JP2012046252A - Liquid pouring nozzle with checking function, and packing bag using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid pouring nozzle with a checking function which prevents dripping generated after pouring a packed object from being transmitted to a packing bag and which prevents the packed object that is poured from being contaminated by dripping, and to provide the packing bag using the liquid pouring nozzle.SOLUTION: The liquid pouring nozzle with the checking function is formed by the fusion of a peripheral part excluding a part as a base edge side of the nozzle, two laminated films in two sides or one laminated film folded into two at a center part, including a one-axial or bi-axial stretching base film layer and a sealant layer laminated by pinching the base film layer. The liquid pouring nozzle with the checking function is formed by providing a projection part for preventing dripping in a steeple-head shape from transmission-dropping, on a base edge part side from a nozzle opening position, in an edge part of a lower fusion part at the liquid pouring time in a peripheral fusing part.

Description

  The present invention relates to a liquid pouring nozzle that is fusion-bonded to the side portion or the top portion of a packaging bag body that is soft and excellent in flexibility, and a packaging bag to which this is attached. In particular, the non-returnability that prevents the outside air from entering the packaging bag body and the liquid dripping after the package is poured out can be sufficiently prevented when the liquid package is dispensed many times. The present invention proposes a liquid dispensing nozzle having a non-return function and a packaging bag provided with this nozzle.

  Currently, liquid and jelly-like foods and beverages exceeding 100ml, seasonings and other packaging bags have caps made of plastic injection molded products on the inner surface of relatively hard packaging bags containing aluminum foil. The one in which the pouring nozzle is heat-sealed is generally used. According to such a packaging bag, the article to be packaged can be poured out many times based on the removal of the cap from the dispensing nozzle and the screwing operation.

  In such a packaging bag, the cost of the pouring nozzle and the cap, which are hard plastic molded products, is high, and sufficient joining of the pouring nozzle having a three-dimensional shape to the packaging bag body is sufficient. Complete heat fusion under strength is still difficult using special heat sealing means or the like. In addition, there is an inconvenience in handling that the cap needs to be removed and re-screwed each time the packaged item is poured out. Moreover, for packaging bags that are relatively hard and difficult to be crushed and deformed, it is essential to replace the packaged items with the outside air in the packaging bag as the packaged items are poured out. After the end, it is inevitable that the outside air enters the packaging bag until the cap is screwed into the dispensing nozzle, and dust, fungi, etc. in the outside air contaminate the package, and the outside air itself However, there is a problem that the packaged material is oxidized to impair the seasoning, the flavor of the alcoholic beverage, and the like.

In order to solve the above problem, in Patent Document 1, the discharge port is automatically sealed by the wetness of the packaged article at the same time as the dispensing of the packaged article is stopped, and the outside air is surely entered into the packaging bag. A liquid dispensing nozzle having a self-sealing check function and a packaging bag using the same are proposed.
JP 2005-59958 A

In FIG. 8 of Patent Document 1, as an example of the liquid pouring nozzle, a protrusion is provided at the fusion part at the lower part of the nozzle opening position, and the dripping generated by this protrusion is retained, and the liquid dripping occurs. It works to prevent it from falling into the packaging bag. However, since the protruding portion is provided immediately below the nozzle opening position, the liquid dripping and staying there comes into contact with the packaged object during pouring and soils the packaged object. There was also a problem.

  Therefore, the present invention has an object to solve such problems of the prior art, and the object of the present invention is to pour out the items to be packaged in the bag into the outside of the packaging bag. It is applied to the soft packaging bag body that responds to the pouring by contraction or crushing deformation, and at the same time as the pouring of the package is stopped, the discharge port is opened by wetting by the package A liquid dispensing nozzle with a self-sealing check function that seals automatically and reliably prevents outside air from entering the packaging bag, and prevents transmission of the generated liquid to the packaging bag. Another object of the present invention is to provide a liquid dispensing nozzle having a check function capable of preventing the packaged material poured out by dripping from being soiled and a packaging bag using the same.

  The present invention is a two-layer laminated film comprising a uniaxial or biaxially stretched base film layer and a sealant layer laminated with the uniaxially or biaxially stretched base film layer, or a laminated film formed by folding in two at the center. A liquid dispensing nozzle having a non-return function formed by fusing a peripheral portion excluding a portion serving as a base end side of the nozzle, wherein the lower fusing portion at the time of liquid pouring out of the peripheral fusing portions Proposing a liquid dispensing nozzle having a non-return function, characterized in that a tip-like liquid dripping propagating projection is provided on the base end side of the edge of the nozzle relative to the opening position of the nozzle. .

  In the present invention, the base end of the liquid pouring nozzle is fused and joined to the inner surface of the packaging bag body at the side of the soft packaging bag body via the outermost sealant layer. And a packaging bag having a non-return function, characterized in that the liquid pouring nozzle is integrally formed by projecting from the side portion of the soft packaging bag body.

  According to this invention, by preventing the entry of the outside air into the packaging bag by squashing deformation etc. of the packaging bag main body accompanying the dispensing of the liquid and exhibiting the excellent check function of the dispensing nozzle, In addition to effectively protecting the packaged items in the bag from oxidation, fouling, flavor deterioration, etc., even if dripping occurs after the liquid is poured out, the dripping is effectively drained and poured out. It is possible to prevent the packaged item from being soiled by dripping.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a liquid dispensing nozzle 1 and a packaging bag 10 according to the present invention. The dispensing nozzle 1 is, for example, a side fusion portion of the soft packaging bag body 2, and a base end portion is fusion-bonded to the sealant layer on the inner surface of the flexible packaging bag body 2 by the outermost sealant layer.

  Here, the liquid pouring nozzle 1 is composed of three layers of a thermoplastic base film layer and respective sealant layers laminated on both sides of the base film layer. A film, that is, a laminated film of two front and back surfaces having the same contour shape, or a single laminated film folded back on the front and back at the center portion, with each inner surface side sealant layer facing each other, except for the base end side It can be constructed by fusing each other as shown by hatching in the figure, preferably by heat sealing. Note that heat sealing can be suitably used because it can form a fused portion as expected at a relatively low temperature, simply and quickly.

In the present invention, in addition to forming the packaging bag by the above method, the dispensing nozzle 1 made of at least a two-layer laminated film is formed from the side of the flexible packaging bag body 2 to form the packaging bag body 2. At the same time or after the formation thereof, the packaging bag body 2 may be integrally formed. In this case, usually, the laminated film for the packaging bag body 2 and the laminated film for the liquid pouring nozzle 1 are shared, and the liquid pouring nozzle 1 is composed of a uniaxially or biaxially stretched base film layer and one of them. Two or folded laminated films, each having a sealant layer laminated on the front side of the sheet, are preferably disposed in the peripheral portion of the protruding portion from the packaging bag body with the sealant layer facing each other. Are fused together by heat sealing.
In the case of the packaging bag 10 having an integral structure, a process for fusion bonding between the packaging bag body 2 and the liquid pouring nozzle 1 is not necessary, and manufacturing of the independent pouring nozzle 1 is not necessary. Only the occurrence of defects or the like can be completely removed, and the required packaging bag 10 can be manufactured more simply, quickly and inexpensively.

When the article to be packaged is poured out from the inside of the packaging bag 10, the fused portion at the tip of the packaging bag 10 is removed by tearing and cutting with fingers, thereby forming the spout 9 at the tip of the nozzle, and then the packaging bag 10. Can be performed by tilting so that the spout 9 is in a posture facing downward. In this case, the pouring nozzle 1 made of a soft laminated film is separated from the front and back sides under the action of the water head pressure of the packaged object, opens the spout 9 and dispenses the packaged object as required. Allow.
When the article to be packaged is dispensed in this way, the flexible packaging bag body 2 shrinks or shrinks by an amount corresponding to the dispensed volume without sucking outside air as the article to be packaged is dispensed. It will be crushed and deformed.

  In order to tear and remove the fused portion of the tip of the dispensing nozzle 1 with fingers, at least each of the fused portions 5 and 6 facing in the width direction of the laminated film having a layer structure of three or more layers or two or more layers. On the other hand, it is preferable to provide the V-shaped bent portion 3 at a position corresponding to the nozzle spout 9. According to this, the fusion portion itself bends in a V-shape, so that the V-notch is formed in the fusion portion. It is possible to sufficiently induce the tearing without separately forming a tearing guide rod such as a notch, and to make it very easy to visually recognize the tearing induction portion.

After the required amount of the package is poured out by tilting the packaging bag 10, the packaging bag 10 is returned to the original standing posture to stop the pouring, and the package is wetted based on the stoppage of the pouring. In addition, the inner surface of the nozzle 1 is brought into close contact with each other under the thin film of the package, and at the same time as the stop, the nozzle 1 is brought over the width direction of the film on the front and back of the pouring nozzle 1, in other words, in the vertical direction. The spout 9 at the tip can be sealed to prevent the outside air from entering the packaging bag.
Therefore, in the packaging bag 10 provided with the dispensing nozzle 1, the packaged item in the bag is sufficiently protected from contact with the outside air during and after the dispensing as well as before the dispensing of the packaged item. As a result, oxidation, fouling, etc. of the packaged items in the bag are effectively prevented.

  Note that the liquid flow path 7 defined by the upper and lower fusion parts 5, 6 provided facing the width direction of the dispensing nozzle 1 has one end substantially parallel to the base end 8 from the spout 9. After inclining downward, it is preferable that it gradually expands in the width direction of the dispensing nozzle 1.

  Specifically, as shown in an enlarged view of an example of the dispensing nozzle 1 in FIG. 2, the liquid flow path 7 is inclined downward in a direction substantially parallel to the base end portion 8 from the spout 9, and then the liquid flow path 7 The upper part of 7 is smoothly inclined downward, and the lower part of the liquid flow path 7 is bent downward and extends so as to expand.

  In this way, the liquid flow path 7 is inclined downward from the spout 9 toward the base end portion 8, so that when the packaging bag 10 is returned to the standing posture after the packaged article is poured out, the packaging is performed. The product can be smoothly drawn into the bag, and the occurrence of dripping of the packaged product can be suppressed.

  In addition, the liquid flow path 7 is inclined downward from the spout 9 toward the base end 8 and then extends so as to gradually expand, so that the article to be packaged is poured out from the spout 9. In this case, it is possible to more easily control the dispensing flow rate and the dispensing direction.

  In addition, since the liquid flow path 7 of the dispensing nozzle 1 does not have convex portions that cause liquid pools at the upper and lower portions thereof, the liquid flow path 7 of the dispensing nozzle 1 is checked back by the surplus packaging material that remains after the packaging material is poured out. The effect is not hindered and no dripping occurs from the spout 9.

  In the present invention, as shown in FIG. 2, the liquid is disposed at the lower end of the fusion part 6 positioned on the lower side and closer to the base end part 8 than the spout 9 when the packaged article is poured out. It is characterized by the provision of a protrusion 11 for preventing falling. The protrusion 11 functions to prevent dripping from the pouring outlet 9 and to prevent the dripping from staying on the packaging bag. Moreover, in the present invention, the protrusion 11 is provided on the base end 8 side of the spout 9, so that even if the liquid dwells in the protrusion 11 and is fixed, Thereafter, the packaged material to be poured out does not come into contact, and the packaged product can be prevented from being soiled.

  In the case where silicone oil, waxy substance or other water-repellent substance is applied to the outer surface of the protrusion 11 or when ultra-fine irregularities such as lotus leaves or taro leaves are given, It is possible to increase the liquid drainage of the staying packaged object and effectively prevent the packaged object from being transmitted to the outer surface of the packaging bag 10.

  The extending length of the edge of the spout 9 extending in the width direction of the laminated film is preferably 5 to 40 mm. Here, the term “substantially in the width direction” means that the direction of tearing at the tip of the pouring nozzle 1 and the extending direction of the edge of the pouring port 9 are in the range of 0 to 15 ° with respect to the width direction of the laminated film. This is in consideration of the fact that it may be inclined at an angle. This is because if the length of the edge of the spout 9 is less than 5 mm, the amount of pouring is too small in relation to the volume of the packaging bag body 2, while if it exceeds 40 mm, the accuracy of the pouring direction is not correct. This is because identification becomes difficult.

  In addition, the liquid pouring nozzle of the present invention and the packaging bag using the same are used as the base film layer in addition to uniaxial or biaxially stretched polyethylene terephthalate, ethylene vinyl alcohol copolymer, nylon, polypropylene, etc. It is preferable to use one provided with a required vapor deposition layer. In particular, when it is a biaxially stretched polyethylene terephthalate film layer, it is a straight cut polyester film “Embret PC”. (Trademark Unitika Co., Ltd.) is used, and when a biaxially stretched nylon film layer is used, it is preferable to use “Emblem NC” (Trademark Unitika Ltd.) which is a linear cut nylon film. This can impart higher water vapor impermeability, gas barrier properties, and the like to the dispensing nozzle 1 than when a uniaxially stretched base film layer is used. This is because the linear tearing removal can be performed smoothly and easily, and the tearing wrinkle can be made sufficiently smooth without fuzz and the like so that the discharge nozzle 1 can more fully exhibit the hermetic sealing function. .

The sealant layer located on the outer surface of the pouring nozzle 1 and the sealant layer as the inner surface layer of the soft packaging bag body 2 are preferably of the same type, for example, various unstretched PE An olefin resin layer such as a layer, a PP layer, a metallocene catalyst polyethylene layer, an ethylene vinyl acetate copolymer layer, an ethylene ethyl acrylate copolymer layer, an ionomer layer, and the like. This is because when the pouring nozzle 1 and the packaging bag main body 2 are fused by, for example, heat sealing, the base end portion 8 of the pouring nozzle 1 is also simply, quickly, and always reliably. This is because the packaging bag 10 having the dispensing nozzle 1 protruding outward from the side portion of the packaging bag body 2 can be manufactured.
In this case, as a matter of course, the sealant layer to be located on the inner surface of the dispensing nozzle 1 can also be formed of the same material as described above.

Then, each of the sealant layers of the pouring nozzle 1 or the packaging bag body 2 made of a laminated film of three or more layers or two or more layers can be laminated to the base film layer by extrusion lamination or dry lamination.
In addition, when required physical properties cannot be ensured in the packaging bag 10 only by the base film layer, an SiO ₂ vapor deposition layer, a vinylidene chloride coating layer, an aluminum oxide coating layer, an Al vapor deposition layer are provided between the sealant layer and the base film layer. It is also possible to interpose an intermediate layer made of an Al foil, an ethylene vinyl alcohol resin layer, or a sputtering layer such as SiO ₂ , Al, or Al ₂ O ₃ .

  In addition, the outer surface of the base end portion of the pouring nozzle 1 made of a laminated film having at least a three-layer structure having sealant layers on both the inner and outer surfaces is fused and joined to the inner surface of the packaging bag body 2. In order to reliably prevent mutual fusion of the inner surfaces of the pouring nozzle 1, a release sheet having a higher melting point or not thermally melted is inserted and arranged inside the base end portion 8 of the pouring nozzle 1. The fusing temperature of each sealant layer on the inner and outer surfaces of the dispensing nozzle 1 is made different by changing the material, changing the extrusion lamination condition of each sealant layer of the same material, etc. It is effective to make the melting point of the sealant layer higher than that of the sealant layer on the outer surface of the dispensing nozzle 1. For example, low density polyethylene (LDPE) is laminated as a sealant layer on the outer surface of the nozzle on the surface of a base film layer made of a uniaxially stretched polyethylene terephthalate film, and the other surface is made of the LDPE as a sealant layer on the inner surface of the nozzle. In addition, LLDPE is used as the sealant layer on the outer surface of the nozzle, and the other sealant layer on the inner surface of the nozzle is laminated as the sealant layer on the outer surface. By using LLDPE having a higher density than the LLDPE to be used, mutual fusion of the inner surface of the dispensing nozzle 1 can be reliably prevented.

The base film layer preferably has a thickness of 8 μm to 30 μm. When the thickness is less than 8 μm, water vapor impermeability, gas barrier properties and the like may be insufficient. This is because the bending strength of the film becomes too large, and the adhesion of the inner surface of the nozzle after stopping the pouring of the packaged object may be impaired.
The sealant layer preferably has a thickness of 10 to 60 μm. If the thickness is less than 10 μm, there is a possibility that sufficient seal strength cannot be secured. This is because it may become too large.

  Although the packaging bag 10 of the present invention is in a bloated form by filling and packaging a liquid article to be packed therein, preferably under deflation, the soft packaging bag 10 itself is usually self-supporting. Since there is no property or formality, when transporting, storing, displaying, using, etc., the packaged item, it is fixed in multiple places in a box made of paper, plastic, etc. It is preferable to give the packaging bag 10 self-supporting property and formability.

  The liquid pouring nozzle and the packaging bag using the same according to the present invention include soy sauce, sauce, various soups, beverages, etc., as well as oil, liquor, wine, dressings that may contain powdered granular materials, detergents, liquid pharmaceuticals Etc., and can be used as a soft packaging bag used for packaging.

It is a top view which shows embodiment of the liquid extraction nozzle which concerns on this invention. It is a figure which shows the specific example of the extraction nozzle.

DESCRIPTION OF SYMBOLS 1 Liquid pouring nozzle 2 Packaging bag main body 3 V-shaped bending part 5, 6 Fusion part 7 Liquid flow path 8 Base end part 9 Outlet 10 Packaging bag 11 Protrusion part

Claims (3)

Nozzle base of front and back laminated films comprising a uniaxial or biaxially stretched base film layer and a sealant layer laminated therebetween, or a laminated film formed by folding in two at the center A liquid dispensing nozzle having a non-return function formed by fusing a peripheral portion excluding a portion serving as an end,
Protruding portions for preventing dripping and dropping are provided on the edge of the lower fusion portion at the time of liquid pouring out of the peripheral fusion portion on the base end side of the opening position of the nozzle. A liquid dispensing nozzle having a check function.   The base end portion of the liquid dispensing nozzle according to claim 1 is fusion-bonded to the inner surface of the packaging bag body through the outermost sealant layer at the side portion of the soft packaging bag body. A packaging bag having a check function.   A packaging bag having a check function, wherein the liquid dispensing nozzle according to claim 1 is integrally formed by projecting from a side portion of a soft packaging bag body.

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