WO2015152337A1

WO2015152337A1 - Infusion container

Info

Publication number: WO2015152337A1
Application number: PCT/JP2015/060364
Authority: WO
Inventors: 山内　由夫; 真輔樽野; 江口　鉄明
Original assignee: キョーラク株式会社
Priority date: 2014-04-04
Filing date: 2015-04-01
Publication date: 2015-10-08
Also published as: JP6492623B2; TW201603802A; JP2015198908A

Abstract

[Problem] To provide an infusion container which is independent and can impart adequate ultraviolet absorption ability and oxygen barrier ability without the use of an exterior material, and which obviates the need for an air needle during dripping. [Solution] An infusion container configured from an outer layer in contact with outside air and an inner layer peelably layered with the outer layer, and having a mouth part at one end thereof and a bottom part at the other end thereof. A liquid medicine is accommodated inside the inner layer. An air introduction part is provided to the outer layer. The mouth part is oriented downward, air is passed between the outer layer and the inner layer from the air introduction part, and the liquid medicine in the inner layer is dripped. The air introduction part is formed by forming a hole in the outer layer, for example, and is blocked by affixing a label thereto and opened by peeling off the label.

Description

Infusion container

The present invention relates to an infusion container that contains a drug solution for infusion and the like, and relates to a novel infusion container that contains a drug solution in an inner layer that can be peeled from an outer layer.

Infusion bags formed of a film-like plastic material are widely used as containers for storing infusion chemicals and the like. A general infusion bag has a certain degree of flexibility, and can be smoothly dropped by being deformed as the drug solution is dropped.

For example, Patent Document 1 discloses an infusion chemical solution container that can be integrally molded from a flexible plastic material by blow molding and can be dripped without using an air needle. The infusion chemical container described in Patent Document 1 is formed by forming a flexible plastic material such as polypropylene or polyethylene that is difficult to adsorb drugs or the like into a rugby ball shape by blow molding. The hanger is integrally formed with the hanger.

In the case of a bottle-type drip container such as a glass bottle, it is necessary to use an air needle when dripping the drug solution. However, in the drug solution container described in Patent Document 1, if the inside becomes negative pressure, the whole is crushed. Since it deform | transforms, even if it does not use an air needle, a chemical | medical solution can be dripped smoothly. Moreover, since it collapses easily until the inner surface of both wall surfaces which form a trunk | drum closely_contact | adhere, the amount of chemical | medical solutions which remain | survives finally becomes small.

Japanese Utility Model Publication No. 4-41863

As mentioned above, although it is an infusion bag that has many practical advantages over bottle-type containers, such as the need to use an air needle, it still has various problems. For example, an infusion bag formed of a flexible plastic material has a problem that it is not self-supporting and is difficult to store. Since infusion bags that are not self-supporting cannot be stored side by side in a self-supporting state, the occupied area for storage becomes large. It is also difficult to stack.

Furthermore, there is a problem that selection of a flexible plastic material used for the infusion bag is limited, and various functions cannot be given. For example, since the chemical solution used for infusion may be altered when exposed to ultraviolet rays, it is desirable to impart ultraviolet absorption capability to the infusion bag. However, the ultraviolet absorber is applied to the plastic material that constitutes the infusion bag in contact with the chemical solution. It is difficult to add. This is because the ultraviolet absorber may ooze out on the surface and enter the chemical solution.

Therefore, a general infusion bag employs a method of storing it in an outer packaging material. If an ultraviolet absorbent is mixed in the exterior material, exposure to ultraviolet rays can be prevented without adversely affecting the chemical solution in the infusion bag.

In addition, the infusion bag needs to block oxygen to prevent oxidation of the chemical solution. An ethylene-vinyl alcohol copolymer is known as a plastic material having an excellent oxygen barrier property, but it is difficult to use as a plastic material for an infusion bag because it lacks flexibility. Therefore, an oxygen absorber (deoxygenating agent) is put in the exterior material to prevent an adverse effect due to oxygen.

However, the use of the exterior material as described above not only causes a decrease in productivity and an increase in cost, but also necessitates opening the exterior material and taking out the infusion bag at the time of use. There is also a problem of becoming.

The present invention has been proposed in view of such a conventional situation, can provide a sufficient ultraviolet absorption function and oxygen barrier function without using an exterior material, has self-supporting properties, and is drip-injected. An object is to provide an infusion container that sometimes does not require an air needle.

In order to achieve the above-mentioned object, the infusion container of the present invention is composed of an outer layer in contact with the outside air and an inner layer laminated so as to be peelable from the outer layer, and has a mouth at one end and a bottom at the other end. A liquid medicine is contained in the inner layer, an air introduction part is provided in the outer layer, the mouth part is directed downward, and the air introduction part is interposed between the outer layer and the inner layer. Air is circulated, and the chemical solution in the inner layer is dropped.

In the infusion container of the present invention, only the inner layer is peeled off from the outer layer and deformed, and the smooth dropping of the chemical solution is performed. Therefore, so-called head space is unnecessary, and gas replacement of the head space is also unnecessary. Moreover, it is not necessary to use an air needle as in the case of the infusion chemical container described in Patent Document 1. Furthermore, it is not necessary to mix an ultraviolet absorber or the like in the inner layer, and the contained chemical solution is not adversely affected.

On the other hand, since the outer layer is not in direct contact with the chemical solution, there is no restriction on the plastic material to be used. For example, if it is made of a plastic material that is somewhat rigid, it should be configured as a self-supporting infusion bottle. Is possible. Further, if an ultraviolet absorber is mixed in the outer layer or the outer layer is formed of a plastic material having an excellent oxygen barrier property, it is not necessary to use an exterior material.

According to the present invention, it is possible to provide an infusion container capable of smoothly dropping a chemical solution without using an air needle. In addition, according to the present invention, it is possible to provide an infusion container that can provide a sufficient ultraviolet absorption function, oxygen barrier function, etc. without adversely affecting the stored chemical solution, and does not require the use of an exterior material. Is possible. Since it is not necessary to use an exterior material, it is advantageous in terms of manufacturing cost and workability. Furthermore, according to the present invention, an infusion container having a self-supporting property can be provided and can be efficiently stored.

It is a schematic perspective view which shows one Embodiment of the infusion container to which this invention is applied. It is a schematic sectional drawing of the infusion container shown in FIG. It is a principal part schematic sectional drawing which shows an example of the sticking state of a seal | sticker. It is a principal part schematic sectional drawing which shows the other example of the sticking state of a seal | sticker. It is a principal part schematic sectional drawing which shows the further another example of the sticking state of a seal | sticker. It is a principal part schematic sectional drawing which shows an example of the obstruction | occlusion state by the seal | sticker at the time of installing a check valve. It is a side view which shows an example of a check valve. FIG. 8 is a plan view of the check valve shown in FIG. It is a schematic sectional drawing of the non-return valve shown in FIG. It is a schematic sectional drawing which shows the obstruction | occlusion state by a spherical body in the check valve shown in FIG. It is a schematic sectional drawing which shows the open state by an air hole in the non-return valve shown in FIG. It is a perspective view which shows the other example of a non-return valve. It is a schematic sectional drawing which shows the attachment state of the non-return valve shown in FIG. It is a schematic sectional drawing which shows an example of the laminated constitution of a seal | sticker. It is a figure explaining the sticking method of a seal | sticker. It is a bottom view of other embodiments of an infusion container to which the present invention is applied. FIG. 16 is a cross-sectional view taken along line xx of FIG. It is a figure which shows typically the usage condition of the infusion container to which this invention is applied.

Hereinafter, embodiments of an infusion container to which the present invention is applied will be described in detail with reference to the drawings.

As shown in FIG. 1, the infusion container 1 of the present invention has a mouth 3 at one end of a container body 2 and a bottom 4 at the other end. In FIG. 1, it is turned upside down, the mouth 3 is provided below, and the bottom 4 is located above.

In addition, a cap 5 is attached to the mouth 3, and the neck 6 near the mouth 3 is provided with a strength for preventing the supply of chemical liquid from being interrupted by inadvertent deformation. A plurality of annular ribs 7 are formed. On the other hand, a suspending portion 8 for suspending the infusion container 1 on an infusion stand or the like is integrally formed on the bottom portion 4, and the infusion is performed by hooking the suspending portion 8 on the infusion stand. ing.

The infusion container of the present invention is a so-called delamination type container applied to an infusion container, and the infusion container 1 of the present embodiment also has an outer layer 11 in contact with the outside air and the outer layer 11 as shown in FIG. On the other hand, it is comprised from the inner layer 12 laminated | stacked so that peeling is possible. For example, in order to make the outer layer 11 and the inner layer 12 separable from each other, the non-adhesive resins are overlapped and blow-molded to form the infusion container 1 in a form in which the outer layer 11 and the inner layer 12 are laminated. .

Here, the plastic material constituting the outer layer 11 and the inner layer 12 may be selected so as not to adhere to each other so as to be peelable, and any plastic material can be selected as long as the requirements are satisfied. However, it is preferable to select an optimum one in consideration of performance and function required for each of the outer layer 11 and the inner layer 12.

For example, since the inner layer 12 is in direct contact with the chemical solution contained therein, it is required that the component (medicine) contained in the chemical solution is not adsorbed as much as possible. Moreover, in order to drop the accommodated chemical | medical solution smoothly, it is preferable that it is flexible. From such a viewpoint, the plastic material used for the inner layer 12 is preferably a polyolefin resin material such as polypropylene or cyclic polyolefin. The form of the inner layer 12 is a film so that it can shrink.

If an ultraviolet absorber or the like is mixed in the outer layer 11 as described later, it is not necessary to mix the ultraviolet absorber or the like in the inner layer 12. If an ultraviolet absorber or the like is mixed in the inner layer 12 in contact with the chemical solution, there is a possibility that the chemical solution is transferred to the chemical solution by so-called bleed or the like, but if the additive such as the ultraviolet absorber is not mixed in the inner layer 12, the stored chemical solution Will not be adversely affected.

On the other hand, since the outer layer 11 does not come into contact with the chemical solution, it does not affect the chemical solution contained in the inner layer 12 and is not required to be flexible. You can choose freely. For example, if a plastic material having a certain degree of rigidity is selected, the infusion container 1 can be a self-supporting container (bottle). If the infusion container 1 can be a self-supporting container, storage becomes easy.

Also, the outer layer 11 can be mixed with additives necessary for imparting various functions such as an ultraviolet absorber, thereby protecting the contained chemical solution. If a necessary amount of an ultraviolet absorber is added to the outer layer 11, the stored chemical solution is not exposed to ultraviolet rays, and alteration of the chemical solution can be prevented.

Furthermore, it is also possible to use a resin material having an excellent oxygen barrier property for the outer layer 11. For example, ethylene-vinyl alcohol copolymer (EVOH) is a resin material having an excellent oxygen barrier property, but it is difficult to use a relatively thick EVOH layer for an infusion bag because it lacks flexibility. In the infusion container 1 of the present invention, since the outer layer 11 may lack flexibility, the outer layer 11 is formed so as to have a thick (for example, 100 μm or more) ethylene-vinyl alcohol copolymer layer. Is possible. If the outer layer 11 is formed so as to have an ethylene-vinyl alcohol copolymer layer, an oxygen barrier property can be added to the infusion container 1, and measures such as putting a deoxidizing material in an exterior material are not necessary. .

Most preferably, the outer layer 11 is formed of an ethylene-vinyl alcohol copolymer, and an additive such as an ultraviolet absorber is added thereto. As a result, oxygen and ultraviolet rays are blocked, and the contained chemical solution can be protected from these.

Further, by providing a polypropylene or polyethylene layer at the innermost position of the outer layer 11 and a thin EVOH layer (for example, less than 100 μm in thickness) at the outermost position of the inner layer 12, the outer layer 11 and the inner layer 12 are provided. And the oxygen barrier properties can be improved. In this layer configuration, a layer of other resin (low density polyethylene, linear low density polyethylene, etc.) can be provided on the inner adjacent layer of the EVOH layer of the inner layer 12 via an adhesive layer. In the configuration, if the thin EVOH layer is interrupted due to molding failure or the like, the outer layer 11 and the inner layer 12 do not peel off, so the inner layer 12 is peeled off from the outer layer 11 before filling the contents. By performing (preliminary peeling), molding defects of thin EVOH can be reliably found. Further, a nylon layer can be provided instead of the EVOH layer.

The outer layer 11 may be transparent or opaque, but by making the outer layer 11 transparent, the contraction state of the inner layer 12 can be visually confirmed, which can be said to be a preferable embodiment.

As described above, the infusion container 1 of the present embodiment is a delamination-type container, and the outer layer 11 and the inner layer 12 are laminated so as to be peeled off. However, the inner layer 12 is smooth when in use (drip). It is necessary for the drug solution to drip. In order to realize such smooth dripping, the infusion container 1 of the present embodiment is provided with an air introduction part. By providing an air introduction part and introducing air between the outer layer 11 and the inner layer 12 from here, the peeling of the inner layer 12 is promoted, the inner layer 12 is quickly deflated, and a chemical solution is dropped.

In the infusion container 1 of the present embodiment, the air introduction part is formed by providing an air introduction hole 13 in the outer layer 11 of the container body 2. By forming the air introduction hole 13 in the outer layer 11, air is introduced between the outer layer 11 and the inner layer 12 from here, and peeling of the outer layer 11 and the inner layer 12 proceeds.

Also, a seal 14 is affixed to the air introduction hole 13 provided in the outer layer 11, so that the air introduction hole 13 is closed when not in use. When not in use, it is not necessary to introduce air from the air introduction hole 13, and the air introduction hole 13 is closed with a seal 14 to prevent the outer layer 11 and the inner layer 12 from being inadvertently separated. Can do. In use, the seal 14 may be peeled off, whereby the air introduction hole 13 is opened and air is introduced between the outer layer 11 and the inner layer 12.

In the case of the infusion container 1, sterilization may be performed depending on the contents. For example, when steam sterilization is employed as the sterilization process, if the air introduction hole 13 is open, moisture may enter from there. If the air introduction hole 13 is closed with the seal 14 as in this embodiment, water vapor (moisture) does not inadvertently enter between the outer layer 11 and the inner layer 12.

The closing structure of the air introduction hole 13 is not limited to this, and various changes can be made. For example, in the example shown in FIG. 2, the air introduction hole 13 is formed in the flat portion of the container body 2, and the label 14 is attached to the flat surface so as to close the air introduction hole 13. The protrusion 31 may be provided so as to surround the introduction hole 13 and the label 14 may be attached to the top thereof. The seal 14 can be easily peeled off by sealing the label 14 in a linear shape with the shape of the protrusion 31 having a substantially triangular cross-section and a pointed top. When it is necessary to give pressure resistance to the sticking state of the seal 14, the shape of the protrusion 31 may be a substantially trapezoidal cross section as shown in FIG. This increases the bonding area and ensures pressure resistance.

As described above, the protrusion 31 is formed around the air introduction hole 13 and the seal 14 is pasted thereon, so that the seal 14 is slightly lifted from the container body 2, and the seal 14 is easily picked and peeled off. However, when the infusion containers 1 come into contact with each other during transport, for example, the seal 14 may be inadvertently peeled off. In order to avoid such a situation, for example, as shown in FIG. 5, a recess 32 is provided in the container body 2 around the air introduction hole 13, a protrusion 31 is formed in the recess 32, and the seal 14 is attached. You can do it. If the depth of the recess 32 is made slightly larger than the sum of the height of the protrusion 31 and the thickness of the seal 14, the pasted seal 14 is dropped into the recess 32 of the container body 2, and Even if the infusion containers 1 come into contact with each other, the seal 14 is not inadvertently peeled off.

Furthermore, it is possible to provide a check valve in the air introduction hole 13. As described above, the air introduction hole 13 has the seal 14 attached thereto. However, after the seal 14 is peeled off, the air introduction hole 13 is opened. If air is introduced from the air introduction hole 13 in this state and the separation of the outer layer 11 and the inner layer 12 proceeds, foreign matter may enter from the air introduction hole 13. If a check valve is installed in the air introduction hole 13, such foreign matter can be prevented from entering.

FIG. 6 shows a state in which the check valve 41 is attached to the air introduction hole 13. In this example, a recess 42 is formed around the air introduction hole 13 so that the check valve 41 does not protrude. Yes. Further, a protrusion 43 is formed around the recess 42 and is closed by the seal 14.

7 to 10 show an example of the shape of the check valve. The check valve 41 of this example includes a trunk portion 44, a bulging portion 46 formed below the trunk portion 44 and having air holes 45 on the bottom surface, and a large diameter portion 47 formed above the trunk portion 44. It is composed of In the state of being attached to the air introduction hole 13, the bulging portion 46 and the large diameter portion 47 are fixed to the container body 2 by being locked to the outer layer 11. At this time, by making the peripheral surface of the body portion 44 a tapered surface, the air introduction hole 13 can be firmly fitted, and the outflow of air from this portion can be minimized.

The inside of the barrel portion 44, the bulging portion 46, and the large diameter portion 47 is a cavity 48 that extends vertically, and a sphere 49 is accommodated in the cavity 48. The sphere 49 is formed of an elastic body such as rubber. Further, the large-diameter portion 47 is provided with a stopper portion 50 on the inner peripheral portion so as to prevent the sphere 49 from falling off. Therefore, at the time of squeezing, as shown in FIG. 9, the sphere 49 is moved to the large diameter portion 47 side by the force of air passing through the air hole 45 and is pressed against the stopper portion 50, so that the air does not flow out. At the end of the squeeze, since the negative pressure is generated between the outer layer 11 and the inner layer 12, the sphere 49 moves to the bulging portion 46. At this time, the sphere 49 is pressed against the bottom surface of the bulging portion 46 so as to close the air hole 45. Since the air holes 45 are formed with slits (gap) radially at equal intervals, air flows from here. Easily flows in.

FIG. 11 shows another example of the check valve, and FIG. 12 shows its attached state. The check valve 51 of this example includes a shaft portion 52 inserted into the air introduction hole 13, a lid portion 53 having a larger cross-sectional area than the shaft portion 52, and a check valve 51 that prevents the check valve 51 from entering the outer layer 11. And a stop 54. The locking part 54 includes a bridge part 55 coupled to the shaft part 52 and support parts 56 provided at both ends thereof. In a state where the check valve 51 is attached to the air introduction hole 13, the lid portion 53 blocks the air introduction 13 due to the elastic force of the bridge portion 55, and air flows in and out between the outer layer 11 and the inner layer 12. There is nothing. When a negative pressure is generated between the outer layer 11 and the inner layer 12, a force directed inward acts on the lid portion 53, the bridge portion 55 is bent, and the air introduction hole 13 is opened.

In any form, the seal 14 is affixed and peeled off for use. Therefore, it is preferable to use an easy peel type seal for the seal 14. FIG. 13 shows a configuration example of the seal 14. In this example, the seal 14 has a two-layer structure of a base material layer 14a and an easy peel layer 14b.

Any film can be used for the base material layer 14a, and an optimal film may be selected depending on the application. For example, when strong barrier properties against water vapor and oxygen are required, nylon (trade name) film, polyethylene terephthalate (PET) film, polypropylene film, etc. with aluminum vapor deposition, silica vapor deposition or alumina vapor deposition are applied. Nylon (trade name) film, polyethylene terephthalate (PET) film, polypropylene film and the like can be used. When low to moderate barrier properties against water vapor and oxygen are required, a nylon (trade name) film coated with vinylidene chloride, a polyethylene terephthalate (PET) film, a polypropylene film, or the like can be used.

The easy peel layer 14b may be of any peeling type such as a cohesive peeling type, an interface peeling type, or an interlayer peeling type. The cohesive peeling type can be realized by, for example, a polypropylene resin or polyethylene resin layer and a mixed resin layer thereof, and the peel strength can be adjusted by polymer blending. The interfacial peeling type can be formed of ethylene-vinyl alcohol and an adhesive material, and the peel strength can be adjusted by selecting the adhesive material. The delamination type is configured by laminating an intermediate layer and an adhesive layer, and the peel strength is adjusted by adjusting the interlayer adhesive force between the adhesive layer and the intermediate layer.

As a method for attaching the seal 14, methods such as thermal welding, ultrasonic welding, and impulse welding can be employed. Specifically, first, after forming the container body 2, the air introduction hole 13 is formed in the outer layer 11, and the outer layer 11 and the inner layer 12 are preliminarily separated. After the preliminary peeling, the entire circumference is peeled off, the inner layer 12 is restored, a leak check is performed, and the seal 14 is welded. When welding the seal 14, the seal 14 is affixed to the protrusion 31 using a welding rod 61 as shown in FIG. 14.

The air introduction part can also be formed in the pinch-off part of the bottom part 4 of the container body 2. In the container body 2 that is blow-molded by laminating the outer layer 11 and the inner layer 12, a pinch-off portion 15 is formed on the bottom 4 as shown in FIG. This pinch-off portion 15 is formed by heating and melting the inner layer 12 in the process of blow molding the container body 2 and is in a completely sealed state, so that air enters the inner layer 12 from here. Never do. At this time, as shown in FIG. 3B, if a slit 16 is provided between the outer layer 11 and the inner layer 12 facing the pinch-off portion 15, air can enter from here. That is, the slit 16 serves as an air introduction part.

Next, the usage pattern of the infusion container 1 of this embodiment will be described. Since the infusion container 1 of this embodiment has a self-supporting property, it can be stored in a self-supporting manner during storage. Moreover, when performing infusion etc. using the infusion container 1 of this embodiment, as shown in FIG. 4, the suspension part 8 is latched to an infusion stand etc., and the opening | mouth part 3 is installed facing downward.

Next, the needle 22 provided at the tip of the drip line 21 is pierced through the cap 5 of the mouth portion 3, penetrates the cap 5, peels off the label 14, and opens the air introduction hole 13 provided in the outer layer 11. As a result, air enters between the outer layer 11 and the inner layer 12, and the inner layer 12 can shrink while being peeled from the outer layer 11, and the dropping of the chemical solution P in the inner layer 12 is started. The drug solution P in the inner layer 12 is dropped in a chamber 23 provided in the middle of the drip line 21 to remove minute bubbles and the like and administered into the body.

The infusion container of the present invention having the above-described configuration has many advantages over conventional infusion bottles, infusion bags, and the like. First, the infusion container of the present invention can be a self-supporting infusion bottle by using a relatively rigid resin material for the outer layer, and is easy to store. Further, since the chemical solution is dropped by the inner layer being deflated, an air needle at the time of drip is unnecessary, and there is no need to provide a head space. The head space is a space provided in the bottle, and since oxidation of the chemical solution by oxygen contained in the air becomes a problem, gas replacement is usually performed with an inert gas. Although gas replacement takes time and causes a decrease in productivity, an increase in manufacturing cost, and the like, in the infusion container of the present invention, it is not necessary to provide a head space, so gas replacement is also unnecessary.

Furthermore, by mixing additives such as UV absorbers in the outer layer and using resin materials with excellent oxygen barrier properties, the UV absorption function and oxygen barrier properties can be avoided without adversely affecting the chemical solution contained in the inner layer. Etc., and packaging with an exterior material, use of an oxygen scavenger, etc. are unnecessary.

As mentioned above, although embodiment which applied this invention has been described, it cannot be overemphasized that this invention is not what is limited to the above-mentioned embodiment, A various change can be added in the range which does not deviate from the summary of this invention. It is.

For example, in the above-described embodiment, the outer layer 11 is formed of a rigid resin material and is a bottle-type infusion container, but the outer layer 11 is also formed of a flexible film-like resin material and, like a so-called infusion bag, A film-type infusion container is also possible.

DESCRIPTION OF SYMBOLS 1 Infusion container 2 Container main body 3 Mouth part 4 Bottom part 5 Cap 6 Neck part 7 Rib 8 Hanging part 11 Outer layer 12 Inner layer 13 Air introduction hole 14 Seal 15 Pinch-off part 16 Slit

Claims

An infusion container comprising an outer layer in contact with the outside air and an inner layer that is detachably laminated with respect to the outer layer, and having a mouth at one end and a bottom at the other end,
The inner layer contains a chemical solution,
The outer layer is provided with an air introduction part,
An infusion container characterized in that the mouth portion is directed downward, air is circulated between the outer layer and the inner layer from the air introduction portion, and the drug solution in the inner layer is dropped.
2. The infusion container according to claim 1, wherein the outer layer contains an ultraviolet absorber.
The infusion container according to claim 1 or 2, wherein the outer layer contains an ethylene-vinyl alcohol copolymer.
The said air introduction part is formed by forming a hole part in the said outer layer, is obstruct | occluded by sticking a label, and is open | released by peeling a label, Any one of Claim 1 to 3 characterized by the above-mentioned. The infusion container according to claim 1.
The infusion container according to any one of claims 1 to 3, wherein the air introduction part is formed in a pinch-off part formed in the bottom part.
The infusion container according to any one of claims 1 to 5, wherein the outer layer is formed of a rigid resin material and has a bottle shape.
The infusion container according to any one of claims 1 to 5, wherein the inner layer and the outer layer are both film-like.