JP7381318B2 - Container bags and containers - Google Patents

Description

The present invention relates to a container bag and a container that can be used for supplying drugs and the like.

2. Description of the Related Art Conventionally, in the manufacturing process of pharmaceuticals, etc., containers such as flow bottles, which are provided with an outlet at the bottom, have been used for the purpose of storing, moving, supplying, etc. raw materials, intermediate products, etc. of medicines, etc. Containers are used for long periods of time, so containers made of metal such as stainless steel are widely used. If the container is to be filled with new contents after the entire contents have been removed from the lower part of the container, the interior of the container is cleaned to prevent contamination by residues.

Patent Document 1 discloses a cleaning device that sequentially removes a lid, etc., dry cleaning with high-pressure air, wet cleaning with washing water, drying/cooling with hot air, and attaches the lid, etc. when cleaning a container such as a flow bottle. Are listed.
Patent Document 2 discloses that a hopper used for supplying drugs is integrally molded from a flexible elastic material such as silicone rubber, and when changing drugs, the hopper is vibrated to shake off residual old drugs. A drug delivery device capable of

Japanese Patent Application Publication No. 11-47710 Japanese Patent Application Publication No. 2012-51630

When cleaning metal containers, it is necessary to use large amounts of high-purity cleaning water, and it takes time to dry the inside of the container after cleaning. If residual contamination is found when the container is inspected after performing a predetermined cleaning process, the cleaning process must be repeated again, resulting in high costs. Furthermore, depending on the type of medicine supplied to the container, the coating agent on the inner surface of the container may be worn out due to friction with the medicine.

The hopper described in Patent Document 2 is small with a vertical dimension of about 10 to 20 cm. Due to the limitations of the manufacturing method of integral molding, it is difficult to increase the size to the extent that it can be applied to containers. Furthermore, when using silicone rubber, the material is expensive, so it is assumed that the hopper will be used repeatedly. Patent Document 2 does not include any idea of making the hopper single-use (disposable).

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a container bag and a container that can be easily applied to a large container provided with an outlet.

In order to solve the above problems, the present invention includes: a cylindrical accommodating part surrounding a space in which contents are accommodated; a cylindrical first opening to which the contents are supplied in an upper part of the accommodating part; At the lower part of the accommodating part, between the cylindrical second opening from which the contents are taken out, and the accommodating part and the second opening, the content gradually increases in the direction from the lower end of the accommodating part toward the second opening. a cylindrical lower tapered tube portion whose cross-sectional area is reduced to To provide a bag for a container having characteristics.
The structure may include a cylindrical upper tapered cylindrical part whose cross-sectional area gradually decreases in the direction from the upper end of the accommodating part toward the first opening between the accommodating part and the first opening.

The accommodating part has a rectangular cylindrical shape having N side surfaces, and the area between the upper end of the accommodating part and the first opening and from the lower end of the accommodating part to the second opening is the N side surface. It has a rectangular cylindrical shape with side surfaces, and among the N side surfaces, the space between the vertically adjacent sides from the first opening through the accommodating part to the second opening is made of a series of films. The structure may be such that seal portions formed by bonding different films are formed between circumferentially adjacent side surfaces among the N side surfaces that are continuously configured.

The first opening may have means for fixing to the upper end opening of the container, or the second opening may have means for fixing to the lower end opening of the container.
The outer periphery of the accommodating portion may include an engaging portion that engages with the inner surface of the container.

The engaging portion may include a vertically extending seal portion that can be inserted into a vertically extending groove on the container side.
The engaging portion may have a configuration in which a seal portion partitions a cylindrical insertion portion into which a vertically extending rod-like member on the container side can be inserted, and the accommodating portion.
The engaging portion may include a through hole formed in a seal portion extending in the vertical direction into which a hook on the container side can be inserted.

The structure may include a check valve in the first opening or the second opening.
The first opening or the second opening may have a lid piece extending from the series of films.

The present invention also provides a container to which the container bag is attached, the container having a container body that surrounds at least the accommodating portion of the container bag.

The container body may include a hopper section in which the second opening is held at a lower portion of the container body.
The upper part of the container may have an upper opening in which the first opening is held.

Since the container bag of the present invention is continuously constructed from a series of films, it can be easily applied to large-sized containers provided with an outlet. Compared to putting the contents directly into the container, the contents can be prevented from collapsing or cracking.

It is an exploded perspective view showing a container bag and a container of a 1st embodiment. FIG. 2 is a cross-sectional view showing a container bag and a container according to the first embodiment. It is an exploded perspective view showing a bag for containers and a container of a 2nd embodiment. FIG. 7 is a partial cross-sectional view showing a container bag and a container according to a second embodiment. It is a longitudinal cross-sectional view which shows the bag for containers of 2nd Embodiment. FIGS. 3A and 3B are partial cross-sectional views illustrating a container bag with a lid piece; FIGS. FIG. 2 is a partial cross-sectional view illustrating a container bag with a check valve.

Hereinafter, the present invention will be described based on preferred embodiments and with reference to the drawings.

FIG. 1 shows an exploded perspective view of a container bag and a container according to a first embodiment. The container bag 10 includes a cylindrical accommodating part 11 surrounding a space in which the contents are accommodated, a cylindrical first opening cylindrical part 12 to which the contents are supplied at the upper part of the accommodating part 11, and a accommodating part. At the lower part of 11, it has a cylindrical second opening cylindrical part 14 from which the contents are taken out. A first opening 12 a is formed at the tip of the first opening cylindrical portion 12 in the direction in which the first opening cylindrical portion 12 projects upward from the housing portion 11 . A second opening 14 a is formed at the tip of the second opening cylindrical portion 14 in the direction in which the second opening cylindrical portion 14 projects downward from the housing portion 11 .

Here, the up-down direction when referring to upper, lower, upper, lower, etc. is based on the up-down direction when the container bag 10 is attached to the container 20. Moreover, the cross-sectional area of each part of the container bag 10 is a cross-sectional area parallel to a plane perpendicular to the up-down direction, for example, a cross-sectional area along the horizontal direction. The vertical direction may be a vertical direction along gravity. The up and down direction may be inclined from the vertical direction as the direction in which the contents are supplied and taken out according to gravity. Further, the circumferential direction around the shape having the vertical direction as its axis may be simply referred to as the circumferential direction.

The container bag 10 can be made of a film such as a resin film or a laminated film including a resin layer. The film constituting the container bag 10 may be a single layer film consisting of one resin layer, or a multilayer film including two or more multilayers. As the single layer film, a film made of a sealant resin such as a thermoplastic resin is used. Examples of multilayer films include those in which a thermoplastic resin or the like is used as a sealant layer, and a resin or the like different from the sealant layer is laminated thereon as a base layer.

The thermoplastic resin constituting the sealant layer of the film includes polyolefin resins such as polyethylene (PE) and unoriented polypropylene (PP), and cyclic polyolefin resins such as cycloolefin polymer (COP) and cycloolefin copolymer (COC). and modified resins such as polyester. The sealant layer is preferably provided on at least one side of the film. Thereby, the films can be joined with the sealant layers facing each other. The method of joining the films by sealing is not particularly limited, and examples thereof include heat sealing, ultrasonic sealing, high frequency sealing, impulse sealing, and the like.

The resins constituting the base layer of the film include polyester resins such as polyethylene terephthalate (PET), polyamide resins such as nylon (Ny), polypropylene (PP), ethylene-vinyl alcohol copolymer (EVOH), etc. One or more types may be mentioned. Methods for laminating each layer of the laminated film include, but are not particularly limited to, a dry lamination method, an extrusion lamination method, a coextrusion method, and the like. An adhesive layer made of an adhesive, an adhesive resin, an anchor agent, or the like may be provided between the sealant layer and the base material layer of the film in order to bond them together.

The film has a gas barrier layer for blocking gases such as oxygen and water vapor, such as a metal vapor deposited layer such as aluminum, an inorganic compound vapor deposited layer such as silicon oxide or aluminum oxide, and a gas barrier such as EVOH or vinylidene chloride (PVDC). It is also possible to combine one or more of a plastic resin layer, a metal foil such as aluminum foil, and kraft paper. In a composite film including a resin layer and a layer of a material other than resin, examples of the material other than resin include metal, paper, nonwoven fabric, rubber, and the like. When using a fibrous material such as paper, it is preferable to suppress dust generation by using long fibers, impregnated resin, or the like.

The film constituting the container bag 10 is preferably an antistatic film. Thereby, when the contents are powder or the like, or when the granules or the like of the contents produce powder, it is possible to suppress the powder and the like from adhering to the film due to static electricity. The antistatic film has a structure in which an antistatic agent is kneaded into at least one layer of the film, a structure in which the antistatic agent is coated on at least one outer surface of the film, and a monomer having a functional group similar to that of a surfactant. Examples include a configuration in which a copolymerized polymer type antistatic agent is used in at least a portion of the film.

In the film, the surfactant used as an antistatic agent includes at least one of cationic surfactants, anionic surfactants, amphoteric surfactants, and nonionic surfactants. Moreover, examples of antistatic agents other than surfactants include conductive materials such as metal particles, carbon particles, and ionic compounds. The ionic compound may be a combination of an organic cation and an organic anion, a combination of an organic cation and an inorganic anion, a combination of an inorganic cation and an organic anion, or a combination of an inorganic cation and an inorganic anion. It may be an ionic compound that is solid at room temperature, or it may be an ionic compound that is liquid at room temperature, such as an ionic liquid.

The film constituting the container bag 10 may be a light-shielding film. Thereby, the influence of external light on the contents can be suppressed. The light-shielding film has a structure in which a light-blocking agent is kneaded into at least one layer of the film, a structure in which a light-blocking agent is applied to at least one outer surface of the film, and a structure in which a light-reflecting layer made of a metal layer or the like is laminated on the film. Examples include. Examples of the light shielding agent include colorants such as pigments and dyes. When the contents are subjected to the action of ultraviolet rays or infrared rays, an ultraviolet absorber, an infrared absorber, or the like may be used as at least a part of the light shielding agent. Examples of the light reflecting layer include metal foils such as aluminum and metal layers such as metal vapor deposited layers.

The thickness of the film constituting the container bag 10 is not particularly limited as long as the film is flexible and the handleability and durability of the container bag 10 can be ensured, but for example, it is about 50 to 1000 μm. When the capacity of the container bag 10 is small, the thickness of the film may be made thinner, and when the capacity of the container bag 10 is large, the thickness of the film may be made thicker.

The contents of the container bag 10 are not particularly limited, but include pharmaceuticals, foods, seasonings, additives, drugs, industrial products, and the like. The content is preferably in a fluid state such as powder or granules. The content may be an amorphous powder or granule, or may be a granule shaped and granulated like a tablet. The capacity of the container bag 10 is not particularly limited, but it can be applied to large containers of several liters, tens of liters, hundreds of liters, or several kiloliters. Specific examples of the capacity of the container bag 10 include 50L, 100L, 200L, 500L, 1000L, 2000L, and the like.

The container bag 10 has a cylindrical lower taper whose cross-sectional area gradually decreases in the direction from the lower end 11b of the container 11 toward the second opening 14a between the container 11 and the second opening 14a. It has a shaped cylindrical portion 15. The cross-sectional area of the second open cylinder portion 14 may be substantially constant in the vertical direction. The second open cylindrical portion 14 may have a taper with a smaller taper ratio than the lower tapered cylindrical portion 15.

The container 20 to which the container bag 10 is mounted has a container body 21 that surrounds at least the accommodating portion 11 of the container bag 10. The container 20 has a hopper part 24 in the lower part of the container body 21, in which the second opening 14a of the container bag 10 is held. The hopper portion 24 includes a tapered portion 24b whose cross-sectional area decreases downward from the container body 21, and a cylindrical portion 24a whose cross-sectional area is substantially constant in the height direction at the lower end of the tapered portion 24b.

The second opening cylindrical portion 14 of the container bag 10 can be attached to the cylindrical portion 24a of the hopper portion 24. Further, the lower tapered cylindrical portion 15 of the container bag 10 can be attached to the tapered portion 24b of the hopper portion 24. The outer surfaces of the second opening cylindrical portion 14 and the lower tapered cylindrical portion 15 of the container bag 10 are adapted to the shapes of the cylindrical portion 24a and the tapered portion 24b of the hopper portion 24, respectively. As a result, when the contents stored in the accommodating part 11 of the container bag 10 are taken out from the second opening 14a, the contents are smoothly removed according to the shape of the lower tapered cylinder part 15 and the second opening cylinder part 14. can be taken out.

The second opening 14a of the container bag 10 is held in the hopper part 24. For example, the second opening cylindrical portion 14 of the container bag 10 may be suspended so that the second opening 14a is disposed below the hopper portion 24. Alternatively, the vicinity of the second opening 14 a of the second opening cylindrical portion 14 may be folded back to the outside of the cylindrical portion 24 a of the hopper portion 24 , so that the outer surface of the second opening cylindrical portion 14 is brought into close contact with the outer surface of the hopper portion 24 . It's okay.

Means for fixing the second opening cylindrical portion 14 to the hopper portion 24 include, but are not particularly limited to, adhesive members such as adhesive tape, magnetic members such as magnets, clamping members such as clips, and elastic members such as rubber bands. It will be done. In the container bag 10, a means for fixing the second opening tube part 14 to the hopper part 24 may be attached to the second opening part 14a.

The container 20 has a top plate 22 on the top of a container body 21. The top plate 22 has a main body part 22a that is attached to the upper part of the container main body 21, and a ring part 22b that has an upper opening 23 in the center of the main body part 22a. The main body part 22a of the top plate 22 is attached to the upper opening 21a opened at the upper part of the container main body 21. The top plate 22 may be detachable from the upper part of the container body 21, or may be fixed to the container body 21 by welding, screwing, or the like.

The first opening 12a of the container bag 10 is held in the upper opening 23 of the top plate 22. For example, the vicinity of the first opening 12a of the first opening cylindrical portion 12 may be folded back to the outside of the ring portion 22b of the top plate 22, so that the outer surface of the first opening cylindrical portion 12 is brought into close contact with the outer surface of the top plate 22. Good too. The means for fixing the first open cylindrical part 12 to the top plate 22 is not particularly limited, but may be selected from the same configurations as the above-mentioned means for fixing the second open cylindrical part 14 to the hopper part 24. good. In the container bag 10, a means for fixing the first opening cylindrical portion 12 to the top plate 22 may be attached to the first opening 12a.

A lid member 25 for closing the upper opening 23 may be attached to the ring portion 22b of the upper surface plate 22. When the first open tube portion 12 of the container bag 10 is attached to the ring portion 22b of the top plate 22, the first open tube portion 12 may be sandwiched between the top plate 22 and the lid member 25. Preferably, the lid member 25 is fixed to the container 20.

The container bag 10 has a cylindrical upper tapered shape whose cross-sectional area gradually decreases in the direction from the upper end 11a of the container 11 toward the first opening 12a between the container 11 and the first opening 12a. It has a cylindrical portion 13. The cross-sectional area of the first open cylinder portion 12 may be substantially constant in the vertical direction. The first open cylindrical portion 12 may have a taper with a smaller taper ratio than the upper tapered cylindrical portion 13.

Since the container bag 10 has the upper tapered cylinder part 13, the first opening part 12a can be fixed at an appropriate height even if the cross-sectional area of the first opening cylinder part 12 is smaller than the cross-sectional area of the storage part 11. As a result, a tensile force can be applied to the upper tapered cylindrical portion 13 that connects the first open cylindrical portion 12 and the accommodating portion 11. Thereby, the slack of the upper tapered cylindrical portion 13 can be reduced, and the contents introduced through the first open cylindrical portion 12 can be prevented from adhering to the inner surface of the upper tapered cylindrical portion 13. In addition, in the container bag 10, it is also possible to make the part connecting between the first opening cylinder part 12 and the accommodating part 11 a substantially horizontal surface. In this case, it is preferable to ensure a wide head space above the contents accommodated in the accommodating portion 11 so that this substantially horizontal connecting portion is unlikely to come into contact with the contents.

It is also possible to omit the upper tapered cylindrical portion 13 and configure the container bag 10 in which the cross-sectional area of the first opening 12a is approximately the same as the cross-sectional area of the accommodating portion 11. In this case, the first opening 12a may be held in the upper opening 21a of the container body 21. For example, a portion of the first opening cylindrical portion 12 near the first opening 12 a may be folded back to the outside of the container body 21 to bring the outer surface of the first opening cylindrical portion 12 into close contact with the outer surface of the container body 21 . The means for fixing the first open tube section 12 to the container body 21 is not particularly limited, but may be selected from the same configurations as the means for fixing the second open tube section 14 to the hopper section 24 described above. good. In the container bag 10, a means for fixing the first opening cylindrical portion 12 to the container body 21 may be attached to the first opening 12a.

The cross-sectional area of the accommodating portion 11 may be substantially constant in the vertical direction. The accommodating portion 11 may have a taper whose taper ratio is smaller than that of the lower tapered cylinder portion 15 and whose cross-sectional area decreases downward. The accommodating portion 11 may have a taper whose taper ratio is smaller than that of the upper tapered cylindrical portion 13 and whose cross-sectional area decreases upward. The accommodating portion 11 may have a maximum cross-sectional area near the center in the vertical direction, and may have a taper in which the cross-sectional area decreases in each of the vertical directions.

It is preferable that the container bag 10 is constructed from a series of films from the first opening 12a through the storage section 11 to the second opening 14a. For example, when forming the container bag 10 into a circumferentially seamless tube, the storage part 11, the first opening cylindrical part 12, the upper tapered cylindrical part 13, the second opening cylindrical part 14, the lower It is also possible to adjust the amount of molding material supplied depending on the circumferential length of each cylindrical portion constituting the tapered cylindrical portion 15. The cross-sectional shape of each cylindrical portion may be selected from circular, elliptical, polygonal, etc.

When the accommodating part 11 has a rectangular cylindrical shape with N side surfaces 11c, the space between the upper end 11a of the accommodating part 11 and the first opening 12a has N side surfaces 12c and 13c, which are the same number as the accommodating part 11. The space between the lower end 11b and the second opening 14a of the accommodating part 11 is configured into a prismatic cylindrical shape having N side surfaces 14c and 15c, which is the same number as the accommodating part 11. is preferred. In this case, the number of films forming the container bag 10 may be N, and the N side surfaces 11c, 12c, 13c, 14c, and 15c may be formed from different films.

Among these N side surfaces 11c, 12c, 13c, 14c, 15c, side surfaces 11c, 12c, 13c, 14c, 15c that are adjacent in the vertical direction from the first opening 12a to the second opening 14a through the housing section 11 The gap can be constructed from a series of films in succession. Specifically, the boundary between the side surface 11c of the housing portion 11 and the side surface 13c of the upper tapered cylindrical portion 13, the boundary between the side surface 13c of the upper tapered cylindrical portion 13 and the side surface 12c of the first opening cylindrical portion 12, At the boundary between the side surface 11c of the accommodating portion 11 and the side surface 15c of the lower tapered cylindrical portion 15, and at the boundary between the side surface 15c of the lower tapered cylindrical portion 15 and the side surface 14c of the second opening cylindrical portion 14, There are no seams such as seals, allowing for a continuous smooth film surface.

Since there is no seal portion between the vertically adjacent side surfaces 11c, 12c, 13c, 14c, and 15c, unevenness due to the seal portion is unlikely to occur inside the container bag 10. Therefore, the inner surface of the container bag 10 is smoothly continuous, and the contents can smoothly flow from the upper first opening 12a to the lower second opening 14a. Since it is possible to suppress the stagnation of the flow of the contents and the adhesion of the contents to the film, the efficiency in supplying the contents from the hopper section 24 is improved, and the damage of the contents inside the container bag 10 can be prevented. , deterioration, etc. can be suppressed.

At the boundary between the side surface 11c of the accommodating portion 11 and the side surface 15c of the lower tapered cylindrical section 15, and at the boundary between the side surface 15c of the lower tapered cylindrical section 15 and the side surface 14c of the second opening cylindrical section 14, It is preferable that the corners of the cross section along the direction are relaxed and rounded. In order to fix the roundness of the film, the film may be subjected to heat treatment, coating, etc. Although the size of the roundness is not particularly limited, for example, the radius of curvature is about 1 mm to 100 mm. The boundary between the side surface 11c of the housing portion 11 and the side surface 13c of the upper tapered cylindrical portion 13 and the boundary between the side surface 13c of the upper tapered cylindrical portion 13 and the side surface 12c of the first opening cylindrical portion 12 are also rounded. Good too.

Among the N side surfaces 11c, 12c, 13c, 14c, and 15c, a seal portion in which different films are bonded can be formed between circumferentially adjacent side surfaces 11c, 12c, 13c, 14c, and 15c. The seal portion preferably has a structure in which there is little protrusion into the interior of the container bag 10. For example, it is preferable that the inner surfaces of the respective films face each other so that the seal portions protrude outward from the container bag 10. Alternatively, the seal portion may be formed along the circumferential direction of the container bag 10 by overlapping the inner surface of one film and the outer surface of the other film.

The number N of side surfaces 11c when the accommodating portion 11 is formed into a rectangular tube shape is not particularly limited, but is preferably about 3 to 12. The widths of the films constituting the side surface 11c may be approximately equal to each other, or two or more different widths may be combined. The cross-sectional shape of the rectangular cylindrical housing portion 11 is not particularly limited, but examples include a triangle, a quadrangle, a pentagon, a hexagon, a heptagon, an octagon, etc. Among these, examples of the quadrilateral include a square, a rectangle, a rhombus, etc. .

A method for attaching the container bag 10 to the container 20 is, for example, by inserting the empty container bag 10 into the container 20 and fixing or temporarily fixing the first opening 12a and the second opening 14a to the container 20. Thereafter, a method of inflating the container bag 10 within the container 20 by blowing clean gas such as air through at least one of the first opening 12a or the second opening 14a is exemplified. When blowing gas through one opening, the other opening may be closed. When the container bag 10 is attached to the container 20, or when the contents are supplied to the container bag 10 in the container 20, the outer surface of the accommodating part 11 changes to the container body 21 according to the gas pressure or the weight of the contents. It may be in close contact with the inner surface over a wide range or over the entire surface.

FIG. 2 is a cross-sectional view illustrating a state in which the storage portion 11 of the container bag 10 is stored in the container body 21. As described above, each side surface 11c of the housing portion 11 is made of a different film F, and the adjacent side surfaces 11c are joined by the seal portion 16 of the film F. The seal portion 16 extends in the vertical direction of the container bag 10. The container body 21 may have a side surface 21c corresponding to the side surface 11c of the accommodating portion 11.

A groove 26 extending in the vertical direction may be provided between circumferentially adjacent side surfaces 21c of the container body 21. In this case, the container bag 10 can be engaged with the container 20 by inserting the seal portion 16 of the container bag 10 into the groove 26 on the container 20 side. That is, the seal portion 16 can be used as an engaging portion that engages with the inner surface of the container 20.

The configuration of the engaging portion that engages the outer periphery of the accommodating portion 11 with the inner surface of the container 20 is not limited to the seal portion 16 that is inserted into the groove portion 26 on the container 20 side. A structure may be adopted in which the container body 21 is provided with a support such as a hook, a pin, a rivet, a nut, etc., and the support on the container side is inserted and fixed into a through hole formed in the seal portion 16 extending in the vertical direction. A clip or the like that clamps and fixes the seal portion 16 in the thickness direction may be used.

In order to reinforce the engagement structure of the seal portion 16 with the container 20, a reinforcing plate made of resin, metal, or the like may be bonded to the seal portion 16. The reinforcing plate may be folded in two so as to sandwich the seal portion 16 from both sides in the thickness direction. When a through hole is formed in the seal portion 16, a reinforcing ring such as an eyelet may be provided in the through hole.

It is preferable to engage the outer periphery of the accommodating part 11 with the inner surface of the container 20 because the accommodating part 11 can be stably attached to the container body 21. In this case, the contents may be supplied into the container bag 10 attached to the container 20 without performing the step of inflating the container bag 10 inside the container 20. Alternatively, the container bag 10 may be inflated within the container 20 by supplying gas at the same time as the contents are supplied.

When supplying contents, gas, etc. to the inside of the container bag 10, an opening/closing means such as a valve or a closing means (not shown) such as a lid may be attached to close the extraction path of the hopper section 24. . By providing the hopper section 24 with opening/closing means or closing means, the contents can be continuously stored in the container 20.

It is preferable that the hopper section 24 has a smooth inner surface in order to suppress retention of the contents and facilitate removal. This makes it easy to maintain a smooth surface of the lower tapered cylindrical portion 15 when the container bag 10 is attached to the container 20. When the film constituting the container bag 10 is thick, the inner surface of the hopper portion 24 may be roughened within a range that maintains the smoothness of the inner surface of the film. Thereby, slipping of the lower tapered cylindrical portion 15 with respect to the hopper portion 24 can be suppressed.

Next, with reference to FIGS. 3 to 5, a container bag 10A and a container 20A according to a second embodiment will be described. FIG. 3 is an exploded perspective view of the container bag 10A and the container 20A. FIG. 4 is a partial cross-sectional view illustrating a structure in which the accommodating portion 11 of the container bag 10A is engaged with the container body 21 of the container 20A. FIG. 5 is a longitudinal cross-sectional view of the container bag 10A.

The container bag 10A of the second embodiment has a cylindrical insertion part 17 on the outer periphery of the accommodating part 11 as an engaging part that engages with the inner surface of the container 20A. The container 20A has a rod-shaped member 27 extending in the vertical direction. In other respects, the container bag 10A and the container 20A of the second embodiment can be constructed in the same manner as the container bag 10 and the container 20 of the first embodiment, so a duplicate explanation will be omitted.

Between the insertion part 17 and the accommodating part 11, different films F forming each side surface 11c of the accommodating part 11 are joined by a sealing part 16. Thereby, the unsealed portion 17a of the insertion portion 17 is partitioned so as to seal the contents by the seal portion 16 without interfering with the internal space of the accommodating portion 11. It is preferable that the seal portion 16 between the insertion portion 17 and the accommodating portion 11 is continuous in the vertical direction.

Further, the film F is also joined by the seal portion 16 on the outside of the insertion portion 17, which is the opposite side of the insertion portion 17 from the accommodating portion 11. Between the seal part 16 between the insertion part 17 and the housing part 11 and the seal part 16 on the outside of the insertion part 17, there is a space through which the rod-shaped member 27 can be inserted from at least one of the upper and lower directions, and an unsealed part. 17a. The seal portion 16 outside the insertion portion 17 may be continuous in the vertical direction, or may be a discontinuous seal portion 16 in which unsealed portions are interposed intermittently.

The unsealed portion 17a of the insertion portion 17 may reach both upper and lower ends of the insertion portion 17 and be open in the vertical direction. When the rod-shaped member 27 is inserted from either the upper direction or the lower direction, the unsealed portion 17a may be closed by the sealed portion 16 or the like at a location that the inserted rod-shaped member 27 does not reach. When the rod-shaped member 27 is inserted from below, the upper end of the unsealed portion 17a may be closed, and at least a portion of the load of the accommodating portion 11 may be applied to the upper end of the rod-shaped member 27. A sealing member (not shown) that fits the upper end of the rod-shaped member 27 may be provided at the upper end of the unsealed portion 17a using a molded product such as resin.

The containers 20 and 20A in the first embodiment and the second embodiment are devices that function as containers for accommodating contents even if the container bags 10 and 10A are not attached. In this case, the container main body 21 and the hopper section 24 are constituted by a cylindrical body having a continuous wall surface in the circumferential direction. Examples of the cylindrical body constituting the container body 21 and the hopper section 24 include a cylindrical body and a rectangular cylindrical body, but the cross-sectional shape is not limited to circular or polygonal, and may be of various shapes. Moreover, the shape of the container body 21 may have a taper in either the vertical direction.

Although not particularly illustrated, the containers 20 and 20A may be provided with support means such as legs and columns in order to support the container body 21 and the hopper section 24. The support means may be integrated into the containers 20, 20A, or may be removable from the containers 20, 20A. When the support means is installed on the installation surface of the containers 20, 20A, if the support means extends below the area surrounding the hopper section 24, a space is secured between the installation surface and the hopper section 24. be able to. This space can be used for taking out the contents from the hopper part 24 or for fixing the second open cylinder part 14 of the container bag 10, 10A to the hopper part 24.

Below the hopper section 24, a container, a conveyor, a cart, etc. for receiving the contents taken out from the hopper section 24 may be arranged. Further, a hole or the like may be provided below the installation surface, and the contents may be received below the hole or the like. The containers 20, 20A may be provided with moving means such as casters, wheels, sliders, etc., for example, as supporting means. The containers 20 and 20A may be freely movable on a floor surface or the like, or may be guided in a predetermined direction or route on a track such as a rail.

According to the container bags 10 and 10A of each of the embodiments described above, they can be easily attached to large containers 20 and 20A provided with an outlet such as the hopper section 24. In addition, with conventional containers, it costs a lot of money to clean the inside of the container when replacing, changing, or replenishing the contents. The body 10, 10A can be removed and a new container bag body 10, 10A can be easily installed. By making the container bags 10 and 10A single-use (disposable), the cleaning process can be omitted or simplified, and costs can be reduced.

Moreover, since the inner surfaces of the containers 20, 20A are protected by the container bags 10, 10A, damage and deterioration of the containers 20, 20A can be suppressed. For example, if a coating agent is formed on the inner surface of the container body 21, hopper portion 24, etc., it can be expected that wear of the coating agent will be suppressed. Furthermore, compared to the case where the contents are directly put into the containers, the contents supplied to the containers 20 and 20A come into contact with the film F, thereby preventing the contents from collapsing or cracking.

When providing new container bags 10, 10A for containers 20, 20A placed in a clean environment, the container bags 10, 10A are folded into a small size and packaged in an outer bag or the like. It is preferable to introduce it into a clean environment in a clean state. Thereby, the container bags 10, 10A can be quickly introduced into a clean environment by simply cleaning the outer surface of the outer bag.

When storing the container bags 10, 10A in a package such as an outer bag, gas sterilization using ethylene oxide, heat sterilization, radiation sterilization, etc. are used to package the container bags 10, 10A. The inside of the can be sterilized. The inside of the package may be filled with an inert gas such as nitrogen gas or argon gas. The process of accommodating the container bags 10, 10A in the packaging is preferably performed in an environment as clean as or more than that in which the containers 20, 20A are placed. The cleanliness of a clean environment can be classified into classes based on, for example, the concentration of suspended particles.

The material constituting the containers 20, 20A is not particularly limited, but examples include metals such as stainless steel and aluminum, synthetic resins such as heat-resistant resins and hard resins, and fiber-reinforced plastics such as carbon fiber-reinforced plastics and glass fiber-reinforced plastics. . By making the container bags 10, 10A single-use (disposable), the frequency and degree of cleaning of the containers 20, 20A can be reduced, but the durability of the containers 20, 20A to withstand washing, drying, etc. can be reduced. It is preferable to have.

Although the present invention has been described above based on the preferred embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. Modifications include additions, substitutions, omissions, and other changes to components in each embodiment. It is also possible to appropriately combine the components used in two or more embodiments.

As shown in FIG. 6, the lid piece 18 may extend from at least one of the films forming the side surface 12c of the first open cylinder section 12. FIG. 6A shows an example in which the lid piece 18 is a film extending from one side surface 12c. FIG. 6(b) shows an example in which the lid piece 18 is a film extending from the two side surfaces 12c. By covering the first opening 12a with the lid piece 18, an operator's hand or tool may be accidentally inserted into the first opening 12a until the first opening 12a is closed with the lid member 25 or the like. It is possible to suppress insertion inside and improve work efficiency.

When two or more lid pieces 18 are formed around the first opening 12a, the two or more lid pieces 18 can be easily combined by providing a notch, notch, tongue piece, etc. in the lid piece 18. It may be possible to do so. Further, although not particularly illustrated, it is also possible to cover the second opening 14a with a lid piece 18 extending from at least one of the films forming the side surface 14c of the second opening cylindrical portion 14.

As shown in FIG. 7, the second opening cylindrical portion 14 may be provided with a valve body 19 that opens and closes a content extraction path through the second opening 14a. The valve body 19 may be a valve that is opened and closed by operation, such as a cock, or may be a valve that automatically prevents movement in an unintended direction, such as a check valve. The valve body 19 may be configured by extending at least one film from among the films that constitute the second open cylinder portion 14 . A valve body 19 formed separately from resin, metal, or the like may be fixed to the second open cylinder portion 14. Further, although not particularly shown in the drawings, a valve body 19 may be provided in the first open cylinder portion 12 to open and close a supply path for the contents through the first opening 12a.

F...Film, 10, 10A...Container bag, 11...Accommodation part, 11a...Upper end of accommodation part, 11b...Lower end of accommodation part, 11c...Side surface of accommodation part, 12...First opening cylindrical part, 12a...No. 1 opening, 12c...side surface of first opening cylindrical portion, 13...upper tapered cylindrical portion, 13c...side surface of upper tapered cylindrical portion, 14...second opening cylindrical portion, 14a...second opening, 14c...th 2 side surface of the open cylindrical portion, 15... lower tapered cylindrical portion, 15c... side surface of the lower tapered cylindrical portion, 16... sealed portion, 17... insertion portion, 17a... unsealed portion, 18... lid piece, 19... Valve body, 20, 20A...Container, 21...Container body, 21a...Top opening of container body, 21c...Side surface of container body, 22...Top plate, 22a...Main part of top plate, 22b...Ring part of top plate , 23... Upper opening of top plate, 24... Hopper part, 24a... Cylindrical part of hopper part, 24b... Taper part of hopper part, 25... Lid member, 26... Groove part, 27... Rod-shaped member.

Claims (12)

The hopper includes a tapered part whose cross-sectional area decreases downward from the container main body, and a cross-sectional area that is substantially constant in the height direction at a lower end of the tapered part. In a bag for a container having a cylindrical part,
The bag body is
a cylindrical storage part surrounding a space in which contents are stored;
a cylindrical first opening into which the contents are supplied in the upper part of the storage part;
A second opening formed at the tip of a cylindrical second opening cylindrical part from which the contents are taken out at the lower part of the storage part;
a cylindrical lower tapered cylindrical portion whose cross-sectional area gradually decreases in a direction from the lower end of the accommodating portion toward the second opening, between the accommodating portion and the second opening;
has
The outer surface of the second opening cylindrical portion is adapted to match the shape of the cylindrical portion of the container, and the outer surface of the lower tapered cylindrical portion is adapted to the shape of the tapered portion of the container. It looks like this,
A bag for a container , characterized in that the area from the first opening through the accommodating part to the second opening is comprised of a series of films. A cylindrical upper tapered cylindrical portion whose cross-sectional area gradually decreases in a direction from an upper end of the accommodating portion toward the first opening is provided between the accommodating portion and the first opening. The container bag according to claim 1. The accommodating portion has a rectangular cylindrical shape with N side surfaces,
The area from the upper end of the accommodating part to the first opening and from the lower end of the accommodating part to the second opening has a rectangular cylindrical shape having the N side surfaces,
Among the N side surfaces, between the vertically adjacent side surfaces from the first opening through the accommodating section to the second opening is continuously constructed from a series of films,
3. The container bag according to claim 1, wherein a seal portion formed by joining different films is formed between circumferentially adjacent side surfaces among the N side surfaces. Any one of claims 1 to 3, wherein the first opening has means for fixing to the upper end opening of the container, or the second opening has means for fixing to the lower end opening of the container. The container bag according to item 1. The bag for a container according to any one of claims 1 to 4, characterized in that the outer periphery of the accommodating part has an engaging part that engages with the inner surface of the container. 6. The bag for a container according to claim 5, wherein the engaging portion comprises a vertically extending seal portion that can be inserted into a vertically extending groove on the container side. 5. The engaging portion is characterized in that a cylindrical insertion portion through which a rod-shaped member extending in the vertical direction on the container side can be inserted and the accommodating portion are partitioned by a seal portion. Container bag described in . 6. The container bag according to claim 5, wherein the engaging portion is a through hole formed in a seal portion extending in the vertical direction into which a hook on the container side can be inserted. The container bag according to any one of claims 1 to 8, further comprising a check valve in the first opening or the second opening. The container bag according to any one of claims 1 to 9, wherein the first opening or the second opening has a lid piece extending from the series of films. . A container equipped with the container bag according to any one of claims 1 to 10, wherein the container body surrounding at least the accommodating portion of the container bag , and a lower part of the container body, and the hopper portion in which the second opening is held . 12. The container according to claim 11 , wherein the container has an upper opening in which the first opening is held.

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