JP2015160630A - Double chamber package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double chamber package in which the interior is partitioned into two chambers by an easily detachable partition seal line, the easily detachable partition seal line can be detached easily and reliably, and thereby the two chambers can be communicated easily and reliably.SOLUTION: A double chamber package is formed as follows: the interior is sealed by using a front side film 11 and a back side film 12; the front side film 11 and the back side film 12 are sealed with each other to provide a partition seal line 1y; and the interior is partitioned into two chambers A, B by the partition seal line 1y. In the double chamber package, a pair of knob pieces 1x, 1x protruding in an outside direction of a package 1 is provided by bending the front side film 11 and the back side film 12 at a position of the partition seal line 1y, and the partition seal line 1y is configured to be easily detachable. By pulling the pair of knob pieces 1x, 1x, the partition seal line 1y can be detached easily and reliably.

Description

  The present invention uses at least two front and back films, seals the inside, and seals the front and back films to each other to provide an easily peelable partition seal line. The interior is divided into two chambers by the partition seal line. The present invention relates to a two-chamber package that is partitioned.

  Such a two-chamber package is known and used for various applications. For example, two different kinds of contents are stored in the two chambers, the easy-peelable section seal line is peeled off before the contents are poured out, and both contents are mixed inside the package, and then poured. It is a package to be taken out.

  Moreover, it is a package body which uses the film which has gas-barrier property as said two film which comprises a package body, and is provided with the spout in one of the said 2 chambers. Since this package is sealed with two films having gas barrier properties, oxygen gas in the atmosphere does not enter the inside, and this prevents the contained contents from being oxidized or altered. Is possible. However, since spouts generally do not have gas barrier properties, oxygen gas cannot be prevented from entering through the spouts. For this reason, in a package that accommodates and seals contents that are likely to be altered by oxygen gas, the interior of the package is divided into two chambers, a spout is attached to one of the chambers, and the contents are stored in the other chamber. By doing so, the oxygen gas which penetrates through the spout is blocked by the partition seal line to protect the contents.

  Patent Document 1 describes such a two-chamber package. In this package, the inside is divided into a plurality of rooms by an easily peelable section seal line, and the contents are accommodated in each room. The package can take out a plurality of contents separately, but can also be taken out after mixing inside. In the case of taking out after mixing inside, a plurality of the chambers may be communicated by striking one of the chambers from the outside and peeling off the easily peelable section seal line.

  Moreover, patent document 2 comprises two chambers, the room comprised from a package body main body, and the said small room by providing the small room branched outward from the side wall which comprises a package body, From this package body main body, The present invention relates to a two-chamber packaging body in which a partition portion is provided between the configured room and the small room, and a part of the partition portion is configured by an easily peelable partition seal line. Also in this package, after the chamber composed of the package body and the small room are communicated by applying an external force to the package body to peel off the easily peelable partition seal wire, the package body is opened and the contents are opened. Things can be taken out.

JP 2010-89793 A Japanese Patent No. 3815866

  By the way, in such a two-chamber packaging body, in order to take out the contents after communicating the two chambers, it is necessary to apply a blow or force from the outside of the packaging body to peel off the easily peelable section seal wire. To do.

However, in such a package that peels the easily peelable section seal line by impact or force from the outside of the package body, the balance between the peel strength of the easily peelable section seal line and the external force is important. When the peel strength increases due to errors in the bag process, it does not peel easily even when an external force is applied. Moreover, even if the applied external force is weak, it does not peel off easily. Moreover, when the easily peelable division seal wire is provided in a part of the partition as in the package described in the cited document 2, the applied external force is applied to the easily peelable compartment seal wire and the other partitions. Therefore, the position where the force is applied and the magnitude of the force are important, and it is difficult to peel off easily.

  Therefore, the present invention can easily and reliably peel the easily peelable compartment seal wire in a two-chamber package body having an interior divided into two chambers by an easily peelable compartment seal wire. An object of the present invention is to provide a two-chamber package that can be reliably carried out.

That is, the invention according to claim 1 uses a front side film and a back side film, seals the inside, and seals the front side film and the back side film from each other to provide a partition seal line. In a two-chamber package that is divided into two chambers,
By bending the front film and the back film at the position of the partition seal line, a pair of knobs protruding in the outer direction of the package are provided, and the partition seal line is configured to be easily peeled off. Is a two-chamber package.

  The invention according to claim 2 is the two-chamber package according to claim 1, wherein the front film and the back film have gas barrier properties.

  Next, the invention according to claim 3 is the two-chamber package according to claim 1 or 2, wherein a spout is provided in one of the two chambers.

  The present invention has an easily peelable partition seal line provided by sealing the front film and the back film with each other, and at the position of the partition seal line, a pair of knobs protruding in the outer direction of the package. Since it has a piece, the partition seal line can be easily and reliably peeled by pulling the pair of knobs in directions opposite to each other, that is, in the outer direction of the package. Moreover, since the pulling force can be easily controlled as compared with the striking and pushing force, even if there is some variation in the peel strength of the partition seal line based on the bag making process, the peel is easy.

FIG. 1A is a perspective view of a two-chamber package according to an embodiment of the present invention, and FIG. 1B is a longitudinal sectional view thereof. It is principal part sectional drawing which concerns on embodiment of this invention. It is principal part sectional drawing which concerns on another embodiment of this invention. It is principal part sectional drawing which concerns on the 3rd Embodiment of this invention.

  The present invention will be described below with reference to the drawings.

  The present invention is a package formed using at least a front film and a back film. In addition, it may have a bottom film or a spout.

The package according to the present invention is configured by sealing the inside thereof. When the package is composed of a front film and a back film, the front film and the back film are sealed around the periphery. Can be sealed. In addition to the front film and the back film, in the case of having a bottom film, the front film, the back film, and the bottom film can be sealed and sealed around them. Moreover, what is necessary is just to pinch and seal a spout between a front side film and a back side film, when it has a spout.

  In any case, the package according to the present invention needs to provide a partition seal line that divides the interior into two chambers by sealing the front film and the back film together. In addition, the partition seal line needs to be configured to be easily peeled off.

  FIG. 1A of the drawing shows a package 1 having a spout 13 in addition to the front film 11 and the back film 12. FIG. 1B is a longitudinal sectional view thereof. In addition, illustration of the content is abbreviate | omitted.

  As can be seen from FIG. 1 and FIG. 2, the package body seals the front side film 11 and the back side film 12 from each other at both side portions and the bottom portion, so that the side seal lines 1a and 1b and the bottom seal line 1d are provided. Provided. Moreover, in the top part, the top part sealing line 1c is provided by interposing the spout 13 between the front side film 11 and the back side film 12, and sealing these front side film 11 and the back side film 12 mutually. And the inside of the package 1 is sealed by forming these seal lines 1a-1d. In addition, when spout 13 pours out the contents, the spout 13 opens its spout and needs to be sealed until use.

  Next, this package body partitions the inside into two chambers A and B by sealing the front film 11 and the back film 12 with each other at an intermediate portion in the vertical direction and providing a partition seal line 1y. As can be seen from the figure, in this example, the spout 14 is attached to the A chamber, and the B chamber is surrounded by the front film 11 and the back film 12 and is configured wider than the A chamber. The partition seal line 1y is configured to be easily peeled off. For this reason, the section seal line 1y can be easily peeled by pulling a knob to be described later toward the outside of the package 1.

  Next, it is necessary for the package of the present invention to provide a pair of tabs protruding in the outer direction of the package by bending the front film and the back film at the position of the partition seal line. FIG. 3 is a cross-sectional view of a main part for explaining the periphery of the knob 1x in the package 1 described above.

  That is, in this package 1, the knob 1x is disposed at the center position of the partition seal line 1y. That is, in the packaging body 1, a folding line 1 xa is provided on the front film 11, and the front film 11 is valley-folded at the folding line 1 xa to form the A chamber side knob 1 x 1 that protrudes outward in the packaging body 1. Then, the B chamber side knob 1x2 is formed by bending so as to be reversed at the folding line 1xc. As can be seen from the figure, the A room side knob 1x1 and the B room side knob 1x2 are overlapped with each other to form the knob 1x. The room A side knob 1x1 and the room B side knob 1x2 may be bonded to each other or may remain unbonded. Next, the B room side knob 1x2 reaches the fold line 1xb from the fold line 1xc, and is bent at the fold line 1xb. The back side film 12 is also provided with the same tab 1x, and the tab 1x provided on the front side film 11 and the tab 1x provided on the back side film 12 are in positions facing each other. Therefore, by pulling the pair of knobs 1x and 1x in directions opposite to each other, that is, in the outer direction of the package 1, the easily peelable section seal line 1y can be easily peeled off.

In the above example, the knob 1x is positioned at the center of the partition seal line 1y, but the knob may be positioned at the end of the partition seal line. 4 and 5 are main part sectional views showing such an example. That is, in the package shown in FIG. 4, the knob 1x is located at the B chamber side end of the partition seal line 1y. In the package shown in FIG. 5, the knob 1x is located at the end of the compartment seal line 1y on the A chamber side. Thus, when the knob is located at the end of the partition seal line, it is desirable that the A chamber side knob 1x1 and the B chamber side knob 1x1 are bonded to each other.

  Any film can be used as the front film and the back film according to the present invention. Preferably, it is a film in which a sealant layer is provided inside the base film. As the sealant layer, for example, a polyethylene film or a multilayer coextruded film including a polyethylene layer can be used. As a base film, a polyester film, a polyamide film, etc. can be used, for example. Moreover, it is also possible to use the film which has a multilayer structure as a base film. For example, a film in which paper or cellophane is bonded to a polyester film or a polyamide film.

  In addition, when a film having a gas barrier property is used as the base film and the contents are accommodated in a room without a spout, the gas that permeates through the spout and enters and is blocked by the partition seal wire, The shelf life of things can be improved. For example, as can be seen from the examples and comparative examples described later, even when this package is subjected to retort treatment, the oxygen concentration in the room without spout is hardly increased, and the storability of the contents can be improved.

  As the base film having a gas barrier property, an oxygen barrier film, a water vapor barrier film, or a film that blocks both oxygen and water vapor can be used. In order to prevent oxidation of the contents, a film having an oxygen barrier property is used. Is preferably used. As such a base film, a film having a polyvinylidene chloride resin layer, a polyvinyl alcohol resin layer, an ethylene-vinyl alcohol copolymer layer, a metal foil, a metal vapor deposition layer, or an inorganic vapor deposition layer in its layer structure. Can be used. Examples of the inorganic vapor deposition layer include a silicon oxide vapor deposition layer and an aluminum oxide vapor deposition layer. The base film may be a single layer or a multilayer film, but when a multilayer film is used as the base film, an epoxy adhesive, a urethane adhesive, a polyethyleneimine anchor coat agent, etc. It is possible to laminate them.

  In addition, the method of forming the division | segmentation seal line which is easy to peel is well-known. For example, the partition seal line can be easily peeled off by heat sealing using a front side film or a back side film coated with an easy release agent at the site. Or when heat-sealing a front side film and a back side film, the division seal line | wire which can be peeled easily can also be formed by controlling a heat seal pressure and heat seal temperature. As described above, even if an error in the bag making process occurs, the influence on the ease of separation of the partition seal line is very small.

  Moreover, as a spout, any material can be used as long as it can be heat-sealed to the sealant layer of the front film or the back film. It may be composed of a resin composition in which a plurality of materials are mixed, or may be a spout formed by stacking different materials in layers.

Example 1
The two-chamber package shown in FIG. 1 was manufactured as Example 1 as follows.

That is, a laminated film in which a sealant layer was laminated on a base film was used as the front film 11 and the back film 12. The base film is a film having a barrier property against both oxygen gas and water vapor, and is a film (thickness 13 μm) in which a vapor deposition layer of aluminum oxide is provided on a polyester film. Moreover, as a sealant layer, it is an unstretched polypropylene film (RXC22 by Mitsui Chemicals Tosero Co., Ltd., thickness 70 micrometers). And these base film and sealant layer were bonded together through the adhesive for dry lamination (A525 by Mitsui Chemicals, Inc.).

  Then, a part of the front film 11 is bent to form a knob 1x on the outer side, and the back film 12 is bent similarly to form a knob 1x, and the positions of both the knobs 1x and 1x coincide with each other. In this way, the films 11 and 12 are overlapped, and a spout is interposed between the films on the top, and heat sealing is performed at the positions of the side seal lines 1a and 1b, the top seal line 1c, and the partition seal line 1y. A packaging bag was produced. The partition seal line 1y was formed by aligning the knobs 1x and 1x so that they were positioned at the approximate center of the partition seal line 1y. In addition, by relaxing the heat seal condition of the partition seal line 1y, the partition seal line 1y was configured to be easily peeled.

  This packaging bag has a room (room A) in which the contents cannot be filled in a portion surrounded by the both-side seal lines 1a and 1b, the top seal line 1c, and the partition seal line 1y. On the other hand, the bottom of the packaging bag is open, and another room (B room) is provided between the partition seal line 1y and the bottom opening.

  Therefore, the packaging bag was turned upside down, filled with 200 ml of ultrapure water from the bottom opening, and then sealed by providing a bottom seal line 1d to produce a two-chamber package.

(Example 2)
As a base film for the front film 11 and the back film 12, the film (thickness 13 μm) provided with a vapor deposition layer of aluminum oxide on a polyester film, and further a polyamide film (Kojin Co., Ltd.) as a pinhole-resistant and impact-resistant layer. A two-chamber package was produced in the same manner as in Example 1 except that a laminated film bonded with Bonyl W (thickness 15 μm) was used, and Example 2 was obtained.

  The film having a barrier property and the polyamide film were bonded together via an adhesive for dry lamination (A525 manufactured by Mitsui Chemicals, Inc.).

(Comparative Example 1)
As the front side film 11 and the back side film 12, the same film as in Example 1 is used, both the films 11 and 12 are overlapped, and a spout is interposed between the two films on the top part, and both side seal lines and the top part are provided. A packaging bag was manufactured by heat sealing at the position of the seal line. Neither the knob 1x nor the partition seal line 1y is provided in the packaging bag.

  Therefore, the packaging bag was turned upside down, filled with 200 ml of ultrapure water from the bottom opening, and then sealed by providing a bottom seal line, thereby producing a one-chamber packaging body in which the inside was not partitioned.

(Comparative Example 2)
As a base film for the front film 11 and the back film 12, the film (thickness 13 μm) provided with a vapor deposition layer of aluminum oxide on a polyester film, and further a polyamide film (Kojin Co., Ltd.) as a pinhole-resistant and impact-resistant layer. A one-chamber package was produced in the same manner as in Comparative Example 1 except that a laminated film on which Bonile W (thickness 15 μm) was bonded was used as Comparative Example 2.

(Evaluation)
First, for the two-chamber package of Examples 1 and 2, the section seal line 1y was peeled off by picking the tabs 1x and 1x of the front film 11 and the back film 12 with fingers of both hands and pulling them in opposite directions. . In both Example 1 and Example 2, the partition seal line 1y was first peeled at its center portion, and the peeled portion spread to the periphery as the pulling force was increased. Moreover, when Example 1 and Example 2 were compared, although both had some strength in the force required for peeling, all were able to peel the division seal line 1y easily.

  From this result, it can be confirmed that even if there is some variation in the peel strength of the partition seal line 1y, it is easy to peel off the partition seal line 1y, and the spread of the peeled portion can be controlled according to the pulling strength. It was.

  Next, as a precaution, the packaging bodies of Examples 1 and 2 and Comparative Examples 1 and 2 were retorted at 125 ° C. for 40 minutes, and after removing ultrapure water, the oxygen permeability was reduced. Was measured. The retort treatment apparatus is RCS-40RTG manufactured by Nisaka Manufacturing Co., Ltd. Further, in Examples 1 and 2, the oxygen permeability measurement target site is attached to the room surrounded by the both-side seal lines 1a and 1b, the partition seal line 1y, and the bottom seal line 1d, that is, the spout 13. It is a room surrounded by the front film 11 and the back film 12 (B room in FIG. 1), and in Comparative Examples 1 and 2, a room containing ultrapure water, that is, a spout It is a room where is attached.

  The results are shown in Table 1. In Table 1, “barrier film (12 μm)” indicates a film (thickness 12 μm) in which a vapor deposition layer of aluminum oxide is provided on a polyester film. Further, “CPP 70 μm” represents an unstretched polypropylene film (RXC22 manufactured by Mitsui Chemicals, Inc., thickness 70 μm). “Ny15 μm” is a polyamide film (Konjin Co., Ltd. Bonil W, thickness 15 μm).

From this result, when the spout 13 is not attached by the partition seal line 1y and the entire room is surrounded by the front film 11 and the back film 12 (B room in FIG. 1), the retorting process is performed. It can be seen that the amount of oxygen gas entering the room (the room B in FIG. 1) from the outside air can be reduced even after severe processing. For this reason, when the contents are accommodated in this room, it can be reasonably expected that the storage stability thereof is enhanced.

1 Two-chamber package 11 Front side film 12 Back side film 13 Spout 1x Knob piece 1y Section seal line

Claims (3)

Two chambers comprising a front side film and a back side film, sealing the inside, and sealing the front side film and the back side film to each other to provide a partition seal line, and partitioning the interior into two chambers by the partition seal line In the package,
By bending the front film and the back film at the position of the partition seal line, a pair of knobs protruding in the outer direction of the package are provided, and the partition seal line is configured to be easily peeled off. A two-chamber package.   The two-chamber package according to claim 1, wherein the front film and the back film have gas barrier properties.   The two-chamber package according to claim 1 or 2, wherein a spout is provided on one of the two chambers.