JP7082483B2 - Double container - Google Patents

Description

The present invention has an inner layer having a filling space for accommodating the contents, an outer layer having flexibility and accommodating the inner layer inside, and a spout leading to the filling space at the mouth of the outer layer. It relates to a double container provided with a pouring cap to be attached, and particularly to a double container suitable for accommodating relatively viscous contents.

In recent years, in a container in which a pouring cap is attached to a container body for accommodating contents, for example, as shown in Patent Document 1, a double container (derami container) in which the container body is composed of an inner layer body and an outer layer body. , Also called a laminated peeling container) is used. A flexible outer layer is used for this type of container, and the outer layer is provided with a vent for taking in air in an internal space located between the outer layer and the inner layer. Inside the pouring cap, there is a check valve such as a three-point valve that closes the opening leading to the inner layer, and after pouring, the contents accumulated around the spout are pulled back by moving toward the inner layer side. A spherical valve is provided.

According to the double container having such a structure, the internal space is pressurized by pressing the outer layer body, whereby the pressure in the filling space is increased and the contents can be poured out. Further, if the pressure on the outer layer body is released, the internal space is depressurized as the outer layer body is restored, so that air is introduced from the vent to the inner space and only the inner layer body can be reduced in volume and deformed. That is, there is an advantage that the independence of the container is maintained even if the contents are reduced. In addition, the contents can be poured out without replacing with the outside air, and the contents can be prevented from being exposed to the outside air by a check valve such as a three-point valve, so that the contained contents can be discharged. There is also the advantage that quality deterioration is unlikely to occur. For this reason, this type of container is being widely used as a container suitable for storing seasonings such as soy sauce and cosmetics such as lotion.

Japanese Unexamined Patent Publication No. 2013-151316

By the way, when a relatively highly viscous material such as a medium-concentrated sauce or a conditioner is used as the content to be stored in such a double container, the three-point valve separated from the valve seat at the time of pouring is used as the basis. The contents could be exposed to the outside air without returning. In addition, when pouring out the contents, the outer layer had to be pressed relatively strongly. Further, the spherical valve moves toward the outside when the contents are poured, and pulls back the contents by moving toward the inside of the inner layer after the pouring. In some cases, it was not possible to return to the original position, and the contents accumulated around the spout were not pulled back and dripping.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a double container that can be suitably used even when accommodating relatively highly viscous contents. And.

The present invention has an inner layer that is deformable in volume and has a filling space for accommodating the contents, and has flexibility, and the inner layer is housed inside to create an internal space between the inner layer. A double container having an outer layer body having a vent leading to the inner space and a pouring cap having a spout port leading to the filling space and being attached to the mouth of the outer layer body.
The pouring cap is
A pouring cap body having a top wall with the spout and
A top wall provided inside the pouring cap body and located above the mouth, a lower opening protruding from the top wall toward the back surface of the top wall, and a lower opening opening toward the filling space. An inner plug with a tubular wall with an upper opening leading to the spout, and
It is movably arranged inside the tubular wall and closes the lower opening when moving toward the lower opening, while opening the lower opening when moving toward the upper opening and the cylinder. A moving valve for pouring out the contents of the filling space from the spout through the wall is provided.
The cylindrical wall has a lower inner peripheral surface that shrinks in diameter toward the lower opening.
The moving valve has a main body portion having a lower outer peripheral surface parallel to the lower inner peripheral surface, and a plurality of ribs extending upward from the main body portion and provided at intervals in the circumferential direction. It is a double container with.
Further, in the present invention, there is an internal space between an inner layer body that is deformable in volume and has a filling space for accommodating the contents, and an inner layer body that is flexible and contains the inner layer body inside. A double container having an outer layer body having a vent leading to the inner space and a pouring cap having a spout port leading to the filling space and being attached to the mouth of the outer layer body.
The pouring cap is
A pouring cap body having a top wall with the spout and
A top wall provided inside the pouring cap body and located above the mouth, a lower opening protruding from the top wall toward the back surface of the top wall, and a lower opening opening toward the filling space. An inner plug with a tubular wall with an upper opening leading to the spout, and
It is movably arranged inside the tubular wall and closes the lower opening when moving toward the lower opening, while opening the lower opening when moving toward the upper opening and the cylinder. A moving valve for pouring out the contents of the filling space from the spout through the wall is provided.
The cylindrical wall has a lower inner peripheral surface that shrinks in diameter toward the lower opening.
The moving valve has a main body portion having a lower outer peripheral surface parallel to the lower inner peripheral surface, an annular portion located above the main body portion, and a circumferential spacing between the main body portion and the annular portion. It is also a double container having a plurality of connecting portions that are connected by opening.
Further, in the present invention, there is an internal space between an inner layer body that is deformable in volume and has a filling space for accommodating the contents, and an inner layer body that is flexible and contains the inner layer body inside. A double container having an outer layer body having a vent leading to the inner space and a pouring cap having a spout port leading to the filling space and being attached to the mouth of the outer layer body.
The pouring cap is
A pouring cap body having a top wall with the spout and
A top wall provided inside the pouring cap body and located above the mouth, a lower opening protruding from the top wall toward the back surface of the top wall, and a lower opening opening toward the filling space. An inner plug having a tubular wall having an upper opening leading to the spout and an inner plug annular wall provided at a distance from the tubular wall on the radial outer side of the tubular wall .
It is movably arranged inside the tubular wall and closes the lower opening when moving toward the lower opening, while opening the lower opening when moving toward the upper opening and the cylinder. A moving valve for pouring out the contents of the filling space from the spout through the wall is provided.
The outer layer body has the vent at the mouth, and has the vent.
The pouring cap main body has an outer peripheral wall that is connected to the top wall and has a passage that surrounds the mouth and leads to the ventilation port, and outside air that penetrates the top wall and leads to the passage. It has an inlet and
The pouring cap is cylindrical and has a base inserted between the tubular wall and the inner plug annular wall and supported by the tubular wall and the inner plug annular wall, and a radial outer side of the base. The donut plate-shaped portion is provided with an elastically deformable donut plate-shaped portion, and the outer edge portion of the donut plate-shaped portion is seated on the back surface of the top wall at least when the internal space is pressurized due to pressing against the outer layer body. While closing the outside air introduction port, when the internal space is depressurized due to the restoration of the outer layer body, the outer edge portion of the donut plate-shaped portion separates from the top wall and is delayed in closing the lower opening by the moving valve. It is also a double container having an air valve that opens the outside air introduction port.

The tubular wall preferably has an upper inner peripheral surface having an inner diameter larger than the maximum diameter of the lower inner peripheral surface.

In the double container of the present invention, the three-point valve that has conventionally used the top wall of the inner plug as a valve seat is abolished, while the top wall protrudes toward the back surface of the top wall of the pouring cap body and has a filling space. A cylindrical wall with a lower opening that opens toward the bottom and an upper opening leading to the spout is provided, and inside the tubular wall, the lower opening is closed when moving toward the lower opening, while the upper opening is closed. When moving toward, the lower opening is opened, and a moving valve is provided to allow the contents of the filling space to be discharged from the spout through the cylindrical wall. That is, since the three-point valve is supported by a narrow connecting piece, the connecting piece may be deformed and cannot be returned when a relatively viscous content is poured out, but such a mobile valve. Since there is no risk of deformation, even highly viscous contents can be prevented from being exposed to the outside air. In addition, the mobile valve moves toward the upper opening during pouring, while it moves toward the lower opening after pouring, so the contents accumulated around the spout should be pulled back to prevent dripping of the contents. Can be done.

The cylindrical wall may have a constant inner diameter on the inner peripheral surface of the lower part, but when the diameter is reduced toward the lower opening, the inner circumference of the lower part as the moving valve moves toward the upper opening. The gap between the surface and the moving valve becomes large. As a result, it is possible to suppress the pressing force applied to the outer layer even if the content has a relatively high viscosity.

Further, when the diameter of the lower inner peripheral surface of the cylindrical wall is reduced toward the lower opening in this way, the lower outer peripheral surface of the mobile valve is also configured to be parallel to this, so that the diameter is reduced toward the lower opening. Since the contact area between the moved mobile valve and the cylindrical wall is increased, it is possible to more reliably prevent the problem that the contents are exposed to the outside air.

The inner diameter of the upper inner peripheral surface of the tubular wall may be equal to the maximum diameter of the lower inner peripheral surface, but if it is configured to be larger than the maximum diameter of the lower inner peripheral surface, the inner peripheral surface of the upper portion may be formed. Since the gap between the peripheral surface and the moving valve becomes larger, even relatively highly viscous contents can easily pass through, and the pressing force applied to the outer layer can be further suppressed.

Then, when the internal space is pressed against the outer layer at least by pressing the injection cap, the injection cap sits on the back surface of the top wall of the main body to close the outside air introduction hole, while the inside is restored due to the restoration of the outer layer. When the air valve that opens the outside air introduction hole is provided after the closing of the lower opening by the mobile valve when the space is depressurized, when the outer layer is restored, the contents stored in the spout are first pulled back. Therefore, it is possible to prevent the contents from dripping more reliably.

It is sectional drawing in the side view which showed the periphery of the pouring cap about one Embodiment of the double container according to this invention. (A) is a plan view of the mobile valve shown in FIG. 1, (b) is a cross-sectional view taken along the line AA of (a), and (c) shows a modified example of the mobile valve. It is a plan view, and (d) is a cross-sectional view taken along the line BB of (c). It is a figure which shows the state which the lid is opened and the double container is displaced to the tilting posture. It is a figure which shows the state which the contents are poured out by pressing the outer layer body after the state shown in FIG. It is a figure which shows the state which the outer layer body started to restore after the state shown in FIG. It is a figure which shows the state which the air is taken in from the outside air introduction port after the state shown in FIG.

Hereinafter, an embodiment of the double container according to the present invention will be described with reference to FIG. In the present specification and the like, the "up" direction and the "down" direction are states in which the outer layer body (reference numeral 2) is located below and the lid body (reference numeral 8) is located above as shown in FIG. The direction in.

The double container of the present embodiment includes an inner layer body 1, an outer layer body 2, a pouring cap 3 (composed of an inner plug 4, an air valve 5, a pouring cap main body 6, and a moving valve 7), and a lid body 8. I have.

The inner layer 1 is provided with a filling space S inside which the contents can be accommodated. The inner layer 1 of the present embodiment is made of a thin synthetic resin and is provided so as to be deformable in volume reduction.

The outer layer body 2 includes a tubular mouth portion 2a extending along the central axis O. In the mouth portion 2a of the present embodiment, the lower portion 2c is formed to have a larger diameter than the upper portion 2b whose upper end is open. Further, a male screw portion 2d is provided on the outer peripheral surface of the upper portion 2b. Further, the upper portion 2b is provided with a vent 2e that penetrates the upper portion 2b in the radial direction, and the outer peripheral surface through which the vent 2e opens has a notch extending in the vertical direction to divide the male screw portion 2d. 2f is provided. Although not shown, a cylindrical body portion and a bottom portion that closes the lower end of the body portion are provided below the mouth portion 2a. Further, the outer layer body 2 of the present embodiment is made of synthetic resin, and the body portion has flexibility.

Further, an internal space N leading to the vent 2e is formed between the inner layer 1 and the outer layer 2.

The inner layer 1 and the outer layer 2 in the present embodiment are made by laminating synthetic resins having low compatibility with each other so as to be peelable. As the synthetic resin constituting the inner layer 1, a nylon resin (PA), an ethylene vinyl alcohol copolymer resin (EVOH), or a modified polyolefin resin (for example, “Admer” (registered trademark) manufactured by Mitsui Chemicals Co., Ltd.) shall be adopted. Can be done. Further, as the synthetic resin constituting the outer layer body 2, for example, polyethylene resin (PE) such as low density polyethylene (LDPE) and high density polyethylene resin (HDPE) can be adopted. Such an inner layer 1 and an outer layer 2 can be obtained by blow molding a parison in which a synthetic resin material forming the inner layer 1 and a synthetic resin material forming the outer layer 2 are laminated. In addition, a test tubular preform in which the synthetic resin material of the inner layer 1 and the synthetic resin material of the outer layer 2 are laminated is prepared, and this preform is formed by biaxial stretch blow molding, or the inner layer is formed. It is also possible to use a body in which the body and the outer layer are individually formed, and then the inner layer is arranged inside the outer layer. Further, although not shown, one or a plurality of adhesive bands extending vertically to partially join the inner layer 1 and the outer layer 2 between the inner layer 1 and the outer layer 2. May be provided.

The inner plug 4 includes a top wall 4a located above the mouth portion 2a. At the central portion of the top wall 4a, a cylindrical wall 4b that protrudes upward from the top wall 4a and also protrudes downward is provided. Here, the tubular wall 4b is provided so that the upper end thereof is located near the back surface of the top wall of the ejection cap main body 6, which will be described later. Further, the upper end of the cylindrical wall 4b is open (referred to as an upper opening 4c) and leads to a pouring outlet of the pouring cap main body 6 described later. Further, the lower end of the tubular wall 4b is open (referred to as a lower opening 4d) and leads to the filling space S. The lower inner peripheral surface 4e of the tubular wall 4b is formed in a conical shape with a diameter reduced toward the lower opening 4d. Further, the upper inner peripheral surface 4f of the tubular wall 4b is connected to a step portion 4g extending radially outward from the upper end of the lower inner peripheral surface 4e, and the inner diameter thereof is the maximum diameter of the lower inner peripheral surface 4e (inside the lower part). It is larger than the inner diameter of the upper end of the peripheral surface 4e).

On the upper surface of the top wall 4a, an inner plug annular wall 4h provided at intervals with respect to the cylindrical wall 4b and an outer edge wall 4j provided at the outer edge portion of the top wall 4a are provided. Further, the outer edge portion of the top wall 4a and the outer edge wall 4j are provided with a notch 4k that cuts them out and penetrates the inside and outside in the radial direction. An annular seal wall 4m that is in close contact with the inner layer 1 is provided on the lower surface of the top wall 4a. The inner plug 4 of the present embodiment is made of a synthetic resin such as polypropylene (PP).

The air valve 5 has a cylindrical shape centered on the central axis O, and has a base portion 5a whose lower end is supported by a tubular wall 4b and an inner plug annular wall 4h. On the radial outer side of the base portion 5a, a thin-walled portion 5b having a substantially donut plate shape and elastically deformable is provided. Here, to explain the thin-walled portion 5b of the present embodiment in more detail, the inner edge portion is integrally connected to the base portion 5a, the middle portion is curved so as to be convex downward, and the outer edge portion is bent downward. It is bent. Further, the air valve 5 of the present embodiment is made of a soft material such as rubber, an elastomer, or soft polyethylene (low density polyethylene).

The injection cap main body 6 is integrally connected to the top wall 6a located above the air valve 5 and the outer edge of the top wall 6a, surrounds the mouth portion 2a, and the lower end portion airtightly contacts the lower portion 2c. It is equipped with 6b. Further, a female threaded portion 6c suitable for the male threaded portion 2d is provided on the inner peripheral surface of the outer peripheral wall 6b. The pouring cap body 6 of the present embodiment is made of synthetic resin.

At the center of the top wall 6a, a spout 6d penetrating the top wall 6a is provided. Further, on the upper surface of the top wall 6a, a pouring cylinder 6e is provided which surrounds the pouring outlet 6d and has an upper end curved outward in the radial direction to form a lip. Further, on the lower surface of the top wall 6a, an inner annular wall 6f located radially inside the base 5a and an outer annular wall 6g located radially outside the base 5a are provided, whereby the upper end of the base 5a is provided. I support the club. Further, a valve seat portion 6h is provided on the radial outer side of the outer annular wall 6g so as to project downward and abut with the thin-walled portion 5b of the air valve 5.

Further, the top wall 6a is provided with an outside air introduction port 6j penetrating the front and back surfaces thereof. Here, between the outside air introduction port 6j and the ventilation port 2e, the space formed between the top wall 4a and the top wall 6a passes through the notch 4k, and between the mouth portion 2a and the outer peripheral wall 6b. , The notch 2f, or the passage T via the spiral gap formed between the male threaded portion 2d and the female threaded portion 6c is provided. The passage T allows air taken in from the outside air introduction port 6j to pass through, and the provision of the notch 2f facilitates the flow of air passing through the passage T, but this may be omitted. Further, the outer edge portion of the top wall 6a is provided with a convex portion 6k protruding outward in the radial direction.

The moving valve 7 is movably arranged between the upper opening 4c and the lower opening 4d inside the tubular wall 4b. The mobile valve 7 of the present embodiment includes a main body portion 7a forming a base of the mobile valve 7. The main body portion 7a has a shape in which the diameter is reduced upward and the diameter is reduced even when the diameter is lowered. The outer surface whose diameter is reduced downward is referred to as a lower outer peripheral surface 7b. Here, the lower outer peripheral surface 7b is formed in a conical surface shape parallel to the lower inner peripheral surface 4e. Further, the main body portion 7a is provided with a plurality of ribs 7c extending upward and provided at intervals in the circumferential direction. As shown in FIGS. 2A and 2B, a total of 6 ribs 7c of the present embodiment are provided at equal intervals. Further, on the outer peripheral surface of the rib 7c, the portion having the largest outer diameter is slightly smaller than the inner diameter of the upper inner peripheral surface 4f, and the maximum diameter of the lower inner peripheral surface 4e (the lower inner peripheral surface 4e). It is formed with an outer diameter larger than the inner diameter of the upper end).

The lid 8 includes an upper wall 8a located above the top wall 6a and a lid outer peripheral wall 8b integrally connected to the upper wall 8a.

On the lower surface of the upper wall 8a, a seal cylinder 8c that is inserted inside the pouring cylinder 6e and that is in airtight contact with the pouring outlet 6d is provided.

The inner peripheral surface of the outer peripheral wall 8b of the lid is provided with an engaging recess 8d that engages with the convex portion 6k and maintains the lid 8 in a closed state. Further, on the outer peripheral surface of the outer peripheral wall 8b of the lid, a hinge portion 8e that is integrally connected to the outer peripheral wall 6b of the pouring cap main body 6 is provided. Although the lid 8 of the present embodiment is integrally connected to the pouring cap main body 6, it is provided separately from the pouring cap main body 6 and can be attached to and detached from the pouring cap main body 6 by a screw or an undercut. It may be attached to.

Such a double container is particularly suitable for accommodating relatively highly viscous contents (for example, a viscosity of 870 mPa · s or more) such as a medium-concentrated sauce.

Next, the situation where the contents are poured out from the above-mentioned double container will be described.

First, as shown in FIG. 3, with the lid 8 open, the outer layer 2 is displaced to a tilted posture, and the body of the outer layer 2 is further pressed. As a result, the internal space N is pressurized and the pressure in the filling space S increases, so that the mobile valve 7 moves toward the upper opening 4c together with the contents as shown in FIG. Then, the content that has entered the inside of the tubular wall 4b from the lower opening 4d passes through the upper opening 4c through the space between the adjacent ribs 7c, and is poured out from the outlet of the pouring cylinder 6e via the pouring outlet 6d. Is done. Here, since the inner diameter of the lower inner peripheral surface 4e of the present embodiment increases toward the upper opening 4c, the lower inner peripheral surface 4e and the moving valve 7 as the mobile valve 7 moves toward the upper opening 4c. The gap between the and is large. Therefore, even if the content has a relatively high viscosity, the flow resistance in the gap is suppressed, so that the content can be poured out without applying a so large pressing force to the outer layer 2. Further, when the moving valve 7 further moves and the lower outer peripheral surface 7b approaches the upper inner peripheral surface 4f as shown in FIG. 4, the inner diameter of the upper inner peripheral surface 4f is larger than the maximum diameter of the lower outer peripheral surface 7b. Therefore, the flow resistance of the contents is low, and the force for pressing the outer layer 2 can be suppressed. Since the rib 7c suppresses the inclination of the moving valve 7 in the tubular wall 4b, it is possible to prevent the moving valve 7 from being caught in the middle of the tubular wall 4b and getting stuck.

Then, when the pressure on the outer layer body 2 is released as shown in FIG. 5, the flexible outer layer body 2 begins to be restored, and the internal space N is depressurized accordingly, and the inner layer body 1 also begins to be restored. As a result, the contents that have entered the inside of the tubular wall 4b are pulled back to the filling space S, so that the contents stored inside the ejection cylinder 6e are also pulled back, and the moving valve 7 also moves to the lower opening 4d side. start.

Then, as shown in FIG. 6, when the mobile valve 7 abuts on the lower opening 4d and the pulling back of the contents is stopped, the pressure reduction of the internal space N progresses due to the further restoration of the outer layer body 2, thereby causing the outside air introduction port 6j to reduce the pressure. The taken-in air elastically deforms the thin-walled portion 5b to separate it from the valve seat portion 6h, and is taken into the pouring cap main body 6. In order to give priority to the restoration of the inner layer 1 over the elastic deformation of the thin portion 5b in the restoration of the outer layer 2, for example, the thickness and shape of the thin portion 5b can be adjusted. It is possible. Then, the taken-in air reaches the ventilation port 2e through the passage T and is further introduced into the inner space N, so that the outer layer body 2 can be restored while the inner layer body 1 is reduced in volume and deformed.

In the state of FIG. 6, the lower outer peripheral surface 7b of the mobile valve 7 is in close contact with the lower inner peripheral surface 4e to prevent outside air from entering the filling space S, and the contents remaining on the tubular wall 4b are also included. Since it prevents outside air from entering the filling space S, the quality of the contents contained in the inner layer 1 can be maintained at a high level. Further, since the moving valve 7 closes the lower opening 4d after pulling back the contents stored inside the dispensing cylinder 6e, it is possible to effectively prevent dripping from the dispensing cylinder 6e.

By the way, the mobile valve 7 described above may be as shown in FIGS. 2 (c) and 2 (d). The illustrated mobile valve 9 includes a main body portion 9a having a shape that reduces the diameter downward. Further, the lower outer peripheral surface 9b of the main body 9a is formed in a conical shape parallel to the lower inner peripheral surface 4e, similarly to the lower outer peripheral surface 7b described above. Further, an annular annular portion 9c is provided above the main body 9a, and a plurality of connecting portions 9d for connecting the annular portions 9a and the annular portion 9c are provided at intervals in the circumferential direction. Has been done. A total of four connecting portions 9d of the present embodiment are provided at equal intervals.

Although not shown, even in a double container provided with a mobile valve 9 instead of the mobile valve 7, the lower outer peripheral surface 9b is in close contact with the lower inner peripheral surface 4e, and the contents are the adjacent connecting portions 9d. It can flow through the gap, and the annular portion 9c can prevent the mobile valve 9 from tilting in the tubular wall 4b and getting caught in the middle, so that the same effect as the mobile valve 7 described above can be obtained. Is.

Although the present invention has been described above while showing specific embodiments, the double container according to the present invention is not limited to the above-described embodiment, and various modifications may be made within the scope of the claims. included. For example, the vent for introducing air into the internal space is not limited to the one provided at the mouth of the outer layer, and may be provided at the bottom of the outer layer or at the body. In that case, the position where the air valve is provided may be changed as appropriate. Further, for example, by appropriately selecting the gap of the passage through which the air leads to the vent, it is possible to realize the above-mentioned function without using the air valve.

1: Inner layer 2: Outer layer 2a: Mouth 2b: Upper part 2c: Lower part 2d: Male thread 2e: Vent 2f: Notch 3: Dispensing cap 4: Inner plug 4a: Top wall 4b: Cylindrical wall 4c: Upper opening 4d: Lower opening 4e: Lower inner peripheral surface 4f: Upper inner peripheral surface 4g: Step 4h: Inner plug annular wall 4j: Outer edge wall 4k: Notch 4m: Seal wall 5: Air valve 5a: Base 5b : Thin wall part 6: Outlet cap body 6a: Top wall 6b: Outer wall 6c: Female thread part 6d: Outlet 6e: Outlet cylinder 6f: Inner annular wall 6g: Outer annular wall 6h: Valve seat portion 6j: Outside air introduction port 6k: Convex part 7: Mobile valve 7a: Main body part 7b: Lower outer peripheral surface 7c: Rib 8: Lid body 8a: Upper wall 8b: Lid body outer peripheral wall 8c: Seal cylinder 8d: Engagement recess 8e: Hinge part 9: Mobile valve 9a: Main body 9b: Lower outer peripheral surface 9c: Circular portion 9d: Connecting portion N: Internal space S: Filling space T: Passage

Claims (4)

A volume-reducing deformable inner layer having a filling space for accommodating the contents, and a flexible inner layer having an internal space between the inner layer and the inner layer. A double container having an outer layer body having a vent leading to the space and a pouring cap having a spouting port leading to the filling space and being attached to the mouth of the outer layer body.
The pouring cap is
A pouring cap body having a top wall with the spout and
A top wall provided inside the pouring cap body and located above the mouth, a lower opening protruding from the top wall toward the back surface of the top wall, and a lower opening opening toward the filling space. An inner plug with a tubular wall with an upper opening leading to the spout, and
It is movably arranged inside the tubular wall and closes the lower opening when moving toward the lower opening, while opening the lower opening when moving toward the upper opening and the cylinder. A moving valve for pouring out the contents of the filling space from the spout through the wall is provided.
The cylindrical wall has a lower inner peripheral surface that shrinks in diameter toward the lower opening.
The moving valve has a main body portion having a lower outer peripheral surface parallel to the lower inner peripheral surface, and a plurality of ribs extending upward from the main body portion and provided at intervals in the circumferential direction. Double container with. A volume-reducing deformable inner layer having a filling space for accommodating the contents, and a flexible inner layer having an internal space between the inner layer and the inner layer. A double container having an outer layer body having a vent leading to the space and a pouring cap having a spouting port leading to the filling space and being attached to the mouth of the outer layer body.
The pouring cap is
A pouring cap body having a top wall with the spout and
A top wall provided inside the pouring cap body and located above the mouth, a lower opening protruding from the top wall toward the back surface of the top wall, and a lower opening opening toward the filling space. An inner plug with a tubular wall with an upper opening leading to the spout, and
It is movably arranged inside the tubular wall and closes the lower opening when moving toward the lower opening, while opening the lower opening when moving toward the upper opening and the cylinder. A moving valve for pouring out the contents of the filling space from the spout through the wall is provided.
The cylindrical wall has a lower inner peripheral surface that shrinks in diameter toward the lower opening.
The moving valve has a main body portion having a lower outer peripheral surface parallel to the lower inner peripheral surface, an annular portion located above the main body portion, and a circumferential spacing between the main body portion and the annular portion. A double container having a plurality of connecting portions to be connected by opening. The double container according to claim 1 or 2, wherein the cylindrical wall has an upper inner peripheral surface having an inner diameter larger than the maximum diameter of the lower inner peripheral surface. A volume-reducing deformable inner layer having a filling space for accommodating the contents, and a flexible inner layer having an internal space between the inner layer and the inner layer. A double container having an outer layer body having a vent leading to the space and a pouring cap having a spouting port leading to the filling space and being attached to the mouth of the outer layer body.
The pouring cap is
A pouring cap body having a top wall with the spout and
A top wall provided inside the pouring cap body and located above the mouth, a lower opening protruding from the top wall toward the back surface of the top wall, and a lower opening opening toward the filling space. An inner plug having a tubular wall having an upper opening leading to the spout and an inner plug annular wall provided at a distance from the tubular wall on the radial outer side of the tubular wall .
It is movably arranged inside the tubular wall and closes the lower opening when moving toward the lower opening, while opening the lower opening when moving toward the upper opening and the cylinder. A moving valve for pouring out the contents of the filling space from the spout through the wall is provided.
The outer layer body has the vent at the mouth, and has the vent.
The pouring cap main body has an outer peripheral wall that is connected to the top wall and has a passage that surrounds the mouth and leads to the ventilation port, and outside air that penetrates the top wall and leads to the passage. It has an inlet and
The pouring cap is cylindrical and has a base inserted between the tubular wall and the inner plug annular wall and supported by the tubular wall and the inner plug annular wall, and a radial outer side of the base. The donut plate-shaped portion is provided with an elastically deformable donut plate-shaped portion, and the outer edge portion of the donut plate-shaped portion is seated on the back surface of the top wall at least when the internal space is pressurized due to pressing against the outer layer body. While closing the outside air introduction port, when the internal space is depressurized due to the restoration of the outer layer body, the outer edge portion of the donut plate-shaped portion separates from the top wall and is delayed in closing the lower opening by the moving valve. A double container having an air valve that opens the outside air inlet.

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