A container closing device fixable to the neck of a container, and a packaging container and component thereof

Abstract

The present application relates to the technical field of packaging containers, and provides a container closure device that can be fixed to the neck of a container, which has a cover structure and a cavity structure, and is provided with a first positioning stop buckle, a first snap buckle, and a sealing sheet, and the outer wall of the sealing sheet is provided with a recessed chamber structure and a support and pressure structure, and the tail end of the cavity structure is provided with a channel structure that can be sealed by a channel seal; the container closure device can be installed and fixed on a container with an open container neck and a main chamber, and the container neck is provided with a second positioning stop buckle, a second snap buckle, and a sharp structure, and the sharp structure of the container neck is in the recessed chamber structure of the container closure device, and the sharp structure can cut through the thinned connection structure between the sealing sheet and the inner wall of the cavity structure, so that the material in the container closure device is released. In addition, a packaging container and a component of the container closure device are provided.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging containers, and particularly relates to a container closing device that can be fixed to the neck of a container, and its packaging container and components. Background Art

[0002] In many applications such as the mixed packaging of different materials, it is very necessary to release each material into another material shortly before using the mixture of various materials. Storing the product in a pre-mixed form is usually impossible or undesirable because when the product is stored as a mixture for a period of time, it may react with each other undesirably or cause a decrease in the quality of the mixture. Common examples are, for example, two or more drug components, which have better stability and a longer shelf life when not mixed than when mixed; another example is for mixed liquid products such as beverages, liquid medicines, homogenized meals for special medical purpose formula foods, liquid cosmetics, liquid reagents, etc. During the product shelf life, two or more different materials in the product need to be stored separately to make it more conducive to the stability, freshness, functional guarantee or other quality improvements of the product. Existing technical solutions use two or more different packaging bottles / bags / boxes for independent packaging, and when used, they are recombined and used together, which is likely to cause many disadvantages such as inconvenient carrying, inconvenient use, and easy to cause secondary pollution.

[0003] International patent applications WO2010 / 101389, WO2007 / 129116, WO2012 / 175934, etc. have all disclosed container closure devices with different structures and functions. However, the above disclosed technical solutions generally have the following disadvantages: (1) When the material in the container closure device is released into the container, the opening of the container neck is also opened simultaneously, resulting in the destruction of the container's sealing performance and failing to meet the requirement that the material still needs to be sealed after mixing and further treatment of the mixture; (2) When using the mixture in the container, the entire container closure device needs to be removed from the neck of the container, exposing the inner core structure of the container closure device to the outside of the container, which is prone to causing cross-contamination or accidental contamination of the mixture in the container; (3) After the material in the container closure device is released into the bottle, the closure device can be separated from the bottle. At this time, the material in the bottle has not been fully mixed evenly. If the bottle is shaken to mix the material evenly, the material will spill out of the bottle mouth, which is not conducive to the convenient use of consumers, and there are major defects in the final mixing of the material; (4) The container closure device requires more sealing links. It is necessary to simultaneously achieve various sealing performances between the container closure device and the container, between the container closure device and the outside world, and between the container and the outside world, making the production and use conditions of the container closure device harsh, the qualified rate low, and the cost of commercial application high, which is not conducive to industrial production and commercial application; (5) The container closure device is composed of more than three components, and its assembly, material filling, etc. are more difficult, with low production efficiency, high cost, and poor adaptability to large-scale industrial production. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a new container closure device, which has the functions of sealing, storing, and releasing materials, that is, the storage and release function of materials. The container closure device of the present invention can be installed and fixed at the neck opening of the container, seal the container to form a packaging container. The container closure device and the container can rotate relative to each other, but cannot be disassembled from the neck of the container. Before opening the packaging container, the user performs a screwing operation to release the material sealed and stored in the container closure device into the container, and mix and blend it with another material in the container.

[0005] The present invention also provides a packaging container, components including the container closure device, and a packaging composition including the container closure device.

[0006] Specifically, the present invention adopts the following technical solutions.

[0007] A container closure device that can be fixed to the neck of a container, wherein:

[0008] The container closing device has a lid perimeter structure and a barrel structure. The lid perimeter structure and the barrel structure are connected together to form an annular cylindrical structure. On the inner wall of the lid perimeter structure, there is a first snap fastener that can be interconnected and fixed with the neck of the container. The internal space of the barrel structure can accommodate materials. At the head end of the barrel structure, there is a sealing piece. On the outer wall of the sealing piece, there are a recess structure and a pressing structure. The recess structure indents from the outer wall of the sealing piece and protrudes from the inner wall of the sealing piece. The pressing structure is a convex structure on the outer wall of the sealing piece. Preferably, the pressing structure is arranged in the recess structure and is a convex structure;

[0009] At the connecting part between the sealing piece and the inner wall of the head end of the barrel structure, a sloped surface structure is provided to reduce its thickness, and then it is connected to the inner wall of the head end of the barrel structure to form a thinning connection structure. With such a structural arrangement, the connection between the sealing piece and the inner wall of the head end of the barrel structure through the thinning connection structure can not only achieve a good sealing effect but also be easily cut through. Preferably, the thickness of the sealing piece is 0.55 mm to 1.2 mm, preferably 0.7 mm to 0.9 mm. The thickness at the connection between the sealing piece and the head end of the barrel structure is 0.06 mm to 0.45 mm, preferably 0.08 mm to 0.35 mm, and most preferably 0.12 mm to 0.3 mm;

[0010] On the outer wall of the barrel structure or the inner wall of the lid perimeter structure, there is a first positioning and stopping catch;

[0011] At the tail end of the barrel structure, there is a channel structure. The channel structure has an opening or is in an open shape, and the channel structure communicates with the internal space of the barrel structure. Further, a channel seal is used to seal the opening of the channel structure. The channel seal includes a sealing cover, a sealing film, or a sealing plug. The channel seal has the function of sealing the internal space of the barrel structure. After the container closing device of the present invention is installed on the neck of the container to form a packaging container, it can keep the materials in the container closing device in a sealed state, and can enable the mixed materials to flow from the main chamber of the container through the channel structure of the container closing device. By opening the channel seal, the mixed materials can be discharged to the outside of the packaging container. Preferably, on the channel structure, there is a threaded or snap structure, and a sealing cover with a threaded or snap structure, such as a screw cap or a pull-tab lid, is installed on the channel structure through the threaded or snap structure to seal the channel structure;

[0012] Alternatively, the sealing cover is installed on the channel structure by bonding or welding to seal the channel structure;

[0013] Alternatively, the sealing film is installed on the tail end of the channel structure by bonding or welding to seal the channel structure;

[0014] Alternatively, a rubber stopper is installed on the channel structure to seal the channel structure. When needed, the rubber stopper can be removed, punctured, or pierced, for example, for sealing a packaging container for pharmaceutical injections.

[0015] The container has an open container neck and a body chamber, and a second snap fastener capable of being interconnected and fixed with the container closure device is provided on the outer wall of the container neck. A sharp structure is provided on the inner wall of the container neck, and a second positioning stop catch is provided on the inner wall or the outer wall of the container neck; the sharp structure preferably has a sharp structure or a spiky structure.

[0016] The container closure device of the present invention and the container can be assembled together to form a packaging container. The first positioning stop catch of the container closure device is interconnected with the second positioning stop catch of the container neck, and the sharp structure of the container neck is placed in the recess structure of the container closure device. By engaging the first snap fastener of the container closure device with the second snap fastener of the container neck, the container closure device can be assembled with the container, and the container closure device can be installed and fixed on the neck of the container to seal the opening of the container neck, thereby closing the container to form a packaging container.

[0017] It should be noted that by engaging the first snap fastener of the container closure device with the second snap fastener of the container neck, the container closure device is installed and fixed on the container neck and cannot be disassembled from the container neck, but the container closure device and the container neck can rotate relative to each other.

[0018] The container closure device and its packaging container of the present invention can well realize the functions and assembly of the container closure device of the present invention. By interconnecting the first positioning stop catch of the container closure device with the second positioning stop catch of the container neck, it can be ensured that the container closure device and the container neck are assembled at a preset position. Further, by engaging the first snap fastener of the container closure device with the second snap fastener of the container neck, it is ensured that the sharp structure of the container neck is placed in the recess structure of the sealing piece of the container closure device, avoiding accidental piercing or cutting of the sealing piece by the sharp structure.

[0019] The internal space of the barrel structure of the container closure device accommodates the material, and a channel seal is used to seal the opening of the channel structure of the container closure device, so that the material is sealed and stored in the container closure device.

[0020] Functions and structural roles of the container closing device of the present invention: The first positioning and stopping catch of the container closing device is connected to the second positioning and stopping catch of the container neck to play a positioning role, enabling the container closing device and the container neck to be assembled at a preset position, ensuring that the sharp structure of the container neck is in the recess structure of the container closing device, preventing the sharp structure from accidentally puncturing the sealing piece at the head end of the barrel structure, and ensuring that the container closing device and the container neck are in a relatively stable position during and after assembly; The container closing device and the container can be assembled together by connecting and buckling the first buckle of the container closing device and the second buckle of the container neck together, and the container closing device and the container neck can rotate relative to each other.

[0021] During use, due to the mutual connection and stopping action of the first positioning and stopping catch and the second positioning and stopping catch at the initial position, the container closing device and the container neck can only rotate relative to each other in one direction. When the container closing device is screwed to cause relative rotation between the container closing device and the container neck, the sharp structure of the container neck starts to slide out of the recess structure of the container closing device, and the sharp structure can cut through the thinning connection structure between the sealing piece and the inner wall of the barrel structure. When the cutting reaches a predetermined position, the first positioning and stopping catch and the second positioning and stopping catch engage again to prevent relative rotation between the container closing device and the container neck. At this time, the sharp structure of the container neck and the pressing structure on the sealing piece also engage with each other and generate mutual lateral pushing force or squeezing force, pushing open the incision between the sealing piece and the inner wall of the barrel structure. At this time, the part of the sealing piece that is not cut and is still connected to the inner wall of the barrel structure, that is, the part of the sealing piece at the recess structure, is still connected to the inner wall of the barrel structure, using the part at the recess structure of the sealing piece as the fixed part, pushing the incision of the sealing piece into the interior of the barrel structure, or pushing the incision of the sealing piece to the outside of the barrel structure, further increasing the distance between the incision of the sealing piece and the inner wall of the barrel structure to form a material outlet, enabling the material contained in the container closing device to be released into the container and mixed with the material in the container to achieve the functions of mixing and blending. Moreover, after the material is released into the main chamber of the container, the packaging container remains in an overall sealed state. When the mixed material needs to be used, just open the channel seal at the tail end of the barrel structure, and the mixed material can be finally discharged through the channel structure of the container closing device to achieve the purpose of using the mixed material.

[0022] It should be noted that pushing the cut of the sealing piece towards the inside of the barrel structure, or pushing the cut of the sealing piece towards the outside of the barrel structure, depends on the position and form of the support structure. Because different positions and forms of the support structure will cause different directions of the lateral pushing force when the sharp structure is joined with the support structure. When the inner side of the sharp structure is joined with the support structure, the direction of the lateral pushing force generated on the support structure is towards the inside of the barrel structure, causing the cut of the sealing piece to be pushed towards the inside of the barrel structure. When the outer side of the sharp structure is joined with the support structure, the direction of the lateral pushing force generated on the support structure is towards the outside of the barrel structure, causing the cut of the sealing piece to be pushed towards the outside of the barrel structure.

[0023] Similarly, it should be noted that pushing the cut of the sealing piece towards the inside of the barrel structure, or pushing the cut of the sealing piece towards the outside of the barrel structure, depends on the position and form of the support structure. Because different positions and forms of the support structure will cause different directions of the extrusion force when the sharp structure is joined with the support structure. Preferably, the wall of the tail end of the sharp structure is joined with the support structure to generate an extrusion force on the support structure, and the direction of this extrusion force is towards the inside of the barrel structure, causing the cut of the sealing piece to be pushed towards the inside of the barrel structure.

[0024] Furthermore, preferably, the support structure provided on the outer wall of the sealing piece is in a concave structure and is in a convex shape, and the wall part of the barrel structure connected to the concave structure presents a structure protruding from the inner wall to the outer wall. In this way, there can be a certain gap between the support structure and the inner wall of the barrel structure, that is, a reserved gap. Such a structural setting, when the sealing piece is cut to a predetermined position, can not only make the sharp structure at the neck of the container have an excessive joining effect with the support structure and generate a large lateral pushing force, but also when the sharp structure is joined with the support structure, the part of the sealing piece that is not cut and is still connected to the inner wall of the barrel structure, due to the existence of the reserved gap, will generate a large lever moment when the sharp structure is joined with the support structure, making the cut of the sealing piece more conducive to being pushed towards the inside of the barrel structure, and the process of pushing the sealing piece towards the barrel structure will be greater. In this way, a larger material outlet can be formed to ensure and facilitate the release of materials and the flow of the mixed materials.

[0025] Further, optionally, for the cylindrical structure at the first end connecting the sealing piece, the inner wall diameter thereof is smaller than that of the cylindrical structures of other parts of the cavity cylinder structure. With such a structural arrangement, when the sharp structure is engaged with the supporting and pressing structure and the incision of the sealing piece is pushed towards the inside of the cavity cylinder structure, a larger spacing is generated between the incision of the sealing piece and the inner wall of the cavity cylinder structure, forming a larger material outlet, which is more conducive to the release of materials and the flow of the mixed materials, and is particularly suitable for the storage and release of solid materials, such as coarse particles and amorphous lumps.

[0026] Specifically, for the container closing device, a recess structure, a supporting and pressing structure, and a first positioning and stopping buckle are provided. With such an arrangement, after the sealing piece is cut, a material outlet can be formed between the incision of the sealing piece and the inner wall of the cavity cylinder structure;

[0027] Correspondingly, a sharp structure is provided on the inner wall of the container neck, and a second positioning and stopping buckle is provided on the inner wall or outer wall of the container neck.

[0028] Alternatively, preferably, two recess structures, two supporting and pressing structures, and two first positioning and stopping buckles are provided on the container closing device. The two recess structures are distributed at symmetrical positions on the sealing piece, the two supporting and pressing structures are distributed at symmetrical positions on the sealing piece, and the two first positioning and stopping buckles are distributed at symmetrical positions on the outer wall of the cavity cylinder structure or at symmetrical positions on the inner wall of the cover surrounding structure; with such an arrangement, after the sealing piece is cut, two material outlets can be formed between the incision of the sealing piece and the inner wall of the cavity cylinder structure;

[0029] Correspondingly, two sharp structures are provided on the inner wall of the container neck, and two second positioning and stopping buckles are provided on the inner wall or outer wall of the container neck. The two sharp structures are distributed at symmetrical positions on the inner wall of the container neck, and the two second positioning and stopping buckles are distributed at symmetrical positions on the inner wall of the container neck or at symmetrical positions on the outer wall of the container neck;

[0030] As used in the present invention, "distributed at symmetrical positions" means that the structure is arranged in a symmetrical structure or an array structure with the central axis of the circumferential structure where it is located as the axis of symmetry. For example, with the central axis of the cylindrical structures of the cover surrounding structure and the cavity cylinder structure as the axis of symmetry, two recess structures, two supporting and pressing structures, and two first positioning and stopping buckles are arranged in a symmetrical structure or an array structure, and with the central axis of the circumferential structure of the container neck as the axis of symmetry, two sharp structures and two second positioning and stopping buckles are arranged in a symmetrical structure or an array structure.

[0031] Further, as required, a tight sealing structure capable of making the outer wall of the barrel structure airtight with the inner wall of the container neck is provided on the outer wall of the barrel structure. The tight sealing structure can be in close contact with the container neck to achieve the airtight effect, and maintain the airtight effect when the container closing device rotates relative to the container neck.

[0032] Further, as required, an anti-theft ring structure is provided at the head end of the lid surrounding structure. The anti-theft ring structure is connected to the lid surrounding structure by a bridge or a contact. Serrated ribs are provided on the inner wall of the anti-theft ring structure. Similarly, serrated ribs are also provided on the outer wall of the corresponding container neck. The serrated ribs of the two match each other. When the container closing device rotates relative to the container neck, under the interaction of the serrated ribs of the two, the bridge connection or the contact connection between the anti-theft ring structure and the lid surrounding structure is broken, so that the container closing device plays an anti-theft role and also prevents the container closing device from being accidentally rotated.

[0033] The container closing device of the present invention is made by injection molding with a polymer material, preferably made by injection molding with polyethylene (PE) or polypropylene (PP) material. In particular, when prepared by injection molding, the injection gate of the container closing device is provided on the inner wall or the outer wall of the sealing piece of the barrel structure. Preferably, the injection gate of the container closing device is provided at the central position of the inner wall or the outer wall of the sealing piece of the barrel structure. Most preferably, the injection gate of the container closing device is provided at the central position of the inner wall of the sealing piece of the barrel structure.

[0034] Based on the structural characteristics of the container closing device of the present invention, the inventor found that, under the same conditions of injection molding process, the thickness at the connection between the sealing piece and the head end of the barrel structure, the structural size, etc., when the injection gate of the container closing device is provided at the central position of the inner wall or the outer wall of the sealing piece, the qualified rate of the key sealing structure where the sealing piece is connected to the inner wall of the head end of the barrel structure by thinning can reach 100%. However, when the injection gate of the container closing device is provided at other positions, the qualified rate of the key sealing structure of the container closing device is significantly reduced.

[0035] The container of the present invention has an open container neck and a main body chamber, and the container neck is provided with a functional structure matching the container closing device. The container includes a packaging bottle, a packaging bag, a packaging can, a packaging cup, a packaging box or a packaging barrel, etc., a container made of a polymer material, metal, glass or ceramic; preferably, the container is a packaging bottle made of a polymer material, such as a plastic bottle made of polyethylene terephthalate (PET), polycarbonate (PC) or its derivatives, polystyrene (PS), polypropylene (PP) or polyethylene (PE); the packaging bottle is preferably prepared by a process method of blow molding a preform.

[0036] Furthermore, the present invention also provides a preform for manufacturing a packaging bottle. The preform has an open preform neck and a preform body. A second snap is provided on the outer wall of the preform neck, a sharp structure is provided on the inner wall of the preform neck, and a second positioning and stopping buckle is provided on the inner wall or the outer wall of the preform neck. The sharp structure preferably has a sharp structure or a spiked structure. The preform is made of a polymer material and can be formed into the packaging bottle of the present invention by a blow molding process. The preform body of the preform forms the main chamber of the packaging bottle through a blow molding process.

[0037] Explanation of the concepts of relevant terms in the present invention.

[0038] The container refers to a container having an open container neck and a main chamber, such as a packaging bottle, a packaging bag, a packaging can, a packaging cup, a packaging box or a packaging barrel.

[0039] The packaging container refers to a container composition formed by installing a container closing device on the container neck. The main chamber of the container can hold materials, and the container closing device can hold additional materials, and the two materials are independent of each other.

[0040] For the concepts of "head end" and "tail end" in the present invention, for the container closing device and each structure of the present invention, their head end refers to the end closest to the bottom of the container when the container closing device is installed on the container neck, and the other end is called the tail end.

[0041] Similarly, for the concepts of "head end" and "tail end" in the present invention, for the sharp structure and the second positioning and stopping buckle provided on the container neck of the present invention, their tail end refers to the end closest to the opening of the container, and the other end is called the head end.

[0042] The "snap, positioning and stopping buckle, support and pressing structure" etc. in the present invention are functional structures in the form of ribs, rib plates, sheet structures, circular sheet structures or arc-shaped sheet structures, or structures formed by combining these forms;

[0043] The "structure" in the present invention refers to the component or the constituent part of the structural unit, or the "structure" characterizes the inherent characteristic form provided on the component or the structural unit;

[0044] For the concepts of "connection" and "linkage" in the present invention, "connection" refers to the structural relationship of mutual association between structures on the same component, or "connection" refers to the meaning of mutual contact, mutual matching and engagement, or matching snap, matching fastening, etc. between different components or parts; "linkage" refers to connecting, fixing and combining together, or forming a whole part by connecting, fixing and combining together.

[0045] As used in the present invention, "joining" means that two components are connected or in contact with each other, and are matched or cooperate with each other.

[0046] When certain structures of the container closure device or container of the present invention are difficult to produce during production, for example, by an injection mold, with low production efficiency and high production cost, or when the injection mold is difficult to achieve its structure, etc., the various structures or settings of the present invention can be obtained by assembling separate parts, snap-connecting, connecting and fixing, or welding. Undoubtedly, the container closure device or container of the present invention obtained by assembling, installing, or fitting in any way belongs to the protection scope of the present invention. For example, the structure on the container neck can be obtained by snap-connecting and fixing the main body member of the separate bottle body and the structural member of the bottle neck.

[0047] Furthermore, the present invention also provides a packaging container, which is composed of the container closure device of the present invention installed on the container neck with an opening. The container has an opening container neck and a main body chamber, and a second snap that can be connected and fixed to the container closure device is provided on the outer wall of the container neck. A sharp structure is provided on the inner wall of the container neck, and a second positioning stop buckle is provided on the inner wall or outer wall of the container neck. The container closure device is installed and fixed on the container neck by snapping the first snap of the container closure device with the second snap of the container neck. As described above, the container closure device is installed on the neck of the container to form a packaging container. Before opening the packaging container, by screwing the container closure device, relative rotation occurs between the container closure device and the container neck, so that the sharp structure cuts the sealing piece on the cavity tube structure, and finally the material in the container closure device is released from sealing, storage to release and preparation. The mixed material is finally discharged through the cavity tube structure and the channel structure provided at its tail end to achieve the purpose of using the mixed material. It is convenient and simple to use, and is easy to install, fill with materials, and produce industrially.

[0048] In particular, the container closure device of the present invention and its matching container are a mutually matching packaging combination, having the size of a special or conventional matching container, capable of providing better product functions, experience, appropriate screwing force, and better material capacity, appearance, etc. For example, preferably:

[0049] The inner diameter of the opening of the container neck is 28 mm to 30 mm, and the inner diameter of the cavity tube structure of the container closure device is 20 mm to 25 mm; or,

[0050] The inner diameter of the opening of the container neck is 24.5 mm to 26.5 mm, and the inner diameter of the barrel structure of the container closure device is 20 mm to 25 mm; or,

[0051] The inner diameter of the opening of the container neck is 26.5 mm to 28 mm, and the inner diameter of the barrel structure of the container closure device is 20 mm to 25 mm; or,

[0052] The inner diameter of the opening of the container neck is 24.5 mm to 30 mm, and the inner diameter of the barrel structure of the container closure device is 17 mm to 21.5 mm; or,

[0053] The inner diameter of the opening of the container neck is 32 mm to 35 mm, and the inner diameter of the barrel structure of the container closure device is 25 mm to 31 mm; or,

[0054] The inner diameter of the opening of the container is 52 mm to 54 mm, and the inner diameter of the barrel structure of the container closure device is 45 mm to 52 mm.

[0055] Furthermore, the present invention also provides a packaging composition, which consists of the container closure device, the container, and two kinds of materials described in the present invention. Wherein the container has an opening container neck and a main body chamber, and a second buckle is provided on the outer wall of the container neck, a sharp structure is provided on the inner wall of the container neck, and a second positioning stop buckle is provided on the inner wall or the outer wall of the container neck. The container closure device is installed on the container neck through the second buckle provided on the outer wall of the container neck; one kind of material is accommodated in the main body chamber of the container, and the other kind of material is accommodated in the barrel structure of the container closure device, and the two kinds of materials are separately and independently sealed. Preferably, at least one of the two kinds of materials is a liquid material.

[0056] Preferably, the main body chamber of the container accommodates a liquid material. Preferably, the material accommodated in the container closure device is selected from liquid materials, solid materials, mixtures of solids and liquids, or pastes; the solid materials are preferably solid powder materials, solid particle materials, pill materials, tablet materials, and the solid particle materials include but are not limited to effervescent granules, rapidly disintegrating granules, ordinary granules, lumps, amorphous lumps, etc. applied in pharmacy, and the liquid materials include water-based liquid materials or fat-soluble liquid materials. For example, the water-based liquid materials preferably include water, aqueous solutions or water suspensions of carbohydrates, aqueous solutions or water suspensions of plant extracts, animal milks, water emulsions of animal milk powders, aqueous solutions or water emulsions of plant proteins, etc.

[0057] Further, the present invention provides an assembly method of the container closure device and the container. The assembly method includes:

[0058] S1: Provide the following components, including: a container closure device, a channel seal, and a container having a container neck with an opening;

[0059] S2: Assembly of the container closure device and the container: Fill the material into the barrel structure of the container closure device, seal the channel structure of the container closure device with the channel seal, then place the container closure device at the opening of the container neck, connect the second positioning stop catch of the container neck with the first positioning stop catch of the container closure device, and make the sharp structure of the container neck be in the position opposite to the recess structure of the container closure device. By applying pressure and utilizing the material deformation of the lid surrounding structure of the container closure device, make the first buckle of the container closure device snap together with the second buckle of the container neck, and make the sharp structure of the container neck be in the recess structure of the container closure device, then the container closure device and the container can be assembled together to form a packaging container.

[0060] The main chamber of the container houses the first material, and the container closure device houses the second material. Before installing the container closure device on the neck of the container, fill the first material into the main chamber of the container through the opening of the container.

[0061] Furthermore, by changing the cutting direction of the sharp structure of the container neck when cutting the sealing piece during screwing, and changing the relative position between the supporting and pressing structure and the recess structure and changing the initial connection position of the positioning stop catch, the container closure device of the present invention can change the screwing direction and the screwing release mode. For example, preferably, screwing the container closure device counterclockwise can release the material in the container closure device. If the cutting direction of the sharp structure of the container neck when cutting the sealing piece during screwing is changed, and the relative position between the supporting and pressing structure and the recess structure and the initial connection position of the positioning stop catch are changed, it can be achieved that screwing the container closure device clockwise releases the material.

[0062] Furthermore, the application of the container closure device and its packaging container and packaging composition provided by the present invention in the preparation or packaging and storage of the following products: food or beverage, drinking wine, health food, foods for special medical purposes, drugs, medical devices, sanitary products, cosmetics or daily necessities, especially in the packaging and storage of beverages, drinking wine, health food, foods for special medical purposes, drugs, medical devices, sanitary products, cosmetics or daily necessities containing liquid materials. For example, the container closure device contains liquid materials, or the container closure device contains solid materials, and the main chamber of the container contains liquid materials, etc.

[0063] The container closure device and its packaging container of the present invention have the following innovative features compared with the prior art.

[0064] First, the container closure device of the present invention has only one component, which is simple, convenient to use, and has strong controllability. Only by screwing the container closure device, the independently sealed material in the container closure device can be released into the main chamber of the container. Moreover, after the material is released into the main chamber of the container, the packaging container remains in an overall sealed state, meeting the requirements that the contents still need to be sealed after mixing and further processed, such as shaking evenly, standing still, fermenting, precipitating, short-term storage or continued storage, etc.

[0065] Second, when using the mixture, only the seal of the channel structure at the end of the container closure device needs to be opened, without removing the entire container closure device from the neck of the container, which has the advantages of convenience, hygiene, and avoiding cross-contamination.

[0066] Third, the container closure device of the present invention is exquisitely designed, properly matched, convenient to use, and the release and deployment are scientifically reasonable, reliable, stable, simple to operate, and accurate to control. When rotation occurs between the container closure device and the container neck to reach a predetermined position, the positioning stop latches engage with each other to prevent rotation, ensuring that the sealing piece is opened at a predetermined opening size, and having accurate and stable operability and controllability for the release of the material at the accurate position and the control of the opening size of the sealing piece during the release of the material.

[0067] Fourth, the sealing performance of the container closure device of the present invention is well-controlled and stable. The container closure device rotates horizontally with the container neck, and there is no longitudinal displacement between the container closure device and the container neck, which can ensure the sealing state between the container closure device and the container neck. Moreover, when the material in the bottle is mixed evenly by shaking the bottle body, the material in the bottle will not spill out of the bottle mouth, having good use operation, manual control feeling and experience.

[0068] Fifth, the container closure device of the present invention is exquisitely designed and has only one component. The sealing performance of the container is only determined by the sealing link between the container closure device and the container neck, which is also the only control link for the sealing performance of the container, being very conducive to the control of the sealing performance of the container, and also beneficial to the production, use conditions, qualified rate, industrial production and commercial application of the container closure device.

[0069] Sixth, the container closure device rotates horizontally with the container neck, and there is no longitudinal displacement between the container closure device and the container neck, which can ensure that the sealing performance between the container closure device and the container remains good and stable; the appearance shapes of the container closure device and the container will not change before and after use, and the aesthetic appearance between the container closure device and the container will not be damaged.

[0070] Point 7: Easy for large-scale industrial production. The container closing device has only one component, with a simple composition. The snap structure is easy to assemble with the container, and the material filling operation is simple, facilitating the realization of large-scale industrial production. During assembly, no large pressing force is required, avoiding the occurrence of material spillage caused by vibration generated by a large pressing force; moreover, the components after installation are tight and stable.

[0071] Point 8: An anti-theft ring structure is provided at the head end of the cover perimeter structure, enabling the container closing device to have an anti-theft function during the use of commercial products and also preventing the accidental rotation of the container closing device.

[0072] Point 9: The innovative functional structure of the container closing device of the present invention can meet the sealed storage and release of various forms of materials such as solid powders or granules, liquids, amorphous lumps, high-viscosity liquids, soft sticky states, pastes, or viscous substances; users can also intuitively feel the different properties of the product materials before and after mixing. Brief Description of the Drawings

[0073] Figures 1 to 5 is a schematic structural diagram of the container closing device and its packaging container in Embodiment 1 of the present invention, where:

[0074] Figure 1 and Figure 2 are schematic structural diagrams of the container closing device, the container, and the screw cap, which are views from two different directions respectively;

[0075] Figure 3 are views of the container closing device from two different directions respectively;

[0076] Figure 4 are views of the container from two different directions respectively;

[0077] Figure 5 is a cross-sectional structural diagram of the container closing device assembled with the container and the screw cap, where the container closing device is in a sealed state;

[0078] Figures 6 to 7 is a schematic structural diagram of the container closing device and the container in Embodiment 2 of the present invention, where:

[0079] Figure 6 is a schematic structural diagram of the container closing device;

[0080] Figure 7 are views of the container from two different directions respectively;

[0081] Figures 8 to 9 is a schematic structural diagram of the container closing device and the container in Embodiment 3 of the present invention, which are views from two different directions respectively.

[0082] Figure numerals: 1. container closure device; 101. cover surrounding structure; 102. cavity structure; 103. first buckle; 104. first positioning stop buckle; 105. sealing sheet; 106. recessed chamber structure; 107. supporting and pressing structure; 108. thinning connection structure; 109. reserved gap; 110. channel structure; 111. thread of channel structure; 112. close-fitting closed structure; 113. anti-theft ring; 114. first serrated rib; 115. bridge connection; 116. notch;

[0083] 2. Container; 201. Container neck; 202. Main body chamber; 203. Second buckle; 204. Sharp structure; 205. Second positioning stop buckle; 206. Second serrated rib;

[0084] 3. Threaded cap;

[0085] 4. First material; 5. Second material. DETAILED DESCRIPTION

[0086] In the implementation process of the present invention, various embodiments and modifications produced by ordinary technicians in this field without departing from the scope and spirit of the present invention are obvious and easy to carry out. The present invention is further described below through the specific examples of the accompanying drawings, but it does not limit the present invention.

[0087] In addition, the technical solution of the present invention, including the preferred technical solution, is further described in detail by means of the accompanying drawings and by listing some optional embodiments of the present invention. It should be noted that any technical feature and any technical solution in the present embodiment are one or more of a variety of optional technical features or optional technical solutions. In order to describe the need for brevity, this document cannot exhaustively list all the alternative technical features and alternative technical solutions of the present invention, nor is it convenient for each implementation method of the technical feature to emphasize that it is one of the multiple optional implementation methods. Therefore, those skilled in the art should know that any technical feature and any technical solution in the present embodiment do not limit the scope of protection of the present invention, and the scope of protection of the present invention should include any alternative technical solutions that can be thought of by those skilled in the art without creative work.

[0088] Embodiment 1. A container closure device and a packaging container thereof.

[0089] refer to Figures 1 to 5 As shown, the container closure device 1 provided in this embodiment, as well as the container 2 and the threaded cover 3, the threaded cover 3 is used as a channel sealing member of the channel structure 110; Figure 5 This is a cross-sectional structural diagram of the container closure device 1 of this embodiment assembled with the container 2 and the threaded cap 3, wherein the container closure device 1 is in a sealed state.

[0090] The container closing device 1 has a lid surrounding structure 101 and a barrel structure 102. The lid surrounding structure 101 and the barrel structure 102 are connected together to form an annular barrel structure. A first buckle 103 is provided on the inner wall of the lid surrounding structure 101, and a first positioning stop buckle 104 is provided on the outer wall of the barrel structure 102. The internal space of the barrel structure 102 can accommodate materials. A sealing piece 105 is provided at the head end of the barrel structure 102. A recess structure 106 and a supporting and pressing structure 107 are provided on the outer wall of the sealing piece 105. The recess structure 106 recesses from the outer wall of the sealing piece 105 and protrudes from the inner wall of the sealing piece 105. The supporting and pressing structure 107 is provided in the recess structure 106 and is in a convex structure;

[0091] At the connecting part between the sealing piece 105 and the inner wall of the head end of the barrel structure 102, a structure with an inclined surface is provided to reduce its thickness, and then it is connected to the inner wall of the head end of the barrel structure 102 to form a thinning connection structure 108 between the sealing piece 105 and the barrel structure 102. The thickness of the sealing piece 105 is 0.55 mm to 1.2 mm, preferably 0.75 mm to 0.9 mm. The thickness at the connection between the sealing piece 105 and the inner wall of the head end of the barrel structure 102 is 0.08 mm to 0.35 mm, preferably 0.10 mm to 0.3 mm, and most preferably 0.15 mm to 0.25 mm; for example, preferably 0.12 mm, 0.13 mm, 0.17 mm, 0.19 mm, 0.2 mm, 0.22 mm, 0.23 mm, 0.25 mm, 0.28 mm or 0.3 mm;

[0092] A channel structure 110 is provided at the tail end of the barrel structure 102. The channel structure 110 has an opening and is communicated with the internal space of the barrel structure 102. A thread 111 of the channel structure is provided on the outer wall of the channel structure 110. A threaded cap 3 is installed on the channel structure 110 to seal the channel structure 110;

[0093] Furthermore, as Figure 2 、 Figure 3 shown, the wall body part of the barrel structure 102 connected to the recess structure 106 is in a structure that protrudes from the inner wall to the outer wall, and a reserved gap 109 is formed between the supporting and pressing structure 107 and the inner wall of the barrel structure 102;

[0094] Furthermore, as Figure 2 、 Figure 3 shown, the inner wall diameter of the barrel structure part at the head end of the barrel structure 102 where the sealing piece 105 is connected is smaller than the inner wall diameter of the barrel structure of other parts of the barrel structure 102;

[0095] Further, a tight - fitting sealing structure 112 is provided on the outer wall of the barrel structure 102. The tight - fitting sealing structure 112 can be in close contact with the inner wall of the container neck 201 to achieve a sealing effect, and maintain the sealing effect when the container closing device 1 and the container neck 201 rotate relative to each other.

[0096] Further, an anti - theft ring 113 is provided at the head end of the cover perimeter structure 101. The anti - theft ring 113 and the cover perimeter structure 101 are connected together by a bridge connection 115. First serrated ribs 114 are provided on the inner wall of the anti - theft ring 113.

[0097] The container 2 has an open container neck 201 and a main chamber 202. A second buckle 203 is provided on the outer wall of the container neck 201, sharp - shaped structures 204 and a second positioning stop catch 205 are provided on the inner wall of the container neck 201, and second serrated ribs 206 are also provided on the outer wall of the container neck 201.

[0098] In this embodiment, the container closing device 1 and the container 2 are assembled together to form a packaged container.

[0099] The assembly method of the container closing device 1 and the container 2 includes: filling the second material 5 into the barrel structure 102 of the container closing device 1, using the screw cap 3 to seal the channel structure 110 of the container closing device 1, then placing the container closing device 1 at the opening of the container neck 201, connecting the second positioning stop catch 205 of the container neck 201 with the first positioning stop catch 104 of the container closing device 1. At this time, the sharp - shaped structure 204 of the container neck 201 is in the position opposite to the recessed structure 106 of the container closing device 1. By applying pressure and using the material deformation of the cover perimeter structure 101 of the container closing device 1, the first buckle 103 of the container closing device 1 is buckled with the second buckle 203 of the container neck 201, and the sharp - shaped structure 204 of the container neck 201 is placed in the recessed structure 106 of the container closing device 1, then the container closing device 1 and the container 2 can be assembled together, the container closing device 1 is installed and fixed on the neck of the container 2, and the tight - fitting sealing structure 112 is in close contact with the inner wall of the container neck 201 to achieve a sealing effect, sealing the opening of the container neck 201 to form a packaged container; and the first serrated ribs 114 on the inner wall of the anti - theft ring 113 of the container closing device 1 are connected to the second serrated ribs 206 provided on the outer wall of the container neck 201.

[0100] The main chamber 202 of the container 2 accommodates the first material 4, and the container closing device 1 accommodates the second material 5. Before installing the container closing device 1 on the container neck 201, the first material 4 is filled into the main chamber 202 of the container through the opening of the container 2.

[0101] Functions and structural roles of the container closing device and its packaging container in this embodiment:

[0102] The first positioning and stopping catch 104 of the container closing device 1 is connected to the second positioning and stopping catch 205 of the container neck 201, playing a positioning role. It enables the container closing device 1 and the container neck 201 to be assembled at a preset position, ensuring that the sharp structure 204 of the container neck 201 is located in the recess structure 106 of the container closing device 1, preventing the sharp structure 204 from accidentally puncturing the sealing sheet 105, and ensuring that the container closing device 1 and the container neck 201 are in a relatively stable position during and after assembly. The first catch 103 of the container closing device 1 and the second catch 203 of the container neck 201 are connected and latched together, thus assembling the container closing device 1 with the container 2. And the container closing device 1 and the container neck 201 can rotate relative to each other, but cannot be disassembled from the container neck 201;

[0103] During use, due to the mutual connection and stopping effect of the first positioning and stopping catch 104 and the second positioning and stopping catch 205 in the initial position, the container closing device 1 and the container neck 201 can only rotate relative to each other in one direction. As shown in the figure, the container closing device 1 rotates counterclockwise. Under the interaction of the first serrated rib 114 and the second serrated rib 206, the bridge connection 115 between the anti-theft ring 113 structure and the lid perimeter structure 101 breaks, making the container closing device 1 play an anti-theft role;

[0104] Further, by rotating the container closing device 1 counterclockwise to interactively rotate with the container neck 201, the sharp structure 204 of the container neck 201 starts to slide out of the recessed structure 106 of the container closing device 1, and the sharp structure 204 can cut through the thinning connection structure 108 of the sealing sheet 105. When cutting through to a predetermined position, the first positioning stop catch 104 engages with the second positioning stop catch 205 again to prevent rotation between the container closing device 1 and the container neck 201. At this time, the sharp structure 204 and the pressing structure 107 on the sealing sheet 105 also engage with each other and generate a mutual lateral pushing force. As shown in the position and form of the pressing structure 107, the inner side of the sharp structure 204 engages with the pressing structure 107, and the incision between the sealing sheet 105 and the inner wall of the barrel structure 102 is pushed open. At this time, the part of the sealing sheet 105 that is not cut and still connected to the inner wall of the barrel structure 102, that is, the sealing sheet part at the recessed structure 106, is still connected to the inner wall of the barrel structure 102, making the part of the sealing sheet 105 at the recessed structure 106 the fixed part, and pushing the incision of the sealing sheet 105 towards the inside of the barrel structure 102. Since the inner wall diameter of the barrel structure of the first end connecting the sealing sheet 105 part of the barrel structure 102 is smaller than the inner wall diameter of the barrel structure of other parts of the barrel structure 102, a larger spacing can be generated between the incision of the sealing sheet 105 and the inner wall of the barrel structure 102, forming a larger material outlet;

[0105] Moreover, due to the existence of the reserved gap 109, a greater lever moment is generated when the sharp structure 204 engages with the pressing structure 107, making it more conducive to pushing the incision of the sealing sheet 105 towards the inside of the barrel structure 102, and the process of pushing the sealing sheet 105 towards the barrel structure 102 will be greater, so that a larger material outlet can be formed, ensuring and facilitating the release of the second material 5 into the container 2 and mixing it with the first material 4 in the container 2 to achieve the functions of mixing and blending. Moreover, after the second material 5 is released into the main chamber 202 of the container 2, the packaging container is still in an overall sealed state. When the mixed material needs to be used, only the threaded cap 3 at the tail end of the barrel structure 102 needs to be opened, and the mixed material can finally be discharged through the channel structure 110 of the container closing device 1 to achieve the purpose of using the mixed material.

[0106] Example 2. A container closing device and its packaging container.

[0107] Reference Figures 6 to 7 As shown, the container closing device 1 provided in this example, as well as the container 2 and the threaded cap 3. Different from Example 1, the first positioning stop catch 104 of the container closing device 1 in this example is arranged on the inner wall of the lid perimeter structure 101, and the second positioning stop catch 205 is arranged on the outer wall of the container neck. Specifically:

[0108] The container 2 has an open container neck 201 and a main body chamber 202. A second buckle 203 and a second positioning stop catch 205 are provided on the outer wall of the container neck 201, and a sharp structure 204 is provided on the inner wall of the container neck 201;

[0109] The container closure device 1 has a cover perimeter structure 101 and a barrel structure 102. The cover perimeter structure 101 and the barrel structure 102 are connected together to form an annular barrel structure. A first buckle 103 and a first positioning stop catch 104 are provided on the inner wall of the cover perimeter structure 101. The internal space of the barrel structure 102 can accommodate materials. A sealing piece 105 is provided at the head end of the barrel structure 102. A recess structure 106 and a pressing structure 107 are provided on the outer wall of the sealing piece 105. The recess structure 106 recesses from the outer wall of the sealing piece 105 and protrudes from the inner wall of the sealing piece 105. The pressing structure 107 is provided in the recess structure 106 and is in a convex structure. In addition, a notch 116 is provided on the first buckle 103, and the notch 116 is located adjacent to the first positioning stop catch 104;

[0110] Other structures of the container closure device 1 in this embodiment are the same as those described in Embodiment 1. By borrowing and referring to the description in Embodiment 1, it can be implemented.

[0111] A notch 116 is provided on the first buckle 103 to facilitate the insertion of the second positioning stop catch 205 from the notch 116 when the container closure device 1 and the container 2 are assembled, so that the second positioning stop catch 205 and the first positioning stop catch 104 can find the correct position for connection.

[0112] In this embodiment, the container closure device 1 and the container 2 are assembled together to form a packaging container.

[0113] The assembling method of the container closing device 1 and the container 2 includes: filling the second material 5 into the barrel structure 102 of the container closing device 1, sealing the channel structure 110 of the container closing device 1 with the screw cap 3, then placing the container closing device 1 at the opening of the container neck 201, so that the second positioning stop catch 205 of the container neck 201 extends into the notch 116, thereby connecting the second positioning stop catch 205 with the first positioning stop catch 104. At this time, the sharp structure 204 of the container neck 201 is in the facing position of the recess structure 106 of the container closing device 1. By applying pressure and using the material deformation of the lid surrounding structure 101 of the container closing device 1, the first buckle 103 of the container closing device 1 is buckled together with the second buckle 203 of the container neck 201, and the sharp structure 204 of the container neck 201 is placed in the recess structure 106 of the container closing device 1, then the container closing device 1 can be assembled with the container 2, the container closing device 1 is installed and fixed on the neck of the container 2, and the tight contact between the tight sealing structure 112 and the inner wall of the container neck 201 realizes the sealing function, seals the opening of the container neck 201, and forms a packaging container;

[0114] The main chamber 202 of the container 2 contains the first material 4, and the container closing device 1 contains the second material 5. Before installing the container closing device 1 on the container neck 201, the first material 4 is filled into the main chamber 202 of the container through the opening of the container 2.

[0115] The functions and structural effects of the container closing device and its packaging container in this embodiment are the same as those described in Embodiment 1. By borrowing and referring to the description in Embodiment 1, it can be implemented.

[0116] Embodiment 3. A container closing device and its packaging container.

[0117] Reference Figure 8 、 Figure 9 As shown in the figure, the container closing device 1 provided in this embodiment is different from that in Embodiment 1 in that the position and the set form of the supporting and pressing structure 107 provided on the outer wall of the sealing piece 105 are different; other structures of the container closing device 1 are the same as those in Embodiment 1. The supporting and pressing structure 107 provided in this embodiment, when in use, will make the wall body at the tail end of the sharp structure engage with the supporting and pressing structure 107, generating an extrusion force on the supporting and pressing structure 107, and the direction of this extrusion force is towards the inside of the barrel structure 102, so that the cut of the sealing piece 105 is pushed towards the inside of the barrel structure 102.

[0118] The functions and structural effects of the container closing device and its packaging container in this embodiment are the same as those described in Embodiment 1. By borrowing and referring to the description in Embodiment 1, it can be implemented.

[0119] Example 4. For the container closing device 1 and its packaging container in the foregoing Example 1, the inner diameter of the opening of the container neck 201 is 29 mm, and the inner diameter of the tail end of the barrel structure is 25 mm. When the container closing device 1 in Example 1 is produced using an injection mold, the injection gate is arranged at the central position of the inner wall of the sealing piece 105 of the barrel structure 102.

[0120] Test on the influence of the setting position of the injection gate on the product qualification rate of the container closing device 1.

[0121] Test method: (1) Set the injection gate of the mold at the central position of the inner wall of the sealing piece 105, and the container closing device obtained by injection molding is designated as product A. Set the injection gate of the mold on the outer wall of the lid surrounding structure 101, and the container closing device obtained by injection molding is designated as product B. Product A and product B are completely the same in terms of size, shape, structural form, dimensions, number of mold cavities, etc. The thickness at the connection between the sealing piece 105 and the head end of the barrel structure 102 is 0.23 mm ± 0.015 mm.

[0122] (2) Product A and product B use the same high-density polyethylene material and the same injection temperature, injection pressure, injection time, holding pressure time, etc., and 6000 products A and 6000 products B are produced respectively. The two injection-molded products are complete in structure, without missing glue or flash.

[0123] (3) Randomly take 500 products A and 500 products B respectively, and conduct product sealing tests on the key sealing structure where the inner wall between the sealing piece and the head end of the barrel structure is thinned to determine the product qualification rate.

[0124] (4) Test method: Use a leakage and sealing strength tester to test. Pressurize from the tail end opening of the container closing device to 200 KPa and hold the pressure underwater for 1 min to observe whether there is air leakage.

[0125] Test results: For 500 products A, the number of air leakage is 0, and the sealing qualification rate is 100%. For 500 products B, the number of air leakage is 239, and the sealing qualification rate is 52.2%.

[0126] It can be seen that the injection gate of product A is set at the central position of the inner wall of the sealing piece 105, and the sealing qualification rate of its products reaches 100%, showing a very significant difference in the sealing qualification rate of the products compared with setting the injection gate on the outer wall of the lid surrounding structure 101.

[0127] Example 5. A packaging composition containing two independently sealed materials.

[0128] A packaging composition, which is composed of a container closing device, a container, a first material 4, and a second material 5. The container has an open container neck and a main body chamber, and a second buckle is provided on the outer wall of the container neck, a sharp structure is provided on the inner wall of the container neck, and a second positioning stop buckle is provided on the inner wall or the outer wall of the container neck. The container closing device adopts the container closing device described in any one of Embodiment 1 or Embodiment 2. The container closing device is installed on the neck of the container to close the opening of the container, so that the packaging container is in a sealed state;

[0129] The first material 4 is in the main body chamber of the container, and the second material 5 is in the container closing device;

[0130] Wherein at least one of the first material 4 and the second material 5 is a liquid material. Preferably, both the first material 4 and the second material 5 are liquids, or the first material 4 is a liquid material and the second material 5 is a solid material, or the first material 4 is a solid material and the second material 5 is a liquid material.

[0131] Example 6. Application.

[0132] Use of any of the container closing devices, packaging containers or packaging compositions described in Embodiment 1, Embodiment 2 or Embodiment 6 in the preparation or packaging and storage of the following products: foods, beverages, drinking wines, health foods, foods for special medical purposes, ordinary foods, drugs, medical devices, hygiene products, cosmetics or daily necessities containing liquid components.

[0133] It should be understood that, as used herein, unless the context clearly supports an exception, the singular form "a" is also intended to include the plural form. It should also be understood that "and / or" as used herein means any and all possible combinations of one or more of the associated listed items. The serial numbers of the disclosed embodiments of the present invention above are only for description and do not represent the advantages or disadvantages of the embodiments.

[0134] Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope (including the claims) of the disclosure of the embodiments of the present invention is limited to these examples; under the idea of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other variations in different aspects of the embodiments of the present invention as above, which are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention shall be included in the protection scope of the embodiments of the present invention.

Claims

1. A container closing device that can be fixed to the neck of a container, characterized in that: The container closing device has a lid perimeter structure and a barrel structure, and the lid perimeter structure and the barrel structure are connected together to form an annular barrel structure; On the inner wall of the lid perimeter structure, a first buckle is provided. At the head end of the barrel structure, a sealing piece is provided. On the outer wall of the sealing piece, a recess structure and a supporting and pressing structure are provided. The recess structure indents from the outer wall of the sealing piece and protrudes from the inner wall of the sealing piece. The supporting and pressing structure is a convex structure on the outer wall of the sealing piece; At the connecting part between the sealing piece and the inner wall of the head end of the barrel structure, a structure with an inclined surface is provided to reduce its thickness, and then it is connected to the inner wall of the head end of the barrel structure to form a thinning connection structure; At the tail end of the barrel structure, a channel structure is provided. The channel structure has an opening or is in an open shape, and the channel structure communicates with the internal space of the barrel structure; The container has an open container neck and a main body chamber. On the outer wall of the container neck, a second buckle is provided. On the inner wall of the container neck, a sharp structure is provided; On the outer wall of the barrel structure, a first positioning and stopping buckle is provided. On the inner wall of the container neck, a second positioning and stopping buckle is provided. Or, on the inner wall of the lid perimeter structure, a first positioning and stopping buckle is provided. On the outer wall of the container neck, a second positioning and stopping buckle is provided; The first positioning and stopping buckle and the second positioning and stopping buckle can be engaged with each other; The container closing device can be installed on the container neck by the first buckle and the second buckle on the container neck being buckled together. The sharp structure provided on the container neck is located in the recess structure of the container closing device; The container closing device and the container neck can rotate relative to each other.

2. A container closing device that can be fixed to the neck of a container according to claim 1, characterized in that: When the container closing device and the container neck rotate relative to each other, the sharp structure slides out of the recess structure. The sharp structure can cut through the thinning connection structure between the sealing piece and the inner wall of the barrel structure. When it cuts through to a predetermined position, the first positioning and stopping buckle and the second positioning and stopping buckle can be engaged to prevent the container closing device and the container neck from rotating relative to each other; The sharp structure can be engaged with the supporting and pressing structure so that the sharp structure generates a lateral pushing force or a squeezing force on the supporting and pressing structure, and the cut between the sealing piece and the inner wall of the barrel structure is pushed open.

3. A container closing device that can be fixed to the neck of a container according to claim 1, characterized in that: The container closing device is prepared by injection molding with a mold. The injection gate of the container closing device is arranged at the center position of the inner wall or the outer wall of the sealing piece of the barrel structure; The thickness of the sealing piece is 0.55 mm to 1.2 mm; The thickness at the connection between the sealing piece and the head end of the barrel structure is 0.06 mm to 0.45 mm.

4. A container closing device that can be fixed to the neck of a container according to claim 1, characterized in that: For the barrel structure at the part where the head end of the barrel structure is connected to the sealing piece, the inner wall diameter is smaller than the inner wall diameters of the other parts of the barrel structure.

5. A container closing device that can be fixed to the neck of a container according to claim 1, characterized in that: The supporting and pressing structure is arranged in the recess structure and is a convex structure; For the wall part of the barrel structure connected to the recess structure, it presents a structure protruding from the inner wall to the outer wall, and a reserved gap is formed between the supporting and pressing structure and the inner wall of the barrel structure.

6. A container closing device that can be fixed to the neck of a container according to claim 1, characterized in that: A recess structure, a support and pressure structure, and a first positioning and stopping catch are provided on the container closing device; Alternatively, two recess structures, two support and pressure structures, and two first positioning and stopping catches are provided on the container closing device, wherein: The two recess structures are distributed at symmetrical positions on the sealing sheet, and the two support and pressure structures are distributed at symmetrical positions on the sealing sheet; When the second positioning and stopping catch is provided on the inner wall of the container neck, the two first positioning and stopping catches are distributed at symmetrical positions on the outer wall of the barrel structure; when the second positioning and stopping catch is provided on the outer wall of the container neck, the two first positioning and stopping catches are distributed at symmetrical positions on the inner wall of the cover surrounding structure.

7. A container closing device that can be fixed to the neck of a container according to claim 1, characterized in that: A tight sealing structure capable of making the barrel structure airtight with the inner wall of the container neck is provided on the outer wall of the barrel structure; An anti-theft ring structure is provided at the head end of the cover surrounding structure. The anti-theft ring structure is connected by a bridge or a contact with the cover surrounding structure, and serrated ribs are provided on the inner wall of the anti-theft ring structure.

8. A packaging container, characterized in that: The packaging container is composed of the container closing device described in claim 1 and a container. The container has an open container neck and a main body chamber. A second buckle capable of being connected and fixed to the container closing device is provided on the outer wall of the container neck, and a sharp structure is provided on the inner wall of the container neck; The container closing device is installed and fixed on the container neck by buckling the first buckle of the container closing device with the second buckle of the container neck.

9. A packaging composition, characterized in that: The packaging composition is composed of two materials, the container closing device described in claim 1, and a container; The container has an open container neck and a main body chamber. A second buckle is provided on the outer wall of the container neck, and a sharp structure is provided on the inner wall of the container neck; The container closing device is installed on the container neck by buckling the first buckle of the container closing device with the second buckle of the container neck. The sharp structure provided on the container neck is located in the recess structure of the container closing device; One material is accommodated in the main body chamber of the container, and another material is accommodated in the barrel structure of the container closing device.

10. A method for assembling a packaging container according to claim 8 or a packaging composition according to claim 9, characterized in that: The assembling method includes: S1: Providing the following components, including: a container closing device, a channel seal, and a container having an open container neck; S2: Assembling the container closing device and the container: filling the material into the barrel structure of the container closing device, sealing the channel structure of the container closing device with a channel seal, then placing the container closing device at the opening of the container neck, connecting the second positioning and stopping catch of the container neck with the first positioning and stopping catch of the container closing device, and making the sharp structure of the container neck be in the facing position of the recess structure of the container closing device. By applying pressure and using the material deformation of the cover surrounding structure of the container closing device, the first buckle of the container closing device is buckled with the second buckle of the container neck, and the sharp structure of the container neck is located in the recess structure of the container closing device; The main chamber of the container houses the first material, and the container closing device houses the second material. Before installing the container closing device on the neck of the container, the first material is filled into the main chamber of the container through the opening of the container.

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