KR102177076B1 - Cap for pet-containers in which end ring are simultaneously separated - Google Patents

Abstract

The present invention relates to an end-ring simultaneous-separation type PET container cap and, more specifically, to an end-ring simultaneous-separation type pet container cap, which can separate an end-ring at the lower side of a cap body together when separating the cap body (cap) provided at and coupled to an injection part of a PET container. According to the present invention, a PET cap provides a tight stoppering function for storing content and a sealing function for checking whether the cap has been opened in a state of being provided at and coupled to the injection part. The cap comprises: the cap body provided at and coupled to the injection part for tight stoppering in storing the content; and an end-ring integrally formed at the lower side of the cap body, restricted by a ring shaped protrusion protruding on the lower side of the outer circumference of the injection part, and performing a sealing function for checking whether the cap body has been opened while deforming a shape in a process of separating the cap body to be separated together with the cap body from the injection part.

Description

END RING ARE SIMULTANEOUSLY SEPARATED {CAP FOR PET-CONTAINERS IN WHICH END RING ARE SIMULTANEOUSLY SEPARATED}

The present invention relates to an end ring simultaneous separation type PET container lid, and more particularly, when the lid body (lid) attached to the injection portion of the PET container is separated, the end ring at the lower side of the lid body can be separated together. It relates to an end ring simultaneous separation type PET container lid.

The main characteristics of PET (polyethylene terephthalate) containers used today are, among other things, that they are light, transparent, and recyclable, which is gaining great popularity as a container for food and beverage.

Since the invention of the PET container, it was immediately utilized in the industry due to the boom of the carbonated beverage industry and the merits of materials, and around 1999, it enjoyed a boom to the extent that 100 billion bottles were produced per year. At first, most of them were used as containers for liquids such as beverages and sauces, but recently, they are used as various packaging materials such as eye drops and detergents as well as alcoholic beverages for beer and soju, and now they are approaching as essential to the living environment of consumers.

On the other hand, the injection part (spout) of the PET container is provided with a cap that provides a sealing function for identifying whether or not it is opened as well as a tight seal for preserving the contents (food and beverage, etc.).

Specifically, in a typical PET container, a lid is attached to the container body containing the contents and the injection part of the container body, and the outer circumference of the injection part of the container body has a spiral fastening for fastening the lid. It has an annular protrusion to prevent separation of the protrusion and the lid.

In addition, the lid is made of a lid body for sealing and sealing the injection portion of the container body and an end ring for sealing the lid body, and a spiral protrusion corresponding to the binding projection of the outer circumference of the injection unit on the inner circumference of the lid body Is formed, and a plurality of interference protrusions are formed on the inner circumference of the end ring, which are engaged with the annular protrusions on the outer circumference of the injection unit.

Therefore, even if the lid is rotated counterclockwise to separate it from the injection part of the PET container, the end ring maintains a constrained state as the interference protrusions of its inner circumference are caught by the annular protrusion of the outer circumference of the injection part. The ring remains in the PET container.

However, since the PET container and the lid are made of different materials of PET and PE (high density polyethylene; HDPE), in order to satisfy the recyclability (recycling) of the PET container, the lid and the end, which is a part of the lid, are different. It is desirable to separate all the rings and recover them as a single material as much as possible.

To this end, it has been separated from the PET container by cutting the end ring using a cutting tool such as scissors or nipper, but due to the hassle of the method, most PET containers are recovered with the end ring intact. Most of them are, and as a result, it is difficult to separate collection and is discarded as general waste, which has been a problem that causes waste of resources as well as environmental pollution.

In order to solve this problem, a structure for removing an end ring of a resin bottle cap and a container having the same has been disclosed through Korean Patent Publication No. 10-2012-0101626. The structure and the container provided with the same are formed by cutting a part of the ring stop upper flange (annular projection) that regulates the end ring in the injection portion into a slope shape to form a guide flange cutout (cutout), and the end ring When rotated, the end ring can be easily removed from the injection unit by allowing a plurality of protruding flaps (interfering protrusions) formed around the inner circumference of the end ring to escape from the guide flange cutout.

However, in order to achieve the structure of removing the end ring as described above, the guide flange must be formed, so there is a problem of lack of compatibility in that the injection part of the PET container must be manufactured in a different form than before. It is somewhat unreasonable to follow.

In the end, research and development for a PET container lid that can be separated (removed) together with the end ring in the process of separating the lid from the PET container without changing the shape of the PET container is required.

(Document 1) Korean Patent Application Publication No. 10-2012-0101626 (published on September 14, 2012) (Document 2) Republic of Korea Public Utility Model No. 20-2015-0001931 (released on May 20, 2015)

An object of the present invention is to solve the above problems, and in the process of separating the lid body (lid) from the injection part of the PET container, the shape of the end ring at the lower side of the lid body is induced, so that the lid body End-ring simultaneous separation type PET that loses the binding force of the end ring (interference protrusion formed on the inner circumference) due to the annular protrusion protruding from the outer circumference of the injection part, thereby allowing the end ring to be separated (removed) together. To provide a container lid.

In order to achieve the above object, the present invention is a lid of a PET container that provides a sealing function of checking whether or not to be opened as well as a tight seal for preservation of the contents in a state equipped with an injection unit, wherein the lid is A lid body provided and coupled to the injection unit for tightness; And, integrally formed under the lid body, constrained by an annular protrusion protruding under the outer circumference of the injection part, and exhibits a sealing function of determining whether the lid body is opened, while in the process of separating the lid body by a user It characterized in that it comprises a; causing a shape deformation and the end ring separated from the injection part together with the lid body.

In addition, the lid body, a spiral protrusion corresponding to the spiral fastening protrusion formed on the outer circumference of the injection part is formed on the inner circumference, and knurled to prevent slipping when the user is holding it by hand and rotating it clockwise/counterclockwise The part is formed on the outer circumference.

"형을 이루는 다수의 절개부로 조합되며 상기 주입부로부터의 상기 뚜껑본체 분리과정시 상기 간섭돌기가 상기 환형돌기를 타고 넘을 수 있게 외측으로 벌어지는 형태변형을 일으키는 다수의 변형부가 일정간격마다 형성되고, 상기 변형부의 상단에는, 상기 뚜껑본체의 하단과 일체로 이어지도록 돌출되는 한편 상기 뚜껑본체의 분리과정시 파단되며, 그 파단상태에 따른 상기 뚜껑본체의 개봉여부 파악이 가능토록 하는 봉인돌부가 형성된다.In addition, the end ring is connected horizontally and vertically from the boundary of the lid body so as to surround the interference protrusion and the interference protrusion bound to the annular protrusion when the cap body is provided and coupled to the injection unit

"It is combined with a plurality of incisions forming a shape, and during the process of separating the lid body from the injection part, a plurality of deformation parts that cause shape deformation that open outward so that the interference protrusion can ride over the annular protrusion are formed at regular intervals, At the upper end of the deformable part, a sealing protrusion is formed that protrudes so as to be integrally connected with the lower end of the lid body, and is broken during the separation process of the lid body, and allows the identification of whether the lid body is opened according to the broken state. .

In addition, the interference protrusion protrudes from the inner surface of the deformable part so as to be constrained by the annular protrusion, and the protruding end has an upward inclination, and is lowered by the annular protrusion in the process of separating the lid body from the injection part. It is bent, and while causing the shape deformation of the deformation portion due to the downward bending, it is possible to ride the annular projection when the shape deformation of the deformation portion.

In addition, the interference protrusion forms a simple protrusion capable of causing a shape change of the deformable part in the process of separating the lid body from the injection part, and crossing the annular protrusion during the shape change.

On the other hand, in the lid of a PET container that provides a sealing function of checking whether or not to be opened as well as tight seal for the preservation of the contents in a state of being attached to the injection part, the lid is provided to the injection part for tightly conserving the contents. The lid body is provided coupled; And, integrally formed under the lid body, constrained by an annular protrusion protruding under the outer circumference of the injection part, and exhibits a sealing function of determining whether the lid body is opened, while in the process of separating the lid body by a user Including; but, the lid body and the end ring form a mutually separating structure by a cutout portion, and a boundary portion between the lid body and the end ring by causing a shape deformation to be separated from the injection part together with the lid body In the inner circumference, while connecting the lid body and the end ring, when the lid body is provided and coupled to the injection unit, it is constrained to the annular protrusion, but during the process of separating the lid body from the PET container, the annular protrusion can be crossed. A plurality of interfering protrusions causing shape deformation so that they protrude at regular intervals, respectively, connect the lower end of the lid body and the upper end of the end ring, and are broken during the separation process of the lid body. It is characterized in that a sealing protrusion is formed so that it is possible to determine whether or not to open.

"형을 이루는 한편, 상기 주입부로부터 상기 뚜껑본체를 분리하는 과정에서 상기 환형돌기에 의해 펼쳐져, 상기 뚜껑본체와 상기 엔드링을 상호 이격시키고 그 상호 이격에 따른 상기 봉인돌부의 파단 및 상기 엔드링의 동시분리가 가능토록 상기 환형돌기의 간섭회피가 가능케 됨을 특징으로 한다.In addition, the interference protrusions, as both ends are integrally connected to the lower end of the lid body and the upper end of the end ring and are bent to one side so as to be constrained to the annular protrusion "

"While forming a mold, it is spread by the annular projection in the process of separating the lid body from the injection part, and the lid body and the end ring are spaced apart from each other, and the breaking of the sealing projection according to the mutual separation and the end ring It is characterized in that the interference avoidance of the annular projection is possible so that simultaneous separation of is possible.

As can be seen from the above description, the end-ring simultaneous separation type PET container lid of the present invention includes not only the lid body but also the end ring under the lid in the process of separating the lid body (lid) from the injection part of the PET container. By being able to be separated, it is possible to recover the PET container as a single material for satisfying recyclability (recycling).

In particular, as described above, in the process of separating the lid body from the injection portion of the PET container by rotating the lid body counterclockwise, the end ring caused a shape deformation (reduced ring shape retention capacity) and protruded from the outer circumference of the injection portion. By allowing the interference protrusion formed on the inner circumference of the end ring to escape from the annular protrusion, it is possible to more easily and easily separate the end ring from the injection unit.

In addition, by exerting the above-described effects, it not only satisfies the user needs of separating the end-rings, but also serves as a guideline for the development of competitive products, providing basic data that enhances the quality of life. It is a very useful invention that can greatly contribute to the establishment of policy and recovery technology for the waste resource recycling industry, which recovers and recycles resources from waste resources.

1A to 2 are perspective and cross-sectional views showing the configuration relationship of the end-ring simultaneous detachable pet container lid according to the present invention.
Figure 3 is a perspective view showing the constitutional relationship of the end ring in the lid of the pet container for simultaneous separation of the end ring according to the present invention.
Figure 4 is a cross-sectional view showing an embodiment of the end-ring simultaneous detachable pet container lid according to the present invention in use.
Figure 5 is a cross-sectional view showing another embodiment of the interference protrusion in the end ring simultaneous separation type PET container lid according to the present invention.
Figure 6 is a cross-sectional view showing another embodiment of the end-ring simultaneous separation type PET container lid according to the present invention.
Figures 7a to 7c is a cross-sectional view showing the operating state of the operating relationship of the end ring simultaneous separation type PET container lid according to the present invention.
Figures 8a to 8d is a cross-sectional view showing the operating state of the operating relationship of the end ring simultaneous separation type PET container lid of the present invention according to another embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

First of all, in adding reference numerals to elements of the drawings, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In the accompanying drawings, FIGS. 1A to 2 are perspective and cross-sectional views showing the configuration relationship of the end ring simultaneous separation type PET container lid according to the present invention, and FIG. 3 is the configuration of the end ring in the end ring simultaneous separation type PET container lid according to the present invention It is a main perspective view showing the relationship, Figure 4 is a cross-sectional view showing an embodiment of the end-ring simultaneous separation type PET container lid according to the present invention in use.

As shown in Figures 1a to 2, the end-ring simultaneous separation type PET container lid according to the present invention (A) is provided and coupled to the injection part 910 of the PET container 900 for the preservation of the contents ( 1) and, integrally formed under the lid body (1) and constrained by an annular protrusion 920 protruding below the outer circumference of the injection unit (910), the lid body (1) has a sealing function to determine whether or not to be opened. On the other hand, it includes an end ring 2 that is separated together with the lid body 1 from the injection part 910 of the PET container 900 by causing a shape deformation in the process of separating the lid body 1 by the user.

The lid body 1 is to prevent (close) the outflow of contents (food and beverage, etc.) contained in the PET container 900 in a state provided and coupled to the injection part 910 of the PET container 900. A binding protrusion 11 corresponding to the binding protrusion 930 spirally protruding on the outer circumference of the injection part 910 of the container 900 is formed on the inner circumference.

In addition, it is preferable that a knurling part 12 is further formed on the outer circumference of the lid body 1 to prevent slipping when the user holds it by hand and rotates it clockwise/counterclockwise.

The end ring 2 is for realizing the sealing function of the lid body 1 provided and coupled to the injection part 910 of the PET container 900, and as shown in FIGS. 3 and 4, the lid body ( When 1) is provided and coupled to the injection unit 910, it includes an interference protrusion 21 confined to the annular protrusion 920 protruding from the outer periphery of the injection unit 910, while forming the incision 22 Accordingly, in the process of separating the lid body 1 from the PET container 900, a plurality of deformable portions causing a shape deformation that opens outward so that the interference protrusion 21 can ride over the annular protrusion 920 ( 23) is prepared.

In addition, at the upper end of the deformable part 23, it protrudes so as to be integrally connected with the lower end of the lid body 1, and is fractured during the separation process of the lid body 1, according to the fracture state. A sealing protrusion 24 is formed so that it is possible to determine whether the lid body 1 is opened.

The interference protrusion 21 protrudes from the inner surface of the deformable part 23 so that the annular protrusion 920 protrudes from the outer circumference of the injection part 910 of the PET container 900 is constrained. This bar has an upward slope, and is bent downward by the annular protrusion 920 in the process of separating the lid body 1 from the injection part 910, and the shape deformation of the deformed part 23 accordingly On the other hand, it is possible to ride over the annular projection 920 when the deformation portion 23 is deformed.

"형을 이루는 것이 바람직하다.The cutout 22, as shown in FIG. 2, is connected horizontally and vertically from the boundary portion (the uppermost end in the drawing) of the lid body 1 "

"It is desirable to form a mold.

On the other hand, Figure 5 is a cross-sectional view showing another embodiment of the interference protrusion in the end ring simultaneous separation type PET container lid according to the present invention, the interference protrusion 21' according to another embodiment, as shown in Figure 5, The lid body 1 may be in the form of a simple protrusion that causes the deformation of the deformable portion 23 as described above during the separation process, and allows the annular protrusion 920 to be crossed during the deformation.

On the other hand, Figure 6 is a cross-sectional view showing another embodiment of the end ring simultaneous separation type pet container lid according to the present invention, the end ring simultaneous separation type pet container lid (A') of the present invention according to another embodiment, 6 and as described above, the lid body 1 and the end ring 2 are included, and the lid body 1 and the end ring 2 form a mutually separated structure by a cutout 22'.

In the lid body 1, the binding protrusion 11 is formed on the inner circumference, and the knurled portion 12 is formed on the outer circumference, as described in Fig. 6 and above.

And, on the inner circumference of the boundary between the lid body 1 and the end ring 2, which are separated from each other by the cutout 22', while connecting them (the lid body and the end ring), the lid body 1 The lid body (1) from the PET container 900 is constrained by the annular protrusion 920 protruding from the outer circumference of the injection part 910 when provided and coupled to the injection part 910 of the PET container 900 During the separation process, a plurality of interference protrusions (21") that cause shape deformation so that they can ride over the annular protrusion 920 protrude at regular intervals, respectively, and the lower end and the end ring (2) of the lid body (1) While connecting the upper ends of the lid body 1, a sealing protrusion 24 ′ is formed that is broken when the lid body 1 is separated, and makes it possible to determine whether the lid body 1 is opened or not according to the broken state.

"형을 이루는 바, 상기 주입부(910)로부터 뚜껑본체(1)를 분리하는 과정에서 상기 환형돌기(920)에 의해 펼쳐져 뚜껑본체(1)와 엔드링(2)을 상호 이격시키고 그에 따른 상기 봉인돌부(24')의 파단 및 상기 엔드링(2)의 동시분리가 가능토록 상기 환형돌기(920)의 간섭회피가 가능하다.The interfering protrusion 21" is the annular shape having both ends integrally connected to the lower end of the lid body 1 and the upper end of the end ring 2 and protruding from the outer circumference of the injection part 910 of the PET container 900 As it is bent to one side so that it can be constrained by the protrusion 920, "

"Forming a bar, in the process of separating the lid body 1 from the injection part 910, it is spread by the annular protrusion 920 to separate the lid body 1 and the end ring 2 from each other, and accordingly the It is possible to avoid interference of the annular protrusion 920 so that the sealing protrusion 24 ′ can be broken and the end ring 2 can be simultaneously separated.

When explaining in detail the operation of the end-ring simultaneous separation type PET container lid (A) according to the present invention having the above configuration as follows.

7A to 7C are cross-sectional views showing the operation relationship of the end-ring simultaneous detachable pet container lid according to the present invention, and the end-ring simultaneous detachable pet container lid (A) of the present invention is an injection part of the pet container 900 In the state of being equipped and coupled to the 910 (see Fig. 4), the injection part 910 is sealed and sealed to preserve the contents (food and beverage, etc.) contained in the PET container 900, as well as checking whether or not it is opened. Provides sealability.

In this state, by separating the lid (A) from the injection unit 910 so that the user can drink the contents contained in the PET container 900, the separation process of the lid (A) as described above In the end ring (2) connected to the lower side of the lid body (1) can be easily removed from the PET container 900 by allowing the lid body (1) to be separated at the same time.

In other words, by rotating the lid body 1 provided and coupled to the injection part 910 of the PET container 900 in a counterclockwise direction, the lid body 1 is raised along the injection part 910 The injection unit 910 can be opened by completely separating from the PET container 900 in a continuation of the process (rotation), thereby allowing the user to drink food and beverages contained in the PET container 900. will be.

In this process, based on the end ring (2) integrally configured on the lower side of the lid body (1) is separated (removed) from the injection unit (910) together with the lid body (1), a single material PET It is possible to recover the container 900, whereby it is possible to greatly increase the recyclability.

Specifically, when the lid body 1 provided and coupled to the injection part 910 is rotated counterclockwise for opening of the injection part 910, a binding protrusion formed on the inner circumference of the lid body 1 ( 11) by the action of riding on the binding protrusion 930 formed on the outer circumference of the injection part 910 of the PET container 900, the lid body 1 is moved to the upper side of the injection part 910, and the process It is completely separated from the injection part 910 of the PET container 900 in succession.

That is, as shown in FIG. 7A, the protruding end of the end ring 2 interfering protrusion 21, which was constrained by the annular protrusion 920 protruding from the outer circumference of the injection part 910, is the annular protrusion 920 ) Is bent downward due to the interference, and accordingly, as shown in FIG. 7B, the deformation part 23 is opened outward according to the process of bending the protruding tip of the interference protrusion 21 downward. Due to the loss of shape-preserving ability (reduced ring-shaped preservation ability) due to deformation, the sealing protrusion 24 formed on the upper end of the end ring 2 and connected to the lower end of the lid body 1 becomes tensile ) And the interference protrusion 21 is completely downwardly bent during the continuation of the process, as shown in Fig. 7b, the interference protrusion 21 around the inner circumference of the end ring 2 is a PET container ( It is possible to ride over the annular protrusion 920 protruding on the outer circumference of the injection part 910 of 900), whereby, as shown in Fig. 7c, the end ring 2 is PET along the lid body 1 It is possible to simultaneously separate from the injection part 910 of the container 900.

Thereby, in order to maximize the recovery and recyclability of the PET container 900 separated into a single material, the lid body 1 and the end ring 2 that is a part of the lid body 1 are separated. Is possible.

On the other hand, Figures 8a to 8d is a cross-sectional view showing the operating state of the end-ring simultaneous separation type pet container lid of the present invention according to another embodiment, as a cross-sectional view of the end-ring simultaneous separation type PET container lid of the present invention according to another embodiment (A ') will be described in detail as follows.

8A and 8B, when the lid body 1 provided and coupled to the injection unit 910 is rotated counterclockwise for opening the injection unit 910, Fig. 8C As described above, the end ring 2 interfering protrusion 21", which was constrained by the annular protrusion 920 protruding on the outer circumference of the injection part 910, is completely unfolded due to the interference of the annular protrusion 920, Accordingly, the lid body (1) and the end ring (2) are separated from each other, so that the sealing protrusion (24') formed on the upper end of the end ring (2) and connected to the lower end of the lid body (1) is broken by tensile force, and the The interference protrusion 21" is able to ride over the annular protrusion 920 protruding on the outer circumference of the injection part 910 of the PET container 900, and as shown in FIG. 8D, the end ring 2 It is possible to simultaneously separate from the injection portion 910 of the PET container 900 along the lid body 1.

In summary, according to the end ring simultaneous separation type PET container lid (A) of the present invention, in the process of separating the lid body (1) from the injection portion (910) of the PET container (900), the lid body (1) is Of course, as the end ring 2 can be separated at the same time, the PET container 900 can be recovered as a single material for satisfying recyclability (recycling).

In particular, as described above, the shape of the end ring 2 is deformed in the process of separating it from the injection part 910 of the PET container 900 by rotating the lid body 1 in a counterclockwise direction. ), the end ring 2 is injected by allowing the interference protrusion 21, 21 ′, 21 ″ to escape from the annular protrusion 920 protruding at the outer periphery of the injection unit 910 It is possible to achieve an effect that can be separated more easily and easily from the part 910.

The above description is only illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention belongs can make various modifications, changes, and substitutions within the scope not departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but are for illustration, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. . In addition, the scope of protection of the present invention should be interpreted by the following claims, and all technical thoughts within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

A, A': PET container lid, 1: lid body
2: end ring, 11: binding protrusion
12: knurled part, 21, 21', 21": interference protrusion
22: incision, 23: deformation
24, 24': sealing protrusion

Claims (7)

In the lid of a PET container that provides a sealing function for checking whether or not to be opened as well as a tight seal for preservation of the contents in a state of being attached to the injection part,
The lid may include a lid body provided and coupled to the injection unit for tight protection of the contents; And, integrally formed under the lid body, constrained by an annular protrusion protruding under the outer circumference of the injection part, and exhibits a sealing function of determining whether the lid body is opened, while in the process of separating the lid body by a user Including; an end ring that causes shape deformation and is separated from the injection part together with the lid body,
In the end ring, when the lid body is provided and coupled to the injection unit, it is connected horizontally and vertically from the boundary of the lid body so as to surround the interference protrusion and the interference protrusion constrained by the annular protrusion.

"It is combined with a plurality of incisions forming a shape, and during the process of separating the lid body from the injection part, a plurality of deformation parts that cause shape deformation that open outward so that the interference protrusion can ride over the annular protrusion are formed at regular intervals,
At the upper end of the deformable part, a sealing protrusion is formed that protrudes so as to be integrally connected with the lower end of the lid body, and is broken during the separation process of the lid body, and allows the identification of whether the lid body is opened according to the broken state. End-ring, characterized by simultaneous detachable PET container lid.
The method of claim 1,
The lid body has a helical protrusion corresponding to a helical fastening protrusion formed on the outer circumference of the injection part is formed on the inner circumference,
End-ring simultaneous separation type PET container lid, characterized in that a knurled part is formed on the outer circumference to prevent slipping when the user holds it by hand and rotates it in a clockwise/counterclockwise direction.
delete The method of claim 1,
The interference protrusion protrudes from the inner surface of the deformable part so as to be constrained to the annular protrusion, and the protruding end has an upward inclination,
In the process of separating the lid body from the injection part, it is bent downward by the annular protrusion, causing the shape deformation of the deformed part according to the downward bending, while it is possible to ride the annular protrusion when the deformed part is deformed. End-ring, characterized by simultaneous separation type PET container lid.
The method of claim 1,
The interfering protrusion causes a shape change of the deformable part in the process of separating the lid body from the injection part, and forms a simple protrusion that can cross the annular protrusion when the shape is deformed. Simultaneous detachable PET container lid.
In the lid of a PET container that provides a sealing function for checking whether or not to be opened as well as a tight seal for preservation of the contents in a state of being attached to the injection part,
The lid may include a lid body provided and coupled to the injection unit for tight protection of the contents; And, integrally formed under the lid body, constrained by an annular protrusion protruding under the outer circumference of the injection part, and exhibits a sealing function of determining whether the lid body is opened, while in the process of separating the lid body by a user Including; but, the lid body and the end ring form a mutually separating structure by a cutout portion, which causes shape deformation and is separated from the injection part together with the lid body,
On the inner circumference of the boundary between the lid body and the end ring, while connecting the lid body and the end ring, the lid body is constrained to the annular projection when the lid body is provided and coupled to the injection unit, and the lid body is separated from the PET container. During the process, a plurality of interference protrusions that cause shape deformation so as to ride over the annular protrusion protrude at regular intervals, respectively, connect the lower end of the lid body to the upper end of the end ring, and break during the separation process of the lid body. End ring simultaneous separation type PET container lid, characterized in that a sealing protrusion is formed to enable the identification of whether the lid body is opened according to the broken state.
The method of claim 6,
As the interference protrusion, as both ends are integrally connected to the lower end of the lid body and the upper end of the end ring and are bent to one side so as to be constrained to the annular protrusion, "

"While forming a sentence,
In the process of separating the lid body from the injection part, it is spread by the annular protrusion, so that the lid body and the end ring are separated from each other, and the sealing protrusion according to the mutual separation and the simultaneous separation of the end ring are possible. End-ring simultaneous separation type PET container lid, characterized in that the interference avoidance of the annular projection is possible.

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