A threaded neck aluminum bottle for containing a pharmaceutical or food product

Abstract

The utility model relates to a threaded mouth aluminum bottle for containing medicine or food, including the inside turning overhanging structure that forms the sealing surface on the bottle mouth upper end, the inside turning overhanging structure is connected by first circular arc chamfer, straight section and second circular arc chamfer transition, first circular arc chamfer is bent and is turned over along the bottle mouth inward, and its R angle value is 0.5mm, straight section starts from first circular arc chamfer end and extends 1.5mm horizontally, and then connects to the start of second circular arc chamfer, and the end of second circular arc chamfer is completed inside turning overhanging downward, and its R angle value is 1.5mm. The utility model satisfies environmental protection, light-avoiding, high sealing property and safety and other various use requirements, has the natural environmental protection and light-avoiding, in the sealing performance aspect, the bottle mouth of the utility model adopts the inside turning overhanging structure, passes through three -section type transition design, not only improves the sealing property between bottle mouth and bottle cap, simultaneously guarantees bottle mouth place smooth and round, avoids the security risk when taking or drinking.

Description

Technical Field

[0001] This utility model relates to a threaded aluminum bottle for holding medicines or food, belonging to the field of packaging container technology, and in particular to an aluminum bottle with an improved sealing structure. Background Technology

[0002] In the pharmaceutical and food packaging industry, traditional packaging containers are mainly plastic bottles. Plastic bottles are widely used in the packaging of various pharmaceuticals and foods due to their low cost, light weight, and ease of processing. However, with increasing requirements for the preservation of pharmaceuticals and food, and growing environmental awareness, the limitations of plastic bottles are gradually becoming apparent, mainly in the following aspects:

[0003] 1. Insufficient chemical stability and barrier properties

[0004] Plastic bottles have relatively poor chemical stability, especially during long-term storage. They may react chemically with pharmaceuticals or food, affecting the product's quality and stability. Furthermore, plastic bottles have limited barrier properties, failing to effectively prevent the penetration of external factors such as oxygen, moisture, and light, thus affecting the active ingredients and shelf life of pharmaceuticals or food.

[0005] 2. Sealing issues

[0006] Plastic bottles are prone to leaks during use, especially during transportation and storage. The caps may loosen due to external forces, leading to leakage of medicines or food, which not only affects product safety but may also cause waste.

[0007] 3. Poor environmental performance

[0008] Plastic bottles are difficult to degrade naturally, putting significant pressure on the environment. With increasing global environmental awareness, reducing the use of plastic packaging has become an important direction for industry development.

[0009] 4. Appearance and texture limitations

[0010] Plastic bottles offer relatively limited visual appeal and texture, making it difficult to meet the aesthetic and premium packaging requirements of high-end pharmaceuticals and food products. In some high-end markets, the use of plastic bottles may reduce a product's market competitiveness.

[0011] To address the aforementioned issues, some improved solutions have been developed on the market, such as using glass bottles or composite material packaging. However, these solutions suffer from drawbacks such as high cost, heavy weight, or complex processing, which limits their widespread application. Utility Model Content

[0012] This utility model provides a threaded aluminum bottle for holding medicines or food, aiming to solve the problems of poor environmental protection, insufficient light protection, poor sealing and safety hazards when taking medicines from traditional plastic bottles.

[0013] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0014] A threaded aluminum bottle for holding medicines or food includes a bottle bottom, a bottle body, a bottle shoulder, a bottle neck, and a bottle mouth. The bottle mouth is characterized by replacing the traditional outward-curling edge structure with an inward-curling edge structure. The inward-curling edge structure, together with the external thread at the bottle neck, serves as a connecting and fitting structure for the threaded bottle cap. The inward-curling edge structure forms an annular sealing surface at the upper end of the bottle mouth, and this sealing surface abuts against the inner end face of the bottle cap to form a surface contact seal.

[0015] Furthermore, the inward-curling edge structure is formed by a first rounded chamfer, a straight section, and a second rounded chamfer. The first rounded chamfer bends inward along the bottle mouth, the straight section starts from the end of the first rounded chamfer and extends horizontally for a predetermined distance, and then transitions to the starting end of the second rounded chamfer. The end of the second rounded chamfer completes the inward-curling edge by turning downward.

[0016] Furthermore, the radius (R) of the first rounded chamfer is 0.5 mm; the radius (R) of the second rounded chamfer is 1.5 mm; and the length of the straight section is 1.5 mm.

[0017] Furthermore, the bottom of the bottle is provided with a concave structure to enhance the pressure resistance and placement stability of the bottle, and the height of the concave structure is 6.5-7.5mm.

[0018] Furthermore, the bottle shoulder is formed by a transitional connection between a third rounded chamfer and a fourth rounded chamfer, wherein the radius (R) of the third rounded chamfer is 0.5 mm, and the radius (R) of the fourth rounded chamfer is 0.5 mm.

[0019] Furthermore, the inner wall of the aluminum bottle is coated with a food-grade protective coating to prevent direct contact between the medicine or food and the aluminum metal.

[0020] Furthermore, the outer wall of the aluminum bottle is coated with a base oil, an ink layer, and a scratch-resistant layer from the inside out to improve wear resistance and facilitate printing of markings.

[0021] This utility model discloses a threaded aluminum bottle that meets multiple usage requirements such as environmental protection, light protection, high sealing performance, and safety. Compared with traditional plastic layers, the threaded aluminum bottle of this utility model has natural environmental protection and light protection. In terms of sealing performance, this utility model adopts an inward-curled edge structure for the bottle mouth. Through a three-section transition design, it can not only significantly improve the sealing performance between the bottle mouth and the cap, but also ensure that the bottle mouth is smooth and rounded, avoiding safety hazards when taking out or drinking. At the same time, the inward-curled edge structure can prevent wear on the inner wall coating of the bottle mouth, so that a smoother outer coating forms the bottle mouth, achieving higher safety and better appearance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the aluminum bottle structure in Example 1;

[0023] Figure 2 for Figure 1 Schematic diagram of the bottle neck structure;

[0024] Figure 3 for Figure 1 A schematic diagram of a half-section structure;

[0025] Figure 4 for Figure 1 A schematic diagram of the inward-curling edge structure of the bottle mouth;

[0026] In the diagram, 1 is the bottom of the bottle, 2 is the body of the bottle, 3 is the shoulder of the bottle, 4 is the neck of the bottle, 5 is the mouth of the bottle, 6 is the sealing surface, 7 is the concave structure, 8 is the inner wall of the bottle, 9 is the first rounded chamfer, 10 is the second rounded chamfer, 11 is the third rounded chamfer, 12 is the fourth rounded chamfer, and 13 is the straight section. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] Example 1

[0029] This embodiment provides a threaded aluminum bottle for holding medicines or food, the structure of which is as follows: Figures 1 to 3As shown, the aluminum bottle is made of aluminum through an integrated stamping and stretching process. Its structure includes a bottle bottom 1, bottle body 2, bottle shoulder 3, bottle neck 4, and bottle mouth 5. The aluminum bottle has a seamless connection structure, ensuring excellent sealing. Furthermore, the properties of aluminum give the bottle environmental recyclability, and the aluminum substrate itself has light-blocking properties, effectively protecting the contents. The diameter D1 of the bottle body 2 is 44-78mm, the bottle height H2 is 100-266mm, and the outer diameter D2 of the bottle mouth is 37.79mm. The bottle mouth 5 adopts an inward-curving edge structure, different from the traditional outward-curving edge. This inward-curving edge structure includes a first arc chamfer 9 that bends inward along the bottle mouth, a straight section 13 that transitions to the end of the first arc chamfer 9 and extends horizontally for 1.5mm, and a second arc chamfer 10 that completes the inward-curving edge downward based on the end of the straight section 13. The first rounded chamfer 9 achieves the initial inward taper of the bottle mouth edge, with an R-angle value of 0.5mm. The second rounded chamfer 10 completes the final inward curl, with an R-angle value of 1.5mm. The straight section 13 is located between the first rounded chamfer 9 and the second rounded chamfer 10, forming an annular sealing surface 6 at the upper end of the bottle mouth. This sealing surface 6 is used to abut against the inner end face of the bottle cap, thereby forming an effective surface contact sealing effect. The inward curl structure improves the sealing performance by increasing the contact area with the bottle cap sealing gasket, and makes the bottle mouth smooth and rounded by the inward curl, eliminating sharp or burr edges and preventing scratches when the user takes it out.

[0030] Example 2

[0031] The difference between this embodiment and Embodiment 1 is that the bottle bottom 1 is provided with a concave structure 7, the height H1 of which is 6.5-7.5mm. This structure is formed by bottom stamping, which can improve the compressive strength of the bottle and enhance the stability of the bottle itself.

[0032] The bottle shoulder 3 is formed by the transition connection of the third rounded chamfer 11 and the fourth rounded chamfer 12, wherein the radius of the third rounded chamfer 11 is 0.5mm and the radius of the fourth rounded chamfer 12 is 0.5mm.

[0033] The inner wall 8 of the bottle is coated with a food-grade protective coating that is BPA-free to ensure that the contents do not come into direct contact with the aluminum material. At the same time, a base oil, an ink layer, and a scratch-resistant layer are sequentially coated on the outer surface of the bottle. The base oil increases the smoothness of the bottle, the ink layer is used for subsequent printing of pharmaceutical or food label information, and the scratch-resistant layer improves the wear resistance of the aluminum bottle.

[0034] This invention optimizes the bottle opening design and sealing structure, making it superior to traditional plastic bottles in terms of chemical stability, barrier properties, sealing performance, environmental friendliness, and appearance. It is also compatible with existing filling and sealing processes, providing a higher-quality, more environmentally friendly, and more competitive solution for pharmaceutical and food packaging.

[0035] This utility model is not limited to the embodiments discussed above. The above description of specific embodiments is intended to describe and illustrate the technical solutions involved in this utility model. Obvious variations, substitutions, or combinations based on the teachings of this utility model should also be considered to fall within the protection scope of this utility model. The above specific embodiments are used to disclose the best implementation method of this utility model, so that those skilled in the art can apply various embodiments and alternative methods of this utility model to achieve the purpose of this utility model.

Claims

1. A threaded mouth aluminum bottle for containing a pharmaceutical or food product comprising a bottom, a body, a shoulder, a neck and a mouth, characterized in that, The bottle mouth adopts an inward rolled edge structure. The inward rolled edge structure and the external thread at the bottle neck together serve as the connection and adaptation structure of the threaded bottle cap. The inward rolled edge structure forms an annular sealing surface at the upper end of the bottle mouth, and the sealing surface abuts against the inner end face of the bottle cap to form a surface contact seal. The inward-curling edge structure is formed by a first rounded chamfer, a straight section, and a second rounded chamfer. The first rounded chamfer bends inward along the bottle mouth. The straight section starts from the end of the first rounded chamfer and extends horizontally for a predetermined distance before transitioning to the starting end of the second rounded chamfer. The end of the second rounded chamfer completes the inward-curling edge by turning downward. The radius (R) of the first rounded chamfer is 0.5 mm; the radius (R) of the second rounded chamfer is 1.5 mm; and the length of the straight section is 1.5 mm.

2. A threaded aluminum bottle for holding medicines or food as described in claim 1, characterized in that, The bottom of the bottle is provided with a concave structure to enhance the pressure resistance and placement stability of the bottle, and the height of the concave structure is 6.5-7.5mm.

3. A threaded aluminum bottle for holding medicines or food as described in claim 1, characterized in that, The bottle shoulder is formed by the transition between a third rounded chamfer and a fourth rounded chamfer, wherein the radius (R) of the third rounded chamfer is 0.5 mm and the radius (R) of the fourth rounded chamfer is 0.5 mm.

4. A threaded aluminum bottle for holding medicines or food as described in claim 1, characterized in that, The inner wall of the aluminum bottle is coated with a food-grade protective coating to prevent medicines or food from coming into direct contact with the aluminum metal.

5. A threaded aluminum bottle for holding medicines or food as described in claim 1, characterized in that, The outer wall of the aluminum bottle is coated with a base oil, an ink layer, and a scratch-resistant layer from the inside out to improve wear resistance and facilitate printing of markings.

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