JPH11193039A - Package bag with discharge function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent liquid escape toward a bag main body during the discharge of liquid contents, ensure excellent fixed-quantity function and discharge stability, and discharge the contents swiftly and continuously, by making a liquid storage compartment and the fixed-quantity compartment, which has a discharge opening closable by itself, communicate with each other via a film nonreturn valve. SOLUTION: In a package bag 1, a fixed-quantity compartment 3 adjacent to a liquid storage compartment 2 is partitioned with a film valve 5 for reverse-flow prevention, and a discharge opening 4 closable by itself is provided so as to communicate with the fixed-quantity compartment 3. The widthwise upper-end 8 of the valve 5 is joined to one of side-wall members 11 by heat seal, and a lower end 9 is joined to the other side-wall member by heat seal with an unsealed part 10 left, thereby constituting so that the liquid storage compartment 2 and the fixed-quantity compartment 3 communicate with each other. When liquid contents are filled into the package bag 1, the contents flow into the fixed-quantity compartment 3 from the liquid storage compartment 2 via the unsealed part 10 of the valve 5. To let the liquid contents out, the fixed-quantity compartment 3 is pressed after the front end of the discharge opening 4 is unsealed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of dispensing a fixed amount of liquid contents such as liquid detergent, shampoo, disinfectant, soy sauce, sauce and tomato ketchup stored in a bag.
The present invention relates to a packaging bag with a fixed quantity dispensing function having a self-closing spout.

[0002]

2. Description of the Related Art A self-closing spout made of a flexible material such as a plastic film so that liquid stored in a bag does not flow out even after being opened once and left as it is. Liquid packaging bags are known. (For example, Japanese Utility Model Application Laid-open No. Sho 62-93040, etc.) Also, by applying an external pressure to a specific portion adjacent to the spout of the packaging bag, a packaging bag capable of quantitatively discharging the contents can be used. Japanese Patent Application Laid-Open No. 4-54109) has proposed a packaging bag having a quantitative function, which is separated into two chambers, a storage bag portion and a quantitative bag portion, by heat-sealing the packaging bag. (Japanese Patent Application Laid-Open No. 8-119348)

[0003] However, the liquid packaging bag described in Japanese Utility Model Application Laid-Open No. 62-93040 does not have a quantitative function, and has a drawback that it becomes difficult to dispense when the content is reduced. Further, in the packaging bag described in Japanese Utility Model Publication No. 4-54109, although there is a certain amount of quantification function, when external pressure is applied, the contents return to the main body side of the bag (liquid escape), and the dispensing becomes unstable and the quantification becomes unstable. There is a problem that it is not good. And Japanese Patent Laid-Open No. 8-
In the packaging bag described in Japanese Patent Publication No. 119348, the storage bag portion and the fixed amount bag portion are separated from each other, so that the quantitativeness is assured.
Although it is better than the packaging bag described in Japanese Patent Application Publication No. H10-284, it is impossible to completely prevent the liquid from escaping from the fixed amount bag portion to the storage bag portion, and the pouring stability and the quantitativeness are insufficient. In addition, it takes time to move the contents from the storage bag section to the fixed amount bag section, and it is difficult to continuously pour out the contents in a short period of time, especially for contents having high viscosity. Was.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve these problems of the prior art, and to provide a packaging bag having a self-closing spout from which liquid stored in the bag does not flow even after being opened. Prevents liquid from escaping into the bag body when dispensing liquid contents, ensuring excellent quantification function and stability of dispensing, and enables quick and continuous dispensing of contents regardless of viscosity or remaining amount of contents. It is an object of the present invention to provide a packaging bag with a fixed-quantity dispensing function, which can be dispensed into a container.

[0005]

The present invention has the following configuration to achieve the above object. 1. A dispensing function formed of a flexible material and having a liquid storage chamber, a quantitative chamber partitioned from the liquid storage chamber by a film-shaped valve communicating with the liquid storage chamber, and a self-closing spout communicating with the quantitative chamber. With packaging bag. 2. The packaging bag with an ejection function according to 1, wherein the metering chamber is provided adjacent to the liquid storage chamber in the packaging bag body. 3. The packaging bag with an ejection function according to 1, wherein the metering chamber is provided in a branched shape from the packaging bag body. 4. One end in the width direction of the film-shaped valve for partitioning the liquid storage chamber and the fixed amount chamber is joined to one side wall member of the packaging bag, and the other end in the width direction of the film-shaped valve is the packaging bag. Characterized by being joined to the side wall member on the other side.
The packaging bag with a pouring function according to any one of the above. 5. The packaging bag with a pouring function according to 4, wherein the cross-sectional shape of the film-shaped valve that partitions the liquid storage chamber and the metering chamber when used from the side is S-shaped. 6. The packaging bag with a pouring function according to 4, wherein the cross-sectional shape of the film-shaped valve used for partitioning the liquid storage chamber and the metering chamber when used from the side is V-shaped. 7. The packaging with a pouring function according to 4, wherein the cross-sectional shape of the film-shaped valve that partitions the liquid storage chamber and the fixed quantity chamber when used from the side is an inverted V-shape or an inverted U-shape. bag. 8. The liquid storage chamber and the metering chamber communicate with each other by an unjoined portion provided partially at a joint between the film-shaped valve and the side wall member of the packaging bag. A packaging bag with a pouring function according to the item. 9. The packaging bag with a pouring function according to any one of 1 to 7, wherein the liquid storage chamber and the fixed quantity chamber communicate with each other by a hole or a slit provided in the film-shaped valve. 10. The packaging bag with a dispensing function according to any one of 1 to 9, wherein the packaging bag has a plurality of quantitative chambers and a self-closing spout communicating with the quantitative chambers.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing an example of a packaging bag with a pouring function of the present invention, and FIG. 1 is a perspective view of the packaging bag before filling contents. FIGS. 2 and 3 are partially enlarged schematic views of a fixed amount chamber and a spout showing a state where the contents are filled in the packaging bag of FIG. 1. FIG. 2 is a view showing a state where the spout is closed. FIG. 4 is a view showing a state in which a spout is opened. 2 and 3, (A) is a schematic cross-sectional view of a metering chamber and a spout, and (B) is a diagram illustrating a state of contents in a valve (central portion) and a spout, respectively.

This packaging bag 1 is obtained by heat-sealing two side wall members 11 and 12 at both side portions 6, 6 and a lower end portion 7, and heat-sealing the upper end portion of the packaging bag after filling the contents. is there. The packaging bag 1 is provided with a metering chamber 3 adjacent to the liquid storage chamber 2 and a self-closing spout 4 communicating with the metering chamber 3. The liquid storage chamber 2 and the metering chamber 3 are partitioned by a film-shaped valve 5, and the upper end 8 in the width direction of the valve 5 is joined to one of the side wall members 11 by heat sealing, and the lower end in the width direction of the valve 5. 9 is the other side wall member 1
2 by heat sealing. Further, both end portions in the length direction of the valve 5 are provided on both side portions 6 on the side wall members 11 and 12.
6 is heat-sealed. The lower end 9 of the valve 5 is provided with an unsealed portion 10 at the center thereof so that the liquid storage chamber 2 and the fixed quantity chamber 3 communicate with each other.

When the packaging bag 1 is filled with a liquid content,
As shown in FIG. 2, the contents flow from the liquid storage chamber 2 to the metering chamber 3 through the unsealed portion 10 of the valve 5. At this time, if the internal pressure of the liquid storage chamber 2 is Po and the internal pressure of the fixed quantity chamber is P, then P <Po. The packaging material constituting the packaging bag 2 is as follows:
The connection between the outlet 4 and the fixed volume chamber 3 is bent along the heat seal portion 7 by the pressure of the liquid content into a V-shape, and the opposing side walls of the outlet are brought into close contact with each other, so that the length of the outlet 4 is adjusted. By doing so, the spout 4 has a self-closing property even after the tip of the spout 4 is opened, so that the liquid content does not flow out.

In order to take out the liquid content from the packaging bag 1, the tip of the spout 4 is opened as shown in FIG. 3, and then the metering chamber 3 is pressed by hand or a jig. At this time, P> Po, and the spout 4 is no longer broken, so the spout 4 is opened and the liquid content is poured out. At this time, the liquid content tends to flow backward from the quantification chamber 3 to the liquid storage chamber 2 (FIG. 3B). However, since the valve 5 is closed, the backflow of the content is prevented, and the quantification chamber is prevented. The contents in 3 are the spout 4
, The stability of the dispensing and excellent quantitativeness can be ensured.

In the packaging bag of the present invention, there are no particular restrictions on the shapes of the liquid storage chamber, the metering chamber, and the spout. For example, FIGS.
And various shapes. At this time, the spout may not be provided at the center of the packaging bag as shown in FIG. The width w of the spout, the length h after opening the spout, the opening angle θ of the spout entrance (see FIGS. 4 and 5), the shape of the spout, and the like are appropriately determined according to the viscosity and amount of the contents. Just set it. In general, when the width w of the spout is widened, the pourability is good but the closeability is poor, so that it becomes suitable for high-viscosity contents. When the width w of the spout is reduced, the pourability is poor but the closeability is improved, so that it is suitable for low-viscosity contents. Also, the opening angle θ of the inlet of the spout
Can be selected from the range of 0 <θ ≦ 180 °, but it is usually preferable that 45 ° ≦ θ ≦ 180 °. When the opening angle θ is large, the closeability is improved but the pourability is deteriorated, so that the material is suitable for low-viscosity contents. When the opening angle θ is small, the closing property is deteriorated, but the pourability is improved, so that it is suitable for high-viscosity contents. And, if the length h of the spout is shortened, a liquid leakage of the contents occurs.
It is preferable that the length h be longer than the position of the tip of the V-shaped bend that closes the spout.

At the lower end of the packaging bag 1, an easy-opening portion 13 and a tearing tab 14 are provided as shown in FIGS. 4 and 7 to facilitate opening of the tip of the spout 4. Can be. Examples of such easily opened portions include an I-shaped or V-shaped notch formed at the end of the bag, a perforation or a score crossing the tip of the spout 4, and other thinned portions. As a method of forming such an easy-opening portion, (1) machining with a blade, a grindstone, or the like;
(2) thermal processing using a heat bar or the like; (3) laser processing; and (4) electric discharge processing such as corona discharge or plasma discharge.

In the packaging bag 1 shown in FIGS.
And the metering chamber 3 are partitioned by a film-shaped valve 5 having an S-shaped cross section in use when viewed from the side, and a liquid storage chamber is formed by an unsealed portion 10 provided at a lower heat-seal portion 9 of the valve 5. 2 and the metering chamber 3 communicate with each other, but the shape and communication structure of the valve can be modified into various forms. FIGS. 9 to 13 are views showing another embodiment of the film-shaped valve for partitioning the liquid storage chamber and the metering chamber. In these figures, (A) is a perspective view of a film-shaped valve (central portion), and (B) shows a state in which contents are filled in a packaging bag partitioned by the film-shaped valve. It is a partial side cross-section schematic diagram of the packaging bag in part AA.

The valve 5 shown in FIGS. 9 and 10 has an S-shaped cross section as viewed from the side as in FIGS. 1 to 3 when used. The lower ends 9 of the 5 are entirely heat-sealed to the side wall members 12 respectively. In the valve of FIG. 9, a hole 20 is provided at the lower end of the valve 5 to allow the liquid storage chamber 2 to communicate with the metering chamber 3, and a slit 30 is similarly provided at the lower end of the valve 5 in the valve of FIG. .

The valve 5 shown in FIG. 11 is formed by heat-sealing two films 21 and 22 at a lower end 9 thereof.
8 is heat-sealed to the side wall members 11 and 12, and is configured such that the cross-sectional shape when used as viewed from the side surface becomes V-shaped. The unsealed portion 1 is provided at the lower heat-seal portion 9 of the valve 5.
0 is provided, and the liquid storage chamber 2 and the metering chamber 3 communicate with each other.

The valve 5 shown in FIG. 12 is formed by heat-sealing two films 21 and 22 at the upper end portion 8, and the films 21 and 22 are respectively formed at the lower end portions 9 and 22.
9 is heat-sealed to the side wall members 11 and 12 so that the cross-sectional shape when used as viewed from the side becomes an inverted V-shape. Unsealed portions 10 and 10 are provided at the lower heat seal portions 9 and 9 of the valve 5, and the liquid storage chamber 2 and the fixed quantity chamber 3 communicate with each other. Note that the valve 5 may be formed from a single film.

The valve 5 shown in FIG. 13 is formed by bending a single film 31 into an inverted U-shape when used from the side,
The lower ends 9, 9 are heat-sealed to the side wall members 11, 12. Unsealed portions 10 and 10 are provided at the lower heat seal portions 9 and 9 of the valve 5, and the liquid storage chamber 2 and the fixed quantity chamber 3 communicate with each other. In the valve 5 of FIGS.
The liquid storage chamber 2 and the fixed quantity chamber 3 are communicated with each other by providing an unsealed portion 10 at the lower end heat-sealed portion 9. It is good also as composition which makes room 2 and fixed quantity room 3 communicate.

The form of the packaging bag of the present invention is not particularly limited, and the present invention can be applied to various types of packaging bags such as a flat bag, a pillow bag, a gusset bag, and a standing pouch. 14 to 16 are views showing another embodiment of the packaging bag of the present invention, and FIG. 14 is a perspective view showing an example in which the present invention is applied to a standing pouch. FIG. 15 is a schematic cross-sectional view showing a state where contents are filled in the pouch of FIG. 14, and FIG. 16 is a schematic cross-sectional view showing a use state of the pouch of FIG.

In this standing pouch 1, a branch chamber 16 having a spout 4 and a metering chamber 3 at the tip is formed by extending the side wall of the pouch outward at a position below the top 15 of the pouch. Inside the branch chamber 16, like the packaging bag of FIGS.
Are heat-sealed to the side wall members at the upper end 8 and the lower end 9, respectively, to define the liquid storage chamber 2 and the fixed quantity chamber 3. At the center of the lower end 9, an unsealed portion 10 is provided so that the liquid storage chamber 2 and the fixed amount chamber 3 communicate with each other.

In this standing pouch, after filling the contents into the pouch from the top 15 of the pouch, the top 15
Heat seal and seal the pouch. To use the pouch, for example, the pouch is inverted by engaging an engagement hole 17 formed in the bottom of the pouch with a locking tool such as a hook 18 (see FIG. 16). Into the metering chamber 3 through the valve 5. Next,
When the tip of the spout 4 is opened and the quantitative chamber 3 is pressed with a hand or a jig, the spout 4 is opened and the contents in the quantitative chamber 3 can be taken out. From the fixed amount chamber 3 to the liquid storage room 2
The escape of the contents into the inside is prevented by the film-shaped valve 5, and the contents in the metering chamber 3 are all poured out from the spout 4, so that the stability of the pouring and excellent quantitativeness are ensured. Can be. When the pressing of the metering chamber 3 is stopped, the contents are again filled from the liquid storage chamber 2 through the valve 5 into the metering chamber 3, and the packaging material forming the pouch 1 is fixed to the spout 4 by the pressure of the contents. It is bent into a V-shape at the connection with the chamber 3, and the side walls of the spout 4 are brought into close contact with each other to close the spout 4.

In the above example, one fixed chamber 3 and one spout 4 are formed by providing one branch chamber 16 on the side wall of the standing pouch 1, but a plurality of branch chambers are provided on the side wall of the pouch, For example, it may be configured to have a plurality of quantitative chambers having different capacities and a spout. Further, the plurality of metering chambers and the spouts can be provided not only in a branched pouch but also in a packaging bag having no branching chamber such as a normal flat bag or a gusset bag as shown in FIG.

In the packaging bag of the present invention, the material constituting the packaging bag body and the film-shaped valve is not particularly limited, and any flexible material can be used, but usually a plastic material is used. Is preferred. Examples of the plastic material suitable for forming the packaging bag body include crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene-1, crystalline poly-4-methylpentene-1, low-, medium- Or high-density polyethylene, ethylene-vinyl acetate copolymer (EVA), EVA
Saponified product, ethylene-ethyl acrylate copolymer (EE
A), ion-crosslinked olefin copolymer (ionomer)
Polyolefins such as polystyrene and styrene-butadiene copolymer; aromatic vinyl copolymers such as polyvinyl chloride and vinylidene chloride resin; polyacrylic resins; acrylonitrile-styrene copolymer and acrylonitrile A nitrile polymer such as a styrene-butadiene copolymer; nylon 6, nylon 6
6. Polyamides such as para- or meta-xylylene adipamide; polyesters such as polyethylene terephthalate and polytetramethylene terephthalate; various polycarbonates; fluororesins; and thermoplastic resins such as polyacetals such as polyoxymethylene. it can.
The packaging bag body is usually composed of an unstretched or uniaxially or biaxially stretched film or sheet made of these plastic materials.

The packaging bag body of the present invention can be constituted by a single layer of these plastic films or sheets or by laminating two or more of them. One or two of these plastic films or sheets can be laminated. A metal foil such as aluminum or the like, paper, cellophane, or the like may be bonded to the above. In particular, in the case of contents requiring gas barrier properties, a polyvinylidene chloride resin layer, a layer of saponified EVA, a resin layer having a deposited film of a metal oxide such as aluminum or silicon oxide, a metal foil of aluminum or the like It is preferable to use a laminate containing When manufacturing these laminates, an anchoring agent composed of an epoxy resin, a urethane resin, a polyethyleneimine resin, or the like can be interposed between the respective layers as necessary.

In order to impart rigidity or heat insulation to the film or sheet constituting the packaging bag, a film or sheet made of a foam of various synthetic resins can be used. Films or sheets filled with additives such as calcium and carbon can also be used. Whether the plastic film or sheet serving as the packaging bag body has a single layer or what kind of layer configuration may be selected depending on the properties of the contents to be filled in the packaging bag.

In the packaging bag of the present invention, the material constituting the film-shaped valve may be a single layer or a multi-layer film, but a plastic material having both sides heat-sealing to the inner surface of the bag body is used. Is preferred. Examples of the plastic material suitable for forming the film-shaped valve include polyethylene, polypropylene, polyolefins such as ethylene-propylene copolymer and ethylene-vinyl acetate copolymer, and acrylic resins.

[0025]

EXAMPLES Next, the present invention will be described in more detail with reference to Examples, but these Examples do not limit the present invention. (Example 1) As a side wall member constituting a packaging bag body, a biaxially stretched nylon film having a thickness of 15 μm and a thickness of 130 μm were used.
using a two-layer film obtained by dry laminating a linear low-density polyethylene film with a urethane-based adhesive.
Using a linear low-density polyethylene film having a thickness of 30 μm as a film constituting the valve, and having a valve having a valve having a S-shaped cross section when viewed from the side when used as shown in FIGS. A packaging bag was made. In this packaging bag, an opening tab 14 as shown in FIG. The outer dimensions of the packaging bag body were 200 mm in height and 100 mm in width, and the widths of the heat seals on both sides and the lower end were 5 mm and 12 mm, respectively. Valve 5 is 100 mm long and 30 mm wide
The lower end 9 of the valve is 40 mm from the lower end of the packaging bag body.
Are arranged at a distance of The width of the heat seal with the side wall members 11 and 12 at the upper end 8 and the lower end 9 of the valve is 5 mm, and the heat seal at the lower end 9 of the valve is provided with a 15 mm long unsealed portion 10 at the center. Was. The spout was formed such that the opening angle θ of the spout inlet was 120 °, the width w of the spout was 4 mm, and the length h of the spout after opening was 10 mm.

(Embodiment 2) In the same manner as in Embodiment 1 except that the valve 5 is provided with a slit 30 shown in FIG. To make a packaging bag with a pouring function. The slit 30 was a straight line having a length of 10 mm. The heat seal width between the lower end 9 of the valve 5 and the side wall member 12 was set to 2 mm near the slit, and the slit was disposed 1 mm above the slit.

Embodiment 3 The same as Embodiment 1 except that a valve 5 having a V-shaped cross section shown in FIG. 11 was used instead of the valve having an S-shaped cross section viewed from the side. To prepare a packaging bag with a pouring function. The V-shaped valve 5 is formed by stacking two films used to form the S-shaped valve in Example 1, heat-sealing the lower end portion with a width of 5 mm, and lengthening the central portion. It was formed by providing an unsealed portion 10 of 15 mm. The width of the heat seal with the side wall member at the upper end portions 8 of the valve was 5 mm.

(Embodiment 4) In place of the S-shaped valve viewed from the side, a valve 5 having an inverted U-shaped cross section shown in FIG. A packaging bag with a pouring function was prepared in the same manner. The inverted U-shaped valve was formed by applying the film used to form the S-shaped valve in Example 1 to a length of 100 m.
m, cut into a size of 50 mm in width, and bent at the center so as to have a width of 25 mm. Also,
The width of the heat seal with the side wall member at the lower end portions 9 and 9 of the valve was 5 mm, and an unsealed portion having a length of 15 mm was provided at the center.

(Example 5) The same film as in Example 1 was used as a side wall member constituting the packaging bag main body and a film constituting the valve, and two quantification chambers having different capacities were provided at the lower end of the bag shown in FIG. A packaging bag with a pouring function provided with 41 and 42 was produced. The outer dimensions of this packaging bag body are 200m high
m and a width of 200 mm, and two fixed quantity chambers were formed by providing a heat sealing portion 43 having a width of 10 mm at the center of the lower end of the bag. The volume of the metering chambers 41 and 42 is determined by the distance between the lower ends of the valves 5 and 5, which define each metering chamber, and the lower end of the packaging bag.
The difference was made between 0 mm and 40 mm. Other configurations of the packaging bag are the same as those of the packaging bag of the first embodiment.

Comparative Example 1 A packaging bag with a pouring function was formed in the same manner as in Example 1 except that the valve 5 was not provided.

(Comparative Example 2) An example was adopted except that the packaging bag main body was divided into a liquid storage chamber and a fixed quantity chamber by heat sealing a portion 70 mm from the lower end of the packaging bag without providing a film-shaped valve. In the same manner as in Example 1, a packaging bag with a pouring function was prepared. In addition, the band-shaped heat-sealed portion for the partition had a width of 5 mm, and an unsealed portion having a length of 5 mm was provided at the center.

The packaging bags of Examples 1 to 4 and Comparative Examples 1 and 2 were filled with 100 ml of synthetic detergent for kitchen, and the packaging bag of Example 5 was filled with 180 ml of synthetic detergent and sealed. The presence / absence of liquid escape into the liquid storage chamber and the quantitative properties, and the time required for the content liquid to fill the quantitative chamber again after pouring were compared. The results are shown in Table 1.

[0033]

[Table 1]

In the containers of Examples 1 to 5, a constant amount of the content liquid could be rapidly and continuously discharged regardless of the remaining amount. In Comparative Example 1, the content liquid escaped upward, resulting in poor pourability. The remaining amount was reduced and the pour could not be performed. In Comparative Example 2, since the content liquid slightly escaped upward, the quantitative property was poor, and it took about 30 seconds for the content liquid to fill the metering chamber, and could not be continuously poured.

The contents to be stored in the packaging bag of the present invention are not particularly limited, and liquid or gel-like ones such as liquid detergent, shampoo, rinse, disinfectant, soy sauce, sauce and tomato ketchup are preferably stored. be able to.

[0036]

According to the above construction, the packaging bag of the present invention can be used for discharging a packaging bag having a self-closing spout provided with a self-closing spout so that liquid stored in the bag does not flow out even after opening. Prevents the contents from escaping into the bag body during the operation, ensuring excellent quantification function and stability of dispensing, and swiftly and continuously injects the contents irrespective of the viscosity and remaining amount of the contents. This invention has a very high practical value, for example, it is possible to provide a plurality of quantification functions having different capacities if desired.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a packaging bag with a pouring function of the present invention.

FIG. 2 is a partially enlarged schematic view showing a state where contents are filled in the packaging bag of FIG. 1, and is a view showing a state where a spout is closed.

FIG. 3 is a partially enlarged schematic view showing a state where contents are filled in the packaging bag of FIG. 1, and is a view showing a state where a spout is opened.

FIG. 4 is a schematic view showing another example of a metering chamber and a spout provided in the packaging bag of the present invention.

FIG. 5 is a schematic diagram showing another example of the metering chamber and the spout provided in the packaging bag of the present invention.

FIG. 6 is a schematic diagram showing another example of a metering chamber and a spout provided in the packaging bag of the present invention.

FIG. 7 is a schematic diagram showing another example of a metering chamber and a spout provided in the packaging bag of the present invention.

FIG. 8 is a schematic diagram showing another example of the metering chamber and the spout provided in the packaging bag of the present invention.

FIG. 9 is a schematic view showing another example of the film-shaped valve in the packaging bag of the present invention.

FIG. 10 is a schematic view showing another example of the film-shaped valve in the packaging bag of the present invention.

FIG. 11 is a schematic view showing another example of the film-shaped valve in the packaging bag of the present invention.

FIG. 12 is a schematic view showing another example of the film-shaped valve in the packaging bag of the present invention.

FIG. 13 is a schematic view showing another example of the film-shaped valve in the packaging bag of the present invention.

FIG. 14 is a perspective view showing another example of the packaging bag of the present invention.

FIG. 15 is a schematic cross-sectional view showing a state where contents are filled in the packaging bag of FIG. 14;

FIG. 16 is a schematic sectional view showing a use state of the packaging bag of FIG. 14;

FIG. 17 is a plan view showing another example of the packaging bag of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Liquid storage chamber 3, 41, 42 Quantitative chamber 4 Injection port 5 Valve 6, 7, 8, 9, 43 Heat seal part 10 Unseal part 11, 12 Side wall member 13 Easy-opening processing part 14 Tab 15 Top part 16 Branch room 17 Engagement hole 18 Hook 20 Hole 21, 22, 31 Film 30 Slit

Claims (10)

[Claims] A liquid storage chamber formed of a flexible material;
A packaging bag with a dispensing function having a self-closing spout that communicates with the liquid storage chamber and is separated from the liquid storage chamber by a film-shaped valve and separated from the liquid storage chamber. 2. The packaging bag with a pouring function according to claim 1, wherein the metering chamber is provided adjacent to the liquid storage chamber in the packaging bag body. 3. The packaging bag with a pouring function according to claim 1, wherein the metering chamber is provided in a branch shape from the packaging bag body. 4. A film-shaped valve defining a liquid storage chamber and a metering chamber has one end in the width direction joined to one side wall member of the packaging bag, and the other end in the width direction of the film-shaped valve. The packaging bag with an ejection function according to any one of claims 1 to 3, wherein the packaging bag is joined to a side wall member on the other side of the packaging bag. 5. The packaging according to claim 4, wherein the cross-sectional shape of the film-shaped valve that partitions the liquid storage chamber and the fixed volume chamber when used from the side is S-shaped. bag. 6. The package with a pouring function according to claim 4, wherein the cross-sectional shape of the film-shaped valve used for partitioning the liquid storage chamber and the metering chamber when used from the side is V-shaped. bag. 7. The method according to claim 4, wherein the cross-sectional shape of the film-shaped valve that separates the liquid storage chamber and the metering chamber when used from the side is an inverted V-shape or an inverted U-shape. Packaging bag with a pouring function. 8. The liquid storage chamber and the metering chamber communicate with each other by an unjoined portion provided partially at a joined portion between the film-shaped valve and the side wall member of the packaging bag.
8. The packaging bag with a pouring function according to any one of 7 above. 9. A dispensing function according to claim 1, wherein the liquid storage chamber and the metering chamber communicate with each other by a hole or a slit provided in the film-shaped valve. Packaging bag. 10. The method according to claim 1, further comprising a plurality of metering chambers and a self-closing spout communicating with the metering chambers.
10. The packaging bag with a pouring function according to any one of 9.