JP2006315701A - Liquid jetting nozzle and packaging bag using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid jetting nozzle capable of effectively suppressing a propagation of miscellaneous bacteria caused by an object to be packaged retained between inner surfaces mutually closely stuck through which the object to be packaged passes of the liquid pouring nozzle and staining of the object to be packaged, and a packaging bag using the same. <P>SOLUTION: The base end part of the liquid pouring nozzle is welded and bonded on the inner surface of a packaging bag body at the side part or the top part of the flexible packaging bag body by the sealant layer of the outermost layer. The liquid jetting nozzle is composed a base film layer and respective sealant layers laminated by pinching it, and an antibacterial means is provided on at least the face on the side brought into contact with the object to be packaged of the sealant layer. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a packaging bag for hermetically packaging various liquids, liquids including powdered particles, viscous materials, powdered particles and other contents (packaged items), and a liquid pouring nozzle used by attaching to the bag. In particular, it is possible to reliably prevent the outside air from entering the packaging bag body from the liquid dispensing nozzle after the packaged goods have flowed out, as well as the propagation of germs from the liquid dispensing nozzle. The present invention proposes a liquid pouring nozzle capable of effectively suppressing the contamination of an object to be packaged and a packaging bag using the same.

Conventionally, plastic molded bottles have been widely used as packaging containers that can be dispensed multiple times, such as liquid and jelly-like foods and drinks, dressings and seasonings that may contain particulates, alcoholic beverages, oils, etc. It has been.
In the case of plastic molded bottles with high hardness, it is inevitable to take in outside air in the amount corresponding to the amount to be dispensed, and this causes oxidation and flavor of the packaged items in the bottle. There has been a problem that reduction, contamination of the packaged goods due to dust in the outside air, fungi, and the like proceed relatively early. Therefore, recently, in order to overcome the above-mentioned problems, a soft packaging bag made of a laminated film is used as a packaging container of a packaged object, and is fused and joined to the main body of the packaging bag. It has been proposed to install a pouring nozzle with a check function made of a laminated film and to pour out an article to be packaged through the pouring nozzle (Patent Document 1, Patent Document 2).

According to the techniques disclosed in Patent Document 1 and Patent Document 2, the dispensing of the packaged item is permitted by the collapse deformation of the flexible packaging bag according to the amount of dispensing, and the dispensing is performed. Since there is no air intake (backflow) in the packaging bag, it is possible to effectively eliminate the possibility of oxidation, deterioration of flavor, and contamination of the packaged items in the bag, and with a check function. When the dispensing nozzle tilts the packaging bag and pours the packaged item, when the pouring is stopped by returning to the original standing position, the inner surface of the nozzle wetted by the packaged product is exposed to a reduced pressure atmosphere. Thus, the spouts at the tip of the nozzle are automatically brought into close contact with each other, so that the subsequent entry of the outside air into the bag through the spout nozzle is sufficiently prevented.
JP 2004-175439 A JP 2004-196364 A

  However, the liquid pouring nozzle and the packaging bag provided with this nozzle are the liquid pouring nozzles that are wet when the article to be packaged passes through the nozzle and then passes through the nozzle. Since the surfaces exert a non-return function when they are in close contact with each other, the non-return function requires that the packaged article stays on the inner surface of the liquid dispensing nozzle that is in close contact. . For this reason, the packaged goods are used less frequently, or depending on the usage environment, the accumulated packaged products themselves may ferment and become a temperature at which germs can easily propagate, which may cause the packaged products to become dirty or corroded. There is. This is a fatal problem for this type of liquid dispensing nozzle.

  Therefore, the present invention has an object to solve the above-mentioned problems of the prior art, and the object of the present invention is that the packaged objects of the liquid dispensing nozzle pass through and are in close contact with each other. An object of the present invention is to provide a liquid pouring nozzle capable of effectively suppressing the propagation of germs and the contamination of the packaged goods due to the packaged articles staying between the surfaces, and a packaging bag using the same.

  The liquid pouring nozzle according to the present invention is a liquid pouring nozzle whose base end is fused and joined to the inner surface of the packaging bag main body by the outermost sealant layer at the side or top of the soft packaging bag main body. The liquid pouring nozzle is composed of a base film layer and respective sealant layers laminated with the base film layer interposed therebetween, and an antibacterial means is applied to at least a surface of the sealant layer that comes into contact with an object to be packaged. It is characterized by.

  In the liquid dispensing nozzle according to the present invention, the surface that comes into contact with the packaged object becomes wet when the packaged object discharges and the inner surfaces facing each other are in close contact with each other. The antibacterial means is to use an antibacterial / antifungal film containing an antibacterial / antifungal material in the film forming the sealant layer, and to prevent the antibacterial / antifungal on the surface of the sealant layer. Using a film coated with a mold material, applying a film containing an antibacterial / antifungal material to the surface of the sealant layer, or impregnating the film with an antibacterial / antifungal material, The antibacterial / antifungal material is an inorganic material, an oxide photocatalyst material (titanium oxide) or a natural material, and the inorganic material is phosphoric acid of silver, copper or zinc A natural material is a hinokitiol type, chitosan type, mustard extract type, chitin type, wasabi extract type, eucalyptus extract type Or made of a tea extract-based material, the base film layer made of a resin film such as ethylene vinyl alcohol copolymer, polyolefin, polyamide, polyimide or vinylidene chloride, and the sealant layer made of a polyethylene layer or It is considered that a polypropylene layer is a more effective solution.

  In addition, the present invention provides a liquid pouring nozzle by packaging the base end portion of the liquid pouring nozzle described above at the inner surface of the packaging bag main body at the fused portion of the soft packaging bag main body. A packaging bag characterized by protruding from the side or top of the bag body is proposed.

  According to the present invention, by providing an antibacterial action on the inner surface of the sealant layer on the side of the liquid pouring nozzle that comes into contact with the object to be packaged, germs caused by the object to be packaged remaining on the inner surface of the nozzle can be obtained. Generation and reproduction can be effectively suppressed. Therefore, the packaging bag having the liquid dispensing nozzle according to the present invention can effectively prevent the outside air from entering the packaging bag by the non-return function of the liquid dispensing nozzle, and is caused by the packaged material staying on the inner surface of the nozzle. It is possible to effectively prevent the bacteria from being generated and propagated and effectively protect the packaged items from oxidation, fouling, and flavor reduction.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing an embodiment of a liquid dispensing nozzle according to the present invention.
In the figure, reference numeral 1 denotes a liquid pouring nozzle. The pouring nozzle 1 is, for example, a fused portion of a soft packaging bag body 2 indicated by an imaginary line in the drawing, and is applied to the sealant layer on the inner surface thereof. The base end portion is fused and joined by an outer sealant layer, preferably a sealant layer made of the same resin material as the sealant layer of the packaging bag body.

  FIG. 2A shows an enlarged cross-sectional view of the liquid dispensing nozzle taken along the line III-III in the nozzle width direction of FIG. A laminated film 3 suitable for use in forming the liquid pouring nozzle is formed by laminating sealant layers 5 and 6 on both sides of the stretched base film layer 4 by, for example, extrusion lamination or dry lamination.

  Antibacterial means is imparted to the sealant layer 5 located on the side in contact with the package by the following method. That is, kneading polyethylene or polypropylene and antibacterial / antifungal material, forming this into a film and forming the film of the sealant layer with antibacterial / antifungal film, after forming polyethylene or polypropylene into a film, These are a method of coating the surface of the film with an antibacterial / antifungal material, a method of attaching an antibacterial / antifungal film to the surface of the sealant layer, or a method of impregnating the film with the antibacterial / antifungal material. In addition, you may provide an antibacterial means to the sealant layer 6 by either of the said methods as needed. In this way, by providing antibacterial and antifungal materials to the sealant layer at least in contact with the package, especially the inner surface side through which the package passes, the package always stays on the nozzle inner surface. It is possible to effectively prevent germs from being generated and propagated.

  In the present invention, the microorganisms to be antibacterial and antifungal are bacteria and fungi (fungi), and the bacteria include pathogenic Escherichia coli O-157, Salmonella, in-hospital which are enteric bacteria of facultative anaerobic bacilli. Infectious bacteria such as VRE (vancomycin-resistant enterococci / enterococcus), nosocomial infection-resistant MRSA (methicillin-resistant Staphylococcus aureus / staphylococcus), aerobic bacilli legionella, and fungi , Kumonosukabi and Kakebi.

  As the antibacterial / antifungal material, it is preferable to use any one of inorganic materials, oxide photocatalyst materials (titanium oxide), and natural materials. In addition, the said inorganic material consists of silver, copper, or zinc, and those compounds, and a phosphate-type support body, a silicate-type support body, a soluble glass-type support body etc. are mentioned. Zirconium phosphate, calcium phosphate, calcium phosphate or hydroxyapatite is preferably used as the matrix of the phosphate carrier, and zeolite, silica gel, calcium silicate, clay mineral, or the like is preferably used as the silicate carrier. Other inorganic materials include those in which a trace amount of aluminum atoms are dissolved in the crystal structure of zinc oxide, and those in which a trace amount of zinc atoms or copper atoms are dissolved in the crystal structure of magnesium oxide. There is.

  Advantages of inorganic antibacterial and antifungal materials include excellent heat resistance, high safety, semi-permanent antibacterial effect, wide antibacterial spectrum, and resistance to microorganisms. It is flame retardant and does not generate harmful gases.

  The antibacterial mechanism of antibacterial and antifungal materials is, for example, in the case of silver antibacterial and antifungal materials, which are representative of inorganic antibacterial materials, where silver ions are adsorbed on the surface of microorganisms and are taken into the cells by active transport. By reacting with various enzymes (-SH groups) in the metabolic system in the microorganism and inhibiting the action of the enzyme, the growth of the microorganism can be suppressed.

In addition, oxide photocatalytic materials are typified by anatase-type titanium oxide. Using this titanium oxide as a catalyst, the energy of light is converted into chemical energy to generate active oxygen having strong oxidizing power such as OH radicals. The organic substances that come into contact with it are easily broken down into water and CO ₂ and killed.

  Examples of natural materials include hinokitiol, chitosan, mustard extract, chitin, wasabi extract, eucalyptus extract, or tea extract. These are all extracted from natural materials, have high safety, and are suitable as antibacterial and antifungal materials for preventing abnormal growth of microorganisms.

  In addition to the above materials, antibacterial and antifungal materials may be synthetic organic materials such as nitrogen heterocyclic antibacterial agents benzimidazole (TBZ) and ester antibacterial agents palmitic acid and myristic acid esters. it can. Antibacterial and antifungal materials made of synthetic organic materials are generally not toxic and are not suitable for use as food additives or food packaging materials because of their low safety. Among them, it can be suitably used because of its low toxicity and high safety.

As shown in FIG. 2B, the laminated film 3 can be formed by vapor-depositing the SiO ₂ layer 7 on one surface of the stretched base film layer 4, and the SiO ₂ layer 7 Instead, a gas barrier layer made of a vinylidene chloride coating layer, an aluminum oxide coating layer, an Al vapor deposition layer, or a sputtering layer of these materials (SiO ₂ , Al, Al ₂ O ₃ ) may be formed. According to the formation of these vapor-deposited films or coating films, it is possible to impart excellent water vapor impermeability, gas barrier properties, etc. to the pouring nozzle, and to more effectively exhibit the hermetic sealing function over a long period of time. . The thickness of such the SiO ₂ vapor deposition film and the vinylidene chloride coating is preferably about 0.5Myuemu～20myuemu.

As described above, the liquid pouring nozzle deposits, for example, the SiO ₂ film 7 or the like on the surface of any one of the stretched base film layer 4, for example, the polyethylene terephthalate layer, and further each of the SiO ₂ film 7 and the base film layer 4. As the sealant layers 5 and 6 on the surface, for example, a laminated film disposed on each side of the front and back, which has a four-layer structure in which a polyethylene layer containing silver-containing zeolite as an antibacterial / antifungal material is laminated, Each side part excluding the base side of two laminated films with the same outline shape, or one laminated film folded back to the front and back at the center, with the inner surface side sealant layer facing each other Thus, it can be formed by fusing each other preferably by heat sealing.

  FIG. 3 is a cross-sectional view of an essential part of a laminated film suitable for use in forming a packaging bag body of a packaging bag having a dispensing nozzle according to the present invention. The metal foil layer 10 is directly laminated in the figure by, for example, extrusion lamination or dry lamination, and the sealant layer 11 is also applied to the surface of the metal foil layer 10, which is also, for example, extrusion lamination or dry lamination. Laminated by lamination. In addition, you may provide an antibacterial means also to the sealant layer 11 by the method similar to the said liquid extraction nozzle as needed.

  In addition, as the metal foil layer 10, Al foil or Al alloy foil can be used. Metal / alloy foils such as Al have excellent gas barrier properties, prevent the entry of outside air into the packaging bag, and have the same elasticity as that disclosed in Japanese Patent Application No. 2004-224041 related to the present applicant. Can be improved). The thickness of the metal foil layer is preferably about 3 μm to 20 μm.

  Here, as the laminated film 8 for the packaging bag body, a film in which a vinylidene chloride coating layer is interposed as an intermediate layer in at least one of the metal foil layer 10 and the base film layer 9 and the sealant layer 11 is used. In any of these laminated films 8, the sealant layer 11 is opposed to each other in a mutually facing posture, and both of them are fusion-bonded to a required form, so that a packaging bag body as described later, for example, a package The packaging bag main body before filling of an object can be formed.

By the way, the liquid pouring nozzle may be used, for example, on the side of the packaging bag body 2 at the same time as filling the packaging body into the soft packaging bag body or prior to filling the packaging body as shown in FIG. The sealant layer on the outer surface of the base end of the liquid pouring nozzle 1, for example, the sealant layer 6, is preferably fused by heat sealing to the inner surface of the packaging bag body 2 at the upper part of the sealant layer. By joining, it becomes a part of the packaging bag 12 and protrudes sideways from the upper end portion of the packaging bag body 2 in the figure. Here, the packaging bag main body 2 itself and the fused portion between the packaging bag main body 2 and the liquid dispensing nozzle 1 are shown by hatching in the drawing.
In order to prevent mutual fusion of the sealant layer 5 on the inner surface of the nozzle in such fusion bonding of the outer surface of the base end portion of the liquid dispensing nozzle 1 to the packaging bag body 2, It is effective to make the melting points of the sealant layers 5 and 6 different.

  Moreover, it is preferable to use the same kind of resin material for the sealant layer 6 to be positioned on the outer surface of the liquid pouring nozzle 1 and the sealant layer 5 to be positioned on the inner surface of the packaging bag body 2. According to this, the fusion-bonding strength between the liquid pouring nozzle 1 and the packaging bag body 2 can be sufficiently increased. Among them, the polyethylene layer and the polypropylene layer can exhibit excellent sealing strength at a relatively low heat sealing temperature, so that the base end of the liquid pouring nozzle can be easily, quickly and reliably packaged. It can be fusion bonded to the body.

  The base film layers 4 and 9 of the liquid pouring nozzle 1 and the packaging bag body 2 can be made of the same kind, and can be selected from various materials having required physical properties. In particular, the base film layer is preferably composed of a uniaxial or biaxially stretched synthetic resin film such as an ethylene vinyl alcohol copolymer, polyolefin, polyamide, polyimide, or vinylidene chloride. These are preferable for exhibiting excellent water vapor permeability and high gas barrier properties.

In particular, the biaxially stretched polyethylene terephthalate film layer uses “Emblet PC” (trademark Unitika Ltd.), which is a straight-cut polyester film. It is preferable to use “Emblem NC” (trademark Unitika Co., Ltd.), which is a conductive nylon film, for the following reason.
That is, according to these, in addition to imparting higher water vapor impermeability, gas barrier properties, and the like compared to the case of using a uniaxially stretched base film layer, the tip of the liquid pouring nozzle is straightened by fingers. Therefore, it is possible to smoothly and easily remove the tear, and to make the tearing wrinkle sufficiently smooth without fluffing or the like, so that the sealing nozzle can sufficiently exhibit the hermetic sealing function.

  As shown in FIG. 5 (a), a laminated film 8 for a packaging bag body, which can have a laminated structure of three or more layers, is formed by bending a rectangular laminated film 8 into two at the center in the longitudinal direction. Preferably, it is formed into a bag shape by heat-sealing, and after filling with an article to be packaged, the upper part is preferably heat-sealed to form a three-side sealed bag. As shown in FIG. The laminated film may be overlapped, and both sides and the lower part thereof are preferably heat-sealed to form a bag, filled with an article to be packaged, and then the upper part is preferably heat-sealed to form a four-side sealed bag. Here, the seal portion 13 of the packaging bag body 2 is shown by hatching in the drawing.

  Moreover, the packaging bag main body 2 may be an inflation tube produced using a tube-type laminated film. This is because two or more types of barrier resins (ethylene vinyl alcohol resin (EVOH), vinylidene chloride, etc.) are extruded in a tube shape by each extruder, and the laminar flow of each resin is laminated in a state where each layer is not mixed, Immediately cooled and solidified into a tube shape. When this tube-type laminated film is used, it is sufficient to seal only the lower part in the case of a packaging bag, and the upper part is preferably heat-sealed after filling the package, and a two-side sealed packaging bag can be easily produced. There is an advantage.

  Further, for example, the filling and packaging of the liquid article to be packaged by such a packaging bag is performed at the same time as or after the joining process of the liquid pouring nozzle 1 made of the laminated film 3 to the packaging bag body 2. be able to. The filling and packaging may be performed in a state where the outside air is sufficiently excluded from the inside of the packaging bag by, for example, filling in the liquid or by extracting the inside of the bag after filling the packaged item. It is preferable in preventing oxidation of the packaged item.

  Soft packaging bags themselves are usually not self-supporting or formable, so when transporting, storing, displaying, or using packages, they should be placed in a box made of paper or plastic. In addition, it is preferable that the packaging bag is stored under fixation or fixation at a plurality of places to give the packaging bag self-supporting property and formability.

Inoculate 0.4 ml of Escherichia coli solution on each film (50mm x 50mm) for polyethylene film kneaded with antibacterial material made of silver zeolite (conformity example of the present invention) and polyethylene film not containing the antibacterial material (comparative example). After standing at 35 ° C. for 24 hours, the remaining bacteria were washed out, and the antibacterial effect was examined by measuring the number of viable bacteria by the standard agar medium method. The results are shown in Table 1. From the results in Table 1, the effects of the present invention were confirmed.

  The liquid pouring nozzle and the packaging bag using the liquid pouring nozzle according to the present invention include various liquids that dislike oxidation, fouling, flavor reduction, etc., liquids containing powders, viscous materials, powders, and other contents (covered). Packaging: Food and drink such as liquid and jelly, dressings and seasonings that may contain granular materials, alcoholic beverages, oils, etc.) can be used for packaging bags that can be airtightly packaged.

It is a top view which shows embodiment of the liquid extraction nozzle which concerns on this invention. (A) Cross-sectional view of essential parts of a laminated film suitable for use in forming a liquid pouring nozzle for a packaging bag according to the present invention, and (b) SiO ₂ is deposited on the base film layer of the laminated film forming the liquid pouring nozzle. It is principal part sectional drawing of the laminated | multilayer film at the time of making it do. It is principal part sectional drawing of a laminated film suitable for use in formation of the packaging bag main body of the packaging bag which concerns on this invention. It is sectional drawing which shows embodiment of the packaging bag which concerns on this invention. It is a figure which shows the 3-way sealing method (a) and the 4-way sealing method (b) of the packaging bag based on this invention.

Explanation of symbols

1 Liquid pouring nozzle 2 Packaging bag body 3, 8 Laminated film 4, 9 Base film layer 5, 6, 11 Sealant layer 7 SiO ₂ layer
10 Metal foil layer
12 Packaging bags
13 Seal part

Claims (9)

A liquid dispensing nozzle whose base end is fused and joined to the inner surface of the packaging bag body at the side or top of the soft packaging bag body by an outermost sealant layer, the liquid dispensing nozzle comprising: A liquid pouring nozzle comprising: a base film layer and respective sealant layers laminated with the base film layer interposed therebetween, and antibacterial means is applied to at least a surface of the sealant layer that comes into contact with an object to be packaged. The surface on the side that comes into contact with the object to be packaged is a part that becomes wet when the object to be packaged is discharged and passes, and the inner surfaces facing each other are in close contact with each other and exhibit a check function. The liquid extraction nozzle according to claim 1. The antibacterial means uses an antibacterial / antifungal film containing an antibacterial / antifungal material in the film forming the sealant layer, and uses a film coated with an antibacterial / antifungal material coated on the surface of the sealant layer. The liquid injection according to claim 1 or 2, wherein a film containing an antibacterial / antifungal material is attached to the surface of the sealant layer, or the film is impregnated with the antibacterial / antifungal material. Out nozzle. 4. The liquid dispensing nozzle according to claim 3, wherein the antibacterial / antifungal material comprises any one of an inorganic material, an oxide photocatalytic material (titanium oxide), and a natural material. 5. The liquid dispensing nozzle according to claim 4, wherein the inorganic material includes a phosphate-based support, a silicate-based support, or a soluble glass-based support of silver, copper, or zinc. 5. The liquid injection according to claim 4, wherein the natural material comprises a hinokitiol, chitosan, mustard extract, chitin, wasabi extract, eucalyptus extract or tea extract material. Out nozzle. The liquid pouring nozzle according to any one of claims 1 to 6, wherein the base film layer is made of a resin film such as ethylene vinyl alcohol copolymer, polyolefin, polyamide, polyimide, or vinylidene chloride. . The liquid pouring nozzle according to any one of claims 1 to 7, wherein the sealant layer is constituted by a polyethylene layer or a polypropylene layer. A liquid pouring nozzle in which the base end portion of the liquid pouring nozzle according to any one of claims 1 to 8 is fused and joined to the inner surface of the packaging bag main body at a fusion portion of the soft packaging bag main body. Is a packaging bag that protrudes from the side or top of the packaging bag body.

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