JP6095048B2 - Packaging structure - Google Patents

Description

  This invention is a packaging body mainly composed of a soft packaging bag body in which a liquid packaged article is filled and packaged under evacuation by submerged seal filling or the like, with a paper outer container, The present invention relates to a packaging structure that imparts self-supporting properties and formability, and in particular, a thin and flat pouring nozzle that has a small length of protrusion from the packaging bag body, and is self-sealing to the pouring nozzle. Effectively exerting the check function, sufficiently preventing unintentional entry of outside air into the package body, and at the same time facilitating the dispensing of liquid packaged items as expected, We propose a technology that effectively prevents accidental dripping of the packaged items after the dispensing is stopped.

  Peripheral part excluding the base part of the sealant layer facing each other of two thin and flat nozzle films or a single nozzle film folded at the center part, which is often a laminated structure Patent Documents 1 and 2 describe a technique for forming a dispensing nozzle that has a self-sealing function by fusing and bonding the material and partitioning a dispensing passage inside. Such a pouring nozzle forms a part of the packaging bag by projecting in a substantially right triangle shape from the upper end portion of the soft packaging bag body formed by fusion bonding of the laminated film for packaging, for example. In the case of pouring the packaged material in the bag from the package formed by filling and packaging the liquid packaged material in the packaging bag under aeration, the tip sealing part of the dispensing nozzle is removed by tearing, etc. , By tilting the package with the dispensing passage open, it functions to allow the packaged items in the bag to be poured out under the action of water head pressure and the like without taking outside air into the package, By returning the packaging body to the standing posture, the inside surface of the extraction passage that is wet with the packaged material in the bag is immediately brought into close contact, thereby reliably preventing outside air from entering the packaging body based on the self-seal check function. It works as much as you can.

  In addition, Patent Document 3 ensures that such a self-sealing check function of the pouring nozzle is ensured, and ensures smooth pouring of the packaged items in the bag. An outer container that prevents the occurrence of subsequent unintentional dripping is disclosed.

JP 2005-15029 A JP-A-2005-59958 JP 2010-260614 A

  The present invention provides a self-sealing of the pouring nozzle described in Patent Documents 1 and 2, wherein the length of the pouring nozzle protruding from the soft packaging bag body is kept small, and the paper outer container is made small. By sufficiently improving the outer container described in Patent Document 3 while sufficiently ensuring the non-return function, it is possible to smoothly and surely dispense the liquid packaging material as expected. In addition, it is possible to more effectively prevent accidental dripping of the packaged article in the bag after the dispensing is stopped, and to be self-supported by filling and packaging the liquid packaged article in the packaging bag. It is intended to provide a packaging structure comprising a packaging body having no regularity and a paper outer container that stores and holds the packaging body to give the packaging body self-sustainability and regularity. is there.

  The packaging structure of the present invention is provided by protruding a substantially right triangle from the upper end portion of a soft packaging bag body, which is formed by fusion-bonding a packaging laminated film having required barrier properties and the like. , The outer peripheral portion excluding the base end is fused and joined, and the inside is formed with an extraction passage having an upper main extraction passage and a lower retention passage, and exhibits a self-seal check function. A package body in which a liquid package is filled and packaged under evacuation in a packaging bag having a proper dispensing nozzle, and is placed in a paper outer container that gives the package body self-supporting and formability Regardless of the presence or absence of a bottom plate that supports the package body, the outer surface of the top fusion part of the package body is joined to the inner surface of the upper end portion of the outer container. When the flat ring shape at the lower end portion of the container is a polygon, for example, a regular polygon Furthermore, the upper end portion is formed into two flat plates, and the outer contour shape of the intermediate portion between the upper end portion and the lower end portion is curved to bulge outward, and a pouring nozzle is provided in the outer container. A protective piece that covers at least from one side and is cut along the tear guide rod, and at the cut position of the protective piece, an upper side of the pouring nozzle that extends substantially parallel to the top fusion part of the package In addition to the upper fused portion, more preferably, the lower fused portion extending in the direction intersecting the top fused portion of the package is also sandwiched between the outer containers without any gap, When at least the portion corresponding to the upper main pouring path, that is, the upper portion of the pouring passage, the tip sealing portion of the pouring nozzle is cut out to open the pouring passage, the opening is passed through the packaging. A nozzle that pours the outer container in a straight line with the package storage space Range 0.3~10.0mm from the surface, more preferably from 0.5 to 5.0 mm, more preferably made of by spaced in the range of 1.0 to 2.0 mm.

  Here, the shape of the pouring nozzle protruding from the packaging bag body is “substantially right triangle”, and the upper fused portion of the pouring nozzle is “almost parallel to the top fused portion of the package. The term “extends” means that the upper fused portion of the dispensing nozzle may be attached to the packaging bag body in an upward or downward direction at an angle of up to 10 °, and the dispensing nozzle This is in consideration of the fact that the upper edge of the upper fused portion may be inclined in either the upper or lower direction by artificially making the width of the upper fused portion wider or narrower.

  In such a packaging structure, preferably, the outer container is provided with respective protective pieces protruding from the both sides of the front and back sides so as to project the nozzle, and the tip of the nozzle is unintentionally deformed. Preventing unintentional excision of the sealing portion more effectively.

Preferably, the bottom end of the outer container is provided with a plurality of bottom plates sufficient to support the weight of the package, and at least the bottom plate located at the lowest end, more preferably the bottom surface of all the bottom plates, in the thickness direction of the package The bottom plate pushing guide rods, which are located in correspondence with the center of the bottom plate, are provided in a straight line over the entire bottom plate, so that the outer container is crushed and deformed in accordance with the decrease in the liquid package contents in the package. It should be simple and reliable.
In this case, the contour shape of the plurality of bottom plates is an appropriate shape that does not protrude from the inner contour shape, except that at least one bottom plate corresponds to the inner contour shape of the lower end of the outer container. Can be selected.

  In this case, the outer container may be flattened and deformed by flattening and deforming the outer container along the pushing guide rods on the bottom plate of the outer container. It is preferable for preventing unintentional outflow from the pouring nozzle of the packaged items remaining in the package due to the above.

  In the packaging structure of the present invention, the top fusion part of the package formed by filling and packaging a liquid package in a packaging bag is joined to the two flat plate-like parts of the upper end portion of the outer container. By supporting the outer container with the polygonal portion at the lower end portion, it is possible to impart self-supporting property and formability to the package regardless of whether the outer container has a support bottom plate of the package.

  Further, a thin and flat pouring nozzle is provided so as to protrude sideways from the upper end portion of the soft packaging bag body in a substantially right triangle shape, and the pouring nozzle is disposed at the cutting position of at least one protective piece. The upper fusion part extending substantially parallel to the top fusion part of the package, more preferably, in addition to the upper fusion part, the lower fusion part extending in a direction intersecting the top fusion part of the package Each of these is sandwiched between outer containers without any gaps, so that the pouring nozzle is prevented from rolling and the packaged material in the bag is reliably poured into the intended position.

On the other hand, at the upper main pouring path of the pouring nozzle, that is, in the pouring passage partitioned inside the peripheral joint portion of the pouring nozzle, the tip opening position of the pouring passage is located at the upper part thereof. Then, in the portion corresponding to the upper main pouring path that communicates linearly with the package storage space of the packaging bag, the outer container is in the range of 0.3 to 10.0 mm from the surface of the pouring nozzle, more preferably 0. .5 to 5.0 mm, more preferably by placing the gap in the range of 1.0 to 2.0 mm, the excess of the upper main pouring path when pouring out the package in the bag In addition to effectively constraining the bulging with the outer container, the packaged item in the bag can be poured out smoothly and smoothly. Self-seal check function without dripping of the discharge nozzle, ie Bag extremely quickly to generate adhesion of the pouring passages wet material to be packaged, it is possible to sufficiently prevent the outside air from entering the no packaging.
Therefore, even if the protruding length of the pouring nozzle from the packaging bag body is kept small, the self-sealing check function of the pouring nozzle can be sufficiently ensured, and the outer container including the protective piece can be secured. Miniaturization can be realized effectively.

  In addition, the space | interval from the pouring nozzle surface of an outer container shall be the range of 0.3-10.0 mm here, if it is less than 0.3 mm, the required amount of packaging in a bag is made smooth. In addition to hindering quick pouring, the dripping of the packaged items in the bag after the dispensing stops will be forced, and smooth solids that may be mixed in the packaged items in the bag If the dispensing is hindered, and if it exceeds 10.0 mm, the self-sealing check function of the dispensing nozzle will not be performed quickly, and the protruding length of the dispensing nozzle from the packaging bag body will be hindered. This is due to the inevitable increase.

In addition, here, by providing a protective piece that covers at least one side of the dispensing nozzle on the outer container, permanent deformation to the dispensing nozzle, unexpected cutting of the tip sealing portion of the dispensing nozzle, etc. The dispensing nozzle can be effectively protected.
In addition, since this protective piece is excised in advance along the tear guide rod when the packaged item in the bag is poured out, the protective piece does not hinder the dispensing.

  Furthermore, here, by making the planar contour shape of the lower end portion of the outer container into a polygonal shape, the outer container and the packaging bag accommodated therein are made to stand stably before and after the outer container is flattened and deformed. In addition, by making the upper end portion of the outer container into two flat plates, it is possible to simplify the joining of the top fused portion of the package to the upper end portion of the outer container, and the outer container By changing the outer contour shape of the intermediate portion to a curved shape, the intermediate portion can be elastically restored to its original shape when the packaged item in the package is more quickly poured out by pressing the intermediate portion of the outer container. Can be performed sufficiently smoothly and promptly by the elastic restoring force inherent to the intermediate portion.

  In such a packaging structure, if the outer nozzle is provided with protruding protective nozzles that cover the pouring nozzle from both the front and back sides, and the pouring nozzle is sandwiched between two protective pieces, It is possible to more fully prevent unintended permanent deformation of the nozzle, as well as deterioration of the self-seal check function and displacement of the pouring part due to this permanent deformation, and the tip sealing part of the pouring nozzle It is possible to more effectively prevent leakage of the package contents in the bag due to unintentional excision.

  Further, when a plurality of bottom plates are provided at the lower end portion of the outer container, it is possible to increase the strength of the entire bottom plate and increase the load supporting capacity, and at least the bottom plate located at the lowest end, preferably all When the bottom plate pushing guide rods, which are located on the bottom surface of the bottom plate in correspondence with the central portion in the thickness direction of the package, are provided linearly over the entire bottom plate, for example, the volume of the package in the package is When the number decreases, the bottom plate is pushed in along the pushing guide rods, and the outer container is flattened and deformed, so that almost all of the articles to be packaged remaining in the package can be squeezed out smoothly.

  By the way, the crushing deformation of the outer container in this case can be made simple and reliable by performing along the pushing guide rods provided on one or more bottom plates.

  Then, when the outer container is flattened and deformed in this way, the outer container, and thus the package housed therein, is provided with independence by selecting the outer contour shape of the lower end portion of the outer container. In this case, it is possible to effectively prevent unintentional leakage of the remaining packaged material in the package, which is caused by the fall of the outer container.

It is a perspective view which shows embodiment of the package formed by filling and packaging a liquid to-be-packaged object in a packaging bag. It is a perspective view which shows embodiment of the packaging structure formed by accommodating the packaging body shown in FIG. 1 in a paper-made outer container. It is a perspective view which shows the state which cut out the protection piece shown in FIG. 2, and exposed the extraction nozzle. It is a front view which shows the clearance gap with respect to the extraction | pouring nozzle of an outer container. It is the outer container developed view and bottom board bottom view which show the example of formation of the baseplate to a paper outer container, and the formation example of the pushing guide rod to this baseplate. It is a perspective view which shows the crushing deformation state of an outer container.

The present invention will be described below based on the illustrated embodiments.
1 in FIG. 1 shows a packaging bag, and this packaging bag 1 has a flexible packaging bag body 2 formed by fusion-bonding laminated films having various barrier properties and the like, and an upper end portion thereof. A thin and flat pouring nozzle 3 which exhibits a self-seal check function provided so as to protrude in a substantially right-angled triangle shape from the side to the side is provided.

For such a packaging bag 1, the required amount of liquid packaging such as liquid seasoning, soup, dressing, wine, liquor, etc. is filled and packaged in an evacuated state with a submerged seal, a foreign matter seal, etc. The package 4 is obtained.
In the illustrated package 4, the hatched portion in the figure indicates a fusion bonded portion such as vertical and horizontal.

Here, the pouring nozzle 3 protruding in a substantially right-angled triangle shape from the soft packaging bag main body 2 to the side is a dot in the drawing on the peripheral portion excluding the base end side 3a that will be located in the packaging bag main body 2. The pour-out passage 5 is defined on the inner side of the fusion-bonding portion 3b by performing the fusion bonding as shown in the matte shape, and the pour-out passage 5 exists in the upper part of the pour-out passage 5. When the tip sealing portion 3c of the pouring nozzle 3 is cut off at the position where the V notch 6 is formed, for example, and the pouring passage 5 is opened, the space for storing the packaging material of the packaging bag 1 through the pouring passage opening The upper main pouring path 7 within the range communicating linearly in 1a and the lower staying path 8 forming the remainder of the pouring path 5 are provided.
In addition, since the injection | pouring nozzle 3 shown in figure has strengthened the joint strength to the packaging bag main body 2 with the reinforcement seal | sticker part 9, at least one part of the lower retention path 8 mentioned above is to be packaged. When viewed from the side of the storage space 1 a, it is hidden behind the reinforcing seal portion 9.

A packaging body 4 having such a pouring nozzle 3 as shown in FIG. 1 is housed in a standing posture in a paper outer container 10 as shown in FIG. 2, and the top part of the packaging body 4 is melted. A bottom plate as will be described later by bonding the outer surface of the landing portion 4a to the inner surfaces of two flat plate-like portions 10a at the upper end portion of the outer container 10 by adhesive bonding, fusion bonding, or the like. Regardless of having or not, self-sustainability and formability are imparted under the action of the outer container 10.
Here, when the outer container has a bottom plate, the weight of the package body 4 can be supported by the bottom plate, so that the top joint portion 4a of the package body 4 is joined to the plate-like portion 10a of the outer container 10 Although it is not necessary to increase the strength so much, when the outer container 10 does not have a bottom plate, the bonding strength of the top fused portion 4a of the package 4 to the plate-like portion 10a of the upper end portion of the outer container 10 is It is necessary to increase the weight of the package 4 to such an extent that the package 4 can be suspended and held.

  By the way, the planar outer contour shape of the lower end portion of the outer container 10 is a polygonal shape, and according to this, when packing, transporting, and displaying the outer container 10 containing the packaging body 4, Space efficiency can be sufficiently enhanced by bringing the edges of the lower end portion of the outer container 10 into contact with each other.

  Further, the top fusion part 4 a of the package 4 is sandwiched and joined to the plate-like part 10 a of the upper end portion of the outer container 10, so that the dispensing nozzle 3 projected from the upper end portion of the packaging bag body 2 is 10, the outer container 10 can be held together with the packaging body 4 without the action of external force on the packaging body 4 by gripping or clamping the plate-like portion 10 a of the outer container 10. Can be moved, transported, and the like.

And in the place shown in FIG. 2, the pouring nozzle 3 is covered to the outer container 10 from both sides of the front and back, the pouring nozzle 3 is protected from permanent deformation, etc. At the time of dispensing, two protective pieces 12 are cut out along the perforated perforations or other tear guide rods 11.
Each of the protective pieces 12 shown in the figure is for inspecting whether or not the dispensing nozzle 3 of the package 4 is in an appropriate position by visual observation or by optical effect, light receiving means, etc. A through hole 13 is provided.

  And the two through-holes 14 provided in the plate-shaped part 10a of the upper end part of the outer container 10 are whether the top part melt | fusion part 4a of the package 4 accommodated in the outer container 10 exists in an appropriate position. In the vicinity of the excision position of the protective piece 12, the vertically long through holes 15 are for checking the filling amount, consumption amount, etc. of the packaged articles in the package body 4, The outer container 10 has a through-hole 16 positioned at the upper end of the lower end of the polygonal shape for hooking an edge of the outer container 10 and moving or transporting the outer container 10 together with the package 4 as a hook engaging part. Alternatively, the package 4 existing inside the through-hole 16 is pressed to pour out the in-bag package under pressure.

  Here, the tear guide rod 11 shown in the figure has a curved shape that protrudes toward the distal end side of the dispensing nozzle 3 at each of the upper end portion and the lower end portion following the plate-like portion 10a, while the intermediate portion between the two portions. The part has a curved shape that is concave toward the packaging bag body 2 side. As a result, compared to the case where the tear guide rod 11 extends in a straight line, the risk of unexpected bending, cutting and the like of the protective piece 12 is effectively removed. Achieving clamping according to the requirements of the discharge nozzle 3, and a concave curved shape portion that is concave toward the packaging bag body 2 side in the middle of the outer container 10 and required between the dispensing nozzle 3 and the outer container 10 Can be ensured.

FIG. 3 shows a plate-like portion 10a at the upper end portion of the outer container 10, and each of the two protective pieces 12 whose upper end portions can also be joined to each other is guided for tearing out the package contents in the bag. 4 shows a state in which the pouring nozzle 3 of the package 4 is cut out from the outer container 10 along the ridge 11 and exposed to the outside. As shown in the figure, the portion of the pouring nozzle 3 corresponding to the upper fused portion 3d extending linearly substantially parallel to the top fused portion 4a of the package 4 is two plate-like shapes at the upper end portion of the outer container. The portion of the pouring nozzle 3 corresponding to the lower fused portion 3e extending in the direction intersecting the top fused portion 4a of the package 4 is also curved in a curved shape. By the vicinity of the tear guide rod 11 that protrudes toward the tip of the pouring nozzle 3 on the side of the container 10 This also will be no gap sandwiched.
On the other hand, in the portion corresponding to at least the upper main pouring path 7 described in relation to FIG. 1 of the pouring nozzle 3, the outer container 10 is separated from the surface of the pouring nozzle 3 by 0.3 to 10. It is located at an interval of 0 mm, preferably 0.5 to 5.0 mm, more preferably 1.0 to 2.0 mm.

According to this, under the opening of the pouring passage 5 where the tip sealing portion 3c of the pouring nozzle 3 is excised, the upper main pouring passage 7 is held under the clamping of the upper and lower fused portions 3d, 3e by the outer container 10. By pouring out the package in the bag from the bag, the package in the bag can be accurately poured out to the expected position.
In addition, the upper main pouring path 7 can freely swell by water head pressure or the like until it is restrained by the outer container, so that a required amount of the packaged items in the bag can be poured out smoothly and quickly. .

  On the other hand, the fullness exceeding the predetermined amount of the upper main pouring path 7 is restrained in contact with the outer container 10, and an excessive pressure rise in the upper main pouring path 7 is suppressed. Therefore, without significantly increasing the bonding strength of the fusion bonded portion 3b at the peripheral edge of the pouring nozzle 3, the self-sealing check function of the pouring nozzle 3 can be sufficiently secured to be wrapped in the bag. Can be repeatedly dispensed.

Further, here, the fullness of the upper main pouring path 7 exceeding a predetermined amount is restrained by the outer container 10, and the simultaneous inflow amount of the in-bag packaging material into the upper main pouring path 7 is limited. As a result, the outer container 10 and the packaging body 4 are returned independently from the pouring posture in which the outer container 10 and the packaging body 4 are tilted. The self-seal check function under the intervention of the thin film of the package can be exhibited very quickly.
Therefore, in this packaging structure, it is possible to ensure that the self-sealing check function is exerted on the pouring nozzle 3 even when the protruding length of the pouring nozzle 3 from the soft packaging bag body 2 is set short. As a result, it is possible to reduce the cost of the packaging structure by making the outer container 10 including the protection piece 12 sufficiently small.

As the paper outer container 10 having such a packaging structure, a paper having a thickness corresponding to the capacity of the packaging body 4, for example, a paper board of 250 to 500 g / m ² is illustrated in FIG. Cutting and forming the required tear guide rods, folding guide rods, etc., for example, the left and right halves of the figure are bent at the center bending guide rod 17 position, and then the sides of the lower end part are joined together The outer container 10 has two bottom plates 18a and 18b at the lower end, as shown in the figure.

In FIG. 5 (a), it is folded before or after the bottom plate 18a at two side portions adjacent to the projecting portion of the inner bottom plate 18a that is folded first and inscribed in the left and right halves. The reinforcing tongues 19 are provided so as to protrude, and the reinforcing tongues 19 are inserted into the bent corners for insertion at the side portions that are continuous from the sides of the adjacent bottom plate 18a to the front side in the protruding direction. 20 is projected, and a bottom plate 18b that is bent outside the bottom plate 18a and is positioned at the lowermost end of the outer container 10 is projected at the center of the other half.
In addition, since it is sufficient for such a bottom plate 18b to compensate for the lack of strength of the bottom plate 18a and the like, it is not essential that the bottom plate 18a be inscribed in the left and right halves exactly like the bottom plate 18a. It can be set to an appropriate shape and size within the range.
In the bottom view of the bottom plate shown in FIG. 5B, the bottom plate 18a inscribed in the left and right halves has a hexagonal shape, but the bottom plate 18b has an octagonal shape having a smaller bottom area than the bottom plate 18a.

  In addition, in the developed view shown in FIG. 5 (a), in order to facilitate the formation of the outer contour shape of the lower end portion of the outer container 10 into a polygonal shape, for example, a hexagonal shape, A mountain fold guide rod 21 extending linearly in the vertical direction is provided. Of course, the number of these mountain folding guide rods 21 can be appropriately increased or decreased according to the required polygonal shape of the lower end portion of the outer container 10.

  By the way, in the case where a plurality of bottom plates 18a and 18b are provided at the lower end portion of the outer container 10 as shown in FIG. 5 to increase the load supporting capacity of the bottom plate, at least the bottom surface of the bottom plate 18b positioned at the lowermost end, As shown, bottom plate push-in guide rods 22 and 23 located on the bottom surfaces of the two bottom plates 18a and 18b corresponding to the center portion in the thickness direction of the bottom of the package 4 stored in the outer container 10 are shown. Provided linearly over the entire bottom plate 18a, 18b, to simplify crushing deformation of the outer container 10 along the push-in guide rods 22, 23 when the package contents in the package 4 are reduced, The squeezing deformation facilitates squeezing out the remaining packages in the bag.

  Here, the outer container 10 is flattened and deformed along the pushing guide rods 22 and 23 of the bottom plates 18a and 18b of the outer container 10, and the outer container 10 is still under the action of the polygonal edge portion of the lower end edge thereof. 6, when it is made to stand stably as shown in FIG. 6, the possibility of unintentional collapse of the outer container 10 and the package 4 is sufficiently removed, and the leakage of the remaining packaged items in the bag from the dispensing nozzle 3 The risk of getting out can be removed.

  As described above, as the laminated film for packaging for the packaging bag body 2, use a laminated film having waist which may have two or more layers, various barrier layers, intermediate layers and the like. On the other hand, a laminated film in which a sealant layer is provided on both front and back surfaces of a uniaxial or biaxially stretched base film layer for a dispensing nozzle is thin and flat, for example, PE20 / NY15 / PE20, and has a low waist It is preferable to increase the self-sealing check function.

  As a sealant layer of such a thin laminated film for the pouring nozzle 3, for example, a polyethylene layer, a polypropylene layer, an ethylene vinyl alcohol (EVA) layer, an ionomer layer, an EVOH layer or the like having a thickness of 5 to 50 μm is used. In particular, the sealant layer located on the outer surface of the dispensing nozzle 3 needs to be capable of being fusion bonded to the sealant layer on the inner surface of the packaging bag body 2.

Moreover, as a base film layer of the pouring nozzle 3, uniaxial or biaxially stretched films generally used for liquid packaging films such as nylon, polyester, polypropylene, polyethylene terephthalate, and EVOH can be used. It is preferable to use a film in which a gas barrier layer comprising a SiO ₂ vapor deposition layer, a vinylidene chloride coating layer, an aluminum oxide coating layer, an Al vapor deposition layer, or a sputtering layer thereof is formed on one surface of the film.
As a result, the inner surfaces of the pouring nozzles wetted with the article to be packaged adhere well to each other, water vapor impermeability, gas barrier properties, etc. are imparted, and an effective check function is exhibited over a long period of time. It is possible to effectively prevent the outside air from entering. The thickness of the base film layer is preferably 5 μm or more and 30 μm or less, for example, in order to maintain the flexibility of the dispensing nozzle 3, and the thickness of the gas barrier layer is preferably about 0.5 to 20 μm. .

Such a pouring nozzle made of a laminated plastic film having a structure of at least three layers (sealant layer [surface material] / base film layer / sealant layer [backing material]) has a sealant layer as an outer surface of a base end portion, By having a low melting point, the sealant layer (same kind of film) on the inner surface of the side of the packaging bag body made of a soft laminated plastic film (mainly two layers) without causing fusion of the high melting point sealant layers on the inner surface side Heat seal or the like, and is attached to the packaging bag body so as to protrude.
Thereby, the flexible packaging bag which provides the extraction | pouring nozzle which protruded in the substantially right-angled triangle shape from the upper end part of the side part to the side with respect to the packaging bag main body is obtained.

By the way, the self-seal check function of such a pouring nozzle is, for example, a pouring formed between two overlapping plastic films that are flat and in close contact with each other and that face each other. The passages have a function of tightly adhering to each other by the constant interposition of the liquid material by capillary action, and reliably preventing the outside air from entering the packaging bag main body.
This non-returning function of the dispensing nozzle is to tilt the packaging bag body so that the dispensing passage opening (pour spout) at the tip of the dispensing nozzle faces downward, and then dispenses the packaged items in the bag. By returning the packaging body from standing up, the dispensing nozzle is released from the action of water head pressure and returned to its original shape at the time of manufacture, and part of the packaged items in the dispensing nozzle is returned to the packaging body. The inner surface (pouring path) between the pair of front and back films wetted by the packaged items in the bag is automatically performed by adsorbing each other (self-sealing).
Such close contact is caused by a package that has been shrunk or crushed and deformed as the packaged material is poured out of the packaging bag. It will be more certain if

DESCRIPTION OF SYMBOLS 1 Packaging bag 1a Package storage space 2 Packaging bag main body 3 Outlet nozzle 3a Base end side 3b Fusion joint part 3c End sealing part 3d Upper side fusion part 3e Lower side fusion part 4 Packaging body 4a Top part fusion part 5 Discharge passage 6 V notch 7 Upper main discharge passage 8 Lower stay passage 9 Reinforcement seal portion 10 Outer container 10a Plate portion 11 Tear guide rod 12 Protective pieces 13, 14, 15, 16 Through hole 17 Bending guide rod 18a, 18b Bottom plate 19 Reinforcing tongue piece 20 Folding corner 21 Mountain fold guide rod 22, 23 Push guide rod

Claims (4)

A flexible packaging bag body made by fusion-bonding a laminated film for packaging is provided to project from the upper end to the side in a substantially right-angled triangle shape. In addition, a packaging body in which a liquid package is filled and packaged in a packaging bag having an upper main pouring path and a lower staying path and having a flat pouring nozzle that exhibits a self-seal check function, A packaging structure in which the packaging body is stored in a standing posture in a paper outer container that imparts self-supporting properties, and the outer surface of the top fused portion of the packaging body is joined to the inner surface of the upper end portion of the outer container. Because
The flat outer contour shape of the lower end portion of the outer container is a polygonal shape, the upper end portion is two flat plates, and the outer contour shape of the intermediate portion between the upper end portion and the lower end portion is curved outward. The outer container is provided with a protective piece that covers the pouring nozzle from at least one side and is cut along the tear guide rod, and the package of the pouring nozzle is disposed at the cutting position of the protective piece. The upper fused portion extending substantially parallel to the top fused portion of the upper portion is sandwiched between the outer containers without any gaps, and the outer container is set to zero from the surface of the dispensing nozzle at the portion of the dispensing nozzle corresponding to at least the upper main dispensing passage. A packaging structure that is positioned with an interval in the range of 3 to 10.0 mm.   The packaging structure according to claim 1, wherein the outer container is provided with respective protective pieces that cover the pouring nozzle from both the front and back sides. A plurality of bottom plates are provided at the lower end portion of the outer container, and at the bottom surface of the bottom plate located at least at the lowermost end, an indentation guide rod for crushing and deforming the packaging body at the central portion in the thickness direction is provided on the entire bottom plate. The packaging structure according to claim 1 or 2, wherein the packaging structure is provided in a straight line.   The packaging structure according to claim 3, wherein reinforcing tongue pieces are provided so as to protrude from two side portions adjacent to the protruding portion of the bottom plate located at the uppermost end of the bottom plate.

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