KR101919303B1 - Container for liquid and method of manufacturing the same - Google Patents

Abstract

[assignment]
Provided is a liquid container for suppressing contamination of liquid inside and an assembling method thereof
[Solution]
A liquid container comprising: a liquid container main body; a liquid containing portion including a discharge pipe provided at a lower portion of the liquid container main body;
A valve member composed of a discharge pipe connecting pipe and a valve,
Inner liner that can store liquid inside
And the liquid container.
The inner liner has a shape having a liner body portion and a tubular liquid discharge portion. The tubular liquid discharge portion is disposed so as to pass through the discharge tube and the inner side of the tubular liquid discharge portion is connected to the discharge tube connecting tube, and the end of the tubular liquid discharge portion is connected to the discharge tube connecting tube And is fixed therebetween.

Description

Technical Field [0001] The present invention relates to a container for a liquid and a method for assembling the container.

TECHNICAL FIELD The present invention relates to a liquid container used for storing or transporting liquid foods or medicines, in particular, liquids such as medicines for electronic engineering, a liner used in the container, and a method for inserting the liner into the container body.

Conventionally, in order to store or transport liquid such as liquid foods or medicines, containers made of metal or plastic have been generally used. Since this type of container is expensive, it can not be used once, and is generally used repeatedly by washing. However, such a container often has a valve structure for taking out the liquid filled therein, and the cleaning of that portion is considerably troublesome. Further, in the case of storing or transporting medicines for electronic industrial use by using such containers, since it is necessary to manage the residual dust in the container after cleaning in repeated use of containers, a considerable labor force is required.

In order to solve such a problem, recently, an inner liner made of a synthetic resin film or the like is used in combination with a rigid outer frame container, and the inner liner is exchanged every time the inner liner is used, thereby omitting or simplifying cleaning, (See Patent Documents 1 and 2).

The liner for a container for a liquid disclosed in Patent Document 1 or 2 is equipped with an inlet for filling the liquid and an outlet for discharging the filled liquid. The inlet member may be referred to as a spout. The spout is intended to connect the liner to the container bottom or to the valve mounting outlet provided by the container, and the liquid filled in the liner is discharged to the outside via the spout and drain.

For this reason, it is necessary for the liner for containers for liquids to have a spout installed before filling the liquid. When attaching the spout to the liner, it is necessary to insert the spout by, for example, inserting a jig into the liner and punching 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 liner for a container for a liquid disclosed in Patent Document 1 or 2 covers the main body portion of the container for liquid, the filled liquid does not contact the container 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 if sufficient cleaning is not carried out, contamination or residual dust in the discharge pipe becomes a problem.

Methods for solving such problems have also been proposed. That is, Patent Document 3 discloses an inner bag for a container for a container having a structure in which liquid does not come into direct contact with not only the container main body but also the discharge pipe. However, since the container for a container container is complicated in structure, the manufacturing cost is high, and since it is necessary to attach a component such as a mounting cylinder to the main body of the inner bag, the problem of contamination of the inside of the inner bag can not be solved.

Japanese Patent Application Laid-Open No. 8-337288 Japanese Patent Application Laid-Open No. 2004-244104 Japanese Patent Application Laid-Open No. 2007-302273 Japanese Patent Publication No. 3464232

The present invention is intended to provide a liquid container in which the liquid stored in the liquid container does not directly contact the inside of the container body but also the inside of the discharge tube, and the stored liquid is not contaminated by foreign matter or the like, and a method for assembling such a liquid container .

In the liquid container according to the present invention,

A liquid container comprising: a liquid container main body; a liquid containing portion including a discharge pipe provided at a lower portion of the liquid container main body;

A valve member composed of a discharge pipe connecting pipe and a valve,

Inner liner that can store liquid inside

And,

Wherein the inner liner comprises a liner body portion and a tubular liquid discharge portion,

Wherein the tubular liquid discharge portion passes through the discharge tube and the inner side of the tubular liquid discharge portion is arranged to be connected to the discharge tube connection tube and the end portion of the tubular liquid discharge portion is connected to the discharge tube connection tube And is interposed between and fixed.

Further, the method for assembling the liquid container according to the present invention is for assembling the liquid container,

The liner body portion of the liner is wound or folded to insert the liner into the liquid body main body with the tubular liquid discharge portion as a head,

The tubular liquid discharge portion is passed through the discharge pipe,

And the end of the tubular liquid discharge portion is widened so as to be interposed between the end portion of the discharge pipe and the end portion of the discharge pipe connecting tube of the valve member to be fixed.

Further, the inner liner according to the present invention is characterized by being used in the liquid container.

According to the present invention, there is provided a container for a liquid in which contamination of liquid stored therein is suppressed. That is, since it is not necessary to provide a mounting member or the like to the inner liner, foreign matter is not mixed in the liner, and the inner liner is exchanged every time the liner is used. Also, since the inner liner structure is not complicated, the manufacturing cost is also low.

FIG. 1A is a side view of a container for a liquid according to an embodiment of the present invention, and FIG. 1B is a sectional view of a liquid container and a valve member. FIG.
2A and 2B are front views showing an inner liner used in the container for a liquid of the present invention.
3A to 3F are schematic diagrams showing a method for assembling a container for a liquid according to an embodiment of the present invention.
4A is a cross-sectional view of a ferrule (male) usable in a container for a liquid according to an embodiment of the present invention, and Fig. 4B is a cross-sectional view of a ferrule (female).

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

1A is a side view of a liquid container 100 according to an embodiment of the present invention. Here, the liquid container 100A is fixed to the outer frame 104 of the container for liquid. The liquid container 100A includes a liquid container body 101 made of metal and a discharge pipe (not shown) 105). An opening 102 is provided in the upper portion of the liquid container main body. An inner liner described later is introduced into the liquid container main body from the opening 102, and the liquid is filled into the inner liner. The opening 102 may be opened at all times, but is generally sealed by the lid member 103 after filling with liquid.

The discharge pipe 105 is made of a hollow pipe. In the illustrated liquid container, the discharge pipe 105 is shaped to bend downward from the bottom of the liquid container main body 101. A valve member 100B composed of a discharge pipe coupling pipe 109 and a valve 108 connected to the discharge pipe coupling pipe 109 is fixed to the end of the discharge pipe 105 opposite to the liquid container main body by a clamp 110. In the illustrated liquid container, a ferrule (water) 106 is provided at the end of the discharge pipe 105, and a ferrule (female) for fitting the ferrule 106 at the end of the discharge pipe coupling pipe 109 And they are fitted. As described later, it is preferable to use such a ferrule because it is possible to prevent liquid leakage.

1B is a conceptual cross-sectional view of the liquid containing portion 100A and the valve member 100B. An inner liner 200 (indicated by a broken line in the figure) is inserted into the liquid containing portion 100A and an end portion of the tubular liquid ejecting portion is interposed between the ferrules 106 and 107 and fixed. A liquid is introduced into the inner liner 200 from the liquid introduction portion, but after the introduction is completed, the liquid introduction portion is generally sealed. The method of sealing the liquid introduction portion is arbitrarily selected and is not particularly limited. For example, a method of laminating the liquid introduction portion, a method of sealing by a heat seal, a method of fitting the liquid introduction portion by the opening portion 102 and the lid member 103 A sealing method is used. The liquid stored in this liquid container is taken out to the outside via the valve 108.

In the present invention, the capacity of the liquid container is not particularly limited and is not particularly limited as it can employ an arbitrary size depending on the type and use of the liquid to be stored or the handling property of the liquid container itself. For example, when the liquid container is transported by a truck or the like and transported to 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 larger liquid container, for example, a tank such as a tanker car. In such a case, the capacity of the liquid container according to the present invention may be set to 1000 to 10000 liters. And particularly preferably 500 to 2000 liters when used for pharmaceuticals for the electronics industry.

The liquid container according to the present invention is provided with an inner liner having a specific shape inside the liquid container main body (101). In the liquid container according to the present invention, the liquid is filled in 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 body portion 201 for storing a liquid, a tubular liquid discharge portion 202 and a liquid introduction portion 203 for introducing liquid when the liquid is filled in the liner body have.

The liner main body portion 201 has a shape and a capacity according to the shape and the capacity of the liquid container main body 101. In the container for a liquid according to the present invention, the liquid is stored inside the liner body portion 201 accommodated in the liquid container main body 101. Therefore, if the liner main body portion 201 is too small as compared with the liquid container main body 101, there is a gap between the liner main body portion 201 and the liquid container main body 101 after the liquid is filled, There is a possibility that the body portion 201 is broken. On the other hand, if the liner main body portion 201 is too large as compared with the liquid container main body 101, excessive wrinkles are generated in the liner main body portion 201 inside the liquid container main body 101, There is a possibility that loss may occur. Therefore, it is preferable that the shape of the inner liner is three-dimensionally formed so as to conform to the shape of the liquid container main body. However, in the case of using a plane liner to be described later, it is general that a slightly larger size than that of the liquid container main body is used in close contact with the inside of the liquid container main body. It is desirable to use such a planar liner in view of the cleanliness and manufacturing cost of the interior of the liner.

The tubular liquid discharging portion 202 is a portion inserted into the discharge tube 105 as described later. The length of the tubular liquid discharge portion 202 is generally longer than the length of the discharge tube 105 since the end of the tubular liquid discharge portion is fixed by the ferrules 106 and 107 at the end of the discharge tube 105 .

The liquid introduction portion 203 is for filling a liquid inside the liner body portion 201, and its shape is not particularly limited. For example, as shown in Fig. 2, it may be formed into a tubular shape from the liner body portion 201 in the same manner as the tubular liquid discharge portion. In such a case, after the liquid is introduced, the tubular portion may be sealed by tying or the like, or may be sealed by a heat seal or the like. It is also possible to seal the liquid introducing portion 203 by means of a method such as twisting and sealing with a fixture, or sandwiching it between the opening portion 102 and the lid member 103. Further, since the liquid introducing portion 203 is located at a higher position than the liquid to be filled in general, and there is little chance that the portion comes into contact with the liquid unless vibration is applied to the liquid at the time of transportation, No strict restrictions are required as to the discharge portion. Therefore, a sealing structure such as a screw cap can be formed in the liquid introduction portion. However, in order to reduce the risk of contamination inside the liner and lower the manufacturing cost, there is little benefit in forming such a sealing structure.

The liner main body portion 201 can be made of any material according to the purpose. Here, since the inside of the liner is in direct contact with the liquid to be filled, it is preferable that the chemical resistance to the liquid is high and the solubility is low. On the other hand, there is a case where stress is applied to the liner body at the time of transportation, and therefore, it is preferable that the liner body has high strength such as resistance to piercing resistance or impact resistance. In addition, in the case of being in close contact with the inner surface of the liquid container main body 101, the strength may not be critical. Further, it is preferable not to transmit the liquid or the gas.

As the material of the liner body portion, a film is generally used, but a film having a multilayer structure can be used without satisfying all the above conditions, and sufficient characteristics can be obtained throughout the film. For example, a film having a high chemical resistance can be used for the inner layer in contact with the liquid and a material having high friction resistance and high impact resistance can be used for the outer layer in contact with the liquid container main body and laminated with a laminate or the like have. Further, by making the structure of two or more layers using the same material, the strength of the film can be increased. In this case, the film is not limited to a two-layer structure, and may be three or more layers. Here, the innermost layer is referred to as the inner layer, the outermost layer is referred to as the outer layer, and the middle layer therebetween is referred to as the middle layer.

First, as the inner layer directly contacting the liquid, it is preferable to use a material excellent in chemical resistance and solubility. In addition, it is more preferable to have a low-temperature sealability when laminated with the outer layer. From this point of view, polyethylene is preferable as the material of the inner layer, and linear low density polyethylene having a narrow molecular weight distribution is preferable from the viewpoints of the heat seal strength and the effect on the filling liquid to be filled.

Further, the outer layer or the intermediate layer which is not in direct contact with the liquid is required to have gas barrier properties against nitrogen, oxygen, water vapor, or solvent, such as mechanical properties such as resistance to breakage and impact resistance. Particularly, there is a case where a gas is introduced between the liquid container main body and the inner liner and the liquid filled in the inner liner is extruded. In this case, gas barrier properties are particularly important. Further, since the outer layer directly contacts the liquid container main body, it is preferable that the outer layer has high abrasion resistance. Further, at the time of filling the liquid, since the liquid can come into contact with the outer layer due to erroneous operation or the like, it is not as high as the level required for the inner layer, but it is preferable that the chemical resistance is high.

From this point of view, the material of the film used for the outer layer or the intermediate layer is preferably a low density polyethylene, a medium density polyethylene, a high density polyethylene, a linear low density polyethylene, a polypropylene, an ethylene-propylene copolymer, Is preferably used as the resin. Of these, polyethylene is preferable, and a cross-linked low-density polyethylene is more preferable.

In order to impart gas barrier properties such as oxygen, water vapor and solvent, a film of a metal foil such as aluminum or copper or a film of polyvinyl alcohol, ethylene-vinyl alcohol copolymer or the like, , Polyethylene, polypropylene, nylon, or the like.

These film materials can be used as a composite film in which a plurality of films are combined according to purposes. For example, when a plurality of films made of the same material are laminated so as to have a multiple structure, even when one of the films is broken due to contact or the like at the time of inserting the liner or the like due to defects of the film itself, By having a multilayer structure of the film, leakage of the liquid can be prevented. Further, a film made of different materials may be combined to form a composite film having the characteristics of each film. Here, the composite film is not necessarily bonded to the entire surface of the film, and may be bonded to only the end portion, for example. When bonding a plurality of films, an adhesive or the like may be used, but a method of bonding by means of a heat seal is preferable. When a heat seal is used, bonding of the composite film and formation of the liner can be performed at the same time when the liner is formed as described later.

When the composite film is a film of the same material superposed thereon, it is easy to heat-seal them. However, in the case where the composite film is formed by superposition of films made of different materials and the contact surfaces thereof are made of different materials, the heat seal may be difficult as it is. For example, when a composite film composed of a polyethylene film and a nylon film is used, they can not be easily heat-sealed. In such a case, it is preferable to provide a welded layer made of a material that facilitates the other film and heat seal on the contact surface of one of the films. For example, in the case of using a composite film comprising a polyethylene film and a nylon film, by forming a polyethylene layer on one side of the nylon film, it is possible to make the heat seal easy. Such a deposition layer can be formed by, for example, coextrusion when forming a film. An adhesive layer for preventing peeling of the film body and the deposition layer may be provided during co-extrusion.

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

The inner liner 200 is formed using the above-described materials, and the forming method is not particularly limited. For example, as shown in Fig. 2B, the tubular film is squashed flat, and L-shaped heat seal portions 204 are provided at the four corners of the corrugated film, and the surplus portions 205 are removed , Whereby it can be produced as a planar liner. Further, the sheet-like film may be cut in a shape as shown in Fig. 2A, and a plurality of cut films may be superimposed on each other and bonded to a peripheral portion by a heat seal or an adhesive. Here, the tubular film or sheet-like film may be a single film, or a plurality of films may be laminated. As described above, when a plurality of heat sealable films are stacked and used to heat seal each other to form a liner, the liner can be formed as a composite film by heat-sealing the films. Further, the inner liner is manufactured using a tubular tube because the portion to be welded or adhered is smaller than that in the case of using the sheet-like film, so that the cleanliness can be maintained at a high level. When the inner liner 200 is mounted on the liquid container, the distal end portion of the tubular liquid discharge portion 202 is opened when the liquid is filled in the liner body portion 201, There is a need. However, these need only be opened at the time of liquid introduction, and they need not be opened when the liner main body portion 201 is formed and when it is installed inside the liquid container main body. On the contrary, before the introduction of the liquid, the closed part prevents the foreign matter from intruding into the inside, thereby maintaining the cleanliness of the inside. In this case, it is opened by cutting or the like when necessary.

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

It is preferable that the inner liner 200 is formed into a thin rod shape by winding or folding the liner body portion 201 before introducing the inner liner 200 into the liquid container main body 101 (Figs. 3A and 3B). In general, the opening 102 in the upper part of the liquid container body 101 has a small opening area so that the inner liner 200 can be easily inserted. The inner liner 200 is inserted into the liquid container main body with the tubular liquid discharging portion 202 as the head and the tubular liquid discharging portion 202 is inserted into the discharge tube 105 provided at the lower portion of the liquid container main body 101, And the distal end portion of the tubular liquid discharge portion 202 is pulled out from the end of the discharge tube 105 (Fig. 3C). As a result, the tubular liquid discharge portion 202 passes through the discharge pipe 105.

When the tip end of the tubular liquid discharge portion 202 is sealed, it is cut off after being drawn out from the discharge tube 105, and becomes a tubular shape. The tip end of the tube-shaped tubular liquid discharge portion is expanded and folded so as to cover the ferrule (water) 106 provided at the end of the discharge tube 105 (FIG. 3D).

Next, the valve member 100B is mounted. The tubular liquid discharging portion 202 is folded in such a manner that the folded end portion is sandwiched. If there is a wrinkle on the folded end portion, a gap is created in the pressed portion, which causes liquid leakage. Therefore, it is preferable that the opening diameter of the tubular liquid discharge portion 202 and the opening diameter of the discharge pipe 105 are the same diameter. When the ferrule is provided in the discharge pipe and the discharge pipe, the ferrule (water) 106 and the ferrule (female) 107 are fitted (FIG. 3E). Further, the valve member 100B is fixed to the discharge pipe 105 by using the clamp 110 or the like (Fig. 3F). With this configuration, a part of the liner, that is, the end of the tubular liquid discharge portion functions as a packing, thereby preventing liquid leakage.

The interior of the liquid container main body 101 is covered by the liner 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 inner liner does not directly contact the inside of the liquid container main body 101 or the discharge pipe 105. [ Therefore, by using the liquid container according to the present invention, the inside liner 200 can be exchanged every time the liquid container 100A is used, and the inside of the liquid container 100A, specifically, the inside of the liquid container main body 101 and the discharge pipe 105 Cleaning does not become necessary, and the liquid filled in the container does not come into contact with the container or the like and is not contaminated.

In order to facilitate mounting of the inner liner 200, a weight may be provided at the tip of the tubular liquid discharge portion 202. Since the material of the inner liner 200 has a relatively small specific gravity, the inside of the narrow liquid container body 101 having the narrow openings 102 is connected to the end of the tubular liquid discharge portion 202 In some cases. Therefore, by providing a weight at the tip of the tubular liquid discharge portion 202, the tip can be easily guided to the discharge tube 105 by gravity. At this time, if the bottom portion of the liquid container main body is formed as an abstract, the operation becomes easier.

Further, instead of the weight, the ferromagnetic body may be mounted on the tubular liquid discharge portion. By doing so, it becomes possible to insert a magnet from the end of the discharge pipe, pull the tip of the tubular liquid discharge portion 202 with the magnet, and pull it out from the discharge pipe 105.

The ferrule (water) 106 and the ferrule (arm) 107 for connecting the end of the discharge pipe 105 and the valve member 100B can be arbitrarily selected depending on the purpose. Further, the ferrule (water) and the ferrule (arm) may be provided in the opposite manner. In addition, although it depends on the clamp 110 used for bonding, it is not limited to a ferrule provided with a so-called mountain portion, but may be a flat contact angle. In the present invention, even a member having such a flat contact surface is also referred to as " ferrule " for convenience.

However, if the adhesion between the discharge pipe 105 and the valve member 101B is not sufficient, there is a possibility that the liquid filled in the discharge pipe 105 leaks. In general, the O-ring is often inserted into the joint portion of the pipe due to the leakage of the liquid. In the present invention, such an O-ring is not required by the inner liner and the ferrule fitted in the joint portion, . In order to achieve this object, it is preferable in the present invention that the shape of the ferrule is special. 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 mountain portion or a valley portion along the opening portion, and in particular, from the viewpoint of the effect of preventing liquid leakage, each of the ferrules is preferably double . Cross sections of one embodiment of such a ferrule are shown in Figures 4A and 4B. It is also possible to make the acid portion or the valley portion three or more, but since the structure becomes plural and the manufacturing cost of the ferrule is increased, the effect of preventing the leakage of liquid is not dramatically improved, so it is advantageous from the viewpoint of price- .

In order to improve the effect of preventing liquid exposure in the ferrule (water), it is preferable to set the inner crest section 401 higher than the outer crest section 402, but the inner crest section 401 and the outer crest section 402 have the same height .

The angle? ₁ of the cross section of the apexes of the medial section 401 and the medial section 402 is generally 50 to 60 degrees and the angle between the ridge of the medial section 401 and the ridge of the medial section 402 The angle? ₂ of the cross-section between the _two ends is generally 50 to 60 degrees. Usually, θ ₁ and θ ₂ are often the same, but they may be different. For example, θ ₁ may be set to 60 °, and θ ₂ may be set to 55 °.

Further, the shape of the ferrule (arm) is appropriately determined in accordance with the shape of the ferrule (water) fitted to the ferrule (female). For example, the angle of the inner curvature portion 403 and the outer valley portion 404 of the ferrule (arm) is determined by the angle of the apex of the ferrule (water), the diameter of the valley of the ferrule (female) And the diameter of the apex of the mountain portion, respectively. Further, it is preferable that the depth of the valley portion of the ferrule (female) is shallower than the height of the peak portion of the ferrule (water), for example, about 0.5 mm in accordance with the thickness of the interposed film. By adopting such a shape, the effect of preventing liquid leakage is further enhanced.

The material constituting the ferrule is not particularly limited. For example, a metal such as aluminum, stainless steel, or iron, or a resin having a certain degree of hardness such as Teflon (trade name) or polyethylene may be used.

Example 1

Two tubular films made of a low-density polyethylene film of no added 80 占 퐉 were prepared. Using these two tubular films, an inner liner was produced. Specifically, after the other film is inserted into one tubular film to make it double, and heat sealing is performed as shown in Fig. 2B, the openings at both ends are also sealed by heat sealing And the surplus portion was cut off to produce an inner liner having a body portion size of about 2 m x 3 m made of a double film. In addition, the sealed portion was used after cutting the seal portion just before use and opening it.

Example  2

A tubular film having a thickness of 80 占 퐉 and comprising a two-layer tubular film provided with a deposition layer made of polyethylene on the surface of a nylon film and a non-addition low-density polyethylene film with a thickness of 80 占 퐉 was prepared. Using these two tubular films, an inner liner was formed in the same manner as in Example 1. [ At this time, the nylon film was placed outside and the nylon film deposition layer was brought into contact with the polyethylene film. In this inner liner, the outer nylon film functions as a gas barrier layer.

evaluation

The prepared liner was placed in the container in the above order, and then the inside of the liner was blown with clean air to inflate the inside liner. The photoresist composition (AZ SR-300 (trade name), manufactured by AZ Electronic Materials Co., Ltd., viscosity 3 cp) filtered through the inner liner was filled and allowed to stand at room temperature (about 25 캜) for one hour. After standing, the photoresist composition was collected from the valve 108 and the number of fine particles was measured. The fine particles were measured for particle sizes exceeding 0.23 mu m, 0.3 mu m, 0.5 mu m, and 1.0 mu m, respectively. This measurement was repeated three times while replacing the inner liner. The results obtained are shown in Table 1. As a comparative example, the same photoresist composition was filled in a conventional container for liquid medicine (Patent Document 4), and the number of fine particles after standing at room temperature (about 25 캜) for 1 hour was measured. The container used in this comparative example has an inner liner, and the opening has a member for engaging the connecting member when the liquid is filled or discharged.

As is evident from the results, the liquid container according to the present invention is capable of supplying the chemical liquid with a stable quality because the increase in the amount of the fine particles due to the contamination inside the container is suppressed, as compared with the conventionally used liquid chemical container .

100: container for liquids
100A: liquid receiving portion
101: liquid container body
102: opening
103: lid member
104: container for liquid containers outer frame
105: discharge pipe
106, 107: ferrule
108: Valve
100B: valve member
109: outlet pipe connector
110: Clamp
200: Inner liner
201: liner body portion
202: tubular liquid discharge portion
203: liquid introduction part
401, 402:
403, 404:

Claims (8)

A liquid container comprising: a liquid container main body; a liquid containing portion including a discharge pipe provided at a lower portion of the liquid container main body;
A valve member composed of a discharge pipe connecting pipe and a valve,
Inner liner that can store liquid inside
And a liquid container,
Wherein the inner liner is formed by depositing a portion of the tubular film and removing the excess portion, the liner body portion and the tubular liquid discharge portion,
Wherein a ferrule mutually coupled at an end of the discharge pipe and at an end of the discharge pipe connecting tube is provided and each of the mountain portion or the valley portion of the ferrule is two or more,
Characterized in that the tubular liquid discharge portion passes through the discharge pipe and the inner side of the tubular liquid discharge portion is arranged to be connected to the discharge pipe connecting pipe and the end of the tubular liquid discharge portion is interposed between and fixed to the ferrules Wherein the container is a container for a liquid. The container for a liquid according to claim 1, wherein the inner liner is formed of low density polyethylene. A method of assembling a container for a liquid according to any one of claims 1 to 3,
The liner body portion of the liner is wound or folded so that the liner is inserted into the liquid container body with the tubular liquid discharge portion as a head,
The tubular liquid discharge portion is passed through the discharge pipe,
Wherein the end portion of the tubular liquid discharge portion is widened so as to be interposed between the end of the discharge pipe and the end of the discharge pipe connecting pipe of the valve member to fix the liquid container. 4. The method of assembling a container for a liquid according to claim 3, wherein a weight is attached to the tip of the tubular liquid discharge portion and the tubular liquid discharge portion is passed through the discharge tube by gravity. The assembly method of a liquid container according to claim 3, wherein a ferromagnetic body is mounted on the tip end of the tubular liquid discharge portion and a magnet is inserted from an end portion of the discharge tube to draw the ferromagnetic body to allow the tubular liquid discharge portion to pass through the discharge tube . An inner liner for use in the container for a liquid according to any one of claims 1 to 3,
Wherein the inner liner is formed by depositing a portion of the tubular film and removing the excess portion, the liner body portion and the tubular liquid discharge portion,
Characterized in that the tubular liquid discharge portion passes through the discharge pipe and the inner side of the tubular liquid discharge portion is arranged to be connected to the discharge pipe connecting pipe and the end of the tubular liquid discharge portion is interposed between and fixed to the ferrules Of the inner liner. delete delete

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