Container sealing device and component thereof, packaging container and application

Abstract

The invention relates to the technical field of packaging containers of products, and provides a container sealing device which comprises a container sealing device body formed by assembling an inner cover and a control cover, the inner cover is provided with a cover surrounding structure and a barrel surrounding structure which are of an annular barrel-shaped structure and connected together, the cover surrounding structure is provided with a first buckle, and a sealing piece is arranged at the head end of the barrel surrounding structure; a concave chamber structure and a supporting and pressing structure are arranged on the inner wall of the sealing piece; the tail end of the control cover is closed or is provided with a channel structure, the inner wall of the side wall of the control cover is provided with a second buckle, the inner wall of the tail end of the control cover is provided with a cavity cylinder or an arc-sheet-shaped structure, and the cavity cylinder or the arc-sheet-shaped structure is provided with a sharp structure and a rib sheet; the sharp structure is located in the concave chamber structure of the barrel surrounding structure, and the sharp structure can slide, cut, support and press from the concave chamber structure of the inner cover to open the sealing piece, so that materials in the container sealing device are released. In addition, the invention further provides a component of the container sealing device, a packaging container and application.

Description

Technical Field

[0001] The present invention relates to the technical field of product packaging containers, and in particular to a container closing device and components thereof, a packaging container and applications. Background Art

[0002] In many applications such as mixed packaging of different materials, it is necessary to release each material into another shortly before the mixture of various materials is used. It is usually impossible or undesirable to store products in a pre-mixed form because when the products are stored as a mixture for a period of time, they may react with each other undesirably or cause the quality of the mixture to deteriorate. Common examples are, for example, two or more pharmaceutical components, which have better stability and longer shelf life when not mixed than when mixed.

[0003] Of course, it can also be applied to other mixtures of liquids and solids, liquids and liquids, such as water, alcoholic beverages, other beverages, other solvents or solutions, and oily liquids, etc. For mixed liquid products, such as beverages, liquid medicines, homogenized meals of special medical formula foods, liquid cosmetics, liquid reagents and other products, during the shelf life of the product, two or more different materials in the product need to be stored separately to make it more conducive to the stability, freshness, functional assurance or other quality improvements of the product. The existing technical solutions use two or more different packaging bottles / bags / boxes for independent packaging, and reassemble them for use when in use, which is easy to cause many unfavorable factors such as inconvenience in carrying, inconvenience in use, and easy to cause secondary pollution.

[0004] International patent application WO2010 / 101389 discloses a container cover composed of an inner cover and an outer cover, wherein the inner cover and the outer cover are assembled together by means of threads between the inner cover and the outer cover, so that the material is sealed in the container cover, and the container cover is installed at the bottleneck; when in use, the container cover is opened in stages to release the material in the container cover into the bottle body. However, this prior art solution has at least the following disadvantages: (1) When using the mixture in the container, the entire container closure device needs to be removed from the neck of the container, which is not conducive to repeated use of the packaging container after rotating and unsealing, and also exposes the inner core structure of the container closure device to the outside of the container, which is easy to cause cross-contamination or accidental contamination of the mixture in the container.

[0005] (2) During use, the final mixing of the materials is defective. After the materials in the container cap are released into the bottle body, the inner cap and the outer cap can be separated from the bottle body. At this time, the materials in the bottle body have not been completely mixed. If the materials are mixed evenly by shaking the bottle body, the materials will overflow from the bottle mouth, which is not conducive to the convenient use of consumers. The final mixing of the materials has a major defect.

[0006] (3) The accuracy and safety of the container closure device are poor. When opening the container cover, the sealing force between the outer cover and the inner cover must be overcome, and the skirt structure of the outer cover must also be overcome. At this time, a large force must be maintained between the inner cover and the bottleneck so that the inner cover and the bottleneck are relatively fixed and cannot rotate. This is not easy for the user to operate manually, and will result in the entire container cover being separated from the bottleneck of the container, while the material in the container cover has not been released. The accuracy and safety of the container cover are poor. Summary of the invention

[0007] In order to overcome the shortcomings of the prior art, the present invention provides a container closure device, which has the material storage and release functions of sealing, storing and releasing materials. The container closure device can be installed at the opening of the container neck to seal the container to form a packaging container. Before opening the packaging container, the user performs a screwing operation to cut the sealing structure so that the material sealed and stored in the container closure device is mixed and blended with the material in the container. The present invention also provides the component parts of the container closure device, the packaging container, and the packaging composition and application including the closure device.

[0008] The container of the present invention includes but is not limited to a container having an open container neck and a main body chamber, such as a packaging bottle, a packaging bag, a packaging can, a packaging cup, a packaging box or a packaging barrel, etc., preferably a conventional beverage bottle available on the market, such as a conventional standard 30-mouth or 38-mouth plastic bottle, such as a PET, PP or PE plastic bottle.

[0009] Specifically, the present invention adopts the following technical solutions.

[0010] A container closure device comprises an inner cover and a control cover, wherein: The container has an open container neck and a main body chamber, and a thread or a blocking structure is arranged on the outer wall of the container neck; The inner cover has a cover surrounding structure and a tube surrounding structure, the cover surrounding structure and the tube surrounding structure are connected together to form a ring-shaped structure, a thread or a blocking structure is provided on the inner wall of the cover surrounding structure, and the inner cover is provided with a first buckle and a first positioning stop buckle; The first buckle is arranged at any of the following positions: the outer wall of the cover surrounding structure, the rear end of the cover surrounding structure, or the outer wall of the rear end of the tube surrounding structure; The first positioning stop buckle is arranged at any of the following positions: the tail end of the cover surrounding structure, the outer wall of the cover surrounding structure, or the tail end of the cylinder surrounding structure; The tail end of the cylinder circumference structure is open, and a sealing sheet is provided at the head end of the cylinder circumference structure. A recessed chamber structure and a supporting and pressing structure are provided on the inner wall of the sealing sheet. The recessed chamber structure is recessed from the inner wall of the sealing sheet and protrudes from the outer wall of the sealing sheet. The supporting and pressing structure is a convex structure on the inner wall of the sealing sheet. The portion where the sealing sheet is connected to the inner wall of the head end of the barrel circumference structure is provided with a sloped structure to reduce its thickness, and then connected to the inner wall of the head end of the barrel circumference structure to form a thinned connection structure. With such a structural arrangement, the sealing sheet and the inner wall of the head end of the barrel circumference structure are connected through the thinning structure, which can not only achieve a good sealing effect, but also facilitate smooth cutting; preferably, the thickness of the sealing sheet is 0.55mm~1.2mm, preferably 0.7mm~0.9mm, and the thickness of the sealing sheet at the connection point with the head end of the barrel circumference structure is 0.06mm~0.45mm, preferably 0.08mm~0.35mm, and most preferably 0.12mm~0.3mm.

[0011] The control cover is a cylindrical structure, the rear end of the control cover is provided with a cavity tube or an arc sheet structure, the head end of the cavity tube or the head end of the arc sheet structure is provided with a sharp structure, the inner wall of the head end of the cavity tube or the inner wall of the head end of the arc sheet structure is provided with a rib sheet, and the sharp structure is a spike structure or a sharp structure, so as to facilitate it to cut through the sealing sheet; The control cover is provided with a second buckle and a second positioning stop buckle, the second buckle is provided on the inner wall of the side enclosure of the control cover, and the second positioning stop buckle is provided at any of the following positions: the inner wall of the rear end of the control cover, the inner wall of the side enclosure of the control cover, the outer wall of the rear end of the cavity, or the outer wall of the rear end of the arc sheet structure; The inner cover and the control cover can be assembled together to form a container closing device by mutually engaging the first snap and the second snap, wherein the cavity tube or arc sheet structure of the control cover is inside the cylinder circumferential structure of the inner cover, the first positioning stop buckle of the inner cover and the second positioning stop buckle of the control cover can be connected to each other, and the sharp structure of the control cover is in the recessed chamber structure of the sealing sheet.

[0012] The container closure device can be connected to the container neck through the threads provided on the inner wall of the cover surrounding structure and the threads provided on the outer wall of the container neck, so that the container closure device can be installed on the container neck; or The container closing device can be connected to each other through a blocking structure provided on the inner wall of the cover surrounding structure and a blocking structure provided on the outer wall of the container neck, so that the container closing device can be installed on the container neck; The container closing device is installed at the neck opening of the container to seal the neck opening of the container so as to close the container and form a packaging container.

[0013] The rear end of the control cover is in a closed shape.

[0014] Alternatively, a channel structure is provided at the rear end of the control cover, the channel structure has an opening or is in the shape of an opening, and the channel structure is connected to the internal space of the cavity tube or the internal space formed by the arc sheet structure; Furthermore, 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. After the container closure device of the present invention is installed on the neck of the container to form a packaging container, the channel seal can keep the material or mixed material in the packaging container in a sealed state, and can make the mixed material flow from the main chamber of the container through the channel structure of the control cover. By opening the channel seal, the mixed material can be discharged to the outside of the packaging container without removing the entire container closure device from the neck of the container, so that the mixed material can be used, thereby avoiding cross contamination caused by the inner core structure of the container closure device being exposed to the external environment.

[0015] In an optional embodiment, preferably, a thread or buckle structure is provided on the channel structure of the control cover, and a sealing cover having a thread or buckle structure, such as a threaded cover or an easy-open cover, is installed on the channel structure through the thread or buckle structure, so that the entire packaging container can be sealed; Alternatively, the sealing cover is installed on the channel structure by bonding or welding to achieve a sealing state; Alternatively, the sealing film is installed at the rear end of the channel structure by bonding or welding, and reaches a sealing state; Alternatively, the rubber stopper is installed and sealed on the channel structure, and when necessary, the rubber stopper can be removed, punctured or pierced, for example, for sealing a packaging container for a pharmaceutical injection.

[0016] The structural functions and interactions of the container closure device of the present invention are as follows: the cylinder circumference structure of the inner cover is sleeved on the cavity cylinder of the control cover, or the arc-shaped structure of the control cover is inserted into the cylinder circumference structure of the inner cover, and the first positioning stop buckle of the inner cover is connected with the second positioning stop buckle of the control cover to play a positioning role, so that the inner cover and the control cover can be assembled at a preset position, ensuring that the cavity cylinder or the arc-shaped structure and the cylinder circumference structure are in a stable position during assembly, preventing the sharp structure from accidentally piercing the sealing sheet at the head end of the cylinder circumference structure, and ensuring that the inner cover and the control cover are in a relatively stable position during and after assembly; and making the sharp structure in a position facing the concave chamber structure of the inner cover, using pressure and the deformation of the materials of the control cover and the inner cover, so that the first buckle of the inner cover and the second buckle of the control cover are buckled together, at which time the sharp structure is in the concave chamber structure of the sealing sheet, and the inner cover and the control cover are assembled together to form the container closure device of the present invention; The inner cover and the control cover can rotate relative to each other, and the cavity of the control cover or the cylinder structure of the inner cover can accommodate materials. The difference is that when the control cover is provided with a cavity, the materials are present in the cavity of the control cover, and when the control cover is provided with an arc sheet structure, the materials are present in the cylinder structure of the inner cover; Before assembling the inner cover and the control cover together, the material can be filled into the cavity of the control cover or the cylinder structure of the inner cover. The process of filling and sealing the material is the process of assembling and forming the container closure device. When in use, by twisting the control cover, the sharp structure of the control cover starts to slide from the concave chamber structure of the sealing sheet and cuts the thinned connection structure of the sealing sheet. When the thinned connection structure is cut to a predetermined position, the first positioning stop buckle and the second positioning stop buckle can engage with each other to prevent the inner cover and the control cover from rotating. At the same time, the ribs at the head end of the cavity tube or the ribs at the head end of the arc sheet structure engage with the supporting and pressing structure on the sealing sheet to push open the incision between the sealing sheet and the tube circumference structure, so that the incision is enlarged to form a funnel-shaped material outlet, so that the material contained in the container closure device can be released into the container and mixed with the material in the container, and finally the purpose of sealing, storing and releasing the material in the container closure device is achieved; Furthermore, the mixed material can be used by opening the channel seal on the channel structure or removing the container closure device from the container neck.

[0017] The container closing device described in the present invention has a first positioning stop buckle on the inner cover, a recessed chamber structure and a supporting and pressing structure on the sealing sheet, and correspondingly, a second positioning stop buckle, a sharp structure and a rib sheet are provided on the control cover, and the above structures can match each other, which is conducive to production assembly and a good user experience; such a setting can enable the sealing sheet to form a funnel-shaped material outlet after the sealing sheet is cut, which is conducive to the smooth release of the material.

[0018] Alternatively, in the container closure device described in the present invention, two first positioning stop buckles distributed in symmetrical positions are arranged on the inner cover, two recessed chamber structures distributed in symmetrical positions and two supporting and pressing structures distributed in symmetrical positions are arranged on the sealing sheet, and correspondingly, two second positioning stop buckles distributed in symmetrical positions are arranged on the control cover, two sharp structures distributed in symmetrical positions are arranged on the cavity tube or arc-shaped structure of the control cover, and two ribs distributed in symmetrical positions are arranged on the cavity tube or arc-shaped structure of the control cover; such an arrangement enables the sealing sheet to form two funnel-shaped material outlets after the sealing sheet is cut, which is conducive to the smooth release of the material. The "distributed in symmetrical positions" described in the present invention refers to the structure taking the central axis of the circumferential body structure or circumferential body component in which it is located as the axis of symmetry, and being distributed according to the position arranged by the symmetrical structure or array structure. For example, taking the central axis of the barrel structure of the cover surrounding structure or the barrel surrounding structure of the inner cover as the axis of symmetry, two first positioning stop buckles, two recessed chamber structures and two supporting and pressing structures are set according to the setting method of the symmetrical structure or the array structure. Similarly, taking the central axis of the cylindrical structure of the control cover itself as the axis of symmetry, or taking the central axis of the cavity of the control cover as the axis of symmetry, or taking the central axis of the circumferential body structure where the arc-shaped structure of the control cover is located as the axis of symmetry, two second positioning stop buckles, two sharp structures and two ribs are set according to the setting method of the symmetrical structure or the array structure.

[0019] In addition, by changing the cutting direction of the sharp structure of the control cover when cutting the sealing sheet when the control cover is screwed, and changing the relative position between the supporting and pressing structure and the recessed chamber structure, the container closing device of the present invention can not only realize different screwing release methods, screwing directions, usage methods and usage functions; but also meet various forms of industrial filling, screwing and assembly requirements.

[0020] In the container closure device of the present invention, the cover surrounding structure of the inner cover is located inside the control cover; or, the cover surrounding structure of the inner cover is located below the control cover, so that the control cover and the cover surrounding structure of the inner cover form a two-layer structure. The relative position between the cover surrounding structure of the inner cover and the control cover not only constitutes the appearance of the container closure device, but also affects the use of the container closure device.

[0021] In an optional embodiment, the head end of the cylinder circumference structure of the inner cover is in a high-low staggered structure, wherein the head end of the cylinder circumference structure where the concave chamber structure of the sealing sheet is located is lower than other parts of the head end of the cylinder circumference structure. This arrangement can obtain a larger opening space when the sealing sheet is cut and pressed down to open, which not only enables the material in the cavity to be released quickly, but also meets the requirements of accommodating and releasing larger block materials.

[0022] If the various components, parts, structures or settings of the container closure device described in the present invention need to be sealed or airtight with each other, on the one hand, the sealing or airtightness can be achieved by the close fit between the components or structures, for example, a structure with a tight closing ring is adopted, especially a structure with a tight closing ring is provided on a plastic component to be in close contact with another component, and the elastic deformation of the plastic material and the close fit of the tight closing ring structure are utilized to achieve the sealing or airtightness between the two contacting components or structures; on the other hand, sealing pads or sealing rings made of rubber or elastomeric polymer materials can be used for sealing or airtightness.

[0023] For example, preferably, the inner wall of the cylinder circumference structure of the inner cover and the outer wall of the cavity are in close contact to achieve sealing performance of the material in the cavity; The inner wall of the cylinder circumference structure of the inner cover and the closed ring structure provided on the control cover are in close contact to achieve sealing performance of the material in the cavity or the material in the cylinder circumference structure; Alternatively, a closing ring structure is provided at the tail end of the inner cover's cylinder circumference structure or the tail end of the cover circumference structure, and a closing ring structure is provided on the inner wall of the tail end of the control cover. The closing ring structure is cylindrical, and a sealing effect is achieved through close contact between the walls of the closing rings of the two. The close contact structure can maintain a sealing effect when the inner cover and the control cover rotate.

[0024] For another example, a closing structure capable of sealing the cylindrical structure and the container neck is disposed on the outer wall of the cylindrical structure of the inner cover. The closing structure can be in close contact with the inner wall of the container neck to achieve a sealing effect.

[0025] Description of the concepts of the present invention related terms.

[0026] The container refers to a container having an open container neck and a main body chamber, such as a packaging bottle, a packaging bag, a packaging can, a packaging cup, a packaging box or a packaging barrel.

[0027] The packaging container refers to a container composition formed by installing a container closure device on the neck of the container, wherein the main chamber of the container can contain materials, and the container closure device can contain other materials, and the two materials are independent of each other.

[0028] The arc-shaped sheet structure described in the present invention refers to a sheet structure in the shape of an arc surface, or a part of a cylindrical structure.

[0029] The concepts of "head end" and "tail end" described in the present invention, the container closure device, and various components, structures, parts, devices or settings, etc., their head end refers to the end closest to the bottom of the container when the container closure device is installed on the opening of the container neck, and their other end is called the tail end.

[0030] The head end of the cylindrical structure of the inner cover of the present invention is a high-low staggered structure. The concepts of "high" and "low" describe the relative positions of high and low. When the inner cover is installed on the opening of the container neck, the part closest to the bottom of the container is the low position.

[0031] The buckles, positioning stop buckles, blocking structures, blocking buckle ribs, closing rings, supporting and pressing structures, etc. described in the present invention are functional structures provided by ribs, rib sheets, sheet-like shapes, sheet-like shapes, cylindrical shapes, etc., or are structures formed by a combination of these shapes. For example, it can be understood by those skilled in the art that the "blocking structure" described in the present invention refers to a combination of a buckle structure and a blocking buckle structure, preferably a structural form formed by ribs, rib sheets or convex and concave structures, which have the functions of mutual buckling, joining, connection and blocking; the concepts of "ribs" and "rib sheets" refer to strip-shaped or sheet-shaped structural settings that connect related structures, or strip-shaped or sheet-shaped structural settings attached to related structures, which have certain functions of reinforcing, stabilizing, supporting, connecting or linking related structures or components, and also have the functions of realizing related structural functions, such as saving materials. The "ribs" are structured to form gaps or voids, realize the structure of material flowing through the channel, form convex and concave structures, form buckle structures, and form blocking structures; the structural setting of the "ribs" includes, but is not limited to, convex strip structures, columnar structures, etc., and the structural setting of the "rib sheets" includes, but is not limited to, planar sheet structures, arc sheet structures (arc sheet structures), curved sheet structures, cylindrical, angled sheet structures, etc. The "ribs" and "rib sheets" can be selectively used according to the functions and structural settings of the structures in which they are located or connected to achieve their functions. For example, the planar sheet structure has the functions of connection and fixation, easy movement, space saving, and forming a channel structure for material flow; the cylindrical sheet structure can make the structure have the functions of connection and fixation, easy rotation, and realizing the channel structure, and the angled sheet structure has the functions of strengthening the stability of the structure in which it is located or connected and saving space, etc.

[0032] The concepts of “component”, “part”, “device” and “structure” described in the present invention have related or similar meanings.

[0033] "Component" means a component or constituent unit that constitutes a product; "Part" refers to a unit that can be separated from a product or a component, or a "part" refers to a product unit formed by assembling together; "component" and "part" sometimes have exactly the same concept; "Device" means a product that is assembled from multiple components or parts, or "Device" means a product component that can be installed on a product or component; "Structure" refers to a component part, part or structural unit, or "structure" represents the inherent characteristic form of a component, part or structural unit; The concepts of "connection" and "linking" described in the present invention, "connection" refers to the interrelated structural relationship between structures on the same component, or "connection" refers to the mutual contact, matching engagement, matching snap-fit, matching snap-fit, etc. between different components or parts; "linking" means connecting, fixing and combining together, or forming an integral component by connecting, fixing and combining together.

[0034] The term "joining" as used in the present invention refers to two components or two structures being connected or in contact with each other and matching or cooperating with each other.

[0035] The various components, structures, parts, devices or settings of the container closure device or packaging container described in the present invention can be obtained by assembling, snap-fitting, connecting, fixing, bonding or welding of individual parts, and are preferably assemblies or compositions of the various structures described in the embodiments of the present invention, or assemblies or compositions that can be assembled. Of course, it can be understood by those skilled in the art that when certain parts are produced, such as by injection molds, there are situations of high difficulty, low production efficiency, poor production compatibility with existing parts, high production costs, or injection molds are difficult to achieve their structures, etc., the various structures, components, parts, devices or settings described in the present invention can be obtained by assembling, connecting, fixing or welding individual parts. Undoubtedly, no matter how the container closure device or packaging container and its various components or structures are assembled, installed or assembled, they all fall within the scope of protection described in the present invention; In an optional embodiment, in order to facilitate the assembly of the container closure device and the filling of the material, the control cover can be formed by assembling and fixing the outer cover component and the cavity tube component together.

[0036] It is particularly noted that the container closure device, container and other parts, components, structures, devices or arrangements of the present invention may be made of polymer materials, metals, glass, ceramics, aluminum-plastic composite materials or paper-plastic composite materials, or composite functional materials of the above materials, or the container closure device and its packaging container are assemblies of different parts made of various materials. Preferably, they are made of polymer materials such as plastics, rubber, and plastic materials, or metal materials, or glass and ceramic materials.

[0037] Another aspect of the present invention provides components of a container closure device, namely, an inner cover and a control cover of the container closure device. The inner cover and the control cover of the container closure device have the technical features as described above.

[0038] Preferably, the inner cover and the control cover of the container closure device of the present invention are made of polymer materials such as polyethylene (PE) and polypropylene (PP) through an injection mold. Preferably, the inner cover of the container closure device is made of polymer materials such as polyethylene (PE) through an injection mold, and the control cover is made of polymer materials such as polypropylene (PP) through an injection mold; in particular, when prepared by injection mold, the injection gate of the inner cover is set on the inner wall or outer wall of the sealing sheet, preferably the injection gate of the inner cover is set at the center of the inner wall or the center of the outer wall of the sealing sheet, and most preferably the injection gate of the inner cover is set at the center of the inner wall of the sealing sheet; Based on the structural characteristics of the inner cover of the present invention, the inventors found that when the injection molding process, the thickness of the connection between the sealing sheet and the head end of the barrel circumference structure, the structure size and other factors are the same, the injection molding gate of the inner cover is set at the center of the inner wall of the sealing sheet of the barrel circumference structure or the center of the outer wall. The inner cover obtained by injection molding has a pass rate of 100% for the key sealing structure between the sealing sheet and the inner wall of the head end of the barrel circumference structure connected by thinning. When the injection molding gate of the inner cover is set at other positions, the pass rate of the key sealing structure of the inner cover is lower than 49%.

[0039] Furthermore, the present invention also provides a packaging container, which is composed of the container closure device of the present invention installed on the neck of a container with an opening. 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, the cavity tube or arc sheet structure and the cylinder circumference structure of the inner cover are rotated by rotating the control cover, and the sharp structure cuts the sealing sheet of the cylinder circumference structure, and finally achieves the purpose of sealing, storing and releasing the materials in the container closure device; then, the control cover is further screwed to separate the container closure device from the neck of the container, so that the opening of the container can be opened, or the channel seal can be opened to discharge the mixed materials in the main chamber of the container to achieve the purpose of use. It is convenient and simple to use, and is easy to install industrially, fill materials and produce.

[0040] In particular, the container closure device and the matching container of the present invention are mutually matched packaging combinations, having the size of special or conventional matching containers, and can provide better product functions, experience, material holding capacity, appearance, etc. For example, preferably: The inner diameter of the container opening is 29 mm to 30.5 mm, the outer diameter of the inner cover tube structure is 28 mm to 31 mm, and the outer diameter of the control cover cavity is 25.5 mm to 27 mm; or The inner diameter of the container opening is 24.5 mm to 26 mm, the outer diameter of the inner cover tube structure is 23 mm to 26.5 mm, and the outer diameter of the control cover cavity is 21 mm to 22 mm; or, The inner diameter of the container opening is 21 mm to 22 mm, the outer diameter of the inner cover tube structure is 19 mm to 22.5 mm, and the outer diameter of the control cover cavity is 17 to 18.5 mm; or The inner diameter of the container opening is 43 mm to 44 mm, the outer diameter of the inner cover tube structure is 42 mm to 44.5 mm, and the outer diameter of the control cover cavity is 39 mm to 40.5 mm; or The inner diameter of the container opening is 46mm-48mm, the outer diameter of the cylinder circumference structure of the inner cover is 45mm-48.5mm, and the outer diameter of the cavity of the control cover is 42mm-44mm.

[0041] Furthermore, the present invention also provides a packaging composition, consisting of two materials, the container closure device described in the present invention and a container, wherein the container includes a container neck with an opening and a main chamber, and the container neck is provided with a thread or a blocking structure that can be interconnected with the container closure device; the main chamber of the container contains one material, the container closure device contains another material, and the two materials are independently sealed from each other, preferably at least one of the two materials is a liquid material, and preferably the main chamber of the container contains a liquid material.

[0042] Furthermore, the present invention provides a method for assembling a container closure device, the method comprising: The material is filled into the cavity of the control cover, and then the cylinder circumference structure of the inner cover is sleeved on the cavity of the control cover, the cavity is in the cylinder circumference structure of the inner cover, the first positioning stop buckle of the inner cover is connected with the second positioning stop buckle of the control cover, and the sharp structure of the first section of the cavity is located in the opposite position of the concave chamber structure of the inner cover, and the first buckle of the inner cover and the second buckle of the control cover are buckled together by pressure and material deformation of the inner cover and the control cover, and the sharp structure of the first section of the cavity is located in the concave chamber structure of the inner cover, so that the inner cover and the control cover can be assembled together to form a container closure device; Alternatively, the material is filled into the cylindrical structure of the inner cover, and then the arc-shaped structure of the control cover is inserted into the cylindrical structure of the inner cover, so that the second positioning stop buckle of the control cover is connected with the first positioning stop buckle of the inner cover, and the sharp structure at the front end of the arc-shaped structure is located opposite to the recessed chamber structure of the inner cover. By applying pressure and utilizing the deformation of the materials of the control cover and the inner cover, the first buckle of the inner cover and the second buckle of the control cover are buckled together, and the sharp structure at the front end of the arc-shaped structure is located in the recessed chamber structure of the inner cover, the inner cover and the control cover can be assembled together to form a container closure device.

[0043] Furthermore, the container closure device is installed on the neck of the container by connecting the threads provided on the inner wall of the cover surrounding structure of the inner cover with the threads provided on the outer wall of the container neck; Alternatively, the container closing device is installed on the neck of the container by connecting the blocking structure provided on the inner wall of the cover surrounding structure of the inner cover with the blocking structure provided on the outer wall of the container neck.

[0044] The main chamber of the container contains a first material, and the cavity or circumferential structure of the container closure device contains a second material. Before the container closure device is installed on the neck of the container, the first material is filled into the main chamber of the container through the opening of the container.

[0045] Furthermore, the container closure device and the packaging container and packaging composition provided by the present invention are used in the preparation or packaging and storage of the following products: food or beverages, drinking wine, health food, special medical formula food, ordinary food, medicine, medical device, sanitary product, cosmetics or daily necessities, especially in the packaging and storage of beverages, drinking wine, health food, special medical formula food, ordinary food, medicine, medical device, sanitary product, 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.

[0046] The present invention is of great significance for the packaging and storage of the above-mentioned products, and is of great significance for determining the material ratio applied to consumers or users, especially for the packaging and storage of products whose stability is worse in a liquid environment, or for products such as beverages whose freshness and quality are seriously affected.

[0047] Compared with the prior art, the technical solution of the present invention has the following innovative features.

[0048] First, the container closure device of the present invention has only two components, which is simple, convenient and easy to operate. The container closure device and the independently sealed materials in the packaging container can be released into the main chamber of the container by simply twisting the control cover. There is no residue left after the materials in the container closure device are released. Moreover, after the materials are released into the main chamber of the container, the entire packaging container is still in a sealed state, which meets the requirement that the contents still need to be sealed after mixing and the mixture needs to be further disposed of, such as shaking evenly, standing, fermenting, precipitating, short-term storage or continued storage. In addition, before or after the materials are mixed, the user can also open the channel seal of the channel structure at the rear end of the control cover, such as a threaded sealing cover, and then tighten the sealing cover repeatedly, which is easy to use, simple and convenient.

[0049] Secondly, the sealing performance of the container closure device of the present invention is well controlled, and the use is stable and controllable. The mutually matching and exquisitely designed buckles, positioning stop buckles, recessed chamber structures and rib sheet structures are set. When in use, you only need to rotate the control cover to make the sharp structure on the cavity tube slide from the recessed chamber structure to cut the sealing sheet. The control cover and the inner cover rotate horizontally, and there is no longitudinal displacement between the control cover and the inner cover, which can ensure that the sealing performance between the control cover and the inner cover remains good and stable, and can also ensure the sealing state between the inner cover and the container neck; moreover, when the bottle body is shaken to mix the materials evenly, the materials in the bottle body will not spill out of the bottle mouth, which has good operation, manual control and use experience.

[0050] Thirdly, the container closure device of the present invention is exquisitely designed, properly matched, reliable, stable, easy to operate and accurately controlled. When the inner cover and the control cover rotate to a predetermined position, the positioning stop buckles engage with each other to prevent the inner cover and the control cover from rotating, ensuring that the sealing sheet is opened at a predetermined opening size, so that the material is released at an accurate position, and the size of the opening of the sealing sheet is controlled when the material is released, and has accurate and stable operability and controllability.

[0051] Fourthly, when using the mixture, it is only necessary to open the channel seal of the control cover without removing the entire container closure device from the neck of the container to use the mixed material. This is convenient and hygienic to use and avoids cross contamination caused by the inner core structure of the container closure device being exposed to the external environment.

[0052] Fifthly, the container closure device of the present invention can realize different requirements of screw release mode, screw direction, use method and use function; it can also meet various forms of industrial filling, capping and assembly requirements.

[0053] Sixthly, the container closure device of the present invention has only two components, which is highly efficient and easy to realize in large-scale industrial production for production processes such as filling and assembly of the product; before the inner cover and the control cover are assembled together, the material is filled into the cavity of the control cover or the cylinder structure of the inner cover, thereby realizing an integrated production operation process of material filling and sealing and assembly and molding of the container closure device.

[0054] Seventh, it is easy for industrial mass production. The buckle structure of the control cover and the inner cover of the present invention is easy to assemble, the material filling operation is simple, and it is easy to realize industrial mass production. No large buckle force is required during assembly, and it is easy to carry out, avoiding the vibration caused by the large buckle force that causes the material to leak; and the components after installation are tight and stable.

[0055] Eighth point, the container closure device of the present invention can match the threads of conventional standard containers on the market, and can especially match the caliber of standard beverage bottles with 38 or 30 mouths of the neck opening of the container. No special bottles are required, and the degree of matching with the production of existing industrial products is high. It is suitable for industrial production and assembly, and is also suitable for ready-made, industrial production and filling equipment, which is conducive to the renewal and upgrading of industrial production. There is no need to separately prepare the bottle blanks required for the bottles, and the compatibility with existing industrial accessories is good, which is conducive to matching with the production of existing large-scale industrial products and also conducive to improving production efficiency.

[0056] Ninth, the innovative functional structure of the container closure device of the present invention can meet the requirements of sealed storage and completely smooth release of materials in various forms such as solid powder or particles, liquid, amorphous blocks, high-viscosity liquid, soft sticky state, slurry or viscous substances, and users can also intuitively feel the different properties of the product materials before and after mixing.

[0057] Tenth point, when using the container closure device of the present invention, only the control cover needs to be screwed, and the control cover and the inner cover rotate horizontally, and no longitudinal displacement occurs between the control cover and the inner cover. The appearance of the container closure device will not be changed before and after use, and the aesthetic appearance of the container closure device and the container will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0059] In the figure: Figure 1 to Figure 3: is a schematic diagram of the structure of the container closing device and the packaging container thereof in Example 1 of the present invention, wherein: Figure 1 and Figure 2 is a schematic diagram of the structure of the inner cover, the control cover and the container of the container closure device, which are views from two different directions; Figure 3 is a cross-sectional structural diagram of the container closure device and the container assembled together, wherein the cavity is in a sealed state; Figures 4 to 6 The container closure device of embodiment 2 of the present invention, wherein: Figure 4 and Figure 5 Schematic diagrams of the structure of the inner cover and the control cover of the container closure device, which are views from two different directions; Figure 6 is a cross-sectional structural diagram of the container closure device, wherein the cylinder circumference structure is in a sealed state; Figure 7 to Figure 9 : is a schematic diagram of the structure of the container closing device and the packaging container thereof in Example 3 of the present invention, wherein: Figure 7 and Figure 8 It is a schematic diagram of the structure of the inner cover, the control cover, the threaded cover and the container of the container closure device, which are views from two different directions; Fig. 9 is a cross-sectional structural diagram of the container closure device and the container assembled together, wherein the cylinder surrounding structure is in a sealed state; Figure 10 to Figure 12 The container closure device of embodiment 4 of the present invention, wherein: Fig.10 and Fig.11 It is a schematic diagram of the structure of the inner cover, the control cover, the threaded cover and the container of the container closure device, which are views from two different directions; Fig.12 It is a cross-sectional structural diagram of the container closure device and the container assembled together, wherein the cylindrical structure is in a sealed state.

[0060] Reference numerals: 1, inner cover; 101, cover surrounding structure; 102, cylinder surrounding structure; 103, thread; 104, first buckle; 105, sealing sheet; 106, first positioning stop buckle; 107, recessed chamber structure; 108, supporting and pressing structure; 109, first tight closing circle; 110, thinning connection structure; 111, third buckle; 112, first stop; 2. Control cover; 201. Second buckle; 202. Cavity; 203. Second positioning stop buckle; 204. Sharp structure; 205. Rib sheet; 206. Second tight ring; 207. Arc sheet structure; 208. Channel structure; 21. Threaded cap; 3. Container; 301. Main body chamber; 302. Neck thread; 303. Fourth buckle; 304. Second stopper; 4. First material; 5. Second material. DETAILED DESCRIPTION

[0061] 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.

[0062] 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.

[0063] Embodiment 1. A container closure device, its components and its packaging container.

[0064] refer to Figure 1 to Figure 3 As shown, the container closure device provided in this embodiment includes an inner cover 1 and a control cover 2. Figure 3 2 is a cross-sectional structural diagram of the container closure device and the container 3 of this embodiment assembled together, wherein the cavity 202 is in a sealed state. The container 3 has an open container neck and a main body chamber 301 , and a neck thread 302 is provided on the outer wall of the neck of the container 3 .

[0065] The inner cover 1 comprises a cover surrounding structure 101 and a tube surrounding structure 102. The cover surrounding structure 101 and the tube surrounding structure 102 are connected together to form a ring-shaped structure. A thread 103 is arranged on the inner wall of the cover surrounding structure 101. A first buckle 104 is arranged on the outer wall of the cover surrounding structure 101. A first positioning stop buckle 106 is arranged on the outer wall of the rear end of the cover surrounding structure 101. As shown in the figure, the tail end of the cylinder circumference structure 102 is open, and a sealing sheet 105 is provided at the head end of the cylinder circumference structure 102. The sealing sheet 105 makes the head end of the cylinder circumference structure 102 closed. A recessed chamber structure 107 and a supporting and pressing structure 108 are provided on the inner wall of the sealing sheet 105. The recessed chamber structure 107 is recessed from the inner wall of the sealing sheet 105 and protrudes from the outer wall of the sealing sheet 105. The supporting and pressing structure 108 is a convex structure on the inner wall of the sealing sheet 105. A first closing ring 109 is provided at the tail end of the cylinder circumference structure 102; The portion where the sealing sheet 105 is connected to the inner wall of the head end of the cylinder circumference structure 102 is provided with an inclined structure to reduce its thickness, and then connected to the inner wall of the head end of the cylinder circumference structure 102 to form a thinned connection structure 110. The thickness of the sealing sheet 105 is 0.55mm~1.2mm, preferably 0.75mm~0.9mm, and the thickness of the sealing sheet 105 at the portion where the inner wall of the head end of the cylinder circumference structure 102 is connected is 0.08mm~0.35mm, preferably 0.10mm~0.3mm, and most preferably 0.15mm~0.25mm; for example, preferably 0.12mm, 0.13mm, 0.17mm, 0.19mm, 0.2mm, 0.22mm, 0.23mm, 0.25mm, 0.28mm or 0.3mm.

[0066] The control cover 2 is in a cylindrical structure, and the rear end of the control cover 2 is in a closed shape. As shown in the figure, a second buckle 201 is provided on the inner wall of the side of the control cover 2, and a cavity 202 is provided on the inner wall of the rear end of the control cover 2. A second positioning stop buckle 203 and a second closing ring 206 are provided on the inner wall of the rear end of the control cover 2. The cavity 202 and the side of the control cover 2 form an annular structure, the head end of the cavity 202 is open, the head end of the cavity 202 is provided with a sharp structure 204, and the inner wall of the head end of the cavity is provided with a rib sheet 205.

[0067] The inner cover 1 and the control cover 2 described in this embodiment can be assembled together to form a container closing device.

[0068] The assembly method of the container closure device of the present embodiment comprises: filling the material into the cavity 202 of the control cover 2, and then sleeve the cylinder structure 102 of the inner cover 1 on the cavity 202, the cavity 202 is in the cylinder structure 102 of the inner cover, the first positioning stop buckle 106 of the inner cover is connected with the second positioning stop buckle 203 of the control cover, and the sharp structure 204 and the head end of the rib sheet 205 of the cavity 202 are located at the position facing the concave chamber structure 107 of the inner cover, and the pressure is used to press the cavity 202. By utilizing the deformation of the materials of the inner cover 1 and the control cover 2, the first buckle 104 of the inner cover and the second buckle 201 of the control cover are buckled together, and the inner cover 1 and the control cover 2 can be assembled together to form a container closing device. At this time, the sharp structure 204 and the head end of the rib sheet 205 of the cavity tube 202 are in the concave chamber structure 107 of the inner cover, and the first closing ring 109 set at the tail end of the cylinder structure 102 can be tightly fitted with the outer wall of the tail end of the cavity tube 202, or, as Figure 3 As shown, the first closing ring 109 and the second closing ring 206 are tightly fitted, and the first closing ring 109 is in the groove structure formed by the second closing ring 206 and the outer wall of the cavity tube 202, so that the cavity tube 202 is sealed inside the cylinder surrounding structure 102.

[0069] Furthermore, the thread 103 on the cover surrounding structure 101 of the inner cover 1 is connected with the neck thread 302 of the container 3, so that the container closing device is installed on the neck of the container, and the neck opening of the container 3 is sealed to form a packaging container.

[0070] The main chamber 301 of the container contains the first material 4, and the cavity 202 of the container closure device contains the second material 5. Before the container closure device is installed on the neck of the container 3, the first material 4 is filled into the main chamber 301 of the container through the opening of the container 3.

[0071] In the container closure device of this embodiment, the cover surrounding structure 101 of the inner cover 1 is located inside the control cover 2.

[0072] When in use, the control cover 2 is screwed to rotate the control cover 2 and the inner cover 1 relative to each other, and the sharp structure 204 at the head end of the cavity 202 starts to slide from the recessed chamber structure 107 to cut the thinned connecting structure 110 of the sealing sheet. As the control cover 2 rotates, the ribs 205 at the head end of the cavity 202 push and push the cut until it reaches a predetermined position, and the first positioning stop buckle 106 and the second positioning stop buckle 203 engage with each other to prevent the inner cover 1 and the control cover 2 from rotating. At the same time, the ribs 205 and the sealing sheet are locked. The supporting and pressing structures 108 on the sealing sheet 105 are engaged with each other, pushing open the incision between the sealing sheet 105 and the cylinder circumference structure 102 to form a funnel-shaped material outlet, so that the material contained in the cavity 202 of the container closing device can be released into the container 3 and mixed with the material in the container 3; further screwing the control cover 2 to remove the container closing device from the neck of the container 3 can open the neck opening of the container 3, so that the mixed material in the main chamber 301 of the container can be discharged from the neck opening of the container 3 to achieve the purpose of final use.

[0073] Optionally, by changing the cutting direction of the sharp structure 204 of the control cover 2 when cutting the sealing sheet 105 when the control cover 2 is screwed, and changing the relative position between the supporting structure 108 and the recessed chamber structure 107, the container closing device of this embodiment can achieve different requirements of screwing release mode, screwing direction, use method and use function.

[0074] Example 2. A container closure device, its components and its packaging container.

[0075] refer to Figures 4 to 6 As shown, the container closure device provided in this embodiment includes an inner cover 1 and a control cover 2. Figure 6 1 is a cross-sectional structural diagram of the container closure device of this embodiment, wherein the cylindrical structure 102 is in a sealed state. The inner cover 1 comprises a cover surrounding structure 101 and a cylinder surrounding structure 102, wherein the cover surrounding structure 101 and the cylinder surrounding structure 102 are connected together to form an annular cylinder structure, wherein: The inner wall of the cover surrounding structure 101 is provided with a thread 103, the outer wall of the tail end of the cover surrounding structure 101 or the inner wall of the tail end of the tube surrounding structure 102 is provided with a first positioning stop buckle 106, and the outer wall of the tail end of the tube surrounding structure 102 is provided with a first buckle 104; As shown in the figure, the tail end of the cylinder circumference structure 102 is open, and a sealing sheet 105 is provided at the head end of the cylinder circumference structure 102. The sealing sheet 105 makes the head end of the cylinder circumference structure 102 closed. A recessed chamber structure 107 and a support and pressure structure 108 are provided on the inner wall of the sealing sheet 105. The recessed chamber structure 107 is recessed from the inner wall of the sealing sheet 105 and protrudes from the outer wall of the sealing sheet 105. The support and pressure structure 108 is a convex structure on the inner wall of the sealing sheet 105. A first tight ring 109 is provided at the tail end of the cylinder circumference structure 102 or the tail end of the cover circumference structure 101. As shown in the figure, the first tight ring 109 can also be regarded as an extension structure of the tail end of the cylinder circumference structure 102. The portion where the sealing sheet 105 is connected to the inner wall of the head end of the cylinder circumference structure 102 is provided with an inclined structure to reduce its thickness, and then connected to the inner wall of the head end of the cylinder circumference structure 102 to form a thinned connection structure 110. The thickness of the sealing sheet 105 is 0.55mm~1.2mm, preferably 0.7mm~0.85mm, and the thickness of the sealing sheet 105 at the portion where the inner wall of the head end of the cylinder circumference structure 102 is connected is 0.08mm~0.35mm, preferably 0.10mm~0.3mm, and most preferably 0.15mm~0.25mm, for example, preferably 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.2mm, 0.22mm, 0.23mm, 0.25mm, 0.28mm or 0.3mm.

[0076] The control cover 2 is a cylindrical structure, and the rear end of the control cover 2 is closed. As shown in the figure, a second buckle 201 is provided on the inner wall of the side of the control cover 2, and an arc sheet structure 207 and a second closing ring 206 are provided on the inner wall of the rear end of the control cover 2. A second positioning stop buckle 203 is provided on the outer wall of the rear end of the arc sheet structure 207, a sharp structure 204 is provided at the head end of the arc sheet structure 207, and a rib sheet 205 is provided on the inner wall of the head end of the arc sheet structure 207; Figure 6 As shown, the second closing ring 206 is preferably arranged on the inner wall of the rear end of the control cover 2 and the inner wall of the side enclosure of the control cover 2 in a cylindrical structure. The second closing ring 206 can also adopt the wall structure of the inner wall of the side enclosure of the rear end of the control cover 2.

[0077] The inner cover 1 and the control cover 2 described in this embodiment can be assembled together to form a container closure device. The assembly method of the container closure device in this embodiment includes: filling the material into the cylindrical structure 102 of the inner cover 1, preferably the material is a liquid material, and then inserting the arc-shaped sheet structure 207 of the control cover 2 into the cylindrical structure 102 of the inner cover 1, so that the second positioning stop buckle 203 of the control cover 2 is connected with the first positioning stop buckle 106 of the inner cover 1, and the sharp structure 204 at the head end of the arc-shaped sheet structure 207 is located in the opposite position of the recessed chamber structure 107 of the inner cover 1, and by using pressure and utilizing the deformation of the materials of the control cover 2 and the inner cover 1, the first buckle 104 of the inner cover 1 and the second buckle 201 of the control cover 2 are buckled together, and the sharp structure 204 at the head end of the arc-shaped sheet structure 207 is located in the recessed chamber structure 107 of the inner cover 1, so that the inner cover 1 and the control cover 2 can be assembled together to form a container closure device. Figure 6 As shown, the first closing ring 109 provided at the tail end of the cylinder circumference structure 102 or the tail end of the cover circumference structure 101 can fit tightly with the second closing ring 206 of the control cover 2 to achieve a sealing effect, so that the interior of the cylinder circumference structure 102 is in a sealed state, and the arc sheet structure 207 is sealed inside the cylinder circumference structure 102.

[0078] Furthermore, by connecting the threads 103 on the cover surrounding structure 101 of the inner cover 1 with the threads on the neck of the container, the container closing device is installed on the neck of the container to seal the neck opening of the container, so that the container is closed to form a packaging container.

[0079] The main body chamber of the container contains a first material, and the cylindrical structure 102 of the container closure device contains a second material 5. Before the container closure device is installed on the neck of the container, the first material is filled into the main body chamber of the container through the opening of the container.

[0080] In the container closure device of this embodiment, the cover surrounding structure 101 of the inner cover 1 is located below the control cover 2, and a two-layer structure is formed between the control cover 2 and the cover surrounding structure 101 of the inner cover.

[0081] When the container closing device is used, the cover surrounding structure 101 of the inner cover 1 is screwed so that the container closing device is installed on the neck opening of the container and tightened, and a large friction force is generated between the inner cover 1 and the neck of the container. When in use, the control cover 2 is screwed in the opposite direction so that the control cover 2 and the inner cover 1 rotate relative to each other, and the sharp structure 204 cuts through the thinning connection structure 110. When it is cut to a predetermined position, the first positioning stop buckle 106 and the second positioning stop buckle 203 engage with each other to prevent the inner cover 1 and the control cover 2 from rotating. The rib sheet 205 on the arc sheet structure 207 The supporting and pressing structures 108 on the sealing sheet 105 are engaged with each other, and the incision between the sealing sheet 105 and the cylindrical circumference structure 102 is pushed open to enlarge the incision to form a funnel-shaped material outlet, and the material in the container closing device is released into the main chamber of the container. The control cover 2 is further screwed to overcome the friction between the inner cover 1 and the neck of the container, so that the container closing device is separated from the neck of the container, and the neck opening of the container can be opened, so that the mixed material in the main chamber 301 of the container is discharged from the neck opening of the container to achieve the purpose of final use; or, When the container closure device is used, the cover surrounding structure 101 of the inner cover 1 is screwed to install the container closure device on the neck opening of the container. When in use, the control cover 2 is further screwed in the same direction to make the control cover 2 and the inner cover 1 rotate relative to each other. The sharp structure 204 cuts through the thinning connection structure 110. When it is cut to a predetermined position, the first positioning stop buckle 106 and the second positioning stop buckle 203 engage with each other to prevent the inner cover 1 and the control cover 2 from rotating. The rib sheet 205 on the arc sheet structure 207 and the support sheet 105 on the sealing sheet 105 are engaged with each other. The pressure structures 108 are engaged with each other, and the incision between the sealing sheet 105 and the cylinder circumference structure 102 is pushed open, so that the incision is enlarged to form a funnel-shaped material outlet, and the material in the container closing device is released into the main chamber of the container. At this time, the container closing device is tightened on the neck of the container, and then the control cover 2 is screwed in the opposite direction to separate the container closing device from the neck of the container, so that the neck opening of the container can be opened, and the mixed material in the main chamber 301 of the container is discharged from the neck opening of the container to achieve the purpose of final use; or, When the container closing device is used, the control cover 2 is screwed, and under the interaction of the second positioning stop buckle 203 and the first positioning stop buckle 106, the control cover 2 drives the inner cover 1 to rotate, so that the container closing device is installed on the neck opening of the container and tightened, and a large friction force is generated between the inner cover 1 and the neck of the container. When in use, the control cover 2 is screwed in the opposite direction to make the control cover 2 and the inner cover 1 rotate relative to each other, and the sharp structure 204 cuts through the thinning connection structure 110. When it is cut to a predetermined position, the first positioning stop buckle 106 and the second positioning stop buckle 203 engage with each other to prevent the inner cover 1 from moving relative to the control cover 2. The rib sheet 205 on the arc-shaped structure 207 and the supporting structure 108 on the sealing sheet 105 engage with each other, pushing open the incision between the sealing sheet 105 and the cylindrical structure 102, making the incision larger and forming a funnel-shaped material outlet. The material in the container closing device is released into the main chamber of the container. The control cover 2 is further screwed to overcome the friction between the inner cover 1 and the neck of the container, so that the container closing device is separated from the neck of the container, and the neck opening of the container can be opened, so that the mixed material in the main chamber 301 of the container is discharged from the neck opening of the container to achieve the purpose of final use.

[0082] Example 3. A container closure device, its components and its packaging container.

[0083] refer to Figure 7 to Figure 9 As shown, the container closure device provided in this embodiment includes an inner cover 1, a control cover 2, and a threaded cover 21. Fig. 9 1 is a cross-sectional structural diagram of the container closure device and the container 3 of this embodiment assembled together, wherein the cylindrical surrounding structure 102 is in a sealed state. The container 3 has an open container neck and a main body chamber 301 , and a neck thread 302 and a fourth buckle 303 are provided on the outer wall of the neck of the container 3 .

[0084] The inner cover 1 comprises a cover surrounding structure 101 and a tube surrounding structure 102, the cover surrounding structure 101 and the tube surrounding structure 102 are connected together to form a ring-shaped structure, a thread 103 and a third buckle 111 are arranged on the inner wall of the cover surrounding structure 101, a first buckle 104 is arranged on the outer wall of the cover surrounding structure 101, and a first positioning stop buckle 106 is arranged on the outer wall of the rear end of the cover surrounding structure 101; As shown in the figure, the tail end of the cylinder circumference structure 102 is open, and a sealing sheet 105 is provided at the head end of the cylinder circumference structure 102. The sealing sheet 105 makes the head end of the cylinder circumference structure 102 closed. A recessed chamber structure 107 and a supporting and pressing structure 108 are provided on the inner wall of the sealing sheet 105. The recessed chamber structure 107 is recessed from the inner wall of the sealing sheet 105 and protrudes from the outer wall of the sealing sheet 105. The supporting and pressing structure 108 is a convex structure on the inner wall of the sealing sheet 105. A first closing ring 109 is provided at the tail end of the cylinder circumference structure 102; as shown in the figure, the head end of the cylinder circumference structure 102 of the inner cover 1 is a high-low staggered structure, wherein the head end of the cylinder circumference structure 102 where the recessed chamber structure 107 of the sealing sheet 105 is located is lower than other parts of the head end of the cylinder circumference structure 102.

[0085] The portion where the sealing sheet 105 is connected to the inner wall of the head end of the cylinder circumference structure 102 is provided with an inclined structure to reduce its thickness, and then connected to the inner wall of the head end of the cylinder circumference structure 102 to form a thinned connection structure 110. The thickness of the sealing sheet 105 is 0.55mm~1.2mm, preferably 0.75mm~0.9mm, and the thickness of the sealing sheet 105 at the portion where the inner wall of the head end of the cylinder circumference structure 102 is connected is 0.08mm~0.35mm, preferably 0.10mm~0.3mm, and most preferably 0.15mm~0.25mm; for example, preferably 0.12mm, 0.13mm, 0.17mm, 0.19mm, 0.2mm, 0.22mm, 0.23mm, 0.25mm, 0.28mm or 0.3mm.

[0086] The control cover 2 is a cylindrical structure, and the head end of the control cover 2 is open. As shown in the figure, a second buckle 201 is provided on the inner wall of the side of the control cover 2, and an arc sheet structure 207, a second positioning stop buckle 203 and a second closing ring 206 are provided on the inner wall of the tail end of the control cover 2. The wall body of the head end of the arc sheet structure 207 is provided with a sharp structure 204, and a rib sheet 205 is provided on the inner wall of the head end of the arc sheet structure. The rear end of the control cover 2 is provided with a channel structure 208 , the channel structure 208 has an opening, the outer wall of the channel structure 208 is provided with a thread structure, and the channel structure 208 is connected to the internal space formed by the arc sheet structure.

[0087] The inner cover 1 and the control cover 2 described in this embodiment can be assembled together to form a container closing device.

[0088] The assembly method of the container closure device of the present embodiment comprises: inserting the arc sheet structure 207 of the control cover 2 into the cylindrical structure 102 of the inner cover 1, connecting the second positioning stop buckle 203 of the control cover 2 with the first positioning stop buckle 106 of the inner cover 1, and making the sharp structure 204 at the head end of the arc sheet structure 207 directly opposite to the recessed chamber structure 107 of the inner cover 1, applying pressure and utilizing the deformation of the materials of the control cover 2 and the inner cover 1 to make the first buckle 104 of the inner cover 1 and the second buckle 201 of the control cover 2 The inner cover 1 and the control cover 2 are interlocked and the sharp structure 204 is in the concave chamber structure 107 of the inner cover 1, so that the inner cover 1 and the control cover 2 can be assembled together to form a container closure device, and the first tight ring 109 and the second tight ring 206 are tightly fitted to keep the inner cover 1 and the control cover 2 in a sealed state; further, the material is filled into the container closure device through the channel structure 208 at the rear end of the control cover 2, and the opening of the channel structure 208 is sealed with the threaded cover 21, so that the container closure device containing the material can be obtained; Alternatively, this embodiment further provides another assembly method of a container closure device, the assembly method comprising: The material is filled into the cylindrical structure 102 of the inner cover 1, and then the arc sheet structure 207 of the control cover 2 is inserted into the cylindrical structure 102 of the inner cover, so that the second positioning stop buckle 203 of the control cover 2 is connected with the first positioning stop buckle 106 of the inner cover 1, and the sharp structure 204 at the head end of the arc sheet structure 207 is located at a position directly opposite to the concave chamber structure 107 of the inner cover 1, and the pressure is applied and the material deformation of the control cover 2 and the inner cover 1 is utilized to make the first buckle 104 of the inner cover 1 and the inner cover 1 be connected. The second buckles 201 of the control cover 2 are buckled together, and the sharp structure 204 at the head end of the arc-shaped structure 207 is located in the recessed chamber structure 107 of the inner cover 1, so that the inner cover 1 and the control cover 2 can be assembled together to form a container closure device, and the first tight-fitting ring 109 and the second tight-fitting ring 206 are tightly fitted to keep the inner cover 1 and the control cover 2 in a closed state; the threaded cover 21 is used to seal the opening of the channel structure 208 to obtain a container closure device containing materials.

[0089] Furthermore, the thread 103 and the third buckle 111 provided on the inner cover 1 are matched with the neck thread 302 and the fourth buckle 303 provided on the outer wall of the neck of the container 3 respectively, and are engaged and snapped together, so that the container closing device is installed and fixed on the neck of the container 3, and the neck opening of the container is sealed, so that the container is closed to form a packaging container.

[0090] The main chamber 301 of the container 3 contains the first material 4 , and the container closure device contains the second material 5 . Before the container closure device is installed on the neck of the container 3 , the first material 4 is filled into the main chamber 301 of the container through the opening of the container 3 .

[0091] In the container closure device of this embodiment, the cover surrounding structure 101 of the inner cover 1 is located inside the control cover 2.

[0092] When the container closing device is used, the control cover 2 is screwed to make the control cover 2 and the inner cover 1 rotate relative to each other, and the sharp structure 204 of the control cover 2 starts to slide from the recessed chamber structure 107 to cut through the thinned connecting structure 110. When it cuts to the predetermined position, the first positioning stop buckle 106 and the second positioning stop buckle 203 engage with each other to prevent the inner cover 1 and the control cover 2 from rotating. At the same time, the rib sheet 205 of the control cover 2 and the supporting and pressing structure 108 on the sealing sheet 105 engage with each other, and push open the incision between the sealing sheet 105 and the cylinder structure 102 to enlarge the incision and form a funnel-shaped material outlet, so that the material contained in the container closing device is released into the container 3 and mixed with the material in the container 3 to achieve the effect of mixing and blending. The threaded cover 21 is further opened to allow the mixed material to pass through the channel structure 208 at the rear end of the control cover 2 and finally be discharged to achieve the purpose of using the mixed material.

[0093] Embodiment 4. A container closure device, its components and its packaging container.

[0094] refer to Figure 10 to Figure 12 As shown, the container closure device provided in this embodiment includes an inner cover 1, a control cover 2, and a threaded cover 21. Fig.12 1 is a cross-sectional structural diagram of the container closure device and the container 3 of this embodiment assembled together, wherein the cylindrical surrounding structure 102 is in a sealed state. The container 3 has an open container neck and a main body chamber 301 , and a blocking structure is provided on the outer wall of the container neck, and the blocking structure is composed of a fourth buckle 303 and a second blocking 304 .

[0095] The inner cover 1 comprises a cover surrounding structure 101 and a tube surrounding structure 102, the cover surrounding structure 101 and the tube surrounding structure 102 are connected together to form a ring-shaped structure, a first positioning stop buckle 106 is arranged on the outer wall of the tail end of the cover surrounding structure 101, a blocking structure is arranged on the inner wall of the cover surrounding structure 101, and the blocking structure is composed of a third buckle 111 and a first buckle 112, the third buckle 111 can make the inner cover 1 be installed on the neck of the container, and the first buckle 112 can make the inner cover 1 and the neck of the container unable to rotate relative to each other, and a first buckle 104 is arranged on the outer wall of the cover surrounding structure 101, as shown in the figure, the first buckle 104 can also be regarded as the wall structure of the head end of the cover surrounding structure 101; The tail end of the cylinder circumference structure 102 is open, and a sealing sheet 105 is provided at the head end of the cylinder circumference structure 102. The sealing sheet 105 makes the head end of the cylinder circumference structure 102 closed. A recessed chamber structure 107 and a supporting and pressing structure 108 are provided on the inner wall of the sealing sheet 105. The recessed chamber structure 107 is recessed from the inner wall of the sealing sheet 105 and protrudes from the outer wall of the sealing sheet 105. The supporting and pressing structure 108 is a convex structure on the inner wall of the sealing sheet 105. A first closing ring 109 is provided at the tail end of the cylinder circumference structure 102; as shown in the figure, the head end of the cylinder circumference structure 102 of the inner cover 1 is a high-low staggered structure, wherein the head end of the cylinder circumference structure 102 where the recessed chamber structure 107 of the sealing sheet 105 is located is lower than other parts of the head end of the cylinder circumference structure 102.

[0096] The portion where the sealing sheet 105 is connected to the inner wall of the head end of the cylinder circumference structure 102 is provided with an inclined structure to reduce its thickness, and then connected to the inner wall of the head end of the cylinder circumference structure 102 to form a thinned connection structure 110. The thickness of the sealing sheet 105 is 0.55mm~1.2mm, preferably 0.75mm~0.9mm, and the thickness of the sealing sheet 105 at the portion where the inner wall of the head end of the cylinder circumference structure 102 is connected is 0.08mm~0.35mm, preferably 0.10mm~0.3mm, and most preferably 0.15mm~0.25mm; for example, preferably 0.12mm, 0.13mm, 0.17mm, 0.19mm, 0.2mm, 0.22mm, 0.23mm, 0.25mm, 0.28mm or 0.3mm.

[0097] The control cover 2 is a cylindrical structure, and the head end of the control cover 2 is open. As shown in the figure, a second buckle 201 is provided on the inner wall of the side of the control cover 2, and an arc sheet structure 207, a second positioning stop buckle 203 and a second closing ring 206 are provided on the inner wall of the tail end of the control cover 2. The wall body of the head end of the arc sheet structure 207 is provided with a sharp structure 204, and a rib sheet 205 is provided on the inner wall of the head end of the arc sheet structure. The rear end of the control cover 2 is provided with a channel structure 208 , the channel structure 208 has an opening, the outer wall of the channel structure 208 is provided with a thread structure, and the channel structure 208 is connected to the internal space formed by the arc sheet structure.

[0098] The inner cover 1 and the control cover 2 described in this embodiment can be assembled together to form a container closing device.

[0099] The assembly method of the container closure device of the present embodiment comprises: inserting the arc sheet structure 207 of the control cover 2 into the cylindrical structure 102 of the inner cover 1, connecting the second positioning stop buckle 203 of the control cover 2 with the first positioning stop buckle 106 of the inner cover 1, and making the sharp structure 204 at the head end of the arc sheet structure 207 directly opposite to the recessed chamber structure 107 of the inner cover 1, applying pressure and utilizing the deformation of the materials of the control cover 2 and the inner cover 1 to make the first buckle 104 of the inner cover 1 and the second buckle 201 of the control cover 2 The inner cover 1 and the control cover 2 are interlocked and the sharp structure 204 is in the concave chamber structure 107 of the inner cover 1, so that the inner cover 1 and the control cover 2 can be assembled together to form a container closure device, and the first tight ring 109 and the second tight ring 206 are tightly fitted to keep the inner cover 1 and the control cover 2 in a sealed state; further, the material is filled into the container closure device through the channel structure 208 at the rear end of the control cover 2, and the opening of the channel structure 208 is sealed with the threaded cover 21, so that the container closure device containing the material can be obtained; Alternatively, this embodiment further provides another assembly method of a container closure device, the assembly method comprising: The material is filled into the cylindrical structure 102 of the inner cover 1, and then the arc sheet structure 207 of the control cover 2 is inserted into the cylindrical structure 102 of the inner cover, so that the second positioning stop buckle 203 of the control cover 2 is connected with the first positioning stop buckle 106 of the inner cover 1, and the sharp structure 204 at the head end of the arc sheet structure 207 is located at a position directly opposite to the concave chamber structure 107 of the inner cover 1, and the pressure is applied and the material deformation of the control cover 2 and the inner cover 1 is utilized to make the first buckle 104 of the inner cover 1 and the inner cover 1 be connected. The second buckles 201 of the control cover 2 are buckled together, and the sharp structure 204 at the head end of the arc-shaped structure 207 is located in the recessed chamber structure 107 of the inner cover 1, so that the inner cover 1 and the control cover 2 can be assembled together to form a container closure device, and the first tight-fitting ring 109 and the second tight-fitting ring 206 are tightly fitted to keep the inner cover 1 and the control cover 2 in a closed state; the threaded cover 21 is used to seal the opening of the channel structure 208 to obtain a container closure device containing materials.

[0100] Furthermore, the third buckle 111 and the first stopper 112 provided on the inner cover 1 are matched with the fourth buckle 303 and the second stopper 304 provided on the outer wall of the neck of the container 3 respectively, and are buckled and engaged together, so that the container closing device is installed and fixed on the neck of the container 3, and the neck opening of the container is sealed, so that the container is closed to form a packaging container.

[0101] The main chamber 301 of the container 3 contains the first material 4 , and the container closure device contains the second material 5 . Before the container closure device is installed on the neck of the container 3 , the first material 4 is filled into the main chamber 301 of the container through the opening of the container 3 .

[0102] In the container closure device of this embodiment, the cover surrounding structure 101 of the inner cover 1 is located inside the control cover 2, and the control cover and the outer wall of the main chamber 301 of the container 3 form a regular appearance.

[0103] When the container closing device is used, the control cover 2 is screwed to make the control cover 2 and the inner cover 1 rotate relative to each other, and the sharp structure 204 of the control cover 2 starts to slide from the recessed chamber structure 107 to cut through the thinned connecting structure 110. When it cuts to a predetermined position, the first positioning stop buckle 106 and the second positioning stop buckle 203 engage with each other to prevent the inner cover 1 and the control cover 2 from rotating. At the same time, the rib sheet 205 of the control cover 2 and the supporting and pressing structure 108 on the sealing sheet 105 engage with each other, and push open the incision between the sealing sheet 105 and the cylinder structure 102 to enlarge the incision and form a funnel-shaped material outlet, so that the material contained in the container closing device can be released into the container 3 and mixed with the material in the container 3 to achieve the effect of mixing and blending. The threaded cover 21 is further opened to allow the mixed material to pass through the channel structure 208 at the rear end of the control cover 2 and finally be discharged to achieve the purpose of using the mixed material.

[0104] Optionally, by changing the cutting direction of the sharp structure 204 of the control cover 2 when cutting the sealing sheet 105 when screwing the control cover 2, and changing the relative position between the supporting structure 108 and the recessed chamber structure 107, the container closing device of this embodiment can achieve different screwing directions, screwing release methods and functions.

[0105] Example 5. Test on the impact of product qualification rate.

[0106] When the inner cover 1 described in Example 3 is produced by an injection mold, the injection gate is set at the center of the inner wall of the sealing sheet 105 of the barrel structure 102.

[0107] A test was conducted to investigate the effect of different injection gate locations on the product qualification rate of the inner cover 1.

[0108] Test method: (1) The injection molding gate of the mold is set at the center of the inner wall of the sealing sheet 105, and the product obtained by injection molding is set as product A. The injection molding gate of the mold is set on the outer wall of the cover surrounding structure 101, and the product obtained by injection molding is set as product B. The size, shape, structural form and dimensions, number of mold cavities, etc. of product A and product B are exactly the same. The thickness of the connection between the sealing sheet and the head end of the barrel surrounding structure is 0.23mm±0.015mm.

[0109] (2) Product A and Product B are made of the same high-density polyethylene material, and the same injection molding temperature, injection molding pressure, injection molding time, holding time, etc., and 7,000 products A and 7,000 products B are produced respectively. Both injection molded products have complete structures, no glue defects, and no flash.

[0110] (3) Randomly select 500 products A and B, and conduct sealing tests on the key sealing structure between the sealing piece and the inner wall of the head end of the cylinder structure, which is connected by thinning, to determine the product qualification rate.

[0111] (4) Test method: Use a leakage and sealing strength tester to test, pressurize the inner cover product from the tail opening to 200KPa, maintain the pressure underwater for 1 minute, and observe whether there is any leakage.

[0112] Test results: 500 products 1A, 0 air leakage, 100% sealing pass rate, 500 products B, 261 air leakage, 47.8% sealing pass rate. It can be seen that the sealing pass rate of the product when the injection gate of the inner cover is set at the center of the inner wall of the sealing sheet reaches 100%, which is significantly different from the sealing pass rate of the product when the injection gate is set on the outer wall of the cover surrounding structure 101.

[0113] Example 6. Test on the impact of product qualification rate.

[0114] The inner cover 1 described in Example 3 is used. When an injection mold is used for production, the injection gate is set at the center of the inner wall of the sealing sheet 105. The different thicknesses of the connection between the sealing sheet and the head end of the barrel structure are tested to determine the influence of the product qualification rate of the inner cover 1.

[0115] Test method: (1) The injection gate of the mold is set at the center of the inner wall of the sealing piece 105. The same high-density polyethylene material is used. The same injection molding temperature, injection molding pressure, injection molding time, holding time, etc. are used. The thickness of the connection between the sealing piece and the head end of the barrel structure is set to 0.04mm, 0.06mm, 0.09mm, 0.12mm, 0.15mm, 0.19mm, 0.22mm, 0.25mm, 0.28mm, 0.3mm, and 0.35mm, respectively, with a deviation range of ±0.015mm; 7,000 inner cover products are produced respectively. The injection molded products have complete structures, no glue defects, and no flash.

[0116] (3) Randomly select 500 inner cover products and conduct sealing tests on the key sealing structure between the sealing piece and the inner wall of the head end of the cylinder circumference structure that is connected by thinning, and determine the product qualification rate.

[0117] (4) Test method: Use a leakage and sealing strength tester to test, pressurize the inner cover product from the tail opening to 200KPa, maintain the pressure underwater for 1 minute, and observe whether there is any leakage.

[0118] Test results: The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.04mm, the number of air leaks is 172, and the sealing qualification rate is 65.6%; The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.06mm, the number of air leaks is 22, and the sealing qualification rate is 95.6%; The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.09mm, the number of air leaks is 0, and the sealing qualification rate is 100%; The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.12mm, the number of air leaks is 0, and the sealing qualification rate is 100%; The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.15mm, the number of air leaks is 0, and the sealing qualification rate is 100%; The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.19mm, the number of air leaks is 0, and the sealing qualification rate is 100%; The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.22mm, the number of air leakage is 0, and the sealing qualification rate is 100%; The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.25mm, the number of air leakage is 0, and the sealing qualification rate is 100%; The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.28mm, the number of air leaks is 0, and the sealing qualification rate is 100%; The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.30mm, the number of air leakage is 0, and the sealing qualification rate is 100%; The thickness of the sealing piece at the connection point with the head end of the cylinder circumference structure is 0.35mm, the number of air leakage is 0, and the sealing qualification rate is 100%.

[0119] Example 7. A packaging composition comprising two independently sealed materials.

[0120] A packaging composition, comprising a container, a container closing device, a first material 4, and a second material 5, wherein the container is a container having an open neck, and the container closing device is the container closing device described in any one of Embodiments 1 to 5, which 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; The first material 4 is in the main chamber of the container, and the second material 5 is in the cavity 202 of the container closure device or in the cylinder surrounding structure 102; 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 liquid, 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. The solid material is preferably a solid powder material, a solid granular material, a pill material, or a tablet material. The solid granular material includes but is not limited to effervescent granules, rapidly disintegrating granules, and ordinary granules used in pharmacy, etc. The pill material includes but is not limited to micropills and large pills used in pharmacy, and the tablet material includes but is not limited to effervescent tablets, dispersible tablets, rapidly disintegrating tablets, and ordinary tablets used in pharmacy. The liquid material includes a water-based liquid material or a fat-soluble liquid material.

[0121] Example 8. Application.

[0122] Use of the container closure device described in any one of Examples 1 to 5, or the packaging composition containing two independently sealed materials described in Example 7, in the preparation or packaging and storage of the following products: food containing liquid ingredients, beverages, drinking wine, health food, special medical purpose formula food, ordinary food, medicine, medical equipment, sanitary products, cosmetics or daily necessities.

[0123] It should be understood that, as used herein, the singular form "a" or "an" is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations of one or more of the items listed in association. The serial numbers of the embodiments disclosed in the above embodiments of the present invention are for description only and do not represent the advantages and disadvantages of the embodiments.

[0124] A person skilled 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 of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept 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 changes in different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A container closure device, characterized in that: The container has an open container neck and a main body chamber, and the container closure device includes an inner cover and a control cover, wherein: The inner cover has a cover surrounding structure and a tube surrounding structure, the cover surrounding structure and the tube surrounding structure are connected together to form a ring-shaped structure, a thread or a blocking structure is provided on the inner wall of the cover surrounding structure, and the inner cover is provided with a first buckle and a first positioning stop buckle; The first buckle is arranged at any of the following positions: the outer wall of the cover surrounding structure, the rear end of the cover surrounding structure, or the outer wall of the rear end of the tube surrounding structure; The first positioning stop buckle is arranged at any of the following positions: the tail end of the cover surrounding structure, the outer wall of the cover surrounding structure, or the tail end of the cylinder surrounding structure; The tail end of the cylinder circumference structure is open, and a sealing sheet is provided at the head end of the cylinder circumference structure. A recessed chamber structure and a supporting and pressing structure are provided on the inner wall of the sealing sheet. The recessed chamber structure is recessed from the inner wall of the sealing sheet and protrudes from the outer wall of the sealing sheet. The supporting and pressing structure is a convex structure on the inner wall of the sealing sheet. The portion where the sealing sheet is connected to the inner wall of the head end of the cylinder circumference structure is provided with an inclined surface structure to reduce its thickness, and then connected to the inner wall of the head end of the cylinder circumference structure to form a thinned connection structure; The control cover is a cylindrical structure, the rear end of the control cover is provided with a cavity tube or an arc sheet structure, the head end of the cavity tube or the head end of the arc sheet structure is provided with a sharp structure, the inner wall of the head end of the cavity tube or the inner wall of the head end of the arc sheet structure is provided with a rib sheet, and the sharp structure is a spike structure or a sharp structure; The control cover is provided with a second buckle and a second positioning stop buckle, the second buckle is provided on the inner wall of the side enclosure of the control cover, and the second positioning stop buckle is provided at any of the following positions: the inner wall of the rear end of the control cover, the inner wall of the side enclosure of the control cover, the outer wall of the rear end of the cavity, or the outer wall of the rear end of the arc sheet structure; The inner cover and the control cover can be assembled together to form a container closing device by mutually engaging the first snap and the second snap, wherein the cavity tube or arc sheet structure of the control cover is inside the cylinder circumferential structure of the inner cover, the first positioning stop buckle of the inner cover and the second positioning stop buckle of the control cover can be connected to each other, and the sharp structure of the control cover is in the recessed chamber structure of the sealing sheet.

2. A container closure device according to claim 1, characterized in that: A thread or a blocking structure is provided on the outer wall of the container neck; The container closure device can be installed on the container neck by connecting the threads provided on the inner wall of the cover surrounding structure with the threads provided on the outer wall of the container neck; or, The container closing device can be installed on the container neck by connecting the blocking structure arranged on the inner wall of the cover surrounding structure with the blocking structure arranged on the outer wall of the container neck.

3. A container closure device according to claim 1, characterized in that: The rear end of the control cover is closed; or A channel structure is arranged at the rear end of the control cover. The channel structure has an opening or is in the shape of an opening. The channel structure is connected to the internal space of the cavity tube or to the internal space formed by the arc sheet structure.

4. A container closure device according to claim 1, characterized in that: The inner cover and the control cover can rotate with each other, and the sharp structure of the control cover can slide from the recessed chamber structure of the sealing sheet and cut the thinned connecting structure of the sealing sheet. When the thinned connecting structure is cut to a predetermined position, the first positioning stop buckle and the second positioning stop buckle can engage with each other to prevent the inner cover and the control cover from rotating, and the rib sheet at the head end of the cavity tube or the rib sheet at the head end of the arc sheet structure can engage with the supporting and pressing structure on the sealing sheet and push open the incision between the sealing sheet and the tube circumference structure.

5. A container closure device according to claim 1, characterized in that: The thickness of the sealing sheet is 0.55 mm to 1.2 mm, and the thickness of the connection between the sealing sheet and the inner wall of the head end of the cylinder circumference structure is 0.06 mm to 0.45 mm; The inner cover is prepared by an injection mold, and the injection gate of the inner cover is arranged at the center position of the inner wall of the sealing sheet or the center position of the outer wall of the sealing sheet.

6. A container closure device according to claim 1, characterized in that: The inner cover is provided with a first positioning stop buckle, the sealing sheet is provided with a recessed chamber structure and a supporting and pressing structure, and the control cover is provided with a second positioning stop buckle, a sharp structure and a rib sheet; or, Two first positioning stop buckles symmetrically distributed are arranged on the inner cover, two recessed chamber structures symmetrically distributed and two supporting and pressing structures symmetrically distributed are arranged on the sealing sheet, two second positioning stop buckles symmetrically distributed are arranged on the control cover, two sharp structures symmetrically distributed are arranged on the cavity tube or arc-shaped structure of the control cover, and two ribs symmetrically distributed are arranged on the cavity tube or arc-shaped structure of the control cover.

7. A container closure device according to claim 1, characterized in that: The cover surrounding structure of the inner cover is located inside the control cover; Alternatively, the cover surrounding structure of the inner cover is located at the lower part of the control cover, and a two-layer structure is formed between the control cover and the cover surrounding structure of the inner cover.

8. An inner cover of a container closure device, characterized in that: The inner cover has a cover surrounding structure and a tube surrounding structure, the cover surrounding structure and the tube surrounding structure are connected together to form a ring-shaped structure, a thread or a blocking structure is arranged on the inner wall of the cover surrounding structure, and the inner cover is provided with a first buckle and a first positioning stop buckle; The first buckle is arranged at any of the following positions: the outer wall of the cover surrounding structure, the rear end of the cover surrounding structure, or the outer wall of the rear end of the tube surrounding structure; The first positioning stop buckle is arranged at any of the following positions: the tail end of the cover surrounding structure, the outer wall of the cover surrounding structure, or the tail end of the cylinder surrounding structure; The tail end of the cylinder circumference structure is open, and a sealing sheet is provided at the head end of the cylinder circumference structure. A recessed chamber structure and a supporting and pressing structure are provided on the inner wall of the sealing sheet. The recessed chamber structure is recessed from the inner wall of the sealing sheet and protrudes from the outer wall of the sealing sheet. The supporting and pressing structure is a convex structure on the inner wall of the sealing sheet. The portion where the sealing sheet is connected to the inner wall of the head end of the cylinder circumference structure is provided with an inclined surface structure to reduce its thickness, and then connected to the inner wall of the head end of the cylinder circumference structure to form a thinned connection structure, wherein the thickness of the sealing sheet is 0.55mm-1.2mm, and the thickness of the portion where the sealing sheet is connected to the inner wall of the head end of the cylinder circumference structure is 0.06mm-0.45mm; The inner cover is prepared by an injection mold, and the injection gate of the inner cover is arranged at the center position of the inner wall of the sealing sheet or the center position of the outer wall of the sealing sheet.

9. The inner cover of a container closure device according to claim 8, characterized in that: The container has an open container neck and a main body chamber, and a thread or a blocking structure is arranged on the outer wall of the container neck; The inner cap can be connected to the container neck by the threads provided on the inner wall of the cap surrounding structure and the threads provided on the outer wall of the container neck, so that the inner cap can be installed on the container neck; or, The inner cover can be installed on the container neck by connecting the blocking structure arranged on the inner wall of the cover surrounding structure with the blocking structure arranged on the outer wall of the container neck.

10. A control cover for a container closure device, characterized in that: The control cover is a cylindrical structure, the rear end of the control cover is provided with a cavity tube or an arc sheet structure, the head end of the cavity tube or the head end of the arc sheet structure is provided with a sharp structure, the inner wall of the head end of the cavity tube or the inner wall of the head end of the arc sheet structure is provided with a rib sheet, and the sharp structure is a spike structure or a sharp structure; The control cover is provided with a second buckle and a second positioning stop buckle, the second buckle is provided on the inner wall of the side enclosure of the control cover, and the second positioning stop buckle is provided at any of the following positions: the inner wall of the rear end of the control cover, the inner wall of the side enclosure of the control cover, the outer wall of the rear end of the cavity, or the outer wall of the rear end of the arc sheet structure; The rear end of the control cover is closed; or, the rear end of the control cover is provided with a channel structure, the channel structure has an opening or is in an opening shape, and the channel structure is connected to the internal space of the cavity tube or the internal space formed by the arc sheet structure.

11. A packaging container, characterized in that: The packaging container is composed of the container closure device according to claim 1 and a container, wherein the container comprises a container neck with an opening and a main body chamber, and a thread or a blocking structure is arranged on the outer wall of the container neck; The container closure device can be installed on the container neck by connecting the threads provided on the inner wall of the cover surrounding structure with the threads provided on the outer wall of the container neck; or, the container closure device can be installed on the container neck by connecting the blocking structure provided on the inner wall of the cover surrounding structure with the blocking structure provided on the outer wall of the container neck.

12. A packaging composition, characterized in that: The packaging composition is composed of two materials, the container closure device according to claim 1 and a container, wherein the container comprises a container neck with an opening and a main body chamber, and a thread or a blocking structure is arranged on the outer wall of the container neck; The container closure device can be installed on the container neck by connecting the threads provided on the inner wall of the cover surrounding structure with the threads provided on the outer wall of the container neck; or the container closure device can be installed on the container neck by connecting the blocking structure provided on the inner wall of the cover surrounding structure with the blocking structure provided on the outer wall of the container neck; The main body of the container contains one material and the container closure contains another material.

13. The container closure device of claim 1 or the method for assembling a packaging container of claim 11, characterized in that: The assembly method comprises: sleeve the cylinder circumference structure of the inner cover on the cavity cylinder of the control cover, the cavity cylinder is in the cylinder circumference structure of the inner cover, the first positioning stop buckle of the inner cover is connected with the second positioning stop buckle of the control cover, and the sharp-shaped structure of the first section of the cavity cylinder is located at a position directly opposite to the concave chamber structure of the inner cover, and the first buckle of the inner cover and the second buckle of the control cover are buckled together by pressure and by utilizing the deformation of the materials of the inner cover and the control cover, and the sharp-shaped structure of the first section of the cavity cylinder is located in the concave chamber structure of the inner cover; Alternatively, the arc-shaped structure of the control cover is inserted into the cylindrical structure of the inner cover, so that the second positioning stop buckle of the control cover is connected to the first positioning stop buckle of the inner cover, and the sharp structure at the front end of the arc-shaped structure is located opposite to the recessed chamber structure of the inner cover. By applying pressure and utilizing the deformation of the materials of the control cover and the inner cover, the first buckle of the inner cover and the second buckle of the control cover are buckled together, and the sharp structure at the front end of the arc-shaped structure is located in the recessed chamber structure of the inner cover.

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