High-efficiency heat-preservation and heat-insulation composite aluminum foil

Abstract

The utility model relates to the technical field of composite aluminum foils, in particular to an efficient heat preservation and insulation composite aluminum foil which comprises a box body, a box cover and an installation device, the inner layers of the box body and the box cover are food contact layers, the outer layers of the food contact layers are heat insulation layers, and the outer walls of the heat insulation layers are protection layers. The top end of the box body is connected with the box cover through the installation device, the multiple sets of inverted and obliquely designed locking blocks on the side walls of the inner end and the outer end of the installation ring can correspondingly enter the locking grooves in the installation groove, due to the oblique design of the locking blocks, the locking blocks can automatically contract in the insertion process and stretch after entering the locking grooves, and therefore the locking blocks can be inserted into the installation ring. The locking groove is limited, the box cover is locked on the box body, the sealing folded edge on the outer wall of the box cover further enhances the sealing performance of the whole structure, it is ensured that the internal environment is not affected by the outside, and the multi-layer structure can not only ensure food safety, but also effectively keep the temperature, and is suitable for various storage and transportation requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite aluminum foil technical field, concretely is a kind of efficient heat preservation composite aluminum foil. BACKGROUND

[0002] As a kind of metal material with good ductility, aluminum foil not only has the characteristics of moisture-proof, light-shielding, corrosion-resistant, non-toxic and odorless, can insulate the food packaged from light, water, air, ultraviolet rays outside;And also resistant to high temperature, can be directly used in microwave oven, oven, and open fire heating, has wide application prospect in catering packaging field.

[0003] Although the traditional aluminum foil material can insulate the temperature change outside to a certain extent, the heat preservation or cold preservation effect under extreme conditions is not ideal, and some high-performance aluminum foil tableware is often designed complicatedly, needs to be closed with the aid of tool, which not only increases the difficulty of use, but also may affect the timeliness of use. UTILITY MODEL CONTENT

[0004] (1) technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides an efficient heat preservation composite aluminum foil.

[0006] (2) technical scheme

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an efficient heat preservation composite aluminum foil, comprising a box body, a box cover and a mounting device, the inner layer of the box body and the box cover is food contact layer, the outer layer of the food contact layer is heat insulation layer, the outer wall of the heat insulation layer is protective layer, the top end of the box body is connected with the box cover through the mounting device, the mounting device is installed ring, installation groove, locking block, locking groove and sealing flange, the bottom wall of the box cover is fixedly installed with the installation ring, the top wall of the box body is provided with the installation groove, the installation ring and the installation groove are matched, the inner and outer walls of the installation ring are both installed with a plurality of inverted and inclined locking blocks, the locking groove is arranged in the installation groove, the locking groove and the locking block are matched, and the outer wall of the box cover is provided with the sealing flange.

[0008] Further, the utility model improves that the side wall of the box cover is provided with tear leaves.

[0009] Further, the utility model improves that the surface of the food contact layer is embossed.

[0010] Further, the utility model improves that when the heat insulation layer is nanometer aerogel felt, the porosity is greater than 90%, and the pore size is less than 50nm.

[0011] Further, the protective layer is made of PE film.

[0012] Further, the food contact layer has a thickness of 10-20 μm.

[0013] Further, the heat insulation layer has a thickness of 2-5 mm and a thermal conductivity coefficient lower than 0.02 W / (m·K).

[0014] Further, the protective layer has a thickness of 20-50 μm.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the utility model provides a kind of efficient heat preservation composite aluminium foil, with following beneficial effects:

[0017] The efficient heat preservation composite aluminium foil, by being provided with mounting device, the design scheme allows user to easily complete the connecting operation of box cover and box body without any tool, the accurate adaptation of mounting ring and mounting groove, plus the inclined design of locking block and locking groove, so that insertion process is simple and intuitive, locking block is automatically retracted in insertion process and stretches after entering locking groove, realize quick and stable locking, greatly facilitate the use of user, the sealing flange on the outer wall of box cover further enhances the sealing property of entire structure, when sealing flange is folded to the edge of box cover, can effectively prevent the invasion of external factors such as air, moisture, etc., the inner layer of box body and box cover is food contact layer, ensure the safety of direct contact food, the heat insulation layer in middle provides efficient heat preservation performance, the outermost protective layer provides additional physical protection, this multilayer structure not only can ensure food safety, also can effectively maintain temperature, applicable to a variety of storage and transportation needs, whether hot food preservation or refrigerated food transportation can be competent. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is overall structure schematic diagram of the utility model;

[0019] Figure 2 It is box cover three-dimensional structure schematic diagram of the utility model;

[0020] Figure 3 It is box body half-cut three-dimensional structure schematic diagram of the utility model;

[0021] Figure 4 It is the local part A of the utility model Figure 3 Enlarged structure schematic diagram.

[0022] In the figure: 1, box body; 2, box cover; 3, food contact layer; 4, heat insulation layer; 5, protective layer; 6, mounting ring; 7, mounting groove; 8, locking block; 9, locking groove; 10, sealing flange; 11, tear leaf. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Please refer to Figures 1-4The utility model provides a kind of high-efficiency heat preservation composite aluminium foil, including box 1, box cover 2 and mounting device, the inner layer of the box 1 and the box cover 2 is food contact layer 3, the outer layer of the food contact layer 3 is heat insulation layer 4, the outer wall of the heat insulation layer 4 is protective layer 5, the top end of the box 1 is connected with the box cover 2 by the mounting device, the mounting device includes mounting ring 6, installation groove 7, locking block 8, locking groove 9 and sealing flange 10, the bottom wall of the box cover 2 is fixedly installed with the mounting ring 6, the top wall of the box 1 is provided with the installation groove 7, the mounting ring 6 and the installation groove 7 are adapted, the inside and outside of the mounting ring 6 are both installed with multiple groups of inverted and inclined design locking block 8, the installation groove 7 is provided with the locking groove 9, the locking groove 9 and the locking block 8 are adapted, the outer wall of the box cover 2 is installed with the sealing flange 10, in the embodiment, when using, first confirm that the box 1 and the box cover 2 are in the separated state, the mounting ring 6 on the box cover 2 is aligned with the installation groove 7 in the top end of the box 1, since the specific adapted structure mounting ring 6 and installation groove 7 are designed, ensure that both can be accurately docked, when the mounting ring 6 is inserted into the installation groove 7, multiple groups of inverted and inclined design locking block 8 on the inside and outside of the mounting ring 6 will correspond to enter the locking groove 9 in the installation groove 7, since the inclination design of locking block 8, they will automatically shrink during insertion and stretch after entering the locking groove 9, realize the limiting of locking groove 9, lock the box cover 2 on the box 1, finally, when the box cover 2 is connected with the cover body, the sealing flange 10 is folded to the edge of the box cover 2, realize the sealing of the box cover 2 and the box 1, the sealing flange 10 on the outer wall of the box cover 2 will further enhance the sealing property of the whole structure, ensure that internal environment is not affected by outside, the inner layer of the box 1 and the box cover 2 is food contact layer 3 (made of aluminium foil meeting food hygiene standard), the middle is efficient heat insulation layer 4, the outermost layer is protective layer 5 providing physical protection, this multilayer structure not only can ensure food safety, but also can effectively maintain temperature, applicable to a variety of storage and transportation needs, through the unique mounting device design (including mounting ring 6, installation groove 7, locking block 8, locking groove 9 and sealing flange 10), user can easily complete the connecting operation of the box cover 2 and the box 1, without additional tools or complex steps, the inclination design of locking block 8 and locking groove 9 not only facilitates quick locking, but also can guarantee the stability after connection, prevent accidental loosening or opening.

[0025] Preferably, in the embodiment, the side wall of the box cover 2 is installed with tear leaf 11, tear leaf 11 provides a convenient starting point, users can easily tear open the package along the preset path, before the first use of the product, the existence of tear leaf 11 can be used as a kind of anti-tamper measure, if tear leaf 11 is intact, it indicates that the package has not been opened, ensure the safety and original state of the product, increase the confidence of consumers on product quality and safety.

[0026] Preferably, in this embodiment, the surface of the food contact layer 3 is embossed to form a series of small protrusions and depressions, which helps to enhance the overall structural strength and durability of the material, reducing the risk of damage caused by external pressure.

[0027] Preferably, in this embodiment, when the thermal insulation layer 4 uses nanometer aerogel felt, its porosity is greater than 90%, and the pore size is less than 50 nm. Due to its extremely high porosity and small pore size structure, nanometer aerogel felt can greatly limit the free flow of air molecules, thereby effectively reducing heat conduction. The thermal conductivity of this material is very low, which means it performs excellently in preventing heat transfer, whether it is used to retain heat or insulate against high temperatures from the outside.

[0028] Preferably, in this embodiment, the protective layer 5 is made of PE film. PE film has good water vapor barrier properties, which can effectively prevent external moisture from entering the thermal insulation layer 4 or the food contact layer 3. PE material has good resistance to most acid, alkali and salt solutions, and is not easily reacted with chemicals, which ensures its stability and durability in various environments.

[0029] Preferably, in this embodiment, the food contact layer 3 is 10-20 μm thick. Keeping it within the range of 10-20 μm means that the amount of raw materials used can be minimized while ensuring safety and functionality. This not only reduces production costs, but also conforms to the development trend of a resource-saving society.

[0030] Preferably, in this embodiment, the thermal insulation layer 4 is 2-5 mm thick and has a thermal conductivity of less than 0.02 W / (m·K). A low thermal conductivity means that the material performs very well in preventing heat transfer. For a thermal insulation layer 4 with a thickness of 2-5 mm and a thermal conductivity of less than 0.02 W / (m·K), it can effectively slow down the rate of heat conduction, whether it is used to retain high temperature (such as heat preservation) or low temperature (such as refrigeration).

[0031] Preferably, in this embodiment, the protective layer 5 is 20-50 μm thick. Within this thickness range, the protective layer 5 can provide effective physical protection against external scratches, minor impacts and other mechanical damage to the internal thermal insulation layer 4 or food contact layer 3. At the same time, it can also resist a certain degree of chemical erosion, ensuring the durability and service life of the product.

[0032] To better illustrate the possible application scenarios, technical principles, specific implementation schemes, and the purposes and effects that can be achieved, the following will be described in detail in conjunction with the specific embodiments listed and the accompanying drawings. The embodiments described in this paper are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, but cannot limit the protection scope of the present application.

[0033] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency thermal insulation composite aluminum foil, comprising a box body (1), a box cover (2), and an installation device, characterized in that: The inner layer of the box body (1) and the box cover (2) is a food contact layer (3), the outer layer of the food contact layer (3) is a heat insulation layer (4), the outer wall of the heat insulation layer (4) is a protective layer (5), the top of the box body (1) is connected to the box cover (2) through the mounting device, the mounting device includes a mounting ring (6), a mounting groove (7), a locking block (8), a locking groove (9) and a sealing fold (10), the bottom wall of the box cover (2) is fixedly installed with the mounting ring (6), the top wall of the box body (1) is provided with the mounting groove (7), the mounting ring (6) and the mounting groove (7) are adapted to each other, the inner and outer sides of the mounting ring (6) are equipped with multiple sets of inverted and inclined locking blocks (8), the mounting groove (7) is provided in the mounting groove (7), the locking groove (9) and the locking block (8) are adapted to each other, and the outer wall of the box cover (2) is equipped with the sealing fold (10).

2. The high-efficiency thermal insulation composite aluminum foil according to claim 1, characterized in that: The side wall of the lid (2) is fitted with a tearing leaf (11).

3. The high-efficiency thermal insulation composite aluminum foil according to claim 2, characterized in that: The surface of the food contact layer (3) is embossed.

4. The high-efficiency thermal insulation composite aluminum foil according to claim 3, characterized in that: When the heat insulation layer (4) is made of nano-aerogel felt, its porosity is greater than 90% and its pore size is less than 50nm.

5. The high-efficiency thermal insulation composite aluminum foil according to claim 4, characterized in that: The protective layer (5) is made of PE film.

6. The high-efficiency thermal insulation composite aluminum foil according to claim 5, characterized in that: The thickness of the food contact layer (3) is 10-20 μm.

7. The high-efficiency thermal insulation composite aluminum foil according to claim 6, characterized in that: The insulation layer (4) has a thickness of 2-5 mm and a thermal conductivity of less than 0.02 W / (m·K).

8. The high-efficiency thermal insulation composite aluminum foil according to claim 7, characterized in that: The protective layer (5) has a thickness of 20-50 μm.

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