Miniaturized storage bottle cap and packaging bottle

Abstract

The utility model relates to the field of food packaging, and provides a small storage bottle cap and a packaging bottle. The miniaturized storage bottle cap comprises an upper cap, a middle cap, a lower cap and a membrane cutting piece, the middle cover comprises a cylindrical inner cavity channel, the middle cover is provided with a middle cover upper opening and a middle cover lower opening, the diaphragm cutting piece is arranged in the inner cavity channel, the upper cover is connected to the outer side of the middle cover upper opening, and the lower cover is connected to the outer side of the middle cover lower opening; according to the embodiment, the overall size of the middle cap and the small storage bottle cap is small, dead corners of the middle cap can be reduced, assembly sterilization operation is facilitated, materials used for the middle cap are reduced, and cost is saved. In addition, the dry-wet separation effect can be achieved, it is guaranteed that the taste and effect of the product are still kept within the shelf life, smooth adding of sensitive substances is achieved, the shelf life of the product is effectively prolonged, and the good quality of the product is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of food packaging, in particular to a miniaturized storage bottle cap and a packaging bottle. Background Art

[0002] Bottle caps are very common items in daily life. The main function of existing bottle caps is to seal the beverage in the bottle to prevent it from spoiling. According to different functions, there are bottle caps with different shapes and different operating methods. For example, the cap of a mineral water bottle is round and is opened by twisting; the cap of a can is ring-shaped and is opened by pulling; the cap of a canned meat bottle has no fixed shape and is opened by pulling; the cap of a beer bottle is opened by prying.

[0003] Bottle caps are an important part of food and beverage packaging, and are also the first place where consumers come into contact with products. Bottle caps have the function of keeping the contents of the product sealed, and also have the functions of anti-theft opening and safety. Therefore, they are widely used in bottled products. Therefore, bottle caps are the upstream industries of food, beverage, wine, chemical industry, and pharmaceutical industry, and are key products of bottle container packaging. In the early development of bottle caps, cork materials, tinplate crown caps and twist-off caps were used. So far, aluminum long-neck aluminum caps, carbonated beverage aluminum caps, hot-filled aluminum caps, injection aluminum caps, medicine caps, flip-open ring caps, safety button claw caps and plastic bottle caps have been developed.

[0004] At present, a lid with a separate sealed storage space has appeared on the beverage market, which includes an upper cover, a middle cover and a lower cover. The principle of use is: fill the basic raw materials (such as solid powder, concentrated liquid, medicine or probiotics, etc.) into the sealed storage space of the upper cover and the middle cover to store the basic raw materials, then connect the lower cover with the middle cover, and the container under the cover that matches the cover is filled with pure water or a basic solution for mixing with or dissolving the basic raw materials. When drinking, the storage space is opened through the switch mechanism set on the cover, and the basic raw materials are put into the container below. After being fully shaken, it can be directly drunk.

[0005] However, the middle cover of the current storage bottle cap is large in size, has a high manufacturing cost, has a dead corner area, and the sterilization operation is complicated.

[0006] In view of this, the present invention is proposed to overcome the defects of the prior art. Utility Model Content

[0007] The utility model aims to provide a miniaturized storage bottle cap and packaging bottle, which can effectively reduce the volume of the middle cover by embedding the middle cover and reducing the dead angle area, thereby realizing the miniaturization of the bottle cap structure and reducing the production cost.

[0008] The embodiment of the utility model is achieved as follows:

[0009] In a first aspect, the utility model provides a miniaturized storage bottle cap, which comprises an upper cover, a middle cover, a lower cover and a membrane cutting piece;

[0010] The middle cover comprises a cylindrical internal cavity, the middle cover has an upper opening and a lower opening, the membrane cutting piece is arranged in the internal cavity, the upper cover is connected to the outer side of the upper opening of the middle cover, and the lower cover is connected to the outer side of the lower opening of the middle cover;

[0011] The upper cover comprises an upper cover body and a driving member arranged in the upper cover body for driving the membrane cutting member to move up and down;

[0012] The lower cover comprises a lower cover body, an inner plug ring and a sealing film. The lower cover body is a vertically arranged cylindrical structure with a top opening and a bottom opening. The inner plug ring is integrally formed with the lower cover body and is arranged in the lower cover body. The inner plug ring extends along the top of the lower cover body toward the bottom. An installation channel for inserting the bottle mouth of the bottle body is formed between the outer wall of the inner plug ring and the inner wall of the lower cover body. The sealing film is connected to the bottom of the inner plug ring.

[0013] The upper cover, the middle cover and the sealing film together form a storage space for accommodating basic raw materials, and when the lower cover and the middle cover are assembled, the top surface of the sealing film is in contact with the bottom surface of the middle cover;

[0014] The bottom of the membrane cutting piece is provided with cutting teeth, and the inner wall of the membrane cutting piece is provided with a sliding column, which abuts against the driving piece and can move downward along the driving piece to cut the sealing film when the upper cover is screwed open.

[0015] In an optional embodiment, the inner wall of the upper cover is provided with an upper cover internal thread, the outer wall of the upper opening of the middle cover is provided with a middle cover external thread, and the upper cover is threadedly connected to the outer wall of the upper opening of the middle cover.

[0016] In an optional embodiment, the inner plug ring is threadedly connected, snap-fitted or clearance-fitted with the outer wall of the lower opening of the middle cover.

[0017] In an optional embodiment, the inner wall of the middle cover is provided with a guide member for guiding the rotation of the diaphragm cutting member, the diaphragm cutting member is provided with a guide groove cooperating with the guide member, and the guide member is clamped in the guide groove.

[0018] In an optional embodiment, a storage sealing film is provided at the position of the lower opening of the middle cover.

[0019] In an optional embodiment, there is a gap of no more than 3 mm between the storage sealing film and the sealing film.

[0020] In an optional embodiment, the storage sealing film and the sealing film respectively include a PET outer layer, an Al middle layer and a PE inner layer which are overlapped and connected in sequence.

[0021] In an optional embodiment, a first anti-theft ring is connected between the bottom of the upper cover and the top of the lower cover, and a second anti-theft ring is connected to the bottom of the lower cover.

[0022] In an optional embodiment, the thickness of the inner plug ring is 0.5 mm-2 mm;

[0023] And / or, the extension length of the inner plug ring is 8mm-12mm;

[0024] And / or, the inner plug ring is made of HDPE.

[0025] In a second aspect, the utility model provides a packaging bottle, which includes the miniaturized storage bottle cap as described in any one of the aforementioned embodiments, the packaging bottle includes a bottle body and a bottle mouth portion located at the opening of the bottle body, and the bottle mouth portion is inserted into the installation channel of the miniaturized storage bottle cap.

[0026] The beneficial effects of the embodiment of the utility model are as follows: the miniaturized storage bottle cap provided by the embodiment has the middle cover built-in, the upper part of the middle cover is connected to the upper cover and is located inside the upper cover, and the lower part of the middle cover is connected to the lower cover and is located inside the lower cover. Through the above arrangement, the volume of the middle cover and the miniaturized storage bottle cap as a whole is small, which is conducive to reducing the dead angle of the middle cover, facilitating the component sterilization operation, reducing the material used in the middle cover, and saving costs. In addition, the embodiment can achieve the effect of dry-wet separation, ensure that the taste and efficacy of the product are still maintained during the shelf life, realize the smooth addition of sensitive substances, effectively extend the shelf life of the product, and ensure the good quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic structural diagram of a miniaturized storage bottle cap provided by an embodiment of the utility model;

[0029] Figure 2 A cross-sectional view of the upper cover of the standardized storage bottle cover provided by the embodiment of the utility model;

[0030] Figure 3A schematic diagram of the structure of the middle cover of the standardized storage bottle cover provided by the embodiment of the utility model;

[0031] Figure 4 A schematic diagram of the structure of the lower cover of the standardized storage bottle cover provided by the embodiment of the utility model;

[0032] Figure 5 A cross-sectional view of the lower cover of the standardized storage bottle cover provided by the embodiment of the utility model;

[0033] Figure 6 A schematic structural diagram of a membrane cutting piece of a standardized storage bottle cap provided by an embodiment of the utility model;

[0034] Figure 7 A cross-sectional view of a membrane cut piece of a molded storage bottle cap provided in an embodiment of the utility model.

[0035] Icons: 100-miniaturized storage bottle cap; 110-upper cover; 111-upper cover body; 112-driving member; 113-inner thread of upper cover; 114-first anti-theft ring; 115-anti-theft positioning protrusion of upper cover; 116-first connection point; 120-middle cover; 121-upper opening of middle cover; 122-lower opening of middle cover; 123-external thread of middle cover; 124-internal cavity; 125-storage space; 126-guide member; 130-lower cover; 131-lower cover body; 132-inner plug ring; 133-sealing film; 134-installation channel; 135-second anti-theft ring; 136-inner thread of lower cover; 137-anti-slip convex strip; 140-membrane cutting member; 141-cutting teeth; 142-sliding column; 143-notch; 144-guide groove. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] First embodiment

[0043] Please refer to Figure 1 This embodiment provides a miniaturized storage bottle cap 100 , which includes an upper cover 110 , a middle cover 120 , a lower cover 130 and a membrane cutting piece 140 .

[0044] (1) The specific structure of the upper cover 110 is as follows:

[0045] See also Figure 2The upper cover 110 includes an upper cover body 111 and a driving member 112 disposed in the upper cover body 111 for driving the diaphragm cutting member to move up and down. The upper cover body 111 is a cylindrical structure with a top seal and a bottom opening arranged vertically. The driving member 112 is connected to the inner side of the top of the upper cover body 111, and the driving member 112 is arranged in an arc shape along the direction from the top to the bottom of the upper cover 110. Specifically, the driving member 112 in this embodiment is quasi-triangular, wherein the first side is connected to the top inner wall of the upper cover body 111 in an arc shape, the second side is perpendicular to the top inner wall of the upper cover body 111 and extends in a direction away from the top of the upper cover body 111, and the third side is connected from the first side to the top of the second side in an arc shape, and the diaphragm cutting member 140 moves on the third side. There are multiple driving members 112 in this embodiment, and they are arranged circumferentially. The number of driving members 112 can be 2-6, for example.

[0046] The inner wall of the upper cover body 111 is provided with an upper cover internal thread 113, and the upper cover internal thread 113 is used to connect with the middle cover 120. The bottom of the upper cover body 111 is provided with a first anti-theft ring 114, and the inner wall of the first anti-theft ring 114 is provided with a plurality of upper cover anti-theft positioning protrusions 115. During the production process of the upper cover 110, the top of the first anti-theft ring 114 is connected to the bottom edge of the upper cover body 111 through a plurality of first connection points 116. The first anti-theft ring 114 and the upper cover body 111 are integrally formed, and then an intermittent ring cutting knife is used for ring cutting, so as to form a plurality of first connection points 116 at the connection position of the first anti-theft ring 114 and the upper cover body 111. The setting of the plurality of first connection points 116 can ensure the connection between the first anti-theft ring 114 and the upper cover body 111, and at the same time, it can also be used to judge whether the product is complete or has been opened. Specifically, the first anti-theft ring 114 is disposed between the upper cover body 111 and the lower cover body 131 .

[0047] (2) The specific structure of the middle cover 120 is as follows:

[0048] See also Figure 3 The middle cover 120 includes a cylindrical internal cavity 124, the middle cover 120 has a middle cover upper opening 121 and a middle cover lower opening 122, and the upper cover 110 is connected to the outer side of the middle cover upper opening 121. Specifically, in this embodiment, the outer wall of the middle cover upper opening 121 is provided with a middle cover external thread 123, and the middle cover external thread 123 cooperates with the upper cover internal thread 113 provided by the upper cover 110 to realize the threaded connection between the upper cover 110 and the outer wall of the middle cover upper opening 121.

[0049] The lower cover 130 is connected to the outer side of the lower opening 122 of the middle cover. There are many ways to connect the lower cover 130 and the middle cover 120, including but not limited to threaded connection, snap connection or clearance fit, etc. In this embodiment, the lower cover 130 and the middle cover 120 are preferably clearance fit, and the lower part of the middle cover 120 is smooth and directly inserted into the inner plug ring 132 of the lower cover 130. The size matching of the inner plug ring 132 and the middle cover 120 is used to realize the connection between the lower cover 130 and the middle cover 120.

[0050] The inner wall of the middle cover 120 is provided with a guide member 126 for guiding the film cutting member to rotate. The structure of the guide member 126 is specifically a columnar protrusion, which can cooperate with the guide groove 144 provided on the film cutting member. The guide member 126 is clamped in the guide groove 144. The setting of the guide member 126 can make the film cutting member rotate while moving downward to cut, so as to achieve circumferential cutting of the sealing film 133.

[0051] (3) The specific structure of the lower cover 130 is as follows:

[0052] See also Figure 4 and Figure 5 The lower cover 130 includes a lower cover body 131, an inner plug ring 132 and a sealing film 133. The lower cover body 131 is a vertically arranged cylindrical structure with a top opening and a bottom opening. The inner plug ring 132 is integrally formed with the lower cover body 131 and is arranged in the lower cover body 131. The inner plug ring 132 extends along the top of the lower cover body 131 toward the bottom. An installation channel 134 for inserting the bottle mouth of the bottle body is formed between the outer wall of the inner plug ring 132 and the inner wall of the lower cover body 131. The sealing film 133 is connected to the bottom of the inner plug ring 132; the upper cover 110, the middle cover 120 and the sealing film 133 together form a storage space 125 for accommodating basic raw materials. When the lower cover 130 and the middle cover 120 are assembled, the top surface of the sealing film 133 is in contact with the bottom surface of the middle cover 120.

[0053] The bottom of the lower cover 131 is connected with a second anti-theft ring 135, and the processing method of the second anti-theft ring 135 is similar to that of the first anti-theft ring 114, which can determine whether the product is complete or has been opened. It should be understood that the inner wall of the lower cover 131 is provided with a lower cover internal thread 136, which is used to cooperate with the external thread of the bottle mouth. The outer wall of the lower cover 131 is also provided with a plurality of anti-skid convex strips 137, which are vertically arranged, and can increase the friction of the lower cover 131 when the lower cover 131 is screwed to open the lower cover 131 and the bottle body, so as to facilitate easier opening of the lower cover 131 and the bottle body.

[0054] The thickness of the inner plug ring 132 is 0.5 mm to 2 mm, and / or the extension length of the inner plug ring 132 is 8 mm to 12 mm; and / or the material of the inner plug ring 132 is HDPE. In this embodiment, by limiting the thickness, extension length and material of the inner plug ring 132, the inner plug ring 132 can be deformed within a certain range, so that the lower half of the middle cover 120 is easily inserted into the inner plug ring 132, so as to achieve better sealing of the lower half of the middle cover 120.

[0055] The sealing film 133 includes a PET outer layer, an Al middle layer and a PE inner layer which are overlapped and connected in sequence.

[0056] In this embodiment, only one sealing film 133 is provided at the bottom of the inner plug ring 132 of the lower cover 130 to achieve single-layer sealing. It should be understood that in other embodiments of the utility model, a storage sealing film (not shown) can also be provided at the position of the lower opening 122 of the middle cover, and double-layer sealing is achieved by using the storage sealing film and the sealing film 133, wherein when a storage sealing film is provided at the position of the lower opening 122 of the middle cover, the storage sealing film and the sealing film 133 are in contact or there is a gap of no more than 3 mm between the storage sealing film and the sealing film 133. By limiting the gap between the storage sealing film and the sealing film 133, the film cutting piece 140 can simultaneously cut the storage sealing film and the sealing film 133 during cutting. In addition, the structure of the storage sealing film is the same as that of the sealing film 133, and the storage sealing film includes a PET outer layer, an Al middle layer and a PE inner layer that are overlapped and connected in sequence.

[0057] (4) The specific structure of the membrane cutting member 140 is as follows:

[0058] See also Figure 6 and Figure 7 The diaphragm cutting piece 140 is arranged in the internal cavity 124 of the middle cover 120. The diaphragm cutting piece 140 is a cylindrical structure with top opening and bottom opening. A cutting tooth 141 is arranged at the bottom of the diaphragm cutting piece 140. A sliding column 142 is arranged on the inner wall of the diaphragm cutting piece 140 near the top. The sliding column 142 abuts against the driving piece 112, and can move downward along the driving piece 112 to cut the sealing film 133 when the upper cover 110 is screwed open.

[0059] In this embodiment, the cutting teeth 141 of the diaphragm cutting piece 140 are arranged along the circumference of the diaphragm cutting piece 140, and there is a portion of the circumference of the diaphragm cutting piece 140 without the cutting teeth 141, thereby forming a notch 143, so that after the cutting teeth 141 cut the sealing film 133 along the circumference, there is a portion of the sealing film 133 that is not cut, so that the sealing film 133 will not fall into the bottle body after opening, thereby improving the consumer's usage experience.

[0060] The inner wall of the middle cover 120 is provided with a guide member 126 for guiding the rotation of the diaphragm cutting member, and the diaphragm cutting member is provided with a guide groove 144 that cooperates with the guide member 126. The guide member 126 on the inner wall of the middle cover 120 is clamped in the guide groove 144. When the upper cover 110 is screwed, the diaphragm cutting member moves downward under the drive member 112, and each guide groove 144 moves until the corresponding protrusion is in the guide groove 144. Each guide groove 144 is clamped outside the corresponding guide member 126 to move the diaphragm cutting member along the extension direction of the guide groove 144.

[0061] The working principle of the miniaturized storage bottle cap 100 is as follows: the basic material is sealed in the storage space 125 formed between the upper cover 110, the middle cover 120 and the sealing film 133. When the miniaturized storage bottle cap 100 is connected to the bottle body, the outer thread of the bottle mouth of the bottle body cooperates with the lower cover inner thread 136 of the lower cover 130 to achieve a sealed connection. In this embodiment, the lower cover 130 uses the gap between the inner plug ring 132 and the inner wall of the lower cover body 131 to form an installation channel 134. The bottle mouth of the bottle body is inserted into the installation channel 134 to achieve installation and sealing. The sealing film 133 connected to the bottom of the inner plug ring 132 can seal the bottle mouth. At the same time, the sealing film 133 can also seal the storage space 125. When in use, the upper cover 110 is twisted to the right to open, and the sliding column 142 moves downward along the driving member 112 to cut the sealing film 133. At this time, the storage space 125 is opened, and the basic material leaks from the storage space 125 into the bottle body to complete the opening.

[0062] Second embodiment

[0063] This embodiment provides a packaging bottle, which includes the miniaturized storage bottle cap 100 provided in the first embodiment. In addition, the packaging bottle also includes a bottle body and a bottle mouth located at the opening of the bottle body, and the bottle mouth is inserted into the installation channel 134 of the miniaturized storage bottle cap 100 that can exhaust and release pressure.

[0064] Since the structure of the bottle body in this embodiment is roughly the same as that of the existing bottle body, its bottle mouth is also roughly the same as that of the existing bottle body. Specifically, the bottle mouth is provided with an external bottle mouth thread, which can be matched with the lower cover internal thread 136 on the inner wall of the lower cover body 131 to achieve a threaded connection between the lower cover body 131 and the bottle mouth, and also facilitate the lower cover body 131 to be opened or closed when it is rotated along the lower cover internal thread 136. Correspondingly, the bottle mouth is also provided with an anti-theft ring and a bottom protrusion, and a bottle mouth positioning groove is formed between the anti-theft ring and the bottom protrusion, and the bottle mouth positioning groove is used to accommodate the second anti-theft ring 135, so that the second anti-theft ring 135 can rotate in the bottle mouth positioning groove but cannot move up and down. When the rotational force is greater than the connection force of the multiple second connection points between the lower cover body 131 and the second anti-theft ring 135, the lower cover body 131 is separated from the second anti-theft ring 135, thereby opening the lower cover body 131, and the anti-theft ring of the lower cover 130 remains in the bottle mouth positioning groove of the bottle body.

[0065] Based on the conventional bottle structure, this embodiment uses the miniaturized storage bottle cap 100 in the first embodiment as the sealing structure of the bottle body, which can not only achieve the basic sealing function, but also achieve the miniaturization of the bottle cap structure, reduce the dead angle of the middle cap 120, facilitate the component sterilization operation, reduce the material of the middle cap 120, and save costs. In addition, this embodiment can achieve the effect of dry-wet separation, ensure that the taste and efficacy of the product are still maintained during the shelf life, realize the smooth addition of sensitive substances, effectively extend the shelf life of the product, and ensure the good quality of the product.

[0066] To sum up, the miniaturized storage bottle cap 100 provided in this embodiment has the middle cover 120 built-in, the upper part of the middle cover 120 is connected to the upper cover 110 and is located in the upper cover 110, and the lower part of the middle cover 120 is connected to the lower cover 130 and is located in the lower cover 130. Through the above arrangement, the overall volume of the middle cover 120 and the miniaturized storage bottle cap 100 is small, which is beneficial to reducing the dead angle of the middle cover 120, facilitating the sterilization operation of the components, reducing the material used for the middle cover 120, and saving costs.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A miniaturized storage bottle cap, characterized in that: It includes an upper cover, a middle cover, a lower cover and a diaphragm cutting piece; The middle cover comprises a cylindrical internal cavity, the middle cover has an upper opening and a lower opening, the membrane cutting piece is arranged in the internal cavity, the upper cover is connected to the outer side of the upper opening of the middle cover, and the lower cover is connected to the outer side of the lower opening of the middle cover; The upper cover comprises an upper cover body and a driving member arranged in the upper cover body for driving the membrane cutting member to move up and down; The lower cover comprises a lower cover body, an inner plug ring and a sealing film. The lower cover body is a vertically arranged cylindrical structure with a top opening and a bottom opening. The inner plug ring is integrally formed with the lower cover body and is arranged in the lower cover body. The inner plug ring extends along the top of the lower cover body toward the bottom. An installation channel for inserting the bottle mouth of the bottle body is formed between the outer wall of the inner plug ring and the inner wall of the lower cover body. The sealing film is connected to the bottom of the inner plug ring. The upper cover, the middle cover and the sealing film together form a storage space for accommodating basic raw materials, and when the lower cover and the middle cover are assembled, the top surface of the sealing film is in contact with the bottom surface of the middle cover; The bottom of the membrane cutting piece is provided with cutting teeth, and the inner wall of the membrane cutting piece is provided with a sliding column, which abuts against the driving piece and can move downward along the driving piece to cut the sealing film when the upper cover is screwed open.

2. The miniaturized storage bottle cap according to claim 1, characterized in that: The inner wall of the upper cover is provided with an upper cover internal thread, the outer wall of the upper opening of the middle cover is provided with a middle cover external thread, and the upper cover is threadedly connected with the outer wall of the upper opening of the middle cover.

3. The miniaturized storage bottle cap according to claim 1, characterized in that: The inner plug ring is threadedly connected, snap-fitted or clearance-fitted with the outer wall of the lower opening of the middle cover.

4. The miniaturized storage bottle cap according to claim 1, characterized in that: The inner wall of the middle cover is provided with a guide member for guiding the rotation of the diaphragm cutting member, the diaphragm cutting member is provided with a guide groove matched with the guide member, and the guide member is clamped in the guide groove.

5. The miniaturized storage bottle cap according to claim 1, characterized in that: A storage sealing film is arranged at the position of the lower opening of the middle cover.

6. The miniaturized storage bottle cap according to claim 5, characterized in that: There is a gap of no more than 3 mm between the storage sealing film and the sealing film.

7. The miniaturized storage bottle cap according to claim 5, characterized in that: The storage sealing film and the sealing film respectively include a PET outer layer, an Al middle layer and a PE inner layer which are overlapped and connected in sequence.

8. The miniaturized storage bottle cap according to any one of claims 1 to 7, characterized in that: A first anti-theft ring is connected between the bottom of the upper cover and the top of the lower cover, and a second anti-theft ring is connected to the bottom of the lower cover.

9. The miniaturized storage bottle cap according to any one of claims 1 to 7, characterized in that: The thickness of the inner plug ring is 0.5mm-2mm. And / or, the extension length of the inner plug ring is 8mm-12mm; And / or, the inner plug ring is made of HDPE.

10. A packaging bottle, characterized in that: It comprises the miniaturized storage bottle cap according to any one of claims 1 to 9, wherein the packaging bottle comprises a bottle body and a bottle mouth portion located at the opening of the bottle body, and the bottle mouth portion is inserted into the installation channel of the miniaturized storage bottle cap.

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