Bottle opening hemming structure and metal bottle
By designing a specific bottle mouth crimping structure, the sealing problems caused by the excessive crimping arc of the existing metal bottles and the gap at the crimping tail are solved, achieving better sealing, deformation resistance and pressure resistance. Ensure the stability of product quality.
Patent Information
- Application Number
- CN202423166223.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-12-23
AI Technical Summary
The existing metal bottles have too large curves that lead to unstable contact of the bottle cap, affecting the sealing performance; and the gap between the tail of the curling edge and the outer wall of the bottle can easily lead to deformation of the bottle mouth, affecting the sealing performance.
Design a bottle mouth curling structure, including an inner straight section, a first arc section, an everted section, a second arc section, an outer straight section, a third arc section and a rolled up section. The everted section is a horizontal section to adapt When capping, the closed tail of the roll-up section contacts the outer wall of the bottle mouth, forming a closed zero-distance contact.
It increases the contact area and sealing between the bottle mouth and the bottle cap, enhances the anti-deformation and pressure resistance properties, prevents bottle mouth deformation and leakage caused by uneven force, and ensures the stability of product quality.
Smart Images
Figure CN222373299U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of packaging container sealing, in particular to a bottle mouth curling structure and a metal bottle. Background Art
[0002] Crimping is the most commonly used sealing method for aluminum cans, aluminum bottles and other metal containers. Specifically, the edge of the bottle mouth is rolled to form a crimp, and then the bottle cap is covered to form a seal through pressure and friction to prevent oxidation and contamination. It can be seen that the crimping of the bottle mouth is currently an important factor in ensuring the airtightness of aluminum cans, aluminum bottles and other metal containers, which is related to the final quality of the product.
[0003] Figure 1 and Figure 2 The figure shows the metal bottles and their bottle mouth curling structures currently on the market. When they are used for bottle packaging, there are two main problems: 1. The edge of the bottle mouth curls outward at a large arc, resulting in an arc-shaped top surface of the bottle mouth. When it is combined with the bottle cap, the bottle cap and the bottle mouth form a relatively unstable line contact at the upper end, affecting its sealing performance. 2. After the edge of the bottle mouth curls outward, it rolls inward and upward, and there is a certain gap between the tail of the curling and the outer wall of the bottle. In this way, it is easy to deform the bottle mouth due to uneven force during canning or sealing, thereby affecting the sealing of the bottle or can body, and posing certain hidden dangers to the stability of product quality. Utility Model Content
[0004] The utility model aims to solve the above-mentioned various problems and further provides a bottle mouth curling structure and a metal bottle.
[0005] In order to solve the above problems, the technical solution adopted by the utility model is:
[0006] A bottle mouth curling structure is formed at the bottle mouth of a metal bottle and cooperates with a sealing cap to achieve bottle mouth sealing. The bottle mouth curling structure is characterized in that the bottle mouth curling structure comprises: an inner straight section extending vertically upward along the edge of the bottle mouth; an outer eversion section turning outward along the inner straight section via a first arc section; an outer straight section turning downward along the outer eversion section via a second arc section and extending vertically, and a rolling section rolling inwardly and upwardly along the outer straight section via a third arc section;
[0007] The outward-turned section is a horizontal section, so that it forms surface contact with the cover after being matched;
[0008] The rolled-up section has a closed tail portion, and the closed tail portion contacts the outer side of the inner straight section, that is, the outer wall of the bottle mouth.
[0009] Furthermore, the distance between the inner straight section and the outer straight section is the width of the bottle mouth curling, and its size is 2.95±0.2mm.
[0010] Furthermore, the distance between the everted section and the rolled-up section is the height of the bottle mouth curling edge, and its size is 3.7±0.2 mm.
[0011] Furthermore, the R angle value of the first arc segment is 1.5 mm, and the R angle values of the second arc segment and the third arc segment are the same, both being 1.25 mm.
[0012] Furthermore, the cross section of the bottle mouth curling structure is in a closed square mouth shape.
[0013] A metal bottle comprises a bottle body, a bottle shoulder, a bottle neck and a bottle mouth, wherein the bottle mouth has the above-mentioned bottle mouth curling structure.
[0014] Furthermore, the metal bottle is an aluminum bottle.
[0015] Furthermore, the inner diameter of the bottle mouth of the aluminum bottle is 31.9±0.2 mm, and the outer diameter of the bottle mouth is 37.8±0.2 mm.
[0016] The utility model provides a bottle mouth curling structure and a metal bottle, providing a curling structure that is beautiful, practical, and highly resistant to deformation. The bottle mouth with the curling structure has better resistance to deformation, pressure resistance, and sealing performance during the filling and capping process. Specifically, on the one hand, the utility model relatively reduces the R angle of the transition arc segments at both ends of the top of the bottle mouth, so that the top surface of the bottle mouth is infinitely close to a plane structure, which increases the contact area between the bottle mouth and the bottle cap, making the two fit more closely after capping, and enhancing the sealing of the seal. On the other hand, after the curling is turned over, a completely closed zero-distance contact is formed between the curling edge and the outer wall of the bottle, so that it has strong supporting performance when the cap is under pressure, preventing the problem of deformation and leakage of the bottle mouth caused by uneven external force during filling or sealing, and further ensuring the quality stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the existing bottle mouth curling structure;
[0018] Figure 2 yes Figure 1 A magnified view of part B in FIG.
[0019] Figure 3 Schematic diagram of the bottle mouth curling structure of the first embodiment;
[0020] Figure 4 yes Figure 3 A magnified view of part A in FIG.
[0021] Figure 5 It is a schematic diagram of the structure of the metal bottle of the second embodiment;
[0022] Figure 6 yes Figure 5 Enlarged view of middle C;
[0023] In the figure, 1, inner straight section, 2, first arc section, 3, outward-turned section, 4, second arc section, 5, outer straight section, 6, third arc section, 7, rolled-up section, 8, closed tail. DETAILED DESCRIPTION
[0024] The utility model is described in detail below with reference to the accompanying drawings.
[0025] Embodiment 1
[0026] This embodiment relates to a curling structure that is roll-formed at the mouth of an aluminum bottle to fit a cap. Figure 4 The bottle mouth curling structure shown is Figure 3 The enlarged view of the A part shows that the bottle mouth curling structure includes an inner straight section 1, a first arc section 2, an outward-turned section 3, a second arc section 4, an outer straight section 5, a third arc section 6 and a rolled section 7 in sequence based on its rolling route, wherein the width of the curling structure, i.e., the distance between the inner straight section 1 and the outer straight section 5, is 2.95±0.2mm, the height of the curling structure, i.e., the outward-turned section 3 and the rolled section 7, is 3.7±0.2mm, the R angle value of the first arc section 2 is 1.5mm, and the R angle values of the second arc section 4 and the third arc section 6 are the same, both 1.25mm. The curling structure formed by rolling with the above dimensional characteristics has a convoluted and closed square mouth shape as a whole. Compared with the traditional round mouth curling structure, the closed square mouth curling structure has greatly improved both the supporting performance and the sealing performance.
[0027] The inner straight section 1 is formed by extending upward based on the edge of the bottle mouth; the first arc section 2 is connected between the inner straight section 1 and the outward-turned section 3 as a turning transition section; the outward-turned section 3 is a nearly horizontal straight section, thereby providing surface contact between it and the cover; the second arc section 4 is connected between the outward-turned section 3 and the outer straight section 5 as a turning transition section; the outer straight section 5 extends vertically downward and basically remains parallel to the inner straight section 1; the third arc section 6 is connected between the outer straight section 5 and the rolled-up section 7 as a turning transition section; the rolled-up section 7 has a closed tail 8 extending toward the outer wall of the bottle mouth, and the closed tail 8 contacts and fits on the outer wall of the bottle mouth.
[0028] Since the bottle mouth curling structure plays a critical role in the sealing of the packaging container, the present embodiment optimizes the dimensions of various parts of the curling structure. For example, the integral curling arc at the top of the traditional bottle mouth is split into three segments (i.e., a first arc segment, an outward-turned segment, and a second arc segment), and the outward-turned segment is set to a nearly horizontal plane straight segment. At the same time, the R angle value of the first arc segment close to the inner side of the bottle mouth is set to 1.5 mm, and the R angle value of the second arc segment close to the outer side of the bottle mouth is set to 1.25 mm, so that the top of the outer side of the bottle mouth is closer to the plane, thereby increasing the contact surface between the bottle mouth and the bottle cap, so that the two can be more tightly and firmly contacted and fitted after capping, thereby improving the sealing effect.
[0029] Embodiment 2
[0030] This embodiment relates to an aluminum bottle, such as Figure 5 As shown, the aluminum bottle has a bottle body, a bottle shoulder, a bottle neck and a bottle mouth, wherein the bottle mouth is formed by rolling the edge of the bottle mouth through the interaction of a mold and a machine. Figure 6 The curling structure shown in the figure uses mechanical pressure and friction to make the edge of the bottle mouth curl upward and form a closed contact with the outer wall of the bottle body, and the top of the bottle mouth is infinitely close to a plane structure, thereby increasing the contact area between the bottle mouth and the lid. The edge of the bottle mouth of the aluminum bottle is flat, the curling is uniform and there are no obvious scratches or wear, so as to maintain the tightness and aesthetics of the curling of the bottle mouth of the aluminum bottle.
[0031] Specifically, the inner diameter of the bottle mouth of the aluminum bottle of this embodiment is 31.9±0.2mm, and the outer diameter of the bottle mouth with the curling structure is 37.8±0.2mm. The width of the curling structure is 2.95±0.2mm, and the height is 3.7±0.2mm.
[0032] The present invention is not limited to the above-discussed implementations. The above description of the specific implementations is intended to describe and illustrate the technical solutions involved in the present invention. Obvious changes, substitutions or combinations based on the teachings of the present invention should also be considered to fall within the scope of protection of the present invention. The above specific implementations are used to reveal the best implementation method of the present invention, so that ordinary technicians in the field can apply various implementations and various alternatives of the present invention to achieve the purpose of the present invention.
Claims
1. A bottle mouth curling structure, formed on the bottle mouth of a metal bottle, cooperates with a sealing cap to achieve bottle mouth sealing, characterized in that: The bottle mouth curling structure comprises: an inner straight section (1) extending vertically upward along the edge of the bottle mouth; an outer eversion section (3) turning outward along the inner straight section (1) via a first arc section (2); an outer straight section (5) turning downward along the outer eversion section (3) via a second arc section (4) and extending vertically; and a rolling section (7) rolling inwardly and upwardly along the outer straight section (5) via a third arc section (6); The outward-turned section (3) is a horizontal section so that it can form surface contact with the cover after being matched; The rolled-up section (7) has a closed tail (8), and the closed tail (8) contacts the outer side of the inner straight section (1), that is, the outer wall of the bottle mouth.
2. A bottle mouth curling structure according to claim 1, characterized in that: The distance between the inner straight section (1) and the outer straight section (5) is the width of the bottle mouth curling, and its size is 2.95±0.2 mm.
3. A bottle mouth curling structure as claimed in claim 2, characterized in that: The distance between the everted section (3) and the rolled section (7) is the height of the rolled edge of the bottle mouth, and its size is 3.7±0.2 mm.
4. A bottle mouth curling structure as claimed in claim 3, characterized in that: The R angle value of the first arc segment (2) is 1.5 mm, and the R angle values of the second arc segment (4) and the third arc segment (6) are the same, both being 1.25 mm.
5. A bottle mouth curling structure as claimed in claim 4, characterized in that: The cross section of the bottle mouth curling structure is in a closed square mouth shape.
6. A metal bottle, comprising a bottle body, a bottle shoulder, a bottle neck and a bottle mouth, characterized in that: The bottle mouth has the bottle mouth curling structure described in any one of claims 1 to 5.
7. A metal bottle as claimed in claim 6, characterized in that: The metal bottle is an aluminum bottle.
8. A metal bottle as claimed in claim 7, characterized in that: The inner diameter of the bottle mouth of the aluminum bottle is 31.9±0.2 mm, and the outer diameter of the bottle mouth is 37.8±0.2 mm.