JP2003165560A - Openable or closable valve of pouring-out container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an openable or closable valve attached to an opening part of a hollow container or a soft container of bag-like shape or the like and suitable for use in discharging the stored content. <P>SOLUTION: This pouring-out container is constituted as follows. That is, a valve vase part 2 is formed; this valve base part 2 comprising a cylindrical fitting part 3 formed to fit into an opening part 8a of a hollow container made of thermoplastic resin by blow molding or a bag-like or another-shaped soft container 8, and a cylindrical part 5 vertically raised so as to pass through the central part of a top wall 4 of the cylindrical fitting part; an openable and closable value body 1 is integrally formed by injection molding using thermoplastic resin with a cylindrical valve member 6 formed removable in the cylindrical part of the valve base part and connected to a top wall part of the cylindrical fitting part in a forward or rearward moving manner by a band-like connecting part 7 formed in such a way that it can be bent; and the valve member is fitted into the opening part of the pouring-out container main body storing liquid or powder-like content to enable the stored content to be fed out easily without dispersing it. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a valve body that opens and closes the opening of a container when pouring out the contents contained in a hollow container. Such as the opening of the container for pouring out the contents, or the opening of the container for pouring out the contents from a container containing various solutions or fine powders, or the various solutions or fine powders, etc. Open the opening of the refill container to refill the empty container,
The present invention relates to a structure of an openable and closable valve body such as a pouring container suitable for use as an on-off valve for opening and closing.

[0002]

2. Description of the Related Art Conventionally used pouring containers containing shampoo, various liquid detergents, and the like are usually discarded as they are after pouring out the contents and emptying them. However, some of such pour containers are equipped with a pour pump for pouring out the contents, and the manufacturing cost is high because it is convenient compared to other containers. However, a method has been adopted in which such containers are discarded as much as possible, and the empty contents are refilled and reused.

Similarly, printing ink such as liquid or powder used for printing machines, copying machines, printers, etc., toner, etc. is stored in a storage tank so that the amount thereof does not change as it is used. Although it is supplied to the printing unit in advance, the storage tank is generally supplied from a cartridge container filled with toner etc., and printing is performed again on an empty cartridge container. Inks that have been filled with ink, toner, or the like so that they can be reused have come into use.

Further, as a recent general social phenomenon, various types of disposable containers, which are frequently used on a daily basis, are
For critical reasons such as waste of resources and destruction of the global environment, the disposal of the waste has become a major social issue, and as a result, the Container Recycling Law was enacted. Therefore, various methods and means for reusing the used containers without discarding the used containers are being devised.

Under such circumstances, in order to reuse and reuse the pour-out container using the pour-out pump, a refillable container containing shampoo, various liquid detergents, and the like is used for the above-mentioned pour-out container. However, it is necessary to easily transfer the contents such as shampoo, and in order to replenish the contents from the cartridge container containing the toner etc. into the storage tank of the copying machine etc. There is a need for something that can be easily replenished without soiling hands or scattering in the room.

Due to such social circumstances, liquids or powders such as shampoo and toner whose contents have decreased as they are used can easily be replenished to the above-mentioned various types of pouring containers and copying machines. Various replenishing containers having such a structure have been developed.
As disclosed in Japanese Patent Laid-Open No. 65253/1999 and Japanese Patent Laid-Open No. 11-143204, a toner container or the like provided with a valve body in which an opening portion of a replenishing container can be opened and closed and a receiving port for receiving is removable. The invention of a refill container has been proposed.

As shown in FIG. 11 (a), these replenishing containers are pouches or other soft containers containing toner such as liquid or powder and provided with an opening / closing valve for replenishment at the opening at one end. In the opening 31 of the soft container body 31
The valve body 32 including a valve body base 33 having a discharge passage 33a for discharging the contents and a valve portion 34 provided so as to be separable from and in contact with the valve body base is attached to a. The discharge hole 33b is formed so that the portion 34 can be brought into contact with or separated from the opening of the lead-out path 33a to open and close the discharge hole 33b. Then, the valve portion 34 is
A fitting recess 34a into which the valve operating member 36 of the receiving part is fitted,
A sealing portion 34b that fits and closes the opening of the lead-out path 33a is provided, and is held by a support 35a standing upright on the base by a support piece 34c, from a stopper piece 35b provided at the tip of the support. It is held at an appropriate position by the holding body 35.

The replenishing container formed as described above is mounted in the opening 31a of the container main body 31 on the valve operating member 36 provided in the receiving portion on the receiving side where the contents are reduced or become empty. When the valve body 32 is fitted, as shown in FIG. 11 (b), the tip portion 36 a of the valve operating member 36 is moved to the valve portion 34.
Since the valve portion is pushed up by being fitted into the fitting recessed portion 34a, the sealing portion 34b of the valve portion 34 is separated from the opening of the outlet passage to open the discharge hole 33b, and at the same time, the discharge portion provided below the sealing portion 37 is closed. The contents can be supplied to the receiving side through the introduction path 36c in communication with the outlet 36b.

In the replenishing container thus formed, the valve operating member 36 of the receiving portion which is formed so as to be able to be fitted to the outlet passage 33a of the valve body 32 is fitted to push up the valve portion. Since the discharge hole 33b of the replenishing container is opened and connected to the discharge port of the receiving portion, the contents can be easily replenished to the replenishment side, and the contents can be scattered to pollute the user and the surrounding area. Without it, it is convenient and convenient. However, since the valve body formed as described above has a slightly complicated structure of the valve portion and the support portion, a high degree of technology is required for manufacturing the molding die and molding the valve body. ,
Since the manufacturing cost is unavoidably high, the structure of the valve body is made a little simpler, the molding is easier, and the opening and closing of the valve is also better, so that it can be manufactured at low cost. Appearance of a valve body suitable for pouring and supplying is desired.

[0010]

DISCLOSURE OF THE INVENTION The invention of the present application is to open a blow-molded hollow container for accommodating contents such as liquid or powder, or a deformable soft container having a bag shape or other shapes. A valve element that is suitable for being used by pouring out the contents by attaching it to a part, or a valve element that is suitable for pouring out the contents and replenishing them to other containers, etc. In addition, when formed into a structure that can be easily opened and closed, when pouring out and using the contents, or when replenishing, the contents can be easily poured out without scattering. The present invention provides an openable and closable valve body having a structure that can be manufactured at a low cost.

[0011]

[Means for Solving the Problems] A tubular fitting portion which is formed so as to be fittable into an opening of a hollow container, a bag-shaped or other soft container formed by blow molding a thermoplastic resin, and a tubular fitting portion of the tubular fitting portion. A base portion of the valve body is formed of a cylindrical portion that is erected so as to penetrate through the central portion of the top wall, and a tubular valve member that is detachably formed in the cylindrical portion of the valve body base portion can be curved. An openable and closable valve element is integrally connected to the top wall portion of the tubular fitting portion by the formed belt-like connecting portion so as to be movable back and forth.
Molded by injection molding using thermoplastic synthetic resin, the valve body is fitted into the opening of the pouring container main body containing the contents such as liquid or powder, and the contents are not scattered and easy. Configure a pouring container that can be poured into.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION To mold the valve body of the present invention,
A tubular fitting portion formed by injection molding of a thermoplastic synthetic resin so that it can be fitted into an opening formed in the pouring container body, a top wall portion connected to an upper end portion of the fitting portion, A valve element base portion formed of a cylindrical portion forming a lead-out path penetrating through the central portion of the top wall portion is formed, and a tubular valve member detachably formed in the cylindrical portion of the valve element base portion. A bendable strip-shaped connecting portion that is formed and is connected to the rear end of the valve member is formed, and the strip-shaped connecting portion that is connected to the rear end of the valve member is formed into a tubular fitting portion of the valve body base. The valve portion is connected to the top wall portion of the valve so that the valve portion can be moved back and forth, and a valve body for a pouring container that can be opened and closed is formed into an integral structure.

The tubular valve member of the valve body which can be opened and closed as described above is fitted into the cylindrical portion of the valve body base to be in a closed state, and the valve body which can be opened and closed is liquid or powder. After the openable valve body is fitted and fixed to the opening of the container body made of a hollow container or a bag-shaped or other soft container that contains the contents such as the body, the discharge opening of the valve body is fixed. (EN) A pouring container which is packaged so as to be hermetically closed by a sealing member and which can be easily poured out without scattering the contents.

In the pour-out container thus constructed, when the contents are poured out and used, the sealing member that has sealed the discharge opening of the valve body portion of the pour-out container is peeled off, and then the cylindrical portion is formed. The receiving valve of the spout or the receiving port formed so that it can be fitted into the outlet passage of is connected so as to be fitted in the cylindrical portion of the valve body, and the tubular valve member of the valve body is pushed up by the receiving valve. When fixed in this state, the pouring container can be poured by opening the opening provided in the cylindrical portion of the valve body, and the contents in the container pass through the opening to the outside from the pouring outlet in appropriate amounts. It is poured out sequentially.

[0015]

EXAMPLES A valve body suitable for opening and closing the outlet of a pouring container according to the invention of the present application and a pouring container using the valve body will be described based on an optimum embodiment. A detailed description will be given with reference to the drawings. As shown in FIG. 2, a valve body 1 attached to an opening portion of a pouring container of the present invention has a valve body base portion 2 which is fitted and fixed to the opening portion of a container containing contents such as liquid or powder. And a valve member 6 that fits into a cylindrical portion that forms a lead-out path at the valve body base are connected by a bendable band-shaped connecting member 7 into an integrated structure, which is injected using a thermoplastic resin. It is molded by molding or other molding means.

As shown in FIG. 3, the valve body base portion 2 has a fitting cylinder portion 3 which is fitted into the opening portion 8a of the container body 8,
It is formed of a top wall portion 4 connected to the upper end portion of the fitting tubular portion and a cylindrical portion 5 erected upright through the top wall portion, and a container is provided at the tip of the fitting tubular portion 3. Is provided with a flange portion 3a that abuts the opening portion 8a of the sliding portion 5a, and the inner peripheral surface of the tip end portion of the cylindrical portion 5 is fitted with a cylindrical receiving valve of the receiving portion. However, a concave groove 5b into which the engaging ring of the valve member is fitted is provided on the inner peripheral surface of the rear end portion.

Similarly, as shown in FIG. 3, the valve member 6 is composed of a tubular body which is formed so that it can be fitted in the cylindrical portion 5 of the valve body base 2, and the tip of the tubular body is formed. The part 6a is
A cylindrical receiving valve on the receiving side is reduced in diameter so that it can be fitted, and an annular engaging convex portion (engaging ring) 6b with which the cylindrical receiving valve engages is provided on the outer peripheral surface thereof. Further, on the outer peripheral surface of the rear end portion, an annular engaging convex portion (engaging ring) 6c that engages with the concave groove 5b of the cylindrical portion of the valve body base is provided. The valve member 6 is connected to the top wall portion 4 of the valve body base 2 by a belt-shaped connecting member 7 which is connected to the rear end thereof and is capable of being curved and deformed, and is connected to the cylindrical portion 5 of the valve body base. The connecting member 7 is provided with a bent portion formed on the back surface of the belt-shaped body in an uneven shape so as to be easily bent.

In the valve body 1 formed as described above, the connecting member 7 is curved by pushing the tip portion 6a of the valve member 6 into the cylindrical portion 5 of the valve body base 2, and as shown in FIG. Since the opening portion 6e of the valve member 6 is in close contact with the inner peripheral surface of the cylindrical portion 5 and is closed, the valve element 1 in the sealed state is filled with the poured contents such as liquid or powder. By fitting and fixing it in the opening of the container
A pour-out container that allows the contents to be pour out and used or replenished is configured. At this time, the valve member 6 causes the cylindrical portion 5 to be deformed by the stress of the curved connecting member 7.
Since it is pressed against the inner peripheral surface of the valve, the valve body of the present invention can maintain a stable closed state.

As shown in FIG. 5, the pouring container A constructed in this manner is different from the receiving container B whose contents have been emptied or reduced, as shown in FIG. When a tip end portion of the receiving valve 9 provided in 10a is joined so as to engage with the sliding surface 5a of the cylindrical portion 5 of the valve body base portion 2 of the dispensing container body 8 and then a pressing force is applied, As shown in FIG. 6, since the valve member 6 of the valve body is pushed up by the receiving valve 9, the opening portion closed by the inner peripheral surface of the cylindrical portion 5 rises and opens. As shown in FIG. 1, the pouring container 8 is in a state in which the valve portion of the valve body 1 is opened and the contents can be poured out.

The dispensing container constructed by using the valve element of the present invention is not only used as a replenishing container as described above, but also a main body of a known dispensing container equipped with various dispensing devices. It is also possible to use it instead of. As one example, as shown in FIG. 7, a container 23 containing shampoo and other liquid contents is attached to a container fixing base 21a of a dispensing device 21 equipped with a reciprocating pump 22. In the liquid pouring device according to the present invention, when the container 23 containing the contents becomes empty, the container of the present invention containing shampoo or other contents instead of the empty container. It can be used in the same manner as the conventional one by mounting.

That is, in the liquid pouring apparatus as shown in FIG. 7, the empty container is removed, and then, as described above, the present invention is applied to the container containing the contents such as shampoo. The dispensing container 8 with the valve body 1 of FIG. 4 fitted therein is fitted with the receiving valve 24 projecting from the fixed base 21a of the dispensing device 21 into the container mouth neck 8a. When it is pushed in so as to fit into the cylindrical portion 5 of the valve body 1 and joined,
The valve portion 6 is pushed up by the receiving valve 24, and the pouring container 8
As shown in FIG. 1, the opening 6e of the valve body 1 is opened. Then, in the dispensing container joined to the dispensing device in this manner, the body portion of the container body 8 is connected to the dispensing device 21.
By holding and fixing the fixing band and the elastic holding piece 24 provided on the main body side wall portion 21b so as not to fall off, while being fixed so as not to come off from the fixing base 21a of the pouring device, By pressing the pressing head portion 22a of the dispensing pump 22 as in the conventional case, the contents can be dispensed from the nozzle 22b.

While pouring out and using as described above, it is desired to replace with a container containing different contents,
When the pouring container 23 is pulled out from the pouring device 21, the valve portion 6 fitted to the receiving valve 24 of the valve body 1 is pulled back to open the opening portion 6
Since e is closed, the pouring container with the remaining contents can be stored as it is. Further, in the embodiment described above, the valve body 1 to be mounted on the container body 8 is, as shown in FIG. 3, a valve body base 2 which is formed so that it can be fitted into the opening 8a of the container, The valve member 6 that is detachably fitted to the cylindrical portion 5 of the valve body base is formed into an integral structure by connecting it with a band-shaped connecting member 7 that can be curved and deformed. The present invention is not limited to such an integrated structure, and the valve base 2 and the valve member 6 may be formed as separate structures as shown in FIG.

For example, as shown in FIG. 8 (a), it is erected up through the top wall portion 4 provided at the upper end of the fitting tubular portion 3 which is formed so that it can be fitted into the opening 8a of the container body 8. The valve body base 2 including the cylindrical portion 5 and the valve member 6 including the cylindrical body detachably formed on the cylindrical portion 5 of the valve body 5 are separately molded by injection molding a thermoplastic synthetic resin. . And
In the cylindrical portion 5 of the valve body 2, a sliding surface 5a on which the cylindrical receiving valve 9 on the receiving side is fitted is provided on the inner peripheral surface of the tip portion, and the valve member 6 is provided on the inner peripheral surface of the rear end portion. The concave groove 5b into which the engaging ring of
The tip end 6a of the cylindrical body of the valve member 6 is formed so that the receiving valve 9 on the receiving side can be fitted thereto, and the outer peripheral surface thereof is engaged with the receiving valve. A ring 6b is provided so as to project, and further, an engaging ring 6c that engages with a groove 5b provided in the cylindrical portion of the valve body base is provided on the outer peripheral surface of the rear end portion, and the valve body base 2 The connecting member that connects the valve member 6 and the valve member 6 is omitted and does not exist.

The valve body base and the valve member, which are separately molded as described above, can slide the valve member 6 on the cylindrical portion 5 of the valve body base 2, as shown in FIG. 8B. The valve body 10 of the present invention is configured by fitting the valve body 10 to the above. Also,
When molding the valve body base 2 and the valve member 6 as separate bodies, the valve member 6 and the receiving valve 9 are molded in an integrated state, as shown in FIG. 8 (b). So that the valve base 2
It is also possible to form the valve body 10 by fitting it to
The valve body 10 thus configured can be mounted in the opening of the container containing the contents in the same manner as in the embodiment shown in FIG.

The valve body 10 constructed by slidably fitting the separately molded valve body base 2 and the valve member 6 as described above is the same as the valve body 1 of the first embodiment. Since the molding die and the molding process can be simplified as compared with the one in which the integral structure is molded in, the valve body can be manufactured at a reduced cost and the valve body is Similarly, it can be used as a valve body for opening and closing a liquid pouring container, and its function and effect are exactly the same.

In any of the above-mentioned embodiments, the container body of the pouring container has a certain degree of self-sustainability like a conventionally used hollow container formed by blow molding of a thermoplastic synthetic resin. The case where the valve body of the present invention is applied to a hollow container having rigidity is explained, but the valve body of the present invention is not applicable only to such a hollow container, and is disclosed in Japanese Patent Laid-Open No. 10-35678. As seen in Japanese Laid-Open Publication No. 51-61518, etc., it can be used for blow molding containers, bag-shaped containers and other soft hollow containers that are molded into thin, easily deformable containers so that they can be easily crushed. Can be applied.

As one example, there is one as shown in FIG. 9, which is formed by blow molding a thermoplastic synthetic resin so that the barrel wall of the container becomes extremely thin and is easily deformable. A liquid content is contained in a hollow container, and the valve body of the present invention is attached to the mouth and neck of the container body. For example, as shown in FIG. 9A, the hollow container body 1
In the case where the diameter of the mouth / neck portion 11a of No. 1 is formed to be slightly larger, the valve body 1 provided with the band-shaped connecting member 7 that is integrally molded as shown in FIG. As shown in the figure, even if the valve body 10 is formed as a separate body and is not provided with the connecting member, the fitting cylinder portion 3 of the valve body is fitted and fixed to the mouth / neck portion 11a of the hollow container body 11. By doing so, a container capable of pouring out the contents can be constructed.

Further, as shown in FIG. 9 (b), when the diameter of the mouth / neck portion 11a of the hollow container body 11 is formed to be small, the connecting member formed separately as shown in FIG. By fitting the valve body 10 not provided with the cylindrical body 5 so that the cylindrical portion 5 is fixed at the mouth / neck portion 11a of the container body, a container capable of pouring out the contents can be configured. The pouring container as shown in FIG. 9 formed as described above can be used in the same manner as the pouring container shown in FIG. 1 described above, and therefore the pouring device 21 shown in FIG. It can also be attached and used in this state.

Further, according to the present invention, as shown in FIG.
An opening provided at one end of a soft container in which a bag-shaped container 12 is formed by using a film- or sheet-shaped soft material formed of a thermoplastic synthetic resin, and the liquid content is contained in the container. A container in which the contents can be poured out by joining the valve body 10 of the present invention as shown in FIG. 8 mentioned above to the 12a by closely contacting them with a welding means such as a high frequency wave or an ultrasonic wave or various adhesives. It is possible to configure the valve body 2 as shown in FIG. 4, if necessary.
It is also possible to construct a container in which the contents can be poured by being joined to the opening 12a of the soft container as described above.

As described above, it is very difficult to use the bag-shaped soft container 12 in which the liquid contents are stored by mounting it on the pouring device 21 as shown in FIG. However, by placing the outside of the bag-shaped soft container 12 in a state of being covered with a protective cover for holding the container and maintaining the shape, the bag-shaped soft container 12 is attached to the dispensing device 21 as shown in FIG. The contents can be poured out. In the above-mentioned embodiments, the blow-molded hollow container or bag-shaped soft container in which the valve body of the invention of the present application is filled with the liquid content is described in detail. The mounted container can be used not only for storing the liquid contents as described above, but also for storing the powder contents in the same manner as storing the liquid contents. Is.

[0031]

As described above, since the valve body of the present invention has a simpler structure than the conventional valve body, the molding die can also have a simple structure, and the injection molding can be performed. It becomes easy to mold by the above, and the manufacturing cost can be reduced. Further, when the valve body of the present invention is mounted and sealed in the opening of the hollow container or the bag-shaped container in which the contents are stored, it can be easily mounted even if the opening is small. Therefore, the sealed state can be reliably maintained. Further, the valve body of the present invention can easily fit the receiving valve on the receiving side to the cylindrical portion forming the discharge path of the valve body base, and easily slide the valve member by the receiving valve. It can be opened and closed.

[Brief description of drawings]

FIG. 1 is a perspective view of a valve body showing a state in which a valve member of the valve body of the present invention attached to a dispensing container is opened and ready for dispensing.

FIG. 2 is a perspective view showing a valve body of the present invention integrally formed by injection molding or the like.

3 is a cross-sectional view taken along the line XX of the valve body shown in FIG.

FIG. 4 is a perspective view showing a state in which the valve member of the valve body shown in FIG. 2 is closed and mounted on the mouth and neck of the container.

FIG. 5 is a cross-sectional view showing a state in which the container equipped with the valve body of the present invention is fitted and coupled to the receiving side.

FIG. 6 is a cross-sectional view showing a state in which a receiving valve on the receiving side is fitted and coupled to a container equipped with the valve body of the present invention, and the valve is opened.

FIG. 7 is a diagram showing a state in which a hollow container using the valve body of the present invention is attached to the liquid pouring device.

FIG. 8 is a cross-sectional view (a) in which the valve body of the second invention of the present application is separated into a valve body base and a valve member and molded separately, and a cross section showing a state in which the valve body base and the valve member are incorporated. It is a figure (b).

FIG. 9 is a cross-sectional view showing a pouring container in which the valve body of the present invention is mounted in a thin hollow container for refilling.

FIG. 10 is a view in which the valve body of the present invention is attached to a bag-shaped soft container.

FIG. 11 is a view showing a container (a) and a valve body (b) which are prior arts of the present invention.

[Explanation of symbols]

1. Disc 2. Valve base 3. Mating cylinder 3a. Tsubabe 4. Top wall 5. Cylindrical part 5a. Sliding surface 5b. Groove 6. Valve member 6a. Cylindrical body tip 6b. Engagement protrusion 6c. Engagement ring 6d. bottom 6e. Aperture 7. Connecting member 8. Pouring container 8a. Aperture 9. Receipt valve 10. Disc 10a. Receiving side neck 10b. Receiving container body 11. Hollow container body 11a. Mouth and neck 12. Bag-shaped container 12a. Aperture A. Pouring container B. Receiving container

Claims (7)

[Claims] 1. A cylindrical fitting portion formed so as to be fitted into an opening of a dispensing container body, a top wall portion connected to an upper end portion of the fitting portion, and a central portion of the top wall portion. A tubular valve having a valve body base formed of a cylindrical portion penetrating through and provided with an opening in a peripheral wall of the tubular body and detachably formed in the cylindrical portion of the valve body base. An openable and closable valve body for a dispensing container, characterized in that a valve body is formed by fitting members together so as to be opened and closed. 2. A tubular fitting portion which is formed so as to be fitted into the opening of the dispensing container body, a top wall portion which is connected to an upper end portion of the fitting portion, and a central portion of the top wall portion. A valve body base is formed from a cylindrical portion penetrating upright, and a tubular valve member is provided in which an opening is provided in a peripheral wall of a cylindrical body detachably formed in the cylindrical portion of the valve body base. And a top wall portion of the valve body base portion and a rear end portion of the tubular valve member are connected by a bendable belt-like connecting member to form an integrally openable and closable valve body. A valve body that can open and close the pouring container. 3. The valve body base is provided with a collar portion at the front end of the fitting cylindrical portion, with which the opening end of the container abuts, and at the inner peripheral surface of the front end portion of the cylindrical portion, A sliding surface with which the receiving valve is engaged is provided, and an engagement groove with which an annular engaging projection provided on the valve member engages is provided on the inner peripheral surface of the rear end portion. The openable and closable valve body of the dispensing container according to claim 1 or 2. 4. The valve member 6 has an annular shape in which the cylindrical receiving valve of the receiving portion is reduced in diameter so that the front end portion of the cylindrical body can be fitted, and the outer peripheral surface of the valve member 6 engages with the cylindrical receiving valve. And an annular engaging protrusion that engages with an engaging recess provided in the cylindrical portion of the valve body base portion is provided on the outer peripheral surface of the rear end portion. An openable and closable valve body for a dispensing container according to claim 1 or 2. 5. The connection member according to claim 2, wherein the connecting member is formed so that a bent portion having an uneven shape is provided on a back surface formed in a band shape so as to be easily bent and deformed. A valve body that can be opened and closed freely. 6. A valve body base comprising a tubular fitting portion fitted into the opening of the container body, a top wall portion connected to the fitting portion, and a cylindrical portion erected upright through the top wall portion. And an openable and closable valve body, which is formed by connecting a tubular valve member that is detachably fitted to the cylindrical portion of the valve body base by a bendable band-shaped connecting member, by injection molding of thermoplastic synthetic resin. The valve body according to claim 2, wherein the valve body is openable and closable. 7. The connecting member is formed to be bendable by providing an uneven bent portion on a back surface of a belt-shaped body, and is formed at a top wall portion of the valve body base and a rear end of the tubular valve member. The valve body of claim 6, wherein the valve body is openable and closable.