JP2661868B2 - Liquid storage bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid storage bag for storing a liquid such as a detergent.

[0002]

2. Description of the Related Art Conventionally, liquid detergents used in homes and the like are sold in resin containers.
For example, when the detergent in the container runs out, a refill detergent in a resin bag is purchased, and the refill detergent is refilled in an empty container.

However, when refilling the refilling detergent into an empty container as described above, the refilling operation is carried out by holding a flexible resin bag in a hand, and since the bag is flexible, the mouth of the bag is closed. The position is unstable, and it takes time and effort to perform the refilling operation by aligning the mouth of the container with the mouth of the bag, and there is a problem in that the detergent spills out of the container when careless.

In order to solve this problem, a resin bag containing a refill detergent is placed in an empty container, and protrudes downward from a pump member with a nozzle serving as a liquid take-out portion provided at the upper end of the container. There is known a configuration in which a suction tube is pierced into the bag, and the detergent in the bag is taken out from a nozzle by operating the pump member up and down. In this case, not only the portion where the suction tube pierces, but also the entire bag is composed of a laminated film obtained by laminating a stretched nylon film and a polyolefin film, and the stretched nylon film is a suction tube by a force when the suction tube pierces. Has a property that it is easily torn by applying a force in the direction of tearing at the tip of the stretched nylon film, and the polyolefin film laminated on this stretched nylon film also synchronizes with the stretched nylon film when piercing the suction tube into the bag. When the laminate film is torn at the tip of the suction tube due to the force of the time, air enters the inside of the bag through the crack around the hole through which the suction tube penetrated, and the amount of detergent inside the bag becomes small. Even if you operate the pump member It sucks air from the stomach-inclusive for the tube, there is a problem that can not be taken out of the bag inside of the detergent to the end. In addition, when the container falls down, the detergent inside the bag leaks from the tear in the container, and there is a problem that the leaked detergent causes the inside of the container to become dirty and the detergent to leak out of the container.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problem, and it is possible to remove almost all of the liquid inside the bag without puncturing the hole of the bag even if the tube is pierced into the bag. It is another object of the present invention to provide a liquid storage bag in which the liquid inside the bag does not leak inside the container even if the container falls down.

[0006]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention is directed to a synthetic resin having a bottom at the lower end capable of piercing a swollen liquid extracting tube at a lower end, and having a tapered upper end. A stand-pack type liquid storage bag, comprising a stretched nylon film and a polyolefin-based film laminated and bonded to each other, and a portion other than the bottom portion of the first laminate film in which the polyolefin-based film is located inside the bag. Wherein the bottom portion is formed by a second laminated film having an unstretched nylon film and a polyolefin-based film laminated and adhered to each other and a polyolefin-based film positioned inside the bag. is there. Further, the present invention is characterized in that a layer of a polyolefin-based film that is not adhered to the laminate film is provided on the inside of the bag rather than the second laminate film at the bottom.

As described above, in the stand-pack type liquid storage bag, the bottom portion is constituted by a laminated film layer obtained by laminating and bonding an unstretched nylon film and a polyolefin film, and furthermore, the inner side of the laminated film layer By providing a layer of polyolefin film so as to overlap without adhering to the layer of laminate film, the bottom part becomes weak against external pressure, but it is difficult to sell liquid storage bags at stores. When the liquid storage bag is erected, the bottom part having a low strength against external pressure is located at the lower end, and is protected from external pressure, and damage to the bottom part can be prevented. Moreover, as described in the previous embodiment, the stand-pack type liquid storage bag of the present invention is used when the lower end of a tube inserted into the container so that the bottom faces upward and protruding downward from the liquid outlet is pierced into the bottom. Since the bottom is made of the above-mentioned material, it is easy to pierce, and the hole at the piercing part is in close contact with the tube without tearing. Can be almost completely taken out. In particular, as described above, by providing a layer of a polyolefin-based film so as to overlap without adhering to the layer of the laminate film inside the layer of the laminate film, even if a puncture of the tube occurs in the case of a tube in the layer of the laminate film, The hole in the pierced portion of the polyolefin film layer on the inner side is closely attached to the tube, so that air does not easily enter the inside of the bag, and even if the amount of liquid inside the bag becomes small, the liquid inside the bag is almost completely taken out. be able to.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment shown in FIGS. 1 to 5 will be described. Reference numeral 1 denotes a synthetic resin bag for storing a liquid such as a detergent. 2 and has a bulging bottom 3 at the lower end, and has a form of a stand-up having a narrowed upper end. By the way, as the material of the bag 1, at least the bottom portion 3 is a laminated film formed by laminating and bonding an unstretched nylon film 3a and a polyolefin film 3b as shown in FIG. 2, and the other portions are stretched. A laminated film obtained by laminating and bonding a nylon film and a polyolefin film is used. A portion other than the bottom portion 3 and the polyolefin film on the bottom portion 3 are located inside, and the polyolefin film is fused by heat sealing to form a bag 1 in the form of a stand pack.

Reference numeral 4 denotes a vertically long synthetic resin container main body having an open upper end for inserting the bag 1 for storing the liquid such as the detergent in an upside-down state so that the bottom portion 3 is the upper end. The opening is closed by a lid 5 made of the same synthetic resin as the container body 4. Holes 6, 6 are formed on both sides of the upper end of the container body 4, and the claw pieces 7, 7 hanging from the lid 5 engage with the holes 6, 6 from the inside of the upper end of the container body 4, and 4 and the lid 5 are connected. A pump member 8 serving as a liquid take-out unit is attached to the lid 5. The lower end of a tube 9 projecting downward from the pump member 8 pierces the bottom 3 of the bag 1 located at the upper end, and near the lower end of the bag 1. It is located. More specifically, the tube 9 is made of medium-density polyethylene, polypropylene, or the like, and the tip thereof is cut obliquely and sharp, and the bottom 3 of the bag 1 is made of an unstretched nylon film 3a and a polyolefin-based film 3.
Since the tube 9 is made of a laminated film obtained by laminating and adhering b, when the tube 9 pierces the bottom 3 of the bag 1, the hole in the pierced portion adheres to the tube 9 without the bottom 3 of the bag 1 being torn. It is supposed to. Reference numeral 10 denotes a nozzle serving as a liquid outlet provided in the pump member 8 for extracting the liquid sucked by the tube 9. When the bag 1 is put into the container body 4, the liquid in the bag 1 is turned upside down so that the bottom 3 of the bag 1 located at the upper end is flattened with the bag 1 turned upside down. The lower end and both sides of the bag 1 are bent to squeeze the bag 1, and the size of the inside of the container body 4 is set in advance so that this state can be maintained when the bag 1 is put in the container body 4. I have.

Next, the method of use in the above configuration will be described. First, for example, a bag 1 for storing a liquid such as a detergent at home is turned upside down and set in a container body 4. At this time, the lower end and both sides of the bag 1 are bent such that the bottom 3 of the bag 1 located at the upper end of the bag 1 is flattened with the liquid inside the bag 1 turned upside down with the bag 1 turned upside down.
And the bag 1 is set in the container body 4 in this state.
As a result, the bottom 3 of the bag 1 is flattened, and the tube 9 of the pump member 8 is easily pierced into the bottom 3 of the bag 1 when the lid 5 is attached to the upper end of the container body 4.
If the lid 5 is attached to the upper end of the container main body 4, the liquid in the bag 1 is sucked up by the tube 9 by pushing down the head of the pump member 8 and then returning the pump member 8 upward, and the operation is repeated several times. The liquid is intermittently withdrawn from the nozzle 10. As described above, when the tube 9 pierces the bottom portion 3 of the bag 1, the bottom portion 3 is made of a laminated film formed by laminating and bonding an unstretched nylon film 3a and a polyolefin film 3b. The bottom portion 3 of the bag 1 adheres to the tube 9 without tearing, so that air does not easily enter the inside of the bag 1 and even if the liquid inside the bag 1 becomes small, the liquid inside the bag 1 can be taken out to the end. Further, even if the container body 4 falls, the liquid inside the bag 1 does not leak inside the container body 4.

In order to determine whether or not liquid leaks from the pierced portion when the tube 9 pierces the bottom 3 of the bag 1, a load of 80 kg is applied to the side of the bag 1 by applying a load of 80 kg to the side of the bag 1. As a result of performing a compression resistance test in accordance with the compression resistance test of the third standard for additives and the compression resistance test of the container and package B-2, no liquid leakage was detected.

Incidentally, the container body 4 may be transparent or opaque. If transparent, the remaining amount of the liquid in the bag 1 can be confirmed from outside the container body 4. In addition, as shown by a two-dot chain line in FIG.
Is provided in the vertical direction, the remaining amount of the liquid in the bag 1 can be confirmed. Further, the configurations of the container body 4 and the pump member 8 are not limited to those shown in the drawings. Further, a member having a liquid outlet and a tube may be used without having a pump function.

The liquid to be taken out into the container body 4 is not only detergent used in kitchens and the like, but also liquid seasonings such as oil and soy sauce, milk, juice, shampoo, rinse and treatment. A liquid having a viscosity may be used.

Further, in the above embodiment, at least the bottom portion 3 of the bag 1 is constituted by a laminated film composed of two layers of an unstretched nylon film 3a and a polyolefin film 3b, but as shown in FIG. A layer of a polyolefin film 3c may be provided inside a layer of a laminated film composed of two layers of 3a and a polyolefin film 3b so as to overlap without being bonded to the layer of the laminated film. By providing the layer of the polyolefin film 3c inside the layer of the laminate film in this way, even if a puncture of the tube 9 occurs in the laminate film by any chance, the hole in the piercing portion of the polyolefin film 3c inside the film may be formed. Adheres tightly to the tube 9, makes it difficult for air to enter inside the bag, and even if the liquid inside the bag becomes small,
The liquid inside the bag can be almost completely removed. Preferably, unstretched polyolefin-based films are used as the polyolefin-based films 3b and 3c, whereby the adhesion when the tube 9 is pierced is further improved.

Incidentally, a barrier layer made of a resin such as an ethylene-polyvinyl alcohol copolymer or vinylidene chloride may be provided between the unstretched nylon film 3a and the polyolefin-based film 3b. This barrier layer may be provided by laminating an unstretched film or by coating. Further, another film may be laminated outside the unstretched nylon film 3a.

[0016]

As described above, according to the present invention, in a stand-pack type liquid storage bag, the bottom portion is constituted by a laminated film layer formed by laminating and bonding an unstretched nylon film and a polyolefin film. By providing a layer of a polyolefin film inside the layer of the laminate film so as to overlap without adhering to the layer of the laminate film, the strength of the bottom portion against external pressure is weak, but the liquid storage bag is When the liquid storage bag is erected for sale at a store or the like, the bottom part having low strength against external pressure is located at the lower end, and is protected from external pressure, and damage to the bottom part can be prevented. Moreover, as described in the previous embodiment, the stand-pack type liquid storage bag of the present invention is used when the lower end of a tube inserted into the container so that the bottom faces upward and protruding downward from the liquid outlet is pierced into the bottom. ,
Since the bottom part is made of the above-mentioned material, it is easy to pierce, and the hole at the piercing part adheres tightly to the tube without tearing, it is difficult for air to enter the inside of the bag, and even if the amount of liquid inside the bag becomes small, the liquid inside the bag can be removed. It can be taken out almost to the end. In particular, as described above, by providing a layer of a polyolefin-based film so as to overlap without adhering to the layer of the laminate film inside the layer of the laminate film, even if a puncture of the tube occurs in the layer of the laminate film by any chance, The hole in the pierced portion of the polyolefin film layer on the inner side is closely attached to the tube, so that air does not easily enter the inside of the bag, and even if the amount of liquid inside the bag becomes small, the liquid inside the bag is almost completely taken out. be able to.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a liquid storage bag, a container body, and a lid according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a bottom portion of the liquid storage bag.

FIG. 3 is a front view showing a state in which a liquid storage bag is set in the container main body and a lid is attached to an upper end of the container main body.

FIG. 4 is a front view showing a state where a lid is attached to the container body.

FIG. 5 is a sectional view of the same.

FIG. 6 is an enlarged sectional view of a portion where a tube is pierced in another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag 2 Sealing part 3 Bottom part 3a Unstretched nylon film 3b Polyolefin film 3c Polyolefin film 4 Container main body 5 Cover 6 Hole 7 Nail piece 8 Pump member 9 Tube 10 Nozzle

Claims (2)

(57) [Claims] 1. A liquid made of a synthetic resin and swelled at a lower end.
It has a bottom that can pierce the removal tube and
A stand-pack type liquid storage bag having a constricted end, comprising a stretched nylon foil laminated and adhered to each other.
Having an il film and a polyolefin film
The first where the polyolefin film is located inside the bag
Forming a part other than the bottom part with a laminate film of
Unstretched nylon film and polio laminated to each other
Polyolefin having a refining film
A second laminate film in which the base film is located inside the bag.
A liquid storage bag , wherein the bottom is formed of an illum. 2. The second laminated film at the bottom
The inside of the bag is not glued to this laminated film
The liquid storage bag according to claim 1 , wherein layers of a polyolefin-based film are provided in an overlapping manner .