Safe sealing bottle cap assembly

Abstract

The utility model belongs to the field of beverage bottles, and relates to a safe sealing bottle cap assembly which comprises a bottle cap, a stock bin and a skirt edge, the stock bin is of an internal hollow structure and used for storing seasonings, the bottle cap is used for covering the upper portion of the stock bin, the skirt edge is arranged on the periphery of the stock bin and connected with a bottle body, and the interior of the stock bin is divided into an upper portion and a lower portion through a composite film. The material bin is used for storing seasonings, the lower portion of the material bin is a connecting cavity used for being connected with a bottle opening of a bottle body and providing a channel for the seasonings to enter the bottle body, the composite film is fused and combined with the film sealing ring in the middle in the material bin in a heat sealing mode, and the composite film is of a three-layer structure. And when the temperature changes or the stock bin deforms due to stress, the stock bin can be kept stable, and the problem of cracking is difficult to occur. And the safety of the product can be protected to a great extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of beverage bottles, and particularly relates to a bottle cap assembly with a safe sealing. BACKGROUND

[0002] There are a large number of beverages on the market that separate seasoning and purified water to extend the shelf life and avoid the addition of preservatives, including the applicant has submitted a variety of technical solutions, using an integrated injection molding isolation film (i.e. the isolation film and the bin are integrated injection molded) to separate the two to achieve the above two purposes, such as announcement number ZL202220153076.8 and ZL202122754400.X.

[0003] However, in the later production process, the defects of this design gradually emerge, first of all, in order to facilitate the destruction of the isolation film, so that the seasoning and water can be mixed, a very thin breaking edge is generally designed, so as to achieve the purpose of being able to be pried open or pierced with slight force. The thickness of the position of the breaking edge is generally below 0.1mm. Later in the actual production process, it was found that the shortcomings of this design were quite prominent, and sand eye holes and cracks were prone to occur, resulting in isolation failure and product deterioration. Through analysis, the main reasons for the defects are as follows: 1. The glue does not flow smoothly. Generally, the bin and the bottle cap are made of PE or PP material, which is in liquid form during injection molding. In the thin position, insufficient flow can easily lead to sand eye. 2. Faults occur when the climate changes drastically. When the temperature is extremely low (below -10 degrees), the breaking edge position deforms and cracks under the principle of thermal expansion and cold contraction. 3. Another reason is that in order to seal the purified water, the bin and the bottle will be sealed by using the principle of tight fitting and extrusion. Because of this extrusion force, the breaking edge position is prone to tearing.

[0004] Based on the above reasons, a better design is needed to solve one of the above existing problems, provide a better tensile deformation material to provide better safety assurance, and also ensure that the purpose of easily destroying the isolation film can be achieved.

[0005] Therefore, the present application provides a new technical solution to solve one of the problems in the background art. UTILITY MODEL CONTENTS

[0006] The utility model discloses a bottle cap assembly of safe sealing, including bottle cap, stock bin and skirt, wherein stock bin is hollow structure for storing seasoning, bottle cap is used for and stock bin upper cover, skirt sets up in the periphery of stock bin, and bottle body is connected, and stock bin inside is divided into two parts with composite film, and the upper part is storage cavity for storing seasoning, and the lower part is connecting cavity for being connected with the bottle mouth of bottle body, and provides the passageway of seasoning into the inside of bottle body, the composite film is combined with the sealing membrane ring of stock bin middle part through the mode of heat sealing, and the composite film is no less than three layer structure, and the middle layer is aluminum film. In order to solve the problems in the background art, the technical scheme of heat sealing of composite film is adopted to replace the existing integrated injection molding technical scheme, thereby avoiding the sand eye problem generated during injection molding. At the same time, the other advantages of using composite film are that the middle layer is aluminum film, the material properties of aluminum are suitable for extension, and the temperature change resistance is higher than that of pure plastic film. In this way, the composite film is relatively stable in the environment of severe temperature change of stock bin, because aluminum is relatively stable at low temperature, avoiding the hardening and rupture problem of pure plastic film at low temperature, because the ductility and low temperature resistance of aluminum are good, so the stock bin can remain stable when temperature changes or is deformed under stress, and it is difficult to break. The safety of the product can be greatly protected.

[0007] In the above description, as a preferred scheme, the composite film is composed of three layers of film, the middle layer is an aluminum film, the upper layer film and the lower layer film are both plastic films, the lower layer film is close to the bottle body side, the upper layer film is close to the storage cavity side, and the melting point of the lower layer film is higher than that of the upper layer film. Because pure aluminum film is difficult to fuse with other plastic materials, in order to adapt to the heat sealing process, plastic films are coated on the upper and lower sides of the aluminum film to form the upper layer film and the lower layer film. The upper layer film is used to combine with the sealing membrane ring. Because of the heat sealing processing scheme, the heating head needs to be extruded from the direction of the lower layer film to the composite film, and the upper layer film is melted by high temperature to realize fusion combination with the sealing membrane ring. Therefore, the temperature resistance of the lower layer film is required to be higher than that of the upper layer film to ensure that the high temperature of the heating head does not melt the lower layer film, thereby realizing stable quality and work efficiency.

[0008] In the above description, as a preferred scheme, the lower layer film is a PET film, and the upper layer film is a PE film.

[0009] In the above description, in another scheme, the lower layer film is a PET film, and the upper layer film is a PP film.

[0010] The important difference between the beverage separating the seasoning and pure water and the conventional prepared beverage is that no preservative is added, so the seasoning and pure water need to be isolated and protected, but because the seasoning generally contains acidic substances (such as honey, sugar, etc.), if it is directly in contact with the aluminum film, it will cause the aluminum film to react chemically, so this is one of the reasons why the upper layer of the aluminum film is coated with a PE film or a PP film. These two materials have good acid resistance. At the same time, the general bin is also made of these two materials. Therefore, in order to ensure the melting effect, if the bin is made of PP material, the upper part of the aluminum film is coated with PP film, and if the bin is made of PE material, the upper part of the aluminum film is coated with PE film. In this way, when the upper film is in a molten state, the fusion degree and stability of the same material are better. In addition, in order to further ensure the safety of the water quality, a small amount of ozone is filled into the bottle body before sealing in the last process of filling pure water, and the ozone is used for the last sterilization treatment of pure water. However, the oxidation ability of ozone is high, and if it is directly in contact with the aluminum film, it will cause the aluminum film to oxidize. Therefore, PET film is coated below it to protect the aluminum film. In addition, the melting point of PET material is between 250°C and 255°C. The melting point of PE is 132°C to 135°C, and the melting point of PP is in the range of 164~170°C. In this way, when heat sealing is performed, the temperature of the heating head can be controlled at the melting point temperature of PET, and the melting point temperature of PE and PP. This can achieve the function of heat sealing, and will not affect PET, avoid wire drawing or damage the PET film to expose the aluminum film. This special three-layer composite film structure can ensure the quality of the seasoning and water under the premise of ensuring the quality of the seasoning and water, and can also ensure that the film does not break under harsh conditions. It is also convenient to pierce, so that the seasoning and pure water can be mixed.

[0011] In the above description, as a preferred scheme, the side of the sealing ring facing the lower layer film is a planar structure, and a melting protrusion concentric with the sealing ring is further provided on the planar surface for melting connection with the composite film. The purpose of the melting protrusion is to produce enough liquid material under high temperature melting, which is more conducive to adhesion.

[0012] In the above description, as a preferred scheme, a partition piece is further provided above the sealing ring, a reinforcing rib is provided at the edge connecting the sealing ring and the storage cavity for providing support force, and a sealing ring is further provided below the connecting cavity for sealing the bottle mouth, and an internal thread is provided below the sealing ring for screw connection with the bottle mouth. The partition piece is to prevent the composite film from being broken again and causing the water to enter the oral cavity during drinking. Through the provision of the partition piece, a filtering effect is achieved to prevent large pieces of material from passing through. The partition piece can be in a mesh structure. The sealing ring serves to prevent water leakage when the composite film is damaged and the water and seasoning are mixed. The sealing ring is tightly fitted and sealed with the bottle mouth to achieve the effect of preventing leakage.

[0013] In the above description, as a preferred solution, a blocking piece is arranged below the internal thread, the blocking piece is a trapezoidal structure in cross section, and is used to form a one-way reverse thread locking relationship with the blocking piece on the bottle mouth, and is used to prevent the hopper from rotating reversely.

[0014] In the above description, as a preferred solution, a reinforcing rib is arranged on the periphery of the connecting cavity, and a limiting ring is arranged below the skirt, the limiting ring is a tear strip structure. The limiting ring is mainly used to provide a downward movement space. When the limiting ring is removed, a space difference is formed between the skirt and the bottle body. When the hopper is rotated, the hopper moves downward, so that the cutting piece breaks and opens the composite film, and the mixing is realized. At the same time, the bottle mouth and the sealing ring are in contact, and the sealing is realized.

[0015] In the above description, as a preferred solution, a hollow annular cutting piece is arranged above the bottle mouth, the lower end of the cutting piece is a circular ring structure, the outer diameter of the lower end of the cutting piece matches the inner diameter of the bottle mouth, so that the lower end of the cutting piece can be inserted into the bottle mouth, the outer diameter of the upper end of the cutting piece is greater than the inner diameter of the bottle mouth, so that the cutting piece is supported on the bottle mouth, and a sharp angle-shaped cutting edge is arranged on the upper end of the cutting piece in the upward direction, and is used to cut the composite film.

[0016] In the above description, as a preferred solution, the hopper is made of PE or PP plastic material.

[0017] The utility model discloses the beneficial effect is: utilize the suitable extension advantage of composite film and the high temperature change resistance of simple plastic film. Make the hopper also be more stable in the environment of temperature sharp change, avoid the hardening rupture problem of simple plastic film under low temperature, because the ductility and low temperature resistance of aluminum are good, so when temperature change or hopper stress deformation, can keep stable, difficult to break down the problem. Can protect the safety of product to a greater extent. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the exploded view schematic diagram of example and bottle body;

[0019] Figure 2 It is the cross section perspective schematic diagram of example;

[0020] Figure 3 It is the cross section front view schematic diagram of example and cutting piece;

[0021] Figure 4 It is the top view schematic diagram of example from above;

[0022] Figure 5 It is the connecting cavity top view cross section schematic diagram of example;

[0023] Figure 6 It is the composite film schematic diagram of example;

[0024] In the figure, 1, bottle cap, 2, hopper, 201, storage cavity, 202, sealing ring, 203, sealing ring, 204, spacer, 205, blocking piece, 206, connecting cavity, 207, internal thread, 208, reinforcing rib, 209, external thread, 210, melting protrusion, 3, cutting piece, 4, composite film, 401, upper film, 402, aluminum film, 403, lower film, 5, skirt, 6, limiting ring, 7, bottle body, 701, recess DETAILED DESCRIPTION

[0025] The use of the new type will be further described in detail below in combination with the drawings and specific embodiments.

[0026] The bottle cap assembly includes a bottle cap 1, a hopper 2 and a composite film 4, the composite film 4 is arranged in the middle of the hopper 2, which divides the hopper 2 into two parts, namely a storage cavity 201 and a connecting cavity 206. The upper end of the storage cavity 201 is a circular structure, and an external thread 209 is arranged outside it. The bottle cap 1 and the external thread 209 are threadedly connected and sealed. The seasoning (such as honey, powdered seasoning, etc.) is placed inside the storage cavity 201. A sealing ring 202 is arranged below the connecting cavity 206, which is a circular ring structure. The outer periphery of the circular ring is integrally connected with the inner wall of the storage cavity 201, and the hollow part is a channel for the leakage of seasoning and the entry of pure water. The composite film 4 and the sealing ring 202 are melt-connected, thereby achieving the effect of sealing and isolating the channel of the sealing ring 202, and separating the water and the seasoning. A melting protrusion 210 is arranged on the plane where the lower side of the sealing ring 202 and the composite film 4 are connected. The purpose of the melting protrusion 210 is to generate enough liquid material at high temperature melting, which is more conducive to bonding with the composite film 4.

[0027] In the present embodiment, the composite film 4 is a three-layer structure, from top to bottom, respectively: the upper film 401, the aluminum film 402 and the lower film 403. The aluminum film 402 is a thin film made of aluminum material, and the upper film 401 and the lower film 403 are PE film and PET film respectively. The purpose of this design is that the seasoning generally contains acidic substances, in order to avoid chemical reaction of the aluminum film 402, PE film is coated on the upper layer of the aluminum film 402, which has good acid resistance. In addition, PET film has high oxidation resistance, which protects the aluminum film 402 from below. In addition, because the melting temperature of PET material is in the range of 250-255℃, and the melting point of PE is 132-135℃, and the melting point of PP is 164-170℃. Therefore, when heat sealing is performed, the temperature of the heating head can be controlled at the melting point of PET, and the melting points of PE and PP, so that the heat sealing function can be realized, and the PET will not be affected, avoiding the damage of the PET film and exposing the aluminum film. This special three-layer composite film structure can ensure the quality of the seasoning and water, prevent the film from being damaged under harsh conditions, and facilitate piercing to mix the seasoning and pure water. Of course, the number of coated layers can be increased as needed to more effectively protect the aluminum film 402 and increase the strength of the composite film 4.

[0028] In the present embodiment, the temperature of the heating head is controlled at 180 degrees for heat sealing.

[0029] The inner thread 207 is further provided below the film sealing ring 202, which is used to cooperate with the outer thread 209 of the bottle mouth to realize the connection with the bottle mouth. A sealing ring 203 is further provided between the film sealing ring 202 and the inner thread 207. When the bottle mouth and the connecting cavity 206 are connected, the cutting element 3 provided on the bottle mouth will cut and damage the composite film 4. Therefore, the seasoning in the storage cavity 201 will enter the bottle body 7 through the connecting cavity 206 and the bottle mouth from the damaged part to mix with the pure water, thereby realizing the preparation of the beverage. In order to prevent water or beverage from leaking from the gap between the inner thread 207 and the bottle mouth, the sealing ring 203 is used to seal the periphery of the bottle mouth, and the sealing principle is tight-fitting extrusion sealing. A blocking element 205 is further provided below the inner thread 207, which has a transversely cross-sectioned trapezoidal structure, and is used to form a one-way reverse locking relationship with the blocking element 205 on the bottle mouth, so as to prevent the bin from rotating in the reverse direction, thereby ensuring that after the bin 2 and the bottle body 7 are threadedly connected, they can only move in one direction, i.e. only upward, and cannot be separated again.

[0030] In order to prevent the damaged composite film 4 from entering the consumer's mouth, a partition element 204 is provided above the film sealing ring 202, which can have a cross-net structure to realize the filtering function and block the damaged composite film 4 from entering the oral cavity.

[0031] In order to realize the beauty, the skirt 5 is arranged on the periphery of the bin 2, the outer diameter of the skirt 5 is same as the outer diameter of the bottle body 7, the recess 701 is arranged at the joint of the bottle body 7 and the skirt 5, so that the skirt 5 and the bottle body 7 are integrated and flat, and the limiting ring 6 is arranged below the skirt 5, the limiting ring 6 is the easy-to-tear strip structure, when the limiting ring 6 is torn, a space is formed between the skirt 5 and the bottle body 7, when the bin 2 continues to move downward, the purpose of cutting the composite film 4 by the cutting piece 3 can be realized.

[0032] In order to realize the stability of the assembly, the reinforcing ribs 208 are arranged above the sealing ring 202, the reinforcing ribs 208 are connected with the sealing ring 202 and the inner side wall of the bin 2 respectively, the stability during the heat fusion of the composite film 4 and the reliability during the upward cutting of the cutting piece 3 are ensured through the supporting force, and the reinforcing ribs 208 are also arranged in the vertical direction on the periphery of the connecting cavity 206, so that the strength of the connecting cavity 206 is strengthened, and the sealing effect on the bottle opening is better.

[0033] During the production, the bottle cap 1, the bin 2, the cutting piece 3 and the bottle body 7 are produced through the injection molding process, the composite film 4 is produced in a large piece through the coating mode, and the large piece of composite film 4 is cut into the required size through the stamping or rolling cutting process.

[0034] First, the composite film 4 is sealed and connected with the sealing ring 202 from bottom to top through the heat pressing fusion mode, then the seasoning is injected into the storage cavity 201, and then the bottle cap 1 is sealed above the bin 2, the pure water is injected into the bottle body 7, the ozone is injected, the cutting piece 3 is arranged above the bottle opening, and finally the semi-finished bin 2 is combined with the bottle body 7 in a spiral mode, so that the finished product is realized.

[0035] During the use, the limiting ring 6 is removed, then the bin 2 is continuously rotated, the cutting piece 3 pierces the composite film 4 upward, the composite film 4 is turned over upward, the seasoning enters into the bottle body 7, and the seasoning and the pure water can be actively shaken to be more fully mixed, then the bottle cap 1 is opened, and drinking can be performed.

[0036] The above content is the further detailed description of the utility model in combination with the specific preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, on the premise of not departing from the concept of the utility model, a plurality of simple deductions or replacements can be made, and all of them should be regarded as the protection range of the utility model.

Claims

1. A securely sealed bottle cap assembly, comprising a bottle cap, a hopper, and a skirt, wherein the hopper has an internal hollow structure for storing seasonings, the bottle cap is used to seal the top of the hopper, and the skirt is disposed around the hopper and connected to the bottle body, characterized in that: The inside of the bin is divided into two parts by a composite film, the upper part is a storage cavity for storing seasoning, and the lower part is a connecting cavity for connecting with the bottle mouth of the bottle body to provide a channel for the seasoning to enter the inside of the bottle body, the composite film is fused and combined with the sealing film ring in the middle of the bin by heat sealing, and the composite film has a structure of not less than three layers, and the middle layer is an aluminum film.

2. The child-resistant bottle cap assembly of claim 1, wherein: The composite film is composed of three layers of film, the middle layer is an aluminum film, and the upper and lower layers are plastic films, the lower layer is close to the bottle body side, and the upper layer is close to the storage cavity side, and the melting point of the lower layer is higher than that of the upper layer.

3. The child-resistant bottle cap assembly of claim 2, wherein: The lower layer is a PET film, and the upper layer is a PE film.

4. The child-resistant bottle cap assembly of claim 2, wherein: The lower layer is a PET film, and the upper layer is a PP film.

5. A closure assembly according to claim 3 or 4 wherein: The side of the sealing film ring facing the lower layer is a planar structure, and a fusion protrusion concentric with the sealing film ring is arranged on the plane for fusion connection with the composite film.

6. The child-resistant bottle cap assembly of claim 5, wherein: A partition piece is further arranged above the sealing film ring, a reinforcing rib is arranged at the edge connecting the sealing film ring and the storage cavity for providing support force, a sealing ring is further arranged in the connecting cavity below the sealing film ring for sealing the bottle mouth, an inner thread is arranged below the sealing ring for screw connection with the bottle mouth.

7. The child-resistant bottle cap assembly of claim 6, wherein: A blocking piece is arranged below the inner thread, the blocking piece has a trapezoidal structure in cross section for forming a one-way reverse locking relationship with the blocking piece on the bottle mouth to prevent the bin from rotating in reverse.

8. The child-resistant bottle cap assembly of claim 7, wherein: A reinforcing rib is arranged on the periphery of the connecting cavity, and a limiting ring is arranged below the skirt, the limiting ring has a tear strip structure.

9. The child-resistant bottle cap assembly of claim 8, wherein: A hollow annular cutting piece is arranged above the bottle mouth, the lower end of the cutting piece has a circular ring structure, and the outer diameter of the cutting piece is matched with the inner diameter of the bottle mouth, so that the lower end of the cutting piece can be inserted into the bottle mouth, the outer diameter of the upper end of the cutting piece is larger than the inner diameter of the bottle mouth, so that the cutting piece is supported on the bottle mouth, and a sharp angle knife edge is arranged on the upper end of the cutting piece in the upward direction for cutting the composite film.

10. The child-resistant bottle cap assembly of claim 9, wherein: The bin is made of PE or PP plastic material.

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