JP2001171657A - Manufacturing method for packaging container and the container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method for a pouring outlet guide improving the touch of a mouth of the pouring outlet. SOLUTION: A packaging container is not provided with a lid encircling the pouring outlet but provided with a lid encircling the spout guide 71 fusion bonded on a top wall 37, and the spout is encircled to improve the touch of the mouth of the spout. As the spout guide 71 is formed by directly jetting a molten resin to not only simplify a manufacturing process for the packaging container 29 but also to easily provide various kinds of pouring outlet guides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a packaging container.

[0002]

2. Description of the Related Art Conventionally, liquid foods such as milk, soft drinks, etc.
Generally, it is sold in a packaging container of a brick type, a polyhedral type or the like made of a packaging material. In a packaging container having a capacity that can be completely consumed at one time, a spout is formed in the top wall, and the spout is covered with a pull tab.

FIG. 2 is a perspective view of a conventional packaging container.

In FIG. 1, reference numeral 10 denotes a main body of a packaging container for accommodating liquid food, 12 denotes a top wall of the main body of the packaging container 10, 19 denotes a rear wall of the main body of the packaging container 10, and 20 denotes a side wall of the main body of the packaging container. A spout 21 formed of a punch hole is formed at a spout portion set at a predetermined position on the top wall 12, and the spout 21 is covered by the pull tab 15.
In this case, a person who intends to drink the liquid food, that is, a drinker, can pull the pull tab 15 from the packaging container body 10.
The straw 18 is removed from the bag 16 of the straw 18 stuck on the rear wall 19, and the straw 18 is inserted into the spout 21 to drink liquid food. be able to. Note that the lips can be put on the opened spout 21 to directly drink the liquid food.

[0005] The pull tab 15 has a larger area than the spout 21, and when attached to the packaging material 11, the top wall 12
And a vertical portion 24 extending along the side wall 20 and covering the periphery of the spout 21 to prevent contamination, and a vertical portion 24 extending along the side wall 20 and serving as a knob when the pull tab 15 is peeled off.

[0006]

However, in the conventional packaging container, when the lips are put on the opened spout 21 and the liquid food is directly drunk, the mouth feel around the spout 21 is not good.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a packaging container which can solve the above-mentioned problems of the conventional packaging container and improve the mouthfeel of a spout and a method of manufacturing the same.

[0008]

For this purpose, in the packaging container according to the present invention, the molten resin is formed by directly discharging the molten resin to the top wall as a thick portion surrounding the spout and having no lid. And a pull tab adhered from the front side of the packaging material constituting the top wall to cover the spout portion, and further have an inner tape adhered from the back side of the packaging material. .

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing an initial state of a packaging container according to an embodiment of the present invention, and FIG. 3 is a diagram showing an opened state of the packaging container according to the embodiment of the present invention.

In the figure, 29 is a packaging container, 30 is a packaging container body, and the packaging container body 30 has a body 31 having a substantially octagonal cross section, and extends upward from the body 31. The lower end has a substantially octagonal shape, the upper end 32 has an upper end having a substantially square shape, and extends downward from the body 31, and the upper end has a substantially octagonal shape,
The lower end has a lower end (not shown) having a substantially square shape. The body 31 includes a front wall 34, a rear wall (not shown), two side walls 35 (only one of the side walls 35 is shown in the drawing), and a space between the front wall 34 and each side wall 35. And four trunk connecting walls 36 (only one of the trunk connecting walls 36 is shown in the figure) disposed between the rear wall and each side wall 35. Each of the front wall 34, the rear wall, the side wall 35, and the trunk connecting wall 36 has a rectangular shape.

The upper end 32 has a top wall 37, a front wall 38 connecting the top wall 37 and the front wall 34, a rear wall (not shown) connecting the top wall 37 and the rear wall, Two side walls 39 (only one side wall 39 is shown in the drawing) connecting the top wall 37 and each side wall 35, and four connections connecting the top wall 37 and each body connecting wall 36. The wall 40 (one of the connecting walls 40 in the figure)
Just show. ). Each of the front wall 38, the rear wall, and the side wall 39 has a trapezoidal shape with an upper bottom placed down, and the connecting wall 40 has a triangular shape with one apex placed on the top wall 37. . Reference numeral 46 denotes a seal formed in the center of the top wall 37, and 47 denotes an ear.
Is fused to the side wall 39.

The lower end connects a bottom wall, a front wall connecting the bottom wall to the front wall 34, a rear wall connecting the bottom wall to the rear wall, and a bottom wall to each side wall 35. It consists of two side walls, and four connecting walls connecting the bottom wall and each body connecting wall 36.

The packaging container body 30 is formed by molding a packaging material. For this purpose, a fold is formed in the packaging material in advance, and the packaging material is bent along the fold to form a prototype container. Subsequently, a predetermined molding process is performed on the prototype container to form a packaging container body 30 having a final shape. The packaging material is made of a laminated body having flexibility, and has a paper base (not shown), an outermost layer (not shown) made of polyethylene resin or the like coated on the surface of the paper base, and a back surface of the paper base. A barrier layer (not shown) having a gas barrier property, and an innermost layer (not shown) made of polyethylene resin or the like coated on the back surface of the barrier layer.

By the way, a spout guide 71 is attached by fusion at a predetermined position on the top wall 37, for example, substantially at the center of a position near the boundary line L1 between the top wall 37 and the front wall 38. The spout guide 71 has a “U” -shaped thick portion and is formed by directly discharging a molten resin onto the top wall to adhere the resin, and does not include a lid. A spout 51 formed of a punched hole is formed at a spout set at a predetermined position on the top wall 37.

A pull tab 75 is adhered from the front side of the packaging material so as to cover the inside of the spout. The pull tab 75 is made of aluminum foil (foil) and has a barrier layer having a gas barrier property, an outermost layer made of polyethylene resin or the like coated on the surface of the barrier layer, and a polyethylene resin coated on the back surface of the barrier layer. And the like. The pull tab 75 has an area larger than the spout 51 and, when attached to the packaging material, the top wall 37.
And a vertical portion 75b that extends along the spout 51 to cover the periphery of the spout 51 so as not to get dirty, and a vertical portion 75b to be gripped when the pull tab 75 is peeled off. Further, an inner tape 77 is attached from the back side of the packaging material on the top wall 37, and is sealed with the pull tab 75 and the periphery of the spout 51.

Here, a description will be given of a method of manufacturing the spout guide 71 in which the molten resin is directly discharged onto a packaging material before becoming a packaging container. The molten resin moves in a tube (not shown), This is a method of squeezing and welding at a constant speed, for example, from the nozzle tip (not shown). At this time, the spout guide is formed at a desired position by moving the nozzle to a desired position with respect to the packaging material, and at the same time, the nozzle By controlling the moving speed, the desired thickness can be changed (because the resin squeezed from the nozzle tip has the same capacity per unit time). For example, the shape becomes thicker when the moving speed of the nozzle is slow, and becomes thinner when the moving speed of the nozzle is fast. In any case, the moving speed of the nozzle tip is relatively determined in consideration of the moving speed of the packaging material. Of course, instead of squeezing out the molten resin from the nozzle tip at a constant speed, it is also possible to change the squeezing amount per time according to a desired shape each time. As described above, in the case of forming on a packaging material before becoming a packaging container, since a spout guide is formed in the packaging material in advance, it is not necessary to form a spout guide after positioning the container body. That is, there is no need to stop the container main body on the conveyor or once take out the container main body from the conveyor to form the spout guide and then set the container main body on the conveyor again, so that the position at which the spout guide is formed varies. Can be prevented, and the quality of the packaging container can be improved.

Of course, the forming process using the nozzle can be performed after the packaging container is formed.

Therefore, as shown in FIG. 3, the inner tape can be broken by peeling the pull tab 75 from the packaging container body 30, the spout 51 can be opened, and the packaging container 29 can be opened. Then, the lips can be applied to the opened spout 51 to directly drink the liquid food. In this case, the spout guide 71
Since the spout portion is surrounded by the spout portion, the mouthfeel of the spout portion can be improved. Moreover, it is easy to drink liquid food.

By tilting the packaging container 29, the liquid food can be poured from the spout 51 into a container such as a glass (not shown).

In the present embodiment, the spout guide 71 has a “U” along the front edge and side edge of the spout 51.
Although it is formed in the shape of a letter, it can also be formed in a closed loop along the inner peripheral edge of the spout 51. In the present embodiment, the spout 51 is formed by a punch hole in the spout portion, and is opened by peeling the pull tab 75. The spout may be formed by a broken portion including an eye, a prelaminate, a half-cut portion, or the like, and the pull-out tab 75 is pulled up to break the broken portion to open the spout. In that case, the inner tape becomes unnecessary.

As described above, since the spout guide 71 is easily formed directly on the top wall, a large-scale spout guide manufacturing apparatus and a device from storage to transport and supply are not required at all, and the packaging container 29 The manufacturing process can be greatly simplified. Furthermore, by using the formation by the nozzle, the spout guide of any shape can be easily changed without a complicated set-up according to the type of the product to be filled in the packaging container, and further, the capacity (size) of the packaging container, Flexible. Further, by changing the outlet shape of the nozzle, the cross-sectional shape of the spout guide can be changed to a circular shape, an elliptical shape, a circular twist shape, or the like.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0024]

As described in detail above, according to the present invention, the packaging container has a thick portion without a lid surrounding the spout portion, and the spout guide welded to the top wall. And a pull tab adhered so as to cover the spout from the front side of the packaging material constituting the top wall.

In this case, since the spout portion is surrounded by the spout guide, the mouth feel of the spout portion can be improved. Moreover, it is easy to drink liquid food.

Further, since the spout guide is easily formed by directly discharging the molten resin, the manufacturing process of the packaging container can be simplified.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an initial state of a packaging container according to an embodiment of the present invention.

FIG. 2 is a perspective view of a conventional packaging container.

FIG. 3 is a diagram showing an opened state of the packaging container according to the embodiment of the present invention.

[Explanation of symbols]

 12, 37 Top wall 15, 75 Pull tab 29 Packaging container 38 Front wall 71 Spout guide 77 Inner tape

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 3E060 AA04 CF03 CF13 DA14 DA17 DA21 EA03 EA13 3E062 AA20 AB02 AC05 AC07 KA01 KA04 KA10 KB02 KB16 KC01 3E067 AA03 AB26 BA06A BA13A BB01A BB14A BB25A BC07AEB24

Claims (2)

[Claims] (A) a spout guide attached to a packaging material top wall with a thick portion without a lid and surrounding the spout portion; and (b) from the front side of the packaging material top wall. A packaging container comprising: a pull tab attached to cover the spout portion; and (c) an inner tape adhered from the back side of the packaging material top wall, wherein the spout guide comprises the packaging material. A manufacturing method formed by directly discharging a molten resin onto a top wall. 2. A packaging container formed by the production method according to claim 1.