KR20230092240A - Dispensing cap with a flexible inner valve for container - Google Patents

Abstract

The present invention relates to a container cap having a flexible silicon valve for opening and closing the opening of the container and screwed to the bottleneck of various containers, in a state where the internal pressure of the container is not increased, the moving plate 210 of the silicon valve 200 ) is located in the space formed by the guide part 153 of the support ring 153 and the opening and closing piece 213 is maintained in a circular shape to prevent the outflow of the contents, and when the internal pressure of the container increases, the silicon valve ( While the deformable part 223 of 200 is guided by the guide part 153 and the moving plate 210 of the silicon valve 200 moves toward the opening of the container, the opening/closing piece 213 is elastically deformed and the incision is made. (211) It is characterized in that the contents flow out through the gap.
In particular, the silicon valve 200 according to the present invention is not easily deformed while the moving plate 210 is moved to the maximum lowered position and minimizes the deformation of the opening and closing piece 213, and at the same time, the moving plate 210 Even when the opening/closing piece 213 formed in the center is opened, in order to prevent the discharged contents from being smeared around the opening 132 of the lower cap 130, in configuring the moving plate 210, from the center to the edge It is configured so that the thickness becomes thicker as it goes, and it is composed of a hemispherical shape that is gently concave toward the inside of the container.

Description

Dispensing cap with a flexible inner valve for container}

The present invention relates to a container cap provided with a flexible silicon valve that opens and closes the opening of the container and screwed to the bottleneck of various containers, for example, beverages such as various juices and bottled water, ketchup, It relates to a container cap that allows food such as mayonnaise and soy sauce to be easily and easily sealed while being easily discharged.

A screw-type cap made of a general type synthetic resin has a built-in sealing sheet that is supported by touching the top of the bottleneck.

In the screw-type lid made of synthetic resin, the sealing sheet is made of a soft material such as rubber, which is fixed in such a way that it is attached or inserted. However, such a lid is added to the work process to assemble the sealing sheet, and as a result, productivity is lowered and the fixed state is unstable, so it is not in place and the sealing state is poor, so the sealing power is lowered, and these sealing sheets are recycled and used Since it is difficult to do, there is a problem of causing environmental pollution.

In addition, in the case of a container for storing mucous liquids such as various oils (eg, sesame oil or cooking oil) or honey, when discharging the contents, the mucous liquid flowing out through the outlet hole is not blocked cleanly when desired. Instead, it flows continuously while being elongated, so it flows down the outside of the container, causing unnecessary waste, and making the container sticky and disgusting to the user.

There are various prior documents related to container caps.

Among them, the container cap disclosed in Korean Utility Model Registration No. 20-0201671 (hereinafter referred to as 'prior art 1') is the inside of the lower cap 3 screwed into the opening of the container, as shown in FIG. A fixing groove 6 having a reverse locking jaw 7 is formed on the periphery to insert and fix the on-off valve, and on the inner periphery of the upper cap 4 protecting the upper part of the lower cap 3. A sealing member 8 is formed to seal the opening of the lower cap 3, and an on/off valve 5 is inserted into the fixing groove 6 on the inner periphery of the lower cap 3 to control the contents stored in the packaging container. In addition to fixing, the above-mentioned opening/closing valve is inserted into the inner periphery fixing groove of the lower cap and hooked to the upper end of the fixing groove to be fixed, and the silicon valve 10 is accommodated to accommodate the silicon valve It is composed of a valve housing 11 for fixing to the fixing groove.

The container cap according to the prior art 1 is configured on the inner periphery of the lower cap 3 by flipping the upper cap 4 on the lower cap 3 of the container 1 and then pressing the outer circumference of the body of the container 1 by the user. As the incision of the silicon valve 10 is opened, the contents stored in the container 1 can be discharged, and when the user removes the external force pressing the outer circumference of the body of the container 1, the inner circumference of the lower cap 3 As the incision of the silicon valve 10 is closed by restoring force, the opening is closed. By this operation, liquid or gel-like foods such as ketchup and mayonnaise can be easily withdrawn, and when the external force pressing the container is removed, the incision of the silicon valve 10 is closed by the restoring force, so the discharge of the contents is simply blocked. can make it

However, in the prior art 1 configured as described above, since the height of the container cap increases, not only inconvenience in use and restriction of storage space follow, but also increases the consumption of raw materials for manufacturing the container cap, which is a factor in cost increase. .

KR 10-1374244 B1 KR 10-2001-0082480 A KR 20-0201671 Y1

The present invention has been made to solve the above problems, and when the sealing force is improved and the pressure inside the container is increased by applying an external force to the container, the contents are easily discharged. Conversely, when the external force applied to the container is removed An object of the present invention is to propose a container cap in which an opening and closing piece of a silicon valve is quickly closed.

In particular, the container cap according to the present invention increases the elastic restoring force of the opening and closing piece of the silicon valve, so that the content, which is a viscous liquid such as various oils or honey, is cleanly blocked when discharge is stopped, thereby improving convenience in use as well as preventing material waste. Its purpose is to provide a hygienic storage environment.

Furthermore, the container cap according to the present invention aims to prevent the contents discharged through the silicon valve 200 from being buried around the opening 132 of the lower cap 130.

In addition, the container cap according to the present invention aims to improve airtightness so that contents are not discharged through the silicon valve 200 when the upper cap 140 is closed.

In order to achieve the above object, the container cap according to the present invention,

a lower cap 130 having a body portion 131 screwed to the outer circumferential surface of the bottle neck of the container 1 and a circular opening 132 through which contents inside the container flow out;

an upper cap 140 that is foldably coupled to the outer periphery of the lower cap 130 and opens and closes an opening of the lower cap 130;

A moving plate 210 provided in the opening 132 of the lower cap and moving up and down according to a change in pressure inside the container formed by an external force pressing the container, and an opening 132 of the lower cap on the outer circumferential surface of the moving plate 210. ), and has a fixing part 220 fixed to the bottom surface of the opening 132a, and a cutout 211 is formed in the center to block the outflow of the contents inside the container and press the container when there is no external force to press the container. a silicon valve 200 having an opening/closing piece 213 that allows the contents to flow through the gap of the incision 211 when the pressure is applied;

Inside the lower cap 130, an annular support ring fastening portion 135 extending into the container is provided, and an insertion groove 137 is formed on an inner circumferential surface of the support ring fastening portion 135;

A container cap comprising a ring-shaped locking protrusion 155 on an outer circumferential surface, and a support ring 150 for fixing the fixing part 220 in close contact with the opening bottom surface 132a by inserting the locking protrusion 155. in

The silicon valve 200 includes an extension part 221 extending from the fixing part 220 toward the center of the opening of the container, and a deformable part 223 extending from the extension part 221 while being bent toward the inside of the container, The moving plate 210 is integrally connected to the end of the deformable part 223,

The support ring 150 has a cylindrical guide part 153 extending into the container while surrounding the outer periphery of the deformable part 223 of the silicon valve 200, By protecting the deformable part 223 of the silicon valve 200 and stably guiding the rising or falling of the moving plate 210,

In a state where there is no increase in the internal pressure of the container, the moving plate 210 of the silicon valve 200 is located in the space formed by the guide part 153 of the support ring 153 so that the opening and closing piece 213 is circular. The outflow of the contents is prevented by being maintained, and when the internal pressure of the container increases, the deformable part 223 of the silicon valve 200 is guided by the guide part 153 and the moving plate of the silicon valve 200 As 210 moves to the opening of the container, the opening/closing piece 213 is elastically deformed so that the contents flow out through the gap of the cutout 211.

In particular, the deformable part 223 of the silicon valve 200 is configured to have a length d1 equal to or greater than the height d2 from the opening bottom surface 132a to the opening end 132c, thereby increasing the pressure inside the container. When the contents are discharged, the opening and closing piece 213 of the silicon valve 200 is at the same position as the opening end 132c of the lower cap 130 or more exposed than the opening end 132c of the lower cap 130. characterized by one.

In addition, by configuring the thickness of the moving plate 210 of the silicon valve 200 to be equal to or thicker than the thickness of the deformable portion 223, the movement when the pressure inside the container increases. The plate 210 is deformed by the opening/closing piece 213 of the moving plate 210 after the elastic deformation is completed in the direction in which the deformable part 223 passes through the opening 132 and extends outward in a state in which there is no deformation. (ie, open).

In addition, in order to maximize the interaction effect of each part of the silicon valve 200, that is, the deformable part, the moving plate, and the opening/closing piece, the silicon valve 200 according to the present invention has a specific range of physical properties. to be

Another problem to be solved in the present invention and its specific solution will be described in more detail in 'specific contents for carrying out the invention' and accompanying drawings to be described later.

The container cap according to the present invention not only improves the sealing power, but also allows the contents to be discharged very easily just by applying an external force to the container to increase the internal pressure, and when the external force is removed from the container, the opening and closing piece of the silicon valve Since it is quickly sealed, leakage of the contents does not occur, so that waste of the contents can be reduced and a clean sanitary environment can be provided.

In particular, the container cap according to the present invention, by increasing the elastic restoring force of the opening and closing piece of the silicon valve, can quickly and accurately block discharge even in the case of various oils or viscous liquid contents such as honey.

In particular, due to the fast and reliable discharge blocking effect, not only the contents discharged through the silicon valve 200 do not get around the opening 132 of the lower cap 130, but also the contents when the upper cap 140 is closed. It is possible to improve the sealing property that is not discharged through the silicon valve 200.

Another function and effect of the present invention will be described in more detail in 'Specific Contents for Carrying Out the Invention' to be described later.

1 is an explanatory view showing a container cap disclosed in Prior Art 1
Figure 2 is an exploded perspective view showing a container cap according to a preferred embodiment of the present invention
Figure 3 is an exploded cross-sectional view of the container cap according to a preferred embodiment of the present invention
Figure 4 is a combined cross-sectional view of the container cap according to a preferred embodiment of the present invention
5 is a detailed view of a silicon valve according to a preferred embodiment of the present invention
Figure 6 is an operation explanatory diagram of the container cap according to a preferred embodiment of the present invention
Figure 7 is a cross-sectional view showing a state in which the upper cap is closed in the container cap according to a preferred embodiment of the present invention

Since the present invention can have various changes and various forms, the implementation examples (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

In addition, the components in each drawing are expressed in exaggeratedly large (or thick) small (or thin) or simplified expressions in size or thickness in consideration of convenience of understanding, etc., but the scope of protection of the present invention is thereby limited. It shouldn't be. In particular, the cutout 211 of the silicon valve 200 to be described later is shown exaggeratedly than in reality.

Terms used in this specification are only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as ~comprising~ or ~consisting of are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

In describing the container cap according to the present invention with the accompanying drawings,

For convenience, if the approximate direction reference is specified with reference to FIGS. 2 to 4 and 6, the direction from the opening 132 of the container 1 to the inside is defined as the inward direction, and the opening 132 from the inside of the container ) refers to the outflow direction of the contents flowing out through the outward direction or outward direction. And in a preferred embodiment of the present invention, the container 1, the lower cap 130 and the upper cap 140, the support ring 150, and the silicon valve 200 have a cylindrical shape having the same central axis, the central axis A direction approaching the axis is defined as an inward direction, and a direction away from the central axis is defined as an outward direction.

In addition, in the description of FIGS. 2 to 5, the direction toward the opening 132 inside the container is defined as the upper direction, and the opposite direction is defined as the lower direction, and the surface facing the upper direction is defined as the upper surface and the surface facing the lower direction. is called the lower surface or bottom surface. However, in the description of FIG. 6 showing the operation process of discharging the contents inside the container, since the contents are discharged by turning the container upside down, the outflow direction of the contents flowing out through the opening 132 inside the container is downward, The opposite direction is referred to as the upward direction, and this criterion is limited to the description of the process of discharging the contents inside the container.

Hereinafter, a container cap according to the present invention will be described in detail with reference to the accompanying drawings showing a preferred embodiment.

First, Figure 2 is an exploded perspective view showing a container cap according to a preferred embodiment of the present invention, Figure 3 is an exploded cross-sectional view of the container cap according to a preferred embodiment of the present invention, Figure 4 is according to a preferred embodiment of the present invention It is a cross-sectional view of the container cap.

As shown in Figures 2 to 4, the container cap according to the present invention,

A lower cap 130 screwed to the outer circumferential surface of the bottleneck of the container 1, an upper cap 140 that opens and closes the opening of the lower cap 130, and a silicon valve 200 that opens and closes according to changes in the internal pressure of the container and a support ring 150 supporting an outer circumferential surface of the silicon valve 200.

The lower cap 130 includes a body portion 131 formed on an inner circumferential surface of a threaded portion capable of being screwed onto an outer circumferential surface of the bottleneck of the container 1, and a circular opening 132 through which contents inside the container flow out. ) is provided. An annular support ring fastening portion 135 extending inside the container 1 is formed inside the lower cap 130 so that a support ring 150 to be described later can be inserted and coupled thereto.

In addition, the upper cap 140 has a protrusion 146 caught in a groove 136 formed on an outer circumferential surface of the lower cap 130 to open and close the opening of the lower cap 130 . In general, the upper cap 140 and the lower cap 130 are formed to be foldable by having a cap connecting portion 147 connecting one outer circumferential surface to each other. In the embodiment of the present invention, the cap connection part 147 connecting the upper cap 140 and the lower cap 130 is configured in an 'L' shape, and the cap connection part 147 is in an open position or An elastic part 147a is formed to reliably ensure a closed state. In addition, a folded portion 148 is formed between the upper cap 140 and the lower cap 130 so that the upper cap 140 can be coupled to the correct position when coupled to the lower cap 130. .

The configuration of the silicon valve 200 having the most important function among the components of the present invention is largely a fixing part 220 fixed to the inner circumferential surface of the lower cap, a moving plate 210 that moves up and down according to changes in the pressure inside the container, It consists of a plurality of opening and closing pieces 213 formed in the center of the moving plate 210.

Figure 5 is a detailed view of the silicon valve 200 according to a preferred embodiment of the present invention, as shown in Figure 5, the silicon valve 200 is approximately horizontal in the fixing part 220 while opening the container It has an extension part 221 toward the center and a deformable part 223 that continues while being bent toward the inside of the container from the extension part 221, and at the end of the deformable part 223 is a disk-shaped moving plate 210 This is connected as a whole. The name of the part where the extension part 221 and the deformable part 223 having a vertical cylindrical shape meet is referred to as a bent part 222 for convenience.

A 'X' or '*' shaped incision 211 is formed at the center of the moving plate 210 to block the outflow of the contents inside the container when there is no external force pressing the container, and the external force pressing the container is applied. The container is provided with a plurality of opening and closing pieces 213 that allow contents to flow out through gaps in the cutout 211 while deformation occurs along the cutout 211 due to internal pressure of the ground container.

For reference, the width of the cutout 211 shown in FIG. 5 is excessively exaggerated for ease of understanding, and in reality, depending on the type of content, the cut surfaces of two adjacent opening and closing pieces 213 come into close contact while abutting each other. In the case of a container for powder, such as a width that can be, or pepper, red pepper powder, it can be deformed to a fine width to the extent that the above contents cannot be discharged.

And, the support ring 150 is a configuration for fixing the fixing part 220 of the silicon valve 200 to the inner circumferential surface of the lower cap,

The support ring 150 has a cylindrical guide part 153 extending into the container while surrounding the outer periphery of the deformable part 223 of the silicon valve 200, It protects the deformable part 223 of the silicon valve 200 and stably guides the rising or falling of the moving plate 210 .

And, in order to couple the support ring 150 to the inside of the lower cap 130, the outer circumferential surface of the support ring 150 is provided with a protrusion 155. In addition, an annular support ring fastening portion 135 is formed inside the lower cap 130 and extends into the container, and an insertion groove 137 is provided on the inner circumferential surface of the support ring fastening portion 135. The protrusion 155 of the support ring 150 may be fixed while spanning the insertion groove 137 .

With this configuration, in the container cap according to the present invention, in a state where there is no increase in internal pressure of the container 1, the moving plate 210 of the silicon valve 200 moves along the guide part 153 of the support ring 153. ) is located in the space formed by the opening and closing piece 213 is maintained in a circular shape to prevent the outflow of the contents,

When the internal pressure of the container increases, the deformable part 223 of the silicon valve 200 is guided by the guide part 153 and the moving plate 210 of the silicon valve 200 moves to the opening of the container to open and close the container. As the piece 213 is elastically deformed, contents flow out through the gap of the cutout 211 .

In addition, it is preferable to further include a deformation preventing portion 143 protruding toward the inside of the container at the center of the inner bottom surface of the upper cap 140 to prevent deformation of the silicon valve 200 . As described above, the deformable part 223 of the silicon valve 200 according to the present invention is pushed to the opening of the container when the pressure inside the container increases in the original position (inside the guide part 153 of the support ring 153). It is deformed while going, and it is preferable to prevent the silicon valve 200 from being deformed even if the pressure inside the container increases in a situation unintended by the user, for example, in a state in which the upper cap 140 is closed.

In order to compensate for this problem, in the container cap according to a preferred embodiment of the present invention, the deformation preventing part 143 formed in the center of the inner surface of the top cap 140 is connected to the moving plate 210 of the silicon valve 200. By being inserted into the space formed by the deformation part 223, the deformation prevention part 143 limits the deformation of the silicon valve 200 even if the pressure inside the container increases when the upper cap 140 is closed.

In addition, the upper cap 140 further includes a sealing portion 141 corresponding to the shape of the opening 132 of the lower cap 130, so that the sealing portion 141 By ensuring that the outer circumferential surface of the lower cap 130 is tightly coupled to the inner surface 132b of the opening of the lower cap 130, air contact of the contents can be prevented, thereby improving preservation.

Figure 6 shows the deformation state of the silicon valve 200 according to the present invention sequentially to explain the operating state of the container cap according to a preferred embodiment of the present invention.

[A] of FIG. 6 shows a state in which the container is turned upside down with the top cap 140 open, and shows a state in which no external force is applied to the container 1. The [A] drawing of FIG. 6 is the same as the state in which FIG. 5 is turned over.

6 [B] shows a state in which force starts to act on the silicon valve 200 according to the present invention, a state in which the contents inside the container 1 press the moving plate of the silicon valve 200 by gravity Alternatively, it may be in a state in which an external force is applied to the container.

When force starts to act on the silicon valve 200 from inside the container, as shown in [B] of FIG. 6, the moving plate 210 of the silicon valve 200 gradually moves downward while being pushed by the force inside the container At this time, as the position of the moving plate 210 changes, the deformable part 223 integrally formed on the outer circumferential surface of the moving plate 210 moves together, and the position of the bent part 222 also starts to change do.

[C] of FIG. 6 shows a state in which the moving plate 210 reaches the maximum lowered position by the force applied to the silicon valve 200 from the inside of the container, and the deformation of the deformable part 223 is completed However, it is shown in a state where the deformation of the opening and closing piece 213 has not started.

It is preferable to prevent the discharged content from being buried around the opening 132 of the lower cap 130 by opening the opening and closing piece 213 after the moving plate 210 is moved to the maximum lowered position. For this reason, it is important to make the moving plate 210 thicker than the thicknesses of the extension part 221, the bent part 222, and the deformed part 223.

In particular, in the embodiment according to the present invention, the moving plate 210 is not easily deformed while moving to the maximum lowered position, and the deformation of the opening and closing piece 213 is minimized, and at the same time, the center of the moving plate 210 Even when the opening and closing piece 213 formed on the opening is opened, in order to prevent the discharged contents from being buried around the opening 132 of the lower cap 130, in configuring the moving plate 210, from the center to the edge Another feature is that it is configured to be thick and configured in a hemispherical shape that is gently concave toward the inside of the container.

Furthermore, in the embodiment according to the present invention, the deformable portion 223 of the silicon valve 200 is configured to have a length d1 equal to or greater than the height d2 from the opening bottom surface 132a to the opening end 132c. By doing so, another feature is that the contents to be discharged are not buried around the opening 132 of the lower cap 130.

[D] of FIG. 6 shows a state in which the opening and closing pieces 213 are opened and contents are discharged after the moving plate 210 is moved to the maximum lowered position. In order to allow the opening operation of the opening/closing piece 213 shown in [D] of FIG. 6 to be performed after the operation shown in [C] of FIG. Although it is also possible to configure the deformation part 223 to be elastically deformed first by molding it thicker, the length L of the opening and closing piece 213 (i.e., the length of the cutout), the number of opening and closing pieces, and the silicon valve It is a factor that should be comprehensively considered, including the material properties of

The properties of the silicon valve 200 according to a preferred embodiment of the present invention are as follows. First, the shore hardness (Shore A) to increase operational reliability by securing elastic deformation and restoring force is in the range of 26 to 35, and the internal tearing strength to secure the durability of the opening and closing piece 213 formed by the incision is 20.0 ~ 22.4 N / mm (specimen shape is based on DIE C), and the percentage of elongation (percentage of elongation) is limited to the range of 720 ~ 850%. .

Due to these characteristics, it is possible to stably open the silicon valve 200 by elastic deformation, and furthermore, it is possible to block and seal the discharged contents by a strong restoring force.

[E] of FIG. 6 exemplarily shows a deformed form of the silicon valve 200 when the force applied to the silicon valve 200 from the inside of the container is large. When a large pressure is applied to the inside of the container, the moving plate 210, initially in a gently concave hemispherical shape toward the inside of the container, is overturned and transformed into a convex hemispherical shape. That is, further deformation is made in the outer direction of the container with the second bent portion 232 shown in [E] in FIG. Since the container is more greatly deformed in the outer direction, a large amount of contents are discharged.

7 is a cross-sectional view showing a state in which the top cap is closed in the container cap according to a preferred embodiment of the present invention. It can be confirmed that the lower cap 130 is tightly coupled to the inner surface 132b of the opening, and the deformation prevention part 143 formed in the center of the inner surface of the upper cap 140 is the moving plate of the silicon valve 200. It is inserted into the space formed by 210 and the deformable part 223, and shows that the silicon valve 200 is not deformed even when the pressure inside the container increases when the upper cap 140 is closed.

In the above description of the present invention, the preferred embodiments have been described with reference to the accompanying drawings, but the present invention can be variously modified, changed, and replaced by those skilled in the art, and these modifications, changes, and replacements fall within the protection scope of the present invention. should be construed as belonging to

1: Courage
130: lower cap
131: body 132: opening
132a: opening bottom surface 132b: opening inner surface
132c: opening end 135: support ring fastening part
136: groove 137: insertion groove
140: upper cap
141: sealing part 143: deformation prevention part
146: protrusion 147: cap connection
148: folding part
150: support ring
153: guidance unit 155: stumbling block
156: seating part 157: support part
200: silicon valve
210: moving plate 211: incision
213: opening and closing piece 220: fixing part
221: extended portion 222: bent portion
223: deformation part

Claims (4)

a lower cap 130 having a body portion 131 screwed to the outer circumferential surface of the bottle neck of the container 1 and a circular opening 132 through which contents inside the container flow out;
an upper cap 140 that is foldably coupled to the outer periphery of the lower cap 130 and opens and closes an opening of the lower cap 130;
A moving plate 210 provided in the opening 132 of the lower cap and moving up and down according to a change in pressure inside the container formed by an external force pressing the container, and an opening 132 of the lower cap on the outer circumferential surface of the moving plate 210. ), and has a fixing part 220 fixed to the bottom surface of the opening 132a, and a cutout 211 is formed in the center to block the outflow of the contents inside the container and press the container when there is no external force to press the container. a silicon valve 200 having an opening/closing piece 213 that allows the contents to flow through the gap of the incision 211 when the pressure is applied;
An annular support ring fastening part 135 is provided inside the lower cap 130 and extends into the container, and an insertion groove 136 is formed on an inner circumferential surface of the support ring fastening part 135;
A container cap comprising a ring-shaped locking protrusion 155 on an outer circumferential surface, and a support ring 150 for fixing the fixing part 220 in close contact with the opening bottom surface 132a by inserting the locking protrusion 155. in
The silicon valve 200 includes an extension part 221 extending from the fixing part 220 toward the center of the opening of the container, and a deformable part 223 extending from the extension part 221 while being bent toward the inside of the container, The moving plate 210 is integrally connected to the end of the deformable part 223,
The support ring 150 has a cylindrical guide part 153 extending into the container while surrounding the outer periphery of the deformable part 223 of the silicon valve 200, By protecting the deformable part 223 of the silicon valve 200 and stably guiding the rising or falling of the moving plate 210,
In a state where there is no increase in the internal pressure of the container, the moving plate 210 of the silicon valve 200 is located in the space formed by the guide part 153 of the support ring 153 so that the opening and closing piece 213 is circular. The outflow of the contents is prevented by being maintained, and when the internal pressure of the container increases, the deformable part 223 of the silicon valve 200 is guided by the guide part 153 and the moving plate of the silicon valve 200 A container cap characterized in that as the opening and closing piece 213 is elastically deformed as the 210 moves to the container opening, the contents flow out through the gap of the cutout 211.
According to claim 1,
The deformable part 223 of the silicon valve 200 is configured to have a length d1 equal to or greater than the height d2 from the opening bottom surface 132a to the opening end 132c,
The moving plate 210 of the silicon valve 200 is made of a thickness equal to or greater than the thickness of the deformable portion 223, and the thickness gradually increases from the center to the edge of the moving plate 210,
The container cap, characterized in that the moving plate 210 of the silicon valve 200 is formed in a hemispherical shape that is gently concave toward the inside of the container.
According to claim 2,
At the center of the inner surface of the upper cap 140, a deformation preventing portion 143 corresponding to the shape of the space formed by the moving plate 210 and the deformation portion 223 of the silicon valve 200 is further provided, so that the upper cap When the 140 is closed, the silicon valve 200 is prevented from being deformed,
The upper cap 140 further includes a sealing portion 141 corresponding to the shape of the opening 132 of the lower cap 130, so that the outer circumferential surface of the sealing portion 141 when the upper cap 140 is closed. The container cap, characterized in that closely coupled to the inner surface (132b) of the opening of the lower cap (130).
According to claim 2 or 3,
The shore hardness (Shore A) of the silicon valve 200 is 26 to 35, the internal tearing strength is 20.0 to 22.4 N/mm (specimen shape is based on DIE C), and the percentage of elongation , 延伸率) is a container cap, characterized in that 720 to 850%.

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