JP6741964B2 - Container with cap - Google Patents

Description

The present invention relates to a capped container, and more particularly to a novel capped container hermetically sealed by a sealing member.

Conventionally, a container body that has an outer layer container and an inner bag and in which the inner bag shrinks as the contents decrease, and an air space between the intermediate space between the outer layer container and the inner bag and the outer space of the container body. A double container (a so-called laminated peeling container) provided with a check valve for controlling entrance and exit is known (for example, refer to Patent Documents 1 and 2).

In the laminated peeling container disclosed in Patent Document 1, a valve is built in a cap attached to the opening of the container body. In the laminated separation container disclosed in Patent Document 2, a valve is provided inside the body of the outer shell.

In addition, the laminated peeling container has the advantage that the contents in the inner bag do not come into contact with air. Therefore, after pouring out the contents, a check valve is attached to the cap to prevent air from flowing back into the inner bag. It has also been proposed that the mouth be sealed with aluminum in order to ensure hermeticity during storage.

For example, in Patent Document 3, from a container main body having a mouth portion having an opened upper portion and a storage space for contents therein, and a spout which is detachably attached to the mouth portion and communicates with the storage space. Disclosed is a pouring container having a pouring cap for pouring out contents and having a sealing sheet that covers the top surface of the mouth portion and seals the accommodation space.

JP, 2013-35557, A JP-A-4-267727 JP, 2014-129125, A

By the way, in the case of the dispensing container described in Patent Document 3, the dispensing cap is configured to include a holding unit that holds the dispensing cap at a position above the position where the attachment to the mouth is completed, As a holding means, the stopper is connected to the outer peripheral wall of the spout cap surrounding the mouth via the weakened portion, and the stopper is brought into contact with the shoulder portion connected to the mouth at the upper position.

However, in the structure in which the spout cap is directly screwed into the mouth of the container and the stopper is brought into contact with the shoulder of the container, the stopper is provided at a position close to the shoulder, so the stopper is difficult to remove. There is a problem. The stopper is difficult to pinch and tear off near the shoulder.

Further, for example, when the shoulder portion is an inclined surface, the contact state of the stopper becomes unstable, the stopper is cut accidentally, the pouring cap advances unintentionally and breaks through the aluminum seal, etc. May cause trouble.

Furthermore, in the configuration where the spout cap molded as a single part is screwed directly into the mouth of the container and the stopper is brought into contact with the shoulder of the container, it is necessary to change the size of the spout cap depending on the length of the spout. Therefore, there is a possibility that it may be inconvenient to deal with various kinds of containers and that the pouring cap may be enlarged.

The present invention has been made in view of such conventional circumstances, and an object thereof is to provide a novel container with a cap that can solve the above-mentioned inconvenience.

In order to achieve the above-mentioned object, the container with a cap of the present invention is a double container that has an outer layer container and an inner bag, and the inner bag shrinks as the content of the inner bag decreases. There, with the mouth portion is sealed by the sealing member, the mouth portion and the fixed portion threaded cap screwed on the outer peripheral surface is formed is attached by capping, the fixing portion is annular The stopper part of which is coupled via the easy-cutting part is locked, the cap has an inner ring and a check valve, and the stopper part engages with the fixing part. Is formed, and the cap body is attached and fixed to the fixing portion when not in use by locking the protrusion of the stopper portion to the fixing portion, and the cap is removed by cutting off the stopper portion. The inner ring contacts the inner peripheral surface of the mouth by screwing the cap onto the fixing portion after the seal member is opened.

By sealing the mouth portion with the sealing member, the airtightness during storage is surely secured. At this time, the sealing can be performed by allowing the fixed portion attached to the mouth portion and the cap to be screwed together and retracting the cap from the fixed portion by the stopper portion. Further, the user can peel off the seal member by removing the cap after cutting off the stopper portion.

In the container with a cap of the present invention, the fixed part attached to the mouth part and the screwable cap are combined, and the stopper part is locked to the fixed part. The cap does not move unintentionally and the stopper is not accidentally cut. Further, since the stopper portion is located between the cap and the fixed portion, it can be easily pinched and torn off.

Further, when the cap and the fixing portion are combined and assembled, for example, by changing the size of the fixing portion, the size of the cap can be standardized irrespective of the size of the mouth portion, and can be applied to containers of various sizes. It can be easily handled.

It is a perspective view showing one embodiment of a container with a cap of the present invention. It is a schematic perspective view of a container main body. It is a principal part schematic sectional drawing of a container main body. It is a schematic sectional drawing which shows the layer structure of an outer layer container and an inner bag. It is a figure which shows the usage method of the container with a cap of embodiment. It is a schematic sectional drawing of a cap mounting part, and is a figure of a sealing member in an unopened state. It is a schematic plan view of a stopper part. It is a figure which shows a mode that a stopper part is cut off. It is a principal part schematic perspective view which shows the state which removed the cap. It is a schematic sectional drawing of a cap mounting part, and is a figure of a sealing member in an opened state.

Hereinafter, an embodiment of a container with a cap to which the present invention is applied will be described with reference to the drawings.

As shown in FIG. 1 to FIG. 3, the container 1 with a cap of the present embodiment is mainly composed of a container main body 2, and the container main body 2 includes a storage part 3 for storing contents and a storage part 3 from the storage part 3. The mouth part 4 for discharging the contents is provided. A cap 30 is attached to the mouth 4 of the container body 2.

The container 1 with a cap of the present embodiment is a double container (so-called laminated peeling container), and as shown in FIG. 3, the container main body 2 has an outer layer container 11 that is an outer shell in the accommodation part 3 and the mouth part 4. And the inner bag 12 are provided, and the inner bag 12 contracts as the contents decrease.

The outer layer container 11 and the inner bag 12 are subjected to blow molding as a multi-layer parison and molded in an integrally joined state. As a usage pattern thereof, for example, the inner bag 12 is peeled from the outer layer container 11 before use. Then, the contents are filled until the inner bag 12 contacts the outer layer container 11. By pushing out the contents, the inner bag 12 contracts smoothly. Alternatively, the inner bag 12 may be left bonded to the outer layer container 11, and the inner bag 12 may be peeled off from the outer layer container 11 and contract as the contents are discharged.

The layer structure of the container body 2 will be further described. As described above, the container body 2 includes the outer layer container 11 and the inner bag 12, and the outer layer container 11 is thicker than the inner bag 12 so as to have high resilience. Is formed in.

The outer layer container 11 is made of, for example, low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene, ethylene-propylene copolymer and a mixture thereof. The outer layer container 11 has a single-layer structure or a multi-layer structure, and preferably contains a lubricant in at least one of the innermost layer and the outermost layer. When the outer layer container 11 has a single-layer structure, the single layer is the innermost layer and the outermost layer, so that the layer may contain a lubricant. When the outer layer container 11 has a two-layer structure, the layer on the inner surface side of the container is the innermost layer and the layer on the outer surface side of the container is the outermost layer. Therefore, at least one of them may contain a lubricant. When the outer layer container 11 is composed of three or more layers, the layer closest to the container inner surface side is the innermost layer, and the layer closest to the container outer surface side is the outermost layer.

As shown in FIG. 4, the outer layer container 11 preferably includes a repro layer 11c between the innermost layer 11b and the outermost layer 11a. The repro layer is a layer used by recycling burrs generated during the molding of the container. When the outer layer container 11 has a multi-layer structure, it is preferable to contain a lubricant in both the innermost layer and the outermost layer.

As the lubricant, those commercially available as a lubricant can be used, and any of hydrocarbon-based, fatty acid-based, aliphatic amide-based, and metal soap-based lubricants may be used, and two or more of them may be used in combination. Good. Examples of the hydrocarbon lubricant include liquid paraffin, paraffin wax, synthetic polyethylene wax and the like. Examples of the fatty acid-based lubricant include stearic acid and stearyl alcohol. Examples of the aliphatic amide lubricant include stearic acid amide, oleic acid amide, erucic acid amide fatty acid amide, methylenebisstearic acid amide, and ethylenebisstearic acid alkylene alkylene fatty acid amide. Examples of the metal soap lubricant include metal stearates and the like.

The innermost layer of the outer layer container 11 is a layer that is in contact with the inner bag 12, and the release property between the outer layer container 11 and the inner bag 12 can be improved by including a lubricant in the innermost layer of the outer layer container 11. On the other hand, the outermost layer of the outer layer container 11 is a layer that comes into contact with the mold during blow molding, and the release property can be improved by incorporating a lubricant into the outermost layer of the outer layer container 11.

One or both of the innermost layer and the outermost layer of the outer layer container 11 can be formed of a random copolymer between propylene and another monomer. As a result, the shape recoverability, transparency, and heat resistance of the outer layer container 11, which is the outer shell, can be improved.

The content of the monomer other than propylene in the random copolymer is smaller than 50 mol%, preferably 5 to 35 mol%. Specifically, the content is, for example, 5, 10, 15, 20, 25, 30 mol%, and may be within a range between any two of the numerical values exemplified here. The monomer copolymerized with propylene may be any monomer that improves the impact resistance of the random copolymer when compared with a homopolymer of polypropylene, and ethylene is particularly preferable. In the case of a random copolymer of propylene and ethylene, the content of ethylene is preferably 5 to 30 mol%, specifically, for example, 5, 10, 15, 20, 25, 30 mol%, and the numerical values exemplified here. It may be within a range between any two. The weight average molecular weight of the random copolymer is preferably 100,000 to 500,000, more preferably 100,000 to 300,000. This weight average molecular weight is, for example, 10, 15, 20, 25, 30, 35, 40, 45, 500,000, and is within a range between any two of the numerical values exemplified here. Good.

The tensile modulus of elasticity of the random copolymer is preferably 400 to 1600 MPa, and more preferably 1000 to 1600 MPa. This is because when the tensile elastic modulus is in such a range, the shape restoring property is particularly good. The tensile elastic modulus is, for example, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600 MPa, and between any two of the numerical values exemplified here. May be within the range.

If the container is excessively hard, the feeling of use of the container deteriorates. Therefore, the outer layer container 11 may be formed by mixing a random copolymer with a soft material such as linear low-density polyethylene. However, the material to be mixed with the random copolymer is preferably mixed so as to be less than 50% by weight with respect to the entire mixture so as not to significantly impair the effective properties of the random copolymer. For example, the outer layer container 11 can be made of a material in which a random copolymer and linear low-density polyethylene are mixed at a weight ratio of 85:15.

As shown in FIG. 4, the inner bag 12 includes an EVOH layer 13a provided on the outer surface side of the container, an inner layer 12b provided on the inner surface side of the EVOH layer 12a, and between the EVOH layer 12a and the inner surface layer 12b. The adhesive layer 12c is provided. By providing the EVOH layer 12a, the gas barrier property and the peelability from the outer layer container 11 can be improved.

The EVOH layer 12a is a layer made of an ethylene-vinyl alcohol copolymer (EVOH) resin and is obtained by hydrolysis of ethylene and vinyl acetate copolymer. The ethylene content of the EVOH resin is, for example, 25 to 50 mol%, and is preferably 32 mol% or less from the viewpoint of oxygen barrier properties. The lower limit of the ethylene content is not particularly specified, but the lower the ethylene content, the more easily the EVOH layer 12a becomes less flexible, and therefore the lower limit is preferably 25 mol% or more. Further, the EVOH layer 12a preferably contains an oxygen absorbent. By including the oxygen absorbent in the EVOH layer 12a, the oxygen barrier property of the EVOH layer 12a can be further improved.

The melting point of the EVOH resin is preferably higher than the melting point of the random copolymer that constitutes the outer layer container 11. The outside air introduction hole 15 is preferably formed in the outer layer container 11 by using a heating type punching device, but the outside air introduction hole is formed in the outer layer container 11 by making the melting point of the EVOH resin higher than the melting point of the random copolymer. The hole is prevented from reaching the inner bag 13 when forming 15. From this viewpoint, the larger the difference between (melting point of EVOH) and (melting point of random copolymer layer) is, the more preferable it is, preferably 15° C. or higher, and particularly preferably 30° C. or higher. This difference in melting point is, for example, 5 to 50° C., and specifically, for example, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50° C., and any of the numerical values exemplified here. It may be in the range between the two.

The inner surface layer 12b is a layer that comes into contact with the contents of the double container 1, and is, for example, a polyolefin such as low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer and a mixture thereof. And is preferably made of low-density polyethylene or linear low-density polyethylene. 50-300 MPa is preferable and, as for the tensile elastic modulus of the resin which comprises the inner surface layer 12b, 70-200 MPa is preferable. This is because the inner surface layer 13b is particularly flexible when the tensile elastic modulus is in such a range. The tensile modulus is specifically, for example, 50, 100, 150, 200, 250, 300 Mpa, and may be within a range between any two of the numerical values exemplified here. ..

The adhesive layer 12c is a layer having a function of adhering the EVOH layer 12a and the inner surface layer 12b to each other. For example, the above-mentioned polyolefin to which an acid-modified polyolefin having a carboxyl group introduced (eg, maleic anhydride-modified polyethylene) is added, Ethylene vinyl acetate copolymer (EVA). An example of the adhesive layer 12c is a mixture of low-density polyethylene or linear low-density polyethylene and acid-modified polyethylene.

Further, as shown in FIGS. 2 and 3, in the shoulder portion of the housing portion 3, a recess 7a is formed in the outer layer container 11 and an air introduction hole 15 is formed therein. The air introduction hole 15 is a through hole provided only in the outer layer container 11 and does not reach the inner bag 12. Then, the air is introduced from the air introduction hole 15 to form the intermediate space 21 between the outer layer container 11 which is the outer shell and the inner bag 12. That is, the intermediate space 21 and the external space are communicated with each other by the air introduction hole 15.

A valve member 5 is provided in the air introduction hole 15, and the valve member 5 is inserted between the outside air introduction hole 15 and is slidable with respect to the outside air introduction hole 15 and an intermediate portion between the shaft portion 5a. A lid portion 5c that is provided on the space 21 side and has a larger cross-sectional area than the shaft portion 5a, and a locking portion 5b that is provided on the external space S side of the shaft portion 5a and that prevents the valve member 5 from entering the intermediate space 21. Prepare

The lid portion 5c is configured to substantially close the outside air introduction hole 15 when the outer layer container 11 is compressed, and has a shape in which the cross-sectional area becomes smaller toward the shaft portion 5a. The locking portion 5b is configured so that air can be introduced into the intermediate space 21 when the outer layer container 11 is restored after being compressed. When the outer layer container 11 is compressed, the pressure in the intermediate space 21 becomes higher than the external pressure, and the air in the intermediate space 21 leaks out from the outside air introduction hole 15. Due to this pressure difference and the flow of air, the lid portion 5c moves toward the outside air introduction hole 15, and the lid portion 5c closes the outside air introduction hole 15. Since the lid portion 5c has a shape in which the cross-sectional area decreases as it approaches the shaft portion 5a, the lid portion 5c easily fits into the outside air introduction hole 15 and closes the outside air introduction hole 15.

When the outer layer container 11 is further compressed in this state, the pressure in the intermediate space 21 increases, and as a result, the inner bag 12 is compressed and the contents in the inner bag 12 are discharged. Further, when the compressive force applied to the outer layer container 11 is released, the outer layer container 11 tries to restore due to its elasticity. At this time, the lid portion 5c separates from the outside air introduction hole 15, the outside air introduction hole 15 is unblocked, and the outside air is introduced into the intermediate space 21. Further, in order to prevent the locking portion 5b from blocking the outside air introduction hole 15, the locking portion 5b is provided with a protrusion 5d at a portion contacting the outer layer 11, and the protrusion 5d contacts the outer layer container 11. Thus, a gap is provided between the outer layer container 11 and the locking portion 5b. Instead of providing the protrusion 5d, a groove may be provided in the locking portion 5b to prevent the locking portion 5b from blocking the outside air introduction hole 15.

Next, the operation of the container with a cap 1 having a check valve (double container) will be described.

As shown in FIGS. 5A to 5C, the side surface of the outer layer container 11 is grasped and compressed while the product filled with the contents is tilted to discharge the contents. At the start of use, since there is substantially no gap between the inner bag 12 and the outer layer container 11, the compression force applied to the outer layer container 11 becomes the compression force of the inner bag 12 as it is, and the inner bag 12 is compressed. Then, the contents are discharged.

The cap 30 has a built-in check valve and can discharge the contents in the inner bag 12, but the outside air does not flow back into the inner bag 12. Therefore, when the compressive force applied to the outer layer container 11 after discharging the contents is removed, the outer layer container 11 tries to return to its original shape by its own restoring force, but the inner bag 12 remains deflated and only the outer layer container 11 remains. It will expand. Then, as shown in FIG. 5D, the inside space 21 between the inner bag 12 and the outer layer container 11 is in a depressurized state, and outside air is introduced into the intermediate space 21 through the outside air introduction hole 15 formed in the outer layer container 11. be introduced. When the intermediate space 21 is in the depressurized state, the valve member 5 is not pressed against the air introduction hole 15, so that the introduction of outside air is not hindered.

Next, as shown in FIG. 5( e ), when the side surface of the outer layer container 11 is again gripped and compressed, the valve member 5 comes into contact with the atmospheric air introduction hole 15 and closes it, so that the pressure in the intermediate space 21 is reduced. As a result, the compressive force applied to the outer layer container 11 is transmitted to the inner bag 12 through the intermediate space 21, and this force compresses the inner bag 12 to discharge the contents. Excluding the compressive force applied to the outer layer container 11 after the contents are discharged, the outer layer container 11 introduces the outside air into the intermediate space 21 from the outside air introduction hole 15 and, as shown in FIG. It is restored to its original shape by the restoring force.

The configuration of the container body 2 is as described above, and the cap 30 is attached to the mouth portion 4 of the container body 2. Hereinafter, the configuration of the attachment portion of the cap 30 will be described in detail.

The cap 30 is attached to the mouth portion 4 of the container body 2, and as shown in FIG. 6, the fixing portion 31 directly fixed to the mouth portion 4 of the container body 2 by tapping, and the fixing portion 31. It is composed of a cap body 32 screwed to a screw portion 31a provided on the outer peripheral surface.

The fixing portion 31 is attached to the mouth portion 4 of the container body 2 by tapping, and a screw thread 31a is formed on the outer peripheral surface thereof.

The cap body 32 is composed of a check valve 33 and a lid portion 35 that covers the spout through a hinge 34 and the like, and has an inner ring 35 that abuts the inner peripheral surface of the mouth portion 4 when mounted. There is. The check valve 33 is attached in such a manner that it is fitted into the inner ring 35 so as to open and close a spout hole 38 provided in a valve seat portion 36 in the inner ring 35, and the outer peripheral portion is pressed by a pressing member 37 and fixed. Has been done.

A screw portion 32a is formed on the inner peripheral surface of the cap body 32, and is screwed with the screw portion 31a formed on the outer peripheral surface of the fixing portion 31. The stopper portion 40 is connected, the cap body 32 is attached so as to be separated from the fixed portion 31, and the screw portion 31a and the screw portion 32a are not screwed together.

The stopper portion 40 is an annular member that is connected to the lower portion of the cap body 32 in a continuous manner. As shown in FIG. 7, in order to secure strength, the stopper portion 40 has a plurality of vertical portions at equal intervals on its peripheral surface. Ribs 41 are formed. In order to secure the strength, it may be possible to increase the thickness of the stopper portion 40 itself, but in that case, the shape of the stopper portion 40 itself becomes highly rigid, and it becomes difficult to break it. There is a risk that In addition, a plurality of inwardly facing claw portions (small protrusions) 42 are also formed at equal intervals on the lower end of the stopper portion 40. By locking these claw portions 42 to the fixing portion 31, At the time of use, the cap body 32 is attached and fixed to the fixing portion 31. Instead of the claw portion 42, locking by strong interference or the like is also possible.

The stopper portion 40 is connected to the cap body 32 via the easy-cutting portion 43, and can be easily torn off from the cap body 32. Further, since the stopper portion is locked to the fixed portion, the mounting state of the cap becomes stable, and the cap does not move unintentionally and the stopper portion is not accidentally cut. In the case of the present embodiment, a knob portion 44 is provided at one end of the stopper portion 40 in order to facilitate the tearing of the stopper portion 40.

On the other hand, a seal member 50 is attached to the tip surface of the mouth portion 4 of the container body 2, and the mouth portion 4 of the container body 2 is in a state of being sealed by the seal member 50. The sealing member 50 seals the container 1 with a cap filled with the contents and seals the mouth 4 to improve the storage stability, and protects the gas barrier property, the water vapor barrier property, and the like from the outside air. On the other hand, it needs to be formed of a material having a barrier property. Therefore, the seal member 50 is preferably made of aluminum or the like.

When not in use, the inner ring 35 of the cap body 32 is held by the stopper portion 40 in such a state that it does not enter the mouth portion 4, and prevents the mouth portion 4 from being sealed by the seal member 50. There is no.

When the container 1 with a cap of this embodiment is opened and used, first, as shown in FIG. 8, the stopper portion 40 coupled to the cap body 32 is torn off and removed. As described above, the stopper portion 40 is coupled to the cap body 32 via the easy-cutting portion 43 and is located between the cap body 32 and the fixing portion 31, so that the stopper portion 40 can be easily torn off.

By cutting off the stopper portion 40, the locking of the cap body 32 to the fixing portion 31 is released, so that the cap body 32 is removed from the fixing portion 31. When the cap body 32 is removed, as shown in FIG. 9, the mouth portion 4 of the container body 2 sealed by the seal member 50 is exposed in the fixed portion 31. Therefore, the seal member 50 is peeled off and opened.

After opening the seal member 50, the cap body 32 is fixed to the fixing portion 31 by screwing. After the stopper portion 40 is cut off, nothing prevents the cap body 32 from being screwed into the fixing portion 31. By screwing the cap body 32 to the fixing portion 31, as shown in FIG. 10, the inner ring 35 of the cap body 32 enters the mouth portion 4 and its outer peripheral surface abuts the inner peripheral surface of the mouth portion 4. , Sealed.

In the state where the seal member 50 is opened, the cap body 32 is brought into a state in which it can communicate with the outside by the operation of the check valve 33, and the content can be poured out. For example, when the outer layer container 11 is compressed, the internal pressure of the container body 2 rises, the check valve 33 separates from the spout hole 38, and the spout hole 38 is opened. As a result, the content passes through this pouring hole 38 and is poured out to the outside. When the compression of the outer layer container 11 is released, the internal pressure of the container body 2 is lowered, and the check valve 33 comes into contact with the pouring hole 38 to establish a sealed state.

In the container 1 with a cap having the above configuration, the cap and the fixing portion are combined and assembled, so that the size of the fixing portion can be changed to standardize the size of the cap regardless of the size of the mouth portion. It is possible to easily handle containers of various sizes. Further, since the fixing portion is attached by tapping, it has the following advantages.

In the case of a laminated peeling container, if a screw thread is to be formed at the mouth, it is necessary to perform molding to form the screw thread in a state in which the outer layer container and the inner bag are laminated, and the inner bag should be careless when molding. There is a high possibility that problems such as peeling will occur. Therefore, a stopper type container is preferable. If the mouth of a stopper type container is to be sealed with aluminum, it is difficult for the user to remove the cap that has been stoppered tightly and then refit the stopper. There is no choice but to adopt a mechanism that breaks through the aluminum seal by fitting a cap with built-in parts. However, if a mechanism that breaks through the aluminum seal is used, there is a risk that fragments of the aluminum seal will mix into the contents of the container.

The container 1 with a cap of the present embodiment is a so-called stopper type container, but has a superior feature that the user can peel off the aluminum seal without breaking through the aluminum seal.

Although the embodiment to which the present invention is applied has been described above, it goes without saying that the present invention is not limited to this embodiment and various modifications can be made without departing from the gist of the present invention. ..

For example, the above embodiment is an embodiment in which the present invention is applied to a double container (lamination peeling container), but the present invention is not limited to this, and can be applied to any container such as an ordinary plastic container. ..

Further, in the previous embodiment, the fixing portion 31 was attached to the mouth portion 4 by tapping, but the outer peripheral surface of the mouth portion 4 and the inner peripheral surface of the fixing portion 31 are each formed with a screw thread, which is a so-called screw. The fixing portion 31 may be fixed to the mouth portion 4 by stopping.

1 Container with Cap 2 Container Main Body 3 Storage Section 4 Mouth Section 5 Valve Member 11 Outer Layer Container 12 Inner Bag 15 Outside Air Introduction Hole 30 Cap 31 Fixing Section 32 Cap Main Body 33 Check Valve 34 Lid 35 Inner Ring 38 Pouring Hole 40 Stopper Part 41 Vertical rib 42 Claw (small protrusion)
42 Easy-to-cut part 50 Seal member

Claims (2)

An outer layer container and an inner bag, a double container in which the inner bag shrinks as the contents contained in the inner bag decrease,
The mouth part is sealed with a seal member, and the mouth part is provided with a fixing part having a screw thread formed to be screwed with the cap on the outer peripheral surface by a stopper .
A cap, to which the annular stopper portion is coupled via the easy-cutting portion, is locked to the fixing portion,
The cap has an inner ring and a check valve,
A protrusion for engaging with the fixed portion is formed on the stopper portion,
The cap body is mounted and fixed to the fixing portion when not in use by locking the protrusion of the stopper portion to the fixing portion,
By cutting off the stopper portion, the cap can be screwed into the fixing portion ,
A container with a cap , wherein the inner ring is brought into contact with the inner peripheral surface of the mouth portion by screwing the cap onto the fixing portion after opening the sealing member . Wherein the circumferential surface of the stopper portion, caps with container according to claim 1, wherein the longitudinal ribs, characterized in that formed in plural.

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