JP4344897B2 - Inner bag for large liquid container and liquid filling method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inner bag for a large liquid container and a liquid filling method for filling the inner bag for a large liquid container with a liquid.
[0002]
[Prior art and problems to be solved by the invention]
In recent years, containers for large liquid containers represented by 1 ton containers, etc. are used for food containers such as alcoholic beverages and seasonings, and large containers for industrial chemicals such as detergents. Synthetic resin inner bags are used for ease of use.
[0003]
By the way, when filling the liquid as the content liquid into the inner bag for the large liquid container as described above, the content liquid is filled in the inner bag or the like and placed in the container, and the inner bag is disposed in the container and then the content liquid. There is a method of filling. In particular, as the filling amount increases, it becomes difficult to put the filled inner bag into the container. Therefore, the filling method such as the latter is generally adopted when filling a liquid exceeding 20 liters. is there. In this case, the inner bag is folded compactly in advance for convenience of transportation, and after being stored in a container disposed in the filling device in that state, the filling hose is inserted into the filling port provided in the inner bag. Etc. are connected to fill the liquid, and at this time, the folded inner bag expands as the internal pressure increases due to the liquid filling.
[0004]
After the liquid is filled, the filling port of the inner bag is sealed and the content liquid is transported and stored.
[0005]
However, in the case of the inner bag for a large liquid container as described above, for example, if the above-mentioned stopper is loosened and the liquid content leaks out, the content volume is large, so the damage caused by the leak is great, so it was necessary to reliably prevent the leak. . Moreover, even if it did not lead to leakage, there was a risk that miscellaneous bacteria and the like would enter due to filling. Furthermore, in the case of an inner bag for a large liquid container, since the inner volume is large, the inner bag is difficult to spread particularly upward due to the pressure of the liquid to be filled, and the efficiency of the filling operation is reduced.
[0006]
The present invention has been made in view of the above circumstances, and not only can the liquid be easily filled, but also the inner bag for a large liquid container that can reliably prevent the leakage of the content liquid, and the large liquid container There is provided a liquid filling method capable of easily and reliably filling a liquid in an inner bag and further reliably preventing leakage of the filled content liquid and invasion of various germs.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides (1) an inner bag body for a large-sized liquid container provided with a cylindrical neck portion having an innermost layer made of a heat-welding synthetic resin film, and the neck portion is attached to one end of the cylindrical body. the flange portion of the filling member having a part to attach to the neck portion, and mounted so that the other end of the cylindrical body protrudes outward, the content liquid into the bag body through the filling member a bladder filling, part below the position where the filling member of the neck is mounted in a state where the content liquid is filled in the bag body above is heat-welded, and the opening of the filling member surface and is covered by the main film or another member is broken while connected hermetically and a connection portion of the cylindrical body and the filling jig of the filling member during filling of the content liquid, sterilized in the inner bag, sterilization To aseptic conditions and maintain the sterility conditions. An inner bag for a large liquid container, and (2) an inner bag body for a large liquid container described in (1) above, wherein the innermost layer is provided with a cylindrical neck portion made of a heat-welding synthetic resin film, the flange portion of the filling member to one end of the cylindrical body having a flange portion and attached to the neck portion, and mounted so that the other end of the cylindrical body protrudes outward, sterilize its interior, sterilized And aseptically filling the aseptic bag with liquid aseptically. The inner bag is housed in a container, and the neck is lifted and fixed, and then the filling is performed. A liquid filling method characterized in that a bag is filled with liquid from a member, and then the inner bag main body is sealed by thermally welding a portion of the neck below the position where the filling member is attached. provide.
[0008]
Here, it is more preferable that the inner bag body is formed of a synthetic resin film, and it is more preferable that the inner bag body is a gusset bag. Further, in the liquid filling method, it is more preferable that the filling member is sterilized and then filled while maintaining aseptic conditions.
[0009]
That is, the inner bag for a large-sized liquid container of the present invention is provided with a cylindrical neck portion whose innermost layer is made of a heat-welding synthetic resin film on the inner bag body for a large-sized liquid container, and a collar portion at one end of the cylindrical main body at the neck portion. Since the flange is attached to the neck and the other end of the cylindrical main body protrudes outward, the filling member is fixed by lifting the neck when filling. The workability when the inner bag is stored in the container and filled with the liquid is improved. In addition, when attaching the said filling member, a hole part can also be previously provided in the position which attaches the filling member of the said neck part as needed.
[0010]
Here, if the inner bag body is formed of a synthetic resin film, the manufacture is facilitated. Particularly, if the inner bag body is formed of the same heat-weldable synthetic resin film as the neck portion, the manufacture becomes easier. Is preferred. In addition, when the inner bag body is a gusset bag, the shape of the inner bag bottom can correspond to the shape of the container bottom, so that the inner bag can be easily installed in the container. Moreover, since the part which spreads with the rise of the internal pressure accompanying filling with a liquid turns into a folded part of a gusset, it spreads easily.
[0011]
And the liquid filling method of the present invention is to store the inner bag for a large liquid container in the container and fix the neck portion in a lifted state, and then fill the bag with liquid from the filling member, The portion of the neck below the position where the filling member is attached is thermally welded to seal the inner bag body, so that it is easy and reliable to prevent the content liquid from leaking from the inner bag. Can do. In addition, it is preferable to remove the used filling member after heat welding. By removing in this way, it is possible to prevent damage to the container inner bag body due to the vibration of the filling member during container transportation.
[0012]
Here, after the filling member is sterilized, filling is performed while maintaining an aseptic condition, and after filling, the portion below the position where the filling member of the neck is attached is heat-welded. Since the inner bag body can be easily and reliably sealed while maintaining the state, it is more effective.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a perspective view of a container inner bag 1 illustrating an example of the configuration of an inner bag for a large liquid container according to the present invention, and FIG. 2 shows a state when the container inner bag 1 is filled with liquid. FIG. 3 is a perspective view illustrating a processing method after filling the container inner bag 1 with a liquid.
[0014]
The container inner bag 1 includes an inner bag body 2 made of a heat-welding synthetic resin film and a cylindrical neck portion 3 provided integrally with the inner bag body 2. At the position from the upper end, there is provided a hole 4 serving as a filling port for filling the inner bag main body 2 with a liquid (content liquid) when being stored and filled in the container. A filling member 5 used for filling the liquid is attached to the periphery of the inner bag body. Further, the inner bag body 2 is provided with a hole 6 serving as a discharge port when the content liquid is discharged. A discharge member 7 used for discharging the content liquid is also attached around the hole 6.
[0015]
The container inner bag 1 has a container 8 (see FIG. 2) made of a rigid metal, synthetic resin, wooden box or cardboard box, and stores the content liquid filled in the inner bag body 2. It is an inner bag for a large liquid container to be transported, and the material is not limited, but it is preferably made of a synthetic resin in consideration of ease of production. The internal volume is not particularly limited, but in the present invention, it is preferably 100 liters or more, more preferably 500 to 2,000 liters.
[0016]
The shape of the inner bag main body 2 is not particularly limited, and any one of a blow type, a vacuum type, a pressure type molded type, a film type in which the periphery of a synthetic resin film is heat-sealed, etc. It may be of a type. In the case of the molding type, even if the neck 3 is integrally molded when the inner bag body 2 is molded, the neck 3 molded with a synthetic resin film is attached to the molded inner bag body 2. There may be.
[0017]
Here, when the inner bag main body 2 is of a film type, the four-side sealed bag, the gusset bag, etc., which are sealed around the circumference except for the portion where the neck portion 3 is provided, are flat, square, rectangular or triangular. From the state of being folded into a shape, it is possible to suitably use a liquid that is configured to have a cubic shape, a rectangular parallelepiped shape, or an octagonal prism shape when filled with the content liquid and filled with the exterior container.
[0018]
And when the said inner bag main body 2 is a film type, as for the said inner bag 1, as for the inner bag main body 2 and the neck part 3, both innermost layers are formed with the heat-welding synthetic resin film, and the inner surfaces of the said neck part 3 are mutually It is preferable that heat welding is possible. These synthetic resin films may be single-layer films or laminated films, and the material of the heat-weldable synthetic resin film is not particularly limited, but considers the handleability of the inner bag. For example, polyethylene, polypropylene, ethylene vinyl acetate copolymer, ionomer and other polyolefins, polyethylene terephthalate (PET), inorganic material deposited PET, polyvinyl alcohol, polyamide, etc. are laminated as a sealing layer. What was done can be used suitably. In the case of the present invention, as described above, these single-layer films may be used, or a multilayer film obtained by appropriately combining and laminating these may be used, and the heat-weldable synthetic resin film is not heat-weldable. The film may be laminated so that the heat-welding synthetic resin film is the innermost layer.
[0019]
In addition, although the thickness of the film which comprises the said inner bag is not restrict | limited in particular, If handling property and heat welding property are considered, about 60-400 micrometers is suitable for film thickness. Moreover, the inner bag main body 2 may be comprised by one sheet of these films, and may be comprised by combining two or more of these films.
[0020]
The neck 3 has a cylindrical shape in which a hole 4 serving as a filling port is formed and the upper end is heat-sealed. The heat-weldable synthetic resin film is an innermost layer, and inner surfaces are heat-welded. As long as it is possible, it may be the same material as the inner bag body 2 or a different material, and its size and shape are not particularly limited. In consideration, a length of 10 to 80 cm, particularly 20 to 50 cm, and a circumference of 40 to 120 cm, particularly about 60 to 100 cm are suitable. In forming the neck portion 3, as described above, the neck portion may be formed at the same time as the inner bag body 2 is formed, and unnecessary films may be cut and removed. Also, the inner bag body 2 and the neck portion 3 may be separately provided. You may form and join these.
[0021]
The filling member 5 attached to the neck portion 3 has a flange portion 5b at one end of the cylindrical main body 5a, the flange portion 5b is attached to the peripheral film of the hole portion 4 of the neck portion 3, and the like. It is used when filling the liquid that is the content liquid by attaching it so that the end side protrudes outward, the material is not particularly limited, and it is used for the inlet and filling port of a normal container inner bag etc. Like the filling member to be attached, it can be formed of a material such as a metal or a hard synthetic resin, and considering the ease of attachment to the neck portion 3, it is preferably formed of a synthetic resin.
[0022]
The means for attaching the filling member 5 to the neck portion 3 is not particularly limited. For example, the neck portion 5b is thermally welded or bonded to the periphery of the hole 4 on the inner surface or outer surface of the neck portion 3. It can be fixed to. The hole 4 is formed in advance in order to save the trouble of breaking the film at the time of filling. When it is necessary to keep the inner bag clean until the filling starts, for example, when aseptic filling is performed, The filling member 5 can be attached to the neck 3 without providing the hole 4.
[0023]
In the case of performing aseptic filling, the filling member 5 preferably covers the opening surface with the main body film or another member as described above. When covered with another member, for example, as described in Japanese Patent Application Laid-Open No. 10-35778, the opening surface on the flange 5b side is covered with a membrane member, and the hole 4 is in a sealed state. Alternatively, as described in JP-A-11-152184 or the like, the hole 4 may be sealed by an inner plug fitted to the cylindrical main body 5a of the filling member 5. . In the case of the inner bag 1, the flange portion 5 b of the filling member 5 is attached to the periphery of the filling hole portion 4, and the discharge hole portion 6 is provided around the hole portion 6. Also, the flange portion 7b of the discharging member 7 similar to the above filling member is attached, but only the filling hole portion 4 and only the filling member 5 may be attached. Of course.
[0024]
The discharging member 7 is used when discharging the liquid as the content liquid, and the position of the hole 6 is not particularly limited, but may be below the inner bag body 2. desirable. The discharge member 7 is provided with a cap (not shown) that is screwed into the cylindrical main body 7a, and can be protected by the cap so that the content liquid does not leak when the liquid is filled and when the content liquid is transported and stored. It is like that.
[0025]
The manufacturing method of the inner bag 1 is not particularly limited, and can be manufactured in the same manner as an ordinary inner bag for a large liquid container, except that the neck 3 is provided on the inner bag body 2 as described above.
[0026]
Next, a configuration example of the liquid filling method of the present invention for filling the container inner bag 1 with a liquid as a content liquid will be described. In the liquid filling method of the present invention, the type of liquid to be filled is not particularly limited, and examples thereof include foods such as sauce, mineral water, sake, caramel, and shortening, and industrial chemicals.
[0027]
When filling the container inner bag 1 with a liquid, as shown in FIG. 2, the inner bag body 2 is folded into a flat bag shape, and is stored in the container 8 so that the neck 3 is on the upper side. The neck 3 is lifted so that it comes out above the container 8, the upper end of the neck 3 is clamped and fixed by a fixture 9 provided in the filling device, and connected to a filling tank (not shown). The filling member 5 is set so as to be positioned in the connecting portion 10 a of the tool 10.
[0028]
Then, the cylindrical body 5a of the filling member 5 and the connecting portion 10a of the filling jig 10 are liquid-tightly connected, and the liquid in the filling tank is passed through the filling jig 10 and the filling member 5. Is injected into the bag through the filling hole 4 provided in the neck 3.
[0029]
On the other hand, if the container inner bag 1 is aseptically filled with liquid, as described above, the inside of the inner bag 1 in which the opening surface of the filling member 5 is covered with a main body film or another member is previously prepared in a conventional manner. After sterilization and sterilization treatment, the inner bag 1 is set in the filling device in the same manner as described above while maintaining the aseptic condition in the bag. Then, for example, a sterilizer is interposed in a hose connecting the filling jig 10 and the filling tank, and the cylindrical body 5a of the filling member 5 and the connecting portion 10a of the filling jig 10 are connected. After the airtight connection, the filling member 5, the outer surface of the film covering the opening surface thereof, and the filling system including the filling jig 10 are sterilized and sterilized, and then the film covering the opening surface of the filling member 5 is removed. The liquid in the filling tank is poured into the bag through the filling jig 10 and the filling member 5 by breaking with appropriate means while maintaining the sterile condition.
[0030]
At this time, as the inner bag body 2 is filled with the liquid, a force to inflate the inner bag body in the lateral direction is applied to the inner bag body 2 that is folded into a flat bag shape by water pressure, The bag body 2 easily swells to the desired shape.
[0031]
Therefore, according to the above filling method, the inner bag body 2 originally extends upward due to the fixing of the neck portion 3, so that the inner bag body 2 easily swells when liquid pressure is applied in the lateral direction during filling, so that the liquid Since the inner bag filled with the content liquid is already stored in the container 8, it can be easily stored in the container 8 even if the inner volume is large. is there.
[0032]
Then, after filling the inner bag main body 2 with a predetermined amount of liquid, as shown in FIG. 3, the portion below the position where the filling hole 4 of the neck 3 is provided by the hot plate sealer 11. After heat-sealing and sealing the inner bag body 2 or after sealing, the portion above the heat-welded portion is cut.
[0033]
According to the filling method of the present invention, the portion below the filling hole 4 of the neck portion 3 is thermally welded and sealed after the filling as described above, for example, compared with the case where the filling member 5 is sealed. Thus, it is possible to easily and reliably prevent liquid leakage and invasion of germs. Furthermore, if the portion above the heat-welded portion is cut as described above, the inner bag 1 is easy to handle, and the film is vibrated by the weight of the filling member 5 during transportation, and there is a risk of becoming a pinhole. Can be reduced. In the filling method of the present invention, when aseptic filling is performed as described above, it is safe, reliable, and easy without using a special member as described in JP-A-11-152184, for example. It is also possible to seal the inner bag while maintaining the aseptic condition.
[0034]
In addition, this invention is not limited to the said structure, You may change variously in the range which does not deviate from the summary of this invention.
[0035]
【The invention's effect】
According to the present invention, the inner bag for a large liquid container can be easily aseptically filled with liquid, and furthermore, after filling, liquid leakage during storage and transportation of the content liquid can be easily and reliably prevented. Can do. Further, when aseptically filling the inner bag with the liquid, it is possible to fill and seal the liquid in a state in which the aseptic condition is easily and reliably maintained.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating an example of the configuration of an inner bag for a large liquid container according to the present invention.
FIG. 2 is a perspective view for explaining a configuration example of a liquid filling method according to the present invention.
FIG. 3 is a perspective view for explaining a configuration example of a liquid filling method according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Inner bag for large liquid containers 2 Inner bag main body 3 Neck part 4 Hole part 5 Filling member 5a Cylindrical main body 5b Eave part 8 Container

Claims (6)

Inner top inside bag body for large liquid container provided with a tubular neck portion of a thermally fusible synthetic resin film, the flange portion of the filling member having a flange portion at one end of the cylindrical body該首portion to the neck portion It was attached, and the attachment as the other end of the cylindrical body protrudes outward, a bladder for filling the content liquid in the bag body through the filling member, in the bag body above content liquid is heat welded portion below the position where the filling member of the neck is mounted in a state of being filled, and the opening surface of the filling member, a cylindrical inner liquid the filling member during filling of the is covered by the main film or another member is broken while connecting the connecting portion of the main body and the filling jig in airtight, sterilized in the inner bag, sterilization to a sterility, that it has retained its sterility Features an inner bag for large liquid containers.   The inner bag for a large liquid container according to claim 1, wherein the inner bag body is formed of a synthetic resin film.   The inner bag for a large liquid container according to claim 1 or 2, wherein the inner bag body is a gusset bag. Inner top inside bag body for large liquid container provided with a tubular neck portion of a thermally fusible synthetic resin film, the flange portion of the filling member having a flange portion at one end of the cylindrical body該首portion to the neck portion how to attach and mounted as the other end of the cylindrical body protrudes outward, the internal sterilization, sterilization to a sterility, to liquid aseptic filling the inner bag maintains its sterility The inner bag is housed in a container and fixed with the neck raised, and then filled with liquid from the filling member, and then the neck filling member is attached. A liquid filling method characterized in that the inner bag body is sealed by thermally welding a portion below the position.   The liquid filling method according to claim 4, wherein the used filling member is removed after the neck is thermally welded.   The opening surface of the filling member of the inner bag is covered with a main body film or another member, and after the filling member and the filling jig are hermetically connected, the main body film covering the filling member and the opening surface or another The liquid filling method according to claim 4 or 5, wherein the outer surface of the member is sterilized and aseptic filling is performed.

Images