KR20080009968A - Closure of vessel - Google Patents

Abstract

A closure of a vessel having a sealing member removing unit is provided to improve convenience in use since it is unnecessary to remove the sealing member separately, and to prevent an environmental pollution by storing the sealing member in the closure. A closure of a vessel having a sealing member removing unit includes: a main body(16) mounted on a vessel entrance(12) for discharging contents stored in the vessel(10) to the outside, and having a space formed therein; a sealing member(18) embedded in the main body and sealing the vessel entrance; and a sealing member separating part formed on the inner periphery of the main body, and separating the sealing member from the vessel entrance when opening the main body and storing the separated sealing member in the main body.

Description

Container Cap {CLOSURE OF VESSEL}

1 is a cross-sectional view of a container cap according to the prior art.

2 is a cross-sectional view showing a state in which the container cap according to an embodiment of the present invention is mounted on the container.

3 is a cross-sectional view of the sealing member according to the present invention.

4 is an operation state diagram of the container cap according to an embodiment of the present invention.

5 is a cross-sectional view of the container cap according to the second embodiment of the present invention.

6A and 6B are sectional views taken along the line A-A of FIG.

7 is a cross-sectional view of the container cap according to the third embodiment of the present invention.

8 is a perspective view of a locking portion of the sealing member locking unit according to the third embodiment of the present invention.

9 and 10 are operation state diagrams of the container cap according to the third embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: container 12: container entrance

16 main body 18 sealing member

20: groove 22: support protrusion

24: elastic support layer 26: metal layer

28: adhesive layer

The present invention relates to a container stopper for opening and closing the inlet of the container, and more particularly, to a container stopper that is convenient to use by opening the stopper so that the sealing member sealed at the container inlet can be separated from the container with the stopper.

1 is a cross-sectional view of a container cap according to the prior art.

Generally, the sealing member 152 is attached to the beverage container, the chemical container, etc. to protect the contents stored in the container 150. The sealing member is attached to the container inlet 160 by an adhesive method or the like, and the sealing member 152 is covered with a container stopper 154 to prevent unauthorized damage due to external impact or contact between objects.

The container stopper 154 has a female threaded portion 162 formed at an inner circumferential surface thereof, and a male threaded portion 164 is formed at the container inlet 160, and the container stopper 154 is turned when the container stopper 154 is turned. It is separated at 160 or mounted at the container inlet 160.

Such container stopper 154 is turned by holding the container stopper 154, the container stopper 154 is separated from the container inlet 160. Then, the sealing member 152 is removed from the container inlet 160 and the contents contained in the container are discharged to the outside through the container inlet 160.

However, the container closure according to the prior art as described above should be removed by removing the stopper from the container and removing the sealing member attached to the container opening by hand or by using a separate mechanism such as a knife. Because of the inconvenience in use.

In particular, when the sealing member is removed by hand, the sealing member and the edge of the container inlet edge are strong, so that the sealing member is not separated from the edge smoothly, and thus, the sealing member has to be removed by hand. Contact may cause hygiene problems.

Therefore, the present invention was created to solve the above problems of the prior art, an object of the present invention is to remove the sealing member separately by opening the cap so that the sealing member is separated from the container inlet and stored inside the container cap. To provide a convenient container stopper.

Another object of the present invention is to provide a container stopper which can prevent the environmental pollution caused by the separated sealing member is discarded to the outside because the sealing member removed from the container inlet by turning the stopper is stored inside.

Still another object of the present invention is to provide a container stopper that can solve the hygiene problem of hand contact with the container inlet when the sealing member is removed by hand because the sealing member is automatically removed by the sealing member removing unit. have.

The container closure according to the present invention for realizing the above object is mounted to the container inlet in which the contents stored in the container are discharged to the outside and having a space therein, and a seal built into the body and sealed at the container inlet. The member is formed on the inner circumferential surface of the main body, and when the main body is opened, the sealing member is separated from the container inlet, and the sealing member separating part stores the separated sealing member inside the main body.

A groove is formed at an upper end of the container inlet so that its outer circumferential surface is concavely recessed in the circumferential direction, and the sealing member is bonded to the upper surface of the container stopper and its edge is extended outwardly from the top of the container stopper. It is done.

The sealing member is formed of a paper material or a synthetic resin material and the like is formed to have a vehicle body elastic force to close the cap and elastically deformed while being in close contact with the container inlet, a metal layer attached to the lower surface of the elastic support layer and formed of aluminum material; And an adhesive layer applied to the bottom surface of the metal layer to allow the sealing member to be adhered to the container inlet.

The sealing member separating portion is formed to protrude inwardly on the inner circumferential surface of the main body is inserted into the groove formed at the container inlet and is located on the lower surface of the edge of the sealing member to push up the sealing member while being raised when the main body is separated from the container inlet. Raised to separate from the container inlet.

The sealing member separating portion is formed in the circumferential direction inside the main body and is located on the lower surface of the sealing member and inserted into a groove formed at the container inlet and supported by the edge of the sealing member and a predetermined interval on the upper side of the supporting protrusion It is positioned so as to be locked to the locking projections formed at equal intervals in the circumferential direction on the edge of the sealing member is rotated to the main body characterized in that it consists of a rotating projection for rotating so that the sealing member is separated from the container inlet.

The container stopper according to the present invention is mounted on a container inlet in which the contents stored in the container are discharged to the outside and has a space therein, a sealing member embedded in the body and sealed at the container inlet, and an inner circumferential surface of the body. A sealing member separating part which is formed to open the main body to separate the sealing member from the container inlet and stores the separated sealing member inside the main body, and when formed and pressed to the main body, penetrates the sealing member to enter the inside of the sealing member. It characterized in that it comprises a sealing member engaging unit that is engaged on the surface.

The sealing member locking unit is disposed in the main body so as to be movable in the vertical direction and is pressed by a user when the user presses the lower plate, and is formed on the lower surface of the pressing plate, and when the pressing plate is pressed, the sealing member enters the lower surface of the sealing member. It is composed of a engaging portion that is connected to the engaging portion between the outer circumferential surface of the pressing plate and the inner circumferential surface of the main body to guide the pressing plate to move in the vertical direction and to support the moved position of the pressing plate by its own elastic force. It features.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a cross-sectional view of a container stopper mounted on a container according to an embodiment of the present invention.

The container stopper according to an embodiment of the present invention is mounted to the container inlet 12 in which the contents stored in the container 10 are discharged to the outside and has a space therein, and the inside of the body 16 A sealing member 18 that is built-in and sealed at the container inlet and formed on the inner circumferential surface of the main body 16 to open the main body 16 separates the sealing member 18 from the container inlet and separates the sealing member 18. It consists of a sealing member separation unit for storing the inside of the main body (16).

The container 10 is used for a beverage container, a medicine container or an oil container in which the contents of a liquid or solid state are stored, and the container inlet 12 is sealed to the container inlet 12 through which the contents are discharged to the outside. A sealing member 18 is attached to protect the storage contained in (10).

The container inlet 12 is formed in the shape of the outer peripheral surface of the end portion is small in diameter to form a groove 20 in which the outer peripheral surface of the end of the container inlet 12 is recessed in the circumferential direction. Thus, the sealing member 18 is positioned in such a manner that its edge covers the groove 20 of the container inlet 12. That is, the edge of the sealing member 18 is disposed to extend outwardly from the end of the container inlet 12 and the edge is not attached to the container inlet 12 by the groove 20 formed in the container inlet 12. It does not form.

As shown in FIG. 3, the sealing member 18 is formed of a paper material or a synthetic sub-material, and the like, and is formed to have a vehicle body elastic force so that the sealing member 18 is elastically deformed when the stopper is closed to be in close contact with the container inlet 12. ), A metal layer 26 attached to the lower surface of the elastic support layer 24 and formed of a metal material, in particular, aluminum, and a lower surface of the metal layer 26 to seal the sealing member 18. It consists of an adhesive layer 28 to be adhered to.

The sealing member 18 has the main body 16 mounted on the container inlet 12, and when the magnetic field of a constant intensity is applied (induction heating method), the metal layer 26 is heated and the adhesive layer 28 is rusted. While being attached to the container inlet (12).

A male screw portion 30 is formed on the outer circumferential surface of the container inlet 12, and a female screw portion 32 is formed on the inner circumferential surface of the body 16 so that the stopper is mounted on the container inlet 12 when the main body 16 is turned. It is separated from the container inlet 12. In addition, a skirt 34 connected by a plurality of bridges that are easily broken may be formed at a lower end of the main body 16 so that the main body 16 may be mounted at the container inlet 12. At this time, the skirt 34 is mounted to the container inlet 12 in a state of being caught by the protrusion formed in the container inlet 12, as shown in FIG. The skirt 34 is torn apart when the main body 16 is rotated to separate the main body 16 and the container inlet 12. On the outer circumferential surface of the main body 16, protrusions 36 having concave-convex shapes are formed in the circumferential direction so as to easily hold and rotate the main body 16 by hand.

On the other hand, the main body 16 may be coupled in a snap-type opening and closing by pressing in addition to the container inlet 12 and screwed. That is, a protrusion (not shown) protruding to an outer circumferential surface is formed at the end of the container inlet 12, and the main body 16 may be configured to couple the protrusion. In this case, even when the main body 16 forms a snap coupling with the container inlet 12, when the main body 16 is separated from the container inlet 12, the sealing member 18 is built in the main body 16. It is separated from the inlet 12.

In addition, even when the main body 16 forms a snap coupling with the container inlet 12, the main body 16 may be rotated with respect to the container inlet 12 to separate the sealing member 18 from the container inlet 12 in advance. have.

The sealing member separating part is formed as a ring-shaped support protrusion 22 formed on the inner circumferential surface of the main body 16 to protrude inwardly of the main body 16 and inserted into the groove 20 formed at the container inlet 12. do. Of course, the groove 20 formed in the container inlet 12 is not necessarily formed in consideration of the plastic material, and may have a gentle concave or convex curve.

The support protrusion 22 is inserted into the groove 20 formed in the container inlet 12 and is positioned on the lower surface of the edge of the sealing member 18. Here, the sealing member 18 is formed to have a certain strength to be separated from the container inlet 12 by being caught by the support protrusion 22 when the main body 16 is raised as the main body 16 rotates It is preferable to be.

The support protrusion 22 is pushed upward when the main body 16 is raised to push the sealing member 18 upward so that the sealing member 18 is separated from the container inlet 12.

Looking at the process of mounting the container stopper according to the present invention configured as described above in the container inlet 12, first, the sealing member 18 laminated in a plurality of layers is inserted into the main body 16. That is, when the sealing member 18 is pushed into the main body 16, the sealing member 18 is bent by its elastic force and passes through the support protrusion 22 to be positioned on the upper inner surface of the main body 16. Then, it is prevented by being caught by the support protrusion 22 to be separated to the outside.

In this way, the container cap into which the sealing member 18 is inserted is mounted at the container inlet 12. Then, the adhesive layer 28 applied to the lower end of the sealing member 18 is in close contact with the upper end of the container inlet 12. In this state, when a magnetic field having a constant intensity is applied (induction heating method), heat is generated in the metal layer 26, and the adhesive layer 28 is melted by the heat generated in the metal layer 26, and the upper surface of the container inlet 12 is formed. It is attached to protect the contents stored in the container (10).

At this time, the support protrusion 22 formed in the main body 16 is inserted into the groove 20 formed in the container inlet 12, the edge of the sealing member 18 on the upper side of the support protrusion 22 Is located.

The process of separating the plug attached to the container inlet by the above-described process from the container inlet will be described below.

4 is a cross-sectional view showing a container cap according to the present invention separated from the container inlet.

When the main body 16 is rotated in the open direction, the skirt 34 is torn off and the main body 16 is separated from the container inlet 12, and the main body 16 is raised.

At this time, the support protrusion 22 formed on the inner surface of the main body 16 is raised with the main body 16 to apply a force to the edge of the sealing member 18. Then, the adhesive layer 28 of the sealing member 18 is separated from the container inlet 12 while the sealing member 18 is separated from the container inlet 12. In addition, the sealing member 18 is held by the support protrusion 22 to maintain a state stored in the main body 16.

As such, when the main body 16 is rotated in the opening direction, the sealing member 18 is stored at the inside of the main body 16 while being separated from the container inlet 12, so that the sealing member 18 does not need to be pulled apart and is convenient to use. Do.

Then, when the main body 16 is rotated in the direction of closing the container inlet 12 again, the sealing member 18 is in close contact with the container inlet 12 to protect the contents stored in the container 10.

5 is a cross-sectional view showing a second embodiment of the container cap according to the present invention, Figures 6a and 6b is a cross-sectional view of the A-A line of FIG.

The container closure according to the second embodiment is the same as the container closure described in the above embodiment, except that the structure of the sealing member separating portion and the sealing member is formed differently.

That is, the sealing member separating part according to the second embodiment is formed in the circumferential direction inside the main body 16 and is inserted into the groove 20 formed at the lower surface of the sealing member 40 and formed in the container inlet 12. The support protrusions 42 supported by the edge of the sealing member 40 and the upper side of the support protrusions 42 are positioned at regular intervals and are formed at equal intervals in the circumferential direction on the edge of the sealing member 40. When the main body 16 is rotated by the locking protrusion 46, the sealing member 40 is rotated together so that the sealing member 40 is more easily separated from the container inlet 12 by the rotating protrusion 44. It is composed.

As shown in FIGS. 6A to 6B, the sealing members 40 are formed with equally spaced protrusions 46 at their edges in the circumferential direction. The shape of the locking projections 46 may be formed in various forms such as irregularities or inclined in one direction.

In addition, the sealing member 40 is preferably formed to have a certain strength so that the rotation projection 44 is inserted to rotate the sealing member 40.

The operation of the container closure according to the second embodiment configured as described above will be described below.

First, when the main body 16 is mounted at the container inlet 12, the support protrusion 42 formed at the inner circumferential surface of the main body 16 is inserted into the groove 20 formed at the container inlet 12, and the edge of the sealing member 40 is provided. It is located on the bottom surface. In addition, the rotation protrusion 44 is in a state of being engaged with the locking protrusion 46 formed on the outer circumferential surface of the sealing member.

When the main body 16 is rotated in this state, the rotation protrusion 44 is rotated in a state of being caught by the locking protrusion 46 of the sealing member 40, thereby pushing the locking protrusion 46 of the sealing member 40. Then, the adhesive layer 28 of the sealing member 40 is torn off at the container inlet 12 by the pushing force of the rotating member 44 by the sealing member 40. When the main body 16 is further rotated, the support protrusion 42 is raised to push the sealing member 40 upward. Then, the sealing member 40 is separated from the container inlet 12 in a state of being locked to the support protrusion 42, and maintains the state stored in the main body 16.

As described above, in the container closure according to the second embodiment, the rotary protrusion 44 rotates the sealing member 40 so that the adhesive layer 28 of the sealing member 40 is torn off at the container inlet 12, and the support protrusion ( 42 to lift the sealing member 40 to be separated from the container inlet 12 and to be stored in the body 16, it is possible to more stably separate the sealing member 40 from the container inlet.

7 is a cross-sectional view of the container cap according to the third embodiment of the present invention.

The container stopper according to the third embodiment is the same as the container stopper described in the above embodiment, except that the sealing member 60 can be more stably separated from the container inlet 12. 12) has a sealing member engaging unit (70) coming out from.

The sealing member locking unit 70 is disposed on the inside of the main body 16 so as to be movable upward and downward, and is formed on a lower surface of the pressing plate 72 and a pressing plate 72 which is moved downward when the user presses the pressing plate 72. When pressing 72, the sealing member 60 penetrates and is connected between the engaging portion 74 which is caught on the lower surface of the sealing member 60, and the outer circumferential surface of the pressing plate 72 and the inner circumferential surface of the main body 16. The pressing plate 72 is configured to be guided to move in the vertical direction and the connection portion 76 for supporting the moved position of the pressing plate 72 by its own elastic force.

The pressing plate 72 is formed in the shape of a disc having a diameter smaller than the inner diameter of the main body 16.

As shown in FIG. 8, the locking portion 74 extends downwardly from the center of the lower surface of the pressing plate 72 and presses the pressing plate 72 to support and penetrate the sealing member 60. At least one end of the support rod 80 is formed on an outer circumferential surface thereof, and includes a locking protrusion 82 to which the sealing member 60 is locked so that the sealing member 60 is stored in the main body 16.

Here, the support rod 80 is formed in the shape of a circular rod that is formed to extend at a right angle in the lower direction from the center of the pressing plate 72, the end portion is formed so as to penetrate through the sealing member 60 Punch portion 84 is formed.

The locking projection 82 is formed in a shape that is capable of elastic deformation that can be bent in an upward direction, while penetrating the sealing member 60 while being bent upwards while passing through a hole drilled by the punch portion 84. After entering the inside of the sealing member 60 and entering the inside of the sealing member 60 is unfolded in the original state is caught on the inner surface of the sealing member 60.

The locking protrusion 82 is formed to extend in a direction perpendicular to the outer circumferential surface of the support rod 80 by a predetermined length, and formed at least one or more on the outer circumferential surface of the support rod 80. The locking protrusion 82 is preferably configured in a pair with an interval of 180 degrees on the outer peripheral surface of the support rod (80).

The sealing member 60 is composed of an elastic support layer 24, a metal layer 26, and an adhesive layer 28, as described in one embodiment, so that the engaging portion 74 is easy to penetrate into the elastic member The support layer 24 is provided with a through hole 78 through which the locking portion 74 passes.

That is, when the pressing plate 72 is pressed, the locking portion 74 penetrates through the metal layer 26 through the through hole 78 formed in the elastic support layer 24.

The connecting portion 76 is formed of a thin film of a dome shape that connects the inner circumferential surface of the main body 16 and the outer circumferential surface of the pressing plate 72, and the pressing plate 72 is elastically deformed when the pressing plate 72 is pressed by a predetermined force or more. Guide 72 to move downward.

The connection portion 76 elastically maintains the current position of the pressing plate 72. That is, when the pressing plate 72 is positioned to protrude upward, which is a position that is not pressed, the connection portion 76 maintains the current position of the pressing plate 72 while maintaining the convex dome shape. Then, pressing the pressing plate 72 by a predetermined force or more maintains the pressing position of the pressing plate 72 while being elastically deformed in a concave shape.

In another embodiment, the connecting portion 76 is composed of an S-shaped guide rib between the pressing plate 72 and the inner surface of the main body 16, and the pressing plate 72 expands when the pressing plate 72 is moved downward. The guide plate is moved downward and the pressing plate 72 is maintained connected to the main body 16.

The operation of the container closure according to the third embodiment of the present invention configured as described above will be described below.

8 and 9 is an operation state diagram of the container cap according to the third embodiment of the present invention.

First, when the pressing plate 72 is pushed downward, the connecting portion 76 is elastically deformed and the pressing plate 72 is moved downward. Then, the support rod 80 of the locking portion 74 penetrates through the center of the sealing member 60. At this time, the through hole 78 is formed in the elastic support layer 24 of the sealing member 60 so that the locking portion 74 can more easily penetrate the sealing member 60.

The locking protrusion 82 of the locking portion 74 is bent upward when entering the sealing member 60 and enters the hole punched by the punch portion 84 of the support rod 80. When the locking protrusion 82 enters the inside of the sealing member 60, the locking protrusion 82 is positioned on the inner surface of the sealing member 60 in a state in which it is elastically deformed and unfolded.

Then, when the main body 16 is rotated in the opening direction, the support protrusion 22 formed on the inner surface of the main body 16 is raised together with the main body 16 to apply a force to the edge of the sealing member 60. Then, the adhesive layer 28 of the sealing member 60 is separated from the container inlet 12 and the sealing member 60 is separated from the container inlet 12.

At this time, the sealing member 60 is separated from the container inlet 12 like the main body 16 because it is held by the support portion and maintains the state stored in the main body 16.

The container stopper according to the present invention constructed and operated as described above is provided with a sealing member removing unit inside the stopper, and then pressing the pressing plate of the sealing member removing unit and opening the stopper before opening the stopper to open the sealing member automatically at the container inlet. It is easy to use because it is removed.

In addition, since the sealing member removed from the container inlet by turning the stopper is stored inside the stopper, it is possible to prevent environmental pollution due to the sealing member being discarded to the outside.

In addition, since the sealing member is automatically removed by the sealing member removing unit, when the sealing member is removed by hand, a hygienic problem due to hand contact with the container inlet can be solved.

Claims (15)

A main body mounted at the container inlet through which contents stored in the container are discharged to the outside and having a space therein; A sealing member embedded in the main body and sealed at a container inlet; Is formed on the inner circumferential surface of the main body when the container is opened, including a sealing member separator for separating the sealing member at the container inlet and storing the separated sealing member inside the body. The method of claim 1, The container cap of the container inlet, characterized in that the groove is formed in the outer peripheral surface of the container recessed concave in the circumferential direction. The method of claim 2, The sealing member is attached to the upper surface of the container cap container closure, characterized in that the edge is arranged to extend outwardly from the top of the container cap. The method of claim 3, wherein The sealing member is formed of a paper material or a synthetic resin material and the like is formed to have a vehicle body elastic force to close the cap and elastically deformed while being in close contact with the container inlet, a metal layer attached to the lower surface of the elastic support layer and formed of aluminum material; And an adhesive layer applied to a lower surface of the metal layer to seal the sealing member to the container inlet. The method of claim 4, wherein The sealing member is a container cap, characterized in that the adhesive layer of the sealing member is attached to the container inlet by applying heat to the container inlet is inserted into the interior of the main body. The method of claim 2, The sealing member separating portion is formed to protrude inwardly on the inner circumferential surface of the main body is inserted into the groove formed at the container inlet and is located on the lower surface of the edge of the sealing member to push up the sealing member while being raised when the main body is separated from the container inlet. Container stopper, characterized in that to lift at the container entrance. The method of claim 2, The sealing member separating portion is formed in the circumferential direction of the inside of the main body and is located on the lower surface of the sealing member is inserted into the groove formed in the container inlet and the support projections supported on the edge of the sealing member; It is located at the upper side of the support projections at a predetermined interval is caught by a locking projection formed at equal intervals in the circumferential direction at the edge of the sealing member is rotated by the rotating projection to rotate the body to separate the sealing member from the container inlet Container stopper, characterized in that configured. The method of claim 7, wherein The sealing member is a container stopper, characterized in that the engaging projections are formed at equal intervals in the circumferential direction at the edge, the locking projections are formed in any one of the shape of the irregularities or inclined in one direction. A main body mounted at the container inlet through which contents stored in the container are discharged to the outside and having a space therein; A sealing member embedded in the main body and sealed at a container inlet; A sealing member separator formed on an inner circumferential surface of the main body to open the main body to separate the sealing member from the container inlet and to store the separated sealing member inside the main body; The container stopper characterized in that it comprises a sealing member engaging unit is formed in the main body when the pressing operation penetrates the sealing member to be caught on the inner surface of the sealing member. The method of claim 9, A groove is formed at an upper end of the container inlet, the outer circumferential surface of which is concave concave in the circumferential direction, and the sealing member is bonded to the upper surface of the container stopper and the edge thereof is disposed to extend outward from the top of the container stopper. Container stopper made with. The method of claim 10, The sealing member is formed of a paper material or a synthetic resin material and the like is formed to have a vehicle body elastic force to close the cap and elastically deformed while being in close contact with the container inlet, a metal layer attached to the lower surface of the elastic support layer and formed of aluminum material; And an adhesive layer applied to the lower surface of the metal layer to bond the sealing member to the container inlet. Container closure, characterized in that the through hole is formed in the elastic support layer to pass through the sealing member engaging unit. The method of claim 10, The sealing member separating portion is formed to protrude inwardly on the inner circumferential surface of the main body is inserted into the groove formed at the container inlet and is located on the lower surface of the edge of the sealing member to push up the sealing member while being raised when the main body is separated from the container inlet. Container stopper, characterized in that to lift at the container entrance. The method of claim 9, The sealing member engaging unit is disposed in the inside of the main body to be movable in the vertical direction and the pressing plate which is moved in the lower direction when the user presses; A catching part formed on a lower surface of the pressing plate and pressing the pressing plate to penetrate a sealing member to be caught by a lower surface of the sealing member; A container stopper, characterized in that it is connected between the outer circumferential surface of the pressing plate and the inner circumferential surface of the main body to guide the pressing plate to move up and down and to support the moved position of the pressing plate by its own elastic force. The method of claim 13, The locking portion extends downward from the center of the lower surface of the pressing plate and presses the pressing plate to support the sealing member through the sealing member; At least one end portion formed on the outer peripheral surface of the support rod container closure, characterized in that consisting of a locking projection to be locked to the sealing member so that the sealing member is stored in the body. The method of claim 13, The connecting portion is formed of a thin film in the form of a dome connected between the inner circumferential surface of the main body and the outer circumferential surface of the pressing plate, the container closure, characterized in that the pressing deformed by a predetermined force or more.

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