Container cap and container assembly to which it is connected

Abstract

The present invention relates to a container cap and a container assembly to which the same is coupled, and more particularly to a container cap coupled to an inlet of a container in which contents are contained, and a container assembly to which the same is coupled. The present invention discloses a container assembly including a container (10) in which contents are contained, a container cap (20) coupled to the container inlet (12), and a sealing member (30) whose bottom surface is attached to an upper end of the container inlet (12) of the container (10) and coupled to the container cap (20), wherein the coupling force between the sealing member (30) and the container cap (20) is greater than the coupling force between the container inlet (12) and the sealing member (30), such that the sealing member (30) is separated from the container inlet (12) when the container cap (20) is rotated away from the container (10).

Description

[Technical Field]

[0001] The present invention relates to a container cap and a container assembly to which the same is coupled, and more particularly to a container cap that is coupled to a container inlet through which contents are accommodated, and a container assembly to which the same is coupled. [Background technology]

[0002] FIG. 1 is a cross-sectional view of a container according to the prior art.

[0003] Generally, a drinking water container such as a lactic acid bacteria drink is fitted with a container inlet 102, and a sealing member 114 is attached to the container inlet 102 to seal the contents stored in the container 104 in order to prevent the contents stored in the container 104 from leaking out without permission. The sealing member 114 is then covered with a container cap 100 to prevent the sealing member 114 from being damaged without permission by external impact or contact with other objects.

[0004] The container cap 100 is cylindrical with a sealed top, and its inner surface is formed with a locking protrusion 110 that engages with a locking rib 108 formed on the outer surface of the container inlet 102, and a gripping portion 112 that can be gripped by hand when separating the container cap 100 from the container inlet 102.

[0005] With such a container cap 100, the knob 112 is lifted to separate the container cap 100 from the container inlet 102, and then the sealing member 114 is removed from the container inlet 102, allowing the contents contained in the container to be discharged to the outside through the container inlet 102.

[0006] However, the above-mentioned conventional container caps have the problem of being inconvenient to use because, after separating the container cap from the container, the sealing member attached to the container inlet and sealing it must be removed by hand or with a separate tool such as a blade.

[0007] In particular, when removing the sealing member by hand, the adhesive force between the sealing member and the edge of the container inlet is strong, so the sealing member cannot be smoothly separated from the edge, and it is therefore necessary to pull it off again by hand, which is a hassle, and since this brings the hand into contact with the container inlet, it can also cause hygiene problems. Summary of the Invention [Problem to be solved by the invention]

[0008] Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a container cap and a container assembly to which the same is attached that are easy to use, in which a sealing member that seals a container entrance is separated together with the container cap when the container cap is separated from the container, eliminating the need to remove the sealing member separately. [Means for solving the problem]

[0009] The present invention has been created to achieve the above-mentioned object of the present invention, and discloses a container assembly comprising a container for accommodating contents, a container cap connected to the container inlet, and a sealing member whose bottom surface is attached to the upper end of the container inlet of the container and connected to the container cap, wherein the bonding force between the sealing member and the container cap is greater than the bonding force between the container inlet and the sealing member, so that the sealing member is separated from the container inlet when the container cap is separated from the container by rotation. The upper surface of the sealing member may be adhesively attached to the container cap.

[0010] The container cap includes a cap body coupled to the container inlet, and a seal member separating portion provided on the cap body to separate the seal member from the cap body.

[0011] The cap body includes a coupling portion to which an upper surface of the rim of the sealing member is attached, the coupling portion corresponding to a portion coupled to an upper surface of the container inlet.

[0012] The joining portion may have a flat surface that is in close contact with the upper surface of the sealing member.

[0013] A groove may be formed in one of the coupling portion and the upper end of the container inlet so that one of them can be inserted and tightly fitted, and the other may be partially inserted into the groove.

[0014] The coupling portion may have a groove formed therein into which an upper end of the container inlet is inserted.

[0015] The sealing member separating portion includes a pressing portion that moves downward to pressurize the sealing member and separate the sealing member from the cap body, and a connecting portion that connects the cap body and the pressing portion so that the pressing portion can move downward by elastic deformation.

[0016] The pressing portion may have one or more pressing portions provided on the bottom surface thereof for pressing the sealing member.

[0017] The connecting portion may be integrally formed with the pressing portion and the cap body.

[0018] The connecting portion may be formed to separate the cap body from the upper and lower portions together with the pressing portion.

[0019] The connecting portion may be formed of a plurality of bands that are elastically deformable between the inner periphery of the cap body and the pressing portion.

[0020] The seal member separating portion may be integrally formed with the cap body to seal the container when the cap body is coupled to the container inlet.

[0021] The present invention further discloses a container cap, which is a container assembly including a container for containing contents, a container cap connected to the container inlet, and a sealing member whose bottom surface is attached to the upper end of the container inlet of the container and connected to the container cap, and which is used in a container assembly having the above-mentioned configuration. [Effects of the Invention]

[0022] 1. Eco-friendly and recyclable In the container cap and the container assembly to which it is attached according to the present invention, when the container cap 20 is opened from the container inlet 12, the sealing member 30 sealing (blocking) the upper surface 12a of the container inlet 12 is automatically separated together with the container cap 20, eliminating the need to dispose of the container 10 as waste and enabling recycling (environmentally friendly) of the container 10. In addition, since the sealing member 30 separated from the container inlet 12 can be stored / separated from the container cap 20, both the container cap 20 and the container 10 can be recycled.

[0023] Furthermore, the container cap and the container assembly to which it is attached according to the present invention have the advantage that they can be easily recycled because, when the container cap 20 is separated from the container 10, it is removed from the container inlet 12 without any remaining portion of the sealing member 30.

[0024] Furthermore, since the sealing member 30, which is made of a different material, can be completely separated from the container cap 20 without any remaining parts, there is an advantage that the container cap 20 can be recycled smoothly.

[0025] 2. Contents can be stored safely When the container cap 20 is opened and then reattached according to the embodiment of the sealing member, the lower end layer of the sealing member 30 and the upper surface 12a of the container inlet 12 are reattached to provide a blocking function, thereby enabling safe storage of the contents.

[0026] 3. Existing production lines can be used as is Since it can process the same external dimensions (width, height) as conventional container caps and conventional containers, there is no need to incur additional costs to change existing production lines, making it possible for rapid expansion to related industries around the world. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a cross-sectional view of a container cap according to the prior art. [Figure 2] 1 is a perspective view of a container assembly according to a first embodiment of the present invention; [Figure 3] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. [Figure 4A] 4 is a cutaway perspective view of a portion of the container assembly of FIG. 3. FIG. [Figure 4B] FIG. 4 is a partial cross-sectional view showing a part of the longitudinal cross-sectional view shown in FIG. [Figure 4C] FIG. 4C is a partial cross-sectional view showing the process of removing the sealing member after the container cap is separated from FIG. 4B. [Figure 5A] 1 is a cutaway perspective view showing the container cap coupled to the container with the sealing member removed; FIG. [Figure 5B] FIG. 5B is a partial cross-sectional view of another side of FIG. 5A. [Figure 6A] FIG. 3 is a plan view of the container cap of FIG. 2. [Figure 6B] FIG. 3 is a bottom view of the container cap of FIG. 2. [Figure 6C] FIG. 6C is a bottom view showing a modification of FIG. 6B. [Figure 6D] FIG. 3 is a perspective view of the container cap of FIG. 2. [Figure 7] 4 is a partial cross-sectional view showing a modification of the container assembly shown in FIG. 3. FIG. [Figure 8] 8 is a partial cross-sectional view showing a state in which the container cap is coupled to the container from which the sealing member has been removed from the container assembly of FIG. 7.

[0023] FIG. [Figure 9] FIG. 8 is an enlarged partial cross-sectional view of part A in FIG. 7. [Figures 10A-10F]FIG. 10 is a partial cross-sectional view showing a modification of the example shown in FIG. 9. [Figure 11A] 4 is a partial cross-sectional view showing a modification of the container assembly shown in FIG. 3. FIG. [Figure 11B] 11B is a partial cross-sectional view showing a state in which the container cap is coupled to the container from which the sealing member has been removed from the container assembly of FIG. 11A. FIG. [Figure 12A] 4 is a plan view showing a variation of the container assembly shown in FIG. 3. FIG. [Figure 12B] FIG. 12B is a partial cross-sectional view taken along the line VI-VI in FIG. 12A. [Figure 13] 4 is a partial cross-sectional view showing a modification of the container assembly shown in FIG. 3. FIG. [Figure 14A] FIG. 14 is an enlarged partial cross-sectional view of part B in FIG. [Figure 14B] 14B is a partial cross-sectional view showing a state in which the container cap is coupled to the container from which the sealing member has been removed from the container assembly of FIG. 14A. FIG. [Figure 15] 14 is a partial cross-sectional view showing a modification of the container assembly shown in FIG. 13. FIG. [Figure 16] 4 is a partial cross-sectional view showing an example of a sealing member provided in the container assembly shown in FIG. 3. FIG. [Figures 17A-17C] FIG. 17 is a partial cross-sectional view showing a modification of the seal member shown in FIG. 16. [Figures 18A-18D] 3 is a plan view showing a modified example of the shape of the pressing portion of the container cap shown in FIG. 2. FIG. [Figure 19] 4 is a partial cross-sectional view showing a modification of the container assembly shown in FIG. 3. FIG. [Figure 20] 20 is a partial cross-sectional view showing a state in which the container cap is coupled to the container from which the sealing member has been removed from the container assembly of FIG. 19.

[0033] FIG. [Figure 21] FIG. 20 is an enlarged partial cross-sectional view of part C in FIG. 19. [Figure 22] FIG. 20 is a cross-sectional view showing a variation of the container assembly of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0028] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A container cap and a container to which the cap is coupled according to the present invention will now be described with reference to the accompanying drawings.

[0029] As shown in Figures 2 to 22, the container assembly according to the present invention includes a container 10 for accommodating contents, a container cap 20 connected to the container inlet 12, and a sealing member 30 whose bottom surface is attached to the upper end of the container inlet 12 of the container 10 and connected to the container cap 20 to seal the container 10.

[0030] The container 10 is configured to contain liquid or powdered substances such as beverages, alcoholic beverages, engine oil, antifreeze, cooking oil, dairy products, etc., and can be configured in any way as long as it has a container inlet 12 for discharging the contents from the container.

[0031] The contents contained in the container 10 may be various substances depending on the combination of the contents and auxiliary contents, such as a liquid substance that is swallowed together with a solid pill as the auxiliary contents described below, and may generally be a liquid substance.

[0032] The container 10 may have various shapes, such as a cylindrical shape or a square prism shape, except for the container inlet 12 .

[0033] Furthermore, the container 10 may be made of various materials such as plastic, ceramic materials such as porcelain, glass, metal, etc. Here, the container cap is preferably made of plastic in consideration of ease of manufacture and breakage separation.

[0034] Meanwhile, the container inlet 12 is an outlet through which the contents are discharged to the outside, and is a part that is opened and closed by opening and closing the container cap 100, and can have various structures depending on the connection structure with the container cap 20.

[0035] The container cap 20 is configured to be coupled to the container inlet 12 of the container 10 to seal the container 10, and can have various configurations.

[0036] In particular, the container cap 20 can have various configurations depending on the coupling structure between the sealing member 30 and the container inlet 12.

[0037] The container cap 20 is made of a plastic material, and may be made of any material that can be injected, such as HDPE, PP, PET, PVC, or PS.

[0038] The sealing member 30 has a bottom surface attached to the upper end of the container inlet 12 of the container 10 and is connected to the container cap 20 to seal the container 10, and can be configured in various ways depending on the connecting structure of the container cap 20.

[0039] In particular, the sealing member 30 is characterized in that the bonding force between the sealing member 30 and the container cap 20 is greater than the bonding force between the container inlet 12 and the sealing member 30, so that when the container cap 20 is separated from the container 10 by rotation, it is separated from the container inlet 12.

[0040] For example, the sealing member 30 includes a metal sheet layer 311, a first resin layer 313 and a second resin layer 315 bonded to the top and bottom surfaces of the metal sheet layer 311, as shown in FIG.

[0041] The metal sheet layer 311 is a metal layer that allows the sealing member 30 to adhere to the upper surface 12a of the container inlet 12 by induction or conduction depending on the rigidity of the sealing member 30, and can be made of any metal material used in commercially available sealing members other than aluminum or aluminum alloy materials.

[0042] The metal sheet layer 311 may have a thickness of 6 μm to 200 μm.

[0043] The first resin layer 313 and the second resin layer 315 are resin layers bonded to the top and bottom surfaces of the metal sheet layer 311, and may be made of PET.

[0044] The first resin layer 313 and the second resin layer 315 may have a thickness of 10 μm to 150 μm.

[0045] At this time, the first resin layer 313 and the second resin layer 315 can be respectively adhered to the top and bottom surfaces of the metal sheet layer 311 by adhesive layers 312 on the surface of the aluminum sheet material, as shown in Figures 17A to 17C.

[0046] The adhesive layer 312 is made of a material for adhering a resin layer such as PET to the surface of the aluminum sheet material, and can be made of an adhesive for a commercially available sealing material, which will be described later.

[0047] The sealing member 30 having the above-described structure can seal the container 10 with sufficient adhesive strength when the container cap 20 is attached to the container inlet 12, and can be easily separated when the container cap 20 is separated from the container inlet 12, thereby facilitating sealing and separation of the container 10.

[0048] For reference, the sealing member 30 is capable of being separated from the container inlet 12 while being fixed to the container cap 20 when the container cap 20 is separated, with the end of the edge 31 fitted into the container cap 20.

[0049] In particular, a portion of the edge 31 of the bottom surface of the sealing member 30 is also attached to the upper surface of the support portion 233, so that the bonding force of the sealing member 30 to the container cap 20 can be greater than the bonding force to the upper surface 12a of the container inlet 12.

[0050] Meanwhile, the sealing member 30 can be embodied in various ways depending on the materials of the container 10 and the container cap 20 in order to adhere to the upper surface 12a of the container inlet 12 and the container cap 20, in addition to the above-described embodiments.

[0051] In particular, the sealing member 30 may have a functional layer formed on at least one of the top and bottom surfaces thereof, which layer provides an easily peelable function.

[0052] For example, the sealing member 30 is a structure to be applied to the container assembly according to the present invention, and a CPP layer 317 may be formed on the bottom surface of the second resin layer 315 .

[0053] The CPP layer 316 is a layer having a thermal adhesive property for imparting an easy peeling function together with the adhesive layer 317, and is made of casting polypropylene.

[0054] The CPP layer 316 may have a thickness of 10 μm to 30 μm.

[0055] In order to enhance the adhesive performance of the sealing member 30 to the container inlet 12, an adhesive layer 317 for adhering to the upper surface 12a of the container inlet 12 may be formed on the bottom surface of the CPP layer 316.

[0056] The adhesive layer 317 is a layer for adhesion to the upper surface 12a of the container inlet 12, and may be made of an easily peelable material that is commonly used for adhesion between resins.

[0057] The adhesive layer 317 may have a thickness of 10 μm to 500 μm.

[0058] Meanwhile, the sealing member 30 according to the present invention must have a lower bonding strength to the container inlet 12 than to the container cap 20, and preferably has adhesive properties that allow for easy peeling.

[0059] For this reason, the sealing member 30 according to the present invention is an easy-peel layer for imparting easy-peel functionality, and an easy-peel layer made of acrylic, urethane, polyethylene (LDPE, LLDPE, MDPE, HDPE), metallocene polyethylene, polypropylene, SBR (styrene-butadiene rubber), EVA, EAA, EEA, EMAA, EMA, ionomer, Surlyn, polyester, copolymer, easy-peel resin, etc. can be formed on the surface that comes into contact with the upper surface 12a of the container inlet 12.

[0060] As another example, the sealing member 30 may be made up of seven layers, from the top: 1) easily peelable coating layer 322 (1 to 100 μm), 2) PET layer 313 (12 to 350 μm) which is a polyester film, 3) polyurethane adhesive layer 312 (1 to 12 μm), 4) hard 1 to 100 μm aluminum foil layer 311, 5) polyurethane adhesive layer 312 (1 to 12 μm), 6) PET layer 315 (12 to 350 μm) which is a polyester film, and 7) easily peelable coating layer 321 (1 to 100 μm).

[0061] As yet another example, the sealing member 30 may be formed of a total of eight layers, as shown in FIG. 17A, by further forming a polyurethane adhesive layer 312 of 1 to 12 μm between a PET layer 315 (12 to 350 μm) which is a polyester film and an easily peelable coating agent layer 321 (1 to 100 μm).

[0062] As the easily peelable film, a copolyester film or an easily peelable Co-EX film can also be used as the easily peelable film described above.

[0063] As yet another example, the sealing member 30 may be composed of nine layers, from top to bottom, of easily peelable film 322 (1 to 100 μm) / adhesive 312 (1 to 20 μm) / PET film 313 (12 to 350 μm) / adhesive 312 (1 to 20 μm) / aluminum foil 311 (1 to 100 μm) / adhesive 312 (1 to 20 μm) / PET film 315 (12 to 350 μm) / adhesive 312 (1 to 20 μm) / easy peelable film 321 (1 to 100 μm), as shown in FIG. 17B.

[0064] The easily peelable film is the above-mentioned easily peelable film, and a copolyester film or an easily peelable Co-EX film can also be used.

[0065] As yet another example, the sealing member 30 may be composed of 11 layers, from top to bottom, of easily peelable coating 323 (1 to 100 μm) / Co-EX film 322 (10 to 100 μm) / adhesive 312 (1 to 20 μm) / PET film 313 (12-250 μm) / adhesive 312 (1 to 20 μm) / aluminum foil 311 (1 to 100 μm) / adhesive 312 (1 to 20 μm) / PET film 315 (12 to 250 μm) / adhesive 312 (1 to 20 μm) / Co-EX film 317 (10 to 100 μm) / easily peelable coating 321 (1 to 100 μm), as shown in FIG. 17C.

[0066] - Additional examples of the structure of the sealing member depending on the container cap and container material 1) PE (Polyethylene) container caps and PP (Polypropylene) containers From the bottom, 1) 0.5μm~150μm PP layer, 2) 0.5μm~10μm adhesive layer, 3) 10μm~150μm PET layer, 4) 0.5μm~10μm adhesive layer, 5) 6μm~200μm metal sheet (aluminum) layer, 6) 0.5μm~10μm adhesive layer, 7) 10μm~150μm PET layer, 8) 0.5μm~10μm adhesive layer, 9) 0.5μm~150μm PP layer The uppermost and lowermost PP layers 9 and 1 are laminated in film form or formed into a functional (adhesive, sticky adhesive) layer by liquid coating.

[0067] The PP layer 9 on the top surface is adhesively bonded to the lower surface of the joining portion 230 of the container cap 20 made of PE material, and the PP layer 1 on the bottom surface is adhered to the upper surface 12a of the container inlet 12 made of PP material, providing easy peelability.

[0068] 2) PP container cap and PP container From the bottom, 1) 0.5μm~150μm PP layer, 2) 0.5μm~10μm adhesive layer, 3) 10μm~150μm PET layer, 4) 0.5μm~10μm adhesive layer, 5) 6μm~200μm metal sheet (aluminum) layer, 6) 0.5μm~10μm adhesive layer, 7) 10μm~150μm PET layer, 8) 0.5μm~10μm adhesive layer, 9) 0.5μm~150μm PP layer The uppermost and lowermost PP layers 9 and 1 are laminated in film form or formed into a functional (adhesive, sticky adhesive) layer by liquid coating. The PP layer 9 on the top surface is adhesively bonded to the lower surface of the joining portion 230 of the container cap 20 made of PP material, and the PP layer 1 on the bottom surface is adhered to the upper surface 12a of the container inlet 12 made of PP material, providing easy peelability.

[0069] 3) PE container caps and PET (Polyester) containers From the bottom, 1-1) a 0.5μm to 100μm easy-to-peel adhesive layer, 1-2) a 12μm to 500μm PET layer, 2) a 0.5μm to 10μm adhesive layer, 3) a 10μm to 150μm PET layer, 4) a 0.5μm to 10μm adhesive layer, 5) a 6μm to 200μm metal sheet (aluminum) layer, 6) a 0.5μm to 10μm adhesive layer, 7) a 10μm to 150μm PET layer, 8) a 0.5μm to 10μm adhesive layer, 9) a 0.5μm to 150μm PP layer The PP layer 9, which is the top surface, has an adhesive bonding function with the lower surface of the joining portion 230 of the container cap 20 described later, and the easily peelable adhesive layer adheres to the upper surface 12a of the container inlet 12 made of PET material, thereby having an easily peelable function.

[0070] 4) PE container caps and PET containers From the bottom, 1) a 12μm to 500μm copolyester film layer, 2) a 0.5μm to 10μm adhesive layer, 3) a 10μm to 150μm PET layer, 4) a 0.5μm to 10μm adhesive layer, 5) a 6μm to 200μm metal sheet (aluminum) layer, 6) a 0.5μm to 10μm adhesive layer, 7) a 10μm to 150μm PET layer, 8) a 0.5μm to 10μm adhesive layer, and 9) a 0.5μm to 150μm PP layer. The PP layer 9, which is the top surface, has a function of adhesive bonding to the lower surface of the joint 230 of the container cap 20, which will be described later, and the copolyester film layer has a function of easy peeling by adhering to the upper surface 12a of the container inlet 12 made of PET material. The copolyester film layer 46 is a polyester film that itself has a thermal adhesive function.

[0071] 5) PE container caps and PS (Polystyrene) containers From the bottom, 1) a 12μm to 150μm easy-peel film layer, 2) a 0.5μm to 10μm adhesive layer, 3) a 10μm to 150μm PET layer, 4) a 0.5μm to 10μm adhesive layer, 5) a 6μm to 200μm metal sheet (aluminum) layer, 6) a 0.5μm to 10μm adhesive layer, 7) a 10μm to 150μm PET layer, 8) a 0.5μm to 10μm adhesive layer, 9) a 0.5μm to 150μm PP layer The PP layer 9, which is the top surface, has a sticky adhesive function with the lower surface of the joining portion 230 of the container cap 20 described later, and the copolyester film layer adheres to the upper surface 12a of the container inlet 12 made of PS material and has an easy-to-peel function.

[0072] 6) PE container cap and PE container From the bottom, 1) a 12μm to 150μm easy-peel layer, 2) a 0.5μm to 10μm adhesive layer, 3) a 10μm to 150μm PET layer, 4) a 0.5μm to 10μm adhesive layer, 5) a 6μm to 200μm metal sheet (aluminum) layer, 6) a 0.5μm to 10μm adhesive layer, 7) a 10μm to 150μm PET layer, 8) a 0.5μm to 10μm adhesive layer, 9) a 0.5μm to 150μm PP layer The PP layer 9 on the top surface has a sticky adhesive function with the lower surface of the joining portion 230 of the container cap 20 made of PE material, which will be described later, and the easily peelable layer on the bottom surface adheres to the upper surface 12a of the container inlet 12 made of PE material, thereby having an easily peelable function.

[0073] Each layer of the sealing member 30 will now be described. -Easily peelable functional layer There are two methods for forming the layer having the easily peelable function: liquid coating and melt extrusion coating.

[0074] The liquid coating method is a method of coating the surface of a film or sheet using a gravure printing machine (M / C), microgravure machine (M / C), or dry lamination machine (M / C) to make a water-based or oil-based liquid material by combining resins such as m-PE, LDPE, HDPE, LLDPE, PP, EVA, olefin, EAA, EMA, EMAA, EEA, and rubber.

[0075] The melt extrusion coating method uses an extrusion lamination M / C to extrude film or sheet at a certain thickness. It is a method in which resin chips made from a combination of resins such as m-PE, LDPE, HDPE, LLDPE, PP, EVA, olefin, EAA, EMA, EMAA, EEA, and rubber are melted in the extruder at high temperatures between 150 and 350°C and extruded through a T-die to adjust the thickness.

[0076] -Adhesive layer The adhesive layer uses a two-component polyurethane that has excellent heat resistance, cold resistance, and water resistance, and can be bonded by laminating the film or sheet with the adhesive using a dry laminate M / C and then curing it.The adhesive can be composed of a base agent (polyester, polyether), a curing agent (isocyanate), and a solvent (MEK, EA).

[0077] -PET film layer The biaxially oriented polyester film has excellent heat and cold resistance, and is corona discharge treated on both sides to maintain a surface tension of 36~60dyne / cm.

[0078] -Aluminum foil layer (metal sheet layer) Hard or soft aluminum foil with a surface tension of 60 dyne / cm or more on both sides can be used. Materials that can be used include A1235, A1100, and other A1000 series aluminum foils with a purity of 99% or more.

[0079] -Easy-peelable Co-EX film layer This is a multi-layer co-extruded film, a functional film with an easily peelable thermal adhesive layer. Multi-layer films are produced by combining resins such as m-PE, LDPE, HDPE, LLDPE, PP, EVA, olefin, EAA, EMA, EMAA, EEA, and rubber. Films can range from single-layer to 12-layer depending on the configuration of the extruder.

[0080] -Co-EX film layer This is a multi-layer co-extruded film, and is the most commonly used form for general thermal bonding applications. Multi-layer films are produced by combining resins such as m-PE, LDPE, HDPE, LLDPE, PP, EVA, olefin, EAA, EMA, EMAA, EEA, and rubber. It does not have easy peeling properties and is used as the core of thermal bonding. Films can be produced in a variety of layers, from single layer to 12 layers, depending on the extruder configuration.

[0081] The sealing member 30 as described above adheres to the lower surface of the joining portion 230 of the container cap 20 at its upper surface and to the upper surface 12a of the container inlet 12 at its bottom surface by utilizing heat generated in the metal sheet layer by application of high frequency (i.e., induction method).

[0082] In this case, the upper and lower surfaces of the sealing member 30 may be configured to have different physical properties, and the sealing member 30 may be provided with a mark, such as a color, symbol, or letter, for distinguishing the upper and lower surfaces.

[0083] Furthermore, as shown in Fig. 4C, the sealing member 30 having the above-described configuration can be used either in a state where it is removed from the container cap 20 after the container cap 20 is separated from the container inlet 12, or in a state where it is stored inside the container cap 20. For reference, Fig. 4C shows the skirt 450 in an unseparated state for convenience, but in actual use, the bridge 451 breaks and the skirt 450 remains at the container inlet 12.

[0084] In particular, the sealing member 30 having the composition set forth in 1) to 4) above has the advantage that when used while stored inside the container cap 20, it can ensure a certain degree of adhesive strength to the container inlet 12, thereby maintaining a certain degree of sealing effect of the container 10.

[0085] Meanwhile, considering that the sealing member 30 is connected to the upper surface 12a of the container inlet 12 and the bottom surface of the connecting portion 230 of the container cap 20, it is preferable that the edge 31 is formed to be more rigid than the remaining inner portion 32.

[0086] For this purpose, the rigidity of the sealing member 30 can be reinforced by increasing the thickness of the edge portion 31, particularly the thickness of the metal sheet layer 311, or by forming it to have a higher hardness.

[0087] In addition, the sealing member 30 may be provided with ribs or the like at a level that does not interfere with adhesion and sealing of the upper surface 12a of the container inlet 12 and the bottom surface of the connecting portion 230 of the container cap 20 in order to reinforce its rigidity.

[0088] Hereinafter, the present invention will be described with reference to the drawings, focusing on the features of each embodiment. For the sake of convenience, the same or similar parts are omitted, and it goes without saying that each embodiment is not limited to the embodiment and can be combined with each other.

[0089] The container cap 20 includes a cap body 210 coupled to the container inlet 12 , and a seal member separating portion 220 provided on the cap body 210 to separate the seal member 30 from the cap body 210 .

[0090] The cap body 210 is configured to be coupled to the container inlet 12 and can have various structures.

[0091] The cap body 210 may have a cylindrical shape corresponding to the planar shape of the container inlet 12 .

[0092] In addition, the cap body 210 can be connected to the container inlet 12 in various ways, such as by fitting or screwing.

[0093] For example, the cap body 210 may have a female screw portion 213 formed on its inner surface, which is screwed onto the male screw portion 13 formed on the container inlet 12 , and may be threadedly coupled to the container inlet 12 .

[0094] In addition, the cap body 210 may be composed of a partition portion 212 formed on the upper side based on the coupling portion 230 described later at the same level or higher than the upper surface of the pressing portion 221 described later, and a container coupling portion 211 coupled to the container inlet 12.

[0095] The partition wall 212 is formed to be flush with or higher than the upper surface of a pressing portion 221 (to be described later) so that the pressing portion 221 (to be described later) is not pressed arbitrarily, and various configurations are possible.

[0096] The container connection part 211 is a part that is connected to the container inlet 12, and can have various configurations depending on the connection structure of the container inlet 12, and can be configured to seal the inside of the container 10 before and after removal of the sealing member 30.

[0097] Meanwhile, the container coupling part 211 has a skirt 240 connected to a plurality of bridges 241 at its lower end.

[0098] The skirt 240 is connected to the container cap 20 in a state where it is engaged with the skirt engaging portion 14 formed on the container entrance 12, and when the container cap 20 is opened for the first time, the bridge 241 breaks, so that it can be used to confirm whether the container cap 20 has been opened for the first time.

[0099] Meanwhile, when the container cap 20 is separated from the container inlet 12 by rotation, the seal member 30 attached to the upper end of the container inlet 12 must also be separated. The seal member 30 must be attached to the container cap 20.

[0100] Here, various embodiments are possible depending on the coupling structure between the sealing member 30 and the container cap 20.

[0101] In one embodiment of the present invention, the upper surface of the sealing member 30 is attached to the cap body 210. Therefore, the cap body 210 may include a coupling portion 230 to which the upper surface of the edge 31 of the sealing member 30 is attached, corresponding to a portion coupled to the upper surface 12a of the container inlet 12.

[0102] The coupling portion 230 is configured to be attached to the upper surface of the edge 31 of the sealing member 30 in correspondence with the portion coupled to the upper surface 12a of the container inlet 12, and may have various configurations.

[0103] That is, the coupling portion 230 is formed integrally with the cap body 210 and protrudes inward from the inner circumferential surface of the cap body 210 so as to be in close contact with the upper surface of the sealing member 30 .

[0104] For example, the coupling portion 230 may have a flat surface so as to come into close contact with the upper surface of the sealing member 30, as shown in FIGS. 7 to 10F, 13 and 19.

[0105] As another example, a groove may be formed in one of the upper ends of the coupling portion 230 and the container inlet 12 so that one can be inserted and fit tightly, and the other may be partially inserted into the groove.

[0106] More specifically, the coupling portion 230 may form the groove S2 into which the upper end of the container inlet 12 is inserted, as shown in FIGS. 3, 4A, and 4B.

[0107] The groove S2 is a groove into which the upper end of the container inlet 12 is inserted, and may have a circular shape corresponding to the shape of the container inlet 12 when viewed from above.

[0108] Meanwhile, after the sealing member 30 is removed from the container cap 20 having the above-described configuration, when the container cap 20 is coupled to the container inlet 12, the upper end of the container inlet 12 is inserted into the groove S2.

[0109] At this time, the groove S2 and the insertion joint at the upper end of the container inlet 12 are tightly attached to each other (the material of the container cap 20 is a plastic material such as PP or PET, and considering the soft characteristics of plastic, the tight attachment state is sufficiently maintained during pressure attachment), so that the container 10 can be kept sealed even if the sealing member 30 is removed.

[0110] That is, it is preferable that the groove S2 has an inner peripheral surface that maintains a state of tight contact as much as possible when the upper end of the container inlet 12 is inserted.

[0111] In particular, as shown in Figures 13 to 14B, the groove S2 and the upper end portion of the container inlet 12 are formed with one or more protruding annular protrusions 231, which improves the adhesion between the groove S2 and the upper end portion of the container inlet 12 and allows the container 10 to maintain a sealed state even when the sealing member 30 is removed.

[0112] The annular protrusion 231 is a protrusion that protrudes from the inner peripheral surface of the groove S2, and is formed annularly along the circumferential direction in consideration of the sealing force.

[0113] Furthermore, the upper end portion of the container inlet 12 may be formed with two or more protrusions 236 that form multiple concentric circles when viewed from above, as shown in Figure 15, so that one or more grooves are formed to increase adhesion when fitting into the groove S2.

[0114] The two or more protrusions 236 are formed to form multiple concentric circles when viewed from above, and as a result, when inserted into the groove S2, they deform, improving the adhesion between the groove S2 and the upper end portion of the container inlet 12, thereby maintaining the sealed state of the container 10 even when the sealing member 30 is removed.

[0115] Meanwhile, it goes without saying that the annular protrusion 236 and the groove S2 coupling structure can be positioned inversely between the container inlet 12 and the coupling portion 230.

[0116] In addition, as an opposite structure to the above-mentioned annular protrusion 231, at least a portion of the inner and outer surfaces of the portion of the container inlet 12 that fits into the groove S2 can be formed with one or more annular protrusions (not shown).

[0117] Meanwhile, the upper end portion of the container inlet 12 inserted into the groove S2 may be formed to have a small radial thickness or a tapered shape in consideration of the insertion structure.

[0118] As an example, the upper end portion of the container inlet 12 may be formed to have a smaller radial thickness than the lower portion.

[0119] The upper end portion of the container inlet 12 can be formed to be pointed upward.

[0120] On the other hand, it goes without saying that the embodiment shown in FIG. 15 may be combined with the embodiments shown in FIGS. 13 to 14B.

[0121] According to the groove S2 and its insertion structure, the container cap 20 can operate as follows.

[0122] First, before the first opening, the seal member 30 that seals the container inlet 12 and the container cap 20 are connected to the container inlet 12 .

[0123] When a user separates the container cap 20 by twisting or snapping it off, the container cap 20 and the seal member 30 are separated together from the container inlet 12 due to the relative strength of the attachment force of the seal member 30 to the container cap 20 .

[0124] After the user has discharged the contents contained in the container 10 to the outside, such as by drinking, the container 10 can be sealed by reattaching the container cap 20 to the container inlet 12.

[0125] At this time, the sealing member 30 can ensure a certain degree of sealing force due to the easily peelable function of the surface that contacts the container inlet 12.

[0126] Meanwhile, when the user presses the pressing portion 221 as desired, the sealing member 30 can be separated from the container cap 20 and removed.

[0127] After removing the sealing member 30, the user reattaches the container cap 20 to the container inlet 12, and as shown in Figures 4A and 4B, the container cap 20 attached to the container inlet 12 can seal the container 10 using the groove S2 and container inlet 12 insertion structure described above, and one or more sealing means described below.

[0128] Meanwhile, the cap body 210 may have a support portion 233 protruding inward at a distance from the bottom surface of the coupling portion 230 with which the upper surface of the sealing member 30 contacts, so that the sealing member 20 separated from the container inlet 12 remains coupled to the container cap 20.

[0129] The support portion 233 is configured to protrude inward from the inner surface of the cap body 210 at a distance from the bottom surface of the coupling portion 230 with which the upper surface of the sealing member 30 contacts, so that the sealing member 20 separated from the container inlet 12 remains coupled to the container cap 20, and various configurations are possible.

[0130] The support portion 233 can have any shape as long as a portion of the edge of the seal member 30 can be inserted therein, and the distance between the bottom surface of the connecting portion 230 and the top surface of the seal member 30 can be formed to be substantially the same as, larger than, or smaller than the thickness of the seal member 30.

[0131] The seal member separating portion 220 is provided on the cap body 210 and separates the seal member 30 from the cap body 210, and various configurations are possible.

[0132] As an example, as shown in Figures 2 to 6D, the sealing member separating portion 220 may include a pressing portion 221 that moves downward to pressurize the sealing member 30 and separate the sealing member 30 from the cap body 210, and a connecting portion 222 that connects the cap body 210 and the pressing portion 221 so that the pressing portion 221 can move downward by elastic deformation.

[0133] The pressing portion 221 is configured to move downward to pressurize the sealing member 30 and separate the sealing member 30 from the cap main body 210, and any configuration that can be provided on the cap main body 210 so as to be able to move downward is possible. For example, the pressing portion 221 may have various shapes such as a circular, elliptical, rectangular, or star-shaped planar shape.

[0134] In addition, the pressing part 221 can have various functions depending on the structure of the connecting part 222, such as maintaining a lowered state when pressed by a user or returning to its original position by elasticity.

[0135] On the other hand, the pressing portion 221 has one or more pressure portions 223 for pressing the sealing member 30 provided on the bottom surface.

[0136] The pressure applying portion 223 is configured to apply pressure to the sealing member 30 in response to the downward movement of the pressing portion 221, and may be formed of one or more pressure applying portions.

[0137] The pressure applying section 223 may have any configuration as long as it is capable of applying pressure to the seal member 30 .

[0138] For example, the pressure member 223 may have a ring-shaped planar shape as shown in FIG. 6B, or a semicircular shape as shown in FIG. 6C.

[0139] As another example, the pressure applying portion 223 may have various shapes depending on the planar shape of the pressing portion 221, as shown in FIGS. 18A to 18D.

[0140] For example, the pressing part 221 may be formed eccentrically from the center of the container cap 20, and in this case, the pressing part 223 may have various structures according to the position and shape of the pressing part 221.

[0141] As shown in FIG. 18A, when the pressing portion 221 has a circular shape that is eccentric from the center of the container cap 20, the pressure applying portion 223 may have various planar shapes such as a circle, an oval, or a square.

[0142] As shown in FIGS. 18B and 18D, when the pressing portion 221 has an elliptical shape that is eccentric from the center of the container cap 20, the pressure applying portion 223 may have various planar shapes such as a circle, an ellipse, or a square.

[0143] As shown in FIG. 18C, when the pressing portion 221 is semicircular and eccentric from the center of the container cap 20, the pressure applying portion 223 may have various planar shapes such as a circle, a semicircle, an oval, or a square.

[0144] The connecting portion 222 is configured to connect the cap body 210 and the pressing portion 221 so that the pressing portion 221 can move downward by the elastic deformation, and various configurations are possible.

[0145] In particular, it is preferable that the connecting portion 222 is integrally formed with the pressing portion 221 and the cap body 210 .

[0146] Furthermore, it is preferable that the connecting part 222 maintains a vertically movable state, such as returning to its original state after the pressing part 221 descends, and for this purpose, it may have various structures such as a thin film or a bellows structure.

[0147] 3, the connecting portion 222 may be formed to separate the cap body 210 from the top and bottom together with the pressing portion 221.

[0148] That is, it is preferable that the entire container cap 20 is formed by injection molding, but it is preferable that the sealing member separation portion 220 is formed integrally with the cap body 210 so as to seal the container 10 when the cap body 210 is coupled to the container inlet 12.

[0149] In this case, when the sealing member 30 is coupled to the container cap 20, a separate, sealed auxiliary space S1 is formed, and auxiliary substances that can be consumed together when drinking may be stored in the auxiliary space S1.

[0150] The auxiliary material may be any material that can be contained in the auxiliary space S1, such as a granular material, a powder material, or a liquid material.

[0151] 12A and 12B, the connecting portion 222 may be formed of a plurality of bands that are elastically deformable between the inner periphery of the cap body 210 and the pressing portion 221. As shown in FIG.

[0152] At this time, it is preferable that the connecting portion 222 can seal the container cap 20 in the up and down directions, and maintain the state in which the sealing member 30 is coupled to the container cap 30 .

[0153] Meanwhile, when the connecting portion 222 is formed of a plurality of bands, various structures such as a zigzag structure, a wire structure, etc. may be used.

[0154] In addition, one or more bridges 219 may be formed along the circumferential direction between the inner periphery of the cap body 210 and the pressing portion 221 to confirm whether the pressing portion 221 can be initially lowered.

[0155] The bridge 219 is configured to be provided along the circumferential direction so as to confirm whether the pressing part 221 can be initially lowered or not, and is formed of a thin band that connects the inner circumference of the cap body 210 and the pressing part 221. Here, it is preferable that the connecting part 222 is elastically deformable so as to allow the pressing part 221 to be lowered, and it is preferable that the bridge 219 is formed to break when the pressing part 221 is lowered.

[0156] Meanwhile, the container assembly having the above-described configuration can be used through the following process.

[0157] First, the sealing member 30 is inserted into the container cap 20 and attached to the container 10 according to the type of contents to be contained in the container 10, such as beverages, alcoholic beverages, engine oil, antifreeze, cooking oil, dairy products, etc.

[0158] Then, by applying high frequency, i.e., induction, the sealing member 30 adheres to the coupling portion 230 of the container cap 20 and the upper surface 12a of the container inlet 12, thereby sealing the container 10.

[0159] The container assembly, which has been commercially available through the above procedure, is used by the user by separating the container cap 20 from the container 10.

[0160] At this time, when the container cap 20 is separated from the container 10, the bonding force of the sealing member 30 to the container cap 20 is greater than the bonding force to the container inlet 12, so that the sealing member 30 is also separated from the container inlet 12 when the container cap 20 is separated.

[0161] When the container cap 20 is separated, the sealing member 30 is also separated, so that the user can tilt the container 10 to drink or use the contents as desired.

[0162] On the other hand, the user may use the contents contained in the container 10 repeatedly in addition to using them all at once, in which case the container cap 20 is attached to the container 10 to seal the container 10.

[0163] In this case, depending on the configuration of the sealing member 30, when it is reattached to the container 10 while still attached to the container cap 20, it can provide sufficient sealing force to the container 10, thereby effectively sealing the container 10.

[0164] Furthermore, the container assembly according to the present invention is characterized in that, due to the above-described structure, sufficient sealing force of the container cap 20 to the container 10 is maintained even when the sealing member 20 is removed from the container cap 20.

[0165] Furthermore, the container assembly according to the present invention can provide sufficient sealing force of the container cap 20 to the container 10 even after the sealing member 20 is removed from the container cap 20 as described below.

[0166] The inner peripheral surface of container inlet 12, the upper end portion of container inlet 12, and the outer peripheral surface of container inlet 12 may be areas that provide sufficient sealing force of container cap 20 to container 10. In Figures 10A to 10F, Figures 10A to 10C are cross-sectional views before the sealing member is removed, and Figures 10D to 10F are cross-sectional views after the sealing member has been removed.

[0167] As a first example, a sealing means may be provided at the top end portion of the container inlet 12 to provide sufficient sealing force of the container cap 20 to the container 10 when the container cap 20 is coupled to the container inlet 12 .

[0168] Specifically, as described with reference to Figures 3, 4A to 5B, a groove may be formed on either the upper end of the coupling portion 230 or the upper end of the container inlet 12 so that one can be inserted and fit tightly, and the other may be partially inserted into the groove.

[0169] As shown in FIGS. 10D to 10F, a ring-shaped protrusion 234 is formed on the bottom surface of the coupling portion 230, and a recessed groove 235 into which the ring-shaped protrusion 234 is inserted is formed on the upper surface 12a of the container inlet 12.

[0170] Here, the bottom surface of the annular protrusion 234 and the top surface 12a of the container inlet 12 are maintained in a state in which the top and bottom surfaces of the sealing member 30 are adhered to each other, and when the container cap 20 is attached to the container inlet 12 after the sealing member 30 is removed, the annular protrusion 234 is inserted into the groove 235, thereby sealing the inside of the container 10.

[0171] As a second example, a sealing means may be provided on the inner circumferential surface of the container inlet 12 to provide sufficient sealing force of the container cap 20 to the container 10 when the container cap 20 is coupled to the container inlet 12 .

[0172] The container cap 20, particularly the bottom surface of the connecting portion 222, the pressing portion 221 and the pressure portion 223, is provided with a seal that is tightly fitted to the inner surface of the container inlet 12, thereby providing sufficient sealing force of the container cap 20 to the container 10 when the container cap 20 is connected to the container inlet 12.

[0173] At this time, the inner circumferential surface of the container inlet 12 may be formed with one or more protrusions 274 that protrude further inward to enhance the sealing force.

[0174] The protrusion 274 is formed to provide sufficient sealing force of the container cap 20 to the container 10 by contacting with either the bottom surface of the connecting portion 222, the pressing portion 221 or the pressure portion 223, and preferably has a ring shape.

[0175] The protrusion 274 is preferably formed by a combination of recesses and protrusions, and has a curved surface to maintain a tight contact state.

[0176] In addition, the upper surface of the protrusion 274 may be extended further inward to be used as a surface that is adhered to the bottom surface of the sealing member 30 described above.

[0177] Meanwhile, it is preferable that any one of the bottom surface of the connecting portion 222, the pressing portion 221 and the pressure applying portion 223 is formed in the shape of an annular band 264 for close contact with the protrusion 274, as shown in Figures 10D, 10E and 10F.

[0178] In order to increase the adhesive force with the protrusion 2741, the annular band 264 preferably has an inclined surface so that it comes into closer contact with the protrusion 274 when it descends.

[0179] In addition, instead of the annular band 264 being separately formed on any one of the bottom surface of the connecting portion 222, the pressing portion 221, and the pressure portion 223, the pressure portion 223 may play the role of the annular band 264 as shown in FIG. 15.

[0180] Also, it goes without saying that the annular band 264 may be formed as a part of the pressure portion 223, protruding separately from the side surface.

[0181] As a third example, a sealing means may be provided on the outer periphery of the container inlet 12 to provide sufficient sealing force of the container cap 20 to the container 10 when the container cap 20 is coupled to the container inlet 12 .

[0182] As shown in Figures 10A, 10D, 10E, and 10F, an inclined surface 262 is formed on the outer peripheral surface of the upper end of the container inlet 12, sloping it upward, and the container cap 20 is formed with one or more tightly sealed portions 251 that fit tightly against the inclined surface 262, thereby providing sufficient sealing force of the container cap 20 to the container 10.

[0183] The inclined surface 262 is a surface that slopes upward on the outer circumferential surface of the upper end of the container inlet 12, and may be a flat surface, a curved surface, or the like.

[0184] As shown in Figures 10A, 10D, and 10E, the tightly sealing portion 251 is a portion that is in close contact with the inclined surface 262, and may be formed by protruding from the container cap 20, for example, the bottom surface of the coupling portion 230 and / or the inner surface of the container coupling portion 211.

[0185] The shape of the tightly sealing portion 251 may be various shapes such as a strip shape (with a straight or pointed end face) or a stepped shape as shown in FIG. 10D.

[0186] By forming one or more tightly sealing portions 251 on the container cap 20 that fit tightly against the inclined surface 262, sufficient sealing force of the container cap 20 to the container 10 can be provided.

[0187] In addition, the tightly sealing portion 251 can also be formed as an inclined surface 258 that is in close contact with the inclined surface 262, as shown in FIG. 10F.

[0188] Using a method different from that for forming the inclined surface 262, one or more annular outer protrusions 261, 262 can be formed on the outer peripheral surface of the container inlet 12, as shown in Figures 9, 10A and 10B.

[0189] The outer protrusions 261 and 262 are formed to protrude outward from the outer peripheral surface of the container inlet 12 , and protrude to an extent that the container cap 20 does not interfere with the container inlet 12 .

[0190] On the other hand, when two or more outer protrusions 261 are formed, they may be formed so that the degree of protrusion from the outer circumferential surface of the container inlet 12 increases from the top to the bottom, taking into consideration the downward movement when the container cap 20 is attached to the container inlet 12.

[0191] The tightly sealing portion 251, which is in close contact with the outer protrusions 261 and 262, is a portion that is in close contact with the outer protrusion 261, as shown in Figures 9, 10A, and 10B, and may be formed by protruding from the container cap 20, for example, the bottom surface of the coupling portion 230, the support portion 233, and / or the container coupling portion 211.

[0192] In addition, when tightly sealing with the outer protrusions 261 and 262, an inclined surface 254 may be formed on the container cap 20, for example, on the bottom surface of the coupling portion 230, the support portion 233 and / or the container coupling portion 211.

[0193] As shown in FIGS. 10B and 21, when the container cap 20 is coupled to the container inlet 12, the inclined surface 254 can be lowered to come into close contact with the outer protrusion 261 and seal the inside of the container 10.

[0194] As a fourth example, by providing a sealing means on the outer surface of the container inlet 12 near the lower end of the container connection portion 211 of the container cap 20, sufficient sealing force of the container cap 20 against the container 10 can be provided when the container cap 20 is connected to the container inlet 12.

[0195] As an example, one or more sealing protrusions 267 are formed near the lower end of the container cap 20 to adhere to a contact surface 271 formed on the outer periphery of the container inlet 12, and the outer periphery of the container inlet 12 can provide sufficient sealing force of the container cap 20 to the container 10 by contacting the sealing protrusions 267.

[0196] The adhesion protrusion portion 267 is formed near the lower end of the container cap 20 and is a part that adheres to the contact surface 271 formed on the outer periphery of the container inlet 12, and is characterized in that it is formed in one or more portions and is formed to adhere to the contact surface 271.

[0197] As an example, when the container cap 20 is coupled to the container inlet 12, the sealing protrusion 267 can provide sufficient sealing force for the container cap 20 to the container 10 by descending and sealing the end and / or side against the contact surface 271 formed on the outer periphery of the container inlet 12.

[0198] It goes without saying that the above-mentioned sealing means can be provided on the container cap 20 and the container inlet 12 either alone or in combination of two or more.

[0199] Furthermore, it goes without saying that the sealing means described above, which are configured by a combination of protrusions, grooves, inclinations, etc., can be positioned at different positions on the container cap 20 and the container inlet 12.

[0200] That is, an annular protrusion may be formed on either the container cap 20 or the container inlet 12, and the other may be configured to tightly contact the annular protrusion to seal the inside of the container 10.

[0201] The above is merely a description of some of the preferred embodiments that can be realized by the present invention, and as is well known, the scope of the present invention should not be interpreted as being limited to the above-mentioned embodiments, and the technical ideas of the above-mentioned inventions and technical ideas combining those ideas are all included in the scope of the present invention.

Claims

1. a container for containing contents; a container cap coupled to the container inlet; a sealing member having a bottom surface attached to an upper end of the container inlet of the container and coupled to the container cap; Including, a bonding force between the sealing member and the container cap is greater than a bonding force between the container inlet and the sealing member so that the entire sealing member is separated from the upper end of the container inlet when the container cap is separated from the container by rotation; The container cap is a cap body coupled to the container inlet; a seal member separating portion provided on the cap body and configured to separate the seal member from the cap body; The seal member separating portion is a pressing portion that moves downward to pressurize the sealing member and separate the sealing member from the cap body; a connecting portion that connects the cap body and the pressing portion so that the pressing portion can be moved downward by elastic deformation, The container assembly is characterized in that the pressing portion has one or more pressing portions provided on the bottom surface for pressing the sealing member.

2. 2. The container assembly of claim 1, wherein the top surface of the sealing member is adhesively attached to the container cap.

3. 2. The container assembly according to claim 1, wherein the cap body includes a connecting portion to which an upper surface of the rim of the sealing member is attached, the connecting portion corresponding to a portion connected to the upper surface of the container inlet.

4. 4. The container assembly according to claim 3, wherein the connecting portion has a flat surface that is in close contact with the upper surface of the sealing member.

5. The coupling portion and the upper end of the container inlet are 4. The container assembly according to claim 3, wherein a groove is formed in one of the containers so that one of the containers can be inserted and fit snugly, and the other container is partially inserted into the groove.

6. The container assembly according to claim 5, wherein the coupling portion is formed with the groove into which the upper end of the container inlet is inserted.

7. 7. The container assembly according to claim 1, wherein the connecting portion is integrally formed with the pressing portion and the cap body.

8. 7. The container assembly according to claim 1, wherein the connecting portion is formed of a plurality of bands that are elastically deformable between the inner periphery of the cap body and the pressing portion.

9. 7. A container assembly according to claim 1, wherein the seal member separating portion is integrally formed with the cap body so as to seal the container by the pressing portion and the connecting portion when the cap body is connected to the container inlet.

10. A container assembly comprising a container for containing contents, a container cap connected to the container inlet, and a sealing member whose bottom surface is attached to the upper end of the container inlet of the container and connected to the container cap, characterized in that the container cap is used in the container assembly described in any one of claims 1 to 6.

11. The container cap according to claim 10, wherein the pressing portion has one or more pressing portions provided on a bottom surface thereof for pressing the sealing member.

12. The container cap according to claim 10, wherein the connecting portion is integrally formed with the pressing portion and the cap body.

13. 11. The container cap according to claim 10, wherein the connecting portion is formed of a plurality of bands that are elastically deformable between the inner periphery of the cap body and the pressing portion.

14. The container cap according to claim 10, characterized in that the seal member separation portion is integrally formed with the cap body so as to seal the container by the pressing portion and the connecting portion when the cap body is connected to the container inlet.

Images