Heat insulation aluminum foil packaging film for food packaging

Abstract

The utility model belongs to the field of packaging films, particularly relates to a heat-insulating aluminum foil packaging film for food packaging, and aims to solve the problems that the quality guarantee period of food is shortened and the freshness and the quality of the food are reduced as the food is easily affected by light aging and oxidative deterioration due to the fact that the conventional packaging film is lack of effective barrier to ultraviolet rays and oxygen. According to the scheme, the film comprises a supporting frame and a winding drum, the winding drum is wound with a film body, and the film body comprises an ultraviolet-proof layer, a waterproof layer, an oxygen barrier layer, a protective layer, an aluminum foil layer, a contact layer and an antibacterial layer; the cutting assembly is arranged on the supporting frame and used for facilitating segmented cutting of the film body. Through the arrangement of the ultraviolet-proof layer and the oxygen barrier layer, the protection performance of the heat insulation aluminum foil packaging film for food packaging is effectively improved, damage of ultraviolet rays to food can be blocked, oxygen permeation can be prevented, and therefore the shelf life of the food is prolonged, and the freshness and quality of the food are kept.

Description

Technical Field

[0001] This utility model relates to the field of packaging film technology, and in particular to a heat-insulating aluminum foil packaging film for food packaging. Background Technology

[0002] Food packaging heat-insulating aluminum foil packaging film is mainly composed of aluminum foil and plastic film through a specific process. The aluminum foil part is usually made of high-purity aluminum that has been rolled multiple times to form an extremely thin sheet, while the plastic film serves as the substrate, providing a certain degree of flexibility and processability.

[0003] In order to adapt to different food packaging specifications, improve packaging efficiency and accuracy, optimize material utilization, and reduce waste, food packaging heat-insulating aluminum foil packaging film needs to be cut during the food packaging process.

[0004] Currently, while existing heat-insulating aluminum foil packaging films for food have a certain degree of heat insulation effect and can effectively maintain the temperature of food, they lack effective blocking of ultraviolet rays and oxygen. This makes food susceptible to photoaging and oxidative deterioration, thereby shortening the shelf life of food and reducing its freshness and quality. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies that lack effective blocking of ultraviolet rays and oxygen, which makes food susceptible to photoaging and oxidative deterioration, thereby shortening the shelf life of food and reducing its freshness and quality. Therefore, this invention proposes a heat-insulating aluminum foil packaging film for food packaging.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A heat-insulating aluminum foil packaging film for food packaging, comprising:

[0008] The support frame and the roll, the outer side of which is wound a membrane body, the membrane body including an anti-ultraviolet layer, a waterproof layer, an oxygen barrier layer, a protective layer, an aluminum foil layer, a contact layer and an antibacterial layer;

[0009] In one possible design, a cutting assembly is also included, which is disposed on the support frame and is used to facilitate the segmented cutting of the membrane body. The cutting assembly includes a groove formed on one side of the support frame, a slide block is slidably disposed inside the groove, and a bidirectional blade is fixedly disposed at the bottom of the slide block.

[0010] In one possible design, a lever is fixedly mounted on the top of the slide block, and a clamping plate is detachably placed on the top of the support frame next to the slide block. Two uprights are symmetrically fixedly mounted on the top of the clamping plate, and the same clamping plate is slidably mounted on the outside of the two uprights. A tension spring is sleeved on the outside of both uprights, and the bottom end of the tension spring is fixedly connected to the top of the clamping plate, while the other end of the tension spring is fixedly connected to the upright.

[0011] In one possible design, both the bottom and top of the clamping plate are fixedly provided with anti-slip pads for easy gripping, and a guide plate is fixedly provided on the side of the support frame away from the slide.

[0012] In one possible design, the top of the support frame is symmetrically provided with U-shaped grooves, and the same rotating rod is placed inside the two U-shaped grooves. A knob is fixedly provided at one end of the rotating rod, and the rotating rod is inserted into the drum.

[0013] In one possible design, the UV-protective layer is a PET film disposed on the outer layer of the membrane body, the waterproof layer is a polyester film disposed below the UV-protective layer, the antibacterial layer is a natural antibacterial agent disposed on the inner layer of the membrane body, and the contact layer is a polypropylene film disposed above the antibacterial layer.

[0014] In one possible design, the oxygen barrier layer below the waterproof layer is made of polyvinylidene chloride, the protective layer below the oxygen barrier layer is made of nylon film, and the aluminum foil layer below the protective layer is honeycomb-shaped.

[0015] In this application, when starting to use the device, the support frame is first placed in the position where it is needed, then the roll of the membrane body that has been wound is taken out, the rotating rod is inserted into the inside of the roll, and then the rotating rod is placed in the two U-shaped grooves of the support frame.

[0016] Next, pull one end of the membrane body along the guide plate until it passes through the cutting area and enters the top of the clamping plate, positioned between the clamping plate and the clamping plate. Then, pinch the anti-slip pads on the clamping plate and the clamping plate respectively, causing the clamping plate to move towards the clamping plate and clamp the membrane body. While still pinching the clamping plate and the clamping plate, remove them from the support frame and continue pulling until the membrane body is pulled to the appropriate length. Then, turn the knob in the opposite direction. As the knob turns, it drives the rotating rod to rotate, which in turn drives the drum to rotate. Rotate the film body in the opposite direction to make the pulled-out film body taut. Then, hold the lever and use the lever to move the slide and the bidirectional blade on it to the other side to cut the film body. After cutting, gently release the clamping plate. At this time, the tension spring pulls the clamping plate to move upward along the column. Then, remove the cut film body from between the clamping plate and the clamping plate. According to the packaging requirements, unfold the film body and cover the food. In this process, always ensure that the contact layer of the film body is flat and adheres to the food surface without bubbles or wrinkles.

[0017] When more food needs to be packaged, the film body can be cut according to the above steps to complete the food packaging process.

[0018] This utility model has the following beneficial effects:

[0019] The cutting component in this invention not only enables rapid and precise cutting of the packaging film, but also effectively prevents the risk of hand injuries from the edges of the packaging film during the cutting process, thereby improving packaging efficiency, ensuring operator safety, and reflecting the human-centered and practical design.

[0020] This invention effectively enhances the protective performance of food packaging heat-insulating aluminum foil film by setting up an anti-ultraviolet layer and an oxygen barrier layer. It can block ultraviolet rays from damaging food and prevent oxygen penetration, thereby extending the shelf life of food and maintaining its freshness and quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a heat-insulating aluminum foil packaging film for food packaging proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the overall film body and rotating rod separation structure of a heat-insulating aluminum foil packaging film for food packaging proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the partial component separation structure of a heat-insulating aluminum foil packaging film for food packaging proposed in this utility model;

[0024] Figure 4This is a schematic cross-sectional view of the main body of a heat-insulating aluminum foil packaging film for food packaging proposed in this utility model.

[0025] Figure 5 This is a schematic cross-sectional view of the main body of a heat-insulating aluminum foil packaging film for food packaging proposed in this utility model.

[0026] In the diagram: 1. Support frame; 2. Roll; 3. Membrane body; 301. UV protection layer; 302. Waterproof layer; 303. Oxygen barrier layer; 304. Protective layer; 305. Aluminum foil layer; 306. Contact layer; 307. Antibacterial layer; 4. Slide groove; 5. Slide seat; 501. Actuating rod; 6. Bidirectional blade; 7. Clamping plate; 8. Column; 9. Clamping plate; 10. Tension spring; 11. Anti-slip pad; 12. Guide plate; 13. U-shaped groove; 14. Rotating rod; 15. Knob. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0028] Reference Figure 1-5 A packaging film, comprising:

[0029] The device consists of a support frame 1 and a roll 2. The support frame 1 serves as the foundation for the entire device, ensuring stability and durability. The roll 2 is mounted on the support frame 1, and a film body 3 is tightly wound around its exterior. The film body 3 is composed of multiple layers of composite materials. Specifically, from the outside to the inside, the film body 3 includes an ultraviolet-resistant layer 301, a waterproof layer 302, an oxygen barrier layer 303, a protective layer 304, an aluminum foil layer 305, a contact layer 306, and an antibacterial layer 307. The ultraviolet-resistant layer 301, as the outermost layer, effectively blocks ultraviolet rays from damaging the food inside the packaging. Next is the waterproof layer 302, made of polyester film, ensuring good waterproof performance. The oxygen barrier layer 303 uses polyvinylidene chloride to prevent oxygen from entering the packaging, extending the shelf life of the food. The protective layer 304 is a nylon film, providing... With additional mechanical strength and abrasion resistance, the aluminum foil layer 305 is designed in a honeycomb pattern, which not only enhances the heat insulation effect but also maintains the lightweight nature of the packaging. The contact layer 306 is a polypropylene film, ensuring that the direct contact surface between food and the packaging film is safe and harmless. The innermost antibacterial layer 307 is a natural antibacterial agent (such as plant essential oils and antimicrobial peptides) that can effectively inhibit bacterial growth and ensure food hygiene. The layers of UV protection layer 301, waterproof layer 302, oxygen barrier layer 303, protective layer 304, aluminum foil layer 305, contact layer 306, and antibacterial layer 307 are bonded together with resins or adhesives with excellent adhesion properties (such as polyvinyl butyral (PVB) or polyurethane (PU) adhesives) to improve the bonding strength between the layers, ensure the integrity and stability of the packaging film, and prevent delamination or damage during use.

[0030] To achieve rapid and precise cutting of the membrane body 3, this specific embodiment includes a cutting assembly on the support frame 1. The cutting assembly mainly consists of a slide groove 4, a slide block 5, a bidirectional blade 6, a lever 501, a clamping plate 7, a column 8, a clamping plate 9, a tension spring 10, and an anti-slip pad 11. The slide groove 4 is located on one side of the support frame 1, and the slide block 5 can slide freely within the slide groove 4. The bidirectional blade 6 is fixed to the bottom of the slide block 5 for cutting the membrane body 3. The lever 501 is located at the top of the slide block 5 for easy cutting. The operator manually pushes the slide block 5 to cut. The clamping plate 7 can be detachably placed on the top of the support frame 1, close to the slide block 5, to fix one end of the membrane body 3 to be cut. The top of the clamping plate 7 and the clamping plate 9 are equipped with anti-slip pads 11 to increase friction and ensure that the membrane body 3 will not slip during the cutting process and fall off. The two columns 8 are fixed on the top of the clamping plate 7. The clamping plate 9 slides on the two columns 8 and is provided with an upward elastic force by the tension spring 10, so as to facilitate the reset of the clamping plate 9 after releasing the hand.

[0031] This application can be used in the field of food packaging heat-insulating aluminum foil packaging film technology, and can also be used in other fields applicable to this application. Example

[0032] Based on Embodiment 1, Embodiment 2 further includes: a food packaging heat-insulating aluminum foil packaging film, which is applied to the field of food packaging heat-insulating aluminum foil packaging film technology. In addition, in order to guide the film body 3 to be smoothly pulled out after cutting, a guide plate 12 is fixedly provided on the side of the support frame away from the slide 5. The design of the guide plate 12 enables the film body 3 to be smoothly unfolded along a predetermined path after cutting.

[0033] To facilitate the winding and unwinding of the membrane body 3, a U-shaped groove 13 is symmetrically opened on the top of the support frame 1. A rotating rod 14 is placed in the U-shaped groove 13. A knob 15 is fixed to one end of the rotating rod 14, which allows the operator to manually rotate the rotating rod 14, thereby driving the rotation of the roll 2 to realize the winding and unwinding of the membrane body 3. At the same time, it is convenient to tighten the membrane body 3. The other end of the rotating rod 14 is inserted into the roll 2 to ensure a firm connection between the rotating rod 14 and the roll 2.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A food packaging heat-shielding aluminum foil packaging film, characterized by, include: The support frame (1) and the roll (2) are wound around the outside of the roll (2), and the film body (3) includes an anti-ultraviolet layer (301), a waterproof layer (302), an oxygen barrier layer (303), a protective layer (304), an aluminum foil layer (305), a contact layer (306), and an antibacterial layer (307).

2. The packaging film according to claim 1, wherein It also includes a cutting component, which is set on the support frame (1) and is used to facilitate the segmented cutting of the membrane body (3). The cutting component includes a groove (4) opened on one side of the support frame (1), and a slide seat (5) is slidably arranged inside the groove (4). A bidirectional blade (6) is fixedly arranged at the bottom of the slide seat (5).

3. The packaging film according to claim 2, wherein A lever (501) is fixedly installed on the top of the slide (5). A clamping plate (7) is placed detachably next to the slide (5) on the top of the support frame (1). Two columns (8) are symmetrically fixedly installed on the top of the clamping plate (7). The same clamping plate (9) is slidably installed on the outside of the two columns (8). A tension spring (10) is sleeved on the outside of both columns (8). The bottom end of the tension spring (10) is fixedly connected to the top of the clamping plate (9), and the other end of the tension spring (10) is fixedly connected to the column (8).

4. The packaging film according to claim 3, wherein The bottom of the clamping plate (7) and the top of the clamping plate (9) are both fixedly provided with anti-slip pads (11) for easy gripping, and the side of the support frame (1) away from the slide (5) is fixedly provided with a guide plate (12).

5. The packaging film according to claim 2, wherein The top of the support frame (1) is symmetrically provided with U-shaped grooves (13), and the same rotating rod (14) is placed inside the two U-shaped grooves (13). A knob (15) is fixedly provided at one end of the rotating rod (14), and the rotating rod (14) is inserted into the drum (2).

6. The food packaging heat-shielding aluminum foil packaging film according to claim 2, characterized in that, The UV protection layer (301) is a PET film disposed on the outer layer of the membrane body (3), the waterproof layer (302) is a polyester film located below the UV protection layer (301), the antibacterial layer (307) is a natural antibacterial agent disposed on the inner layer of the membrane body (3), and the contact layer (306) is a polypropylene film located above the antibacterial layer (307).

7. The food packaging heat-insulating aluminum foil packaging film according to claim 2, characterized in that, The oxygen barrier layer (303) located below the waterproof layer (302) is made of polyvinylidene chloride, the protective layer (304) located below the oxygen barrier layer (303) is made of nylon film, and the aluminum foil layer (305) located below the protective layer (304) is honeycomb-shaped.

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