JP2015000745A - Method for manufacturing package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for efficiently manufacturing a package where an intermediate part of a packaging container comprising a double bag is filled with gas, and a purity of the filled gas is high.SOLUTION: A method for manufacturing a package includes: housing contents 24 in an inner bag of a packaging container 1 having a double structure comprising the inner bag 2 having permeability to intended gas, and an outer bag 3 having no gas permeability; and forming a gas housing part 22 by filling a space between the inner bag and the outer bag with the intended gas. Furthermore, the method for manufacturing the package includes: blowing gas from a gas filling port 8 provided on one edge part of the gas housing part, and simultaneously, discharging air in the gas housing part and part of the gas from a gas discharge port 9 provided on the other edge part of the gas housing part; closing the gas discharge port; and sealing the gas discharge port and the gas filling port.

Description

  The present invention relates to a method for manufacturing a gas-filled package that exhibits functions and effects according to the type of gas by filling the middle part of a container made of double bags with gas.

  As an example in which contents are stored in a packaging container made of a double bag and gas is sealed in an intermediate portion of the double bag, there is a method for manufacturing a food package described in Patent Document 1. The method described in Patent Document 1 includes an outer container formed of a carbon dioxide impermeable material, a partition portion formed of a carbon dioxide permeable material in the outer container, and a food storage unit and carbon dioxide gas. This is a method for producing a food package containing carbon dioxide by storing food in the food storage section, filling and sealing the carbon dioxide gas in the carbon dioxide storage section, and storing it using the packaging container provided with the storage section.

  When this method is used, it must be heated to a certain degree at the time of filling, such as a fine carbonated jelly beverage, and it is applied to contents that cannot be filled with carbon dioxide gas at the same time. The carbon dioxide gas in the middle part dissolves in the jelly beverage, and a package containing the fine carbonated jelly beverage can be obtained efficiently.

  FIG. 7 is an example of a double packaging bag used for such a purpose. A body comprising a double bag, a cap (5), a cap (6), a straw (7) connected to the cap, and carbon dioxide gas blown from the gas filling port (8) And the communication part (23) which is a gap between the outer bag and the entire intermediate part of the double bag. FIG. 8 is a cross-sectional explanatory view schematically showing a state where gas is blown into the double bag.

JP 2011-105317 A

  According to the method for producing a food package described in Patent Document 1, as a filling method of carbon dioxide gas, “when air is present in the carbon dioxide gas storage part, the air is sucked out as much as possible, and the high concentration is quickly obtained. Carbon dioxide gas is blown in. The procedure of “sealing the carbon dioxide containing portion by sealing the opening with a heat seal or the like so as not to escape the blown carbon dioxide” is described.

  In general, when a closed space is filled with gas, the problem is how to completely replace the air present in the space with the target gas, as shown in FIGS. If there is only one gas filling port, air must be sucked and carbon dioxide blown from the same port, so even if switching is done quickly, some air is inevitable and enclosed in the package. The purity of the generated gas could not be sufficiently increased.

  In addition, since two steps of a suction step and a blowing step are required, it takes a long time to fill the gas and there is a problem that the production efficiency is poor.

  The problem to be solved by the present invention is to efficiently produce a package with a high purity of the filled gas in producing a package in which gas is filled in an intermediate portion of a double-bag packaging container. A method is proposed.

  As means for solving the above-mentioned problems, the invention according to claim 1 has a double structure comprising an inner bag having permeability to a target gas and an outer bag having no gas permeability. A method of manufacturing a package body in which contents are stored in an inner bag of a packaging container and a gas storage portion is formed by filling a space between an inner bag and an outer bag with a target gas, the gas storage portion At the same time, gas is blown from the gas filling port provided at one end of the gas, and at the same time, air and a part of the gas in the gas storage unit are discharged from the gas discharge port provided at the other end of the gas storage unit. A method for producing a package is characterized in that the discharge port is closed, and then the gas discharge port and the gas filling port are sealed.

  According to the method for manufacturing a package according to the present invention, the gas is blown from one end of the gas storage portion and the internal air is discharged from the other end, so that the internal air is efficiently discharged. The purity of the gas filled in the gas storage unit can be increased in a short time.

  The invention according to claim 2 is characterized in that air and gas are sucked from the gas discharge port at the same time as gas is blown from the gas filling port. It is.

  The invention according to claim 3 is the method for manufacturing a package according to claim 1 or 2, wherein the gas is carbon dioxide gas and the contents are food or beverage.

  According to a fourth aspect of the present invention, there is provided the packaging with a stopper, wherein the packaging container has a stopper, a cap for sealing the stopper, and a straw connected to the stopper and inserted into the inner bag. It is a container, The manufacturing method of the package body of Claim 3 characterized by the above-mentioned.

  The invention according to claim 5 is the method for producing a package according to claim 1 or 2, wherein the gas is nitrogen gas, and the contents are food or articles that are easily oxidized. .

  According to the manufacturing method of the package according to the present invention, gas is blown from the gas filling port provided at one end of the gas storage unit, and at the same time from the gas discharge port provided at the other end of the gas storage unit. Since the air in the gas storage part and a part of the gas are discharged, the air in the gas storage part is efficiently expelled and replaced by the gas, so that the gas purity in the gas storage part is increased in a short time. Have

  In the method for manufacturing a package according to the present invention, the contents are contained in the inner bag of the packaging container having a double structure including an inner bag having permeability to the target gas and an outer bag having no gas permeability. Since the gas storage part is formed by storing the object and filling the space between the inner bag and the outer bag with the target gas, the high purity gas filled in the gas storage part is efficiently contained in the inner bag. The gas concentration in the inner bag increases. Therefore, the method of the present invention can be effectively used when contents that cannot be directly blown against the contents for some reason are stored in a packaging container and gas replacement is desired after filling.

  When the gas is blown in from the gas filling port and the air and the gas are sucked from the gas discharge port as in the invention described in claim 2, the air replacement of the gas storage portion is performed more quickly. .

Moreover, in invention of Claim 3, since it has the double structure which consists of an inner bag which has a carbon dioxide permeability, and an outer bag which does not have a carbon dioxide permeability, the inner bag is filled with a beverage, By sealing the carbon dioxide gas between the outer bags, the carbon dioxide gas is transferred to the beverage in the inner bag during storage, and the beverage can be made into a carbonated beverage. At this time, use a packaging container with a stopper having a stopper, a cap for sealing the stopper, and a straw that is connected to the stopper and inserted into the inner bag. Thus, it can be suitably used as a package containing a fine carbonated beverage that can be taken with a mouth directly attached to the cap.

  In the invention according to claim 5, the content of oxygen that is easily oxidized but cannot be directly blown with nitrogen gas, such as a beverage that easily scatters, is stored, oxygen remaining in the head space is replaced, and oxygen concentration It can be used for the purpose of lowering.

FIG. 1 is an explanatory perspective view showing an example of a packaging container used in the method for manufacturing a package according to the present invention, and shows an example of a packaging container with a stopper. FIG. 2 is a schematic cross-sectional view showing the A-A ′ cross section of FIG. 1. FIG. 3 is a schematic cross-sectional view showing the B-B ′ cross section of FIG. 1. FIG. 4 is an explanatory plan view showing another example of the packaging container used in the method for manufacturing a package according to the present invention. FIG. 5 is a cross-sectional explanatory view showing the state of gas blowing and discharging in the method for manufacturing a package according to the present invention. FIG. 6 is a cross-sectional explanatory view showing the state of gas blowing and suction in the method for manufacturing a package according to the present invention. FIG. 7 is a perspective explanatory view showing an example of a conventional packaging container with a cap. FIG. 8 is a cross-sectional explanatory view showing a conventional method for filling the packaging container shown in FIG. 7 with gas.

Hereinafter, the manufacturing method of the package according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective explanatory view showing an example of a packaging container (1) used in the method for producing a package according to the present invention, and shows an example of a packaging container with a cap. 2 is a schematic cross-sectional view showing the AA ′ cross section of FIG. 1, and FIG. 3 is a schematic cross-sectional view showing the BB ′ cross section of FIG. FIG. 5 is an explanatory cross-sectional view showing the state of gas blowing and discharging in the method for manufacturing a package according to the present invention.

  The manufacturing method of the package according to the present invention is a packaging container having a double structure comprising an inner bag (2) that is permeable to a target gas and an outer bag (3) that is not gas permeable. The contents (24) are stored in the inner bag (2) of (1), and the gas storage section (22) is filled by filling the target gas in the space between the inner bag (2) and the outer bag (3). In the manufacturing method of the formed package body, gas is blown from the gas filling port (8) provided at one end of the gas storage part (22), and at the same time, the other end of the gas storage part (22). Air and a part of the gas in the gas storage section are discharged from the provided gas discharge port (9), then the gas discharge port (9) is closed, and then the gas discharge port (9) and the gas filling port (8) are sealed. It is the manufacturing method of the package characterized by doing.

The packaging container (1) shown in FIG. 1 is an example of a packaging bag with a cap, and the inner bag (2) and the outer bag (3) form a double bag, and in the side seal part (12) It is heat sealed together. The outer bag (3) has a standing pouch shape having a bottom tape (4). In the bottom seal portion (13), the inner bag (2) is not sealed integrally, and is not between the outer bag (3). The communication part (23) is formed in the gas supply part (8) so that the gas blown from the gas filling port (8) is distributed over the entire gas storage part (22).

  In the upper part of the packaging container (1), a gas filling port (8) is opened in a portion partitioned by the gas filling port seal portion (15). The gas filling port seal portion (15) has an L shape in the example of FIG. 1, and the outer bag (3) and the inner bag (2) on the surface side are bonded to each other by heat sealing in this portion. On the other hand, the gas discharge port seal portion (16) having the same shape is formed on the back surface side, and similarly, the outer bag (3) and the inner bag (2) on the back surface side are bonded together by heat sealing.

  The gas filling port seal part (15) and the gas discharge port seal part (16) may both be simple I-shaped seals, but the L-shaped effect eliminates dead space in the gas storage part (21). have. The presence of dead space is not preferable because air tends to remain inside.

  By making the gas filling port seal part (15) and the gas discharge port seal part (16) L-shaped as shown in FIG. 1, the dead space is eliminated, and the gas blown from the gas filling port (8) As the air in the gas storage part (21) is expelled, the air passes through the communication part (23) and expels the air in the gas storage part (21) on the back side from the gas discharge port (9). Hateful.

  FIG. 7 is a perspective explanatory view showing an example of a conventional packaging container with a cap used for the same application as the packaging container shown in FIG. FIG. 8 is a cross-sectional explanatory view showing a conventional method for filling the packaging container shown in FIG. 7 with gas. Conventionally, gas has been blown after the internal air is once sucked from the gas filling nozzle (17). However, the air inside cannot be completely sucked, and it is inevitable that some air is mixed at the time of switching.

  Moreover, since two steps of sucking the internal air and blowing the gas are necessary, there is a problem that it takes time to fill the gas. According to the method of the present invention, the blown gas proceeds in one direction while extruding air in the gas storage part (22), so that the air replacement and the gas filling are performed almost simultaneously, and the efficiency is extremely high. good. Further, the time required for gas filling is shortened to almost half, and the purity of the gas is improved.

  When the inner bag (2) is a thin and soft film and the outer bag (3) is a thin film, the gas filling nozzle (17) is not inserted into the gas filling port (8). Even if it blows from the outside of the bag (3), the inner bag (2) bends, so that gas can be filled.

  In the example of FIG. 1, the plug (5) is heat-sealed to the plug seal portion (14) at the center of the top seal portion (11). A cap (6) is screwed into the plug (5), and a straw (7) connected to the plug is inserted into the inner bag (2). The beverage stored in the inner bag (2) can be sucked by directly opening the mouth plug (5).

  As a method of using the packaging container shown in FIG. 1, for example, a beverage is filled as a content from the stopper (5) while being heated to 80 ° C. to 90 ° C. from the meaning of sterilization, and the cap (6) is sealed. Thereafter, carbon dioxide gas is blown from the gas filling port (8) to sufficiently fill the gas storage part (22). At this time, as shown in FIG. 5, the internal air may be naturally pushed out from the gas discharge port (9) by carbon dioxide, but as shown in FIG. 6, the suction nozzle is placed in the gas discharge port (9). By attaching (18) and forcibly suctioning, the efficiency of gas replacement can be further increased.

  The gas filling port (8) and the gas discharge port (9) are sealed in a state where the gas storage part (22) is filled with high-purity carbon dioxide. As a sealing method, heat sealing is performed so that the opening is crushed, so that sealing can be performed without leaving an extra opening, which is preferable in terms of hygiene.

  FIG. 4 is an explanatory plan view showing another example of the packaging container (1) used in the method for manufacturing a package according to the present invention. In this example, the top seal portion (11) is in an unsealed state, and after the contents are stored in the inner bag from here, the top seal portion is heat sealed. The structure of the gas filling port seal portion (15), the gas discharge port seal portion (16), the gas filling port (8), and the gas discharge port (9) is the same as the example of FIG.

  According to the method for manufacturing a package according to the present invention, nitrogen gas can also be used as the gas species. By using nitrogen gas, it is possible to store oxidizable contents such as green tea beverages and maintain freshness. When liquid is stored in a bag-like container, a space (head space) always remains at the top, but if the air in the head space is replaced with nitrogen gas, the liquid may be scattered by the blown nitrogen gas.

  According to the method for manufacturing a package according to the present invention, it is preferably applied not only to such a liquid, but also to contents that are scattered when directly sprayed with nitrogen gas, such as tea leaves and coffee powder. it can. In the case of solid contents, the air in the inner bag may be sucked and removed to form a vacuum package.

  The contents in the case of using nitrogen gas can be applied to various contents that are easily oxidized in addition to the foods as described above. Examples include metal powders such as iron powder and chemicals.

  The material of the packaging container used in the method of the present invention needs to be appropriately selected depending on the type of target gas. Needless to say, the material of the inner bag (2) is preferably a material having a high target gas permeability, but it is necessary to consider heat sealability, hygiene, cost, and the like. The material of the outer bag (3) is not only impermeable to the target gas, but also desirably impermeable to other gases such as oxygen and water vapor.

  When the target gas is carbon dioxide, the inner bag is made of a single film such as polyethylene resin (PE), polypropylene resin (PP), polystyrene resin (PS), or polyvinyl chloride resin (PVC). Is suitable. When the target gas is nitrogen gas, a single film of polystyrene resin or polyethylene resin is suitable.

  The material of the outer bag (3) includes a laminated material including aluminum foil, a laminated material including a vapor-deposited film in which a metal or metal oxide vapor-deposited layer is provided on a plastic film, an ethylene-vinyl alcohol copolymer, polychlorinated A laminated material provided with a barrier resin layer such as vinylidene may be used.

  As an example of the laminate constituting the outer bag (3), for example, a polyethylene terephthalate resin film (hereinafter abbreviated as PET) / printing layer / adhesive layer / stretched polyamide resin film (hereinafter abbreviated as ONy) / adhesive layer / LLDPE (Linear low density polyethylene resin), ONy / adhesive layer / LLDPE, ONy / adhesive layer / ONy / adhesive layer / LLDPE, PET / printing layer / adhesive layer / aluminum foil / Adhesive layer / LDPE (low density polyethylene resin) and the like.

DESCRIPTION OF SYMBOLS 1 ... Packaging container 2 ... Inner bag 3 ... Outer bag 4 ... Bottom tape 5 ... Mouth plug 6 ... Cap 7 ... Straw 8 ... Gas filling port 9 ... -Gas discharge port 11 ... Top seal portion 12 ... Side seal portion 13 ... Bottom seal portion 14 ... Cap plug seal portion 15 ... Gas filling port seal portion 16 ... Gas discharge port seal Portion 17 ... Gas filling nozzle 18 ... Suction nozzle 21 ... Content storage unit 22 ... Gas storage unit 23 ... Communication unit 24 ... Content

Claims (5)

  The contents are stored in the inner bag of a packaging container having a double structure consisting of an inner bag that is permeable to the target gas and an outer bag that is not gas permeable, and between the inner bag and the outer bag. A package for forming a gas storage part by filling a target gas with a target gas, wherein the gas is simultaneously blown from a gas filling port provided at one end of the gas storage part. The gas discharge port provided at the other end of the storage unit discharges air and a part of the gas in the gas storage unit, then closes the gas discharge port, and then seals the gas discharge port and the gas filling port. A method for manufacturing a package.   The method for manufacturing a package according to claim 1, wherein air and gas are sucked from the gas discharge port simultaneously with blowing gas from the gas filling port.   The method for manufacturing a package according to claim 1 or 2, wherein the gas is carbon dioxide and the content is food or beverage.   The said packaging container is a packaging container with a cap which has a cap, the cap which seals a cap, and the straw connected with the cap and inserted in the said inner bag. A method for producing the package according to 1.   The method for manufacturing a package according to claim 1 or 2, wherein the gas is nitrogen gas, and the contents are foods or articles whose contents are easily oxidized.