Scratch-resistant heat-seal type dry fruit plastic can aluminum foil sealing film

Abstract

This utility model belongs to the field of plastic can sealing technology and discloses a scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans. It includes an easy-tear composite aluminum foil lid, a lever-opening lid, a tin ring lid, and a plastic ring lid, among other structures. Through the synergy of these multiple structures, efficient packaging is achieved. The base layer of the easy-tear composite aluminum foil lid is combined with a scratch-resistant OP protective coating and a food-grade PP heat-sealing layer, which can firmly heat-seal the can opening, blocking air and moisture. The lever-opening lid utilizes the lever principle, applying force to tear the heat-sealing layer for easy opening. The tin ring lid is fitted onto the outermost layer, and its convenient tear-out design reduces the difficulty of disassembly. The plastic ring lid supports the tin ring lid, and its avoidance structure protects the lever-opening lid. The inner anti-cut handle has an inward-folded edge to prevent user scratches. The overall design balances sealing, convenience, and safety. This utility model has a compact and reasonable structural design, is not easily detached after heat sealing, has a good surface gloss, strong anti-oxidation performance, strong sealing performance, and is easy to tear open, making it highly practical.

Description

Technical Field

[0001] This utility model relates to the field of plastic can sealing technology, specifically a scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans. Background Technology

[0002] In today's booming food and health product industry, plastic containers for dried fruits and health supplements have become mainstream packaging formats due to their lightweight, attractive appearance, and ease of storage. As a crucial element in ensuring product quality and safety, the performance of sealing materials directly impacts a product's market competitiveness and consumer experience.

[0003] Currently, existing sealing materials for dried fruit and health product containers on the market face numerous technical bottlenecks. Due to material properties or unreasonable structural design, some sealing materials result in complex and cumbersome heat-sealing operations, making it difficult to precisely control heat-sealing temperature and time. This not only wastes manpower and time but also easily leads to insecure seals. Even a tiny gap at the seal allows outside air and moisture to seep into the container, causing dried fruit to become damp and spoil, and health products to oxidize and become ineffective. This severely impacts product quality and shelf life, causing unnecessary economic losses and damaging brand image.

[0004] Conversely, some sealing materials, while possessing excellent sealing performance, make it extremely difficult for consumers to open the packaging due to excessive sealing strength. Consumers often need to use tools or expend a lot of force, and may even damage the packaging due to excessive force. This not only affects the user experience but also poses certain safety hazards, which undoubtedly reduces consumers' goodwill towards the product and their willingness to repurchase.

[0005] Furthermore, existing plastic ring caps are usually not specially treated, and some consumers may come into contact with the inside of the plastic ring cap after opening it. The inner edge of the ring cap is quite sharp and can easily scratch the skin, especially when children are using it, where the risk of injury is even higher. This safety issue caused by design flaws not only violates the human-centered design philosophy of packaging but also negatively impacts the product's market promotion. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans, thereby solving the problems mentioned in the background art, such as the inconvenience of heat sealing and the difficulty in opening the sealed container.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans, comprising:

[0008] Easy-tear cap composite aluminum foil, wherein the easy-tear cap composite aluminum foil is a circular thin layer structure corresponding to the plastic can opening, and the easy-tear cap composite aluminum foil is attached to the plastic can opening by heat sealing process;

[0009] A lever-opening cover is provided on one side of the easy-tear cover composite aluminum foil. The lever-opening cover is a long strip protruding structure on one side of a circular thin layer. After the lever-opening cover is bent, the end of the lever-opening cover is placed outside the cover.

[0010] Tinplate ring cap, the tinplate ring cap is a circular ring structure, the tinplate ring cap is fitted and sealed on the outermost layer of the plastic can opening;

[0011] A plastic ring cap is disposed between the easy-tear cap composite aluminum foil and the tinplate ring cap, and the plastic ring cap provides support for the tinplate ring cap to prevent it from deforming under pressure.

[0012] Preferably, the easy-tear cap composite aluminum foil includes a base layer, a protective coating, and a heat-sealing layer. The base layer is a metallic aluminum foil, a protective coating is applied to one side of the base layer, and a heat-sealing layer is applied to the other side of the base layer.

[0013] Preferably, the protective coating is a scratch-resistant OP coating, and the coating amount is 1.0-1.2 g / m².

[0014] Preferably, the heat-sealing layer is food-grade PP plastic, and the coating amount of the heat-sealing layer is 6.5-11.0 g / m².

[0015] Preferably, the tinplate ring cover is provided with two sets of convenient tear-out seams.

[0016] Preferably, the plastic ring cover is provided with a lever for opening the cover and avoiding obstruction.

[0017] Preferably, the inner side of the plastic ring cover is provided with an anti-cut hand inward flange.

[0018] Compared with the prior art, this utility model provides a scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans, which has the following beneficial effects:

[0019] 1. This scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic jars features a structure including an easy-tear composite aluminum foil cap, a lever-operated opening cap, a tin ring cap, and a plastic ring cap. The composite aluminum foil is easy to use and facilitates heat sealing. After heat sealing, it is not easy to fall off, has a good surface gloss, strong oxidation resistance, and strong sealing performance. Furthermore, the sealing film is easy to tear, allowing for quick opening of the plastic jar packaging, making it highly practical.

[0020] 2. Equipped with a lever-operated opening cap, the lever can be used to apply upward force to tear the heat seal between the bottle mouth and the composite aluminum foil, allowing the entire cap to be removed. The tearing process is convenient and quick, making it easy to open plastic cans quickly. It is easy to use and highly practical.

[0021] 3. It is equipped with a protective coating and a heat-sealing layer. By applying the protective coating and heat-sealing layer to the aluminum foil base layer, the oxidation resistance, scratch resistance and heat-sealing performance of the aluminum foil can be effectively improved. The composite aluminum foil layer has a good surface color, is easy to use for heat sealing, has good adhesion and is not easy to fall off, and is suitable for heat sealing needs of various shapes. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is an exploded view of the overall structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the easy-tear cap composite aluminum foil structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the easy-tear cap composite aluminum foil and plastic ring cap structure of this utility model;

[0026] Figure 5 This is a cross-sectional view of the easy-tear cap composite aluminum foil and plastic ring cap of this utility model.

[0027] In the picture: 1. Easy-tear cap with composite aluminum foil; 2. Lever-operated cap; 3. Tin ring cap; 4. Plastic ring cap; 5. Base layer; 6. Protective coating; 7. Heat-sealing layer; 8. Convenient tear-off processing; 9. Lever-operated cap with clearance; 10. Cut-resistant inner fold. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 This utility model provides a technical solution:

[0030] A scratch-resistant, heat-sealing aluminum foil sealing film for dried fruit plastic jars, comprising:

[0031] Easy-tear cap composite aluminum foil 1, the easy-tear cap composite aluminum foil 1 is a circular thin layer structure corresponding to the plastic can opening, the easy-tear cap composite aluminum foil 1 is attached to the plastic can opening by heat sealing process;

[0032] Lever-opening cover 2 is located on one side of the easy-tear cover composite aluminum foil 1. The lever-opening cover 2 is a long strip protruding structure on one side of a circular thin layer. After the lever-opening cover 2 is bent, the end is placed outside the cover.

[0033] Tin ring cap 3, tin ring cap 3 is a circular ring structure, tin ring cap 3 is fitted and sealed on the outermost layer of the plastic can opening;

[0034] A plastic ring cover 4 is disposed between the easy-tear cap composite aluminum foil 1 and the tinplate ring cover 3. The plastic ring cover 4 provides support for the tinplate ring cover 3 to prevent it from deforming under pressure.

[0035] Furthermore, the easy-tear cap composite aluminum foil 1 includes a base layer 5, a protective coating 6, and a heat-sealing layer 7. The base layer 5 is a metal aluminum foil, one side of the base layer 5 is coated with the protective coating 6, and the other side of the base layer 5 is coated with the heat-sealing layer 7.

[0036] Furthermore, the protective coating 6 is a scratch-resistant OP coating, with a coating amount of 1.0-1.2 g / m². During the coating operation, the base layer 5 is first unwound using an unwinding device, and then the upper layer of the aluminum foil is coated using a coating device with a coating amount of 1.0-1.2 g / m². After coating, the unwound roll is conveyed to the primary drying chamber for heating and drying at a temperature of 190-210℃, followed by cooling.

[0037] Furthermore, the heat-sealing layer 7 is made of food-grade PP plastic, with a coating amount of 6.5-11.0 g / m². After the protective coating 6 is applied, dried, and cooled, the material is flipped using guide rollers. At this point, the protective coating 6 is placed below the base layer 5, and the upper layer of the base layer 5 is coated with a coating amount of 6.5-11.0 g / m². After coating, it is conveyed to a secondary drying chamber for heating and drying at a temperature of 160-200℃. After drying, it is cooled and then rolled up.

[0038] Furthermore, the tinplate ring cap 3 is provided with two sets of convenient tear-out processing 8. The two sets of convenient tear-out processing 8 cut a small arc in the tinplate ring cap 3. When the cap is opened, the small arc is subjected to force, and the tinplate ring cap 3 breaks along the convenient tear-out processing 8, making it easy to remove the tinplate ring cap 3 from the plastic can opening.

[0039] Furthermore, the plastic ring cover 4 is provided with a lever opening cover avoidance 9. The lever opening cover avoidance 9 leaves space for the lever opening cover 2, preventing the lever opening cover 2 from breaking.

[0040] Furthermore, the inner side of the plastic ring cover 4 is provided with a cut-resistant inner flange 10. The cut-resistant inner flange 10 is used to prevent scratches. This flange is similar to the traditional pipe-type inner flange structure. The existing plastic ring cover has not been treated. After some users open the cover, they may come into contact with the inner side of the plastic ring cover, resulting in skin scratches.

[0041] Structural Description:

[0042] Easy-tear cap composite aluminum foil 1: A circular thin layer structure corresponding to the plastic can opening, which is heat-sealed to the can opening to provide a sealing function;

[0043] Lever-operated cover 2: A long, protruding structure on the side of the easy-tear cover composite aluminum foil, with the end exposed outside the cover after bending, for use in applying force to open;

[0044] Tin ring cap 3: A circular ring structure fitted onto the outermost layer of the plastic can opening, with two sets of easy-to-tear openings, serving to protect and enhance pressure resistance;

[0045] Plastic ring cap 4: Located between the easy-tear cap composite aluminum foil and the tinplate ring cap, it provides support for the tinplate ring cap and prevents it from deforming under pressure;

[0046] Base layer 5: The metal aluminum foil layer of the easy-tear cap composite aluminum foil provides structural strength and initial barrier properties for the sealing film;

[0047] Protective coating 6: A scratch-resistant OP coating applied to one side of the base layer, with a coating amount of 1.0-1.2g / ㎡, which serves to prevent scratches and wear.

[0048] Heat-sealing layer 7: Food-grade PP plastic coated on the other side of the base layer, with a coating amount of 6.5-11.0 g / ㎡, used for heat-sealing the can opening;

[0049] Convenient tear-off processing 8: Two sets of cuts are provided on the tinplate ring cap to cut out small arcs, making it easy to break off the ring cap and remove it;

[0050] Lever opening cover avoidance 9: The plastic ring cover has a structure that reserves space for the lever opening cover to prevent it from breaking when opened;

[0051] Cut-resistant inner flange 10: The flange structure on the inside of the plastic ring cover eliminates edge burrs and prevents scratches to users.

[0052] Working Principle: The easy-tear cap composite aluminum foil 1 serves as the core sealing layer directly contacting the plastic can opening, consisting of a base layer 5, a protective coating 6, and a heat-sealing layer 7. The base layer 5 uses metallic aluminum foil, providing structural strength and initial barrier properties for the sealing film. The protective coating 6 uses scratch-resistant OP coating, applied evenly to one side of the base layer 5 at a rate of 1.0-1.2 g / m². After high-temperature drying and cooling at 190-210℃, a tough and wear-resistant protective layer is formed on the aluminum foil surface, effectively resisting external friction and scratches, preventing damage to the aluminum foil surface and reducing barrier performance. The heat-sealing layer 7 on the other side uses food-grade PP plastic, applied at a rate of 6.5-11.0 g / m², and dried and cooled at 160-200℃. During the heat-sealing process, the heat-sealing layer 7 melts upon heating, tightly adhering to the plastic can opening. After cooling and solidification, it forms a strong and highly airtight connection, preventing the penetration of outside air and moisture. This ensures that dried fruits and health products remain dry and fresh during storage, extending their shelf life. The lever-operated opening cap 2 is cleverly positioned on one side of the easy-tear cap composite aluminum foil 1. Its unique elongated protrusion and bending design provide users with an effortless opening fulcrum. When the user needs to open the plastic can, they simply lift the lever-operated opening cap 2 and apply upward force. The stress generated by the lever principle concentrates at the heat-sealed area between the easy-tear cap composite aluminum foil 1 and the plastic can opening, causing the heat-sealing layer 7 to tear along the direction of force, thus easily removing the entire cap. This design ensures a tight seal while greatly reducing the difficulty of opening, allowing for easy operation without tools and significantly improving the user experience. The tin ring cap 3, as the outermost layer of the sealing film, is fitted and sealed onto the plastic can opening. Its circular ring structure provides additional structural support and protection for the sealing film, enhancing its overall pressure resistance and preventing deformation during transportation and storage that could affect its sealing performance. Two sets of easy-tear seams 8 cut small arcs into the tinplate ring cap 3. When the user opens the cap, the small arcs are the first to bear the force, causing the tinplate ring cap 3 to break along the easy-tear seams, effectively reducing the force required to tear off the cap and preventing damage to the packaging or injury to the user due to excessive force, further optimizing the opening experience. The plastic ring cap 4, positioned between the easy-tear composite aluminum foil 1 and the tinplate ring cap 3, plays a crucial role in connecting the two. On one hand, it provides stable support for the tinplate ring cap 3, dispersing external pressure and preventing deformation under pressure; on the other hand, the lever-opening cap avoidance structure 9 on it provides space for the lever-opening cap 2 to move, preventing it from breaking due to impact with the plastic ring cap 4 during opening, ensuring the reliability of the opening structure. Even more noteworthy is the anti-cut inner folded edge 10 design on the inside of the plastic ring cover 4. Drawing inspiration from the traditional pipe-type inner folded edge structure, the inner edge of the ring cover is folded inward to eliminate edge burrs and sharp corners. Even if the user's hand comes into contact with the inside of the plastic ring cover 4 during the opening process, it will not be scratched, ensuring user safety in all aspects and fully demonstrating the humanized and safe design of the product.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A scratch-resistant, heat-sealing aluminum foil sealing film for dried fruit plastic containers, characterized in that, include: Easy-tear cap composite aluminum foil (1), wherein the easy-tear cap composite aluminum foil (1) is a circular thin layer structure corresponding to the opening of the plastic can, and the easy-tear cap composite aluminum foil (1) is attached to the opening of the plastic can by heat sealing process; Lever opening cover (2), the lever opening cover (2) is disposed on one side of the easy-tear cover composite aluminum foil (1), the lever opening cover (2) is a long strip protruding structure on one side of a circular thin layer, and the end of the lever opening cover (2) is placed outside the cover after bending; Tinplate ring cap (3), the tinplate ring cap (3) is a circular ring structure, the tinplate ring cap (3) is fitted and sealed on the outermost layer of the plastic can opening; A plastic ring cover (4) is disposed between the easy-tear cap composite aluminum foil (1) and the tinplate ring cover (3). The plastic ring cover (4) provides support for the tinplate ring cover (3) to prevent it from being deformed under pressure.

2. The scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans according to claim 1, characterized in that, The easy-tear cap composite aluminum foil (1) includes a base layer (5), a protective coating (6) and a heat-sealing layer (7). The base layer (5) is a metal aluminum foil. The protective coating (6) is coated on one side of the base layer (5), and the heat-sealing layer (7) is coated on the other side of the base layer (5).

3. The scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans according to claim 2, characterized in that, The protective coating (6) is a scratch-resistant OP coating, and the coating amount of the protective coating (6) is 1.0-1.2g / ㎡.

4. The scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans according to claim 2, characterized in that, The heat-sealing layer (7) is made of food-grade PP plastic, and the coating amount of the heat-sealing layer (7) is 6.5-11.0 g / m².

5. The scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans according to claim 1, characterized in that, The tinplate ring cap (3) is provided with two sets of convenient tear-out processing (8).

6. The scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans according to claim 1, characterized in that, The plastic ring cover (4) is provided with a lever to open the cover and avoid (9).

7. The scratch-resistant heat-sealing aluminum foil sealing film for dried fruit plastic cans according to claim 1, characterized in that, The inner side of the plastic ring cover (4) is provided with an anti-cut hand inner flange (10).

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