JP5540232B2 - Liquid packaging structure - Google Patents

Description

  The present invention relates to a flexible packaging bag in which a film-like check nozzle (nozzle for pouring liquid) with a self-sealing check function constituted by superposition of two laminated plastic films laminated is projected. In addition, various liquids are filled with liquid seals (to heat-seal the film from above the filling liquid so that air, nitrogen gas, etc. are not mixed) to form a non-self-supporting liquid filling inner package, The present invention relates to a liquid-filled packaging structure in which this is self-supported in a self-supporting dispense outer packaging container having a dispenser function.

  A liquid dispensing nozzle made of a plastic film with a self-sealing check function, that is, a flexible packaging bag having a film-like check nozzle, as disclosed in Patent Documents 1 and 2 according to the proposals of the inventors There is. Moreover, since these flexible packaging bags are non-self-supporting packaging bags formed of a soft laminated film, it is inconvenient to use them alone as they are. It took the form which accommodates and fixes in the container as described in above.

  However, the conventional packaging structure shown in Patent Document 3 needs to be fixed after the non-self-supporting flexible packaging bag is stored in a paper box, and the manufacturing process including the packaging is complicated and expensive. There was a problem. Therefore, in Patent Document 4, the inventors can replace a non-self-supporting liquid-filled inner package with an outer packaging container having a dispenser function such as a soft-laminated film or a self-supporting flexible packaging bag made of paper. A liquid filled packaging structure is proposed. According to this Patent Document 4, the support form can be easily stabilized by fixing the upper and lower parts of the non-self-supporting liquid-filled inner package to the outer packaging container as necessary, and to be packaged Can be stably dispensed, and the production is simple and the product cost can be reduced.

  By the way, in Patent Document 4, as shown in FIG. 7 of this document, an overhanging portion surrounding a film-like check nozzle of a non-self-supporting liquid-filled inner package to be stored is provided on one side of the outer packaging container. A linear tear guide rod for pulling out the film-like check nozzle is provided on the overhanging portion. However, when this tear guide rod is provided in a straight line along the top and bottom, the overhanging portion is easily bent along the tear guide rod, and the inner film-like check nozzle is also bent and deformed accordingly, and the outside air It may be difficult to sufficiently prevent entry into the packaging bag body, the self-seal check function cannot be effectively exhibited, and the stability such as the dispensing direction may be inferior.

  In addition, when the linear tearing guide rod is torn and the film check nozzle is pulled out from the outer packaging container, the film check nozzle is pressed from both outer surfaces by the restoring force of the outer packaging container material (film). By tightening, the packaged product staying in the check nozzle can be returned to the packaging bag body, while the packaged product liquid remaining near the unsealed end of the check nozzle is pushed forward. As a result, there has been a problem that dripping to the outside easily occurs.

  Further, in the liquid-filled packaging structure disclosed in Patent Document 4, the film check nozzle is pulled out by tearing and opening downward from the cutout portion provided at the upper end of the overhanging portion of the outer packaging container. I am going to do that. However, it has also been found that with this method, there is a possibility that the film-like check nozzle may be mistakenly opened simultaneously with the opening of the overhanging portion.

  Furthermore, in the liquid-filled packaging structure of Patent Document 4, when it is intended to stand upright, only the center part of the lower end surface is grounded, or conversely, only both side end parts are grounded. I found out that it was bad.

  The present invention is a technique obtained by further improving the technique described in Patent Document 4, and an object of the present invention is to bend the outer packaging container having a self-supporting dispenser function along the tear guide fold. To propose a liquid-filled packaging structure that suppresses and prevents deformation of the film-like non-return nozzle located inside the outer packaging container, and at the same time has excellent liquid drainage and excellent self-standing characteristics of the outer packaging container. is there.

As a result of intensive studies to achieve the above object, the inventors have arrived at the present invention having the following gist configuration. That is, the present invention projects a flat film-like non-return nozzle projecting a non-return function when a liquid material is interposed between overlapping plastic films on one edge of a packaging bag body made of a soft laminated film. And at least one of the front and back laminated films of such a packaging bag body is provided with a linear or curved uneven structure at least in the vicinity of the side edge on the film check nozzle side. A non-self-supporting liquid material filling inner package formed by sealing a liquid or viscous packaged material in a liquid in a mold flexible packaging bag;
A cylindrical container for storing the non-self-supporting liquid-filled inner package, and at the time of storage, the tip end side of the nozzle is exposed at one edge of the position corresponding to the film check nozzle A self-supporting dispenser comprising a protruding sachet portion that can be opened and provided with a tear guide rod for pulling out a nozzle for exposing it and exposing it, and having a bottom portion that enables self-supporting An outer packaging container;
In a liquid filling and packaging structure comprising:
Nozzle base end portion at a middle position corresponding to the dispensing passage portion of the film-like check nozzle, where the nozzle pull-out tear guide rod provided from the upper end to the lower end of the overhanging pouch portion of the self-supporting dispensing outer packaging container A liquid-filled packaging structure characterized by being recessed on the side is proposed.

In the present invention, the liquid filling and packing structure is
(1) induction flaw tear the nozzle drawer at a position corresponding to the upper and lower seal portions of the upper seal portion of the film-like non-return nozzle, and Turkey are corrugated so as to curve the tip of a nozzle. ,
(2) having a gap of 3 mm to 10 mm between the lower edge of the film check nozzle and the inner edge of the seal part of the adjacent self-supporting dispense outer packaging container;
(3) The tear-out guide rod for pulling out the nozzle is to be opened by tearing from either the top from the bottom or the top to the bottom,
(4) In the self-supporting dispense outer packaging container, both corners of the bottom of the boat bottom shape are chamfered, the radius of curvature R of the chamfered portion is 8 mm or more, and the bottom is loose and convex downward. Presenting a curved shape,
(5) The film-like check nozzle is composed of two soft laminated films that are overlapped with each other at the outer peripheral edge except the portion that becomes the nozzle base end, and the central portion is configured as a dispensing passage. The base end of the packaging bag body is fused and joined,
When the article to be packaged is poured by tilting the packaging bag main body, the inner surfaces of the laminated films that are in a wet state when the article to be packaged pass through are in contact with each other. A non-return function that prevents the intrusion of outside air by the mutual contact effect caused by the staying of the package on the inner surface;
(6) The film-like non-return nozzle has embossing, blasting, knurling, wrinkling, vertical / horizontal stripe processing on the base end side excluding the planned tearing position and the vicinity of at least one of the front and back laminated films. Having a concavo-convex structure formed as a partial pattern or a full pattern by applying a planar shape, an island shape, a stripe shape ,
(7) The concavo-convex structure portions of the pair of laminated films on the front and back are provided so that the concave portions and the convex portions are fitted to each other to form a substantially constant gap of 30 to 100 μm,
(8) The film-like non-return nozzle has a dispensing amount control liquid reservoir in a lower part adjacent to the base end side thereof,
(9) The film-like non-return nozzle is provided with a damming portion that closes a part of the upper part or the lower part of the extraction passage at the nozzle inlet portion of the base end seal part thereof,
(10) Any one of corona discharge treatment, UV ozone treatment, plasma treatment, and flame treatment on the inner surface of one or both of the inner surface of the non-seal portion of the packaging bag body and the inner surface of the discharge passage of the film check nozzle A wetting process consisting of one or more processes has been applied,
(11) The base end portion of the film check nozzle is fused at a low temperature by the facing sealant layer, and the inner surface of the dispensing passage is temporarily sealed .
(12) The packaging bag body has a gas reservoir space at a position higher than the upper edge of the film-like check nozzle of the upper horizontal seal portion thereof,
(13) The non-self-supporting liquid-filled inner package has an upper end lateral seal portion fused to the upper end of the self-supporting dispense outer packaging container and suspended in the self-supporting dispense outer packaging container. Stored and held in a suspended state,
(14) The self-supporting-type dispensing outer packaging container has a ship-bottomed bottom, and the top has a chuck structure that can be opened and closed to replace a non-self-supporting liquid-filled inner package. Being
(15) The self-supporting dispense outer packaging container has a bottom portion of a ship bottom shape, and the top portion is made of flexible plastic, paper or Consists of a package with a metal dispenser function,
Is a more preferable solution.

According to the present invention, the tear guide rod for pulling out the nozzle provided in the self-supporting dispense outer packaging container (hereinafter simply referred to as the outer packaging container) is arranged at a substantially center corresponding to the dispensing passage portion of the film check nozzle. By making the shape concave at the position, bending of the outer packaging container along the tear guide rod is suppressed, and therefore deformation of the film-like check nozzle located inside thereof can be prevented. In addition, the tear guide rod has a concave shape at a substantially central position corresponding to the dispensing passage portion of the film check nozzle, so that the tightening of the film check nozzle from the outer packaging container becomes weak, and the dripping Can be suppressed.

Moreover, in the present invention, the induction flaw tear argument, the upper seal portion upper and lower seal portions of the film-shaped non-return nozzle is formed so as to curve the nozzle tip side, further, pouring of the film-shaped non-return nozzle In the middle position corresponding to the passage portion, it is formed so as to be recessed toward the nozzle base end side, so that dripping can be effectively suppressed and the bottom of the film check nozzle is Since it will be supported by the packaging container, it is possible to suppress the bending and distortion of the film check nozzle, thereby improving the directionality of the discharge and making the aim of the discharge position accurate.

  Furthermore, in the present invention, both corners of the bottom of the bottom of the self-supporting dispensing outer packaging container are chamfered, the radius of curvature R is set to 8 mm or more, and the bottom has a gently curved shape with a downward convexity. As a result, it is possible to secure a self-standing standing structure of the liquid-filled packaging structure.

It is a front view which shows one Embodiment of the liquid filling packaging structure which concerns on this invention. It is a figure which shows the tearing-opening method of the liquid filling packaging structure of the said embodiment. It is a front view which shows one Embodiment of the outer packaging container which comprises the liquid filling packaging structure of the said embodiment. It is a basic diagram which illustrates the uneven | corrugated processing area | region of the packaging bag main body used for the liquid filling packaging structure which concerns on this invention. It is an expanded sectional view of the uneven | corrugated processing area | region of FIG. It is a front view of the state which provided the coating layer in the film-like non-return nozzle of the flexible packaging bag used for the liquid filling packaging structure which concerns on this invention. It is a perspective view which shows one Embodiment of the liquid substance filling inner package which comprises the liquid substance filling packaging structure which concerns on this invention. It is an expanded sectional view of the opening opening position of the film-like check nozzle of the flexible packaging bag used for the liquid filling packaging structure concerning the present invention. It is a front view which shows other one Embodiment of the liquid filling packaging structure which concerns on this invention. It is a front view which shows other one Embodiment of the liquid filling packaging structure which concerns on this invention. It is a figure which shows the shape of the tear induction | guidance | derivation flaw of the liquid filling packaging structure used in the Example.

Hereinafter, the present invention will be described with reference to typical embodiments.
One embodiment of the liquid-filled packaging structure A according to the present invention is, as illustrated in FIG. 1, a film shape in which a liquid or viscous packaged material is sealed in a soft flexible packaging bag. It is comprised from the liquid substance filling inner packaging body 8 which has the non-return nozzle 1, and the dispensing outer packaging container 9 for accommodating and holding this inner packaging body 8. FIG.

  The liquid-filled inner package 8 is composed of a soft flexible packaging bag, and since the package itself is usually not self-supporting or formable, it is necessary to transport, store, display, use, etc. the packaged item. A cylindrical self-supporting dispensing outer packaging container 9, for example, a hard container, or a bag-like container such as a standing pouch, which is stored and held. It becomes.

  And in the overhanging small bag part 9a which surrounds the film-like check nozzle 1 located inside provided on one side part upper part of the self-supporting type outer packaging container 9, the tear opening 1a of the film-like check nozzle 1 A tear guide rod 15 formed by opening an I notch, a V notch, a U notch, a base notch, a diamond cut or the like is provided on the nozzle base end side of the position of the nozzle, and the guide rod 15 is accommodated therein by tearing and opening the guide rod 15. The protruding portion of the film-like check nozzle 1 protruding from the non-self-supporting liquid material-filled inner package 8 is exposed, and the nozzle opening 1a is further opened for use.

In liquid product filling and packaging structure A of this embodiment, the tear induced flaw 15, the concave shape at the substantially central position corresponding to the pouring path portion of the non-return nozzle located inside the protruding sachet portion 9a There is a first feature. By adopting this configuration, it is possible to suppress the overhanging sachet portion 9a from being bent along the tear guide rod 15, and at the same time to prevent the film-like check nozzle 1 housed therein from being bent, thereby improving the discharge performance. be able to. That is, in the case of the conventional linear tearing guide bag, the overhanging sachet portion 9a is easily bent along the tear guide bag during handling such as transportation and storage, and accordingly, the liquid-filled inner packaging stored inside Even the film-like check nozzle 1 of the body 8 could be bent or deformed.

  As will be described in detail later, the self-sealing check function of the film check nozzle 1 is exerted by the capillary action of a wet packaged product (liquid) that stays between a pair of overlapping front and back laminated films. The higher the flatness (flatness) of the laminated film, the better the wettability, the strong capillary action, and the high non-return effect. Therefore, bending or deformation of the check nozzle 1 may make it difficult to sufficiently prevent outside air from entering the packaging bag body, and may not be able to effectively exhibit the self-seal check function. It is necessary to suppress it.

Further, the liquid product filling and packaging structure A of this embodiment, by a tear-induced flaw 15 and a substantially central position is recessed shape, a film-shaped non-return nozzle 1 is exposed by tearing open of the induction flaw 15 The tightening from the outer packaging container 9 to the discharge passage portion is weakened, and the discharge performance is improved. On the other hand, there is an effect that the dripping from the opening end of the film check nozzle 1 hardly occurs.

Furthermore, the inventors experimented on the influence of the shape of the tear guide rod 15 on the liquid dripping and the film-like check nozzle 1 and obtained experimental results as shown in Table 1.

As a result, the induction flaw 1 5 tear, it was found that it is preferable to form the waveform as shown in FIG. That is, the waveform of the tear guide rod 15 is formed so as to bend outward (nozzle tip side) in the upper seal portion and the lower seal portion of the film check nozzle 1, thereby bending the check nozzle 1. On the other hand, at the middle position corresponding to the dispensing passage 13 of the check nozzle 1, it is formed so as to be recessed toward the inner side (nozzle base end side), so that the discharge performance and dripping The effect that it is possible to improve the occurrence of this occurs.

  In addition, in the liquid filling and packaging structure A of the present embodiment, a wide-area seal portion 9b is provided at the lower portion of the overhanging sachet portion 9a of the outer packaging container 9, and the seal portion 9b is pinched with fingers to face upward from below. Alternatively, the tear guide rod 15 can be opened by pulling downward from above. In particular, as shown in FIG. 2, when the seal portion 9 b is pulled upward from the lower side and opened, the opening direction of the tear guide rod 15 is reversed to the film-like position located inside the outer packaging container 9. Since the opening direction of the stop nozzle 1 can be opposite to the opening direction (from top to bottom), the film-like check nozzle 1 can be prevented from being unintentionally opened simultaneously with the opening of the tear guide rod 15. it can.

  Further, as shown in FIG. 1, a gap 23 of 3 mm to 10 mm may be provided between the lower edge of the film-like check nozzle 1 and the inner edge of the seal part of the adjacent self-supporting dispense outer packaging container 9. preferable. This is because the inner package 8 may sink downward due to its own weight after opening the tear guide rod 15, and at this time, the bottom of the film-like check nozzle 1 is connected to the seal portion of the adjacent outer packaging container 9. This is to prevent the film-like check nozzle 1 from generating vertical wrinkles or deformation. The reason why the gap 23 is set to 3 mm to 10 mm is that the above effect cannot be expected if it is less than 3 mm, and if it exceeds 10 mm, the outer packaging container 9 becomes too large.

  Further, in the conventional outer packaging container, when the liquid filling inner package is suspended and stored, the outer packaging container is pulled in the swelling direction due to the swelling of the liquid filling inner packaging body, and the bottom rectangular shape is formed. Both corners hit the floor, and the center of the lower end of the outer packaging container was lifted, and the self-supporting stability was poor.

  Therefore, in the liquid-filled packaging structure A of the present embodiment, as shown in FIG. 3, both the corners of the bottom of the ship bottom shape of the outer packaging container 9 are chamfered so that the bottom exhibits a gently curved shape with a downward convexity. By doing so, both corners of the bottom part do not touch the floor surface and the entire lower end of the outer packaging container 9 is attached to the floor surface, so that the liquid-filled packaging structure A can stand independently and stably stand. can do.

  In addition, it is preferable to chamfer both the corners of the bottom of the ship bottom shape of the outer packaging container 9 so that the curvature radius R is 8 mm or more, and more preferably in the range of 8 mm to 20 mm. In particular, the radius of curvature R is preferably formed so as to gradually decrease toward the bottom of the outer packaging container 9. The reason why the radius of curvature R is 8 mm or more is that when the radius of curvature is less than 8 mm, both corners of the bottom of the ship bottom hit the floor and the central portion of the outer packaging container 9 is lifted.

  By the way, the liquid filling inner packaging body 8 constituting the liquid filling packaging structure A of the present embodiment is either one of the packaging bag body 2 made of a soft laminated film of two layers or three layers. Preferably, two laminated films (a pair of front and back) that are softer and thinner than the bag body 2 and have a high degree of flatness are overlapped and face each other at the upper part of the side edge portion, and formed between the films overlapping in a flat manner. In the pouring passage 13, a liquid material is interposed, so that a non-returning nozzle 1 (capable of liquid pouring as disclosed in JP-A-2005-59958) is configured to exhibit a non-return function by capillary action. The outlet nozzle) is welded and attached in a state of projecting in the side portion and obliquely upward direction, or formed integrally with the packaging bag body 2.

  Moreover, the said film-like check nozzle 1 made the sealant layer which is the outermost layer of the laminated | multilayer film which comprises the nozzle 1 face the inner surface (sealant layer) of the side part upper part of the packaging bag main body 2, for example. In this state, the sealant layers at the nozzle base end portions are fused and joined so that the pouring passage 13 provided in the nozzle communicates with the inside of the bag body 2. For example, in this nozzle, a thermoplastic uniaxially or biaxially stretched base film layer and a laminated film formed by laminating a sealant layer on both the inner and outer sides sandwiching the thermoplastic film are used as a pair of front and back surfaces. The sealant layers facing each other, or the laminated film that is a pair of front and back folded by half-width of a single laminated film, are fused together in the peripheral part excluding the base end part as a whole The pour-out passage 13 is formed in a substantially wedge shape and the center portion is not fused.

  Although this film-like check nozzle 1 depends on the size of the flexible packaging bag, in general, when the packaging bag body 2 is 100 to 150 mm wide and 150 to 200 mm long, the protruding length from the packaging bag body The length X is about 30 to 80 mm, and the nozzle width Y at the tip is about 20 to 40 mm.

  And although the packaging bag main body 2 is different depending on the weight of the article to be packaged, in general, a thick laminated two-layer film of NY15 / PE60 is used. For example, it is preferable to use a thin three-layer laminated film composed of a combination of PE20 / NY15 / PE20, and the thinner the better, the weaker the film, the better the check function. Become. And the non-return effect with a higher flatness (flatness) is obtained for a pair of laminated front and back laminated films. However, this flatness is distinguished from the concavo-convex structure showing the surface roughness described later, and is a form without large undulations and wrinkles throughout the film. The so-called concavo-convex structure is a small unit in the flat film. Is formed.

  Such a film-like non-return nozzle 1 is composed of a pair of laminated films (for example, a polyethylene layer, a polypropylene layer, ethylene vinyl alcohol (EVA), an ionomer, EVOH, etc.) of two overlapping sheets (facing the front and back). An 80 μm thermoplastic resin that can be heat sealed is used as a heat seal material on the inner surface of the packaging bag body, for example, a sealant material typified by polyethylene or polypropylene. That is, these sealant materials are fused together by, for example, heat sealing, high frequency sealing, impulse sealing, or the like, leaving the inner edge portion so as to have a required shape (wedge shape). This can be manufactured.

As the base film (supporting base material) of the film check nozzle 1, biaxially stretched films and uniaxially stretched films generally used for liquid packaging films such as nylon, polyester, polypropylene, polyethylene terephthalate and EVOH are 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 the surface of any one of these films. As a result, the inner surfaces of the liquid pouring nozzles wetted to the package are well adhered 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 bag. In addition, in order to maintain the flexibility of the film valve, the thickness of the base film is preferably 5 μm or more and 30 μm or less, and the thickness of the gas barrier layer is preferably about 0.5 μm to 20 μm.

  The film-like non-return nozzle 1 made of a laminated film having a structure of at least three layers (sealant layer [surface material] -base film layer-sealant layer [backing material]) manufactured as described above is formed at the base end portion thereof. The sealant on the inner surface of the opening provided on one side of the packaging bag body made of a soft laminated film (mainly two layers) without causing the sealant layer on the outer surface to be fused between the inner surfaces. It is fused by heat sealing to a layer (sealant layer made of the same kind of film) and attached in a state protruding from the packaging bag body. Thereby, with respect to the packaging bag main body 2, a flexible packaging bag provided with the film-like check nozzle 1 which protruded outward from the upper part of the side part, the top part, etc. is obtained.

  By the way, when the outer surface of the base end portion of the film-like check nozzle 1 is fusion-bonded to the inner surface of the side opening portion of the packaging bag body 2, a dispensing passage on the inner surface of the film-like check nozzle 1 is used. In order to prevent mutual fusion of the sealant layers to be 13, a release sheet having a higher melting point or not thermally melted is inserted into the proximal end portion of the nozzle 1 connected to the pouring passage 13, The melting temperature of the sealant layer film on the inner surface of the nozzle 1 can be changed by changing the fusing temperature of the respective sealant layers on the inner and outer surfaces, for example, by changing the material or by changing the extrusion laminating conditions. It can be realized by making it higher than that of the sealant layer film on the outer surface.

  For example, the inner side [backing] sealant film is a thermoplastic resin such as polypropylene or polyethylene, and preferably has a melting point about 20 ° C. higher than the melting point of the outer side [front material]. Is preferably a film that can be heat sealed at a temperature higher than the heat seal temperature of the sealant layer of the packaging bag body 2. This is to prevent the sealant film on the inner surface of the film-like check nozzle 1 from being heat-sealed when the film-like check nozzle 1 and the packaging bag body 2 are fusion-bonded by heat sealing. is there. In addition, in order to maintain the flexibility of the film-like check nozzle 1, the thickness of the inner surface side [backing] sealant film is preferably, for example, 5 μm or more and 80 μm or less.

The relationship between the film-like check nozzle 1 and the packaging bag body 2 is as described above, but the film-like check nozzle 1 is substantially the same as the thickness of the laminated film used for the packaging bag body 2. Rather, it is desirable to use a thin laminated film. However, it is possible to apply even in the opposite case.
For example,
(A) Film check nozzle: PE10 / PET9 / PET10 = 20 μm thickness, packaging bag body: PET12 / PE40 = 52 μm thickness (b) Film check nozzle: PE15 / PET12 / PE15 = 42 μm thickness, packaging bag Main body: PET12 / PE30 = 42 μm thickness (c) Film-like non-return nozzle: PE50 / PET25 / PE50 = 125 μm thickness, packaging bag main body: NY15 / PE30 = 45 μm thickness etc.

  Here, liquid such as soy sauce in the packaging bag body 2, liquid seasoning containing solids such as sesame, soup and other liquid packages (even if a slightly large solid is enclosed in these liquids) It is preferable that the filling of the film-like check nozzle 1 is performed at the same time as the bonding (heat sealing) process to the packaging bag body 2 or after the bonding process. For filling and packaging of such a liquid material, for example, filling is performed by a submerged sealing method (heat sealing of the film from above the filling liquid so that air, nitrogen gas, etc. are not mixed), or The filling is performed by sufficiently removing the gas from the inside of the packaging bag body 2 by, for example, evacuating the bag after filling the package. The reason is that, in order to cause the non-return action of the film-like non-return nozzle 1, it is necessary to fill and seal the packaged items in the bag while being sealed in the atmosphere. This is also preferable in preventing oxidation of the liquid package.

  By the way, the pouring of the liquid package in the liquid-filled inner package 8 is a predetermined opening portion specified by the addition of a tearing guide ridge or notch formed near the tip of the film check nozzle 1. By opening the nozzle 1 and then tilting the main body of the liquid-filled inner package 8 so that the nozzle opening (pouring spout) faces downward, This can be done by the extrusion pressure of the contents. In this case, the film-like non-return nozzle 1 made of a soft laminated film is a laminated film on the front and back sides by the action of the water head pressure of the article to be packaged or by pressurizing the body of the package filled with liquid material by fingers. Swell apart from each other to form the pouring passage 13, and at the same time, the nozzle opening is also opened, thereby pouring out the package.

  In addition, when pouring a package through the nozzle opening (spout) of the film-like check nozzle 1, the packaging bag body 2 made of a soft laminated film is used regardless of the pour of the package. Since there is no suction (backflow) of outside air by the check function of the film-like check nozzle 1, the packaging bag body 2 contracts or collapses by an amount corresponding to the volume of the poured bag.

  As described above, the liquid-filled inner package 8 in a state where the liquid material is filled in the flexible packaging bag constituted by the packaging bag body 2 formed by projecting the film-like check nozzle 1 as described above. The required amount of the package can be poured out from the bag by tilting, but if the inner package 8 is returned to the original standing posture, the package will flow out from the nozzle opening. Stop. Due to the stoppage of the outflow, the liquid packaging object always remains (residues) and becomes wet due to the capillary action in the dispensing passage 13 of the film check nozzle 1. Therefore, at the same time as the stop, the inner surfaces of the laminated films are in close contact with each other by the capillary action, and the nozzle opening provided at the nozzle tip remains in close contact, and the outside air enters the packaging bag body 2. Will surely prevent intrusion. Therefore, in the packaging bag provided with such a film-like check nozzle 1, the liquid packaged material filled in the bag is not limited to the outside air during and after the pouring as well as before the pouring. It is completely shielded from the contact of the bag, and is protected, so that oxidation, fouling, etc. of the packaged items in the bag are effectively prevented.

  The film structure of the packaging bag body 2 includes a base film layer located on the outer surface of the packaging bag body 2 and a sealant layer located on the inner and outer surfaces, respectively, and a base film layer and a sealant layer of the same type as those of the film check nozzle. can do. However, when the film-like check nozzle 1 and the packaging bag body 2 are formed separately, an intermediate layer is interposed between the base film layer and the sealant layer, unlike the film for the nozzle 1. You may let them. Preferably, the sealant layer forming the inner surface of the packaging bag body 2 made of a soft laminated film is made of the same kind of resin material as the outermost sealant layer of the nozzle 1. According to this, the fusion-bonding strength between the nozzle 1 and the packaging bag body 2 can be sufficiently increased.

  For example, when the packaging bag body 2 is formed by a laminated film having a two-layer or three-layer structure, the uniaxial or biaxially stretched base film of the laminated film is a polyethylene terephthalate film layer (PET layer) having a thickness of 8 to 30 μm. Or a nylon resin film layer (NY layer), ethylene vinyl alcohol (EVOH), or the like. Moreover, the sealant layer of the laminated film used for the packaging bag body 2 may be composed of an unstretched PE layer or PP layer having a thickness of 10 to 60 μm, an EVA layer, an ionomer layer, an EVOH layer, or the like.

  By the way, when the thickness of the base film layer of the packaging bag body 2 is less than 8 μm, water vapor impermeability, gas barrier properties and the like may be insufficient. On the other hand, when the thickness exceeds 30 μm, The bending strength becomes too large, and the adhesion between the inner surfaces of the nozzles 1 after stopping the pouring of the packaged goods may be impaired. Moreover, about the sealant layer, when the thickness is less than 10 μm, there is a possibility that sufficient seal strength cannot be secured, and when it exceeds 60 μm, the bending strength of the laminated film may be excessively increased. As long as this thickness is compensated in total, each sealant layer can be composed of two or more films.

  Moreover, as a laminated | multilayer film used for this packaging bag main body 2, since a fixed amount of liquid material is filled, a strong thing is calculated | required. In the present invention, the bending strength per unit width (15 mm) of the laminated film, in other words, the waist is measured using a waist measuring device as disclosed in FIG. 10 of JP-A-2005-59958. It is preferable that the measured value is 40 to 300 mN. If the waist is less than 40 mN, the stability of the packaging bag itself is inferior to the stability of the packaging bag itself, and the strength of the packaging bag itself cannot be denied. There may be a shortage. On the other hand, if it exceeds 300 mN, the entire check function including the film check nozzle 1 may be lowered regardless of the laminated structure of the laminated film.

With respect to the packaging bag body 2 having such a film configuration, the flexible packaging bag formed by projecting the above-described film check nozzle 1 corresponds to the case of repeated dispensing, particularly in the case of re-pouring. Even so, it is desirable to allow a predetermined amount of smooth and controlled pouring as in the first case.
Therefore, in the present invention, as shown in FIGS. 4 (a) to (d), at least one inner surface of the packaging bag body has a concavo-convex structure, that is, with respect to the laminated films on the front and back sides, respectively. Except for (horizontal seal, vertical seal, nozzle-to-body seal, and nozzle peripheral seal), the surface is roughened by embossing, blasting, knurling, random wrinkling, vertical / What has the concavo-convex structure 14 to which any of horizontal stripe processing etc. was given is used. The reason for excluding the seal portion is that if there are irregularities in the seal portion, a seal failure will occur.

  The reason why such a concavo-convex structure 14 is formed in the packaging bag body 2 is that the non-return action of the film-like check nozzle 1 after the liquid package is poured out by the action of the film-like check nozzle 1. Not only the inside of the packaging bag body 2 is also prevented from entering the outside air (reverse flow), and the liquid crystal intervenes between these laminated films, and the capillarity works and is in a tight contact state (return action). It becomes. In particular, in the packaging bag body, the film shrinks or the bag body 2 is crushed and deformed by the volume corresponding to a considerable amount of the poured liquid, and is strongly fused.

  As a result, when it is going to pour out the filled liquid to be packaged again through the film-like check nozzle 1, there is a sufficient amount of liquid (liquid height) in the packaging bag body (water head pressure). Smooth pouring is compensated to some extent, but when the amount of liquid in the bag decreases, the water head pressure decreases, and the pour pressure loses the adhesive force due to the capillary action between the laminated films. Smooth pouring and liquid return become impeded.

  In particular, when the amount of liquid in the bag is reduced, wrinkles are generated in the packaging bag body, this causes a weir-damping action, the liquid flow stagnates, and the liquid flow path is cut off, making smooth pouring difficult. In this case, too, if the pressure applied to the bag body is increased, an unintended excessive amount may be discharged, and stable dispensing cannot be ensured.

  In order to eliminate such adverse effects, the present invention slightly relaxes the adhesive force of the laminated film based on the capillary action in the longitudinal and lateral ranges of the packaging bag body 2 at least in the vicinity of the film-like check nozzle 1. In order to prevent flow stagnation, stagnation and clogging and to secure a flow path, that is, to reduce the non-returning action of the film-like nonreturning nozzle 1 by the capillary action generated in the packaging bag body 2. In order to alleviate, it is preferable that at least one of the laminated films on the front and back of the packaging bag body 2 is preferably provided with a concavo-convex structure 14 made of a linear or curved stripe pattern, particularly in the packaging bag body 2 portion. Try to weaken the capillary action.

  The concavo-convex structure 14 added to the laminated film is a gap G between the laminated films on the front and back of the packaging bag main body 2 (excluding vertical seal, horizontal seal, and a bonded seal portion between the nozzle and the main body), that is, the thickness of the liquid layer. However, the adhesion force based on the capillary action described above is usually generated at about 2 to 5 μm, but one or both of the laminated films are embossed, for example, and the gap between the films is preferably 20 μm or more, preferably Concavities and convexities are provided so as to be 30 μm or more, more preferably 50 μm or more. In this case, the capillary action is reduced, resulting in a decrease in the adhesion between the laminated films. As a result, the flow path is always secured at least at the location where the concavo-convex structure 14 is provided, and even when the amount of liquid in the bag is extremely reduced, the liquid package is always smooth. Is guaranteed.

  The above uneven processing is preferably processing that gives an irregular pattern in addition to a regular pattern using an embossing roll (Japanese Patent Laid-Open No. 2008-12669) having an uneven pattern such as a cylinder or a prism. Further, in place of such embossing, random wrinkling, blasting, knurling, vertical and horizontal stripes may be applied. As shown in the cross-sectional view of the striped structure in FIG. 5A and the dimple-shaped uneven structure in FIG. 5B, the fixed positions G of about 20 μm are formed so that the uneven positions are shifted and fitted. A combination is desirable. For example, in a bag making machine, a hot roll (70 to 80 ° C.) is formed before bag making (before vertical sealing) or after bag making.

  The inventors filled the packaging bag body 2 having a laminated film structure of Tech Barrier NY15 vapor deposition surface / vapor deposition surface Tech Barrier PET12 / XA-HD40 with a soy sauce as a material to be packaged in a liquid, and this packaging bag body 2 That is, an experiment was performed to measure the remaining amount when the liquid-filled inner package 8 is tilted and no liquid comes out. As a result, as shown in Table 2, it was found that the effect was remarkable when a laminated film subjected to unevenness processing was used. In this experiment, in the vicinity of the film-like check nozzle 1 of the packaging bag body 2, a striped uneven pattern and an embossed uneven pattern are provided, and a packaging bag body 2 that is not subjected to the uneven process Compared. As a result, it was found that in the example suitable for the present invention, the remaining amount is small, it can be used up to the end, and the pouring can be performed smoothly.

  In addition, the uneven structure 14 includes the packaging bag body 2 and the dispensing passage 13 of the film-like check nozzle 1, that is, at least a part of the non-seal portion, for example, the formation position thereof is at least the nozzle attachment position side of the body The striped uneven structure provided on the film check nozzle 1 and the stripe uneven structure provided on the packaging bag body 2 are crossed so as to continue from the vicinity along the side edge to the film check nozzle 1. And may be provided in a substantially (consecutive) continuous manner. Thus, not only the packaging bag main body 2 but also the film-like check nozzle 1 is provided with a concavo-convex structure, which is effective for securing a flow path during re-pouring. The concavo-convex structure 14 is a laminated film obtained by subjecting a roughened surface of an opposing sealant film to dry lamination or coextrusion as a planar shape, island shape, or stripe shape. Can also be realized.

  By the way, the concavo-convex structure 14 for ensuring smooth pouring of the liquid package filled in the liquid in the packaging bag main body 2 is the opening position of the slit of the film check nozzle 1 from the packaging bag main body 2. It is effective to consist of a series of vertical stripes that are continuous in a straight line or a curved line until (preferably up to a position 5 mm or more away from the tear line). In particular, in order to form a smooth route in which the liquid material does not stagnate from the bottom of the bag to the film-like check nozzle 1 even when the liquid package in the packaging bag body 2 is small, the packaging bag Continuing from the main body 2 to the slit opening of the film-like check nozzle 1 is effective in eliminating midway damming caused by film breakage.

  On the other hand, the provision of such a concavo-convex structure 14 may sometimes inhibit the essential check action of the film check nozzle 1 in some cases. Therefore, while reducing the adhesive force due to the capillary action, the wettability of the surface is improved for the laminated film, and the surface tension when a liquid is interposed between the films is reduced, thereby improving the wet state. Therefore, it is necessary to improve the check function described above together with the route creation by the concavo-convex structure 14.

  For example, the inner surface of the dispensing passage 13 provided in the film check nozzle 1, that is, the inner surface of the passage made of a sealant layer, is exhibited by the liquid package remaining in the passage due to capillary action. In order to make the check function more reliable, a wetting treatment layer obtained by performing the following wetting treatment is provided on the inner surface of the extraction passage 13 of the film-like check nozzle 1. As the wetting treatment, the surface of the laminated film sealant film made of PE, PP, EAV, ionomer, etc. is subjected to a wetting treatment comprising corona discharge treatment, UV ozone treatment, plasma treatment, flame treatment, etc. This process improves the wettability of the film by a synergistic effect of the physical surface modification and chemical surface modification by the generation of polar functional groups.

Then, the inventors verified the action effect of the wetting treatment layer. Table 3 shows the results. That is, for a film-like check nozzle having a three-layer structure of LLDPE15 / PET12 / LLDPE20, the inner surface of the sealant film was subjected to corona discharge treatment (discharge condition: discharge amount: 81.7 W · min / m ² ). . About this film, when the wetting tension of the film was measured with a wetting reagent, what was 32 N / m before the treatment showed 56 N / m after the treatment, and the contact angles for water, soy sauce, ponzu, and oil were As shown in Table 3, the cohesive force of the liquid, that is, the surface tension (S) is weakened, the contact angle (θ) is clearly reduced and the wettability is improved, and the effectiveness of this treatment has been confirmed. It was.

Below, a specific form is demonstrated according to drawing about the liquid filling internal packaging body 8 which comprises the liquid filling packaging structure A of this embodiment.
FIG. 7 is an embodiment of the liquid-filled inner package 8, which is an example in which a film-like check nozzle 1 protrudes from, for example, the upper left edge of the packaging bag body 2 made of a soft laminated film. The sealant layer on the inner surface side of the joint portion of the bag body 2 is the outermost sealant layer at the base end of the film check nozzle 1, preferably a sealant made of the same resin material as the sealant layer of the packaging bag body The layers are overlaid and heat sealed and fusion bonded. In some cases, the sealant resin on the inner surface of the spout passage 13 of these fusion-bonded portions is assumed to have a high melting point, and this portion is melted at a low temperature so that the bonding strength is weak (by pressing the trunk portion of the bag body). It is preferable to form a temporary sealing portion 12 that is easily peeled off by applying an internal pressure and passes between the nozzle and the main body.

  Here, the film-like check nozzle 1 is formed on both sides of a thermoplastic base film layer, for example, a biaxially stretched PET layer or NY layer having a thickness of 5 to 40 μm, preferably 10 to 30 μm, and the base film layer. Laminated films F1 and F2 arranged on the respective sides of the front and back, each comprising three layers of laminated sealant layers, for example, an unstretched PE layer or PP layer having a thickness of 5 to 80 μm, preferably 10 to 50 μm That is, two laminated films such as a wedge shape having the same contour shape, or a laminated film formed by folding the front and back at the center portion with the inner surface side sealant layer facing each other, the base end side is It is possible to form a bag by fusing each other except for each side part, preferably by heat sealing, as shown by hatching in the figure.

  By the way, such a film-like non-return nozzle 1 is shown in FIG. 8 as an enlarged cross-sectional view along the line AA in the nozzle width direction of FIG. 4 is a three-layer structure of a base film layer 5, 5 ′ and respective sealant layers 6, 6 ′, 7, 7 ′ laminated on both sides of the base film layer 5, 5 ′. The inner surface side sealant layers 6 and 6 'are preferably disposed over a predetermined width, for example, a width of 0.5 to 3 mm, preferably 1.0 to 2.0 mm, in a peripheral portion excluding the base end side. Can be easily and quickly manufactured by fusing to a desired shape (wedge shape) by heat sealing.

  In order to provide a check function, it is preferable that the film-like check nozzle 1 is flattened by stacking as flat sheets as possible. And in this nozzle base end part, the outer surface side sealant layer 7 is suitably bonded to the packaging bag body 2 by fusing it to the inner surface (sealant layer) of the packaging bag body 2 preferably also by heat sealing. And it can be reliably and easily joined.

  As shown in FIG. 6, the outer surface of the film check nozzle 1, that is, the outer surface of the outer sealant layers 7, 7 ′ from the tear line (scheduled opening portion) to the base end side is disposed. It is preferable to provide a water-repellent or oil-repellent coating layer (water-repellent or oil-repellent coating layer) 10 for preventing water leakage and improving liquid breakage along at least the opening end and the lower edge. At the same time, as described above, the wetting treatment layer 18 for assisting the check function is provided on the inner surface of the inner sealant layer 6 of the film check nozzle 1, particularly the inner surface of the dispensing passage 13.

  The film-like check nozzle 1 configured as described above is used at the same time as filling the package bag body 2 made of a soft laminated film with the liquid seal in the package or prior to filling the package with the liquid seal. The sealant layers 7 and 7 ′ on the outer surface of the base end of the nozzle 1 are preferably heat-sealed on the inner surface of the packaging bag body 2 at the fusion part between the sealant layers on the side of the packaging bag body 2. Is formed into a part of the packaging bag by fusion bonding, and the packaging bag body 2 is protruded laterally from the upper end portion in FIG.

  In the liquid-filled inner package 8, the film-like non-return nozzle may fill the flexible packaging bag with a liquid package so that gas does not enter the bag by filling with a liquid seal. This is necessary for causing the self-sealing check action of 1. However, sometimes, a very small amount of outside air may enter during pouring, and the gas contained in the package itself may later be generated in the bag. In order to store such gas in position and to ensure non-return dispensing from the film-like check nozzle 1, the upper part of the packaging bag body 2 of the present invention, that is, above the film-like non-return nozzle 1. It is preferable to provide one or more gas reservoir spaces 11 as shown in FIG. 6 in the bag width direction in the upper lateral seal portion at the position as required.

Such a liquid-filled inner package 8 takes a full form as illustrated in FIG. 7 by filling a liquid package into the packaging bag body 2, preferably in a liquid-sealed seal under evacuation. However, as such, it usually does not have a self-supporting or fixed form, and therefore, in the transportation, storage, display, use, etc. of a packaged article, one embodiment is shown in FIG. 1 and described in detail later. In addition to the outer packaging container 9 having a self-supporting dispensing function, for example, a hard container including a paper-made one, it is housed in a standing pouch 9, and the pouch 9 provides self-sustainability and formability to provide a liquid form of use. The product-packaging structure A is obtained.
Note that the dispensing in this embodiment is performed by increasing the tilt angle of the self-supporting dispense outer packaging container (hereinafter referred to as an example of a “standing pouch”) 9 in accordance with the decrease in the package contents in the bag. Is called.

  The liquid material-filled inner package 8 is used in a state in which the nozzle is opened, that is, the spout is secured by tearing or cutting away the tip from the tear-predicted portion 1a of the film check nozzle 1. For example, in a posture in which the standing pouch 9 is tilted, the liquid package in the package body 8 is poured out without intruding or sucking outside air from the spout provided in the film check nozzle 1. Can do. On the other hand, with the stoppage of the pouring based on the standing return of the standing pouch 9, the inner surface of the film-like check nozzle 1 is under the intervention of a liquid film made of a liquid package to wet the inner surface. This is brought into close contact with the whole to reliably prevent outside air from entering the packaging bag body 2.

  According to this, in-packaging body 8 obtained by filling the packaging bag main body 2 with a liquid packaging material in a liquid seal, the shrinkage or crushing deformation corresponding to the amount to be packaged is applied, It becomes possible to pour without taking in outside air into the packaging bag body 2 at all, and after the pour is stopped, the check function of the inner surface of the pour passage 13 of the film check nozzle 1 Therefore, it is possible to prevent the outside air from entering the packaging bag body 2 and to prevent the object to be packaged remaining in the packaging bag body 2 from being contaminated or oxidized by the outside air.

  After the required amount of liquid package has been dispensed, the standing pouch 9, which is a self-supporting dispensing outer packaging container, is returned to the upright position to stop the dispensing, and at the same time, the film check nozzle 1 The spout provided at the tip of the spout is automatically closed.

  Here, the close contact due to this check function of the film-like check nozzle 1 is as described above, the film-like check nozzle 1 is released from the water head pressure, 4 is restored to the original shape at the time of manufacture of the film-like check nozzle 1, and the films 3 and 4 on the front and back sides are decompressed when the packaged goods in the film-like check nozzle 1 are returned to the packaging bag body 2. By being in the atmosphere, the inner surfaces of the soft films (sealant layers 6 and 6 ') are mutually attached over the entire nozzle width under the intervention of the capillary action of the liquid package attached to this surface. This is performed by negative pressure adsorption or the like. Further, the close contact between the films based on such a self-seal check function is more reliable when the packaging bag body 2 that has been crushed and deformed tends to depressurize the inside of the packaging bag body 2 based on the inherent elastic restoring force. Will be maintained.

  Therefore, in the liquid-filled packaging structure 8 of the present embodiment, as described above, the laminated films 3 and 4 of the material are produced at the time of bag making or manufactured so that the inner surface of the packaging bag body 2 mainly shows the uneven structure 14. It is preferable to perform hot pressing after the bag, etc., and by relaxing the capillary action under the liquid substance interposition between the laminated films generated by this, a smooth flow of the liquid package is ensured as a whole, and the pouring is performed. It can be easily done to the end.

  On the other hand, the use of the concavo-convex structure 14 may cause excessive pouring of the liquid package from the nozzle. In order to prevent this, in the present invention, as shown in FIG. A liquid reservoir 1b for dispensing amount control is provided at the lower edge of the stop nozzle 1, particularly adjacent to the nozzle mounting base end (packaging bag body), and the discharge flow is temporarily retained in this zone. Thus, it is a preferred embodiment to prevent unintentional excessive pouring and to provide stable dispensing.

  By adopting such a liquid reservoir 1b, the liquid article to be packaged guided from the packaging bag body 2 to the dispensing passage 13 of the film check nozzle 1 is temporarily retained in the liquid reservoir 1b, and the discharge flow rate Is generally lowered and then heads toward the tear opening, so that the excessive outflow can be avoided.

  Further, in conjunction with the formation of the liquid reservoir portion 1b, more preferably, as shown in FIGS. 1 and 6, the discharge flow is introduced into the seal portion at the base end portion of the discharge passage 13 of the film check nozzle 1. A protrusion (formed by a seal) 19 serving as a damming portion for the purpose of rectification may be provided so that a fixed amount discharge can be realized. The protrusions 19 are preferably formed so as to be curved as shown in FIG. 6, thereby preventing excessive pouring due to the damming effect and concentrating the discharge flow of the package on the protrusions 19. Thus, there is no possibility that the seal peels off, and stable quantitative discharge becomes possible.

  Moreover, as shown in one embodiment of the liquid-filled inner package of FIG. 7, the film-like check nozzle 1 has a base end portion at the side portion of the flexible packaging bag body 2, most of which is the upper end. While projecting from the side from the side, the outer surface side is a low-melting point sealant layer, which is fusion-bonded to the high-melting point sealant layer on the inner surface of the packaging bag body 2, while the base end of the film-like check nozzle 1 By using a high melting point film for the partial sealant layer, for example, the temporary sealing portion 12 may be bonded in a relatively low temperature with an adhesive strength that is half or less of the original heat seal strength.

  Here, in forming the temporary sealing portion 12, a high-melting point sealant layer and a low-melting point sealant layer are selectively used. Both of these sealant layers are low-density polyethylene containing linear low-density polyethylene. In addition, the high melting point sealant layer is preferably formed of medium density or high density polyethylene, and the low melting point sealant layer is preferably formed of low density polyethylene. In addition, the selection of the high or low melting point of the polyethylene made of the same material can be realized, for example, by mutually changing the extrusion laminating conditions and the like when laminating the sealant layers.

Here, the base end portion of the film-like check nozzle 1 refers to a position corresponding to the position where the side fusion bonding of the packaging bag body 2 is to be performed, or from the corresponding position to the protruding tip side of the nozzle 1. Although the position can be slightly biased, in any case, the pouring path for the packaged material having a length (about 30 to 80 mm) sufficient for the film-like check nozzle 1 to perform its original function It is necessary to leave the formed portion on the outside of the low temperature fusion portion, that is, the temporary sealing portion 12.
In addition, the temporary sealing part 12 by low temperature fusion | melting is reducing the heating temperature of a heat seal means, pressurization force, and pressurization time compared with the case where a perfect fusion junction part is formed. Can be realized.

  By forming the temporary sealing portion 12 at the base end portion of the film check nozzle 1, the liquid packaged material filled in the packaging bag body is reliably prevented from flowing into the nozzle tip side. Even if the article to be packaged is heated to 50 to 100 ° C., the article extraction passage 13 of the film-like check nozzle 1 is in a direction to expand the extraction passage 13. There is no permanent deformation (blowing deformation).

  Accordingly, the film-like check nozzle 1 can always sufficiently exhibit the function of the film-like check nozzle 1 at the tip end side of the temporary sealing portion 12 and the material to be packaged is poured out from the packaging bag. In this case, it is possible to completely prevent the outside air from entering the packaging bag main body 2 and to fully exhibit the self-seal check function when the packaged article is stopped.

  By the way, when the article to be packaged in the packaging bag body 2 is cooled to near room temperature, when the article to be packaged is poured out from the packaging bag body 2, a load is applied to the packaging bag, for example, in the thickness direction thereof. (Pressure) is applied to cause the temporary sealing portion 12 to be opened, and the tip portion of the film-like check nozzle 1 is broken or cut off to form a dispensing opening. In this state, the packaging bag is tilted. The pouring posture is such that the pouring opening faces downward.

  Here, since the other fusion-bonded portions of the packaging bag excluding the temporary sealing portion 12 are heat-sealed with, for example, twice or more the strength of the temporary sealing portion 12, the temporary sealing portion. Even if a load necessary to open 12 is applied, an unexpected bag breakage does not occur.

  For this reason, the film-like check nozzle 1 part that has not been subjected to the full deformation due to the heated packaged object is used to package the intrusion of outside air into the packaging bag body 2 due to the extraction of the packaged article in the bag. It is possible to effectively prevent the opening of the pouring opening under the deformation of the bag body 2 under the necessary and sufficient opening. In addition, when stopping the pouring of the packaging bag based on the return to the standing posture, the outside air into the main body of the packaging bag is recovered by the self-seal check function by returning the pouring nozzle part wet to the package to the original shape. Can be surely prevented.

  Here, when both the high melting point sealant layer and the low melting point sealant layer are formed of low density polyethylene, or the high melting point sealant layer is formed of medium density or high density polyethylene, and the low melting point sealant layer is formed of low density polyethylene. In any case, it is possible to easily and easily realize the temporary sealing having the sealing strength as expected and the required fusion bonding to the film check nozzle.

In addition, the heat sealing strength of the temporary sealing portion 12 is 0.3 to 3 (N / 15 mm), in particular, 0.7 to 1 (N / 15 mm). While preventing the insufficient opening, it is preferable to open the temporary sealing portion 12 without causing any influence on other fusion-bonded portions.
That is, if it is less than 0.3 (N / 15 mm), there is a possibility that unintentional opening may occur in the temporary sealing portion 12 under the relation with the volume of the liquid package in a heated state, On the other hand, if it exceeds 3 (N / 15 mm), the load required to open the temporary sealing part 12 may have an unexpected influence (bag breaking or opening) on other fusion bonded parts or the like. .

By the way, the load for opening the temporary sealing portion 12 should be in the range of 50 to 350 (N), particularly 100 to 200 (N), without incurring bag breakage at other locations including the sealing portion. It is necessary to prevent accidental opening during transportation and work.
That is, when the opening load is less than 50 (N), there is a possibility that the temporary sealing portion may be opened by the lower packaging bag due to the stacking of the packaging bags filled and packed with the objects to be packaged. ) Or the heat seal strength is too high, other fusion bonded parts may be affected by the load required to open the temporary sealing part.

  According to the study by the present inventors, for example, on the upper side portion of the flexible packaging bag body 2 (NY15 / PET12 / LLDPE40), as shown in one embodiment of FIG. In this case, the laminated structure of the film of the film-like check nozzle 1 is a linear low density polyethylene layer (low melting point sealant layer) / biaxially stretched polyethylene terephthalate layer. / Linear low density polyethylene layer (high melting point sealant layer), and this laminated film is temporarily sealed when heated and pressurized at a cylinder pressure of 300 kPa for 3 seconds with a heat sealer with a cylinder using the heat sheet temperature as a parameter. The heat seal strength (N / 15 mm) of the part is measured with a tensile tester (TENSILON RTG-1300) at a tensile speed of 200 mm / mi. , It was measured under the conditions of the film width 15mm. The results are shown in Table 4.

  Next, another embodiment of the liquid-filled packaging structure A according to the present invention will be described. In this liquid-filled packaging structure A, a self-supporting dispenser outer packaging container 9 accommodates a non-self-supported liquid-filled inner package 8 and supports a self-supporting cylindrical self-supporting dispense outer dispenser. For example, a bag-like container such as a standing pouch 9, and as shown in FIG. 1, at least the lower part is preferably formed of a laminated film having a cylindrical bag shape. A gusset-type self-supporting flexible packaging bag (standing pouch type) that is provided with a gusset portion 16 so as to be self-supporting is suitably used.

  And as this outer packaging container 9, this nozzle of the same shape as the said film-like check nozzle 1 is formed in one edge part used as the position corresponding to the said film-like check nozzle 1, for example, the upper part of a side edge part. For example, a standing pouch 9 having a protruding small bag 9a that surrounds it is preferably used. The outer packaging container 9 is a packaging material having a flexible material, for example, a plastic, paper, or metal dispenser function (a function of pressurizing the packaging bag body portion to pour out an article to be packaged). May be.

  In addition, the outer packaging container 9 having the dispenser function is preferably heat-sealed at the top thereof together with the top of the liquid-filled inner package 8 to be accommodated as shown in FIG. As shown in FIG. 9, the top portion can be opened and closed with a chuck 17 or the like, or the top portion as shown in FIG. It is preferable that the container is stored in a container or can be replaced with another outer packaging container. FIG. 10 shows a case where the perforation 21 is cut off and held in the other container of the flexible packaging bag using the attachment hole 22.

  The self-supporting dispensing outer packaging container 9 is made of, for example, a laminated film including a uniaxial or biaxially stretched base film layer and a sealant layer, and the base film is made of a polyethylene terephthalate film layer or a nylon resin film layer. On the other hand, a material in which the sealant layer takes a form such as a standing pouch using a laminated film made of a polyethylene layer or a polypropylene layer is preferably used. However, in the present invention, as the outer wrapping container, not only the bag-like tending pouch made of such a soft film, but also at least the main body portion includes other self-supporting cylindrical plastic containers and paper (including film laminates). ), Aluminum, stainless steel or the like.

  In the liquid filling and packing structure of this embodiment, after the liquid filling inner package 8 is stored in the standing pouch 9, as shown in FIG. Are heat-sealed and fused together on the upper side of the standing pouch 9 over a part (spot) or the entire width, and stored in a suspended state. In such a case, the liquid-filled inner package 8 filled with the liquid can be held firmly in the standing pouch 9 and has the effect of assisting the smooth outflow of the liquid package. is there. Moreover, in this case, the liquid-filled inner package 8 can be sufficiently protected against various impacts during handling and distribution, and the liquid-filled inner package 8 is displaced. This prevents the occurrence of pinholes, the deformation and breakage of the film check nozzle, and the erroneous opening.

  In addition, after the package body 8 filled with the liquid material is stored in the standing pouch 9, it is in the vicinity of the film-like non-return nozzle 1, in particular, near or above the bottom, or at one or more places on the top of the packaging bag body, Fixing the bottom is effective in effectively acting when the liquid package is smoothly poured out to the end.

  The role of the above-described self-supporting dispensing outer packaging container 9 is to hold the liquid filling inner packaging body 8 to be stored in a self-supporting manner, and in addition, the liquid packaging filled in the liquid filling inner packaging body 8 with a liquid seal. In order to extrude the liquid packaging from the packaging body 8 by pressing the inner portion of the self-supporting dispensing outer packaging container 9 and pressing the inner liquid-filling inner packaging body 8. It has the so-called dispenser function as described above, with the assistance of the part, smoothly sent to the part of the film-like check nozzle and discharged. Therefore, in the present invention, the above-described self-supporting dispense outer packaging container 9 which is flexible and elastically deformed is effectively used.

Four types of liquid-filled packaging structures I to IV having a corrugated tear guide rod 15 as shown in FIG. 11 were made, and the occurrence of dripping and the state of the film-like check nozzle 1 were observed for each. did. The results are shown in Table 5.
In addition, the tear guide rod 15 provided in each structure is formed so that its waveform is curved inward (nozzle base end side) from the upper end to the lower end of the film-like check nozzle 1 (II) (II ) At the position corresponding to the upper seal portion and the lower seal portion of the film-like check nozzle 1, it is curved outward (nozzle tip portion side) and corresponds to the substantially central portion of the dispensing passage 13 of the check nozzle 1. (III) a position corresponding to the upper seal portion and the lower seal portion of the film-like check nozzle 1, and curved outward and corresponding to the substantially central portion of the dispensing passage 13. (IV) curved outward at a position corresponding to the upper seal portion of the film check nozzle 1, and recessed inward at a position corresponding to the substantially central portion of the dispensing passage 13. Formed, it has been.

  In the guide rod (I), the tear guide rod 15 is formed so as to be largely curved toward the nozzle base end side, and therefore, the tightening of the outer non-wrapping container 9 on the film check nozzle 1 is weakened. Thus, there is an effect that the return of the article to be packaged to the packaging bag main body is improved and the dripping does not occur. On the other hand, the effect of supporting the film-like check nozzle 1 by the outer packaging container 9 was weakened, and the film-like check nozzle 1 was easily bent right and left.

  In the guide rod (II), the occurrence of some dripping was confirmed, but the wave-shaped top portion of the tear guide rod 15 is formed to support the lower seal portion (bottom portion) of the film check nozzle 1. As a result, bending of the film check nozzle 1 to the left and right was reduced.

  In the guide rod (III), the corrugated top portion of the tear guide rod 15 is formed so as to support the upper seal portion and the lower seal portion (bottom portion) of the film-like check nozzle 1, so that the check nozzle 1 moves to the left and right. While the bending of the check nozzle 1 is greatly suppressed, the check nozzle 1 is less flexible in the vertical direction, and the film check nozzle 1 is distorted in the vertical direction, which makes it easier for air to enter.

  In the guide rod (IV), the wave-shaped top portion of the tear guide rod 15 is formed so as to support the upper seal portion of the film-like check nozzle 1, so that the bending of the check nozzle 1 can be effectively suppressed. On the other hand, it was easy to spill.

  As described above, it has been found that the shape of the corrugated tear guide rod 15 is most preferably the shape of the guide rod (II) in terms of the state of the liquid dripping and the film check nozzle 1. By adopting this guide rod (II), the occurrence of dripping can be suppressed, and the self-sealing function of the film check nozzle 1 can be sufficiently exerted without the film check nozzle 1 being bent or deformed. The effect that it can be expected.

  The technology of the present invention is not only provided with a film-like check nozzle, but is also used for refilling provided with a general liquid filling inner package, particularly a general liquid spout integrally formed in the packaging bag body. The present invention can also be applied to a packaging structure containing a flexible packaging bag.

DESCRIPTION OF SYMBOLS 1 Film-like non-return nozzle 2 Packaging bag main body 3, 4 Laminate film 5, 5 'Base film layer 6, 6' Inner sealant layer 7, 7 'Outer sealant layer 8 Liquid substance filling inner packaging body 9 Self-supporting dispensing outer packaging container 10 Water repellent / oil repellent coating layer 11 Gas reservoir space 12 Temporary sealing portion 13 Outlet passage 14 Uneven structure 15 Cutout portion 16 Bottom portion 17 Chuck 18 Wetting layer 19 Embossing seal 21 Perforation 22 Suspension hole (attachment) hole)
23 Clearance

JP 2005-15029 A JP-A-2005-59958 JP 2004-196364 A Japanese Patent Application No. 2008-266346

Claims (13)

A flat film-like check nozzle that projects a check function when a liquid material is interposed between overlapping plastic films on one edge of a packaging bag body made of a soft laminated film, and In the non-self-supporting flexible packaging bag in which at least one of the front and back laminated films of the packaging bag body is provided with a linear or curved concavo-convex structure at least in the vicinity of the side edge on the film check nozzle side. A non-self-supporting liquid material filling inner package formed by sealing a liquid or viscous packaged object in a liquid;
A cylindrical container for storing the non-self-supporting liquid-filled inner package, and at the time of storage, the tip end side of the nozzle is exposed at one edge of the position corresponding to the film check nozzle A self-supporting dispenser comprising a protruding sachet portion that can be opened and provided with a tear guide rod for pulling out a nozzle for exposing it and exposing it, and having a bottom portion that enables self-supporting An outer packaging container;
In a liquid filling and packaging structure comprising:
Nozzle base end portion at a middle position corresponding to the dispensing passage portion of the film-like check nozzle, where the nozzle pull-out tear guide rod provided from the upper end to the lower end of the overhanging pouch portion of the self-supporting dispensing outer packaging container A liquid-filled packaging structure characterized by being recessed on the side . Induced flaw tear the nozzle drawer at a position corresponding to the upper and lower seal portions of the upper seal portion of the film-like non-return nozzle, and wherein the Turkey is corrugated so as to curve the tip of a nozzle. The liquid filling and packaging structure according to claim 1.   The gap between 3 mm and 10 mm is provided between the lower edge of the film-like check nozzle and the inner edge of the seal part of the adjacent self-supporting dispense outer packaging container. Liquid-filled packaging structure.   The tearing guide rod for pulling out the nozzle is opened by being torn from either the upper side from the lower side or from the upper side to the lower side. Liquid-filled packaging structure.   The self-supporting dispensing outer packaging container has a chamfered both corners of the bottom of the boat bottom, a curvature radius R of the chamfered portion of 8 mm or more, and a loosely curved shape with a bottom protruding downward. It presents, The liquid filling packaging structure of any one of Claims 1-4 characterized by the above-mentioned. The film-like check nozzle is composed of two overlapping soft laminated films, the outer peripheral edge portion excluding the portion serving as the nozzle base end, and the central portion serving as a dispensing passage. The base end of this is fused and joined to the side of
When the article to be packaged is poured by tilting the packaging bag main body, the inner surfaces of the laminated films that are in a wet state when the article to be packaged pass through are in contact with each other. The liquid according to any one of claims 1 to 5, wherein a non-return function for preventing intrusion of outside air is generated by a mutual adhesion effect caused by staying of a packaged article on the inner surface. Product-packaging structure. The non-return nozzle of the film is formed by embossing, blasting, knurling, wrinkle processing, vertical / horizontal stripe processing on the base end side excluding the planned tearing position and the vicinity of at least one of the front and back laminated films. The liquid-filled packaging structure according to any one of claims 1 to 6, which has a concavo-convex structure formed as a partial pattern or a full pattern by applying to a shape, an island shape, or a stripe shape . One or more of corona discharge treatment, UV ozone treatment, plasma treatment, and flame treatment are applied to either or both of the inner surface of the non-seal portion of the packaging bag body and the inner surface of the discharge passage of the film-like check nozzle. The liquid filling and packaging structure according to any one of claims 1 to 7, wherein a wetting treatment comprising a treatment is performed. Proximal end portion of the film-shaped non-return nozzle is thus cold fusion to the sealant layer facing any one of claim 1 to 8, the pouring passage surface is characterized by being sealed temporary sealing 2. A liquid-filled packaging structure according to 1. The packaging bag body, higher than the upper edge of the film-like non-return nozzle of the upper lateral seal part of it position, according to any one of claims 1 to 9, characterized in that it has a gas reservoir space Liquid filling packaging structure. The non-self-supporting liquid-filled inner package has its upper end lateral seal portion fused to the upper end of the self-supporting dispense outer packaging container and suspended in the self-supporting dispense outer packaging container. The liquid-filled packaging structure according to any one of claims 1 to 10 , which is stored and held in a state. The self-supporting dispensing outer packaging container is a self-supporting flexible packaging bag having a bottom structure of a ship bottom shape, and the top section having a chuck structure that can be opened and closed to replace a non-self-supporting liquid-filled inner package. The liquid-filled packaging structure according to any one of claims 1 to 10 . The self-supporting dispensing outer packaging container has a bottom having a ship bottom shape, and the top is made of a flexible plastic, paper or metal that can be opened and closed to replace the non-self-supporting liquid-filled inner package. It is comprised with the package body which has a dispenser function, The liquid substance filling packaging structure of any one of Claims 1-10 characterized by the above-mentioned.

Images