JP6044894B2 - Package outer container - Google Patents

Description

  The present invention provides a liquid packaging material, which can be various liquids or powders, granular materials, etc., or a liquid material that can be made into a viscous material, etc. It is related to outer containers made of paper, synthetic resin, etc., which contain packages that are filled and packaged in a degassed state, etc., and give the packages self-supporting and formability. Proposal of a technology that can effectively prevent unintentional lodging in the width direction of the outer wall of the outer container that contains the package, with a gentle decrease in the bottom wall width of the outer container that accompanies the body to be packaged. To do.

Examples of the outer container of a paper or synthetic resin package include those described in Patent Documents 1 and 2.
The former outer container consists of a paper outer box that houses the pouch, and the bottom is formed wide enough to be self-supporting, and the top is sealed flat, and the top of the outer box can be easily cut with a cutting tool. The latter outer container is filled with an item to be packaged in a flexible packaging bag having a film-like check nozzle projecting sideways from the upper end of the packaging bag body. This is a cylindrical container for storing a non-self-supporting liquid-filled inner package, and a protruding sachet provided with a tear guide rod for exposing the nozzle is projected at a position corresponding to the film check nozzle. It is provided and has a bottom portion that enables self-supporting.

JP-A-9-97135 JP 2010-260614 A

  However, even in any of the outer containers disclosed in any of these patent documents, the bottom of the outer box or the pouch or the non-self-supporting liquid-filled inner package is formed by filling and packaging the article to be packaged. The bottom of the outer packaging container has a high-rigidity structure, which means that a small amount of residual packaging cannot be forcibly extruded when the remaining amount of the packaging in the pouch or in the inner packaging is greatly reduced. There is a problem, and therefore, in the outer container described in the above-mentioned patent document, there is a problem that a small amount of an object to be packaged remains in the pouch or the inner package.

  Therefore, the applicant first presses the bottom wall to enable forcible squeezing of the residual package when the residual package in the package formed by filling and packaging the package becomes small. Japanese Patent Application No. 2012-246517 has proposed an outer container that allows deformation of the outer container and the package based on the deformation.

  This outer container is made of paper as illustrated in the developed plan view of FIG. 8 (a), and cuts the paperboard having a thickness corresponding to the capacity of the package as shown in the drawing, and also tears it as required. Forming a guide rod, a folding guide rod, etc., for example, each half 50 in the state where the left and right halves 50 in the figure are half-folded into a mountain fold or the like at the center folding guide rod 51 position. The main body of the outer container configured in this way protrudes from the central side of the lower end of each half, and closes the lower end of the outer container main body, Each of the bottom plates 52 and 53 functions to support a package housed in the outer container and to prevent protrusion of the package body at the corner of the outer container body.

Here, the one bottom plate 52 protruding from one lower end side of the outer container main body is a polygon that closes the lower end of the outer container main body, and is positioned opposite to the one lower end side of the outer container main body. The other bottom plate 53 projecting from the lower end side of this is adhered to one bottom plate 52 and functions to increase the strength of the bottom wall.
In addition, here, each of the substantially triangular reinforcing tongue pieces 54 protruding from the lower end side of the outer container main body at a position sandwiching the protruding side adjacent to the protruding side of the bottom plate 52 is, for example, the bottom plate 52. And is sandwiched between the bottom plates 52 and 53 in a non-bonded state.
Further, at the two corners at the front end of the bottom plate 52 in the protruding direction, folding corners 56 for insertion are formed via mountain folding guide rods 55, and these folding corners 56 are placed in the outer container. By bringing the package into contact with the package to be stored, the package is prevented from protruding to the lower side of the bottom plates 52 and 53.

FIG. 8 (b) is a bottom view showing the bottom wall 57 formed by assembling the bottom plates 52, 53 and the like. Here, a flat hexagon having two long and short symmetry axes perpendicular to each other is shown. The bottom fold induction rod 58 that extends in the direction of the long axis of symmetry of the bottom wall 57 and connects the two corners of the bottom wall 57 linearly to the respective bottom plates 52 and 53 of the bottom wall 57 formed. The bottom wall 57 is pushed and deformed at the position where the valley folding guide rod 58 is formed even if the remaining amount of the packaged articles remaining in the package is reduced. Then, by crushing and deforming the outer container and the package, the remaining package can be effectively squeezed out, and the residual amount of the package in the package can be effectively reduced.
In addition, 59 in FIG. 8 (a) shows the bending induction rod which makes it easy to bend the lower end part of an outer container main body into a flat hexagonal shape.

  However, the end user of the packaged item in the package often does not notice the presence of the valley fold guide rod 58 formed on the bottom wall 57, and pushes and deforms the bottom wall 57 at the position of the valley fold guide rod 58. Without pressing the outer container made of paper in the thickness direction of the outer container body at the intermediate portion in the height direction, the pressing position and the outer container body due to the high rigidity of the bottom wall 57 Between the two flat plate-like portions of the upper end portion, the package body in which the package remains remains is crushed by the outer container body, and the package extraction path of the package is blocked. Therefore, on the contrary, there is a problem that it is difficult to pour out the remaining package.

On the other hand, the end user who notices the presence of the valley folding guide rod 58 on the bottom wall 57 pushes and deforms the bottom wall 57 at the position where the guide rod 58 is formed, thereby effectively effecting the packaged item remaining in the package. Can be squeezed out and poured out.
However, in the bottom wall 57 of the outer container as illustrated in FIG. 8, the reinforcing tongue piece 54 is rubbed against the two bottom plates 52, 53 along with the pressing deformation of the outer container, and the bending corner for insertion is also provided. Since the portion 56 is rubbed against the inner surface of the outer container main body, a large frictional force is generated. Therefore, the bottom wall 57 that has been pushed and deformed is unlikely to return to its original shape before being pushed. Thus, the bottom wall width is inevitably reduced every time the indentation is deformed, and there is a disadvantage that the outer container tends to fall down in the width direction of the bottom wall 57.

  An object of the present invention is to solve such problems of the previously proposed technology, and the object of the present invention is to reduce the amount of packaged articles remaining in the package, and to By pressing the intermediate part in the height direction, the remaining package can be squeezed out effectively without the possibility of blocking the pouring passage, and the bottom wall friction caused by the indentation deformation of the bottom wall Packaging that can effectively reduce the bottom wall width of the outer container by reducing the bottom wall width by effectively reducing the force and smoothing the return of the bottom wall that has been pushed and deformed to its original shape. In providing an outer container.

  The outer container of the packaging body of the present invention contains a packaging body formed by filling and packaging a liquid packaged article in a soft packaging bag, and gives the packaging body self-supporting property and formability, A bottom wall of a polygonal planar outer contour shape having two symmetrical short and long symmetrical axes is provided at the lower end of the main body of the outer container, and this bottom wall extends in the direction of the long symmetrical axis of the bottom wall. In addition to providing a linear pushing guide rod connecting the two corners of the bottom wall, a polygonal bottom plate for closing the lower end of the outer container body is provided on one lower end side of the outer container body along the long axis of symmetry of the bottom wall. A presser foot bottom plate that is protruded and opposed to one lower end side of the polygonal bottom plate on the other lower end side along the long axis of symmetry of the bottom wall, for example, superimposed on the bottom side. And projecting each of the one lower end side and the other lower end side of the lower end of the outer container body directly. In addition, at each of the lower end sides sandwiched indirectly, the corner protrusions that overlap each other at the corners in the direction of the long symmetry axis of the bottom wall and are joined to each other but are not joined to any bottom plate are formed. Thus, the bottom wall is configured.

  Preferably, each of the bent bottom plates of the polygonal bottom plate is bent toward the inner side of the outer container body at the two corners on the front end side in the protruding direction, and comes into contact with the packaging body stored in the outer container. The piece is provided via a bending guide rod, and preferably, the out-of-plane contour shape of the bottom wall is a flat hexagon similar to that described in the proposed technology, and this can be a regular hexagon.

  Here, each of the polygonal bottom plate and the presser bottom plate may be provided so as to protrude from the longest lower end side parallel to each other at the lower end of the main body of the outer container longer than the maximum protruding length of any corner protruding piece. It is preferable for preventing unintended friction between the corner protrusion and each bottom plate.

  The packaging bag is provided so as to protrude from the upper end portion of the soft packaging bag body formed by fusion-bonding the packaging laminated film including the sealant layer to the side, for example, in a substantially right triangle shape. It is fused and joined at the peripheral part except the end side, and the pouring passage is defined on the inside, and the self-seal check function is exhibited, or one laminated film is folded, or two laminated films are overlapped And a flat outer contour shape of the lower end portion of the outer container body, and an upper end portion of the outer container body in the form of two flat plates, The contour shape outside the plane of the intermediate portion between the upper end portion and the lower end portion is a curved shape that bulges outward, and the packaging posture is such that the package body is packed and packaged in the packaging bag on the outer container body. The dispensing nozzle on one side or both Cover from the side, it is preferable to project a protective strip to be cut along the tear inducing flaw.

  In the outer container of the packaging body as described above, a bending rod in the pushing direction is attached to the position of the pushing guide rod that extends in the direction of the long axis of symmetry of the bottom wall and linearly connects the two corners of the bottom wall. Alternatively, it is preferable that permanent deformation remains in the pushing direction at the position of the pushing guide rod in order to realize reliable pushing deformation of the bottom wall.

  In the outer container according to the present invention, in particular, the bottom wall is provided with a pushing guide rod extending in the direction of the long symmetry axis of the bottom wall and connecting the two corners of the bottom wall, and the bottom wall is disposed at the pushing guide rod position. For example, when the object to be packaged in the package is reduced by pushing or deforming once or twice, and the overlap of the package acting on the bottom wall is reduced, the remaining packaged object in the package is forcibly squeezed out. At that time, when the intermediate portion in the height direction of the outer container is pressed, the bottom wall is automatically pushed and deformed at the formation position of the pushing guide rod, so that the packaging body is crushed by the outer container body, that is, the packaging The residual package can be effectively squeezed out without fear of blocking the body package extraction passage.

Moreover, in this outer container, the bottom plate protruding from one lower end piece of the outer container main body along the long axis of symmetry of the bottom wall has a polygonal shape that closes the lower end of the outer container main body. The corner protrusions disposed at the respective corners in the direction of the long symmetry axis are directly connected to the lower end piece of the container body having a polygonal shape, the one lower end piece along the long symmetry axis of the bottom wall, etc. Indirectly sandwiching and projecting at the lower end sides where the opposing distance gradually decreases, so the distance from the projecting lower end side to the pushing guide rod of each of the polygonal bottom plates is the respective corner protruding piece Therefore, if the bottom wall is pushed and deformed at the position of the pushing guide rod, the amount of deformation of the bottom plate, and thus the amount of escape, will be that of the corner protrusion. As a result of this, the bottom plate and corner protrusions Are indentations in Note, it means that a gap is formed between both of them, the friction between the bottom plate and the corner protrusion will be effectively prevented.
For this reason, it becomes easy to return the bottom wall that has been subjected to indentation deformation to the original shape before indentation, etc., and the bottom wall width that accompanies the indentation deformation of the bottom wall or due to the decrease in the package contents in the bag. The amount of decrease is reduced, and the fall of the outer container in the width direction of the bottom wall is effectively prevented.

  In such an outer container, the polygonal bottom plate is bent toward the inner side of the outer container body at the two corners on the front end side in the protruding direction, and stored in the outer container, and contacts the lower end portion of the package. When each bent piece to be provided is provided, the bent piece functions in particular to restrain the protrusion of the lower end portion of the package from the bottom wall provided in the outer container body.

  In addition, when the contour shape outside the plane of the bottom wall is a flat hexagonal shape, it is assumed that the self-sustainability of the outer container itself is sufficiently stable under stable contact with the desk surface of each side. The possibility of the outer container falling down, swinging, etc. can be effectively eliminated with respect to the external force in the direction of the symmetry axis of the two long and short axes orthogonal to the.

  Then, each of the polygonal bottom plate and the presser bottom plate, which are attached to each other, is directed from the lower end side of the main body of the outer container toward the opposing side rather than any of the corner protrusions. When projecting long, the bottom wall provided at the lower end of the main body of the outer container is pushed and deformed at the position where the pushing guide rod is formed. Make sure that it is larger than that of the projecting piece, and when it is pushed and deformed, remove the risk of friction between each bottom plate and each corner projecting piece on the bottom wall of the outer container body more effectively, The indentation deformation of the bottom wall and the return of the bottom wall to the original shape can be performed more smoothly.

  Further, the packaging bag is provided so as to protrude laterally from the upper end portion of the soft packaging bag body obtained by fusion-bonding the packaging laminated film having the sealant layer, and melted at the peripheral portion excluding the base end side. Japanese Patent Application Laid-Open No. 2005-15029 and Japanese Patent Application Laid-Open No. 2005-2005 include a flat and thin-walled pouring nozzle that is bonded and joined and has a pouring passage on the inside and exhibits a self-seal check function. Similar to the packaging bag described in the publication No. 59958, a package formed by filling and packaging a packaged bag under evacuation by the action of the pouring nozzle, more directly into the packaging bag body. Immediately prevent unintentional entry of outside air immediately before, during and after the extraction of the package based on the wetness of the inner surface of the extraction passage by the liquid package Can do.

Here, the self-sealing check function of the pouring nozzle is, for example, a pour-out passage formed between two overlapping soft plastic films that are flat and in close contact with each other, and formed between the overlapping films. It is a function of firmly adhering to each other by the constant intervention of the liquid material by capillary action and reliably preventing the outside air from entering the packaging bag body.
Such a self-seal check function of the dispensing nozzle allows the packaging bag body to be poured by tilting the packaging bag body so that the dispensing passage opening (spout) at the tip of the dispensing nozzle faces downward. After taking out, in addition to returning the pouring nozzle from the action of hydraulic head pressure and returning to the original shape at the time of manufacture by returning the standing up of the packaging body, a part of the packaged items in the bag inside the pouring nozzle, Due to the reduced pressure when returning to the inside of the package, the inner surfaces of the pair of front and back films (pour-out passages) wetted by the packaged items in the bag are automatically performed by adsorbing each other. .
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

Moreover, regarding the form of the outer container, the planar outer contour shape of the lower end portion of the outer container main body is a polygon, and the upper end portion of the outer container main body is formed as two flat plates, and the upper end portion and the lower end portion The outer contour shape of the flat surface of the middle part is a curved shape that bulges outward. In addition, the pouring nozzle is covered at least from one side of the outer container body with the packaging body stored, and cut along the tearing guide ridge. When the protective piece is projected, the outer container containing the package can be efficiently stored, packed, displayed, etc. in an aligned posture based on the polygon at the lower end of the outer container body. By making the upper end portion of the outer container main body into two flat plates, the top fused portion or the like of the package is simply and reliably sandwiched and joined between the two plates. And the middle part of the outer container body in the height direction By forming the outer contour of the plane into a curved shape that bulges outward, the intermediate portion is pressed and the package body is compressed and deformed together with the outer container body, so that the remaining amount of the packaged items in the package body Regardless of this, it is possible to effectively assist the dispensing of the packaged object from the dispensing nozzle of the package.
In addition, by providing the outer container body with a protective piece that is cut off afterwards to cover the pouring nozzle, unintentional pouring to the pouring nozzle when packing the package with the outer container, carrying, displaying, etc. It is possible to effectively prevent the formation of the outlet opening and the generation of permanent distortion in the dispensing nozzle with the protective piece.

  By the way, especially when a bending ridge in the pushing direction is attached to the position of the pushing guide rod extending in the direction of the long symmetry axis of the bottom wall and connecting the two corners of the bottom wall, for example, by repeated pushing deformation, When the remaining amount of the packaged item in the body becomes small and the remaining packaged item needs to be squeezed out, the bottom wall of the outer container is pushed down by pushing the intermediate part in the height direction of the outer container body. In this position, it can be simply and reliably pushed and deformed, and by this, almost the entire small amount of the remaining package can be squeezed out and poured out sufficiently smoothly.

  This is the same when the permanent strain in the indentation direction remains at the position of the inductive guide rod extending in the direction of the long symmetry axis of the bottom wall and connecting the two corners of the bottom wall. Due to the presence of permanent distortion, it becomes much easier to deform the bottom wall in the pushing direction, so when the remaining amount of the packaged items becomes small, the middle of the outer container body in the height direction By pressing the part, the bottom wall of the outer container can be easily and reliably pushed and deformed at the position of the pushing guide rod, so that almost the entire small amount of the remaining package can be poured out smoothly.

It is a perspective view which shows embodiment of the package which fills and packages a liquid to-be-packaged object in a packaging bag, and is accommodated in the outer container which concerns on this invention. It is a perspective view which shows embodiment of the outer container which accommodated the package shown in FIG. It is a perspective view which shows the state which cut out the protection piece of the outer container shown in FIG. 2, and exposed the pouring nozzle. It is the outer container expansion | deployment figure and enlarged bottom view which show the example of formation of the baseplate etc. to the lower end side of an outer container main body, and a bottom wall. It is explanatory drawing which shows the assembly example of a bottom wall. 3 is a graph showing the results of Example 1. 10 is a graph showing the results of Example 2. It is the expanded view and bottom wall bottom view which show the outer container made from paper which concerns on the previous proposal technique.

Embodiments of the present invention will be described below.
1 in FIG. 1 shows a packaging bag, and this packaging bag 1 is fused with a sealant layer of a laminated film of two or more layers to which various barrier properties and the like are given as shown by hatching in the figure. Folding a soft laminated bag body 2 that is joined and the like, and a single laminated film that is provided so as to protrude from the upper end portion to a side of a substantially right triangle and that exhibits a self-seal check function, or The two laminated films are overlapped, and the outer layer sealant layer is fused and bonded to the inner layer sealant layer of the packaging bag body 2 to provide a flat and thin-walled dispensing nozzle 3.

  For such a packaging bag 1, the required amount of liquid packaging, such as liquid seasoning, soup, dressing, wine, liquor, etc., is filled under evacuation with a submerged seal, contaminant seal, etc. For example, the package 4 is formed by forming the bottom fusion-bonding portion 4a.

Here, the pouring nozzle 3 projecting sideways from the upper end portion of the soft packaging bag body has a sealant layer under a half-fold of a single laminated film or under a superposition of two laminated films, It is poured into the inside of the fusion-bonding portion 3b by applying a dot in the figure and performing fusion-bonding as shown in a satin-like shape at the peripheral edge portion excluding the base end side 3a to be located in the packaging bag body 2. A passage 5 is defined.
The pouring nozzle 3 forms a leading end opening in the pouring passage 5 communicating with the packaged article storage space 1a of the packaging bag 1 by cutting out the leading end sealing portion 3c, for example, at the position where the V notch 6 is formed. be able to.
Moreover, according to the pouring nozzle 3, the packaged material in the bag is tilted together with the packaging body 4 in a state where the tip opening is formed in the pouring passage 5, so that the packaged article in the bag is subjected to the action of the hydraulic head pressure on the pouring passage 5. Thus, on the basis of the deformation of the packaging bag body 2, the package body 4 can be poured out without taking in outside air. By immediately bringing the inner surface of the pouring passage 5 into close contact, the self-sealing check function of the pouring nozzle 3 can be reliably prevented from entering the outside of the package 4.
In the illustrated dispensing nozzle 3, the lower end portion of the figure is fused and joined to the inner surface of the packaging bag body 2 by a reinforcing seal portion 7 which is also hatched, so that the joining strength is enhanced. Even if the internal pressure is increased, unintended peeling does not occur in the fusion bonded portion 3b of the dispensing nozzle 3.

A package 4 having such a pouring nozzle 3 as shown in FIG. 1 is stored in an upright position in an outer container 8 which can be made of synthetic resin or paper, as illustrated in FIG. Thus, self-sustainability and formability are imparted, and the outer container 8 is packed, transported, displayed, etc. under the alignment posture of the outer container 8.
In this case, the fusion bonding portion 4b at the top of the package 4 has an outer surface attached to the inner surface of the two flat plate-like portions 8a at the upper end portion of the main body of the outer container 8, adhesive bonding, fusion bonding, or the like. Joined by.
By the way, the lower end of the main body of the outer container 8 has a polygonal outer contour shape as described later, and a bottom wall for closing the lower end of the main body is provided, and the weight of the package 4 is supported by the bottom wall. It is unnecessary to increase the bonding strength of the fusion bonding portion 4b at the top of the packaging body to the plate-like portion 8a of the main body of the outer container 8 so that the overlapping of the packaging body 4 can be suspended and held. .

  Here, the outer contour of the lower end of the main body of the outer container 8 is a polygon, for example, a flat hexagon crushed in the extending direction of one symmetry axis. By aligning and aligning, as described above, the space efficiency can be sufficiently increased when the outer container 8 containing the package 4 is boxed, transported, displayed, etc., and the package 4 It is possible to make the outer container 8 housing the container stand in a sufficiently stable manner.

  In addition, here, the fusion bonding portion 4b at the top of the package 4 is sandwiched and joined by the plate-like portion 8a at the upper end portion of the main body of the outer container 8 so as to protrude from the upper end portion of the packaging bag main body 2 to the side. The pouring nozzle 3 provided by the outer container 8 can be sandwiched as required by the main body of the outer container 8, and the packaging body 4 can be obtained by gripping or sandwiching both plate-like portions 8a of the outer container 8 main body from the outside. The outer container 8 can be moved and transported together with the packaging body 4 without exerting an external force on the package 4.

2 also covers the main body of the outer container 8 with the pouring nozzle 3 from both sides of the front and back, protecting the pouring nozzle 3 from unintentional tearing permanent deformation, etc. When the liquid packaged item is poured out, two protective pieces 10 to be cut out along the tearing guide rod 9 made of perforated holes or the like are projected.
Each protective piece 10 shown in the figure is used to inspect whether or not the dispensing nozzle 3 of the package 4 is in the proper position by visual observation or by optical light emission, the action of a light receiving means, or the like. A through hole 11 is provided.

  Here, in each of the two through holes 12 provided in the plate-like portion 8a at the upper end portion of the outer container main body, the fusion-bonding portion 4b at the top of the package 4 housed in the outer container 8 is present at an appropriate position. The oblong through holes 13 that are long in the vertical direction in the vicinity of the excision position of the protective piece 10 check the filling amount, consumption amount, etc. of the object to be packaged in the package 4. The circular through-hole 14 between the lower end portion and the upper end portion of the outer container main body is for hooking the edge of the outer container body and moving the outer container 8 together with the package 4 as a hook engaging portion or the like. It is for conveying or for directly pressing the package 4 inside the through-hole 14 to pour out the packaged items in the bag under pressure.

In addition, the tearing guide rod 9 shown in the drawing has both the upper end portion and the lower end portion shown in the figure have a curved shape that protrudes toward the tip end side of the dispensing nozzle 3, while the intermediate portions of the two portions are The curved shape is concave toward the packaging bag body 2 side.
According to this, as compared with the case where the tear guide rod 9 is extended in a straight line, the protective piece 10 is not unexpectedly bent and removed, and the outer container body at the convex curve portion and its vicinity is removed. Is realized, and on the other hand, a concave curved portion that is recessed toward the packaging bag body 2 side, between the surface of the dispensing nozzle 3 and the outer container body, It is possible to secure an interval necessary for dispensing the packaged items in the bag.

FIG. 3 shows the two protective pieces 10 whose upper ends can be joined to each other by the plate-like portion 8a of the upper end portion of the outer container 8 main body, in order to pour out the package contents in the bag. It shows a state where the outer nozzle body is cut along the tear guide rod 9 and the pouring nozzle 3 of the packaging body 4 is exposed to the outside. A portion of the outlet nozzle 3 corresponding to the upper fused portion 3d extending substantially parallel to the top fused joint portion 4b of the packaging body 4 is formed without gaps by the two plate-like portions 8a at the upper end portion of the main body of the outer container 8. The portion of the pouring nozzle 3 corresponding to the lower fusion portion 3e extending in the direction intersecting the top fusion joint portion 3c can also be sandwiched by the main body of the outer container 8, And a portion of the dispensing passage 5 corresponding to the concave curved portion and its The outer surface of the near can be assumed to be positioned sufficiently apart from the body of the outer container 8.
According to this, the pouring passage 5 located corresponding to the concave curved portion can be swelled and deformed as expected for smooth pouring of the packaged object that may also contain solid matter. it can.

  On the other hand, the fullness of the extraction passage 5 exceeding a predetermined amount is restricted by contact with the outer container body, and an excessive pressure increase in the extraction passage 5 is suppressed by the outer container body. Therefore, without significantly increasing the bonding strength of the fusion splicing portion 3b at the peripheral portion of the pouring nozzle 3, the self-sealing function of the pouring nozzle 3 is sufficiently secured and the packaged item in the bag is secured. Can be dispensed repeatedly. In addition, here, by restricting the simultaneous inflow amount of the packaged items in the bag into the pouring nozzle 3 based on the contact of the pouring nozzle 3 with the outer container body, the outer container 8, and thus the packaging. By returning the outer container 8 and the packaging body 4 to the self-supporting posture from the pouring posture of the packaged object in which the body 4 is tilted, the thin film of the packaged material is interposed on the inner surface of the pouring passage in the pouring nozzle 3 Underneath, the self-seal check function can be exhibited very quickly.

When such an outer container 8 is made of paper, the thickness of the paper can be, for example, in the range of 250 to 500 g / m ² according to the inner volume of the package 4 and the like. When it is made of a synthetic resin, it is preferable to have a thickness of about 0.3 to 3.0 mm, such as polypropylene, polyethylene, polyethylene terephthalate, nylon, ABS resin, polystyrene or the like.

  FIG. 4A is a developed plan view of the outer container 8 that can be made of paper or synthetic resin. The outer container 8 cuts cardboard, for example, as shown in the figure, and also provides a required tear guide plate. In the state where the folding guide rods or the like are formed, the respective half portions 21 are folded at the position of the center folding guide rod 20, for example, in the state where the folding guide rods 20 are folded at the position of the folding guide rod 20. The outer container 8 shown in the figure has two symmetry axes at the lower end of the outer container body, and closes the lower end of the outer container body. It will have a hexagonal bottom wall.

As shown in FIG. 4 (a), in order to form a flat hexagonal bottom wall as described above, the bottom end 23 of the outer container body, which is along the long axis of symmetry of the bottom wall, A polygonal bottom plate 24 that closes the lower end of the outer container main body protrudes and is positioned to face one lower end side 23 thereof, and the other lower end side 25 that is along the long axis of symmetry of the bottom wall. In addition, a center portion of the polygonal bottom plate 24 is covered from, for example, the lower surface side, and a presser bottom plate 26 attached thereto is projected, and one lower end side 23 and the other lower end of the lower end of the outer container main body are provided. Each of the sides 25 is directly or indirectly sandwiched, in the figure, directly sandwiched, and the lower end sides 27 and 28 are overlapped with each other at each corner in the direction of the long symmetry axis of the bottom wall and joined to each other. Are not joined to any of the bottom plates 24, 26. Each corner protrusion 29, 30 forming a triangular crucible projecting form.
In the figure, 31 is provided at two corners on the front end side of the polygonal bottom plate 24, and is bent toward the inside of the container body at the position of the mountain folding guide rod 31, so that Each of the folded pieces that come into contact with the lower end portion of the package 4 accommodated in the outer container 8 under frictional engagement with the inner surface is shown. These folded pieces 31 overlap each other and are joined together. Similar to the corner protrusions 29 and 30, it functions to prevent the lower end portion of the package body 4 from protruding to the lower side of the bottom wall to be formed.

FIG. 4B is a bottom view of the bottom wall 35 formed by combining the bottom plates 24 and 26 and the corner protrusions 29 and 30 that are protruded from each lower end side as described above. For example, the bottom plate 24 closes the lower end of the outer container main body with the bottom plate 24 in a state where the bent pieces 31 at the two corners on the front end side in the protruding direction of the polygonal bottom plate 24 are bent along the mountain fold guide rod 32. The bent piece 31 is inserted into the inside of the outer container main body, and then the presser bottom plate 26 is bent to the bottom side of the bottom plate 24 at the center thereof, and is attached to the bottom plate 24 over the entire surface of the bottom plate 26. Thereafter, the corner protrusions 29 and 30 are bent sequentially toward the bottom surface side of the bottom plate 24 or in the order of the corner protrusions 29 and 30, and only the corner protrusions 29 and 30 are joined together. Can be constructed by joining together .
As a result, the outer container main body is mountain-folded along the respective bending guide rods 33 at the lower end portion of the outer container main body, thereby forming a flat hexagon similar to the bottom wall 35.
In addition, here, such a flat hexagonal bottom wall 35 having two long and short symmetry axes orthogonal to each other extends in the direction of the long symmetry axis, and two corners of the bottom wall 35 are formed. By forming the linear push guide rod 36 to be connected with a thickness approximately 2 to 3 times that of the proposed technique and performing one or two push deformations at the position of the guide rod 36, the package 4 in particular. When the amount of the inner package is reduced and the weight of the package 4 is reduced, the pushing deformation of the bottom wall 35 when the intermediate portion in the height direction of the outer container body is pressed is made smoother.

  Here, in order to further smooth the pushing deformation of the bottom wall 35 at the position where the pushing guide rod 36 is formed, the bottom wall 35 is bent by the repeated pushing deformation of the bottom wall 35 along the guiding rod 36. By attaching a heel or by sticking the tip of the presser bottom plate 26 to the opposing side wall of the outer container body under the action of the tensile force on the bottom plate 26, both the bottom plates 24 and 26 are pressed in advance. It is preferable to leave this strain.

  FIG. 5 closes the lower end of the outer container main body for the outer container 8 formed by joining the lower end portions of the respective half portions 21 shown in FIG. It is explanatory drawing which illustrates the point which assembles the bottom wall 35 as shown in FIG.4 (b), and the bottom plates 24 and 26, the bending piece 31, and the corner | angular protrusions 29 and 30 are shown by a thin arrow line in the figure. The bottom wall 35 as described above can be assembled by bending or joining as described above.

Example 1
When the package 4 formed by filling and packaging 360 ml of soy sauce as a liquid package into the outer container 8 configured as described above is stored as described above, When each of the bottom wall width and the tilt angle in the width direction of the bottom wall was measured in accordance with the change in the amount dispensed and compared with the proposed technique, the results were as shown in FIGS. 6 (a) and 6 (b). .
The bottom wall width is measured when the bottom wall is deformed by pressing the soy sauce and the bottom wall width returns to a stable state. This also applies to the measurement of the lying angle.
As shown in FIG. 6 (a), in the case of the outer container 8 of the embodiment, when the amount of dispensing increases and the weight of the package decreases, the bottom wall width is reduced by reducing the frictional force of the bottom wall constituent member and the like. In the outer container of the proposed technology, the bottom wall width is reduced because the bottom wall is difficult to return to the original position due to the frictional force of the bottom wall components, etc. It can be seen that the rate of decrease increases.
In addition, as shown in FIG. 6 (b), since the center of gravity of the package body is lowered with the increase in the amount to be dispensed, any of the outer containers 8 also has an increased lodging angle at the beginning of the dispensing. However, after the amount of the outer container of the proposed technology reaches 180 ml, the lodging angle is drastically reduced in combination with the decrease in the width of the bottom wall of the outer container.
On the other hand, in the outer container 8 of the embodiment, the lowering of the lodging angle can be effectively suppressed based on the fact that the bottom wall width is easily restored, and the remaining amount of soy sauce in the package 4 is reduced to 30 ml. It can be seen that the lodging angle can be maintained at about the same level as that of the new product.
In addition, even if it was in the package accommodated in any outer container, the package body fell down with the outer container, and there was no leakage of soy sauce from the pouring nozzle.

(Example 2)
FIG. 7 shows the measurement of the reaction force when the outer container was pushed 5 mm in the width direction of the bottom wall at a height of 70 mm from the bottom wall of the outer container body. The force required to grip the container is almost the same for the outer container of the example and the outer container of the proposed technology, and it can be seen that the required gripping force decreases with the increase in the amount of extraction in any outer container.

  By the way, when the soy sauce was forcibly squeezed out while pressing the bottom wall using the outer container of the example, the remaining amount of soy sauce was measured for five packages, and the average value was about 3.87 ml. In contrast, when the soy sauce was allowed to flow naturally using the outer container of the proposed technology, the average remaining amount was about 12.11 ml.

  In such an outer container according to the present invention, each of the polygonal bottom plate 24 and the presser bottom plate 26 is connected to any corner protruding piece 29, 30 from the longest lower end side parallel to each other at the lower end of the main body of the outer container. Thus, the protruding length of each bottom plate 24, 26 to the formed push guide rod 36 position is increased to the formed push guide rod 36 position of the corner projecting pieces 29, 30. When the bottom wall 35 is pushed and deformed by the pushing guide rod 36, the deformation amount of the bottom plates 24 and 26 is sufficiently larger than the deformation amount of the corner projection pieces 29 and 30, The frictional force of the bottom plates 24, 26 with respect to the corner protrusions 29, 30 is more effectively removed, and the bottom wall 35 that has been pressed and deformed is returned to its original shape by the inherent elastic force of the outer container body, Make it smoother It can be.

  As described above, the embodiment of the present invention has been described with reference to the drawings. However, the outer contour shape of the bottom wall of the lower end of the main body of the outer container has two symmetrical axes that are perpendicular to each other. As long as it has, a square, a hexagon (regular hexagon), and other appropriate polygons can be selected.

  In the above description, the packaging laminated film for the packaging bag body 2 may include various barrier layers including a vapor deposition layer, an intermediate layer 3 and the like, which are two layers or three layers or more. A laminated film having a sealant layer on both the front and back sides of the uniaxially or biaxially stretched base film layer for the pouring nozzle 3 is, for example, PE20 / NY15 / PE20. It is preferable to make it thin, flat and weak, in order to enhance 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 can be 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 composed of 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 packaged object are in close contact with each other, water vapor impermeability, gas barrier properties, etc. are imparted, and an effective check function is exhibited over a long period of time. The entrance of outside air into the bag is more effectively prevented. The thickness of the base film layer is preferably, for example, 5 μm or more and 30 μm or less 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 composed of a laminated film having a structure of at least three layers (sealant layer [surface material] / base film layer / sealant layer [backing material]) has a low sealant layer which is the outer surface of the base end portion. By having a melting point, the sealant layer (from the same kind of film) on the inner side surface of the packaging bag body made of a soft laminated plastic film (mainly two layers) without causing the fusion of the high melting point sealant layers on the inner surface side. The sealant layer) is fusion-bonded by heat sealing or the like, and is attached in a state of protruding from the packaging bag body.
Thereby, the flexible packaging bag which provides the extraction | pouring nozzle 3 which protruded in the substantially right triangle shape to the side from the upper end part with respect to the packaging bag main body is obtained.

DESCRIPTION OF SYMBOLS 1 Packing bag 1a Package storage space 2 Packing bag main body 3 Outlet nozzle 3a Base end side 3b Fusion joint part 3c End seal 3d Upper fused part 3e Lower fused part 4 Packing body 4a Bottom fused joint Portion 4b Top fusion joint portion 5 Outlet passage 6 V notch 7 Reinforcement seal portion 8 Outer container 8a Plate-like portion 9 Tear guide rod 10 Protective pieces 11, 12, 13, 14 Through hole 20 Bending guide rod 21 Half portion 22 Tongue pieces 23, 25, 27, 28 Lower edge 24, 26 Bottom plate 29, 30 Corner protrusion 31 Folding piece 32 Mountain folding guide rod 33 Bending guide rod 35 Bottom wall 36 Pushing guide rod

Claims (7)

An outer container for a package that contains a package formed by filling and packaging an object to be packaged in a soft packaging bag, and gives the package a self-supporting property and formability,
A bottom wall of a polygonal flat outer contour shape having two symmetrical short and long symmetrical axes is provided at the lower end of the main body of the outer container, and the bottom wall extends in the direction of the long symmetrical axis of the bottom wall. In addition to providing a linear pushing guide rod connecting the two corners of the bottom wall, a polygonal bottom plate for closing the lower end of the outer container body is provided on one lower end side of the outer container body along the long axis of symmetry of the bottom wall. An outer container main body is formed by protruding a presser bottom plate that is bonded to the central portion of the polygonal bottom plate on the other lower end side along the long axis of symmetry of the bottom wall that opposes the one lower end side. The bottom end of the bottom wall sandwiching each of the one bottom end and the other bottom end is overlapped with each other at each corner in the direction of the long axis of the bottom wall and joined to each other. The outer container of the package comprising the bottom wall by forming the respective corner protrusions that are not joined to each other.   The bending piece which is bent toward the inner side of the outer container main body and is in contact with the packaging body at two corners on the front end side of the polygonal bottom plate is provided via a bending guide rod. Outer packaging container.   The outer container of the package according to claim 1 or 2, wherein the outer contour shape of the bottom wall is a flat hexagon.   Each of the polygonal bottom plate and the presser bottom plate protrudes from the longest lower end side parallel to each other at the lower end of the main body of the outer container longer than the maximum protruding length of any corner protruding piece. An outer container of the package according to any one of the above.   The packaging bag is provided so as to protrude sideways from the upper end portion of the packaging bag body formed by fusion-bonding a packaging laminated film having a sealant layer, and is fusion-bonded at a peripheral portion excluding the base end side. In addition, a flat thin-walled dispensing nozzle having a dispensing passage on the inside and exhibiting a self-seal check function is provided, and the planar outer contour shape of the lower end portion of the outer container body is a polygon, The upper end portion of the main body is formed into two flat plates, and the contour shape outside the plane of the intermediate portion between the upper end portion and the lower end portion is curved to bulge outwardly. The packaging according to any one of claims 1 to 4, wherein a protective piece that covers the pouring nozzle and is cut along the tearing guide rod is provided in a storing posture of the package formed by filling and packaging the package. The outer container of the body.   The package according to any one of claims 1 to 5, wherein a bending rod in the pushing direction is attached to a position of the pushing guide rod extending in the direction of the long symmetry axis of the bottom wall and connecting two corners of the bottom wall. Outside container.   The packaging according to any one of claims 1 to 5, wherein a permanent strain in the pushing direction is left at the position of the pushing guide rod extending in the direction of the long symmetry axis of the bottom wall and connecting two corners of the bottom wall. The outer container of the body.

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