JP5344761B2 - Double-pack packaging bag for drinking water and packaging structure for filling with drinking water and extraction material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double pack packaging bag for drinking water, which can maintain a fresh state at the first stage of filling for a long time without degrading the flavor of an extraction liquid such as a tea or a coffee or the like which is co-filled together with a filter bag for enclosing an extraction element. <P>SOLUTION: The double pack packaging bag comprises a flexible packaging bag in which a flat filmlike check nozzle 1, which produces check function to prevent open air from invading into the bag by close adhesion between films when a liquid material is present in a spouting passage formed between piled flexible laminated plastic films, is provided projectingly on an edge of a packaging bag body 2 composed of the flexible laminated film and the filter bag enclosing the extraction element such as the tea, the coffee or a fruit which is stored in the flexible packaging bag under airtightness together with a liquid filled and sealed in the liquid. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention is a beverage in which a filter bag in which an extraction material is sealed together with a liquid such as water is contained in a flexible packaging bag formed by protruding a film-like check nozzle (liquid pouring nozzle) having a self-seal check function. and water for the double pack packaging bag, the double pack packaging bag drinking water in the body of the (extraction beverages) formed by the liquid in a sealed filled with extraction material through a filter bag with a non-self-supporting water-extracted material both The present invention relates to a drinking water / extractable material co-filling packaging structure in which a filling packaging body is housed and held in a self-supporting outer packaging container.

Conventionally, taste drinks such as tea and coffee are sometimes drunk directly in a teapot or coffee pot, and filter bags such as tea bags are sometimes used. When brewing tea in a teapot, while the hot water to tea leaves is going to penetrate, taste and aroma, tea components such as flavor will be issued extracted in good condition. In the case of immersion into or hot water pouring water by sealing the tea leaves into the tea bag, even if not fully extracted out components of smell and taste, both of which are found in disposable one-time Therefore, you can always enjoy the flavor of fresh tea drinks.

  However, when the tea bag is immersed and stored for a long time with water or tea extract in a plastic bottle, for example, tannin and chlorophyll contained in green tea are generally oxidized and astringent. And discoloration cannot be avoided, and even if vitamin C is encapsulated together, the protein will eventually decay. These are mainly due to the fact that tea extracts and extraction materials (tea leaves, powdered tea, coffee granules) are oxidized over time, especially after opening. At least, in order to prevent such a phenomenon, it is necessary to place the tea extract and the extraction material in an environment that is not subject to oxidation.

In this regard, Patent Documents 1 and 2 and the like conventionally disclose a liquid pack in which a filter bag containing a stock material is housed in an outer container in the field of liquid seasonings. The technology according to this disclosure is that the filter bag containing the dashi material is immersed in the liquid in the outer container, but is basically kept in an anaerobic atmosphere until it is opened, except for dissolved oxygen in the liquid. Therefore, there is a feature that flavor does not deteriorate. However, this disclosed technique, the after opening the outer container, the outer instrumentation container immediately from the air from entering, oxidation occurs in the extraction exudates oxide accident and flavor deterioration, degradation progresses rapidly This tends to be further encouraged over time.

  On the other hand, conventionally, there has been a proposal for a flexible packaging bag for liquid filling that can suppress oxidation of the contents in the packaging bag even after opening. For example, Patent Documents 3 and 4 disclose a flexible packaging bag having a liquid dispensing nozzle made of a plastic film with a self-seal check function, that is, a film-like check nozzle. Since the flexible packaging bags disclosed in these documents are non-self-supporting packaging bags formed of a soft laminated film, it is inconvenient to use them alone as they are. Conventionally, a configuration in which the container is housed and fixed in a container as described in Patent Document 5 is employed.

JP-A-2-128666 Japanese Patent Laid-Open No. 3-292971 JP 2005-15029 A JP-A-2005-59958 JP 2004-196364 A

  However, the flexible packaging bags disclosed in Patent Documents 3 and 4 are liquid-filled liquids such as soy sauce and other liquid seasonings and salad oil (also referred to as “liquid filling”: Nippon Machinery Co., Ltd.). By using Japan Society of Science 2005.5.610 Lecture No. 05-47), it is used as a liquid packaging body containing only a liquid or viscous packaging material. And the characteristic of the package of the full form formed by filling the flexible packaging bag with the liquid material (hereinafter referred to as “liquid material-packed package”) is the operation of pouring the liquid package from the bag body. No matter how many times it is repeated, there is no inflow (reverse flow) of the atmosphere, and at least in the bag body, the package is kept in a state where it is never exposed to the atmosphere. Therefore, since the liquid package to be packaged hermetically sealed in such a flexible packaging bag does not cause any chemical change such as oxidation, there is an advantage that it can be kept fresh as it is for a long time. .

  However, for the packaging bag, the film-like non-return nozzle is self-sealed by diffusion of intervening liquid due to capillary action between two front and back soft laminated plastic films (surface film and back film). In this case, the side of the packaging bag body also comes into close contact with each other by the capillary action of the liquid package packed in the liquid seal, corresponding to the volume of the liquid dispensed, It will be in a contracted or crushed state. As a result, the liquid package in the packaging bag body may be obstructed by the strong adhesion between the front and back films as described above. Then, there is a conflicting problem of inhibiting the check function described above.

In particular, in the case of a double pack packaging bag for drinking water containing an extraction material together with a liquid such as drinking water (water and extract), for the reasons described above, as in many drinking water containers, When the object to be packaged (drinking water extract) is poured out by opening the nozzle (opening), the air flows into the alternative (back flow), but in the package disclosed in Patent Documents 3 and 4 above, this phenomenon in that it is possible to prevent, as compared to drinking water for liquid packaging containers far less degradation of the quality of extraction beverage. Even so, if the usage is poor, the nozzle check function described above sometimes becomes weak, and there is a possibility that the intrusion of air cannot be suppressed. Therefore, this type of packaging bag (including the nozzle) is required to further improve the check function.

  Further, the conventional packaging structure shown in Patent Document 5 is a non-self-supporting flexible packaging bag filled and packaged with an article to be packaged, which is stored in a paper box. In this case, the packaging bag is stored in the box. There is a problem that the manufacturing process is complicated and expensive because the box structure is complicated, the burden of the boxing operation is large, and it cannot be automated.

The present invention has the aim of solving the above problems of the prior art are having, in particular, an aqueous solution containing water and extract component (hereinafter, extract called.) And a liquid such as tea such or coffee over beverages and any extraction filter bags encapsulating material Do, in the double pack packaging bag formed by co-filling, without deteriorating the flavor of brewed beverage, capable of holding over a fresh filling initially long It is to propose a double pack packaging bag for water.

In addition, the present invention is suitable for co-filling of drinking water and an extraction material, as well as non-return function characteristics and drinking water pouring characteristics of the filling (so that drinking water in the bag can be smoothly poured to the end. At the same time, it is to propose a double pack packaging bag for drinking water having a film-like check nozzle which is excellent in that it does not flow out excessively.

  Another object of the present invention is to propose a double-pack packaging bag for drinking water that has a self-supporting property that can be used on a tabletop or the like without being stored in an outer packaging container such as a box. is there.

  Another object of the present invention is to provide a double-pack packaging bag for drinking water mainly composed of a non-self-supporting and non-fixed flexible packaging bag, and to use the packaging bag as it is on a desk or the like. It is to propose a drinking water / extraction material co-filled packaging structure that can be retained.

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, according to the present invention, when a liquid material is interposed in an extraction passage formed between overlapping soft laminated plastic films at one edge of a packaging bag body made of a soft laminated film, the film is brought into close contact with each other. A flexible packaging bag having a flat film-like check nozzle projecting a check function that prevents the outside air from entering the bag, and the flexible packing bag together with the liquid to be sealed in the liquid under airtightness is housed, a filter bag formed by sealing tea or coffee, the extraction material, such as fruit, Tona is, the nozzle inlet portion of the film-like non-return nozzle, this base end seal portion, pouring It suggests drinking water for the double pack packaging bag, wherein Rukoto dammed section for closing the top or a part of the bottom of the passage provided.

In the present invention, the above double pack packaging bag for drinking water is
(1) Either one or both of the inner surface of the non-seal portion of the packaging bag main body and the inner surface of the discharge passage of the film-like check nozzle have a wetting treatment layer. The wetting layer is applied to the inner surface in the vicinity including the planned opening position,
(2) Either 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-like check nozzle have a wetting layer, and the film-like check nozzle has The wetting layer is applied to the inner surface only in the vicinity including the planned opening position,
(3) The flexible packaging bag has a slit opening position of the film-like check nozzle from the packaging bag main body to the non-sealed portion of each of the laminated films forming the front and back of the packaging bag body and the film-like check nozzle. Alternatively, a straight or curved concavo-convex structure has been given up to the position in the vicinity thereof,
(4) The wetting treatment includes at least one of corona discharge treatment, UV ozone treatment, resin coating treatment surface, metal deposition treatment, electroless plating treatment, metal low temperature spraying treatment, plasma etching treatment, and flame treatment. about,
(5) The concavo-convex structure imparted to the laminated film is embossed, blasted, knurled, wrinkled, vertical / horizontal striped, planar, island-shaped, striped on one or both of the front and back laminated films. To have been formed as part or all patterns,
(6) 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,
(7) The film-like non-return nozzle has two thin soft laminated plastic films that are overlapped with each other at the peripheral portion except the portion that becomes the nozzle base end, and is not fused at the center portion. An exit passage is defined, and a base end portion thereof is fusion-bonded to a side portion of the packaging bag body, and when the article to be packaged is poured out by tilting the packaging bag body, When the package passes, the inner surfaces of the soft laminated plastic in which the inside of the pouring passage becomes wet is brought into contact with the outside air due to the mutual adhesion of the packaged material on the inner surface of the pouring passage. To demonstrate a check function to prevent the intrusion of
( 8 ) The base end portion of the film-like check nozzle is temporarily sealed on the inner surface of the dispensing passage by low-temperature fusion of the facing sealant layer,
( 9 ) The liquid is an aqueous solution containing water or an extracted component, and the room temperature water or hot water is filled in the flexible packaging bag with a liquid seal,
( 10 ) The filter bag is a paper, cloth having a filter function that prevents elution to the outside even if the leaf-like, granule-like, and powder-like extraction materials to be enclosed are retained inside while having water permeability. It is composed of a woven or non-woven fabric of synthetic resin, a metal foil having fine holes,
( 11 ) The filter bag is fixed to the bottom and sides of the flexible packaging bag,
( 12 ) A bottom portion for self-supporting is provided at the lower end of the packaging bag body of the flexible packaging bag,
( 13 ) The flexible packaging bag is a three-side seal self-supporting bag excluding the bottom for self-supporting, the standing figure is flat at the top, and the bottom is cylindrical.
( 14 ) The flexible packaging bag is chamfered at both corners of the bottom of the ship bottom, has a radius of curvature R of the chamfered portion of 8 mm or more, and has a loosely curved shape with the bottom convex downward. about,
Would provide a more preferable solution.

In addition, the present invention provides a flat film-like check nozzle that generates a check function when a liquid material is interposed in a minute gap between overlapping soft laminate films at one edge of a packaging bag body made of a soft laminate film. and a non-self-supporting flexible packaging bag obtained by projecting the non-self supporting beverage liquid in the drinking water for the double pack packaging bag consisting of extraction material encapsulating the filter bag, formed by the liquid in a sealed filled under airtight A cylindrical container composed of a water / extractable material co-packed package and a soft laminated film for storing the non-self-supporting drinking water / extracted material co-filled package, and one side edge of any of the containers In addition, the above-mentioned nozzle is housed so as to be exposed and provided with a tear-out guide rod for pulling out the nozzle so that the nozzle can be opened, and a self-supporting type in which a bottom portion is provided so that the nozzle can stand on its own. Envelope A container, it is proposed drinking water and extracting material co-filled packaging structure according to claim consisting of.

This drinking water / pouring material co-filled packaging structure
(1) The above drinking water for the double pack packaging bag, it is made of those described in the preceding Symbol have Zureka 1,
(2) The non-self-supporting drinking water / extraction material co-filled packaging body is suspended in the outer packaging container, with the upper end lateral seal portion fused to the upper end of the self-supporting outer packaging container. Stored and held in the
(3) The self-supporting outer packaging container is a self-supporting flexible packaging bag having a ship bottom-shaped bottom portion, and the top portion having a chuck structure that can be opened and closed to replace a non-self-supporting liquid-filled package. ,
(4) The self-supporting outer packaging container has a ship-bottom bottom, and the top is made of a flexible, hard plastic, paper or metal that can be opened and closed to replace a non-self-supporting liquid-filled package. It is composed of a product with a dispenser function,
However, it will provide a more preferable solution.

According to the present invention, the flavors of green tea, black tea, Chinese tea, herbal tea, kobu tea, etc. or coffee extract beverages, that is, taste, aroma, umami, etc., together with their extraction materials , have been sealed for a long time ( Even if the beverage is co-filled in the package) and the beverage is repeatedly poured out from the airtight container (there is a risk of intrusion of outside air), the original flavor of the extracted beverage is impaired. A double pack packaging bag for drinking water can be obtained.

According to the present invention, as a packaging bag for containing such tea or coffee with their extraction material, by using a novel full Rekishiburu packaging bag comprising a film-shaped non-return nozzle with a self-sealing non-return function in a liquid It is possible to reliably prevent quality and flavor deterioration factors of these packaged items (basically, filter bags containing water or an extract and an extraction material ) and prevent flavor deterioration for a long time. In addition, by forming at least a part of the laminated film constituting the film-like check nozzle as a concavo-convex structure film, smooth pouring can be made to the end at any time during re-pouring.

In addition, according to the present invention, the above-described concavo-convex structure is imparted to the packaging bag main body and the film-like check nozzle portion so that the pouring is smooth and an appropriate amount can be poured out at any time. By opening the inner surface of the exit passage in the vicinity including the planned opening position or only in the vicinity including the planned opening position, the film-like check nozzle is cut at a predetermined position to open the packaging bag (opening the packaging bag) After this, both the nozzle and the packaging bag body can reliably prevent this reverse inflow without incurring backflow into the bag of air or the like (air that flows in instead of being poured out) It is possible to keep the remaining packaged items (water, the extract, and the extraction material ) in the bag in the original fresh state for a long time.

  In addition, according to the present invention, by adopting a temporary sealing structure by low-temperature fusing treatment on the inner surface of the nozzle base end portion, a non-return function characteristic is not hindered during handling or the like. A double pack packaging bag for drinking water can be provided. In addition, by providing a concavo-convex structure on the film base end side of the film check nozzle, preferably excluding the tear opening and the vicinity thereof, a packaging bag having excellent pouring characteristics as a whole can be provided.

  Further, in the present invention, by providing a bottom for self-supporting at the lower end of the packaging bag main body, it is not necessary to be housed and fixed in a separate outer packaging container or the like, so that it can stand alone and be used alone. Become. In addition, since the packaging bag body is composed of a three-sided seal bag excluding the bottom for self-supporting, the standing shape is flat and flat at the top even after filling the liquid package in the bag with a liquid seal. Since it can maintain, the non-return function of a film-like nonreturn nozzle can be exhibited effectively.

In addition, according to the present invention, a non-self-supporting drinking water / water-free double-pack packaging bag is obtained by filling a liquid (water or an extract) and a filter bag containing an extraction material in a liquid seal. Without filling the extraction material co-filled packaging into a hard package, it is a self-supporting flexible packaging bag (standing pouch: outer bag), hard plastic, hard paper, metal, etc. The used empty bag is preferably taken out and replaced with a new one in an outer packaging container that is a hard material and has a dispenser function (function that allows flexibility to pressurize the body part to be elastically deformed). By making it possible to store it, it can be used as it is on a desktop or the like as it is, and the discharge of drinking water such as tea and coffee can be stabilized.

Furthermore, according to the present invention, the filter bag for enclosing the extraction material stored in the double pack packaging bag body for drinking water is fixed to the lower part and the side part in the double pack packaging bag, In addition, the non-return action can be stabilized, and the extracted drinking water can be stably poured out.

Cut away the part of the drinking water for the double pack packaging bag is a positive rear view you to clear the stored state of the filter bag. It is an expanded sectional view of the opening planned position of a film-like check nozzle. It is a front view of a film-like check nozzle. It is a partially cutaway perspective view of a drinking water / poured material co-filled package. It is a front view of the packaging structure formed by accommodating and holding the drinking water / poured material co-filled packaging in the outer packaging container. We are a front view showing a self-standing type drinking water for the double pack packaging bag.

The double pack packaging bag for drinking water of the present invention is a combination of an outer large bag (packaging bag body) and a water permeable small bag (filter bag) enclosing an extraction material stored together with water, hot water, etc. in the large bag. It is comprised by the double pack (double bag) structure which becomes. Its large bag, compared flexible package bag body made of a laminated film of soft two-layer or three-layer, good Mashiku is thinner and higher soft laminated plastic film two flatness softer than the bag body (front and back pair ) Are overlapped and face each other, and the inside of the discharge passage formed between the films that overlap in a flat manner exhibits a non-return function that prevents the intrusion of outside air by capillary action through the presence of a liquid substance. The film-like non-return nozzles (liquid dispensing nozzles as disclosed in JP-A-2005-59958) are heat-sealed and attached to the respective side portions, obliquely upward directions, or top portions. Or formed integrally with the packaging bag body.

  The film check nozzle, which is a characteristic configuration of the double pack packaging bag, is, for example, a soft laminated plastic film constituting the nozzle on the inner surface (sealant layer) of the upper side portion of the flexible packaging bag body. With the sealant layer that forms the outermost layer facing each other, the sealant layer at the nozzle base end is fused and joined so that the dispensing passage provided in this nozzle and the inside of the packaging bag body communicate with each other It is.

For example, the film-like check nozzle is preferably a soft laminated plastic film in which a thermoplastic uniaxial or biaxially stretched base film layer and a sealant layer are laminated on both sides (inside and outside) sandwiching it. A sealant layer having a three-layer structure in which two sheets are front and back and a sealant layer facing each other, or a three-layer laminated film in which a single soft laminated plastic film is folded half-width into a front and back pair to face each other A structure is used in which the peripheral portions excluding the base end are fused to each other to form a pouring passage that is substantially wedge-shaped as a whole and the central portion is not fused. However, it may have a two-layer structure in which the base film layers are impulse-sealed.

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

The flexible packaging bag, different fill to (including the extract) water or warm water and receiving filters over bag (hereinafter, including both those referred to as "articles to be packaged") by weight and the presence or absence of autonomy However, in the case of the non-self-supporting type, the packaging bag body is generally constituted by using a thick laminated two-layer film of NY15 / PE60, while the film-like check nozzle is not subjected to the load of the object to be packaged. Therefore, for example, it is preferable to use a thin three-layer soft laminated film composed of a combination of PE20 / NY15 / PE20, and the thinner the film, the better the check function, and it is preferable to use a weak film. Will be better. In addition, a pair of soft laminated plastic films of the front and back surfaces of the film-like non-return nozzle having a higher flatness (flatness) can obtain a higher non-return effect, and during the polymerization of the two front and back soft laminated plastic films. The gap is preferably about 10 to 300 μm. However, this flatness is distinguished from the uneven structure showing the surface roughness described later, and is a form without large undulations and wrinkles over the entire film. The so-called uneven structure is the flat film. It is formed in small units.

  Such a film-like check nozzle is a sealant material used for the inner and outer surfaces (front and back materials) of a pair of soft laminated plastic films that overlap each other (face to face). A thermoplastic resin film of 5 to 80 μm such as polyethylene, polypropylene, ionomer, EVA or EVOH, for example, a heat seal material on the inner surface of the packaging bag body, for example, a sealant layer represented by polyethylene or polypropylene and a heat A film that can be sealed is used. Then, these sealant materials (films) are left in the inner edge portion so as to have a required shape (wedge shape), and the peripheral portion thereof is, for example, by heat sealing, high frequency sealing or impulse sealing, It can be manufactured by fusing.

  In addition, as a base film (support base material) sandwiched between the sealant materials of this film-like check nozzle, biaxially stretched films and uniaxially stretched films generally used for liquid packaging films such as nylon, polyester, polypropylene, EVOH, etc. Is used. Preferably, a uniaxially stretched film having excellent straight cut properties is used. In addition, these films have a high gas barrier film (water vapor transmission film) that has been subjected to vapor deposition or coating with glass, alumina, silica, etc. in order to improve the gas barrier properties in order to ensure a long-term check effect. Use of a low-permeability material is desirable because it improves the adhesive effect due to the increase in liquid concentration due to the evaporation of water vapor, and prevents blocking of the nozzle. The thickness is preferably 5 μm or more and 30 μm or less, for example, in order to maintain the flexibility of the film valve.

  A soft laminated plastic film (however, a base film and a sealant layer having two layers, typically 3 layers (sealant layer [surface material] -base film layer-sealant layer [backing material]), manufactured as described above. The film-like non-return nozzle comprising a layer structure) is formed by a soft lamination of the sealant layer, which is the outer surface of the base end portion, without causing the sealant layers to fuse together on the inner surface side by the following method. Heat-sealed to the sealant layer (sealant layer made of the same kind of film) on the inner surface of the opening provided on one side of the packaging bag body made of film (mainly two layers) and protrudes from the packaging bag body Installed in the finished condition. Thereby, a flexible packaging bag provided with the film-like non-return nozzle which protruded outward from the upper part of the side part, the top part, etc. with respect to the packaging bag main body is obtained.

In the flexible packaging bag according to the present invention, the packaging bag body has a base film layer located on the outer surface thereof and a sealant layer located on the inner and outer surfaces of the same kind as that of the film check nozzle. It can be a base film layer and a sealant layer. However, when the film-like check nozzle and the packaging bag main body are formed separately, an intermediate layer may be interposed between them, unlike the nozzle film. Preferably, the sealant layer forming the inner surface of the packaging bag main body made of a laminated film is made of the same kind of resin material as the outermost sealant layer of the nozzle. According to this, the nozzle and the packaging bag The fusion-bonding strength with the main body can be sufficiently increased.

  And in the case of a non-self-supporting flexible packaging bag, the packaging bag body is preferably constituted by a laminated film of a two-layer or three-layer structure, and a uniaxial or biaxially stretched base film layer of this laminated film, It is preferably composed of a polyethylene terephthalate film layer (PET layer), a nylon resin film layer (NY layer), ethylene vinyl alcohol (EVOH) or the like having a thickness of 8 to 30 μm. Further, the sealant layer of the laminated film used for the packaging bag body may be constituted by 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 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 of the laminated film is large. Therefore, the adhesiveness of the inner surface of the nozzle after the stoppage of the packaged article may be impaired. Moreover, about the sealant layer, when the thickness is less than 10 μm, there is a possibility that sufficient sealing 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.

  In addition, as a laminated film used for the packaging bag body, it is necessary to store a certain amount of liquid and the filter bag containing the extraction material, regardless of whether it is a non-self-supporting type or a self-supporting type described later. Is required. In the present invention, the bending strength per unit width (15 mm) of the laminated film, in other words, the waist is measured with a waist measuring device (mini bear (as shown in FIG. 10 of JP-A-2005-59958). It is preferable that the value measured using a load cell (UL-100GR) is 40 to 300 mN. If the waist is less than 40 mN, the stability of the direction of the pouring of the packaged item from the packaging bag is inferior. There is a risk that the lack of strength will become apparent. On the other hand, if it exceeds 300 mN, the entire check function including the film check nozzle may be lowered regardless of the laminated structure of the laminated film.

By the way, in this film-like check nozzle, for example, a wedge-shaped film-like check nozzle, the film used for fusion-bonding the outer surface of the base end portion to the inner surface of the upper side portion of the packaging bag body. In order to prevent mutual sealing of the sealant layers on the inner surface of the non-return nozzle, a release sheet having a higher melting point or not thermally melting is inserted inside the pouring passage, or the inner and outer surfaces of the nozzle are respectively inserted. Make the sealing temperature of the sealant layer on the inner surface of the nozzle higher than that on the outer surface of the nozzle by changing the sealing temperature of the sealant layer, for example, by changing the material or by changing the extrusion lamination conditions. Etc. are preferred.

  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 [surface], [ For the surface material, it is desirable to use 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. These are necessary for preventing the sealant films on the inner surface of the film-like check nozzle from being heat-sealed when the film-like check nozzle and the bag body are fusion-bonded by heat sealing.

The relationship between the film check nozzle and the packaging bag body is as described above. Is the thickness of the film check nozzle substantially the same as the thickness of the laminated film used for the packaging bag body? 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 / PE10 = 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 check nozzle: PE50 / PET25 / PE50 = 125 μm thickness, packaging bag body: NY15 / PE30 = 45 μm thickness, etc. .
In the case where the laminated film has either a two-layer structure or a three-layer structure, each sealant layer is formed by subjecting the base film layer to a melt extrusion lamination method or a dry lamination method, an extrusion lamination method, a co-extrusion lamination method. It can be laminated by a method or the like.

Here, in order to fill the packaging bag body with a liquid material consisting of water or an extract from among the articles to be packaged, simultaneously with the step of joining the film-like check nozzle to the packaging bag body (heat sealing) Or it is preferable to carry out after the joining step. 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 completely eliminating the gas from the inside of the packaging bag body 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, it is necessary to perform sealing under the condition that the packaged material in the bag is sealed in the air and seal it. This is also necessary to prevent oxidation of the liquid package.

  In the double pack packaging bag of the present invention, the bottom of the ship-shaped self-supporting portion is fused to the lower end portion of the packaging bag body by heat sealing or the like before filling the package bag body with the seal in the liquid. It is good also as a self-supporting double pack packaging bag which forms and becomes a standing pouch. In this case, as a film constituting the packaging bag body, in order to impart self-supporting properties, it is necessary to use a film that is thicker than the non-self-supporting flexible packaging bag, and the base film has a thickness of 50 to 50. It is preferably composed of a polyethylene terephthalate film, nylon resin film, polypropylene or polyethylene having a thickness of 250 μm, preferably 80 to 180 μm. On the other hand, the sealant layer has a thickness of 10 to 60 μm, preferably 10 to 30 μm. It is preferable to configure the above.

  If the thickness of the base film layer is less than 50 μm, water vapor impermeability and gas barrier properties may be insufficient. On the other hand, if the thickness exceeds 250 μm, the bending strength of the laminated film becomes excessively large, This is because the adhesiveness between the inner surfaces of the non-return function nozzle after the stoppage of the packaged article may be impaired.

  Thereby, the double pack packaging bag of the present invention is provided with self-supporting properties, and does not need to be stored and fixed in an outer packaging container or the like, and can be used as it is on a desktop or the like. In this case, it is preferable that the packaging bag body is composed of a three-side seal free-standing bag excluding the bottom for self-supporting, and the reason is that a vertical seal is applied to the left and right side edges of the packaging bag body portion, Even after filling a liquid package with gas-less filling, for example, by filling it with a liquid seal, the standing shape can be maintained flat at the top, that is, it is provided mainly on the upper side of the packaging bag body. The flatness (flatness) of the two front and back plastic films constituting the film-like check nozzle is increased, which guarantees the check function of the film-like check nozzle and makes it possible to It is because it works effectively in maintaining the check function after dispensing.

Next, the filter bag of the articles to be packaged that is co-filled together with the liquid in the packaging bag body is preferably heat-sealed at the time of vertical sealing of the packaging bag body, and the predetermined position (in the packaging bag body). preferably fixed to the bottom) (optionally also be stored in a free state), then it is preferable to carry out the liquid in the seal filling a liquid as described above.

That is, the double pack packaging bag according to the present invention is a tea, such as green tea, barley tea, Chinese tea, black tea, health tea, herbal tea, kobuchi tea, which is an extraction material together with liquid in the packaging bag body of the flexible packaging bag. In order to co-fill tea leaves, powdered tea, granular and powdered coffee, and fruit juice powder, the filter bag is stored together. This filter bag uses a fine mesh-like bag that is excellent in drainage and pouring properties, and is difficult to leak, so that the components of tea and coffee are well extracted and diffused in the co-filled liquid . For example, it is a laminate of paper nonwoven fabric and polyester mesh (Tea Road: registered trademark manufactured by Yamanaka Sangyo), etc., and there are no restrictions on the shape such as various bag shapes and box shapes. For example, in addition to a normal bag shape, a box shape or a tetra pack shape may be used.
In the present invention, in the following description, the double pack packaging bag, eventually Extraction both formed by filling packaging of liquid and Extraction filter bag encapsulating material becomes beverages, drinking water, extracted materials both It is called a filled package.

The material of this filter bag is preferably a natural fiber woven fabric with synthetic fiber sheets such as mesh-like polyolefin fibers on both sides so that it can be fixed to the bottom of the packaging bag body, preferably by heat sealing or impulse sealing. In addition to a laminate or a synthetic fiber sheet, a so-called tea component or coffee component with good extractability can be used, and a microporous metal foil having a filter function can also be used. For example, it is configured to have a fiber gap (opening) in which even a very fine coffee powder, which is said to be under No. 60, is difficult to pass in a dry state, while the coffee powder or tea powder can flow out in a wet state. A thing etc. are suitable.
This filter bag uses tea or coffee as an extraction material inside, and the surroundings are heat sealed, ultrasonic sealed or impulse sealed, and have a thickness of 120 to 160 μm and an air permeability of 36.0 to 50 cc. Those having a density of about / cm ² · sec are preferably used.

By the way, the extracted beverage poured out of the packaged items ( liquid + filter bag) filled ( liquid ) and stored (filter bag) in the flexible packaging bag is close to the tip of the film check nozzle. This is done by cutting out a predetermined opening portion specified by the addition of a tear guide rod or notch to be formed and opening the nozzle. Then, after opening the nozzle, the packaged water, the extraction material co-filled package body is produced by tilting so that the nozzle opening (pouring spout) faces downward, particularly the extract (beverage). Easily achieved by extruding pressure. In this case, the film-like check nozzle made of a soft laminated laminated plastic film is laminated on the front and back sides by applying the water head pressure of the article to be packaged ( liquid ) or pressurizing the trunk of the filled package with fingers. The plastic films bulge apart from each other, and at the same time, the dispensing passage is formed for the first time, and at the same time, the nozzle opening is opened, and the extracted beverage is dispensed.

When extracting the extracted beverage, which is one of the items to be packaged, through the nozzle opening (spout) of the film check nozzle, the packaging bag body made of the laminated film is also used for the extraction of the extracted beverage. Regardless, because of the non-return function of the film-like non-return nozzle, there is no outside air suction (reverse flow), so the packaging bag body contracts or collapses sequentially by an amount corresponding to the volume of its extraction. Will be transformed.

  Thus, a drinking water / extraction material co-packaging package in a state in which drinking water and an extraction material are co-filled in a flexible packaging bag composed of a packaging bag body formed by projecting a film-like check nozzle. As described above, by tilting it, only the required amount of drinking water can be poured out from the inside of the packaging bag. However, when the packaging body is returned to the original standing posture, the nozzle opening portion The drinking water outflow stops. Due to the stoppage of the outflow, the liquid drinking water always remains (stagnates) and gets wet in the dispensing passage of the film check nozzle due to the capillary action. Therefore, at the same time as the stop, the pouring passage (the inner surface of the laminated plastic film) of the film-like check nozzle is in a state of being in close contact with the whole by capillary action, and the nozzle opening remains sealed. Thus, the entry of outside air into the packaging bag body is surely prevented. Therefore, in a packaging bag having such a film-like check nozzle, the packaged material filled in the bag is not only in contact with the outside air, but also during and after the dispensing. It will be in the state of an anaerobic atmosphere that is completely blocked and protected, and the oxidation and contamination of the beverage in the bag will be effectively prevented.

By the way, with respect to the packaging bag body having such a film configuration, the double-pack packaging bag of the present invention in which the above-described film-like check nozzle is protruded corresponds to the case of repeated dispensing, particularly re-injection. Even in the case of dispensing, it is desirable that the liquid be poured out in a smooth and controlled manner as in the first case.
Therefore, in this invention, as shown in FIG. 1, as a packaging bag main body and the said film-like non-return nozzle (pour-out passage), at least one inner surface becomes a concavo-convex structure, that is, the front and back laminated films On the other hand, the parts excluding the respective seals (horizontal seal, vertical seal, nozzle-to-body seal, and nozzle peripheral seal) are embossed, blasted, knurled, wrinkled, vertical and horizontal striped. It is preferable to use one having a concavo-convex structure 14 to which any of the above is applied. The reason for excluding the seal portion is that if there are irregularities in the seal portion, a seal failure will occur.

Mainly, the reason why such an uneven structure 14 is formed on the packaging bag body 2 is that after the drinking water is poured out by the action of the film check nozzle, only the check action of the film check nozzle is obtained. In addition, the inside of the packaging bag body is also prevented from entering (reverse flow) of the outside air, and in the presence of the liquid, a capillary action works between these laminated films to be in a tightly adhered state (return action). In particular, in the packaging bag body, the film shrinks or the bag body collapses by a volume corresponding to a considerable amount of the poured liquid (drinking water) and is strongly fused.
As a result, when the filled drinking water is to be poured out again through the film-like check nozzle, when there is a sufficient liquid amount (liquid height) in the packaging bag body (when the head pressure is high) Smooth pouring is compensated to some extent, but when the amount of liquid in the bag decreases, the head pressure decreases, and the pour pressure loses the adhesive force between the laminated films due to the capillary action. Dispensing and liquid return are 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 vertical and horizontal ranges at least in the vicinity of the film-like check nozzle of the packaging bag body, The stagnation, stagnation and clogging were prevented and the flow path was secured. In other words, in the present invention, in order to relieve the adhesive force due to the capillary action that occurs in the dispensing passage of the film check nozzle and the packaging bag body, without reducing the check action of the film check nozzle, An embossed or blasted process as shown in FIG. 1 , preferably a concavo-convex structure 14 formed of a linear or curved stripe pattern, is given to the laminated film to be superimposed, and the capillary action is weakened particularly in the packaging bag body part. To do so.

  The concavo-convex structure 14 added to the laminated film has a gap between the laminated films on the front and back of the packaging bag main body (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 is Usually, the adhesive force based on the capillary action described above is 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 20 μm or more, preferably 30 μm or more. More preferably, concavities and convexities are provided so as to be 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. Will be 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 striped processing may be performed. These are preferably combined in such a way that the uneven positions are shifted and a constant gap of about 20 to 50 μm is formed. 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 have filled the packaging bag body in a laminated film structure of Tech Barrier NY15 vapor deposition surface / vapor deposition surface Tech Barrier PET12 / XA-HD40 with a liquid seal, and this packaging bag body, that is, drinking water / filling material The co- packed package was tilted, and an experiment was conducted to measure the remaining amount in the bag when the liquid no longer comes out. As a result, as shown in Table 1, it was found that the effect was remarkable when the laminated film subjected to the uneven processing was used. In addition, in this experiment, as shown in FIG. 1, the case which put the vertical stripe pattern by embossing in the film-like non-return nozzle vicinity of this packaging bag main body was compared with the packaging bag main body which has not performed uneven | corrugated processing. 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 the present invention, the concavo-convex structure 14 is formed on the packaging bag main body and the film-like check nozzle outlet passage, that is, at least a part of the non-seal portion, for example, the formation position is at least on the nozzle mounting position side of the main body . Provided as a continuous pattern from its vicinity along the side edge to the film-like check nozzle, or as shown in FIG. 1, provided with a striped uneven structure provided on the film-like check nozzle and the packaging bag body The striped concavo-convex structure may be crossed and provided in a substantially (consecutive) continuous manner. Such a concavo-convex structure is effective for securing a flow path at the time of re-pouring, and these are applied in the form of a partial pattern or an entire pattern as a planar shape, an island shape, or a stripe shape.

  By the way, the concavo-convex structure for ensuring the smooth pouring of the liquid package filled with the liquid seal in the packaging bag body extends from the packaging bag body to the slit opening position of the film check nozzle (preferably Is preferably a series of vertical stripes that are continuous in a straight line or a curved line (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 fimul-like check nozzle even when there is little remaining liquid package in the packaging bag body, Continuing up to the tear opening of the film-like check nozzle is effective in eliminating the weir in the middle due to the folding back of the film.

On the other hand, the provision of such a concavo-convex structure may sometimes obstruct the important check action of the film-like check nozzle. Therefore, in the present invention, while the adhesion force is reduced due to the capillary action, the wettability of the surface is improved with respect to the laminated film, and the surface tension when the liquid material is interposed between the films is reduced, and the wetness is reduced. It is preferable to improve the state and improve the check function described above in conjunction with the creation of a route by the concavo-convex structure .

  For example, an inner surface of a dispensing passage provided in a film-like check nozzle, that is, a passage inner surface formed of a sealant layer, and a self-sealing reverse effect exerted by a liquid package being interposed in the passage by capillary action. In order to make the stop function more reliable, the discharge passage of such a film-like check nozzle has an inner surface in the vicinity including the planned nozzle opening position or an inner surface only in the vicinity including the predetermined nozzle opening position. A wetting layer obtained by performing the following wetting treatment is provided. As the wetting treatment, the surface of the film surface of the laminated film made of a film having a particularly low polarity and low activity such as PE or PP is applied to the surface of the film by a physical method, a chemical method, or a mechanical method. In order to increase the activity, for example, in the physical method, wetting consisting of corona discharge treatment, UV ozone treatment, resin coating treatment surface, metal deposition treatment, electroless plating treatment, metal low temperature spraying treatment, plasma etching treatment, flame treatment By applying the treatment, a method is adopted in which the surface tension is improved by physical surface modification of the film surface and surface modification by generation of polar functional groups, thereby improving the wettability of the film. In addition, this treatment may be a method of treating the film surface with an acid or alkali as defined in JIS K6843-3: 1999, or a mechanical method such as mat processing.

  For example, among the physical wetting processes described above, the corona discharge process refers to the surface of the sample passing between the dielectric and the electrode by generating a corona by applying a high frequency and high voltage between the dielectric and the insulated electrode. Is a method of processing. The mechanism for modifying the surface is considered as follows. That is, the oxygen present in the air is activated by the generated corona, and this oxygen cuts and enters the film molecular chain to generate polar groups (C═O, COOH, C—OH, etc.) and strong. Unevenness is generated on the sample surface by collision of electron energy. As a result, the surface strength and adhesiveness of the film are improved.

Therefore, the inventors experimented on a typical corona discharge for the action effect of the wetting treatment layer. Table 2 shows the results. That is, for a film-like check nozzle having a three-layer structure of LLDPE15 / PET12 / LLDPE20, corona discharge treatment (discharge condition: discharge amount = 81.7 W · min / m) on the inner surface (LLDPE) of the sealant film. ² ) was performed. When the wetting tension of the film was measured with a wetting reagent, the film was 32 N / m before treatment and 56 N / m after treatment. The contact angle with water is as shown in Table 2. The cohesive force of the liquid, that is, the surface tension (S) was weakened, and in all cases, the contact angle (θ) was clearly reduced and the wettability of the film was improved, and the effectiveness of this treatment was confirmed. .

Next , in the present invention, the film-like non-return nozzle is used for controlling the amount of dispensing as shown in FIGS. It is a more preferable embodiment to provide the liquid reservoir 1b.

By adopting such a liquid reservoir 1b, the drinking water led from the packaging bag body to the dispensing passage of the film check nozzle temporarily stays in the liquid reservoir, and the discharge flow rate generally decreases. Above, it will be directed to the tear opening, so that it is possible to avoid the excessive outflow. For this purpose, it is also Ru valid der providing a pouring path inlet upper and / or dammed section becomes projections at the bottom of the check nozzle base end portion (formed in the seal).

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a flexible packaging bag of the present invention. This flexible packaging bag is an example in which a film-like check nozzle 1 for pouring a liquid package is projected on, for example, the upper left edge of a packaging bag body 2 made of a soft laminated film. The sealant layer on the inner surface side of the joint portion 2 is provided with a sealant layer of the outermost layer at the base end of the film-like check nozzle 1, preferably a sealant layer made of the same resin material as the sealant layer of the packaging bag body. They are superposed, heat sealed and fusion bonded. In some cases, the sealant film on the inner surface of the splicing passage of these fusion bonded portions is made of a high melting point, and this portion is fused at a low temperature so that the bonding strength is weak (press the body of the bag body to Can be easily peeled off to pass through the space between the nozzle and the main body).

Here, as the film-like check nozzle 1, 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 both sides of the base film layer are used. Each of the sealant layers laminated on each other, for example, a layer composed of three layers of an unstretched PE layer or a PP layer having a thickness of 5 to 80 μm, preferably 10 to 50 μm, can be exemplified. For example, the product Sofu Irumu disposed on each side of the front and back, i.e., front and back sheets of the product contour are both like the same wedge Sofu Irumu or, a single product formed by folding the front and rear in the central portion the Sofu Irumu, in mutual opposite orientation of inner surface sealant layer, bags Kakuhen part excluding the base end side, preferably by heat sealing, by fusing to each other as shown hatched in FIG. 1 Construct in a shape.

Such a film-shaped non-return nozzle 1, 2, of Figure 1, as shown in the enlarged cross sectional view taken along the line II-II of the nozzle the width direction, of each of the front and back that are fused to one another product Sofu Irumu 3 and 4 have a three-layer structure of base film layers 5, 5 ′ and sealant layers 6, 6 ′, 7, 7 ′ laminated on both sides of the base film layers 5, 5 ′. The opposing inner surface side sealant layers 6 and 6 'are suitable over a predetermined width, for example, a width of 0.5 to 3 mm, preferably a width of 1.0 to 2.0 mm, in the peripheral portion excluding the base end side. In addition, by heat-sealing, it can be easily and quickly manufactured by fusing it to have a required shape (wedge shape).

  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. At the nozzle base end, the outer surface side sealant layers 7 and 7 'are fused to the inner surface (sealant layer) of the packaging bag body 2 preferably by heat sealing, so that the packaging bag body 2 In addition, it can be joined properly, reliably and easily.

The outer surface of the film check nozzle 1, that is, the outer surface of the outer surface side sealant layers 7, 7 ′ from the tear line (scheduled opening portion) to the base end side is prevented from dripping out of the liquid. It is preferable to provide a water-repellent or oil-repellent coating layer (water-repellent or oil-repellent coating layer) 10 for improving the temperature at least along the opening end and the lower edge. At the same time, as described above, the wetting treatment layer 11 is provided on the inner surface of the inner sealant layer 6 of the film check nozzle 1 (inner surface of the dispensing passage) to assist the function of preventing the backflow of air. .

  As the water repellent material, a water repellent coating agent made of silicone oil, fluorine resin, acrylic resin or amide resin is used, and as the oil repellent material, oil repellent such as silicon resin, Teflon resin, or silicon modified acrylic resin is used. Using coating agents, urethane, acrylic, ester, nitrified cotton, amide, vinyl chloride, rubber, styrene, olefin, vinyl chloride, cellulose, phenol, etc. as binders Added.

Further, the film-like check nozzle 1 is preferably provided with a spire-like protrusion 1c for preventing dripping at a position slightly closer to the base end side than the planned opening at the lower edge, and this protrusion 1c. Is provided in order to prevent dripping generated from the opening end of the film check nozzle 1 from being transferred from the lower edge of the film check nozzle 1 to the packaging bag body 2. Further, it is preferable to provide the water-repellent or oil-repellent coating layer 10 also on the dripping prevention protrusion 1c, whereby the drainage can be further improved.

The film-like check nozzle 1 configured as described above is used at the same time as filling the liquid bag with a liquid package in the packaging bag body 2 made of a laminated film, or prior to filling the liquid package with a liquid seal. For example, the sealant layers 7 and 7 ′ on the outer surface of the base end of the nozzle 1 are preferably formed 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. It becomes a part of the packaging bag by fusion-bonding by heat sealing.

  In such a flexible packaging bag, drinking water, which is one of the objects to be packaged, is filled with a filter bag F containing the extraction material M, which is already stored, preferably in a liquid seal under evacuation. Thus, the drinking water / extractable material co-filled package 8 takes the full form as illustrated in FIG. However, the flexible packaging bag itself shown in FIG. 4 is not usually self-supporting or fixed, so that it is shown in FIG. 5 for transporting, storing, displaying, using, etc. It is housed and used in an outer packaging container 9 having a self-supporting dispensing function as described in detail. That is, the outer packaging container 9 is preferably a so-called standing pouch P made of a soft laminated film, for example, in addition to a plastic hard container including paper. By this standing pouch P, the above-mentioned drinking water / extracting material co-filled package 8 is provided with self-supporting property and formability, and can be used as it is on a tabletop or the like.

Further, in the flexible packaging bag of the present invention, as shown in FIG. 6, the bottom 16 of the ship bottom shape is fusion-bonded to the lower end portion of the packaging bag main body of the flexible packaging bag by heat sealing or the like, so that the flexible packaging bag itself is self-supporting. Sexuality may be imparted. In this case, the drinking water / extraction material co-filled package 8 does not need to be accommodated in the outer packaging container 9 as shown in FIG. 5 and can be used as it is. In the case of such a self-supporting drinking water / extracting material co-filled package 8, as the laminated film constituting the packaging bag body, the laminated film having a high thickness or stiffness is provided so as to have self-supporting property and regularity. It is necessary to use a film. The thickness of the base film layer is 50 to 250 μm, preferably 80 to 180 μm, the thickness of the sealant layer is 10 to 60 μm, preferably 10 to 30 μm, and the stiffness is preferably about 40 to 300 mN. .

  In addition, it is preferable that both corners of the self-supporting flexible packaging bag are chamfered so that the bottom portion has a gently curved shape with a downward convexity, whereby both corner portions of the bottom portion are grounded to the floor surface. The entire bottom end of the drinking water / extracting material co-filled packaging body 8 is attached to the floor surface without being hit, and the packaging body 8 can be secured in a self-supporting and stable manner.

In addition, it is preferable to chamfer both corners of the bottom of the ship bottom shape of the drinking water / extracting material co-filled package 8 so that the radius of curvature R is 8 mm or more, and more preferably in the range of 8 to 20 mm. In particular, the radius of curvature R is preferably formed so as to gradually become smaller toward the bottom of the drinking water / extractable material co-filled package 8 . The reason why the radius of curvature R is set to 8 mm or more is that, when the radius is less than 8 mm, both corners of the bottom of the ship bottom shape come into contact with the floor surface, and the central portion of the drinking water / extraction material co-filled package 8 is lifted. is there.

By the way, when using such a drinking water / extracting material co-filled package 8, for example, if it is a non-self-supporting type, the front end side of the planned tear portion of the film check nozzle 1 is removed by tearing. Alternatively, the standing pouch P that is the outer packaging container 9 is tilted with the liquid packaged item (extracted drinking water) in the flexible packaging bag in a state where the nozzle opening, that is, the spout is secured. Then, the film-like check nozzle 1 is poured out without intruding or sucking outside air from a spout provided in the nozzle. On the other hand, when the pouring is stopped based on the standing and returning of the standing pouch P, the inner surface of the film-like non-return nozzle is intervened with a liquid film to be packaged that wets the inner surface, that is, a liquid film composed of the pouring region. Below, this is made to adhere | attach over the whole and the penetration | invasion of the outside air into this packaging bag main body 2 is prevented reliably.

According to this, the drinking water / extraction formed by co-packing the extraction bag obtained by sealing the liquid packaged material in the liquid and filling the extraction bag M in the packaging bag body 2. The material co-filled package 8 can be dispensed without any external air being taken into the packaging bag body 2 under contraction or crushing deformation corresponding to the extraction amount of the extracted beverage. At the same time, after the pouring is stopped, the packaging bag main body 2 is prevented from intruding into the packaging bag main body by tightly sealing with the non-return function of the inner surface of the pouring passage of the film check nozzle. This will surely prevent the extracted beverage remaining inside from being oxidized by the outside air.

  After the required amount of the extracted beverage has been poured out, the standing pouch P that is the outer packaging container 9 is returned to the standing posture to stop the pouring, and at the same time, the tip of the film-like check nozzle 1 is stopped. It provides automatic close and close of the spout provided.

  Here, the close contact due to the check function of the film check nozzle 1 is as described above, when the film check nozzle 1 is released from the water head pressure, and the laminated films 3 and 4 on the front and back sides. However, when the film-like check nozzle 1 is restored to the original shape at the time of manufacture and the extracted beverage in the film-like check nozzle 1 is returned to the packaging bag body 2, the front and back films 3 and 4 are brought into a reduced-pressure atmosphere. By placing the inner surfaces of the soft films (sealant layers 6, 6 ') on each other, the negative pressure is applied to the entire nozzle width with the aid of the capillary action of the liquid adhering to this surface. It is performed by being adsorbed. 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 present invention, as described above, the laminated films 3 and 4 of the raw material are formed at the time of bag making or bag making so that the inner surfaces of the packaging bag main body 2 and the film-like check nozzle 1 show the uneven structure 14. Pouring after ensuring the smooth flow of the liquid package as a whole by relaxing the capillary action under the liquid substance interposition between the laminated films resulting from heat press processing etc., is easy to the end I can do it.

  On the other hand, this may cause excessive pouring of the liquid package from the nozzle. In order to prevent this, in the present invention, as shown in FIGS. A dispensing amount control liquid reservoir 1b that swells in the lower part is provided adjacent to the base end side (packaging bag main body side), and the discharge flow is temporarily retained in this zone. It is a preferred embodiment to prevent pouring and provide stable dispensing.

Furthermore, in the present invention, as shown in FIGS . 3 and 4, a damming portion 17 for the purpose of rectifying the pouring flow is provided at the sealing portion at the base end portion of the pouring passage of the film check nozzle 1. provided always to discharge the quantification can be achieved.

Next, the present invention also comprises drinking water obtained by filling together the filter bag F formed by enclosing the water (extracted liquid) L and the extraction material M in the flexible packaging bag described above, which has no self-supporting property or formability. -Holds the drinking water / extracted material co-filled packaging body 8 in a self-supporting outer packaging container 9 having a dispensing function so that it can be used as it is on a tabletop. Proposed drinking water / extracting material co-filled packaging structure. That is, since the flexible packaging bag formed by projecting the above-described film-like check nozzle 1 is made of a soft laminated film, it is self-supporting even if it is filled and stored. because there is no, this to provide for use as it is, the outer packaging container 9 having a dispenser function because of flexibility in other freestanding, i.e. be used in combination with standing Po Uchi P etc. It is necessary.

  The film check nozzle 1 used in the present invention has a base end portion protruding from the side portion of the soft packaging bag main body 2, most of the upper end portion protruding from the side portion, and the outer surface side being low. By using a high-melting film as the melting point sealant layer, and fusion-bonding with the high-melting point sealant layer on the inner surface of the packaging bag body 2, the sealant layer at the base end portion of the film check nozzle 1 is used, for example, It is good also as the temporary sealing part 12 made into the state fuse | melted by the relatively low temperature with the adhesive strength of half or less of original heat seal intensity | strength.

By adopting the temporary sealing portion 12, for example, even when the filled article to be packed is heated to 50 to 100 ° C. and a required extraction component is extracted, the film-like check nozzle 1 , the majority of the pouring path, and at the same time can be sufficiently protected from the permanent deformation orientation inflating the pouring path, until the opening of the reverse stop nozzle (cut the tip) is packaging bag body An effect of temporarily preventing the article to be packaged from inadvertently entering the dispensing passage of the check nozzle is exhibited.

  Therefore, the function of the film-like check nozzle 1 can be sufficiently exerted on the portion of the film-like check nozzle on the tip side of the temporary sealing portion 12 (so-called nozzle dispensing passage). When the extracted beverage is poured out, it is possible to completely prevent the outside air from entering the packaging bag body. Moreover, the self-seal check function at the time of stopping the pouring of the packaged item can be sufficiently exhibited.

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

In both of the packaging bag and the packaging bag described above, the heat seal strength of the temporary sealing portion 12 is 0.3 to 3 (N / 15 mm), particularly 0.7 to 1 (N / 15 mm). The above-mentioned range prevents accidental opening of the temporary sealing portion 12 while intentionally opening the temporary sealing portion without affecting the other fusion bonded portions. Is preferable.
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 relationship with the volume of the bag in the heated liquid package, 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. .

  The load for opening the temporary sealing portion 12 should be in the range of 50 to 350 (N), particularly 100 to 200 (N), leading to breakage of bags at other locations including the sealing portion. However, it is necessary to prevent accidental opening during transportation and work. If 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 with the packaged object, and conversely, 350 (N) This is because, when the temperature exceeds 60 degrees or the heat seal strength is too high, other fusion-bonded portions may be affected by the load required to open the temporary sealing portion.

  According to the study by the present inventors, for example, the base end portion of the film-like check nozzle 1 as shown in FIG. 1 is placed at a low temperature melt on the upper side portion of the flexible packaging bag body 2 (NY15 / PET12 / LLDPE40). The laminated structure of the film-like non-return nozzle film is a linear low density polyethylene layer (low melting point sealant layer) / biaxially stretched polyethylene terephthalate layer / linear chain. Of the temporary sealing portion 12 when the laminated film is 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, as a low-density polyethylene layer (high melting point sealant layer). The heat seal strength (N / 15 mm) was measured with a tensile tester (TENSILON RTG-1300) at a tensile speed of 200 mm / min. It was measured under the conditions of beam width 15mm. The results are shown in Table 3.

As a method of storing the filter bag F in the packaging bag body 2 in the flexible packaging bag described above with or without being fixed, the filter bag F is simply loaded in the packaging bag body 2 and then the liquid is sealed in the liquid. A method of filling, a filter bag F in a packaging bag body, a method of heat-sealing after filling with liquid after degassing, a filter bag F being attached to a predetermined position of the film by impulse sealing, etc. A method of sealing and filling with liquid and then sealing in liquid , or a method of attaching a filter bag F in advance to a predetermined position of a film, sealing it vertically and horizontally, degassing, filling the liquid and heat sealing, etc. by.

Next, in the present invention, in a non-self-supporting flexible packaging bag formed by projecting the film-like check nozzle 1 at the position of, for example, the upper side portion of a packaging bag body made of a soft laminated film. In order to help the self-supporting of the non-independent drinking water / extracting material co-filled packaging body 8 containing the filter bag F containing the liquid and the extracting material, the outside of the self-supporting type having a cylindrical dispensing function as described below. A packaging container, for example, a pouch-like container such as a standing pouch P is provided, and a drinking water / extracting material co-packing packaging structure is proposed.

In the present invention, the outer packaging container 9 used for storing the above-described non-self-supporting beverage / extraction material co-filled packaging body 8 is formed of a laminated film having a cylindrical bag shape at least in the lower part. In particular, a self-supporting flexible packaging bag (standing pouch P) provided with a ship bottom-shaped bottom 16 so that it can be self-supporting is preferably used. And as this outer packaging container 9, it is substantially the same shape as the said film-like non-return nozzle 1 in the one edge part used as the position corresponding to the said film-like non-return nozzle 1, for example, the upper part of a side edge part like the example of illustration. A standing pouch 9 provided with a protruding sachet 15 surrounding the nozzle is preferably used. Incidentally, as this outer packaging container 9, a flexible material, such as plastic, be those having a paper or metal dispenser function (the packaging bag body portion pressurizing be packaged can dispense) Also good.

Further, the outer packaging container 9 having the dispenser function is preferably heat-sealed together with the top of the packaging bag body 2 of the beverage / extraction material co-filled packaging body 8 as shown in FIG. Alternatively, the top portion can be opened and closed by a chuck or the like, or the top portion is embossed and sealed to the main body, and the co-filled packaging body 8 is stored in an exchangeable manner, or other outer packaging container 9 Those that can be replaced are preferred.

In the present invention, the combination of both the above-described non-self-supporting flexible packaging bag and the self-supporting outer packaging container 9 with the standing pouch P as a suitable example is suitable, and a liquid-filled packaging structure is obtained by this combination.
In the present invention, the self-supporting outer packaging container 9 preferably having a self-supporting dispensing function is composed 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 polyethylene. A film having a form of a standing pouch P or the like using a laminated film formed of a terephthalate film layer or a nylon resin film layer and the sealant layer including a polyethylene layer or a polypropylene layer is preferably used. However, in the present invention, the outer packaging container 9 is not limited to such a bag-like tending pouch P made of a flexible film, but at least the main body portion is made of other self-supporting cylindrical plastic containers or paper (film laminates). And aluminum or stainless steel.

  The overhanging pouch 15 surrounding the nozzle provided on the one side upper part of the self-supporting dispensing outer packaging container bag 9 has an upper edge at a position corresponding to the position of the tear opening of the film check nozzle 1. Alternatively, a tearing guide rod for opening such as an I notch, V notch, U notch, base notch or diamond cut provided at the lower edge portion is provided, and a cutout portion 15a for exposing the film-like check nozzle 1 as shown in FIG. Is provided. By cutting and opening the cutout portion 15a, the above-described non-self-supporting double pack packaging bag housed therein, that is, a film-like check nozzle 1 protruding from the drinking water / extraction material co-packaging body 8 is provided. The protruding portion can be exposed, and the nozzle opening 1a is further opened for use.

  In the present invention, after the drinking water / extracting material co-filled package 8 is stored in the standing pouch P, in some cases, as shown in FIG. It is heat-sealed and fused together over a part (spot) or the entire width of the upper side, and stored in a suspended state. In such a case, the liquid-filled package 8 filled with the liquid can be held firmly in the standing pouch P, and has the effect of assisting the smooth outflow of the liquid package. . Moreover, in this case, it becomes possible to sufficiently protect against various impacts during handling and distribution of the drinking water / extractable material co-filled package 8, and the liquid-filled package 8 Misalignment is eliminated, and pinholes and the like, deformation and breakage of the film-like check nozzle, and erroneous opening can be prevented.

  In addition, after the drinking water / extracted material co-filled package 8 is stored in the standing pouch P, it is in the vicinity of the film-like non-return nozzle 1, particularly in the vicinity of the bottom or in the top, or in one or two places in the top of the packaging bag body. As described above, further, fixing the bottom portion is effective in effectively acting when all the extracted beverage is smoothly poured out to the end.

  The role of the outer packaging container described above is to hold the drinking water / extraction material co-filled packaging body 8 housed therein, and to push out the extracted beverage filled in the flexible packaging bag in a liquid packaging bag. It has a so-called dispenser function that presses the flexible packaging bag to smoothly send out and discharge the extracted beverage from the bag body with the help of the uneven structure 14 described above to the film check nozzle 1 part. It is to get. Therefore, in this invention, the outer packaging container which has a dispensing function is used effectively by having the flexibility mentioned above and elastically deforming.

  The technology of the present invention is not only a double pack packaging bag having a film-like check nozzle and a drinking water / extracting material co-packing packaging structure using the same, but also a general liquid filling packaging body, especially a packaging bag body. The present invention can also be applied to a packaging structure or the like that contains a refillable soft packaging bag having a general liquid spout integrally formed therewith.

DESCRIPTION OF SYMBOLS 1 Film check nozzle 1a Planned opening part 1b Liquid reservoir part
1c Dripping prevention protrusion 2 Packaging bag body 3, 4 Laminated film 5, 5 'Base film layer 6, 6' Inner sealant layer 7, 7 'Outer sealant layer 8 Drinking water / extracting material co-packaging body 9 Outer packaging container 10 Water repellent / oil repellent coating layer 11 Wetting layer 12 Temporary sealing portion 13 Outlet passage 14 Uneven structure 15 Overhanging pouch 15a Cutout portion 16 Bottom portion
17 Weir Block P Self-supporting dispensing outer packaging container (standing pouch)
F Filter bag M Extract material

Claims (20)

When a liquid material is present in an outlet passage formed between overlapping soft laminated plastic films at one edge of a packaging bag body made of a soft laminated film, the film is brought into close contact with the outside air by the close contact action between the films. A flexible packaging bag having a flat film-like check nozzle that projects a check function to prevent intrusion; and
A filter bag encapsulating extraction materials such as teas, coffee, and fruits, which is stored in a hermetic seal together with the liquid filled in the flexible packaging bag,
Tona is, the film-like non-return nozzle, the nozzle inlet portion of this base end seal portion, characterized that you have dammed section is provided for closing the top or a part of the bottom of the pouring path Double pack packaging bag for drinking water.   Either one or both of the inner surface of the non-seal portion of the packaging bag body and the inner surface of the pouring passage of the film-like check nozzle have a wetting treatment layer, and the wetting treatment layer of the film-like check nozzle The double pack packaging bag for drinking water according to claim 1, wherein the double pack packaging bag for drinking water is provided on the inner surface in the vicinity thereof including the planned opening position.   Either one or both of the inner surface of the non-seal portion of the packaging bag body and the inner surface of the pouring passage of the film-like check nozzle have a wetting treatment layer, and the wetting treatment layer of the film-like check nozzle The double-pack packaging bag for drinking water according to claim 1, wherein the double-pack packaging bag for drinking water according to claim 1 is provided on an inner surface only in the vicinity thereof including a planned opening position.   The flexible packaging bag has a non-sealed portion of each of the laminated films forming the front and back surfaces of the packaging bag main body and the film check nozzle. The double pack packaging bag for drinking water according to any one of claims 1 to 3, wherein a straight or curved concavo-convex structure is imparted up to the position.   The wetting treatment includes at least one of a corona discharge treatment, a UV ozone treatment, a resin coating treatment surface, a metal deposition treatment, an electroless plating treatment, a metal low temperature spray treatment, a plasma etching treatment, and a flame treatment. The double pack packaging bag for drinking water according to any one of claims 1 to 4.   The concavo-convex structure imparted to the laminated film is obtained by embossing, blasting, knurling, wrinkling, vertical / horizontal stripe processing on one or both of the front and back laminated films in a planar shape, island shape, or stripe shape. The double pack packaging bag for drinking water according to any one of claims 1 to 5, wherein the double pack packaging bag is formed as a partial pattern or a full pattern.   The concave and convex structure portions of the pair of laminated films on the front and back sides 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. The double pack packaging bag for drinking water of any one of -6. The film-like non-return nozzle is composed of two thin soft laminated plastic films that are overlapped with each other at the peripheral portion except the portion that becomes the nozzle base end, and a non-fusion spout passage is provided at the central portion. Compartment, the side of the packaging bag body, the base end of this is fusion bonded,
When the packaged article is poured out by tilting the packaging bag body, the inner surfaces of the soft laminated plastics that are in a wet state in the dispensing passage when the packaged article passes through are separated from each other. The non-return function which prevents intrusion of external air is demonstrated by the mutual adhesion | attachment effect | action by the thing to be packaged interposing on the inner surface of a channel | path, The any one of Claims 1-7 characterized by the above-mentioned. Double pack packaging bag for drinking water. Proximal end portion of the film-shaped non-return nozzle, by a low temperature fusion of the facing sealant layers, according to any one of claims 1-8 for the pouring passage surface is characterized by being sealed temporary sealing Double pack packaging bag for drinking water. The liquid according to any one of claims 1 to 9 , wherein the liquid is an aqueous solution containing water or an extraction component, and the room temperature water or hot water is sealed in the flexible packaging bag in the liquid. Double pack packaging bag for drinking water as described. The filter bag is made of paper, cloth, or synthetic resin that has water permeability and has a filter function that prevents elution to the outside even if the leaf-like, granular, and powder-like material to be sealed is retained inside. It is comprised with the metal foil which has a woven fabric, a nonwoven fabric, and a fine hole, The double pack packaging bag for drinking water of any one of Claims 1-10 characterized by the above-mentioned. The double bag packaging bag for drinking water according to any one of claims 1 to 11 , wherein the filter bag is fixed to a bottom portion and a side portion in the flexible packaging bag. The double-pack packaging bag for drinking water according to any one of claims 1 to 12 , wherein a bottom portion for self-supporting is provided at a lower end of the packaging bag body of the flexible packaging bag. The double pack for drinking water according to claim 13 , wherein the flexible packaging bag is a three-side seal self-supporting bag excluding the bottom part for self-supporting, the standing figure is flat at the upper part and the lower part is cylindrical. Packaging bag. The flexible packaging bag is characterized in that both corners of the bottom portion of the ship bottom shape are chamfered, the radius of curvature R of the chamfered portion is 8 mm or more, and the bottom portion has a gently curved shape with a downward convexity. The double pack packaging bag for drinking water according to claim 13 or 14 . A flat film non-return nozzle that projects a non-return function when a liquid material is interposed in a minute gap between overlapping soft multi-layer films is projected from one edge of a packaging bag body made of a soft multi-layer film. Non-self-supporting drinking water / extraction material co-packaging, in which liquid is stored in a double-pack packaging bag for drinking water consisting of a non-self-supporting flexible packaging bag and a filter bag for containing the extraction material, and sealed in liquid under airtightness. Body,
A cylindrical container made of a soft laminated film for storing the non-self-supporting drinking water / extractable material co-filled packaging body, and the nozzle is accommodated in one of the side edges so as to be exposed. And a self-supporting outer packaging container that is provided with a protruding portion that can be opened by providing a tearing guide for pulling out a nozzle for pulling it out, and that is provided with a bottom so as to be self-supporting,
A drinking water / extracting material co-packaging packaging structure characterized by comprising: 17. The drinking water / extracting material co-packing type packaging structure according to claim 16 , wherein the double-pack packaging bag for drinking water comprises the one according to any one of claims 1 to 12. . The non-self-supporting drinking water / extractable material co-filled package is a state in which the upper seal portion of the upper seal is fused to the upper end portion of the self-supporting outer packaging container and suspended in the outer packaging container. The drinking water / extracting material co-packing type packaging structure according to claim 16 or 17 , wherein the packaging structure is filled and held in the container. The self-supporting outer packaging container is a self-supporting flexible packaging bag having a ship bottom-shaped bottom portion, and the top portion having a chuck structure that can be opened and closed in order to replace a non-self-supporting liquid filling package. The drinking water / extracting material co-filled packaging structure according to any one of claims 16 to 18 . The self-supporting outer packaging container has a ship-bottomed bottom, and the top is a flexible, hard plastic, paper or metal dispenser that can be opened and closed to replace a non-self-supporting liquid-filled package. drinking water, extracted material co-filled packaging structure according to any one of claims 16-18, characterized in that it is composed of those with functions.

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