JP5591640B2 - Liquid container and assembly method - Google Patents

Description

  The present invention relates to a liquid container used for storing or transporting liquids such as liquid foods or medicines, particularly electronics industry chemicals, a liner used therefor, and a method for incorporating the liner into a container body.

  Conventionally, metal or plastic containers have been generally used to store or transport liquids such as liquid foods or medicines. Since this type of container is expensive, it cannot be disposable, and is generally washed and used repeatedly. However, such a container is often provided with a valve structure for taking out the liquid filled therein, but the cleaning of that portion is quite complicated. Moreover, when storing or transporting chemicals for electronic industry using such a container, it is necessary to manage the residual dust in the container after cleaning when repeatedly using the container, which requires considerable labor. .

  In recent years, in order to improve such problems, an inner liner made of a synthetic resin film or the like is used in combination with a rigid outer frame container, and this inner liner is replaced every time it is used, thereby eliminating or simplifying cleaning. In addition, a liquid container has been proposed in which the contents can be smoothly discharged to the end (Patent Documents 1 and 2).

  The liquid container liner disclosed in Patent Document 1 or 2 is provided with an inlet for filling the liquid and an outlet port member for discharging the filled liquid. This mouth member is sometimes referred to as a spout. This spout is for connecting the liner to the bottom of the container or a valved discharge pipe provided in the container, and the liquid filled in the liner is discharged to the outside through the spout and the discharge pipe.

  Therefore, such a liquid container liner needs to be provided with a spout prior to liquid filling. When the spout is attached to the liner, it is necessary to attach the spout by, for example, inserting a jig into the liner and making a hole in the liner. However, when such a series of operations is performed, foreign matters are mixed in the liner, and the inside of the liner is contaminated.

  Further, since the liquid container liner disclosed in Patent Document 1 or 2 covers the main body portion of the liquid container, the filled liquid does not contact the container main body. However, after passing through the spout, the liquid directly contacts the inside of the discharge pipe. As a result, it is necessary to clean the discharge pipe, and when sufficient cleaning is not performed, contamination in the discharge pipe or residual dust becomes a problem.

  A method for improving such a problem has also been proposed. That is, Patent Document 3 discloses an inner bag for a container for a container having a structure in which a liquid does not directly contact not only in a container main body but also in a discharge pipe portion. However, this container inner bag has a complicated structure, so the manufacturing cost is high, and it is necessary to attach parts such as a mounting cylinder to the inner bag main body, which contaminates the inside of the inner bag. The problem cannot be solved.

JP-A-8-337288 JP 2004-244104 A JP 2007-302273 A Japanese Patent No. 3464232

  The present invention relates to a liquid container in which the liquid stored in the liquid container is not in direct contact with not only the inside of the container body but also the inside of the discharge pipe, and the stored liquid is not contaminated by foreign matter, and the like. It is intended to provide a container assembly method.

The liquid container according to the present invention comprises:
A liquid container comprising a liquid container body and a discharge pipe provided at a lower portion of the liquid container body;
A valve member comprising a discharge pipe connecting pipe and a valve;
An inner liner capable of storing liquid therein,
The inner liner comprises a liner body portion and a tubular liquid discharge portion;
The tubular liquid discharge part is disposed so as to penetrate the inside of the discharge pipe, and an inner side of the tubular liquid discharge part is connected to the discharge pipe connection pipe, and an end portion of the tubular liquid discharge part is connected to the discharge pipe and the discharge pipe. It is characterized by being sandwiched and fixed between the pipe connecting pipes.

The method for assembling a liquid container according to the present invention is for assembling the liquid container,
Wrap or fold the liner body portion of the liner and insert the liner into the liquid container body with the tubular liquid discharge portion at the top, making the liner into a rod shape,
Passing the tubular liquid discharge part through the discharge pipe;
Widen the end of the tubular liquid discharge part, and fix it by pressing between the end of the discharge pipe and the end of the discharge pipe connecting pipe of the valve member,
It is characterized by this.

  The inner liner according to the present invention is used for the liquid container.

  ADVANTAGE OF THE INVENTION According to this invention, the container for liquids with which the contamination of the liquid stored inside was suppressed is provided. In other words, since there is no need to provide a mounting member or the like on the inner liner, foreign matter does not enter the liner, and the inner liner is contaminated without having to clean the container by replacing the inner liner each time it is used. There is nothing to do. Furthermore, since the structure of the inner liner is not complicated, the manufacturing cost is low.

The side view (A) of the container for liquid which concerns on one embodiment of this invention, and sectional drawing (B) of a liquid accommodating part and a valve member. The front view which shows the inner side liner used for the container for liquids of this invention. The schematic diagram which shows the assembly method of the container for liquids concerning one embodiment of this invention. Sectional drawing (A) of ferrule (male) which can be used for the container for liquid which concerns on one embodiment of this invention, and sectional drawing (B) of ferrule (female).

  Hereinafter, embodiments of the present invention will be described in detail.

  FIG. 1A is a side view of a liquid container 100 according to an embodiment of the present invention. Here, a liquid container 100A is fixed to the outer frame 104 of the liquid container. The liquid container 100A includes a metal liquid container body 101 and a discharge pipe 105 provided at the bottom. It is composed of An opening 102 is provided in the upper part of the liquid container main body, and an inner liner described later is introduced into the liquid container main body through the opening 102, and the inner liner is filled with liquid. The opening 102 may be opened from start to finish, but is generally sealed by the lid member 103 after liquid filling.

  The discharge pipe 105 is a hollow pipe, and in the illustrated liquid container, the discharge pipe 105 has a shape that hangs down from the bottom of the liquid container body 101 and is bent from the middle. A valve member 100B including a discharge pipe connecting pipe 109 and a valve 108 connected to the discharge pipe connecting pipe 109 is fixed to the end of the discharge pipe 105 opposite to the liquid container body by a clamp 110. In the illustrated liquid container, a ferrule (male) 106 is provided at the end of the discharge pipe 105, and a ferrule (female) that fits the ferrule 106 at the end of the discharge pipe connecting pipe 109. Are provided and these are fitted. As will be described later, it is preferable to use such a ferrule because liquid leakage can be prevented.

  FIG. 1B is a conceptual cross-sectional view of the liquid container 100A and the valve member 100B. An inner liner 200 (shown by a broken line in the figure) is inserted into the liquid storage portion 100A, and the end portion of the tubular liquid discharge portion is sandwiched and fixed between the ferrules 106 and 107. A liquid is introduced into the inner liner 200 from a liquid introduction portion, but after the introduction is completed, the liquid introduction portion is generally sealed. The method for sealing the liquid introduction part is arbitrarily selected and is not particularly limited. For example, a method for binding the liquid introduction part, a method for sealing with a heat seal, or the like, and by sandwiching the liquid introduction part between the opening 102 and the lid member 103 A sealing method is used. The liquid stored in the liquid container is taken out through the valve 108.

  In the present invention, the capacity of the liquid container is not particularly limited, and is not particularly limited because an arbitrary size can be adopted according to the type and use of the liquid to be stored or the handleability of the liquid container itself. For example, when the liquid container is transported by a truck or the like and transported by a forklift in a factory or the like, the capacity is about 10 to 1000 liters. However, it is also possible to apply to a tank such as a tank lorry as a larger liquid container. In such a case, the capacity of the liquid container according to the present invention can be set to 1000 to 10,000 liters. In particular, when used for chemicals for electronics industry, it is preferably 500 to 2000 liters.

  The liquid container according to the present invention includes an inner liner having a specific shape inside the liquid container body 101. In the liquid container according to the present invention, the liquid is filled inside the inner liner.

  The shape of the inner liner is, for example, as shown in FIG. The inner liner 200 is provided with a liner main body portion 201 for storing liquid, a tubular liquid discharge portion 202, and a liquid introduction portion 203 for introducing liquid when the liner main body is filled with liquid.

  The liner main body portion 201 has a shape and capacity corresponding to the shape and capacity of the liquid container main body 101. In the liquid container according to the present invention, the liquid is stored inside the liner main body portion 201 accommodated in the liquid container main body 101. For this reason, if the liner main body portion 201 is too small compared to the liquid container main body 101, a gap is formed between the liner main body portion 201 and the liquid container main body 101 after filling the liquid, and the liner main body portion 201 is damaged during transportation. there's a possibility that. On the other hand, if the liner main body portion 201 is too large compared to the liquid container main body 101, the liner main body portion 201 is excessively wrinkled inside the liquid container main body 101, and the internal liquid cannot be completely discharged when the liquid is discharged. There is a possibility of loss. For this reason, it is preferable that the shape of the inner liner is three-dimensional and formed so as to match the shape of the liquid container body. However, in the case of using a planar liner as described later, it is common to use a slightly larger size than the liquid main body and in close contact with the inside of the liquid container main body. In consideration of the cleanliness inside the liner and the manufacturing cost, it is preferable to use such a planar liner.

  The tubular liquid discharge portion 202 is a portion inserted inside the discharge tube 105 as will be described later. Since the end of the tubular liquid discharge portion is fixed by the ferrules 106 and 107 at the end of the discharge pipe 105, the length of the tubular liquid discharge portion 202 is generally formed longer than the length of the discharge pipe 105.

  The liquid introduction portion 203 is for filling the inside of the liner main body portion 201 with a liquid, and the shape thereof is not particularly limited. For example, as shown in FIG. 2, it may be formed in a tubular shape from the liner body portion 201 in the same manner as the tubular liquid discharge portion. When formed in this way, after introducing the liquid, it can be sealed by tying the tubular portion or sealed by heat sealing or the like. Further, the liquid introduction portion 203 can be sealed by twisting and fastening, or can be sealed by a method such as sandwiching between the opening 102 and the lid member 103. The liquid introduction part 203 is generally located at a higher part than the liquid to be filled, and the part has few opportunities to come into contact with the liquid except when it is vibrated during transportation. The cleanliness of the part is not as strictly controlled as the liquid discharge part. For this reason, it is possible to form a sealed structure such as a screw cap in the liquid introduction part, but in order to reduce the risk of contamination inside the liner and reduce the manufacturing cost, it is necessary to form such a sealed structure. The profit is small.

  Such a liner body portion 201 can be made of any material depending on the purpose. Here, since the inside of the liner is in direct contact with the liquid to be filled, it is preferable that the liner has high chemical resistance and low solubility. On the other hand, since stress may be applied to the liner main body during transportation or the like, those having high strength such as piercing resistance or impact resistance are preferable. It should be noted that the strength may not be important when the liquid container body 101 is in close contact with the inner surface of the liquid container body 101. Furthermore, the thing which does not permeate | transmit a liquid or gas is preferable.

  A film is generally used as the material of the liner body part, but it is also possible to obtain sufficient characteristics for the entire film using a multilayer film without selecting one that satisfies all the above conditions at the same time. it can. For example, a highly chemical-resistant material is used for the inner layer that comes into contact with the liquid, and a high-friction and impact-resistant material is used for the outer layer that comes into contact with the liquid container body. be able to. Moreover, the intensity | strength of a film can also be made high by making it the structure of two or more layers using the same material. In such a case, the film is not limited to a two-layer structure, and may have three or more layers. Here, the innermost layer is referred to as an inner layer, the outermost layer is referred to as an outer layer, and the intermediate layer is referred to as an intermediate layer.

  First, the inner layer that is in direct contact with the liquid is preferably made of a material having excellent chemical resistance and solubility. Moreover, it is more preferable that the low temperature sealability is excellent when the outer layer is laminated. From such a viewpoint, the material of the inner layer is preferably polyethylene, and from the viewpoint of influence on the heat seal strength and the chemical solution to be filled, linear low density polyethylene having a narrow molecular weight distribution is preferable.

  Further, the outer layer and the intermediate layer that are not in direct contact with the liquid are required to have mechanical properties such as puncture resistance and impact resistance, and gas barrier properties against nitrogen, oxygen, water vapor, solvent, and the like. In particular, there is a case where a utilization method is adopted in which a gas is introduced between the liquid container body and the inner liner and the liquid filled in the inner liner is extruded. Sex is important. Furthermore, since the outer layer is in direct contact with the liquid container body, it is preferable that the outer layer has high friction resistance. Further, when filling the liquid, the liquid may come into contact with the outer layer due to an erroneous operation or the like, and therefore it is not as high as the level required for the inner layer, but preferably has high chemical resistance.

  From this point of view, the material of the film used for the outer layer or intermediate layer is low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, and ethylene-acetic acid. It is preferable to use one or more resins selected from the group consisting of vinyl copolymers. Among these, polyethylene and further linear low density polyethylene are preferable.

  Moreover, in order to provide gas barrier properties such as oxygen, water vapor, and solvent, as a film material, a metal foil such as aluminum or copper, or a film such as polyvinyl alcohol or ethylene-vinyl alcohol copolymer, or polyester, Polyamide, polyethylene, polypropylene, nylon and the like can also be used.

  These film materials can be used as a composite film in which a plurality of films are combined according to the purpose. For example, when multiple films made of the same material are stacked to form a multiple structure, when one film breaks due to contact such as when a liner is inserted, or when there is a pinhole due to a defect in the film itself In addition, liquid leakage can be prevented because the film has a multiple structure. Moreover, it can be set as the composite film which combines the characteristic of each film, combining the film which consists of a different material. Here, the entire surface of the composite film does not need to be bonded, and for example, only the end portion or the like may be bonded. In the case of bonding a plurality of films, an adhesive or the like can be used, but a method of bonding by heat sealing is preferable. When heat sealing is used, it is preferable because the composite film and the liner can be formed at the same time when the liner is formed as described later.

  When the composite film is a laminate of films made of the same material, it is easy to heat seal them. However, when the composite films are made of films made of different materials and their contact surfaces are made of different materials, heat sealing may be difficult as they are. For example, when trying to use a composite film made of a polyethylene film and a nylon film, these cannot be easily heat-sealed. In such a case, it is preferable to provide a welding layer made of a material that can be easily heat-sealed with the other film on the contact surface of one film. For example, when a composite film composed of a polyethylene film and a nylon film is used, heat sealing can be facilitated by forming a polyethylene layer on one surface of the nylon film. Such a weld layer can be formed by coextrusion, for example, when forming a film. An adhesive layer for preventing peeling between the film main body and the welded layer can be provided during the coextrusion.

  The composite film may be a multilayer film formed by coextrusion or the like. For example, a multilayer material in which the surface of a film having a high mechanical strength is coated with a layer made of a material having excellent chemical resistance and gas barrier properties can be used.

  The inner liner 200 is formed using the material as described above, but the forming method is not particularly limited. For example, as shown in FIG. 2 (B), the tubular film is crushed flat, L-shaped heat seal portions 204 are provided at the four corners, and the portions are welded to the surplus. By removing the portion 205, it can be produced as a planar liner. Moreover, a sheet-like film is cut into a shape as shown in FIG. 2 (A), a plurality of cut films are overlapped, and a peripheral part is adhered by heat sealing or an adhesive to form a planar liner. It can also be manufactured. Here, the tubular film or sheet-like film may be a single film, or may be a laminate of a plurality of films. As described above, when a plurality of heat sealable films are stacked and heat sealed to form a liner, the film is also heat sealed to form the liner from a composite film. can do. In addition, it is more preferable to manufacture an inner liner using a tubular tube, because the number of parts to be welded or adhered is smaller than that in the case of using a sheet-like film. When the inner liner 200 is assembled to the liquid container, the end portion of the tubular liquid discharge portion 202 needs to be opened, and when the liner main body portion 201 is filled with the liquid, the liquid introduction portion 203 needs to be opened. . However, these need only be opened at the time of introducing the liquid, and do not need to be opened when the liner main body portion 201 is formed and when it is installed inside the liquid container main body. Rather, when the liquid is closed before the liquid is introduced, foreign matter can be prevented from entering the inside, and the internal cleanliness can be maintained. In this case, it is opened by cutting or the like when necessary.

  The inner liner 200 formed in this way is installed in the liquid container main body 101 before using the liquid container. The installation procedure will be described below with reference to the drawings.

  First, before introducing the inner liner 200 into the liquid container main body 101, it is preferable that the liner main body portion 201 is wound or folded into a thin rod shape (FIGS. 3A and 3B). In general, the opening 102 at the top of the liquid container body 101 has a small opening area, so that the inner liner 200 can be easily inserted. Then, the inner liner 200 is inserted into the liquid container main body with the tubular liquid discharge portion 202 at the top, and the tubular liquid discharge portion 202 is further inserted into the discharge pipe 105 provided at the lower portion of the liquid container main body 101 to form a tubular shape. The tip of the liquid discharge part 202 is pulled out from the end of the discharge pipe 105 (FIG. 3C). As a result, the tubular liquid discharge part 202 penetrates the discharge pipe 105.

  When the tip of the tubular liquid discharge part 202 is sealed, it is pulled out from the discharge pipe 105 and then cut into a cylindrical shape. The distal end of the tubular liquid discharge portion formed into a tubular shape is widened and folded back so as to cover the ferrule (male) 106 provided at the end of the discharge pipe 105 (FIG. 3D).

  Next, the valve member 100B is attached. Crimping is performed so that the folded end of the tubular liquid discharge portion 202 is sandwiched. In addition, if there is a wrinkle at the folded end, a gap is reported in the crimping part and causes liquid leakage, so that the opening diameter of the tubular liquid discharge part 202 and the opening diameter of the discharge pipe 105 are approximately the same. Is preferred. When the ferrule is provided in the discharge pipe and the discharge pipe connecting pipe, the ferrule (male) 106 and the ferrule (female) 107 are fitted (FIG. 3E). Further, the valve member 100B is fixed to the discharge pipe 105 using a clamp 110 or the like (FIG. 3F). With such a configuration, a part of the liner, that is, the end of the tubular liquid discharge portion functions as a packing, and liquid leakage is prevented.

  Thus, in the liquid container to which the inner liner 200 is attached, the inside of the liquid container main body 101 is covered with the liner main body portion 201, and the inside of the discharge pipe 105 is covered with the tubular liquid discharge portion 202. The liquid filled in the liquid does not directly contact the inside of the liquid container main body 101 or the discharge pipe 105. For this reason, when the liquid container according to the present invention is used, it is not necessary to clean the inside of the liquid container 100A, specifically, the inside of the liquid container body 101 and the discharge pipe 105, by replacing the inner liner 200 each time it is used. In addition, the liquid filled inside does not come into contact with the container or the like to be contaminated.

  To facilitate attachment of the inner liner 200, a weight can be attached to the tip of the tubular liquid discharge portion 202. That is, since the material of the inner liner 200 has a relatively low specific gravity, it may be difficult to guide the distal end of the tubular liquid discharge portion 202 to the discharge tube 105 at the bottom inside the liquid container body 101 having a narrow opening 102. is there. Therefore, by attaching a weight to the tip of the tubular liquid discharge portion 202, the tip can be easily guided to the discharge pipe 105 by gravity. At this time, if the bottom of the liquid container body is formed in a weight shape, the operation is further facilitated.

  Moreover, it can replace with a weight and a ferromagnetic body can also be attached to a tubular liquid discharge part. By doing so, it is possible to insert a magnet from the end of the discharge pipe, draw the tip of the tubular liquid discharge portion 202 by the magnet, and pull out from the discharge pipe 105.

  Further, the ferrule (male) 106 and the ferrule (female) 107 that connect the end of the discharge pipe 105 and the valve member 100B can be arbitrarily selected according to the purpose. Further, the ferrule (male) and the ferrule (female) may be attached in reverse. Furthermore, although depending on the clamp 110 used for coupling, the contact surface may be flat instead of a ferrule provided with a so-called peak portion. In the present invention, even a member having such a flat contact surface is referred to as a “ferrule” for convenience.

  However, if the adhesion between the discharge pipe 105 and the valve member 100B is not sufficient, the liquid filled inside may leak out. In general, an O-ring is often incorporated in the joint portion of the pipe for liquid leakage. However, in the present invention, such an O-ring is not necessary due to the inner liner and the ferrule sandwiched between the coupling portions, and replacement thereof is possible. It is possible to omit the trouble. In order to achieve such an object, the ferrule preferably has a special shape in the present invention. Specifically, in the present invention, the ferrule preferably has the following shape.

  The ferrule preferable for use in the present invention preferably has a circular peak portion or valley portion along the opening, and in particular, in view of the effect of preventing liquid leakage, each of them is preferably double. . Sectional views of one embodiment of such a ferrule are shown in FIGS. 4 (A) and 4 (B). The crest or trough can be triple or more. However, the structure is complicated and the manufacturing cost of the ferrule increases, but the liquid leakage prevention effect is not dramatically improved. It is advantageous from the viewpoint of cost performance.

  In the ferrule (male), in order to improve the liquid leakage prevention effect, it is preferable that the inner peak 401 is higher than the outer peak 402. However, the inner peak 401 and the outer peak 402 are at the same height. You can also

Further, the angle θ ₁ of the cross section of the apex of the inner peak 401 and the outer peak 402 is generally 50 to 60 °, and the angle θ ₂ of the cross section between the ridge line of the inner peak 401 and the ridge line of the outer peak 402 is also generally set. It is set to 50-60 degrees. Usually, θ ₁ and θ ₂ are often the same, but can be different angles. For example, theta ₁ and 60 °, θ ₂ and may be a 55 °.

  In addition, the shape of the ferrule (female) is appropriately determined according to the shape of the ferrule (male) fitted thereto. For example, the angle of the inner valley 403 and the outer valley 404 of the ferrule (female) is the angle of the peak of the peak of the ferrule (male), and the diameter of the valley of the ferrule (female) is the corresponding peak of the ferrule (male) Generally, the diameters of the vertices are the same. Note that the depth of the valley portion of the ferrule (female) is preferably shallower than the height of the peak portion of the ferrule (male), for example, by about 0.5 mm, depending on the thickness of the film to be sandwiched. By setting it as such a shape, the liquid leakage prevention effect becomes higher.

  Although the material which comprises a ferrule is not specifically limited, For example, metals, such as aluminum, stainless steel, or iron, or resin with some hardness, such as Teflon (trade name) and polyethylene, can be used.

Example 1
Two tubular films consisting of 80 μm additive-free low density polyethylene film were prepared. Using these two tubular films, an inner liner was prepared. Specifically, the other film is inserted into the inside of one tubular film to make it double, and after heat-sealing as shown in FIG. 2 (B), the openings at both ends are also heat-sealed. It was sealed and the excess part was excised, and the inner liner whose size of the main body part made of the double film was about 2 m × 3 m was produced. The sealed opening was used after the seal portion was cut and opened just before use.

Example 2
A two-layer tubular film having a thickness of 80 μm and a nylon film provided with a weld layer made of polyethylene and a tubular film made of an additive-free low density polyethylene film having a thickness of 80 μm were prepared. Using these two tubular films, an inner liner was prepared in the same manner as in Example 1. At this time, the nylon film was the outside, and the welded layer of the nylon film was in contact with the polyethylene film. In this inner liner, the outer nylon film functions as a gas barrier layer.

The liner prepared for evaluation was installed in the container according to the above procedure, and then the inside of the liner was blown with clean air to inflate the inner liner. This inner liner was filled with a filtered photoresist composition (AZ SR-300 (trade name), manufactured by AZ Electronic Materials, viscosity 3 cp), and allowed to stand at room temperature (about 25 ° C.) for 1 hour. After standing, a photoresist composition was collected from the valve 108 and the number of fine particles was measured. Fine particles having a particle size exceeding 0.23 μm, 0.3 μm, 0.5 μm, and 1.0 μm were measured. This measurement was repeated three times while changing the inner liner. The obtained results were as shown in Table 1. As a comparative example, the number of fine particles after filling the same photoresist composition using a conventionally used liquid chemical container (Patent Document 4) and allowing to stand at room temperature (about 25 ° C.) for 1 hour is used. It was measured. Although the container used for this comparative example has an inner liner, it has a member for connecting a connecting member to the opening when filling or discharging liquid.

  As is apparent from the results, the liquid container according to the present invention has a more stable supply of chemical liquids than the conventionally used liquid chemical containers because the increase in fine particles due to contamination inside the containers is suppressed. You can see that you can.

DESCRIPTION OF SYMBOLS 100 Container for liquids 100A Liquid storage part 101 Liquid container main body 102 Opening part 103 Cover member 104 Outer frame for liquid containers 105 Drain pipe 106, 107 Ferrule 108 Valve 100B Valve member 109 Drain pipe connecting pipe 110 Clamp 200 Inner liner 201 Liner main body part 202 Tubular liquid discharge portion 203 Liquid introduction portion 401, 402 Mountain portion 403, 404 Valley portion

Claims (6)

A liquid container comprising a liquid container body and a discharge pipe provided at a lower portion of the liquid container body;
A valve member comprising a discharge pipe connecting pipe and a valve;
A container for liquid comprising an inner liner capable of storing liquid therein,
The inner liner is formed by welding a part of a tubular film and removing an excess part, and comprises a liner main body part and a tubular liquid discharge part,
Ferrules that are fitted to each other are provided at an end portion of the discharge pipe and an end portion of the discharge pipe connection pipe, and the peak portion or the valley portion of the ferrule is double or more,
Said tubular liquid discharge portion through the interior of the discharge tube, the inside of the tubular liquid discharge portion is arranged to couple with the discharge pipe connecting pipe, an end portion of the tubular liquid discharge portion is sandwiched between the ferrule Liquid container characterized by being fixed.   The liquid container according to claim 1, wherein the inner liner is formed of low density polyethylene. A method for assembling a liquid container according to claim 1 or 2 ,
Wrap or fold the liner body portion of the liner and insert the liner into the liquid container body with the tubular liquid discharge portion at the top, making the liner into a rod shape,
Passing the tubular liquid discharge part through the discharge pipe;
Widen the end of the tubular liquid discharge part, and fix it by pressing between the end of the discharge pipe and the end of the discharge pipe connecting pipe of the valve member,
A method for assembling a liquid container. The method according to claim 3 , wherein a weight is attached to a tip of the tubular liquid discharge part, and the tubular liquid discharge part is penetrated through the discharge pipe by using gravity. Wherein the distal end of the tubular liquid discharge portion fitted with ferromagnetic inserts the magnet from the end of the discharge pipe, attract the ferromagnetic pass through the tubular liquid discharge portion to the discharge pipe, according to claim 3 the method of. Inner liner, characterized in that used in the liquid container according to claim 1 or 2.

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