WO2022030979A1

WO2022030979A1 - Pet container cap

Info

Publication number: WO2022030979A1
Application number: PCT/KR2021/010193
Authority: WO
Inventors: 권복민
Original assignee: 주식회사 미소지음
Priority date: 2020-08-07
Filing date: 2021-08-04
Publication date: 2022-02-10
Also published as: KR102248418B1

Abstract

The present invention relates to a PET container cap, and to a cap coupled to an inlet to confirm the tight sealing of contents accommodated inside a PET container and the opening thereof, the cap comprising: a cap body having a cap threaded coupling part formed on the circumference of the inner surface thereof to be couplable to or separable from a threaded coupling part formed on the circumference of the outer surface of the inlet, and a knurling part formed on the circumference of the outer surface thereof so as to be capable of preventing slipping during rotation; and an end ring being formed in a ring shape below the cap body, and comprising a lower case which has interfering protrusions, to be caught by locking protrusions provided on the inlet, formed at intervals on the circumference of the inner surface thereof, joint protrusion parts which are arranged at intervals in a space formed between the cap body and the lower case, of which the ends on both sides are integrally formed on the cap body and the lower case, and which are deformed during rotation of the cap body, and sealing protrusion parts which are arranged, at intervals, between the joint protrusion parts, of which the ends on both sides are integrally formed on the cap body and the lower case, and of which each one end is isolated during rotation of the cap body.

Description

PET container lid

The present invention relates to a PET container lid, and more particularly, to a PET container lid in which the end ring located at the bottom can be separated together when the lid body coupled to the injection port of the PET container is separated.

The main characteristics of PET (polyethylene terephthalate; PET) containers used today are that they are light, transparent, and recyclable, so they are gaining popularity as food and beverage containers.

Since the invention of such a PET container, it was immediately utilized in the industry due to the boom of the carbonated beverage industry and the advantages of materials, and around 1999, it enjoyed a boom to the extent of producing 100 billion bottles a year. At first, it was mostly used as a container for liquids such as beverages and sauces, but recently, it is used as various packaging materials such as eye drops and detergents as well as alcoholic beverages containing beer and soju, and now it is approaching as an essential existence in the living environment of consumers.

On the other hand, the injection port (spout portion) of the PET container is provided with a lid (cap) that provides a sealing function to determine whether the container has been opened or not, as well as an airtight seal for preservation of contents (food and beverage, etc.).

Specifically, a typical PET container includes a container body containing the contents and a lid coupled to the inlet of the container body, and on the outer periphery of the inlet of the container body, a spiral fastening protrusion for fastening the lid and An annular constraining protrusion is formed to prevent the lid from being separated.

And, the lid is made of a lid body for sealing and sealing the inlet of the container body and an end ring for sealing the lid body, the inner periphery of the lid body has a spiral protrusion corresponding to the fastening protrusion of the inlet outer periphery is formed, and on the inner periphery of the end ring, a plurality of interference protrusions that are caught by the restraining protrusions of the outer periphery of the injection hole are formed.

Therefore, even if the lid is rotated counterclockwise to separate it from the injection port of the PET container, the end ring is interfering with the inner circumference of the end ring is caught by the constraining projection of the outer circumference of the injection port. It remains as it is in the PET container.

However, since the PET container and the lid are made of different materials from PET and PE (high density polyethylene; HDPE), in order to satisfy the recyclability (recycling) of the PET container, the lid, which is a dissimilar material, and the end, which is a part of the lid 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 nippers, but most of the PET containers are recovered with the end ring remaining due to the inconvenience of the method. In most cases, it is difficult to separate and collect, so it is thrown away as general waste, resulting in waste of resources as well as environmental pollution.

In order to solve this problem, a structure for removing the end ring of a resin bottle cap and a container having the same have been disclosed through Korean Patent Laid-Open No. 10-2012-0101626, and the conventional end ring removal of the resin bottle cap The structure and the container having the same are formed by cutting a part of the ring stop upper flange (constraint protrusion) that regulates the end ring at the inlet in a slope shape to form a flange cut-out part (incision part) for induction, the end ring When the end ring is rotated, the end ring can be easily removed from the inlet by allowing the plurality of protruding flaps (interference projections) formed on the inner circumference of the end ring to escape the cut-out portion of the induction flange.

However, in order to achieve the removal structure of the end ring as described above, since the cut-out portion of the flange for induction must be formed, there is a problem of lack of compatibility that has to manufacture the injection port of the PET container in a form different from that of the past. It is somewhat difficult to do.

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

The present invention has been proposed in view of the above situation, and in the process of separating the lid body from the injection port of the PET container, a shape change of the end ring under the lid body is induced, so that when the lid body is separated, the outer circumference of the injection port An object of the present invention is to provide a lid for a PET container that loses the binding force of the end ring by the constraining protrusion of the end ring and can thereby be separated together to the end ring.

The lid of the PET container according to an embodiment of the present invention is coupled to the injection port of the PET container and in the lid to check whether the contents accommodated in the inside of the PET container are sealed and opened, the spiral coupling part formed around the outer surface of the injection hole and a lid body in which a cap spiral coupling portion is formed around the inner surface to be coupled or separated, and a knurled portion is formed around the outer surface to prevent sliding during rotation; and an interference protrusion formed in a ring shape at the lower portion of the lid body, formed around an inner surface and caught by a restraining protrusion constituting the injection port; a joint protrusion disposed at a gap in the space formed between the lid body and the lower case, both ends of which are integrally formed with the lid body and the lower case, and causing shape deformation when the lid body is rotated; An end ring disposed with a gap between the joint protrusion and the joint protrusion, both ends formed integrally with the lid body and the lower case, and comprising a sealing protrusion from which one end is separated when the lid body is rotated; and include

In addition, the interference protrusion may have a curved shape, in which an upper inclined surface, a vertical surface, and a lower inclined surface are continuously formed from the top to the bottom, and both ends may be formed to be curved.

In addition, the joint protrusion is formed to be curved along the upper surface of the end ring, and the sealing protrusion has any one shape of a cone, a trapezoid, a semi-conical shape, and a reflective trapezoid shape so that the upper part is easily broken when the lid body is rotated. can be formed.

The PET container lid according to the present invention can be separated from the lid body as well as the end ring located under the lid body at the same time in the process of separating the lid body from the injection port of the PET container, so that a single material for satisfying recyclability As a result, there is an effect that the recovery of the PET container is possible.

In addition, the PET container lid according to the present invention not only satisfies the user needs of separating the end ring, but also serves as a guideline for competitive product development, thereby providing basic data that enhances the quality of life, while not being discarded. has the effect of greatly contributing to the establishment of policies and recovery technologies for the waste resource recycling industry that recovers and recycles resources from waste resources.

1 is a perspective view showing a PET container lid according to the present invention.

Figure 2 is a bottom perspective view showing a PET container lid according to the present invention.

Figure 3 is a front view showing a PET container lid according to the present invention.

Figure 4 is a cross-sectional view showing a PET container lid according to the present invention.

5 is a state diagram showing a PET container lid according to the present invention.

Figure 6 is a photograph showing a prototype of the lid of the PET container according to the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is defined by the description of the claims. Meanwhile, the terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless otherwise specified in the phrase. As used herein, "comprises" or "comprising" refers to the presence or addition is not excluded.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, Figure 1 is a perspective view showing a PET container lid according to the present invention, Figure 2 is a bottom perspective view showing a PET container lid according to the present invention, Figure 3 is a front view showing a PET container lid according to the present invention, Figure 4 is a cross-sectional view showing the PET container lid according to the present invention.

First, the PET container 10 to which the PET container lid 100 of the present invention is applied has an injection hole 12 formed on the upper portion, and a spiral coupling portion 14 is formed around the outer surface of the injection hole 12, and the An annular constraining protrusion 16 is formed in the injection hole 12 located at the lower portion of the spiral coupling portion 14 .

Here, the PET container 10 is not limited to the drawings shown, it is revealed that a known PET container can be applied.

The PET container lid 100 of the present invention is roughly divided into a lid body 200 and an end ring 300 .

And the PET container lid 100 of the present invention causes a shape change when the lid body 200 coupled to the injection port 20 of the PET container 10 is separated, and an end ring positioned under the lid body 200 ( 300) is also characterized in that it can be separated.

The lid body 200 has a predetermined diameter and is formed in a circular shape on a plane.

That is, the lid body 200 is spirally coupled to the injection port 20 of the PET container 10, and the contents (food and beverage, etc.) accommodated in the PET container 10 are prevented from leaking to the outside.

And the lid body 200 has a lid spiral coupling part 210 is formed around the inner surface, and a knurling part 220 is formed around the outer surface to prevent sliding during rotation operation.

That is, the lid body 200 forms a lid spiral coupling part 210 that is coupled or separated from the spiral coupling part 14 of the injection port 12 constituting the PET container 10 on the inner surface, and the outer surface circumference A knurling portion 220 is formed to prevent sliding when the user holds the hand and rotates it in a clockwise or counterclockwise direction.

The end ring 300 is integrally formed under the lid body 200 .

Here, the end ring 300 performs a sealing function of the lid body 200 coupled to the inlet 20 of the PET container 10 .

And the end ring 300 has an interference protrusion 310 formed at intervals along the same line around the inner surface, and a joint protrusion 320 formed integrally with the lid body 200 at an upper end with a gap is formed. , a sealing protrusion 330 is formed with a gap between the joint protrusions 320 .

Specifically, the interference protrusion 310 is caught by the annular constraining protrusion 24 constituting the inlet 20 when the lid body 200 is coupled to the inlet 20 of the PET container 10 .

Here, the interference protrusion 310 has a curved shape, and an upper inclined surface 311, a vertical surface 312, and a lower inclined surface 313 are continuously formed in the upper to lower direction, and both ends 314 are formed to be curved.

That is, the interference protrusion 310 has an inclined lower inclined surface 313 to be smoothly inserted into the restraining protrusion 24 of the injection hole 20 , and a vertical surface 312 to be supported by the restraining protrusion 24 . ) is formed to protrude, and the upper inclined surface 311 is formed to be inclined so that it can be smoothly separated from the restraining protrusion 24 of the injection hole 20 .

In addition, the joint protrusion 320 is formed to be curved along the upper surface of the end ring 300 to cause shape deformation during the rotation operation of the lid body 200 .

In a more supplementary explanation, the joint protrusion 320 is pulled in the direction of the lid body 200 when the lid body 200 is separated from the injection port 20 of the PET container 10, causing a shape deformation and end It serves to move the ring 300 away from the constraining protrusion 24 .

In addition, in the sealing protrusion 330, the upper part connected to the lid body 200 is fractured during the rotation operation of the lid body 200, and accordingly, it is possible to determine whether the lid body 200 is opened. there will be

At this time, the sealing protrusion 330 is formed in any one of a cone, a trapezoidal shape, a semi-conical shape, and a reflective trapezoid shape so that the lid body 200 can be smoothly broken during the rotation operation.

The operation of the PET container lid having the above configuration will be described in detail as follows.

First, a lid having a predetermined diameter and formed in a circular shape on a plane, the lid spiral coupling part 210 is formed around the inner surface, and the knurling part 220 is formed around the outer surface to prevent sliding during rotation operation. The body 200 and

Interference protrusions 310 are formed at intervals along the same line around the inner surface in a ring shape, and joint protrusions 320 formed integrally with the lid body 200 at intervals at the upper end are formed, and the joint protrusions ( The end ring 300 in which the sealing protrusion 330 is formed with a gap between 320 is integrally formed with the PET container lid 100 integrally formed.

In such a state, the PET container lid 100 is provided and coupled to the injection port 12 of the PET container 10, and the injection hole 12 is closed to preserve the contents contained in the PET container 10. In addition to the sealed and sealed box, it will provide the ability to seal whether it has been opened or not.

Then, the user drinks the contents contained in the inside of the PET container 10, and the PET container lid 100 composed of the lid body 200 and the end ring 300 is inserted into the injection port 12 of the PET container 10. If you want to separate from, it is as follows.

First, the lid body 200 provided and coupled to the injection part 12 of the PET container 10 is rotated counterclockwise so that the lid body 200 rises along the injection part 12 .

*

* Thereafter, the injection part 12 is opened by allowing the lid body 200 to be completely separated from the fed container 10 , and the user can drink the food and beverage contained in the PET container 10 .

In this process, based on the separation of the end ring 300 integrally formed on the lower side of the lid body 200 from the injection unit 12 together with the lid body 200, a single-material PET container ( 10), it is possible to recover, thereby greatly increasing the recyclability.

Specifically, when the lid body 200 coupled to the injection unit 12 is rotated counterclockwise to open the injection unit 12, the lid spiral formed around the inner surface of the lid body 200 By the action of the coupling part 210 riding on the spiral coupling part 14 formed around the outer surface of the injection part 12 of the PET container 10, the lid body 200 moves to the upper side of the injection part 12 and it is completely separated from the injection part 12 of the PET container 10 according to the continuation of the process.

At this time, as the interference protrusion 310 around the inner surface of the end ring 300 is caught by the restraining protrusion 16 around the outer surface of the injection part 12, eventually the lid body 200 and the end ring 300 A phenomenon that the gap between do.

In addition, the end at which the joint protrusion 320 is formed when the lid body 200 is rotated by the joint protrusion 320 formed on the other upper end of the end ring 300 and connected to the other lower end of the lid body 200 . A portion of the ring 300 is lifted upwards to induce an action of shape change.

That is, due to the loss of the shape preservation ability (reduction of the ring shape retention capacity) according to the shape deformation of the end ring 300, the interference protrusion 310 around the inner surface of the end ring 300 is formed of the PET container (10). The injection part 12 rides over the restraining protrusion 16 around the outer surface, and the end ring 300 completely deviates from the injection part 12, and the end ring 300 together with the lid body 200 is a PET container ( 10) at the same time it becomes possible to separate from

Accordingly, in order to maximize the recovery and recyclability of the PET container 10 separated by a single material, the lid body 200 and the end ring 300 located at the lower part of the lid body 200 are separated. will become possible

As described above, according to the PET container lid 100 of the present invention, in the process of separating the lid body 200 from the injection part 12 of the PET container 10, the lid body 200 as well as the end ring 300 ) can be separated at the same time, so it is possible to achieve the effect of enabling the recovery of the PET container 10 as a single material for satisfying recyclability.

In particular, as described above, in the process of rotating the lid body 200 counterclockwise to separate it from the injection part 12 of the PET container 10, the shape deformation of the end ring 300 (ring shape preservation ability) degradation), and by allowing the interference protrusion 310 to escape from the restraining protrusion 16 around the outer surface of the injection unit 12, the end ring 300 can be more easily and easily removed from the injection unit 12 It is possible to achieve a possible effect by isolating it.

The above description is merely illustrative of the technical idea of the present invention, and various modifications and variations are possible by those skilled in the art to which the present invention pertains without departing from the essential characteristics of the present invention.

Accordingly, the embodiments expressed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas that are equivalent to or within the equivalent range should be construed as being included in the scope of the present invention.

The present invention relates to a PET container lid, and more particularly, it can be used in the PET container lid field in which the end ring located at the bottom can also be separated when the lid body coupled to the injection port of the PET container is separated.

Claims

In the lid coupled to the injection port of the PET container to check whether the contents accommodated in the inside of the PET container are sealed and opened,

a lid body in which a cap spiral coupling portion is formed around an inner surface to be engaged with or separated from a spiral coupling portion formed around the outer surface of the inlet, and a knurled portion is formed around the outer surface to prevent sliding during rotation; and

Interfering projections formed in a ring shape on the lower portion of the lid body, formed around the inner surface and caught on the constraining projections constituting the injection port; a joint protrusion disposed at a gap in the space formed between the lid body and the lower case, both ends of which are integrally formed with the lid body and the lower case, and causing shape deformation when the lid body is rotated; An end ring disposed with a gap between the joint protrusion and the joint protrusion, both ends formed integrally with the lid body and the lower case, and comprising a sealing protrusion from which one end is separated when the lid body is rotated; and PET container lid included.
The method according to claim 1, The interference projection,

A PET container lid, characterized in that the upper inclined surface, the vertical surface and the lower inclined surface are continuously formed in a curved shape from the top to the bottom, and both ends are formed to be curved.
The method according to claim 1,

The joint projection is formed to be curved along the upper surface of the end ring,

The sealing protrusion is a PET container lid, characterized in that it is formed in any one shape of a cone, a trapezoid, a semi-conical shape, a reflective trapezoid shape so that the upper part is easily broken when the lid body is rotated.