JP2011025944A - Self-standing multi-cell packaging bag, and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-standing multi-cell packaging bag capable of preserving contents of different kinds into a plurality of cells formed by partitioning the inside of the bag so that each content is separated immediately before it is used, and capable of ensuring the good self-standing property, and a method for manufacturing the same. <P>SOLUTION: The self-standing multi-cell packaging bag having a plurality of cells formed of a flexible film includes: a pair of opposing flat parts constituting front and rear sides of the bag; a bottom part having a gusset shape in which ridge parts and valley parts are alternately formed, and the number of the ridge parts is larger by one than that of the valley parts; and at least one partition part which is arranged between the pair of flat parts and substantially parallel to the flat parts, with its lower end being located in the valley part of the bottom part to partition the cells in the packaging bag. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a self-supporting multi-chamber packaging bag having a plurality of small chambers inside the bag, and a method for manufacturing the same.

  Conventionally, if different types of contents are pre-mixed in one bag, the contents will be separated until just before use for contents that change in the state of the contents over time. It is preferable to store it in such a state, and a multi-chamber packaging bag having a plurality of small chambers (multi-chambers) has been proposed as a bag suitable for filling such contents.

  Various improvements have been made in the technical field of multi-chamber packaging bags. For example, in Patent Document 1, a main storage chamber and a sub storage chamber connectable to the main storage chamber, and a main storage chamber and a sub storage chamber are isolated. A multi-chamber pouch having a partition part made of a peelable seal part or the like is disclosed. It is described that the multi-chamber pouch has a function of opening the partition portion by applying pressure during use and mixing the contents in the pouch.

  Further, FIG. 10 of Patent Document 1 describes an embodiment in which contents are filled in a multi-chamber pouch having a gusset portion on the bottom surface. Although it is described in FIG. 10 that the pouch is made self-supporting when the contents are filled, the sub storage chamber 2 is formed by extending the side wall of the main storage chamber 3 constituting the pouch body outward. When the sub-chamber 2 is filled with contents, it is strongly predicted that the independence becomes unstable due to the weight of the contents.

Japanese Patent Laid-Open No. 11-227841

  The object of the present invention is to store different types of contents in a plurality of compartments provided by partitioning the inside of the bag in a state in which the contents are isolated until just before use, and to provide good self-supporting stability. It is providing the self-supporting multi-chamber packaging bag which can be ensured, and its manufacturing method.

  The present inventors have intensively studied to achieve the above object, and by arranging a partition portion that partitions the chambers in the packaging bag at the bottom of the gusset shape, the small chambers are juxtaposed in the front-rear direction of the bag, It was found that each content can be stored in an isolated state until just before use, and good self-supporting stability can be secured, and the present invention has been completed based on these findings.

That is, the first self-supporting multi-chamber packaging bag of the present invention is a packaging bag having a plurality of small chambers formed of a flexible film,
A pair of opposed flat portions constituting the front side and the back side of the bag, a bottom portion having a gusset shape,
It has at least one partition part which is arranged substantially parallel to the plane part between the pair of plane parts, and whose lower end part is located at the bottom part and partitions the small chambers in the packaging bag. It is a self-supporting multi-chamber packaging bag.

The second self-supporting multi-chamber packaging bag of the present invention is a packaging bag having a plurality of small chambers formed of a flexible film,
A pair of opposing flat portions constituting the front and back sides of the bag;
A bottom portion having a gusset shape in which peaks and valleys are alternately formed, and the number of peaks is one more than the number of valleys;
Between the pair of flat portions, at least one partition portion that is disposed substantially parallel to the flat portion and that has a lower end portion located in a trough portion of the bottom portion and partitions the small chambers in the packaging bag. This is a self-supporting multi-chamber packaging bag.

  In the second self-supporting multi-chamber packaging bag of the present invention, it is preferable that a lower end portion of the bottom valley portion is located above a lower end portion of the flat portion.

  In the first and second self-supporting multi-chamber packaging bags of the present invention, the upper end portions of the partition portions are positioned at the same height as the upper end portions of the pair of plane portions, and the upper ends of the pair of plane portions. It can be set as the form which is inserted | pinched between the parts and integrated.

  The first and second self-supporting multi-chamber packaging bags of the present invention include a small chamber having an upper end portion of the flat portion as an upper end sealing portion, and a lower position than the upper end portion of the flat portion as an upper end sealing portion. It can be set as the form which has the other small chamber to do.

  In the first and second self-supporting multi-chamber packaging bags of the present invention, the sealing portion at the upper end of the other small chamber may be a sealing portion by a peelable seal.

  In the first and second self-supporting multi-chamber packaging bags of the present invention, between the sealing position of the upper end of each small chamber and from the height position below the lowest sealing position of each of the small chambers. Opening assisting means may be provided at one or more selected positions.

  In the first and second self-supporting multi-chamber packaging bags of the present invention, it is preferable that a pouring tool is attached to the self-supporting multi-chamber packaging bag.

  The 1st and 2nd content filling body of this invention is a content filling body by which the above-mentioned self-supporting multi-chamber packaging bag of this invention is filled.

The first method for producing the self-supporting multi-chamber packaging bag of the present invention is as follows.
A step of preparing a pair of members for a flat part, a member for a bottom part, and a member for a partition part, all formed of a flexible film;
Folding the bottom member, forming crests and troughs alternately, and making the number of crests one more than the number of troughs,
Sealing the end of the partition member and the valley of the bottom member to form an integrated product of the partition member and the bottom member;
The integrated product is sandwiched between the pair of flat part members to form an overlapped body, and an end when the self-supporting multi-chamber packaging bag is formed in a portion where the members of the stacked body are not sealed. A step of sealing an edge portion other than an edge portion serving as a filling port in a portion serving as an edge portion;
It is the manufacturing method of the self-supporting multi-chamber packaging bag characterized by including.

The second method for producing the self-supporting multi-chamber packaging bag of the present invention is as follows.
A step of preparing a series of members constituting a pair of flat portions and a bottom portion, and a partition member, both of which are formed of a flexible film,
A step of bending a boundary between a portion to be a flat portion and a portion to be a bottom portion of the series member to partition a portion to be a pair of plane portions and a portion to be a bottom portion;
Folding the portion to be the bottom of the series member, alternately forming peaks and valleys, and forming a gusset shape in which the number of peaks is one more than the number of valleys;
Sealing the end of the partition member and the trough of the bottom part of the series member to form an integrated product of the partition member and the series member;
The step of sealing the edge portion other than the edge portion serving as the filling port in the portion serving as the edge portion when the self-supporting multi-chamber packaging bag is formed in the portion where each member of the integrated product is not sealed ,
It is the manufacturing method of the self-supporting multi-chamber packaging bag characterized by including.

  According to the present invention as described above, different types of contents can be stored in a plurality of compartments provided by partitioning the inside of the bag in a state in which the contents are isolated until just before use, and in a good self-supporting manner. A self-supporting multi-chamber packaging bag capable of ensuring stability and a method for manufacturing the same are provided.

FIG. 1 is a perspective view showing the positional relationship of members constituting the self-supporting multi-chamber packaging bag according to the embodiment of the present invention. 2A to 2C are side cross-sectional views showing variations of the bottom gusset shape. It is the perspective view which showed the site | part sealed in each lower end part of the plane part shown in FIG. 1, a partition part, and the bottom part by hatching. FIG. 4A is a side sectional view showing the arrangement of the lower end portion and the bottom portion of the partition portion and the arrangement of the lower end portion and the bottom portion of the flat portion in the second self-supporting multi-chamber packaging bag of the present invention. FIG. 4B is a side sectional view showing the arrangement of the lower end portion and the bottom portion of the flat portion in a conventional self-supporting single-chamber packaging bag having no partition portion. 5A to 5D are views showing the arrangement of the lower end portion 3b and the bottom portion 2 of the partition portion and the arrangement of the lower end portion 1b and the bottom portion 2 of the flat portion in the second self-supporting multi-chamber packaging bag of the present invention. FIG. 6A and 6B show the arrangement of the lower end portion 3b and the bottom portion 2 of the partition portion and the arrangement of the lower end portion 1b and the bottom portion 2 of the flat portion in the first self-supporting multi-chamber packaging bag of the present invention. FIG. FIG. 7 is a perspective view showing the self-supporting multi-chamber packaging bag 101 according to the first embodiment of the present invention, and is an embodiment that takes the arrangement and sealing state of each member shown in FIGS. 1 and 3. . FIG. 8 shows an embodiment in which the four corners on the bottom side of the self-supporting multi-chamber packaging bag 101 are sealed in an arc shape. FIG. 9A is a perspective view showing a content filling body 102 according to the second embodiment of the present invention in which the self-supporting multi-chamber packaging bag 101 according to the first embodiment of the present invention is filled with the content. FIG. 9B is a cross-sectional view taken along the line AA in FIG. 9A, and FIG. 9C is a front view of FIG. 9A from the bottom 2 side. FIG. 10 is a perspective view showing a self-supporting multi-chamber packaging bag 103 according to the third embodiment of the present invention. FIG. 11A is a perspective view showing a content filling body 104 according to the fourth embodiment of the present invention in which the self-supporting multi-chamber packaging bag 103 according to the third embodiment of the present invention is filled with the content. 11B1 and 11B2 are variations of the AA cross-sectional view of FIG. 11A. FIG. 12A is a perspective view showing a self-supporting multi-chamber packaging bag 105 according to the fifth embodiment of the present invention, and FIG. 12B is a cross-sectional view taken along line AA in FIG. 12A. FIG. 13A is a perspective view showing a self-supporting multi-chamber packaging bag 106 according to a sixth embodiment of the present invention, and FIGS. 13B1 and 13B2 are variations of the AA cross-sectional view of FIG. 13A. FIG. 14 is a cross-sectional view showing a content filling body in which the self-supporting multi-chamber packaging bag 107 according to the seventh embodiment of the present invention is filled with the content. FIG. 15 is a cross-sectional view showing a content filling body obtained by filling the self-supporting multi-chamber packaging bag 108 according to the eighth embodiment of the present invention with the content. FIG. 16 is a cross-sectional view showing a content filling body in which the self-supporting multi-chamber packaging bag 109 according to the ninth embodiment of the present invention is filled with the content. FIG. 17 is a cross-sectional view showing a content filling body in which the self-supporting multi-chamber packaging bag 110 according to the tenth embodiment of the present invention is filled with the content. FIG. 18 is a cross-sectional view showing a content filling body obtained by filling the self-supporting multi-chamber packaging bag 111 according to the eleventh embodiment of the present invention with the content. FIG. 19 is a cross-sectional view showing a content filling body formed by filling the self-supporting multi-chamber packaging bag 112 according to the twelfth embodiment of the present invention. FIG. 20A is a perspective view showing a content filling body in which the self-supporting multi-chamber packaging bag 113 according to the thirteenth embodiment of the present invention is filled with the content, and FIG. 20B is an AA of FIG. 20A. It is sectional drawing. 21A to 21C are diagrams illustrating the first manufacturing method. 21D to 21E are diagrams illustrating the first manufacturing method. 21F to 21G are diagrams illustrating the first manufacturing method. 22A and 22B are diagrams illustrating a second manufacturing method. 22C to 22D are diagrams illustrating the second manufacturing method. 22E to 22F are diagrams illustrating the second manufacturing method.

The first self-supporting multi-chamber packaging bag of the present invention is a packaging bag having a plurality of small chambers formed of a flexible film,
A pair of opposed flat portions constituting the front side and the back side of the bag, a bottom portion having a gusset shape,
It has at least one partition part which is arranged substantially parallel to the plane part between the pair of plane parts, and whose lower end part is located at the bottom part and partitions the small chambers in the packaging bag. It is what.

The second self-supporting multi-chamber packaging bag of the present invention is a packaging bag having a plurality of small chambers formed of a flexible film,
A pair of opposing flat portions constituting the front and back sides of the bag;
A bottom portion having a gusset shape in which peaks and valleys are alternately formed, and the number of peaks is one more than the number of valleys;
Between the pair of flat portions, at least one partition portion that is disposed substantially parallel to the flat portion and that has a lower end portion located in a trough portion of the bottom portion and partitions the small chambers in the packaging bag. It is characterized by this.

  If the flexible film which comprises the plane part 1, the bottom part 2, and the partition part 3 of the self-supporting multi-chamber packaging bag concerning embodiment of this invention is generally a flexible film used for manufacture of a bag, especially It is not limited, For example, a single layer film may be sufficient and the laminated film which consists of 3 layers of the base material layer used as an outermost layer, an intermediate | middle layer, and the sealant layer used as an innermost layer may be sufficient.

  The base material layer is preferably a layer that forms the outermost layer of the bag and has functions such as printability, pinhole resistance, and impact resistance. Examples of the material for the base material layer include uniaxial or biaxially stretched films such as polyethylene terephthalate, polypropylene, polyamide, and ethylene vinyl alcohol copolymer, and laminates of these stretched films.

  When these stretched films are required to have oxygen barrier properties and water vapor barrier properties as bags, examples of the material of the base material layer include metals such as aluminum, and aluminum oxide and silicon oxide. A vapor-deposited film in which an inorganic oxide is vapor-deposited; a coat film in which polyvinylidene chloride, polyacrylic acid-based resin, or the like is coated (barrier coat); Moreover, paper, cellophane, etc. can also be used.

  The intermediate layer is preferably a layer having functions such as oxygen barrier properties, water vapor barrier properties, and tearability. As the material of the intermediate layer, when oxygen barrier properties and water vapor barrier properties are required for the use of the bag, for example, metal foil such as aluminum foil; metal such as aluminum, aluminum oxide, and silicon oxide A film on which an inorganic oxide such as a film is deposited; a film on which a polyvinylidene chloride, a polyacrylic acid resin, or the like is coated (barrier coat);

  The sealant layer is preferably a layer that forms the innermost layer of the bag and can be heat sealed. As the material of the sealant layer, for example, an unstretched film made of low density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene vinyl acetate copolymer, ionomer resin, or the like, or these resins are extruded in layers. Things.

  The method of laminating these layers to form a laminated film is not particularly limited as long as it is a laminating method generally used for forming a laminated film. For example, the laminated film is formed by dry laminating using an adhesive. It may be a method, or a method of forming a laminated film by an extrusion laminating method using a thermoadhesive resin. Moreover, the method of forming a laminated film by the other lamination method may be sufficient.

Moreover, it is preferable that the material which comprises the innermost layer of the plane part 1 and the bottom part 2 is a heat sealable homogeneous material from a viewpoint of bonding each by heat sealing.
Here, the “heat-sealable homogenous material” refers to a material that has the property of being thermally fused by heating and capable of being joined.
Furthermore, in the partition part 3, as shown in FIG. 1, when arrange | positioning so that the lower end part 3b of a partition part may be pinched | interposed into the trough part 5 of the bottom part 2, the upper end part 3t of a partition part may be a pair of plane parts 1, 1, i.e., when the valley portion 5 of the bottom portion 2 or the pair of plane portions 1, 1 are attached to both surfaces of the partition portion 3, both outermost layers of the partition portion 3 are both A layer capable of heat sealing is preferred.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, centering on the second self-supporting multi-chamber packaging bag of the present invention.
A first embodiment of the present invention will be described with reference to FIGS. 1 to 5, and a perspective view thereof is shown in FIG.
FIG. 1 is a perspective view showing a positional relationship between members (a flat surface portion 1, a bottom portion 2, and a partition portion 3) that constitute a self-supporting multi-chamber packaging bag according to an embodiment of the present invention.

  As shown in FIG. 1, the self-supporting multi-chamber packaging bag of the present invention includes a pair of opposed flat portions 1, 1 constituting the front and rear sides of the bag, a bottom portion 2 having a gusset shape, and a pair of flat portions. 1, at least one partition part 3 which is arranged substantially parallel to the plane part and whose lower end part is located in the valley part 5 of the bottom part 2 and partitions the small chambers in the packaging bag. The Each member constituting the bag is formed of a flexible film, and can be folded or folded.

In the example shown in FIG. 1, the pair of plane portions 1, 1, the bottom portion 2, and the partition portion 3 are independent members, but one or more flexible members in which two or more of these members have a continuous developed shape. The film may be bent and used.
For example, a flexible film having a developed shape in which a pair of plane portions 1 and 1 and a bottom portion 2 are continuously bent is used to divide a portion that becomes a pair of plane portions 1 and 1 and a portion that becomes a bottom portion 2 Can be used.

The bottom 2 has a gusset shape in which peaks 4 and valleys 5 are alternately formed, and the number of peaks 4 is one more than the number of valleys 5.
Here, the “mountain portion” refers to a fold line portion that can be folded in an inverted V-shaped cross section toward the inside of the bag or the vicinity thereof, while the “valley portion” refers to the outside of the bag. The fold line portion that can be folded back into a V-shaped cross section or the vicinity thereof.

2A to 2C are side cross-sectional views showing variations of the gusset shape of the bottom 2.
As a gusset shape, for example, as shown in FIG. 2A, one having a valley portion 5 between a pair of ridge portions 4 and having a gusset having an M-shaped cross section can be exemplified. The example is also M-shaped in cross section.

In addition to FIG. 2A, as shown in FIG. 2B and FIG. 2C, the crests 4 and the troughs 5 are alternately formed, and two troughs 5 are formed so that the folding at both ends becomes the crests 4. You may have it above.
In addition, the height of the peak part 4 and / or the trough part 5 is changed suitably.

  As shown in FIG. 2B and FIG. 2C, in the case of having two or more valley portions 5, each valley portion 5 may be provided with one partition portion 3, or a certain one Two or more partitions 3 may be provided for the valley 5. When two or more partitions 3 are used, three or more small chambers can be juxtaposed in the front-rear direction of the bag.

  For example, when it is desired to arrange four small chambers in the front-rear direction of the bag, the gusset shape shown in FIG. 2C may be selected, and one partition portion 3 may be provided in each of the three valley portions 5. The gusset shape shown in 2B may be selected, and one of the two troughs may be provided with one partition 3 and the other trough may be provided with two partitions 3. However, the increase in the number of valleys means that the area when the bottom 2 is expanded on a plane is increased and wrinkles are likely to occur. Therefore, when a plurality of partition parts 3 are provided, one valley 5 It is preferable to provide a plurality of partition portions 3 on the surface.

  The bottom 2 can be formed by bending a single flexible film into the gusset shape as described above, and joining the edges of the film using two or more flexible films. Therefore, it can also be formed in the gusset shape as described above.

  In FIG. 3, as the bottom portion 2, one trough portion 5 is provided between a pair of mountain portions 4, a gusset having an M-shaped cross section is provided, and one partition portion 3 is provided in one trough portion 5. An example will be described.

FIG. 3 is a perspective view showing, by hatching, portions to be sealed at the lower end portions of the flat portion 1, the partition portion 3, and the bottom portion 2 shown in FIG.
Each member is sealed at the opposite end edge between the members in the illustrated arrangement.

The members of the perspective view shown in FIG. 3 include the lower end 3b of the partition portion along the lower end portion 3b of the partition portion in each member of the plane portion 1, the bottom portion 2, and the partition portion 3 shown in FIG. The lower end edge seal portion 6 of the partition portion where the bottom valley portion 5 is sealed, and the flat portion where the lower end portion 1b of the flat portion and the lower end portion 2b of the bottom portion are sealed along the lower end portion 1b of the flat portion. Each member is connected by the lower edge seal portion 7.
Here, “seal” includes all of heat sealing by heat and pressure and adhesion by an adhesive or the like. The same meaning is used in the following.

  In the example shown in FIG. 3, the height of the upper end portion 3t of the partition portion is the same as the height of the upper end portion 1t of the plane portion, and therefore the upper end portion 3t of the partition portion is the upper end portion 1t of the pair of plane portions. , 1t will be sealed. However, when the height of the upper end portion 3t of the partition portion is lower than the height of the upper end portion 1t of the plane portion, the upper end portion 3t of the partition portion is sealed at a position below the upper end portion 1t of the plane portion. It will be. In this case, the upper end 3t of the partition portion is sealed between the opposing inner surface of the flat surface portion or the opposing surface of another adjacent partition portion 3.

  FIG. 4A is a side sectional view showing the arrangement of the lower end portion 3b and the bottom portion 2 of the partition portion and the arrangement of the lower end portion 1b and the bottom portion 2 of the flat portion in the second self-supporting multi-chamber packaging bag of the present invention. FIG. FIG. 4B is a side cross-sectional view showing the arrangement of the lower end portion 1b and the bottom portion 2 of the flat portion in a conventional self-supporting single-chamber packaging bag that does not have the partition portion 3.

4A and FIGS. 5A to 5D described later, the partition portion 3 is disposed between the pair of plane portions 1 and 1 substantially in parallel with the plane portion, and the lower end portion 3b is a valley of the bottom portion 2. Arranged in part 5.
Here, “the lower end portion 3b of the partition portion is disposed in the valley portion 5 of the bottom portion 2” means that when the lower end portion 3b of the partition portion or the vicinity of the lower end portion 3b of the partition portion is bent, the bent base portion 3b1. Indicates that the bent base 3b1 is not in direct contact with the polygonal line of the valley part 5, but is also located in the vicinity of the valley part 5. .

In the bottom 2 shown in FIG. 4A, the crests 4 and the troughs 5 are alternately formed, and the number of crests 4 is increased because the number of crests 4 is two and the number of troughs 5 is one. Compared with the bottom part 2 shown in FIG. 4B having only one, the area when the bottom part is developed in a plane is increased. That is, the use area of the flexible film used for forming the bottom is wide.
In FIG. 4A and FIG. 4B, in the state folded so that the bottom part 2 folded via each folding line part may exist between a pair of plane parts 1 and 1, from the top part of the peak part 4 of the bottom part to the bottom part. When the height h to the lower end portion 2b is the same, the area when the bottom portion shown in FIG. 4A is expanded in a plane is approximately twice that when the bottom portion shown in FIG. 4B is expanded in a plane. Become.

  When the contents of the small self-supporting single-chamber packaging bag having the side cross-sectional view shown in FIG. 4B are filled with the contents, the opening shape of the bottom portion is the side edge seal of the flat portion at both side edges. Since the restriction of the portion 8 restricts the spread of the bottom portion, the shape of the bottom portion in the other region is a substantially constant flat shape.

  On the other hand, when each small chamber of the self-supporting multi-chamber packaging bag of the present invention having the side sectional view shown in FIG. 4A is filled with the contents, the use area of the flexible film used for forming the bottom portion is as follows. Since it is wide, the bottom portion does not fully expand, and the opening shape of the bottom portion is not a constant shape as shown in FIG. 4B, and becomes an indefinite shape. Therefore, the bottom portion of FIG. Is likely to occur. When the amount of wrinkles increases, the contents tend to remain between the wrinkles, which may cause pinholes due to film rubbing, etc., and problems such as poor appearance when viewed from the bottom 2 side. There is.

  As a result of studying the problems caused by wrinkles as described above, the present inventors have turned back through the valley portion 5 of the bottom portion 2 as shown in FIGS. 5A, 5C, and 5D. The height of the lower end portion 5b of the formed valley portion is not low enough to reach the vicinity of the lower end portion 1b of the flat surface portion, and is provided above the lower end portion 1b of the flat surface portion. I found that the problem is less likely to occur.

  5A to 5D are views showing the arrangement of the lower end portion 3b and the bottom portion 2 of the partition portion and the arrangement of the lower end portion 1b and the bottom portion 2 of the flat portion in the second self-supporting multi-chamber packaging bag of the present invention. FIG.

  In addition, the present inventors have found that the bottom portion 2 is folded between the pair of flat surface portions 1 and 1 so that the bottom portion 2 is folded via each fold line portion, and the bottom portion of the crest portion 4 from the top portion to the valley portion. When the height to the lower end part 5b of the part is H, the upper end position of 6t at the time of sealing is preferably set to a position of 0.05H to 0.95H from the upper end edge of the folded bottom part, and 0.05H to 0 It was found that the position of .9H is more preferable.

Here, “when sealing” refers to a boundary region between a sealed portion and an unsealed portion. Further, the “upper edge of the folded bottom” refers to a position that coincides with the top of the crest 4 of the bottom 2 that is folded through each folding line.
By setting the upper end position of 6t at the time of sealing within the above-mentioned preferable range, when the contents are filled, the opening shape of the bottom portion becomes a constant shape, and the generation of wrinkles at the bottom portion is prevented, and the self-supporting stability is also improved. To do.

  Furthermore, if the upper end position of 6t at the time of sealing can be made into the said preferable range, the present inventors will set the height of the lower end part 5b of a trough part, and the lower end part 1b of a plane part, as FIG. 5B shows. It was found that various problems caused by the wrinkles are less likely to occur even when the height is as low as possible.

In the example of FIG. 5A, the lower end portion 3 b of the partition portion is sandwiched between the valley portions 5, and both surfaces of the lower end portion 3 b of the partition portion and the surfaces facing the vicinity of the broken line of the valley portion 5 are the lower end edge seals of the partition portion. The upper end position of the seal 6t when sealed at the portion 6 is 0.3H from the upper end edge of the folded bottom.
In the example of FIG. 5A, the lower end portion 5b of the valley portion is positioned above the lower end portion 1b of the flat surface portion, and the upper end position of the sealing 6t is within the preferable range to fill the contents. At that time, the opening shape of the bottom portion becomes a constant shape, so that the generation of wrinkles at the bottom portion is prevented and the self-supporting stability is improved.

In the example of FIG. 5B, the lower end portion 3 b of the partition portion is sandwiched between the valley portions 5, and both surfaces of the lower end portion 3 b of the partition portion and the surfaces facing the vicinity of the broken line of the valley portion 5 are the lower end edge seals of the partition portion. The upper end position of the seal 6t when sealed at the portion 6 is 0.5H from the upper end edge of the folded bottom.
In the example of FIG. 5B, unlike the example of FIG. 5A, the height of the lower end portion 5 b of the valley portion is set to be the same as the height of the lower end portion 1 b of the flat portion.
Even in the case where the height of the lower end portion 5b of the valley is matched with the same low position as the lower end portion 1b of the flat portion as in the example of FIG. By being inside, when the contents are filled, the opening shape of the bottom part becomes a constant shape, the generation of wrinkles at the bottom part is prevented, and the self-supporting stability is improved.
In the example of FIG. 5B, in addition to the lower end 1b of the flat portion being grounded, the lower end 5b of the valley portion is also grounded, so that the self-supporting stability is further improved.

  In the example of FIG. 5C, the bent base portion 3 b 1 in which the vicinity of the lower end portion 3 b of the partition portion is bent is in contact with the fold line of the valley portion 5, and the faces that are opposite to each other between the bent portion and the fold line portion of the valley portion 5 are The upper end position of the sealing portion 6t is sealed at the lower end edge seal portion 6 of the partition portion, and is 0.2H from the upper end edge of the folded bottom portion.

  In the example of FIG. 5D, one surface of the lower end portion 5b of the partition portion and the surface opposite to the vicinity of the fold line of the valley portion 5 are sealed at the lower end edge seal portion 6 of the partition portion, and the upper end position of the seal 6t Is 0.2H from the top edge of the folded bottom.

  In the example of FIGS. 5C and 5D, one side of the lower end 3b of the partition part is not sealed with the inner surface near the polygonal line of the valley part 5, and therefore, when sealing, 6t has a lower end in addition to the upper end. become.

In the example of FIGS. 5A to 5D, the present inventors set the upper end position of 6t at the time of sealing within a preferable range of 0.05H to 0.95H from the upper end edge of the folded bottom portion, so that the bottom 2 9C, as shown in FIG. 9C, it was found that the shape of the valley portion 5 is bent into an S shape in front view on the bottom portion 2 side.
When the shape of the valley portion 5 is bent into an S-shape, the bottom gussets of the plurality of small chambers arranged in parallel in the front-rear direction of the bag are evenly opened, and generation of wrinkles at the bottom portion is prevented. It becomes difficult to occur.

Furthermore, the present inventors also bent the lower part 3b of the partition part into the S shape at the same time as the valley part 5 is bent into the S shape, and the shape of the upper end part 3t of the partition part is the same as the shape of the valley part 5. It has been found that it also bends into an S shape when viewed from the front side on the opening side.
Since the shape of the upper end portion 3t of the partition portion is bent in an S shape, the openings of the plurality of small chambers arranged in parallel in the front-rear direction of the bag are evenly and sufficiently opened, and the openings from the openings of the plurality of small chambers Filling the contents becomes easy.

  6A and 6B show the arrangement of the lower end portion 3b and the bottom portion 2 of the partition portion and the arrangement of the lower end portion 1b and the bottom portion 2 of the flat portion in the first self-supporting multi-chamber packaging bag of the present invention. FIG.

  The example of FIG. 6A is a bottom part of a gusset shape that does not have the valley part 5 but has one peak part 4 as the bottom part, and the bent base part 3b1 in which the vicinity of the lower end part 3b of the partition part is bent is the peak part 4. The opposing surfaces of the bent portion of the partition portion and the bottom portion 2 are directly sealed with each other at the lower edge seal portion 6 of the partition portion, and the partition portion 3 includes a pair of opposed flat portions 1, 1. 1 in the front-rear direction substantially central portion between 1 and substantially parallel to the plane portion.

  The example of FIG. 6B is a bottom part of the gusset shape which does not have the trough part 5 but has one peak part 4 as a bottom part, the lower end part 3b of a partition part touches the broken line of the peak part 4, and the lower end part of a partition part The bent base portion 3b1 bent around 3b is located in the vicinity of the peak portion 4, and the opposed surfaces of the bent portion of the partition portion and the bottom portion 2 are sealed at the lower end edge seal portion 6 of the partition portion. Thus, the partition portion 3 is disposed substantially parallel to the plane portion at a position close to one of the plane portions between the pair of opposed plane portions 1 and 1 and far from the other plane portion. .

FIG. 7 is a perspective view showing the self-supporting multi-chamber packaging bag 101 according to the first embodiment of the present invention, and is an embodiment that takes the arrangement and sealing state of each member shown in FIGS. 1 and 3. .
The side edge seal portion 8 of the flat surface portion of the self-supporting multi-chamber packaging bag 101 is a side edge portion 2s of the bottom portion facing the side edge portions 1s, 1s of the pair of flat surface portions of the member shown in FIG. Further, on both surfaces of the partition portion 3, the side edge portions 1s, 1s of the pair of flat portions opposed to the side edge portion 3s of the partition portion and the side edge portion 2s of the bottom portion are sealed.
The self-supporting multi-chamber packaging bag 101 includes the small chambers 9X and 9Y in the front-rear direction of the bag by the lower end edge seal portion 6 of the partition portion, the lower end edge seal portion 7 of the flat portion, and the side edge seal portion 8 of the flat portion. Are arranged side by side.

  In the self-supporting multi-chamber packaging bag of the present invention, from the viewpoint of improving the self-supporting stability by increasing the stability of the leg portion of the bag, as shown in FIG. Is preferably formed.

Reinforcing seal part 10 is a part on the side edge seal part 8 where the side edges 1s, 1s of the front and rear plane parts are not integrated, that is, the part where the bottom part 2 is interposed, It is provided so that the side edge portions 1s and 1s of the flat surface portion on the back side are integrated, and the leg portions are reinforced at both side edge portions of the self-supporting packaging bag.
The reinforcing seal part 10 is not particularly limited as long as it is provided so that the side edges 1s, 1s of the front and rear plane parts are integrated. For example, the bottom part corresponding to the position of the reinforcing seal part 10 is used. 2 has a notch, and the inner surfaces of the front and rear plane portions are sealed by heat sealing or the like, or relative to the inner surface of the front plane portion and the inner surface of the rear plane portion. The surface of the partition part to be sealed may be sealed by heat sealing or the like, and the side edges 1s, 1s of the flat part on the front side and the rear side may be integrated.
In addition, the flexible film constituting the bottom portion 2 may be formed by sealing with an adhesive and integrating the side edges 1s and 1s of the front and rear plane portions. The material of the outermost surface layer facing each other may be a heat-similar homogeneous material, and the side edges 1s, 1s of the front and rear plane portions may be integrated by heat sealing.

The oblique seal portion 13 is placed in the bag under the folded state so that the bottom portion 2 folded via each folding line portion is interposed between the pair of flat surface portions 1 and 1 at the four corner portions on the bottom portion 2 side. The inner surfaces facing each other are sealed in an oblique shape from a predetermined position of the side edge seal portion 8 of the flat portion to a predetermined position of the lower end edge seal portion 7 of the flat portion. Since it becomes easy to open without generating wrinkles in the bottom part 2 when filling with, self-supporting stability can be improved, which is preferable.
The skew seal portion 13 may be sealed in an arc shape as shown in FIG.
In the region sealed in the arc shape shown in FIG. 8, the design is such that several unsealed portions P each having a vertical elliptical shape are appropriately provided.

FIG. 9A is a perspective view showing a content filling body 102 according to the second embodiment of the present invention in which the self-supporting multi-chamber packaging bag 101 according to the first embodiment of the present invention is filled with the content. FIG. 9B is a cross-sectional view taken along the line AA in FIG. 9A, and FIG. 9C is a front view of FIG. 9A from the bottom 2 side.
The cross-sectional view shown in FIG. 9B means a view of the perspective view shown in FIG. 9A cut along the cross-section AA and viewed from the arrow direction.
Hereinafter, the arrows shown in FIGS. 11A, 12A, 13A, and 20A are used in the same meaning as the arrows shown in FIG. 9A.

The content filling body 102 of the present invention is opened in the self-supporting multi-chamber packaging bag 101 shown in FIG. 7 in which the upper end portion 3t of the partition portion is located at the same height as the upper end portions 1t of the pair of flat surface portions. Each of the small chambers 9X and 9Y is filled with different types of contents X and Y from the upper end side, and the upper end portion 3t of the partition portion is sandwiched between the upper end portions 1t of the pair of plane portions. In this embodiment, the upper end portion 1t of each planar portion and the upper end portion 3t of the partition portion are integrated along the upper end portion 3t of the portion, and the bag is sealed in a liquid-tight or air-tight state.
In the content filling body 102, the upper end edges of the opened small chambers 9X and 9Y are sealed at the same time, and the sealed positions of the upper end edges of the respective small chambers 9X and 9Y are in each plane. This corresponds to the position where the upper end 1t of the part is sealed.

FIG. 10 is a perspective view showing a self-supporting multi-chamber packaging bag 103 according to the third embodiment of the present invention.
The self-supporting multi-chamber packaging bag 103 of the present invention is as shown in FIG. 7, in the self-supporting multi-chamber packaging bag 101 in which the upper end portion 3t of the partition portion is located at the same height as the upper end portions 1t of the pair of plane portions. The first embodiment of the present invention, except that the height position of the upper end portion 3t of the partition portion is changed so that the upper end portion 3t of the partition portion is positioned below the upper end portion 1t of the pair of plane portions. It is an embodiment similar to the form.

FIG. 11A is a perspective view showing a content filling body 104 according to the fourth embodiment of the present invention in which the self-supporting multi-chamber packaging bag 103 according to the third embodiment of the present invention is filled with the content. 11B1 and 11B2 are variations of the AA cross-sectional view of FIG. 11A.
In the self-supporting multi-chamber packaging bag 103 shown in FIG. 10, the upper end portion 3t of the partition portion is located at a lower level than the upper end portions 1t of the pair of flat portions. Each of the opened small chambers 9X and 9Y is filled with different types of contents X and Y from the upper end side, and the partition upper end 3t is sandwiched between a pair of opposed flat portions. Along the upper end portion 3t of the section, both surfaces of the upper end portion 3t of the partition portion and the inner surface of the flat portion facing the seal portion are sealed (FIG. 11B1), or one surface of the upper end portion 3t of the partition portion is opposed to it. The inner surface of the flat portion is sealed (FIG. 11B2), and the upper end 1t of each flat portion is sealed along the upper end 1t of the flat portion, so that the upper edge of each small chamber 9X, 9Y is sealed. In the embodiment of the stopped content filling That.

Here, both surfaces or one surface of the upper end portion 3t of the partition portion and the inner surface of each flat surface portion facing it may be sealed with the same seal strength as that of other seal portions, but can be peeled off. A peelable seal portion 12 sealed with a seal strength may be formed.
In the content filling body 104, the position where the upper edge of each of the small chambers 9X, 9Y is sealed with a peelable seal strength is different from the position where the upper end 1t of each planar part is sealed.

  Further, the sealing strength of the peelable seal portion 12 is not particularly limited as long as the peelable seal portion 12 can be easily peeled when the bag filled with the contents is pressed by hand or palm. , Preferably about 5.0 to 15.0 N / 15 mm.

  Here, “N / 15 mm” means the strength required to peel the peelable seal portion 12 having a width of 15 mm in a T shape at room temperature, and the seal strength is measured based on JIS Z 0238: 1998. .

  On the other hand, all the seal strengths of the seal portions other than the peelable seal portion 12 are strong enough to seal the packaging bag and withstand the pressure of the hand or palm stronger than the seal strength of the peelable seal portion 12. It is sealed.

When the seal of the open upper edge of each of the small chambers 9X and 9Y is a peelable seal, the pressure inside the bag rises by pressing with the hand or palm when using the bag, and the pressure is increased in the multiple chambers. It was transmitted to the contents and acted as a peeling force, the peelable seal portion 12 was easily peeled off, and a path through which the contents of one small chamber flowed into the other small chamber was provided and stored in each small chamber Different types of contents can be mixed.
Moreover, the packaging bag of this invention is maintaining the independence of a bag also in the state which the peelable seal | sticker part was destroyed and the filling in a bag united and mixed.

In the self-supporting multi-chamber packaging bag according to the embodiment of the present invention, it is preferable to provide the opening assisting means 14 from the viewpoint of facilitating the opening of the bag with fingers and improving the convenience of the bag.
Although the “notch” is illustrated in FIGS. 9, 11, and 20 as the opening assisting means 14, it is not limited to this. In addition to the “notch”, for example, when provided on the side edge seal portion 8 of the flat portion, shapes such as a rough surface and a scar are typically exemplified. Further, the tape may be arranged on the inner surface of the flat portion so as to cross from the side portion of the packaging bag to the side portion, and the end portion of the tape may have a knob that can be picked from the outer surface.

  Moreover, the position which provides the opening assistance means 14 will not be specifically limited if it is a position which can open each small chamber, respectively. If the height of the sealing position of the upper edge of each chamber is different, the position between the sealing positions of the upper edge of each chamber and the sealing position of the lowest upper edge of each chamber The opening assisting means 14 can be provided at one or more positions arbitrarily selected from the lower height positions.

For example, as illustrated in FIGS. 9 and 11, the upper edge of all the small chambers is sealed at a position lower than the sealing position of the upper end portion 3 t of all the partition portions included in the bag. In the case where the opening assisting means 14 is provided at a height position lower than the position, the contents filled in each small chamber can be taken out all at once.
In addition, as illustrated in FIG. 20, between the positions where the upper edge of each small chamber is sealed and at a height position below the sealed position of the lowest upper edge of each small chamber, When each of the opening assisting means 14 is provided and the opening is sequentially performed from the upper end side of the bag, the contents filled in the respective small chambers can be sequentially taken out.

  In the self-supporting multi-chamber packaging bag according to the embodiment of the present invention, the pouring tool 15 serving as a spout is attached to the bag from the viewpoint of facilitating the removal of the filled contents and improving the convenience of the bag. It may be done.

FIG. 12A is a perspective view showing a self-supporting multi-chamber packaging bag 105 according to the fifth embodiment of the present invention, and FIG. 12B is a cross-sectional view taken along line AA in FIG. 12A.
The self-supporting multi-chamber packaging bag 105 of the present invention is an embodiment in which the pouring tool 15 is attached to each of the small chambers 9X and 9Y in the self-supporting multi-chamber packaging bag 101 shown in FIG. , Y can be dispensed separately.

FIG. 13A is a perspective view showing a self-supporting multi-chamber packaging bag 106 according to a sixth embodiment of the present invention, and FIGS. 13B1 and 13B2 are variations of the AA cross-sectional view of FIG. 13A.
The self-supporting multi-chamber packaging bag 106 of the present invention is an embodiment in which the pouring tool 15 is attached to the upper end portion side of the bag in the self-supporting multi-chamber packaging bag 103 shown in FIG.
When the self-supporting multi-chamber packaging bag 106 shown in FIG. 13A is a peelable seal on both surfaces or one surface of the upper end portion 3t of the partitioning portion and the inner surface of each flat surface portion facing it, Since different types of contents X and Y can be mixed in one bag by pressing with a hand or palm, the mixed contents can be poured out.

The shape of the dispensing tool 15 varies depending on the contents and application, and is not particularly limited.
The dispensing tool 15 can also be used as an application for drinking directly as a mouth. Moreover, when the contents are not used up all at once, a cap having a mechanism for closing the opening of the pouring tool 15 can be provided.

Furthermore, as a pouring tool, it may be used not only for beverages and foods but also in various shapes in various fields, for example, a pouring tool shaped to be closed by pushing or covering a medical rubber stopper. Also good.
The place where the pouring tool is provided is not particularly limited, and for example, an pouring tool that leads to any small chamber in the bag may be attached near the bottom of the packaging bag.

  The contents of the self-supporting multi-chamber packaging bag according to the embodiment of the present invention are not particularly limited. The different types of contents to be filled in the embodiment 101 according to the first embodiment and the embodiment 105 according to the fifth embodiment are preferably used simultaneously without being mixed. For example, a combination of fluid materials such as mustard and ketchup, margarine and jam, a combination of fluid materials such as sugar and cream and solid materials, or a combination of individually packaged solid materials.

  In addition, as the different types of contents to be filled in the embodiment 103 according to the third embodiment and the embodiment 106 according to the sixth embodiment, the contents change over time if mixed beforehand, Since quality deterioration will be caused, what is mixed just before use and what is delicious when mixed just before use are preferable. For example, combinations of fluid substances such as soy milk and a coagulant, medical infusion to be mixed, dressings and sesame or powdered cheese, combinations of fluid substances such as water and tea powder, and solids.

Although the self-supporting multi-chamber packaging bag of the first to sixth embodiments of the invention described so far has two small chambers, in the present invention, the number of partitions and the shape of the bottom gusset By changing appropriately, a self-supporting multi-chamber packaging bag having three or more small chambers can be easily designed.
Hereinafter, a self-supporting multi-chamber packaging bag having three or more small chambers will be described.

FIG. 14 is a cross-sectional view showing a content filling body in which the self-supporting multi-chamber packaging bag 107 according to the seventh embodiment of the present invention is filled with the content.
The self-supporting multi-chamber packaging bag 107 of the present invention has two partition portions 3 in which the height position of the upper end portion is the same as the height position of the upper end portion 1t of the flat surface portion, and the lower end portions 3b of the two partition portions. Are the same as those of the second embodiment of the present invention except that they are arranged in the same valley 5.
The self-supporting multi-chamber packaging bag 107 includes a small chamber 9X, 9Y having a gusset at the bottom and a gusset at the bottom between the two small chambers 9X, 9Y in the longitudinal direction of the bag by the two partition portions 3. Implementation of a content filling body which is divided into a total of three small chambers, a flat bag-shaped small chamber 9Z, and each of the small chambers 9X, 9Y, 9Z is filled with three different contents X, Y, Z It is a form.

FIG. 15 is a cross-sectional view showing a content filling body obtained by filling the self-supporting multi-chamber packaging bag 108 according to the eighth embodiment of the present invention with the content.
The self-supporting multi-chamber packaging bag 108 of the present invention has a gusset shape having two trough portions 5 shown in FIG. 2B among variations of the gusset shape of the bottom portion 2 shown in FIGS. Except for having two partition portions 3 whose height positions are the same as the height position of the upper end portion 1t of the flat surface portion, and the lower end portions 3b of the two partition portions being arranged in the respective valley portions 5. This is the same as the seventh embodiment of the invention.

FIG. 16 is a cross-sectional view showing a content filling body in which the self-supporting multi-chamber packaging bag 109 according to the ninth embodiment of the present invention is filled with the content.
The self-supporting multi-chamber packaging bag 109 of the present invention has two partition portions 3 in which the height position of the upper end portion is located below the upper end portion 1t of the flat surface portion, and the lower end portions 3b of the two partition portions. Are arranged in the same valley portion 5 and the opposite surfaces of the upper end portion of the partition portion and the inner surface of the flat portion are sealed along the upper end portion of the partition portion. This is the same as the embodiment.
In addition, the seal | sticker with which the upper surfaces of a partition part oppose and the inner surface of a plane part may be a peelable seal | sticker.

FIG. 17 is a cross-sectional view showing a content filling body in which the self-supporting multi-chamber packaging bag 110 according to the tenth embodiment of the present invention is filled with the content.
The self-supporting multi-chamber packaging bag 110 of the present invention has two partition portions 3 in which the height position of the upper end portion is located below the upper end portion 1t of the flat surface portion, and the lower end portions 3b of the two partition portions. Are arranged in the same valley portion 5, and along the upper end portion of the partition portion, one surface of the upper end portion of the partition portion and the inner surface of the plane portion facing the same are sealed, and the same applies to the other partition portion. In addition, it is the same as the fourth embodiment of the present invention except that one surface of the upper end portion of the partition portion and the inner surface of the flat portion facing the partition portion are sealed along the upper end portion of the partition portion.
In addition, the peelable seal | sticker may be sufficient as the seal | sticker of the single side | surface of the upper end part of a partition part, and the inner surface of the plane part facing it.

  The self-supporting multi-chamber packaging bag according to the embodiment of the present invention uses a plurality of partition portions having different height positions of the upper end portion, and is designed so that the sealed positions of the upper end portions do not coincide with each other. Can be opened stepwise or selectively.

FIG. 18 is a cross-sectional view showing a content filling body obtained by filling the self-supporting multi-chamber packaging bag 111 according to the eleventh embodiment of the present invention with the content.
In the self-supporting multi-chamber packaging bag 111 of the present invention, the height position of the upper end portion is one partition portion 3-1 located below the upper end portion 1t of the flat portion, and the height position of the upper end portion is the flat portion. It has one partition part 3-2 having the same height as the upper end part 1t, the partition part 3-1 and the lower end part of the partition part 3-2 are arranged in the same valley part 5, and the partition part 3-1. The same as the second embodiment of the present invention, except that one side of the upper end portion of the partition part 3-1 and one side of the partition part 3-2 facing the same are sealed along the upper end part. is there.
In addition, the seal | sticker which can peel is sufficient as the seal | sticker of the single side | surface of the upper end part of the partition part 3-1, and the single side | surface of the partition part 3-2 facing it.

FIG. 19 is a cross-sectional view showing a content filling body formed by filling the self-supporting multi-chamber packaging bag 112 according to the twelfth embodiment of the present invention.
In the self-supporting multi-chamber packaging bag 112 of the present invention, the height position of the upper end portion is one partition portion 3-1 located below the upper end portion 1 t of the flat portion, and the height position of the upper end portion is the flat portion. It has one partition part 3-2 having the same height as the upper end part 1t, the partition part 3-1 and the lower end part of the partition part 3-2 are arranged in the same valley part 5, and the partition part 3-1. This is the same as the second embodiment of the present invention except that one side of the upper end portion of the partition portion 3-1 and the inner surface of the flat portion facing the same are sealed along the upper end portion.
In addition, the seal | sticker which can peel is sufficient as the seal | sticker of the one surface of the upper end part of the partition part 3-1, and the inner surface of the plane part facing it.

FIG. 20A is a perspective view showing a content filling body in which the self-supporting multi-chamber packaging bag 113 according to the thirteenth embodiment of the present invention is filled with the content, and FIG. 20B is an AA of FIG. 20A. It is sectional drawing.
In the self-supporting multi-chamber packaging bag 113 of the present invention, the height position of the upper end portion is one partition portion 3-1 located below the upper end portion 1 t of the flat portion, and the height position of the upper end portion is the partition portion 3. -1 has one partition part 3-2 located further below the upper end part, the lower end part of the partition part 3-1 and the partition part 3-2 is arranged in the same valley part 5, and the partition part 3-2 is sealed along the upper end portion of the partition portion 3-2 by sealing and sealing one surface of the upper end portion of the partition portion 3-2 and the inner surface of the flat portion facing the partition portion 3-2. The partition part 3-1 is the same as the book part except that one side of the upper end part of the partition part 3-1 and the inner surface of the flat part facing it are sealed along the upper end part of the partition part 3-1. This is similar to the fourth embodiment of the invention.
In addition, the seal between the one side of the upper end of the partition part 3-2 and the inner surface of the flat part facing it, and the seal between the one side of the upper part of the partition part 3-1, and the inner face of the flat part facing it are peelable. A simple seal may be used.

  Below, the manufacturing method of the self-supporting multi-chamber packaging bag concerning embodiment of this invention is demonstrated concretely. In the description, the same reference numerals as those assigned to the corresponding parts of the completed packaging bag are given as the reference numerals attached to the members for forming the bags and the parts in the members.

In the production method of the present invention, a method for sealing between the members is not particularly limited. For example, a method in which the opposing surfaces of the flexible film constituting each member are sealed using an adhesive; A typical example is a method in which the material of the opposing outermost surface layer of the flexible film constituting each member is a heat-sealable homogeneous material and is sealed by heat sealing.
The procedure for sealing between these members is usually performed simultaneously by a series of operation procedures.

  Further, the method for sealing each member with a peelable strength is not particularly limited, but, for example, a method of joining opposing inner surfaces through an easy peel tape and sealing with a peelable strength; each member to be sealed The material of the outermost surface layer of the flexible film constituting the same is made of a heat sealable homogeneous material, and the temperature, pressure, and time of the heat seal are adjusted as appropriate, and sealed with a peelable strength by heat sealing. The method; etc. are typically mentioned.

The first method for producing the self-supporting multi-chamber packaging bag of the present invention is as follows.
A step of preparing a pair of members for a flat part, a member for a bottom part, and a member for a partition part, all formed of a flexible film;
Folding the bottom member, forming crests and troughs alternately, and making the number of crests one more than the number of troughs,
Sealing the end of the partition member and the valley of the bottom member to form an integrated product of the partition member and the bottom member;
The integrated product is sandwiched between the pair of flat part members to form an overlapped body, and an end when the self-supporting multi-chamber packaging bag is formed in a portion where the members of the stacked body are not sealed. A step of sealing an edge portion other than an edge portion serving as a filling port in a portion serving as an edge portion;
It is characterized by including.

In the following, “upper end, lower end, side end” refers to a positional relationship when a self-supporting multi-chamber packaging bag is formed.
21A to 21G are diagrams for explaining the first method.
In the first method, first, as shown in FIG. 21A, a pair of flat part members 1, 1, a bottom part member 2, and a partition part member 3 are prepared.
The partition member 3 prepared here has a size such that when the self-supporting multi-chamber packaging bag is formed, the height position of the upper end is the same as the height position of the upper end of the planar member. It is a member for partition parts.

Next, as shown in FIG. 21B, the bottom member 2 is folded to alternately form peaks 4 and valleys 5, and the number of peaks is one more than the number of valleys. To do. In this example, the bottom member 2 is bent so as to have a gusset shape with an M-shaped cross section having two crests and one trough.
Next, as shown to FIG. 21C, the edge part 3b of the member 3 for partition parts is arrange | positioned in the trough part 5 of the member 2 for bottom parts of a gusset shape.
Next, as shown in FIG. 21D, the bottom member 2 and the partition member 3 are sealed along the end 3b of the partition member to form an integrated product (2 + 3). With this seal, the lower edge seal portion 6 of the partition portion is formed.

Next, as shown in FIG. 21E, the integrated product (2 + 3) is sandwiched between the pair of planar portion members 1 and 1, and as shown in FIG. 21F, they are aligned to form an overlapped body (1 + 2 + 3). .
In addition, in FIG. 21F, the folding line of the peak part 4 of a bottom part and the lower end edge seal part 6 of a partition part are seen through, and it shows with a dotted line.
Next, as shown in FIG. 21G, in the portion where each member of the overlapped body (1 + 2 + 3) is not sealed, when the self-supporting multi-chamber packaging bag is formed, the filling port When the flat surface members 1 and 1 and the integrated product (2 + 3) are sealed along end edges other than the end edges, that is, both side edges and lower edge when the self-supporting multi-chamber packaging bag is formed. The lower end edge seal part 7 of the flat part and the side edge seal part 8 of the flat part are formed, and a self-supporting multi-chamber packaging bag is obtained.

  In the obtained self-supporting multi-chamber packaging bag, from the viewpoint of improving self-supporting stability, as shown in FIG. 21G, the side edge seal portion 8 of the front plane portion and the side edge seal of the rear plane portion The reinforcing seal portion 10 is formed by partially sealing the portion 8, and at the four corners on the bottom 2 side, the opposing inner surfaces of the bag are placed at predetermined positions on the side edge seal portion 8 of the flat portion. 7 to form the skew seal portion 13 by sealing in a slanting shape over a predetermined position of the lower edge seal portion 7 of the flat surface portion, the self-supporting multi-chamber packaging bag 101 shown in FIG. 7 is obtained.

In FIG. 21A, the partition member 3 to be prepared is a partition having a size such that when the self-supporting multi-chamber packaging bag is formed, the upper end portion 3t of the partition portion is positioned below the upper end portions 1t of the pair of plane portions. The self-supporting multi-chamber packaging bag 103 is obtained by changing to the member for the section and making the same procedure as in the first method described above.
Moreover, by changing the number of the partition parts 3 and the shape of the bottom gusset as appropriate, and further changing the sealing strength between the members as appropriate, the self-supporting multi-chamber packaging bags 107, 108, 109, 110, 111, 112, And 113 can be created.
Although FIGS. 21A to G illustrate a method of creating a single self-supporting multi-chamber packaging bag, the self-supporting multi-chamber packaging bag may be continuously formed from a long film in the lateral direction of FIG. 21A. .

The second method for producing the self-supporting multi-chamber packaging bag of the present invention is as follows.
A step of preparing a series of members constituting a pair of flat portions and a bottom portion, and a partition member, both of which are formed of a flexible film,
A step of bending a boundary between a portion to be a flat portion and a portion to be a bottom portion of the series member to partition a portion to be a pair of plane portions and a portion to be a bottom portion;
Folding the portion to be the bottom of the series member, alternately forming peaks and valleys, and forming a gusset shape in which the number of peaks is one more than the number of valleys;
Sealing the end of the partition member and the trough of the bottom part of the series member to form an integrated product of the partition member and the series member;
The step of sealing the edge portion other than the edge portion serving as the filling port in the portion serving as the edge portion when the self-supporting multi-chamber packaging bag is formed in the portion where each member of the integrated product is not sealed ,
It is characterized by including.
Here, the “series member” means “a member in which a planar portion and a bottom portion member are continuous”.

22A to 22F are diagrams for explaining the second method.
In the second method, first, as shown in FIG. 22A, a series of members (1 + 2) that constitute a pair of flat portions and a bottom portion, and a partition member 3 are prepared.
In addition, the partition member 3 prepared here has a size such that the height position of the upper end portion is lower than the height position of the upper end portion of the planar portion member when the self-supporting multi-chamber packaging bag is formed. It is a member for partition parts.

The series member (1 + 2) has a shape in which the bottom 2 is continuous between the pair of flat portions 1 and 1. In FIG. 22A, a series member (1 + 2) is divided by a dotted line, and a portion that becomes the flat portion 1 and a portion that becomes the bottom portion 2 are shown.
Next, as shown in FIG. 22B, the boundary between the portion that becomes the flat portion and the portion that becomes the bottom portion of the series member (1 + 2) is bent to divide the portion that becomes the pair of flat portions 1 and 1 and the portion that becomes the bottom portion 2. To do.
Next, as shown in FIG. 22C, the portions that become the bottom portion 2 of the series member (1 + 2) are folded to form the ridge portions 4 and the valley portions 5 alternately, and the number of the ridge portions 4 is the number of the valley portions 5. The gusset shape is one more than the number.

Next, as shown to FIG. 22D, the edge part 3b of the member 3 for partition parts is arrange | positioned in the trough part 5 of the part used as the bottom part of a series member (1 + 2).
In addition, in FIG. 22D, the part which cannot be seen of the member 3 for partition parts arrange | positioned is seen through, and it shows with a dotted line.

Next, as shown in FIG. 22E, along the lower end 3b of the partition member, the series member (1 + 2) and the partition member 3 are sealed to form an integrated product (1 + 2 + 3). With this seal, the lower edge seal portion 6 of the partition portion is formed.
In addition, in FIG. 22E, the folding line of the peak part 4 and the trough part 5 of the bottom part, the upper end part 3t of a partition part, and the lower end edge seal part 6 of a partition part are seen through, and it shows with a dotted line.

  Next, as shown in FIG. 22F, in the part where each member of the integrated product (1 + 2 + 3) is not sealed, it becomes a filling port among the parts that become the edge when the self-supporting multi-chamber packaging bag is formed. When the integrated product (1 + 2 + 3) is sealed along the edge portions other than the edge portions, that is, the both side edge portions and the lower end edge portions when the self-supporting multi-chamber packaging bag is formed, the lower end edge seal portion 7 of the flat portion and A flat side edge seal portion 8 is formed, and a self-supporting multi-chamber packaging bag is obtained.

  In the obtained self-supporting multi-chamber packaging bag, from the viewpoint of improving self-supporting stability, as shown in FIG. 22F, the side edge seal portion 8 of the front plane portion and the side edge seal of the rear plane portion are provided. The reinforcing seal portion 10 is formed by partially sealing the portion 8, and at the four corners on the bottom 2 side, the opposing inner surfaces of the bag are placed at predetermined positions on the side edge seal portion 8 of the flat portion. 10 is formed in a slanting shape over the predetermined position of the lower end edge seal portion 7 of the flat surface portion to form the skew seal portion 13, whereby the self-supporting multi-chamber packaging bag 103 shown in FIG. 10 is obtained.

In FIG. 22A, the partition member 3 to be prepared has a size in which the upper end portion 3t of the partition portion becomes the same as the height position of the upper end portions 1t of the pair of plane portions when the self-supporting multi-chamber packaging bag is formed. The self-supporting multi-chamber packaging bag 101 is obtained by changing to the partition member and creating the same by the same procedure as the second method described above.
Moreover, by changing the number of the partition parts 3 and the shape of the bottom gusset as appropriate, and further changing the sealing strength between the members as appropriate, the self-supporting multi-chamber packaging bags 107, 108, 109, 110, 111, 112, And 113 can be created.
22A to 22F illustrate a method of creating one self-supporting multi-chamber packaging bag, but a self-supporting multi-chamber packaging bag may be continuously formed from a long film in the lateral direction of FIG. 22A. .

DESCRIPTION OF SYMBOLS 1 ... Planar part 1b ... Lower end part of flat part 1t ... Upper end part of flat part 1s ... Side edge part of flat part 2 ... Bottom part 2b ... Lower end part of bottom part 2s ... Side edge part of bottom part 3 ... Partition part 3b ... Partition part Lower end 3b1 ... bent base 3t of the lower end of the partition 3t ... upper end 3s of the partition 3 ... side edge 4 of the partition 4 ... mountain 5 ... trough 6 ... lower end edge seal of the partition 6t ... when sealing 7... Lower end edge seal part of flat part 8... Side edge seal part of flat part 9 X ... Small chamber 9 Y ... Small chamber 10 ... Reinforcement seal part 11 ... Upper end seal part of flat part 12 ... Stripping seal part 13 ... Skew seal part 14 ... opening assistance means 15 ... pouring tool X ... contents Y ... contents Z ... contents P ... unsealed part

Claims (11)

A packaging bag having a plurality of small chambers formed of a flexible film,
A pair of opposed flat portions constituting the front side and the back side of the bag, a bottom portion having a gusset shape,
It has at least one partition part which is arranged substantially parallel to the plane part between the pair of plane parts, and whose lower end part is located at the bottom part and partitions the small chambers in the packaging bag. A self-supporting multi-chamber packaging bag. A packaging bag having a plurality of small chambers formed of a flexible film,
A pair of opposing flat portions constituting the front and back sides of the bag;
A bottom portion having a gusset shape in which peaks and valleys are alternately formed, and the number of peaks is one more than the number of valleys;
Between the pair of flat portions, at least one partition portion that is disposed substantially parallel to the flat portion and that has a lower end portion located in a trough portion of the bottom portion and partitions the small chambers in the packaging bag. This is a self-supporting multi-chamber packaging bag.   The self-supporting multi-chamber packaging bag according to claim 2, wherein a lower end portion of the bottom valley portion is located above a lower end portion of the flat portion.   An upper end portion of the partition portion is positioned at the same height as an upper end portion of the pair of plane portions, and is integrated by being sandwiched between upper end portions of the pair of plane portions. The self-supporting multi-chamber packaging bag according to any one of claims 1 to 3.   4. A small chamber having an upper end portion of the planar portion as a sealing portion at the upper end, and another chamber having a lower position than the upper end portion of the planar portion as a sealing portion at the upper end. The self-supporting multi-chamber packaging bag according to any one of the above.   The self-supporting multi-chamber packaging bag according to claim 5, wherein a sealing portion at an upper end of the other small chamber is a sealing portion by a peelable seal.   Providing an opening assisting means between the sealing positions at the upper end of each of the small chambers and at one or more positions selected from a height position below the sealing position of the lowest upper end of the respective small chambers; The self-supporting multi-chamber packaging bag according to claim 5 or 6, characterized by the above.   The self-supporting multi-chamber packaging bag according to any one of claims 1 to 7, wherein a pouring tool is attached to the self-supporting multi-chamber packaging bag.   The content filling body with which the self-supporting multi-chamber packaging bag as described in any one of Claims 1 thru | or 8 is filled with the content. A method for producing the self-supporting multi-chamber packaging bag according to any one of claims 2 to 8,
A step of preparing a pair of members for a flat part, a member for a bottom part, and a member for a partition part, all formed of a flexible film;
Folding the bottom member, forming crests and troughs alternately, and making the number of crests one more than the number of troughs,
Sealing the end of the partition member and the valley of the bottom member to form an integrated product of the partition member and the bottom member;
The integrated product is sandwiched between the pair of flat part members to form an overlapped body, and an end when the self-supporting multi-chamber packaging bag is formed in a portion where the members of the stacked body are not sealed. A step of sealing an edge portion other than an edge portion serving as a filling port in a portion serving as an edge portion;
The manufacturing method of the self-supporting multi-chamber packaging bag characterized by including. A method for producing the self-supporting multi-chamber packaging bag according to any one of claims 2 to 8,
A step of preparing a series of members constituting a pair of flat portions and a bottom portion, and a partition member, both of which are formed of a flexible film,
A step of bending a boundary between a portion to be a flat portion and a portion to be a bottom portion of the series member to partition a portion to be a pair of plane portions and a portion to be a bottom portion;
Folding the portion to be the bottom of the series member, alternately forming peaks and valleys, and forming a gusset shape in which the number of peaks is one more than the number of valleys;
Sealing the end of the partition member and the trough of the bottom part of the series member to form an integrated product of the partition member and the series member;
The step of sealing the edge portion other than the edge portion serving as the filling port in the portion serving as the edge portion when the self-supporting multi-chamber packaging bag is formed in the portion where each member of the integrated product is not sealed ,
The manufacturing method of the self-supporting multi-chamber packaging bag characterized by including.

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