A container sealing device and its packaging container and application

Abstract

A container sealing device and its packaging container and application, wherein the cover member comprises a cover surrounding structure and a cavity tube structure, the inner wall of the cover surrounding structure is provided with threads, the head end of the cavity tube structure is open and the tail end is closed or the tail end is provided with a channel structure, the release member is provided with a sealing sheet with a thinning connection structure and a breakthrough structure, the release member is made of low-density polyethylene material with a tensile strength of 7.1-8.9 MPa and a breaking elongation of 50%-220% through mold injection molding, the release member can be installed and sleeved on the outer wall of the cavity tube structure of the cover member, the container sealing device can be installed at the neck opening of the container, and by screwing the cover member, the cavity tube structure breaks the thinning connection structure of the sealing sheet of the release member, and the sealing sheet is pushed to the outside of the cavity tube structure, so that the material in the cavity tube structure is released into the container; the present invention also provides a packaging container, a packaging composition, an assembly method of the container sealing device and the application thereof.

Description

Technical Field

[0001] The invention relates to the field of packaging containers, and in particular to a container sealing device, a packaging container and an application thereof. Background Art

[0002] In many applications such as mixed packaging of different materials, it is very necessary to release each material into another material shortly before using the mixture of various materials. 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 unexpectedly or cause the quality of the mixture to deteriorate. A common example is, for example, two or more drug components, which have better stability and longer shelf life when not mixed than when mixed; for another example, for mixed liquid products, such as beverages, liquid medicines, special medical formula food homogenate meals, liquid cosmetics, liquid reagents and other products, during the shelf life of the product, it is necessary to store two or more different materials in the product separately to make it more conducive to the stability, freshness, function 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 recombining them together when using them, which is easy to cause many disadvantages such as inconvenience in carrying, inconvenience in use, and easy to cause secondary pollution.

[0003] International patent application WO2007 / 129116 and international patent application WO2012 / 175934 disclose a container closure device, in which a fluid chamber is provided in a cover member, and a plug member is driven by lifting the shell to open the opening of the fluid chamber, thereby introducing the contents in the cover member into the container; however, the above technology or other prior art solutions have the following disadvantages: (1) The outlet of the material storage and release component is small, and it is impossible to smoothly release solid materials and viscous materials, especially amorphous block materials, larger solid materials or viscous materials, which are difficult to smoothly release into the container; (2) When using the mixture in the container, the entire container closure device needs to be removed from the neck of the container, so that the inner core structure of the container closure device is exposed to the outside of the container, which is easy to cause cross-contamination or accidental contamination of the mixture in the container; (3) The container closure device has a large opening, and the opening of the container closure device is not easy to be opened. After the material is released into the bottle body, the sealing device can be separated from the bottle body. At this time, the material in the bottle body has not been completely mixed. If the material is mixed evenly by shaking the bottle body, the material will overflow from the bottle mouth, which is not conducive to the convenient use of consumers. There are major defects in the final mixing of the materials; (4) When the container sealing device is opened to release the contents into the container, the container neck opening is also opened at the same time, so that the sealing of the container is destroyed at the same time, and it is impossible to meet the requirements that the contents still need to be sealed and the mixture needs to be further disposed of after mixing; (5) The structural setting of the cover member can only be used to seal liquid materials. The plug member set is difficult to achieve sealing and release of solid materials, and the fluid chamber needs to be pressurized to release the liquid material; (6) Due to the existence of its specific plug member, after the contents are released, a large amount of contents will remain in the cover member, resulting in incomplete release of the contents.

[0004] Chinese patent publication number CN117902165A discloses a container sealing device that can be assembled in a replaceable manner, including a cover member and a release member, wherein a cavity structure with a closed tail end and an open head end is provided in the cover member, the release member is a cylindrical structure, and a closed sealing sheet is provided at the head end of the release member, and the cylindrical structure of the release member is installed and sleeved on the outer wall of the cavity structure of the cover member. When the container sealing device is used, the push sheet structure of the release member is pushed by the mouth of the container opening toward the tail end of the cavity structure through the interaction between the thread structure of the cover member and the thread of the container neck, and the wall of the head end of the cavity structure breaks the sealing sheet of the release member. The sealing piece is pushed to the outside of the cavity structure, so that the material contained in the cavity structure can be released into the container and mixed and formulated with other materials in the container; however, the container sealing device has the following problems: first, the release member of the container sealing device is made of conventional polymer materials, and the sealing piece is difficult to be broken with appropriate twisting force, and the qualified rate of the sealing piece being broken is low, and the success rate of material release is low, which is difficult to use for the elderly, children, women and other people with small hand twisting force, seriously affecting the reliability of the container sealing device, and also limiting the application range of the product. It should be noted that according to or with reference to the specification requirements of GB / T17876, when the torque required for twisting is greater than 3.0Nm, the performance of the product is reduced and cannot meet the use requirements; second, when using the mixture in the container, the entire container sealing device needs to be removed from the neck of the container, so that the cavity structure of the container sealing device is exposed to the outside of the container, which is easy to cause cross contamination or accidental contamination of the mixture in the container. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a container sealing device, which has the functions of sealing, storing and releasing materials. The container sealing device of the present invention can be installed at the neck opening of the container. By screwing the container sealing device, the material sealed and stored in the container sealing device is released into the container and mixed and formulated with another material in the container.

[0006] The present invention also provides components, packaging containers, and packaging compositions comprising the container sealing device, as well as an assembling method and application of the container sealing device.

[0007] The container of the present invention comprises a container neck with an opening and a main body chamber, and a thread is arranged on the outer wall of the container neck, such as a threaded bottle with an open neck, a packaging bag with an open neck and a threaded bottle with a neck;

[0008] The container sealing device refers to a device that can be installed at the neck opening of the container to seal the neck opening of the container to form a packaging container, and the container sealing device contains materials. By screwing the container sealing device, the materials contained in the device are released into the container and mixed with the materials in the container to achieve the purpose of mixing and preparing the contents before use. The container sealing device and its packaging container can be widely used in the packaging of all materials that need to be stored independently and can be mixed and prepared instantly.

[0009] Specifically, the present invention provides a container sealing device, which is composed of a cover member and a release member, wherein: the cover member has a cover surrounding structure and a cavity tube structure, the cover surrounding structure and the cavity tube structure are connected together to form a ring-shaped structure, and the inner wall of the cover surrounding structure is provided with a thread;

[0010] The head end of the cavity tube structure is open, and a first buckle is provided on the outer wall of the cavity tube structure;

[0011] The tail end of the cavity tube structure is in a closed shape, or the tail end of the cavity tube structure is provided with a channel structure connected to the internal space of the cavity tube structure, the channel structure has an opening or is in an open shape, and a sealing member can be installed on the channel structure to seal the opening of the channel structure, and the sealing member includes a sealing cover, a sealing film or a sealing plug. The channel sealing member has the function of installing the container sealing device of the present invention on the neck of the container to form a packaging container, so that the material or the mixed material in the packaging container is in a sealed state, and the mixed material can flow from the main chamber of the container through the channel structure, and the seal can be opened to discharge the mixed material to the outside of the packaging container without removing the entire container sealing 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 sealing device being exposed to the external environment;

[0012] 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;

[0013] Alternatively, the sealing cover is installed on the channel structure by bonding or welding to achieve a sealing state;

[0014] Alternatively, the sealing film is installed at the rear end of the channel structure by bonding or welding, and reaches a sealing state;

[0015] 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 release member has a cylindrical structure, a second buckle is arranged on the inner wall of the cylindrical structure, a sealing sheet is arranged at the head end of the cylindrical structure, and the portion where the sealing sheet is connected to the inner wall of the cylindrical structure is provided with a slope structure to reduce its thickness, and then connected to the inner wall of the cylindrical structure to form a thinning connection structure. Such a structural arrangement enables the sealing sheet and the inner wall of the cylindrical structure to achieve a good sealing effect through the thinning connection structure, and is conducive to the smooth breaking of the sealing sheet; preferably, the thickness of the sealing sheet is 0.75mm-1.2mm, preferably 0.8mm-1mm, and the thickness of the sealing sheet at the connection with the inner wall of the cylindrical structure is 0.06mm-0.45mm, preferably 0.08mm-0.35mm, and most preferably 0.17mm-0.2mm; a push sheet structure in the form of an annular sheet is arranged on the outer wall of the tail end of the cylindrical structure;

[0017] A sheet-shaped pulling structure connected to each other is arranged between the sealing sheet of the release member and the inner wall of the cylindrical structure of the release member, and the pulling structure can keep the sealing sheet connected to the cylindrical structure of the release member after the sealing sheet is broken, and will not be separated from the cylindrical structure. The pulling structure is arranged between the inner wall of the sealing sheet and the inner wall of the cylindrical structure of the release member, or the pulling structure is arranged between the outer wall of the sealing sheet and the inner wall of the cylindrical structure of the release member;

[0018] A rib-shaped breakthrough structure is provided on the inner wall of the sealing sheet and at a position directly opposite to the pulling structure. The function of the breakthrough structure is that when the wall at the head end of the cavity structure breaks through the thinned connection structure of the sealing sheet of the release member, it will first press the breakthrough structure, so that the bursting force at this point is concentrated and enhanced, so that the screwing force required for the bursting process is smaller, and the bursting effect is smoother and easier to achieve;

[0019] The release member is made of low-density polyethylene material through mold injection molding, and the low-density polyethylene material has the following performance parameters: tensile strength 7.1-8.9 MPa, elongation at break 50%-220%.

[0020] The first buckle of the cover member and the second buckle of the release member can be buckled together, so that the release member is installed and sleeved on the outer wall of the cavity tube structure of the cover member, and the opening of the cavity tube structure is sealed; the first buckle and the second buckle can match each other and buckle together, which can not only enhance the sealing performance of the inner wall of the cylinder structure of the release member to the cavity tube structure, but also stabilize the release member and the cavity tube structure of the cover member, ensuring that the release member will not detach or fall off from the cavity tube structure of the cover member during use of the container sealing device.

[0021] The function of the container sealing device of the present invention is as follows: the material is filled into the cavity structure through the opening at the head end of the cavity structure of the cover member, the release member is sleeved on the outer wall of the cavity structure, and the first buckle and the second buckle are mutually buckled together, and the release member can be installed and sleeved on the outer wall of the cavity structure of the cover member, so that the material is sealed and stored in the cavity structure, and the container sealing device of the present invention can be formed;

[0022] When in use, the container sealing device is placed at the opening of the container neck, so that the cavity tube structure and the release member extend into the opening of the container neck, and the push piece structure of the release member contacts the edge of the container opening. The threads arranged on the inner wall of the cover surrounding structure and the threads of the container neck can be connected to each other. The cover member is screwed so that the threads of the cover member and the threads of the container neck are connected to each other. Through the screwing force of the threads, the cavity tube structure further extends into the container neck, and the push piece structure of the release member is pushed toward the rear end of the cavity tube structure by the edge of the container opening, so that the wall body at the head end of the cavity tube structure presses the breakthrough structure, and then breaks the thinning connection structure of the sealing piece of the release member, and pushes the sealing piece to the outside of the cavity tube structure, so that the material in the cavity tube structure is released into the container and mixed with the material in the container, so as to achieve the effect of mixing and blending.

[0023] When the mixed material is needed, the cover member can be screwed in the opposite direction to loosen the threaded connection, so that the container sealing device is removed from the container neck, and the mixed material can be used. Alternatively, the seal on the channel structure can be opened with the container sealing device still installed on the container neck, and the mixed material can be used.

[0024] Furthermore, preferably, the sealing sheet of the releasing member is in the form of a stepped sheet structure, so that the sealing sheet forms a shape with a height difference, which is beneficial for the wall at the head end of the cavity tube structure to first break through the thinning connection structure of the sealing sheet of the releasing member, and then break through other parts of the thinning connection structure, which is beneficial to the concentrated breakthrough of the breaking force, making the breaking process smooth and easy to achieve.

[0025] Most preferably, the sealing sheet of the release member is a stepped sheet structure, so that the sealing sheet is formed into a shape with a height difference, and a sheet-shaped pulling structure is provided at a portion of the thinned connecting structure closer to the head end of the cylindrical structure of the release member for connecting the sealing sheet and the inner wall of the cylindrical structure to each other. In addition, a rib-shaped breakthrough structure is provided on the inner wall of the sealing sheet of the release member and at a portion of the thinned connecting structure closer to the tail end of the cylindrical structure of the release member. Preferably, the pulling structure and the breakthrough structure are distributed in positions opposite to each other on the sealing sheet, which can make the bursting process of the sealing sheet smoother and easier to achieve, and ensure that the sealing sheet remains connected to the cylindrical structure of the release member after being burst, and does not detach from the cylindrical structure of the release member.

[0026] The container sealing device of the present invention is made of polymer material by mold injection molding, preferably polyethylene (PE) or polypropylene (PP) material by mold injection molding, for example, the cover member is made of polypropylene (PP) or polyethylene (PE) material by mold injection molding, and the release member is made of low-density polyethylene (LDPE) material by mold injection molding.

[0027] Based on the structural characteristics and usage functions of the release member of the present invention, the inventors found that the material, model, and performance parameters of the release member are crucial to the use of the material storage and release device, especially the release success rate when the sealing sheet of the release member is broken, the size of the hand twisting force, and the smoothness of breaking the sealing sheet. It is related to the use quality and implementation effect of the material storage and release device. Preferably, the release member is made of low-density polyethylene (LDPE) material by mold injection molding, and the low-density polyethylene (LDPE) material has the following performance parameters: tensile strength 7.1~8.9MPa, elongation at break 50%~220%, and the performance parameters are measured by the national standard GB / T1040 or ASTM D638.

[0028] In particular, when prepared by mold injection molding, the injection molding gate of the release member is set on the inner wall or outer wall of the sealing piece. Preferably, the injection molding gate of the release member is set at the center position of the inner wall or the center position of the outer wall of the sealing piece, and most preferably, the injection molding gate of the release member is set at the center position of the outer wall of the sealing piece. Based on the structural characteristics of the release member of the present invention, the inventor found that when the injection molding process, the thickness of the thinning connection structure of the sealing piece, the structure size and other factors are the same, the injection molding gate of the release member is set at the center position of the inner wall or the center position of the outer wall of the sealing piece. The release member obtained by injection molding has a qualified rate of 100% for the key sealing structure between the sealing piece and the inner wall of the head end of the barrel structure connected by thinning. However, when the injection molding gate of the release member is set at other positions, the qualified rate of the key sealing structure of the release member is significantly reduced.

[0029] The container sealing device of the present invention can be used as an independent commodity. When in use, it is screwed on the neck opening of the container matched with it, and the material contained in the container sealing device is released into the container and mixed with the material in the container. Further, if necessary, an easy-to-remove film material can be used to seal the head end of the cover member of the container sealing device to facilitate the preservation of the product and enhance the sealing of the cavity tube structure. For example, an aluminum foil composite film is preferably used. After the release member is installed and sleeved on the outer wall of the cavity tube structure, the aluminum foil composite film can be sealed to the opening of the head end of the cover member by a hot pressing sealing method or an electromagnetic induction sealing method, so that the cavity tube structure and the release member are sealed in the independent space of the cover surrounding structure, which not only enhances the sealing of the material in the cavity tube structure, but also protects the hygiene and cleanliness of the cavity tube structure and the release member.

[0030] The container of the present invention includes a container having an open container neck and a main body chamber, and a container having threads on the outer wall of the container neck, such as a container bottle having an open neck and neck threads, a packaging bag having an open neck and neck threads, etc., including containers made of polymer materials, metals, glass or ceramics. Preferably, the container is a packaging bottle made of polymer materials, such as a plastic bottle made of polyethylene terephthalate (PET), polycarbonate (PC) or its derivatives, polystyrene (PS), polypropylene (PP) or polyethylene (PE).

[0031] Description of the concepts of the present invention related terms.

[0032] The packaging container refers to a container composition formed after a container sealing device is installed on the neck of a container, wherein the main chamber of the container can contain materials, and the container sealing device can contain other materials, and the two materials are independent of each other.

[0033] The concepts of "head end" and "tail end" described in the present invention, the container sealing device, the cover member, the release member, or their various structures, etc., the head end of them refers to the end closest to the bottom of the container when the container sealing device is installed on the container neck through the threaded structure of the cover member, and the other end of them is called the tail end.

[0034] The "buckle" etc. described in the present invention is a functional structure in the form of ribs, rib sheets or sheet structures, or a structure formed by a combination of these forms;

[0035] The "structure" mentioned in the present invention refers to the component of a member or structural unit, or the "structure" represents the inherent characteristic form set on the member or structural unit;

[0036] 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.

[0037] The container sealing device of the present invention can be obtained by assembling, snap-fitting, connecting, or welding the various structures or settings of the present invention by using separate parts when some structures are produced, such as by injection mold production, which are difficult, inefficient, and costly, or the injection mold is difficult to realize its structure, etc. Undoubtedly, the container sealing device of the present invention, no matter how it is assembled, installed, or assembled, belongs to the protection scope of the present invention.

[0038] Furthermore, the present invention also provides a packaging container, which is composed of the container sealing device of the present invention installed on a container neck with an opening, wherein the container includes a container neck with an opening and a main body chamber, and a container having threads on the outer wall of the container neck. The container sealing device is installed on the neck of the container to form a packaging container, and the threads of the cover member and the container neck are connected to each other by screwing the cover member of the container sealing device. Under the interaction of the threads of the two, the cavity structure further extends into the container neck, and the push piece structure of the release member is pushed by the mouth of the container opening toward the tail end of the cavity structure, so that the wall of the head end of the cavity structure breaks the thinning connection structure of the sealing piece of the release member, and pushes the sealing piece to the outside of the cavity structure, so that the material in the cavity structure is 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 sealing device is achieved, which is convenient and simple to use, and easy to install, fill and produce industrially.

[0039] In particular, the container sealing device of the present invention and the matching container are mutually matched packaging combinations, having the size of special or conventional matching containers, and can provide better product functions, experience, appropriate twisting force, and better material holding capacity, appearance, etc. For example, preferably: the inner diameter of the opening of the container neck is 24.5mm-26.5mm, and the inner diameter of the cavity structure of the container sealing device is 19.5mm-22mm; or,

[0040] The inner diameter of the opening of the container neck is 29.5 mm to 30.5 mm, and the inner diameter of the cavity structure of the container sealing device is 24 mm to 26 mm; or,

[0041] The inner diameter of the opening of the container neck is 21 mm to 22 mm, and the inner diameter of the cavity structure of the container sealing device is 16 mm to 18 mm.

[0042] Furthermore, the present invention also provides a packaging composition, which is composed of the container sealing device of the present invention, a container, and two materials, wherein the container includes a container neck with an opening and a main chamber, and the outer wall of the container neck is provided with a thread; the main chamber of the container accommodates one material, and the cavity structure of the cover member of the container sealing device accommodates another material, and the two materials are sealed independently, and preferably at least one of the two materials is a liquid material.

[0043] Preferably, the main chamber of the container contains a liquid material. Preferably, the material contained in the container sealing device is selected from solid materials, liquid materials, a mixture of solid and liquid, or a slurry; the solid material is preferably a solid powder material, a solid granular material, a pill material, a tablet material, and the solid granular material includes but is not limited to effervescent granules, fast-disintegrating granules, ordinary granules, blocks, amorphous blocks, etc. used in pharmacy, and the liquid material includes a water-based liquid material or a fat-soluble liquid material. For example, the water-based liquid material preferably includes water, an aqueous solution or aqueous suspension of carbohydrates, an aqueous solution or aqueous suspension of plant extracts, animal emulsions, aqueous emulsions of animal milk powder, aqueous solutions of plant proteins or aqueous emulsions of plant proteins, and the like.

[0044] Furthermore, the present invention provides a container sealing device and an assembly method of a packaging container thereof, the assembly method comprising:

[0045] (1) Providing the following components, including: a cover member and a release member;

[0046] (2) Assembly of the container sealing device: filling the material into the cavity structure of the cover member, installing and sleeve the release member on the outer wall of the cavity structure of the cover member, so that the material is sealed and stored in the cavity structure;

[0047] Alternatively, the release member is installed and sleeved on the outer wall of the cavity structure of the cover member, the material is filled into the cavity structure through the opening of the channel structure of the cover member, and then the opening of the channel structure is sealed so that the material is sealed and stored in the cavity structure, thereby forming the container sealing device described in the present invention.

[0048] Furthermore, the container sealing device is installed at the opening of the container neck, so that a packaging container consisting of the container sealing device and the container can be formed, wherein the container includes a container neck with an opening and a main body chamber, and a thread is arranged on the outer wall of the container neck;

[0049] The main body chamber of the container contains a first material, and the container sealing device contains a second material. Before the container sealing 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.

[0050] Furthermore, the container sealing device and its 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, medicine, medical equipment, sanitary products, cosmetics or daily necessities, especially in the packaging and storage of beverages, drinking wine, health food, special medical formula food, medicine, medical equipment, sanitary products, cosmetics or daily necessities containing liquid materials. For example, the container sealing device contains solid materials, or the container sealing device contains liquid materials, and the main chamber of the container contains liquid materials, etc.

[0051] Compared with the prior art, the container sealing device and packaging container of the present invention have the following innovative features:

[0052] First, the release member of the container sealing device of the present invention is made of a specific polymer material. During the application process, if the thickness of the thinned connecting structure is too thin, its sealing will be problematic. If the thickness of the thinned connecting structure is too thick, the force required for twisting and bursting will be very large. The present invention creatively selects a polymer material with a tensile strength of 7.1-8.9 MPa and a breaking elongation of 50%-220% to prepare the release member, which can not only meet the bottom line of the thickness of the thinned connecting structure for sealing, but also meet the smaller twisting force required for the thinned connecting structure to be burst. The feasibility of the sealing sheet when being burst and the qualified rate of bursting are significantly improved, the twisting force (torque) is appropriate, and the reliability is good. It can be used especially for the elderly, children, women and other people with small hand twisting force.

[0053] Secondly, with the container sealing device of the present invention, when using the mixture in the container, it is only necessary to open the seal on the channel structure without removing the entire material storage and release device from the neck of the container, thereby avoiding exposure of the inner core structure of the material storage and release device to the outside of the container, which may cause cross-contamination or accidental contamination of the mixture in the container.

[0054] Thirdly, a rib-shaped breakthrough structure is provided on the sealing piece of the cavity structure. The setting of the breakthrough structure is more conducive to the sealing piece being broken, and the breakthrough structure will be pressed first, so that the breaking force at this point is concentrated and enhanced, and the breaking process of the sealing piece is smoother and easier to achieve. Only a smaller screwing force is required to make the thinning connection structure of the sealing piece be broken first here. Once a breakthrough appears in the sealing piece, the subsequent breaking and opening of the sealing piece will be smoother; when the sealing piece is broken, the screwing force (torque) is appropriate and gentle, and the reliability is good. Especially for the elderly, children, women and other people with small hand screwing force, it can be used smoothly, and has a good sense of manual control.

[0055] Fourthly, the container sealing device of the present invention is exquisitely designed, properly matched, convenient to use, scientifically and reasonably released, reliable, stable, easy to operate and accurately controlled. When the container sealing device is rotated between the container neck, the material can be released, and the opening size of the sealing sheet is controllable when the material is released. It has accurate and stable operability and controllability, and can realize the smooth release of solid materials and viscous materials, especially amorphous block materials, larger solid materials or viscous materials, which can be smoothly released into the container.

[0056] Fifthly, the container sealing device of the present invention is simple to use, convenient and easy to operate. The material sealed independently in the container sealing device can be released into the main chamber of the container by simply twisting the container sealing device. Moreover, after the material is released into the main chamber of the container, the packaging container is in a sealed state as a whole, which meets the requirement that the contents still need to be sealed after mixing and the mixture needs to be further disposed, such as shaking evenly, standing, fermenting, settling, short-term storage or continued storage.

[0057] Sixth, it is easy for industrial mass production. There are only two container sealing devices, which are simple in composition and material filling operation, and it is easy to realize industrial mass production. No large buckle force is required during assembly, and the installed parts are tight and stable.

[0058] Seventhly, the innovative functional structure of the container sealing device of the present invention can satisfy the sealed storage and smooth release of materials in various forms such as solid powder or particles, liquid, amorphous blocks, high-viscosity liquid, soft viscous state, slurry or viscous substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 to Figure 3 1 is a schematic diagram of the structure of the container sealing device and the packaging container thereof in Example 1 of the present invention, wherein:

[0060] Figure 1 and Figure 2is a schematic diagram of the structure of the cover member, the release member and the container, which are views from two different directions;

[0061] Figure 3 The present invention is a cross-sectional structural diagram of a container sealing device composed of a cover member and a release member, which is assembled with a container, wherein the sealing sheet of the release member is not broken and the cavity structure of the container sealing device is still in a sealed state.

[0062] Figures 4 to 6 : is a schematic diagram of the structure of the container sealing device and its packaging container in Example 2 of the present invention, wherein:

[0063] Figure 4 and Figure 5 is a schematic diagram of the structure of the cover member, the release member, the seal and the container, which are views from two different directions;

[0064] Figure 6 The present invention is a cross-sectional structural diagram of a container sealing device composed of a cover member, a release member and a sealing member, and is assembled with a container, wherein the sealing sheet of the release member is not broken and the cavity structure of the container sealing device is still in a sealed state.

[0065] in, Figure 1 to Figure 6 Description of the mark in:

[0066] 1 cover member; 101 cover surrounding structure; 102 cavity tube structure; 103 thread structure A; 104 first buckle; 105 channel structure;

[0067] 11. Seals;

[0068] 2 release member; 201 cylinder structure; 202 sealing sheet; 203 thinning connection structure; 204 pulling structure; 205 push sheet structure; 206 second buckle; 207 breakthrough structure;

[0069] 3 container; 301 container neck; 302 main chamber; 303 thread structure B; 304 rim;

[0070] 4 first material; 5 second material. DETAILED DESCRIPTION

[0071] 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.

[0072] 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.

[0073] Embodiment 1. A container sealing device and a packaging container thereof.

[0074] refer to Figure 1 to Figure 3 As shown, the container sealing device provided in this embodiment is composed of a cover member 1 and a release member 2, wherein the cover member 1 has a cover surrounding structure 101 and a cavity tube structure 102, the cover surrounding structure 101 and the cavity tube structure 102 are connected together to form a ring-shaped structure, a thread structure A 103 is provided on the inner wall of the cover surrounding structure 101, the head end of the cavity tube structure 102 is open and the tail end is closed, and a first buckle 104 is provided on the outer wall of the cavity tube structure 102;

[0075] The release member 2 has a cylindrical structure 201, a second buckle 206 is arranged on the inner wall of the cylindrical structure 201, and a sealing sheet 202 is arranged at the head end of the cylindrical structure 201. The portion where the sealing sheet 202 is connected to the inner wall of the cylindrical structure 201 is provided with an inclined surface structure to reduce its thickness, and then connected to the inner wall of the cylindrical structure 201 to form a thinning connection structure 203, which can achieve a good sealing effect and facilitate the sealing sheet 202 to be smoothly broken; preferably, the thickness of the sealing sheet 202 is 0.8mm-1mm, and the thickness of the sealing sheet 202 connected to the inner wall of the cylindrical structure 201 is 0.17mm-0.2mm;

[0076] A push-piece structure 205 in the form of an annular sheet is disposed on the outer wall of the rear end of the cylinder structure 201;

[0077] A sheet-shaped pulling structure 204 connected to each other is provided between the sealing sheet 202 of the release member 2 and the inner wall of the cylinder structure 201. The pulling structure 204 can keep the sealing sheet 202 connected to the cylinder structure 202 of the release member 2 after the sealing sheet 202 is broken, and will not be separated from the cylinder structure 201.

[0078] As shown in the figure, a rib-shaped breakthrough structure 207 is provided on the inner wall of the sealing sheet 202 of the release member 2 and directly opposite to the pulling structure 204. The breakthrough structure 207 is more conducive to the wall body at the head end of the cavity structure 102 pressing the thinned connecting structure 203 of the sealing sheet 202 first, so that the bursting force at this point is enhanced, making the bursting process smoother and easier to achieve;

[0079] As shown in the figure, the sealing sheet 202 of the release member 2 is a stepped sheet structure, so that the sealing sheet 202 forms a shape with a height difference;

[0080] The first snap buckle 104 and the second snap buckle 206 can be interlocked together, so that the release member 2 is installed and sleeved on the outer wall of the cavity tube structure 102 of the cover member 1, and the opening of the cavity tube structure 102 is sealed. In addition, the first snap buckle 104 and the second snap buckle 206 are interlocked together, which can also stabilize the release member 2 and the cavity tube structure 102 of the cover member 1, ensuring that the release member 2 will not detach or fall off from the cavity tube structure 102 of the cover member 2 during use of the container sealing device.

[0081] The container 3 has an open container neck 301 and a main body chamber 302 , and a thread structure B 303 is provided on the container neck 301 .

[0082] Functions of the container sealing device of this embodiment: the material is filled into the cavity structure 102 through the opening at the head end of the cavity structure 102 of the cover member 1, the release member 2 is sleeved on the outer wall of the cavity structure 102, and the first buckle 104 and the second buckle 206 are engaged with each other, and the release member 2 can be installed and sleeved on the outer wall of the cavity structure 102 of the cover member 1, so that the material is sealed and stored in the cavity structure 102, and the container sealing device of this embodiment is formed;

[0083] When in use, the container sealing device is placed at the opening of the neck of the container 3, so that the cavity tube structure 102 and the release member 2 extend into the opening of the container neck 301, and the push piece structure 205 of the release member 2 contacts the edge 304 of the container opening, and the cover member 1 is screwed to connect the thread structure A 103 and the thread structure B 303 of the container neck 301 to each other. Under the interaction of the threads of the two, the cavity tube structure 102 further extends into the container neck 301, and the push piece structure 205 of the release member 2 is pushed toward the rear end of the cavity tube structure 102 by the edge 304 of the container opening, so that the wall of the head end of the cavity tube structure 102 presses the breakthrough structure 207, and then breaks the thinned connection structure 203 of the sealing sheet 202 of the release member 2, and pushes the sealing sheet 202 to the outside of the cavity tube structure 102, so that the material in the cavity tube structure 102 is released into the container 3 and mixed with the material in the container 3 to achieve the effect of mixing and blending.

[0084] Furthermore, since the sealing sheet 202 of the release member 2 has a stepped sheet structure, and the thinning connection structure 203, the breakthrough structure 207, and the pulling structure 204 are arranged, the bursting process of the sealing sheet 202 is smoother and easier to achieve, and after the sealing sheet 202 is burst, it remains connected to the cylindrical structure 201 of the release member 2 and will not detach from the cylindrical structure of the release member.

[0085] When the mixed material needs to be used, the cover member 1 only needs to be screwed in the opposite direction to loosen the threaded connection, so that the container sealing device is removed from the container neck 301, and the mixed material can be used.

[0086] Further, the container sealing device is placed at the opening of the neck of the container 3, so that the cavity structure 102 and the release member 2 extend into the opening of the container neck 301, and the push-piece structure 205 of the release member 2 contacts the edge 304 of the container opening, and the cover member 1 is screwed so that the thread structure A 103 of the cover member 1 and the thread structure B 303 of the container neck are connected to each other, so that the container sealing device is installed on the container neck 301 to form a packaging container.

[0087] Embodiment 2. A container sealing device and a packaging container thereof.

[0088] refer to Figures 4 to 6As shown, the container sealing device provided in this embodiment is composed of a cover member 1, a release member 2 and a sealing member 11, wherein the sealing member 11 is a threaded cap. The cover member 1 has a cover surrounding structure 101 and a cavity tube structure 102, the cover surrounding structure 101 and the cavity tube structure 102 are connected together to form a ring-shaped structure, a threaded structure A 103 is arranged on the inner wall of the cover surrounding structure 101, the head end of the cavity tube structure 102 is open, a first buckle 104 is arranged on the outer wall of the cavity tube structure 102, and a channel structure 105 is arranged at the tail end of the cavity tube structure 102, the channel structure 105 has an opening and is connected to the internal space of the cavity tube structure 102, or the channel structure 105 can be regarded as an extension of the cavity tube structure 102, as shown in the figure, a threaded structure is arranged on the outer wall of the channel structure 105, and the threaded cap as the sealing member 11 can be installed on the channel structure 105 to seal the opening of the channel structure 105.

[0089] The release member 2 has a cylindrical structure 201, a second buckle 206 is arranged on the inner wall of the cylindrical structure 201, and a sealing sheet 202 is arranged at the head end of the cylindrical structure 201. The portion where the sealing sheet 202 is connected to the inner wall of the cylindrical structure 201 is provided with an inclined surface structure to reduce its thickness, and then connected to the inner wall of the cylindrical structure 201 to form a thinning connection structure 203, which can achieve a good sealing effect and facilitate the sealing sheet 202 to be smoothly broken; preferably, the thickness of the sealing sheet 202 is 0.8mm-1mm, and the thickness of the sealing sheet 202 connected to the inner wall of the cylindrical structure 201 is 0.17mm-0.2mm;

[0090] A push-piece structure 205 in the form of an annular sheet is disposed on the outer wall of the rear end of the cylinder structure 201;

[0091] A sheet-shaped pulling structure 204 connected to each other is provided between the sealing sheet 202 of the release member 2 and the inner wall of the cylinder structure 201. The pulling structure 204 can keep the sealing sheet 202 connected to the cylinder structure 202 of the release member 2 after the sealing sheet 202 is broken, and will not be separated from the cylinder structure 201.

[0092] As shown in the figure, a rib-shaped breakthrough structure 207 is provided on the inner wall of the sealing sheet 202 of the release member 2 and directly opposite to the pulling structure 204. The breakthrough structure 207 is more conducive to the wall body at the head end of the cavity structure 102 pressing the thinned connecting structure 203 of the sealing sheet 202 first, so that the bursting force at this point is enhanced, making the bursting process smoother and easier to achieve;

[0093] As shown in the figure, the sealing sheet 202 of the release member 2 is a stepped sheet structure, so that the sealing sheet 202 is formed into a shape with a height difference;

[0094] The first snap buckle 104 and the second snap buckle 206 can be interlocked together, so that the release member 2 is installed and sleeved on the outer wall of the cavity tube structure 102 of the cover member 1, and the opening of the cavity tube structure 102 is sealed. In addition, the first snap buckle 104 and the second snap buckle 206 are interlocked together, which can also stabilize the release member 2 and the cavity tube structure 102 of the cover member 1, ensuring that the release member 2 will not detach or fall off from the cavity tube structure 102 of the cover member 2 during use of the container sealing device.

[0095] The container 3 has an open container neck 301 and a main body chamber 302 , and a thread structure B 303 is provided on the container neck 301 .

[0096] The functions of the container sealing device of this embodiment are as follows: the sealing member 11 is installed on the channel structure 105 of the cover member 1 to seal the opening of the channel structure 105, and the material is filled into the cavity structure 102 through the opening at the head end of the cavity structure 102 of the cover member 1, and the release member 2 is sleeved on the outer wall of the cavity structure 102, so that the first buckle 104 and the second buckle 206 are mutually buckled together, and the release member 2 can be installed and sleeved on the outer wall of the cavity structure 102 of the cover member 1, so that the material is sealed and stored in the cavity structure 102, and the container sealing device of this embodiment is formed;

[0097] When in use, the container sealing device is placed at the opening of the neck of the container 3, so that the cavity tube structure 102 and the release member 2 extend into the opening of the container neck 301, and the push piece structure 205 of the release member 2 contacts the edge 304 of the container opening, and the cover member 1 is screwed to connect the thread structure A 103 and the thread structure B 303 of the container neck 301 to each other. Under the interaction of the threads of the two, the cavity tube structure 102 further extends into the container neck 301, and the push piece structure 205 of the release member 2 is pushed toward the rear end of the cavity tube structure 102 by the edge 304 of the container opening, so that the wall of the head end of the cavity tube structure 102 presses the breakthrough structure 207, and then breaks the thinned connection structure 203 of the sealing sheet 202 of the release member 2, and pushes the sealing sheet 202 to the outside of the cavity tube structure 102, so that the material in the cavity tube structure 102 is released into the container 3 and mixed with the material in the container 3 to achieve the effect of mixing and blending.

[0098] Furthermore, since the sealing sheet 202 of the release member 2 has a stepped sheet structure, and the thinning connection structure 203, the breakthrough structure 207, and the pulling structure 204 are arranged, the bursting process of the sealing sheet 202 is smoother and easier to achieve, and after the sealing sheet 202 is burst, it remains connected to the cylindrical structure 201 of the release member 2 and will not detach from the cylindrical structure of the release member.

[0099] When the mixed material needs to be used, it is only necessary to open the sealing member 11 on the channel structure 105, and the container sealing device is still installed on the container neck, so that the mixed material can be used.

[0100] Further, the container sealing device is placed at the opening of the neck of the container 3, so that the cavity structure 102 and the release member 2 extend into the opening of the container neck 301, and the push-piece structure 205 of the release member 2 contacts the edge 304 of the container opening, and the cover member 1 is screwed so that the thread structure A 103 of the cover member 1 and the thread structure B 303 of the container neck are connected to each other, so that the container sealing device is installed on the container neck 301 to form a packaging container.

[0101] Example 3. Test on the pass rate of product sealing performance of release members.

[0102] For the container sealing device and packaging container thereof in the aforementioned embodiment 2, when the release member 2 is produced by using an injection mold, the injection gate is set at the center of the outer wall of the sealing sheet 202 .

[0103] A test was conducted to investigate the influence of different injection gate locations on the product qualification rate of the release member 2.

[0104] Test method: (1) The injection molding gate of the mold is set at the center of the outer wall of the sealing piece 202, and the release component product obtained by injection molding is set as A. The injection molding gate of the mold is set on the outer wall of the cylindrical structure 201 of the release component 2, and the release component product obtained by injection molding is set as B. The size, shape, structural form and dimensions, number of mold cavities, etc. of the release component A and the release component B are exactly the same. The thickness of the thinned connecting structure 203 at the connection between the sealing piece 202 and the cylindrical structure 201 is 0.2mm±0.015mm.

[0105] (2) Release component A and release component B are made of the same low-density polyethylene material, and the same injection molding temperature, injection molding pressure, injection molding time, holding time, etc. are used to produce 5,000 release components A and release components B respectively. Both injection molded products have complete structures, no glue defects, and no flash.

[0106] (3) Randomly select 500 release components A and release components B, and conduct product sealing tests on the key sealing structures between the sealing sheet and the cylinder structure that are connected by thinning to determine the product qualification rate.

[0107] (4) Test method: Use a leakage and sealing strength tester to test, pressurize the tail end opening of the release member 2 to 200 KPa, maintain the pressure underwater for 1 minute, and observe whether there is any leakage.

[0108] Test results: 500 release components A had 0 air leaks and a 100% sealing pass rate; 500 release components B had 207 air leaks and a 58.6% sealing pass rate.

[0109] It can be seen that the injection molding gate of the release member A is set at the center of the outer wall of the sealing sheet 202, and the sealing qualification rate of the product reaches 100%. Compared with setting the injection molding gate on the outer wall of the barrel structure 201, the sealing qualification rate of the product has a very significant difference.

[0110] Example 4. Tests on the torque required to rupture the sealing sheet of release members made of different materials and the rupture pass rate.

[0111] For the material storage and release device in the aforementioned embodiment 2, release components made of injection molding materials of different types were used to test the torque required for the sealing sheet of the release component to be ruptured, as well as the rupture qualification rate.

[0112] Test method: (1) The injection gate of the mold is set at the center of the outer wall of the sealing sheet 202. The thickness of the thinned connection structure 203 at the connection between the sealing sheet 202 and the cylindrical structure 201 is 0.2 mm ± 0.015 mm. The same injection molding temperature, injection molding pressure, injection molding time, holding time, etc. are used. Two different types of injection molding materials are used to prepare two release components C and release components D respectively. No breakthrough structure is set on the sealing sheet, wherein:

[0113] Release member C: made of low-density PE with a tensile strength of 7.9 MPa and a breaking elongation of 182%;

[0114] Release member D: Made of low-density PE with a tensile strength of 10.0 MPa and a breaking elongation of 600%.

[0115] (2) Test method: The same cap member 1 prepared in Example 2 was used and matched with the release member C and the release member D respectively. The material storage and release devices were screwed onto the same threaded bottle mouths respectively. The torque was tested using a torque meter with an accuracy greater than 0.1 Nm. The torque when the sealing sheets of the release members C and D were broken was observed. 50 groups were tested respectively and the torque average was taken.

[0116] (3) Qualified rate judgment standard: The qualified ones are those with a torque of less than 3.5 Nm to break the sealing sheet and a gap of more than 5 mm; the unqualified ones are those with a torque of more than 3.5 Nm and less than 6.0 Nm but unable to break the sealing sheet, or able to break the sealing sheet but with a gap of less than 5 mm.

[0117] (4) Test results:

[0118] Release member C: average torque 2.71Nm, bursting qualified rate 76%;

[0119] Release member D: average torque 3.44Nm~3.5Nm, bursting pass rate 32%.

[0120] It can be seen that the release member produced by injection molding of low-density PE with a tensile strength of 7.9 MPa and an elongation at break of 182% requires less torque to break the sealing sheet than the release member made of other low-density PE, and the qualified rate of breaking is much higher than that of the release member made of other low-density PE. It can be seen that the release member of the material storage and release device of the present invention selects a specific polymer material, which significantly improves the feasibility of breaking the sealing sheet and the qualified rate of breaking.

[0121] Example 5. Tests on the torque required for rupturing the sealing sheet of a release member having a rupture structure and the rupture pass rate.

[0122] For the material storage and release device in the aforementioned Example 2, a low-density PE injection molding with a tensile strength of 7.9 MPa and an elongation at break of 182% is used. A breakthrough structure is provided on the sealing sheet or not. The torque required for the sealing sheet of the release component to be broken is tested, as well as the breakthrough qualification rate test.

[0123] Test method: (1) The injection gate of the mold is set at the center of the outer wall of the sealing sheet 202. The thickness of the thinned connecting structure 203 at the connection between the sealing sheet 202 and the cylindrical structure 201 is 0.2 mm ± 0.015 mm. Low-density PE with a tensile strength of 7.9 MPa and a breaking elongation of 182% is used for injection molding. The same injection molding temperature, injection molding pressure, injection molding time, holding time, etc. are used to prepare two release components C and release components E respectively, wherein:

[0124] Release member C: made of low-density PE with a tensile strength of 7.9 MPa and a breaking elongation of 182%, and no breakthrough structure is set on the sealing sheet;

[0125] Release member E: It is made of low-density PE with a tensile strength of 7.9 MPa and a breaking elongation of 182%. A breakthrough structure is arranged on the sealing sheet, and the breakthrough structure is arranged at a position directly opposite to the pulling structure.

[0126] (2) Test method: The same cap member 1 prepared in Example 2 was used and matched with the release member C and the release member E respectively. The material storage and release devices were screwed onto the same threaded bottle mouth respectively. The torque was tested using a torque meter with an accuracy greater than 0.1 Nm. The torque when the sealing sheets of the release members C and E were broken was observed. 50 groups were tested respectively and the torque average was taken.

[0127] (3) Qualified rate judgment standard: The qualified ones are those with a torque of less than 3.5 Nm to break the sealing sheet and a gap of more than 5 mm; the unqualified ones are those with a torque of more than 3.5 Nm and less than 6.0 Nm but unable to break the sealing sheet, or able to break the sealing sheet but with a gap of less than 5 mm.

[0128] (4) Test results:

[0129] Release member C: average torque 2.71Nm, bursting qualified rate 76%;

[0130] Release member E: average torque 2.21Nm, bursting pass rate 100%.

[0131] It can be seen that the release member produced by injection molding of low-density PE with a tensile strength of 7.9MPa and a breaking elongation of 182%, and the release member with a breakthrough structure on the sealing sheet, the torque required to break the sealing sheet is much smaller than that of the release member without a breakthrough structure, and the qualified rate of breaking is much higher than that of the release member without a breakthrough structure. It can be seen that the breakthrough structure is provided on the sealing sheet of the release member of the material storage and release device of the present invention, which can significantly reduce the torque required for the sealing sheet to be broken, and significantly improve its qualified rate of breaking. The breaking process is smoother and easier to achieve, and only a small twisting force is required to easily break and open the sealing sheet. The breaking action of the sealing sheet is smoother, the twisting force (torque) is appropriate and gentle, and the twisting smoothness is good, especially for the elderly, children, women and other people with small hand twisting force.

[0132] Example 6. A packaging composition comprising two independently sealed materials.

[0133] A packaging composition, the packaging composition comprises a container sealing device, a container 3, a first material 4, and a second material 5, wherein the container 3 comprises a container neck 301 having an opening and a main body chamber 302, and a threaded structure is arranged on the outer wall of the container neck 301, the container sealing device adopts the container sealing device described in Example 1 or Example 2, and the container sealing device is installed on the neck of the container 3;

[0134] The first material 4 is in the main chamber 302 of the container, and the second material 5 is in the cavity structure 102 of the cover member of the container sealing device;

[0135] At least one of the first material 4 and the second material 5 is a liquid material, preferably both the first material 4 and the second material 5 are liquids, or the first material 4 is a liquid material and the second material 5 is a solid material, or the first material 4 is a solid material and the second material 5 is a liquid material.

[0136] Example 7. Application.

[0137] The use of any one of the container sealing devices or packaging containers described in Example 1 or Example 2, or the packaging composition described in Example 6, 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.

Claims

1. A container sealing device, comprising a cover member and a release member, characterized in that: The container has an open container neck and a main chamber, and the container neck is provided with threads; The cover member comprises a cover surrounding structure and a cavity tube structure, wherein the cover surrounding structure and the cavity tube structure are connected together to form an annular tube structure, and a thread is arranged on the inner wall of the cover surrounding structure; The head end of the cavity tube structure is open, and a first buckle is provided on the outer wall of the cavity tube structure; The release member has a cylindrical structure, a second buckle is arranged on the inner wall of the cylindrical structure, a sealing sheet is arranged at the head end of the cylindrical structure, a portion where the sealing sheet is connected to the inner wall of the cylindrical structure is provided with an inclined surface structure to reduce its thickness, and then connected to the inner wall of the cylindrical structure to form a thinning connection structure, and a push sheet structure in the form of an annular sheet is arranged on the outer wall of the tail end of the cylindrical structure; A sheet-shaped pulling structure connected to each other is arranged between the sealing sheet of the release member and the inner wall of the cylindrical structure of the release member, and a rib-shaped breaking structure is arranged on the inner wall of the sealing sheet and at a position directly opposite to the pulling structure; The first buckle and the second buckle can be buckled together, so that the cylinder structure of the release member is installed and sleeved on the outer wall of the cavity structure of the cover member, and the opening of the cavity structure is sealed; The release member is made of low-density polyethylene material through mold injection molding, and the low-density polyethylene material has the following performance parameters: tensile strength 7.1-8.9 MPa, elongation at break 50%-220%; The container sealing device can be placed at the opening of the container neck, so that the cavity tube structure and the release member extend into the opening of the container neck, and the push-piece structure of the release member contacts the edge of the container opening, and the threads arranged on the inner wall of the cover surrounding structure and the threads of the container neck can be connected to each other. Through the screwing force of the threads, the wall of the head end of the cavity tube structure is pressed against the breakthrough structure, and then the thinned connection structure of the sealing sheet of the release member is broken, and the sealing sheet is pushed to the outside of the cavity tube structure.

2. The container sealing device according to claim 1, characterized in that: The tail end of the cavity structure is closed; Alternatively, a channel structure connected to the internal space of the cavity tube structure is provided at the tail end of the cavity tube structure, the channel structure has an opening or is in an opening shape, and a seal can be installed on the channel structure to seal the opening of the channel structure, and the seal includes a sealing cover, a sealing film or a sealing plug.

3. The container sealing device according to claim 1, characterized in that: The sealing sheet of the release member is in a stepped sheet structure, so that the sealing sheet forms a shape with a height difference.

4. The container sealing device according to claim 1, characterized in that: The release member is prepared by mold injection molding, wherein the injection gate of the release member is arranged at the center position of the inner wall or the center position of the outer wall of the sealing sheet; The thickness of the sealing sheet is 0.75 mm to 1.2 mm, and the thickness of the sealing sheet at the connection with the inner wall of the cylinder structure is 0.06 mm to 0.45 mm.

5. A release member for a container sealing device, characterized in that: The release member is a cylindrical structure with an open tail end, and a second buckle is provided on the inner wall of the cylindrical structure; The head end of the release member is provided with a sealing sheet, the portion where the sealing sheet is connected to the inner wall of the cylinder structure is provided with an inclined surface structure to reduce its thickness, and then connected to the inner wall of the cylinder structure to form a thinned connection structure, and the outer wall of the tail end of the cylinder structure is provided with a push sheet structure in the form of an annular sheet; A sheet-shaped pulling structure connected to each other is arranged between the sealing sheet of the release member and the inner wall of the cylindrical structure of the release member, and a rib-shaped breaking structure is arranged on the inner wall of the sealing sheet and at a position directly opposite to the pulling structure; The second buckle and the first buckle can be buckled together, so that the cylinder structure of the release member is installed and sleeved on the outer wall of the cavity structure of the cover member, and the opening of the cavity structure is sealed; The release member is made of low-density polyethylene material through mold injection molding, and the low-density polyethylene material has the following performance parameters: tensile strength 7.1-8.9 MPa, elongation at break 50%-220%.

6. A packaging container, characterized in that: The packaging container is composed of the container sealing device according to claim 1 and a container, the container includes a container neck with an opening and a main body chamber, and a thread is provided on the outer wall of the container neck, the thread of the cover member of the container sealing device and the thread of the container neck can be connected to each other, and the container sealing device is installed on the container neck.

7. The container sealing device according to claim 1 or the packaging container assembling method according to claim 6, characterized in that: The assembly method comprises: (1) Providing the following components, including: a cover member and a release member; (2) Assembly of the container sealing device: filling the material into the cavity structure of the cover member, installing and sleeve the release member on the outer wall of the cavity structure of the cover member, so that the material is sealed and stored in the cavity structure; Alternatively, the release member is installed and sleeved on the outer wall of the cavity structure of the cover member, the material is filled into the cavity structure through the opening of the channel structure of the cover member, and then the opening of the channel structure is sealed to seal and store the material in the cavity structure.

8. Use of the packaging container according to claim 6 in the preparation or packaging and storage of the following products, characterized in that: Used for food, medicine, medical equipment and sanitary products containing liquid ingredients.

9. A packaging composition, characterized in that: The packaging composition is composed of two materials, the container sealing device according to claim 1, and a container, wherein the container comprises a container neck having an opening and a main body chamber, and a thread is arranged on the outer wall of the container neck; The main body chamber of the container contains one material, and the cavity structure of the cover component of the container sealing device contains another material.

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