KR20220032500A - Sealing member - Google Patents

Abstract

According to one embodiment of the present invention, a sealing member is provided. The sealing member comprises: an intermediate body that is coupled to a container accommodating the contents therein and has a communication space, which is in communication with the container portion in the interior thereof; and a sealing portion that is provided on the inside of the intermediate body so as to seal the communication space and detachably coupled to the intermediate body, wherein the sealing portion and the intermediate body can be integrally formed by double injection.

Description

sealing member {SEALING MEMBER}

The present invention relates to a sealing member, and more particularly, to a content container with improved manufacturing convenience and sealing performance.

Makeup is to make the beautiful part of the body stand out, and furthermore, to make the appearance healthier and more beautiful by supplementing the weakness of the body, and various formulations and cosmetic ingredients are used to improve the feeling and efficacy. For example, moisture or volatile substances may be included in the contents to increase the soft and moist feeling of use or absorption, or skin active ingredients such as vitamins may be included.

As such various formulations or cosmetic ingredients are used, airtightness and sealing performance of cosmetic containers are important. This is because, if it is not reliably sealed, the formulation may change, such as hardening or cracking as the contents stored in the container are dried, or problems may occur in which the efficacy is reduced.

An object of the present invention is to solve the above problems, and an object of the present invention is to provide a sealing member with improved manufacturing convenience and sealing performance.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, a sealing member is provided. The sealing member may include: a middle body coupled to the container part in which the contents are accommodated, and provided with a communication space communicating with the container part on the inside; and a closure part provided inside the body to seal the communication space and detachably coupled to the body, wherein the closure part and the body may be integrally formed by double injection.

In addition, the material of the middle body may be relatively hard, and the material of the sealing part may be relatively soft.

In addition, the body and the sealing part may be made of different materials.

In addition, the material of the middle body may include a first material, and the material of the sealing part may include the first material and a second material different from the first material.

In addition, the first material may be at least one of polypropylene, polyethylene, and a combination of polypropylene and polyethylene, and the second material may be at least one of polypropylene, polyethylene, a thermoplastic elastomer, and a thermoplastic rubber.

In addition, the first material may be polypropylene, and the second material may be polyethylene.

In addition, a weight ratio of the first material and the second material in the sealing part may be 40:60 to 60:40.

In addition, the sealing portion, the sealing plate having a shape corresponding to the communication space; And it may include a traction part extending upwardly of the sealing plate.

In addition, the traction portion, a first traction extension extending from the closure plate to have a first angle with respect to the sealing plate and extending from the first traction extension portion to have a second angle with respect to the first traction extension portion and a second traction extension, wherein the second angle may be lower than the first angle.

In addition, a first bending point may be formed between the first pulling extension and the sealing plate, and a second bending point may be formed between the first pulling extension and the second pulling extension.

In addition, at least friction protrusions for facilitating gripping may be formed on one surface of the traction part.

In addition, the body may include a support portion extending inwardly from the inner surface of the body, and the support portion may be coupled to the sealing plate.

In addition, it further comprises a cover rotatably connected to the body to open and close the body, a predetermined area is recessed in the lower surface of the cover to form a traction part accommodating part, and when the cover is closed and rotated, the traction part accommodation At least a portion of the towing unit may be accommodated in the unit.

According to an embodiment of the present invention, a method of manufacturing a sealing member is provided. The method comprises the steps of: injection molding a middle body coupled with a container part in which the contents are accommodated, and having a communication space communicating with the container part on the inside; and injection molding a sealing part provided inside the body to seal the communication space and detachably coupled to the body, wherein the sealing part and the body may be integrally formed by double injection. there is.

According to the present invention, it is possible to improve the feeling of use by providing a sealing part for sealing the accommodation space inside the middle body to enhance sealing performance, but to allow the sealing part to be easily separated.

In addition, according to the present invention, by integrally manufacturing the sealing part and the middle body through double injection molding, it is possible to provide economical manufacturing efficiency and to firmly couple the sealing part and the middle body at the same time.

In addition, according to the present invention, the sealing portion is coupled along the inner circumference of the body, and by making the coupling area relatively narrow, the sealing portion can be easily separated from the body.

In addition, according to the present invention, by changing the material of the sealing part and the middle body, while the middle is firmly coupled with the container part, the sealing part can be gently bent and separated from the middle body.

In addition, according to the present invention, the material of the middle body may include the first material, and the material of the sealing part includes the first material and the second material, so that the sealing part includes the first material in the same way as the middle body, double injection At the same time, it is possible to increase the bonding force with the middle body and at the same time include the second material not included in the middle body, so that the sealing part can be easily removed from the middle body. In particular, as compared to members having different materials to couple by increasing the coupling area, it is possible to stably couple to each other without significantly increasing the coupling area.

In order to more fully understand the drawings recited in the Detailed Description, a brief description of each drawing is provided.
1 is a perspective view of a sealing member according to an embodiment of the present invention.
2 is an exploded view of a sealing member according to an embodiment of the present invention.
3 is a cross-sectional view of a sealing member according to an embodiment of the present invention.
4 is a perspective view of a sealing member according to an embodiment of the present invention.
5 is a perspective view of a content container according to an embodiment of the present invention.
6 is a flowchart of a method of manufacturing a sealing member according to an embodiment of the present invention.

Hereinafter, exemplary embodiments according to the present invention will be described in detail with reference to the contents described in the accompanying drawings. The same reference numbers or reference numerals in each figure indicate parts or components that perform substantially the same functions. For convenience described below, the up, down, left and right directions are based on the drawings, and the scope of the present invention is not necessarily limited to the direction.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related items or any one of a plurality of related items.

The terms used herein are used to describe the embodiments, and are not intended to limit and/or limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, the terms include or have is intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features, number, or step , it should be understood that it does not preclude in advance the possibility of the presence or addition of an operation, component, part, or combination thereof.

Throughout the specification, when a part is said to be connected to another part, it includes not only a case in which it is directly connected, but also a case in which it is electrically connected with another element interposed therebetween. Also, when it is said that a part includes a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

1 is a perspective view of a sealing member according to an embodiment of the present invention, FIG. 2 is an exploded view of the sealing member according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of the sealing member according to an embodiment of the present invention.

1 to 3 , the sealing member 100 may include a body 110 and a sealing part 120 .

The middle body 110 may be coupled to the container part so as to surround at least a portion of the container part (not shown). For example, the middle body 110 may be combined with the spout at the top of the container, and for this purpose, it may be formed along the circumference of the container to correspond to the container. A communication space may be formed inside the body 110 . When the middle body 110 is combined with the container part, the communication space may communicate with the container part.

The sealing part 120 may be provided inside the body 110 to seal the communication space of the body 110 . In particular, the sealing part 120 may be detachably coupled to the body 110 . That is, while being coupled to the body 110 to close the communication space, it can be separated from the body 110 to open the communication space.

In an embodiment, the sealing part 120 and the body 110 may be made of different materials. For example, the middle body 110 may be made of relatively hard, and the sealing part 120 may be made of relatively soft. While the middle body 110 is firmly coupled to the container portion, the closing portion 120 is to be gently separated.

In an embodiment, in order to facilitate coupling and separation between the sealing part 120 and the body 110 , the sealing part 120 and the body 110 may be integrally formed by double injection. For example, the middle body 110 may be primary molded, and the sealing part 120 may be secondary molded thereto. Through this, the body 110 and the sealing part 120 are integrally formed to effectively seal the accommodation space, and the sealing part 120 can be easily separated from the body 110 . However, this is an example, and the body 110 and the sealing part 120 have an adhesive material, an external heat bonding in which heat is applied from the outside (via a heating/pressurizing member), and heat from the inside (via ultrasound, low frequency, etc.) It can be implemented through various methods such as heat-resistant bonding that is generated.

In an embodiment, the material of the middle body 110 may include the first material, and the material of the sealing part 120 may include the first material and the second material. That is, the sealing part 120 may include the first material in the same way as the middle body 110 , thereby increasing the bonding force with the middle body 110 during double injection. In addition, the sealing part 120 may include the second material not included in the body 110 , so that the sealing part 120 can be easily removed from the body 110 . Here, the first material may be, for example, at least one of polypropylene (PP), polyethylene (PE), and a combination of polypropylene and polyethylene, and the second material is, for example, polypropylene, polyethylene, thermoplastic elastomer ( TPE) and thermoplastic rubber (TPR), but is not limited thereto. For example, the first material may be polypropylene, and the second material may be polyethylene. In this case, the weight ratio of the first material and the second material in the sealing part 120 is, for example, 30: 70 to 70: 30, 40: 60 to 60: 40, 45: 55 to 55: 45, 70: 30 to 50: 50, 60: 40 to 50: 50, and the like. For example, the weight ratio of the second material in the sealing part 120 may be 60, 55, or 50 or less. However, the present invention is not limited thereto.

In an embodiment, the material of the body 110 may be, for example, at least one of polypropylene, polyethylene, and a combination of polypropylene and polyethylene. However, the present invention is not limited thereto. The material of the sealing part 120 may be, for example, at least one of polypropylene, polyethylene, thermoplastic elastomer, a combination of thermoplastic elastomer and polypropylene, thermoplastic rubber, a combination of thermoplastic rubber and polypropylene, and a combination of polypropylene and polyethylene. there is. However, the present invention is not limited thereto. In an embodiment, the material of the body 110 may be polypropylene, and the material of the sealing part 120 may be a combination of polypropylene and polyethylene. In this case, the weight ratio between polypropylene and polyethylene of the sealing part 120 is, for example, 30: 70 to 70: 30, 40: 60 to 60: 40, 45: 55 to 55: 45, 70: 30 to 50: 50, 60: 40 to 50: 50, and the like. For example, the weight ratio of polyethylene in the sealing part 120 may be 60, 55, or 50 or less. However, the present invention is not limited thereto.

In an embodiment, the body 110 may include at least one edge portion 111 . The edge portion 111 may be formed along the periphery of the body 110 , and one of the edge portions 111 may have a thread formed inside or outside. The screw thread may be screwed with the screw thread formed in the spout portion of the container. However, this is an example, and in addition to screw coupling, the body 110 and the container unit may be coupled to each other in various ways such as fitting coupling and fastening coupling. can be

In an embodiment, at least one cover (not shown) is directly or indirectly connected to the body 110 , and while rotating with respect to the body 110 , the container unit may be opened and closed.

In the embodiment, the sealing portion 120, the sealing plate 121 of a shape corresponding to the communication space; and a traction part 123 formed above the sealing plate 121 . Specifically, the sealing plate 121 has a shape corresponding to the communication space, is coupled to the inner surface of the body 110, it is possible to maintain the sealed state of the communication space. The traction part 123 is formed to extend upwards of the sealing plate 121 , and may be gripped by a user when the sealing plate 121 is separated. That is, the user can easily separate the sealing part 120 through the operation of holding and pulling the traction part 123 , and thus the communication space of the middle body 110 closed by the sealing part 120 can be opened. .

In an embodiment, the traction part 123 may be formed to extend from the sealing plate 121 to have a predetermined inclination in order to facilitate gripping and withdrawing. For example, the slope may be 20 to 60, 20 to 40, but is not limited thereto.

In an embodiment, the pull 123 may include at least one pull extension. For example, the first traction extension 123-1 extends from the sealing plate 121 to have a first angle with respect to the sealing plate 121, and the second traction extension 123-2 is the first traction extension. It may extend from the first traction extension 123-1 to have a second angle with respect to the extension 123-1. In this case, the first angle and the second angle may be different from each other. For example, the second angle may be lower than the first angle. In this way, by changing the angle of the traction part 123 with respect to the sealing plate 121 through at least one traction extension part, it is possible to provide a sufficient space in which the finger is inserted into the lower side of the traction part 123 . In addition, a bending point may be formed at the end of the traction extension. For example, the first traction extension 123-1 is formed with a first bending point at the end of the sealing plate 121 side, the first traction extension 123-1 and the second traction extension 123- A second bending point may be formed between 2). When the traction part 123 is towed or when the traction part 123 is pressed downward by the cover, the traction part 123 may be dispersedly bent around the first inflection point and the second inflection point.

In an embodiment, the traction part 123 may be formed in one region of the edges of the sealing plate 121 so that when the traction part 123 is drawn out, the sealing plate 121 is separated from the corresponding region in the opposite direction.

In an embodiment, at least one friction protrusion 125 may be formed on one surface of the traction unit 123 . This is to make gripping easier.

In an embodiment, the support 112 may be formed to extend inwardly on the inner surface of the body 110 . The support part 112 is formed along the inner circumference of the body 110 , and may be coupled to the sealing plate 121 of the sealing part 120 . In addition, when the impregnated member is accommodated in the container portion, the support 112 may support the impregnated member from the upper side to prevent separation of the impregnated member.

4 is a perspective view of a sealing member according to an embodiment of the present invention.

Referring to FIG. 4 , the sealing member 100 ′ may further include a cover 130 . The cover 130 may open and close the body 110 while rotating with respect to the body 110 . Specifically, the cover 130 opens the communication space while rotating openly with respect to the middle body 110, and the cover 130 closes to the middle body 110 while closing and rotating with respect to the middle body 110 to seal the communication space. there is.

A predetermined area is recessed in the lower surface of the cover 130 to form the traction unit accommodating part 131 . At least a portion of the traction unit 123 may be accommodated in the traction unit accommodating part 131 when the cover 130 is closed and rotated. Through this, it is possible to prevent the sealing part 120 formed upward to have a predetermined inclination from being deformed or damaged while being excessively pressed by the cover 130 .

In an embodiment, the contact portion 132 may be formed to protrude below the cover 130 . When the cover 130 is closed and rotated, the inner contact portion 132 is in close contact with the middle body 110 , thereby further strengthening the sealing by the cover 130 .

In an embodiment, the cover 130 may be provided with a cover locking part 133 for fixing the cover 130 to the middle body 110 when the cover 130 is closed and rotated, and in response to this, the middle body 110 has A middle locking part 113 may be formed. For example, the cover locking part 133 may include a locking protrusion, and correspondingly, the middle locking part 113 may include a locking groove. However, this combination is exemplary, and the positions of the locking protrusions and the locking grooves in the cover locking part 133 and the middle locking part 113 are changed, or the cover locking part 133 and/or by a combination of the locking projections and the locking grooves. A middle locking part 113 may be formed. In addition, depending on the embodiment, the middle locking part 113 and the cover locking part 133 may be coupled to each other in various ways such as fitting coupling and engagement coupling.

In an embodiment, the grip part 134 may protrude from the cover 130 in the lateral direction. The user may rotate the cover 130 using the gripper 134 to open and close the accommodation space.

In an embodiment, an applicator receiving part may be formed on the upper side of the cover 130 . The applicator accommodating part may be formed by recessing the upper surface of the cover 130 downward, and the applicator (eg, puff, brush, etc.) may be accommodated. Additionally/alternatively, at least a portion of the applicator receptacle may contain contents. The content may be the same as or different from the content accommodated in the receiving space of the container unit.

5 is a perspective view of a content container according to an embodiment of the present invention.

Referring to FIG. 5 , the contents container 300 may include a sealing member 100 ′ and a container unit 200 .

The container unit 200 may have a receiving space with an open top for accommodating the contents. Here, the contents may be liquid, gel, or powder cosmetics. For example, the contents are lotion, milk lotion, moisture lotion, nourishing lotion, skin lotion, skin softener, skin toner, astringent, massage cream, nourishing cream, moisture cream, whitening essence, tone up cream, sunscreen, sunscreen, sun cream Milk, BB cream, base, foundation, CC cream, concealer, blusher, shading, eye shadow, eyebrow, eye cream, primer, and the like may be included. However, the present invention is not limited thereto, and various contents requiring sealing, such as other formulations or types of cosmetics, pharmaceuticals, foods, and various compounds or compositions, may be applied. The contents may be directly filled in the accommodation space, or may be filled in the accommodation space through an impregnating member made of a sponge, a plate, or the like.

In the embodiment, the container portion 200, the spout portion is open to the upper side and coupled to the middle body (110); And it is formed downward from the spout may include a content accommodating portion to form an accommodating space.

In an embodiment, a thread may be formed on the inside or outside of the spout. A screw thread is also formed in the middle body 110 to correspond to the screw thread of the spout, and can be screwed to each other. However, depending on the embodiment, the spout and the middle body 110 may be coupled to each other in various ways such as fitting coupling and fastening coupling other than screw coupling, and in this case, the configuration of protrusions, grooves, etc. can be used

In an embodiment, the content container 300 may further include an impregnating member. The impregnating member is disposed in the receiving space of the container unit 200, the contents may be impregnated. To this end, the impregnating member is made of, for example, a porous material, and the contents are impregnated into the impregnation space formed therein. When an external force is applied, the impregnated contents may be discharged.

Although not shown in FIG. 5 , according to an embodiment, the content container 300 may further include an outer cover. The outer cover may be rotatably connected to the body 110 to open and close the communication space of the body 110 . In order to prevent interference between the cover 130 and the outer cover, the cover 130 may be connected from the inside of the body 110 rather than the outer cover, and the outer cover may be connected from the outside of the body 110 compared to the cover 130 . there is.

Additionally/alternatively, although not shown in FIG. 5 , the contents container 300 may further include an outer container according to an embodiment. The outer container may form an accommodating space inside, so that at least a portion of the container part 200 is accommodated. In this case, the outer cover may be rotatably connected to the external container, not the middle body 110 , to open and close the accommodation space of the external container. However, the present invention is not limited thereto.

6 is a flowchart of a method of manufacturing a sealing member according to an embodiment of the present invention.

In step S610, a primary molding may be manufactured. The primary molding may be the middle body 110 . Step S610 is performed by injection molding, wherein the molding conditions are a temperature of 155 to 260 °C, a pressure of 25 to 60 kgf/cm ² , and a speed of 5 to 35 mm/s.

In step S620, a secondary molding may be manufactured. The secondary molding may be the sealing part 120 . Step S620 is performed by injection molding, wherein the molding conditions are a temperature of 155 to 265 °C, a pressure of 15 to 100 kgf/cm ² , and a speed of 3 to 55 mm/s.

Double injection molding may be performed by steps S610 and S620. Accordingly, through the injection molding process, the primary molding body 110 and the secondary molding sealing part 120 may be integrally formed with each other.

In an embodiment, in step S610, the material of the body 110 may include the first material, and in step S620, the material of the sealing part 120 may include the first material and the second material. That is, the sealing part 120 includes the first material in the same way as the middle body 110 , thereby increasing the bonding force with the middle body 110 during double injection, but including the second material not included in the middle body 110 . , so that the sealing part 120 can be easily removed from the body 110 . Here, the first material may be, for example, at least one of polypropylene, polyethylene, and a combination of polypropylene and polyethylene, and the second material may be, for example, at least one of polypropylene, polyethylene, thermoplastic elastomer, and thermoplastic rubber. However, it is not limited thereto. In an embodiment, the first material may be polypropylene and the second material may be polyethylene. In this case, the weight ratio of the first material and the second material in the sealing part 120 is, for example, 30: 70 to 70: 30, 40: 60 to 60: 40, 45: 55 to 55: 45, 70: 30 to 50: 50, 60: 40 to 50: 50, and the like. For example, the weight ratio of the second material in the sealing part 120 may be 60, 55, or 50 or less. However, the present invention is not limited thereto.

In an embodiment, the material of the middle body 110 in step S610 may be, for example, at least one of polypropylene, polyethylene, and a combination of polypropylene and polyethylene. However, the present invention is not limited thereto. The material of the sealing part 120 in step S620 is, for example, at least one of polypropylene, polyethylene, thermoplastic elastomer, a combination of thermoplastic elastomer and polypropylene, thermoplastic rubber, a combination of thermoplastic rubber and polypropylene, and a combination of polypropylene and polyethylene. can be one However, the present invention is not limited thereto. In an embodiment, the material of the body 110 may be polypropylene, and the material of the sealing part 120 may be a combination of polypropylene and polyethylene. In this case, the weight ratio between polypropylene and polyethylene of the sealing part 120 is, for example, 30: 70 to 70: 30, 40: 60 to 60: 40, 45: 55 to 55: 45, 70: 30 to 50: 50, 60: 40 to 50: 50, and the like. For example, the weight ratio of polyethylene in the sealing part 120 may be 60, 55, or 50 or less. However, the present invention is not limited thereto.

Hereinafter, the present invention will be described in more detail by way of embodiments and experimental examples. However, the following embodiments and experimental examples are merely illustrative of the present invention, and the content of the present invention is not limited by the following embodiments and experimental examples.

The sealing member was manufactured by using the material of the middle body and the sealing part as shown in Table 1 below. In Embodiment 1, the material of the middle body is polypropylene, and the material of the sealing part is a combination of polypropylene and polyethylene. In Comparative Examples 1 to 4, the material of the middle body was polypropylene, and the material of the sealing part was changed to polypropylene (PP), polyethylene (PE), thermoplastic elastomer (TPE), and thermoplastic rubber (TPR).

heavy material Seal material molding result Embodiment 1 pp PP+PE Good Comparative Example 1 pp pp Poor separation performance Comparative Example 2 pp PE bad bonding Comparative Example 3 pp TPE Poor adhesion and poor sealing Comparative Example 4 pp TPR Poor adhesion and poor sealing

Referring to Table 1, in Embodiment 1, the sealing part is made of a plurality of materials, one of which is the same as the material of the middle body. In the case of Embodiment 1, the sealing member was molded without collapsing or distorting the shape, and in particular, when the user applied force while the sealing part was coupled to the body, the sealing part could be easily separated from the body.

On the other hand, in Comparative Example 1, both the sealing part and the middle body had the same material (polypropylene), and according to this, the sealing part and the middle body were too tightly coupled, and a problem occurred that the sealing part was not separated from the middle body. When a very strong force is applied, the traction part is torn from the sealing plate, or a problem arises that a part of the sealing plate is torn.

In Comparative Example 2, the material of the middle body is polypropylene, and the material of the sealing part is polyethylene. In the case of Comparative Example 2, there was a problem that the sealing part was not properly coupled to the body. That is, it is not coupled or is easily separated even if it is coupled, so it is difficult for the sealing part to properly seal the middle body.

In Comparative Examples 3 and 4, the material of the middle body is polypropylene, and the material of the sealing part is a thermoplastic elastomer and a thermoplastic rubber, respectively. In this case, there was a problem in that the bonding surface was uneven and leakage occurred.

As in Comparative Examples 2 to 4, when the middle body and the sealing part are made of different materials, even by double injection, it is difficult to properly couple them, and in order to solve this, in the prior art, the bonding area had to be increased during double injection. However, as can be seen in Embodiment 1, since the middle body and the sealing portion share some material, they can be stably coupled to each other without significantly increasing the bonding area.

As described above, although the embodiments have been described with reference to the limited embodiments and drawings, various modifications and variations are possible from the above description by those skilled in the art. For example, even if the described techniques are performed in an order different from the described method, and/or each component is combined or combined in a form different from the described method, or is substituted or substituted by other components or equivalents, it is appropriate results can be achieved. In addition, each embodiment may be operated in combination with each other as needed. Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

100, 100': sealing member 110: middle body
111: edge portion 112: support portion
113: central locking portion 120: sealing portion
121: sealing plate 123: towing part
123-1: first traction extension 123-2: second traction extension
125: friction protrusion 130: cover
131: traction unit receiving unit 132: contact unit
133: cover locking portion 134: gripping portion
200: container unit 300: content container

Claims (14)

A sealing member comprising:
a middle body coupled to the container part in which the contents are accommodated, and provided with a communication space communicating with the container part on the inside; and
It is provided on the inside of the body to seal the communication space, and includes a sealing part detachably coupled to the body,
The sealing member and the body are integrally formed by double injection. The method of claim 1,
The material of the middle body is hard, and the material of the sealing part is soft, the sealing member. The method of claim 1,
The body and the sealing part are made of different materials from each other, a sealing member. The method of claim 1,
The material of the middle body includes a first material, and the material of the sealing part includes the first material and a second material different from the first material, the sealing member. 5. The method of claim 4,
The first material is at least one of polypropylene, polyethylene, and a combination of polypropylene and polyethylene,
The second material is at least one of polypropylene, polyethylene, a thermoplastic elastomer, and a thermoplastic rubber, the sealing member. 5. The method of claim 4,
The first material is polypropylene and the second material is polyethylene. 7. The method of claim 6,
A weight ratio of the first material and the second material in the sealing part is 40: 60 to 60: 40, the sealing member. The method of claim 1,
The sealing portion may include: a sealing plate having a shape corresponding to the communication space; and a traction part extending upwardly of the sealing plate. 9. The method of claim 8,
The traction portion may include a first traction extension extending from the closure plate to have a first angle with respect to the closure plate and a second traction extension extending from the first traction extension to have a second angle with respect to the first traction extension and a traction extension, wherein the second angle is less than the first angle. 10. The method of claim 9,
A closure member, wherein a first point of inflection is formed between the first pull extension and the sealing plate and a second point of inflection is formed between the first pull extension and the second pull extension. 9. The method of claim 8,
At least a friction protrusion for facilitating gripping is formed on one surface of the traction part, the sealing member. 9. The method of claim 8,
The body includes a support portion extending inwardly from the inner surface of the body, and the support portion is coupled to the sealing plate, the sealing member. 9. The method of claim 8,
It further comprises a cover rotatably connected to the body to open and close the body, a predetermined area is recessed in the lower surface of the cover to form a traction unit accommodating part, and when the cover is closed and rotated, the traction part accommodating part At least a portion of the traction portion is accommodated, the sealing member. A method for manufacturing a sealing member, comprising:
Injection molding of a middle body coupled to the container part in which the contents are accommodated, and provided with a communication space communicating with the container part on the inside; and
Doedoe provided inside the body to seal the communication space, comprising the step of injection molding the sealing part detachably coupled to the body,
The method of claim 1, wherein the closure and the body are integrally formed by double injection.

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