JP2008155954A - Spout stopper, packaging container and method for manufacturing packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spout stopper which protects a content from the outside, is released from a spout as designed when it is unsealed, has no possibility of remaining or falling in a container when it is drunk, has a high reliability on the spout, and can be manufactured at a low cost, and to provide a packaging container for liquid and a method for manufacturing the packaging container. <P>SOLUTION: The spout stopper consists of the spout 10 having a spout cylinder 5 provided on a spout hole 42 on a top wall of the packaging container, and a base part 6 which is integrated with the spout cylinder and is jointed with a container wall on the outer peripheral side of the spout hole, a cap 11 covering the spout, and a pull tab 8 built in so as to seal the spout and breakable. The spout stopper is equipped with a gas barrier film 13 covering the spout hole from the inside of the container, and integrally molded with the spout stopper. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a spout stopper for a container filled with a beverage or the like, a packaging container, and a manufacturing device for the packaging container.

In some containers filled with liquid foods such as juice and milk, a web-like packaging laminate material with a crease line in advance is formed into a tube shape and vertically sealed in the direction of the vertical line of the tube. Fill the material with food, seal with a transverse seal in the transverse direction at predetermined intervals, cut in the middle of the transverse seal zone to obtain a pillow-shaped preform, and fold along the crease line to wrap the final shape container obtain.

The packaging container has various spout stoppers. A spout provided with a spout provided in a spout hole of a liquid paper container sealed so as to be ruptured, a cap that covers the spout, and an opening means built in the spout, such as an opening blade and a pull ring, and This is a liquid packaging container. (See Patent Documents 1 and 2)

Japanese Utility Model Publication No. 63-86021 Japanese Patent Laid-Open No. 08-183555

A spout provided in a container pouring hole sealed so as to be ruptured, a cap covering the spout, and an opening blade and a pulling ring incorporated in the spout, and a liquid packaging container for the spout In combination with the container body, it is necessary to protect the contents of the container from external oxygen and the like.
Further, it is necessary to prevent breakable pull tabs, pull rings, etc. from leaving the spout exactly as designed when opened, and remaining or dropping inside the container when drinking.
Furthermore, it is desirable that the spout be highly reliable so that the spout does not come off or be distorted during opening and drinking.
Moreover, the spout stopper and the liquid packaging container must be able to be manufactured at a low cost.

  The present invention responds to the above-mentioned need and desire, protects the contents of the container from the outside, the opening means is detached from the spout as designed at the time of opening, and does not remain or fall inside the container at the time of drinking. An object of the present invention is to provide a spout stopper, a packaging container, and a method for producing a packaging container, which can be manufactured at low cost with high reliability.

The spout stopper of the present invention that solves this problem has a spout cylinder provided in a spout hole of a liquid paper container, and a base that is integrated with the spout cylinder and joined to a container wall around the spout hole. A spout plug comprising a spout, preferably a cap covering the spout, and a breakable pull tab incorporated to seal the spout;
The outlet hole is covered from the inside of the container, and has a gas barrier film integrally formed with the outlet stopper.

In the liquid packaging container according to the present invention, a web-shaped laminated packaging material having a predetermined crease line is formed into a tube shape, and both edges of the packaging material are overlapped to form an overlap. Vertical sealing is performed to form a vertical sealing zone, the contents are filled in the tubular packaging material, the packaging material is pressed in the transverse direction at predetermined intervals, and sealed by a horizontal seal to form a horizontal sealing zone. It is a packaging container formed by being cut along the crease line by being cut in the middle of the seal zone to obtain a pillow-shaped preform,
A spout tube provided in a pour hole on the top wall of the packaging container, a spout having a base that is integrated with the pour tube and joined to the container wall around the pour hole, and preferably a cap that covers the spout; It has a spout tap consisting of a breakable pull tab built in to seal the spout,
The spout stopper covers the spout hole from the inside of the container and includes a gas barrier film integrally formed with the spout stopper.

According to the manufacturing method of the packaging container of the present invention, a web-like laminated packaging material having a predetermined crease line is prepared, and the web-like laminated packaging material is perforated at predetermined intervals to form an extraction hole, corresponding to the inside of the container. A predetermined cavity has a predetermined cavity so as to cover the inside of the pouring hole, a first mold having a gas barrier film placed on the inner wall, and a predetermined cavity so as to cover the outer side of the pouring hole corresponding to the outside of the container A second mold having a mold, a molten resin is injected from the cavity / gate into the cavity, a spout tube and spout of the spout plug are formed, a web-shaped laminated packaging material is formed into a tube shape, and the packaging material The two edges are overlapped to form an overlap, and the overlap is longitudinally sealed in the vertical direction to form a vertical seal zone, the contents are filled into the tubular packaging material, and the packaging material is filled at predetermined intervals. Press in the transverse direction and A horizontal seal zone is formed by sealing with a tape, and a pillow-shaped preform is obtained by cutting at the horizontal seal zone, a packaging container is obtained by folding along a crease line, and a cap is disposed so as to cover the spout. A method of manufacturing a packaging container,
A spout stopper covers the spout with a spout tube provided in a spout hole in the top wall of the packaging container, a spout having a base that is integrated with the spout tube and joined to the container wall around the spout hole, and the spout A gas barrier film having a spout stopper composed of a cap and a breakable pull tab incorporated so as to seal the spout, the spout stopper covering the spout hole from the inside of the container, and being integrally formed with the spout stopper It is characterized by providing.

  In a preferred embodiment of the present invention, the gas barrier film is composed of inner and outer layers of polyethylene resin and an aluminum foil intermediate layer.

According to the present invention described above, the following advantageous effects can be obtained.
In the present invention, a spout tube provided in a pour hole of the liquid paper container, a spout having a base that is integrated with the pour tube and joined to a container wall around the pour hole, and preferably a cap that covers the spout And a breakable pull tab incorporated so as to seal the spout, having a gas barrier film that covers the pouring hole from the inside of the container and is integrally formed with the pouring plug.
There is a risk that external oxygen gas or the like may permeate through a spout hole without a container wall and a spout made of plastic without gas barrier properties. In this invention, since the pouring hole is covered with a gas barrier film, the contents of the container can be protected from external oxygen gas and the like.

Since the gas barrier film that covers the dispensing hole from the inside of the container is integrally formed with the spout stopper, when the pull tab is pulled up at the time of opening, it breaks at the weak line of the pull tab, and the gas barrier film integrated with the pull tab is also lifted. It is possible to prevent the spout from leaving the spout exactly as designed at the time of opening and remaining or falling into the container at the time of drinking.

The gas barrier film covers the spout hole from the inside of the container, and the gas barrier film is integrally formed with the spout stopper. Therefore, the spout is fixed to the container wall with the gas barrier film and the base, and the spout is detached from the container when opening and drinking. Reliability can be improved without distortion.

In the spout stopper and the liquid packaging container of the present invention, the constituent elements (gas barrier film, spout tube and spout) of the spout stopper are integrated, so that the constituent elements can be directly poured into the web-like laminated packaging material. The outlet hole can be molded by an injection molding method, and the spout stopper and the liquid packaging container can be manufactured at a low cost.

The present invention provides a spout stopper and a liquid packaging container that protects the contents of the container from the outside, and the opening means is detached from the spout as designed when opened, and does not remain or drop inside the container when drinking. And can be manufactured at low cost.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view showing a spout portion and manufacturing of an embodiment of a spout plug according to the present invention.
FIG. 2 is a sectional view showing a manufacturing process of an embodiment of the spout stopper according to the present invention.
FIG. 3 is a perspective view of an example of a packaging container according to the present invention.
FIG. 4 is a schematic perspective view of an example of a packaging and filling apparatus for packaging containers according to the present invention.
FIG. 5 is an external perspective view of the spout portion of the spout stopper according to the present invention.
FIG. 6 is a sectional view showing a spout portion and a manufacturing process of another embodiment of the spout stopper according to the present invention.

A packaging container is manufactured by the packaging filling apparatus shown in FIG. In this apparatus example, the web-like (band-like) packaging laminate material 1 is accommodated in a packaging filling apparatus in a reel state. The packaging laminate material 1 comprises a paper base material and a flexible laminate in which polyethylene resin is laminated on both sides of the paper base material, and a barrier layer such as an aluminum foil is formed between the paper base material and the film. Then, exterior printing is performed in advance on a portion corresponding to the surface of the packaging container 14.

The fed packaging laminated material 1 is continuously conveyed by a feeding device as a conveying means, and the web-shaped packaging laminated material 1 is punched at predetermined intervals by a punching device 40 through a bending roller, a damper roller, and the like. Is formed.
Subsequently, the spout portion of the spout hole of the spout hole is formed by the injection molding device 41 for forming the spout portion of the spout plug.

Then, it is sent to the sealing tape sticking apparatus 3, and the sealing tape is stuck along one edge part of the packaging laminated material 1 by the sealing tape sticking apparatus.
When the sealing tape is joined to the edge of the strip-shaped packaging laminate material 1, the pressure-roller is disposed and pressed on one side with the strip-shaped packaging laminate material and the sealing tape sandwiched therebetween, and the pressure applied to the other side by the pressure roller. A counter roller is disposed so as to face and hold the counter roller.
As the packaging laminate material is conveyed, the pressure roller and the counter roller are pressed and rotated with the packaging laminate material and the sealing tape sandwiched therebetween, and the mating surfaces of the vertical seal portions are sealed and bonded.

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 a sterilization chamber (not shown). Then, the packaging laminate material 1 is gradually deformed by the molding ring 7 and is formed into a tube shape (tubular shape). The packaging laminate material 1 is sealed in the longitudinal direction by the longitudinal sealing device 10, and the fluid food supplied via a filling pipe (not shown) is filled into the packaging laminate material 1.

When both ends of the packaging laminate material formed into a tube shape are pressed together with the sealing tape by the longitudinal seal device 20 for longitudinal sealing, the one edge and the other edge of the strip packaging laminate material are sandwiched between them. The pressure roller is rotatably arranged and pressed on one side, and the counter roller is rotatably arranged on the other side so as to receive pressure from the pressure roller so as to oppose and support the pressure roller. The mating surfaces are sealed and bonded.

The tubular packaging laminate material is guided by a roller, sent to a lateral sealing device (not shown), sandwiched and sealed in the lateral direction, and the laterally sealed packaging laminate material is cut with a knife or the like to form a pillow. A preform 21 is formed.
The pillow-shaped preform 21 is molded into a final shape by a final molding apparatus (not shown), and the packaging container 14 that stores the fluid food is completed.
FIG. 3A shows an external perspective view of the upper portion of the final shape brick-shaped container example. In this example, the dispensing cylinder 5 and the spout 10 are integrally formed on the top wall of the packaging container 14.

In the example of the packaging and filling apparatus shown in FIG. 4, a cap mounting apparatus is provided on the downstream side of the production line of the final molding apparatus.
As shown in FIGS. 3 (A) and 3 (B), the cap 11 is mounted from above the pouring cylinder 5 and the spout 10 on the top wall of the packaging container 14.

In FIG. 1, the spout part of the spout stopper example is shown.
The spout stopper covers the spout and a spout 10 having a spout cylinder 5 provided in a spout hole of the container, a base 6 that is integrated with the spout cylinder 5 and is joined to a container wall outside the spout hole. A gas barrier film 13 comprising a cap (not shown in FIG. 1) and a breakable pull tab 8 incorporated so as to seal the spout, covering the pouring hole from the inside of the container, and integrally formed with the pouring spout Have
A weakening line 60 is formed on the outer periphery of the pull tab 8, which can be used as a guide for easy opening.

FIG. 1 shows an example of a spout part forming injection molding apparatus.
The spout part of the spout part of the spout hole is formed by this spout part forming injection molding apparatus.
In this apparatus, a first mold 15 having a predetermined cavity and having a gas barrier film 13 placed on the inner wall is disposed so as to cover the inside of the pouring hole corresponding to the inside of the container, and the pouring corresponding to the outside of the container is performed. A second mold 16 having a predetermined cavity is disposed so as to cover the outside of the outlet hole. The molten resin is injected into the cavity from the cavity gate 17 to form the spout cylinder 5 and spout 10 of the spout stopper, and is integrated with the gas barrier film 13.

In FIG. 5, the external appearance of the spout part of the spout stopper by this Example is shown.
An example of a spout stopper includes a spout cylinder 5 having a convex thread on the outer periphery and a base 6 that is integrated with the spout cylinder 5 and joined to a container wall around the spout hole. The spout 10 has a cylindrical spout 10, a pull tab 8 formed on the inner bottom surface of the spout 10, and a pull ring 9 connected to the pull tab 8 and used at the time of opening.

With reference to FIG. 2, the example of a manufacturing method of a packaging container is demonstrated.
The web-shaped laminated packaging material 1 is conveyed in the direction of the arrow, and the web-shaped laminated packaging material 1 is punched at predetermined intervals by a punching device to form the dispensing holes 42.
A first mold 15 having a predetermined cavity and having the gas barrier film 13 placed on the inner wall is disposed so as to cover the inside of the pouring hole 42 corresponding to the inside of the container, and the pouring hole 42 corresponding to the outside of the container. A second mold 16 having a predetermined cavity is disposed so as to cover the outside.
The molten resin is injected from the cavity gate into the cavity, and the spout tube 5 and spout 10 of the spout plug are formed.

Next, the packaging material is formed into a tube shape, vertically sealed, filled with the contents in the tubular packaging material, laterally sealed and cut to obtain a packaging container, and a cap is provided to produce the packaging container. To do.
The spout stopper of the obtained container is provided with a spout cylinder 5 provided in a spout hole on the top wall of the packaging container, and a base 6 that is integrated with the spout cylinder and joined to the container wall around the spout hole. The spout 10 includes a spout 10 having a spout, and a cap that covers the spout, and a breakable pull tab and a pull ring 9 incorporated so as to seal the spout. The spout plug covers the spout hole from the inside of the container. The gas barrier film 13 is integrally formed with the spout stopper.

The film according to this embodiment is made of a material having a gas barrier property, and may be a material in which they are laminated. The material having a gas barrier property is a barrier packaging material having a barrier property with respect to gas such as oxygen and aroma, such as a metal foil such as aluminum, an ethylene-vinyl alcohol copolymer (EVOH), a polyamide such as nylon ( PA, plastic films deposited with silicon oxide (SiOx), polyethylene terephthalate (PET), and the like.

The sealant layer for the inner and outer layers of the laminated material is polyethylene (including metallocene PE), ethylene-α / olefin copolymer, polypropylene, polybutene, polyisobutene, poisobutylene, polybutadiene, polyisoprene, ethylene-methacrylic acid copolymer. Or an ethylene-unsaturated carboxylic acid copolymer such as an ethylene-acrylic acid copolymer, or an acid-modified polyolefin resin such as a carboxylic acid group modified by modifying them, a polyolefin grafted with maleic anhydride, ethylene There are ionomer (IO), ethylene-vinyl acetate copolymer (EVA), etc., in which molecules between ethyl acrylate copolymer and ethylene-vinyl methacrylate copolymer are crosslinked with metal ions.

FIG. 6 shows another embodiment of the spout part forming injection molding apparatus.
The spout part of the spout part of the spout hole is formed by this spout part forming injection molding apparatus.
In this apparatus, a first mold 15 having a predetermined cavity and having a gas barrier film 13 placed on the inner wall is disposed so as to cover the inside of the pouring hole corresponding to the inside of the container, and the pouring corresponding to the outside of the container is performed. A second mold 16 having a predetermined cavity is disposed so as to cover the outside of the outlet hole. The molten resin is injected from the cavity gate 17 into the cavity to form the spout tube 5 and spout 10 of the spout stopper, and the gas barrier film 13 is integrated.
A weak line 60 is formed on the pull ring 9 and the pull tab 8 for easy opening.

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 production of a liquid packaging container with a spout stopper for packaging and filling beverages such as juice and milk.

FIG. 1 is a cross-sectional view showing a spout portion and manufacturing of an embodiment of a spout plug according to the present invention. FIG. 2 is a sectional view showing a manufacturing process of an embodiment of the spout stopper according to the present invention. FIG. 3 is a perspective view of an example of a packaging container according to the present invention. FIG. 4 is a schematic perspective view of an example of a packaging and filling apparatus for packaging containers according to the present invention. FIG. 5 is an external perspective view of the spout portion of the spout stopper according to the present invention. FIG. 6 is a cross-sectional view showing the spout portion and manufacture of another embodiment of the spout plug according to the present invention.

Explanation of symbols

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Claims (4)

A spout tube provided in a pour hole of the liquid paper container, a spout having a base unit integrated with the pour tube and joined to a container wall outside the pour hole, and sealing the spout A spout tap comprising a built-in breakable pull tab,
A spout stopper that covers the spout hole from the inside of the container and has a gas barrier film integrally formed with the spout stopper. A web-like laminated wrapping material having a predetermined crease line is formed into a tube shape, and both edges of the wrapping material are overlapped to form an overlap. The tubular packaging material is filled with the contents, and the packaging material is pressed in the transverse direction at predetermined intervals, sealed by a transverse seal to form a transverse seal zone, and cut in the middle of the transverse seal zone. A pillow-shaped preform is obtained and is a packaging container formed by folding along the crease line,
A spout tube provided in a pour hole on the top wall of the packaging container, a spout having a base portion integrated with the pour pipe and joined to a container wall outside the pour hole, and sealing the spout Has a spout tap consisting of a breakable pull tab built in,
A packaging container comprising a gas barrier film which is integrally formed with the spout stopper, wherein the spout stopper covers the spout hole from the inside of the container. A web-like laminated packaging material having a predetermined crease line is prepared,
A web-shaped laminated packaging material is perforated at predetermined intervals to form an extraction hole,
A first mold having a predetermined cavity and a gas barrier film placed on the inner wall is disposed so as to cover the inside of the pouring hole corresponding to the inside of the container, and the outside of the pouring hole corresponding to the outside of the container is covered. A second mold having a predetermined cavity is disposed,
Injecting molten resin from the cavity gate into the cavity to mold the spout tube and spout of the spout plug,
Forming a web-like laminated packaging material into a tube shape, overlapping both edges of the packaging material to form an overlap,
A vertical seal zone is formed by vertical sealing in the vertical direction with the overlap,
Fill the tubular packaging material with the contents,
The packaging material is pressed in the transverse direction at predetermined intervals, and is sealed by a transverse seal to form a transverse seal zone,
Cut at the horizontal sealing zone to obtain a pillow-shaped preform,
Fold along the crease line to obtain a packaging container,
A method of manufacturing a packaging container by arranging a cap so as to cover the spout,
A spout having a spout tube provided in a spout hole in the top wall of the packaging container, and a base part integrated with the spout tube and joined to a container wall around the spout hole; A spout plug comprising a cap covering the spout and a breakable pull tab incorporated to seal the spout;
A method for producing a packaging container, wherein the spout stopper covers the spout hole from the inside of the container and includes a gas barrier film integrally formed with the spout stopper. The method for producing a packaging container according to claim 3, wherein the gas barrier film comprises an inner and outer layer of polyethylene resin and an aluminum foil intermediate layer.