 is a diagram showing a fifth step of the method of manufacturing the packaging container according to the third embodiment of the present invention.

FIG. 19 is a diagram showing a first step of the method of manufacturing the packaging container according to the fourth embodiment of the present invention.

FIG. 20 is a first diagram showing a second step of the method for manufacturing the packaging container in the fourth embodiment of the present invention.

FIG. 21 is a second diagram showing a second step of the method of manufacturing the packaging container according to the fourth embodiment of the present invention.

FIG. 22 is a third diagram showing a second step of the method of manufacturing the packaging container according to the fourth embodiment of the present invention.

[Explanation of symbols]

11 packaging containers 14 cap 15 color parts 16 Lid part 17, 51, 64 pull tab 21 Packaging material 23 Base paper 27, 48, 61 punch holes 31,62 Inner tape 33, 52, 68 fracture 49 Thin part 63 Drink tab

Claims (7)

[Claims] 1. A cap attaching step of attaching a cap to a predetermined position of a packaging material before (a) molding.
(B) a forming step of forming the packaging material having the cap attached thereto into a predetermined shape; and (c) a filling step of filling the packaging material after the forming with a liquid food. A method for manufacturing a packaging container, comprising: 2. The packaging material according to claim 1, wherein (a) the packaging material before the molding is web-shaped, and (b) the packaging material with the cap attached is molded into a tubular shape. Packaging container manufacturing method. 3. (a) The cap includes a collar portion and a lid portion, and is in an open state and a closed state. (B) The cap attaching step is a step of fixing the cap to a packaging material, and an open state of the cap. A step of forming a punch hole in the packaging material, an inner tape on the back surface of the packaging material, a pull tab on the front surface of the packaging material surrounded by the collar portion, and the inner tape and the pull tab. 3. The method for manufacturing a packaging container according to claim 1, further comprising a step of fusing and forming a ruptured portion, and a step of fitting the lid portion to the collar portion. 4. (a) The cap includes a collar portion, and (b) the cap attaching step includes forming a punch hole in the packaging material, and an inner tape on the back surface of the packaging material, and a pull tab on the collar portion. 4. A step of fusion-bonding to the surface of each packaging material surrounded by, and fusion-bonding the inner tape and the pull tab to form a fractured portion.
The method for manufacturing the packaging container according to any one of 1. 5. (a) A thin portion is formed in advance on the packaging material before the molding is performed, and (b) the cap includes a collar portion and a lid portion, and takes an open state and a closed state, c) The step of attaching the cap, the step of fixing the cap to the packaging material corresponding to the thin portion, the step of placing the cap in an open state, and the step of fusing the pull tab to the surface of the packaging material surrounded by the collar portion. And a method of manufacturing the packaging container according to any one of claims 1 to 4, which comprises a step of fitting the lid portion to the collar portion. 6. (a) A thin portion is formed in advance on the packaging material before the molding is performed, (b) the cap is provided with a collar portion, and (c) in the cap attaching step, the cap is formed into the thin portion. The manufacturing of the packaging container according to any one of claims 1 to 5, comprising a step of fixing the pull tab to the packaging material corresponding to a portion, and a step of fusing the pull tab to the surface of the packaging material surrounded by the collar portion. Method. 7. (a) The cap comprises a drink tab, and (b) the cap attaching step comprises a step of forming punch holes in the packaging material, and an inner tape on the back surface of the packaging material, a drink tab and a pull tab. 7. The packaging container according to any one of claims 1 to 6, which comprises a step of fusing the inner tape and the pull tab by fusing to each other on the surface of the packaging material via Production method.