Heat insulation type aluminum laminated film

Abstract

The utility model relates to the technical field of aluminum laminated films, in particular to a heat insulation type aluminum laminated film, which is characterized in that when the temperature reaches a preset temperature, the aluminum laminated film protrudes outwards due to the influence of hardness and strip-shaped grooves, so that a bottom film and a plating bearing layer are far away from each other, the heat transfer is favorably reduced, and the heat insulation effect of the aluminum laminated film is realized. In addition, the channels distributed along the hot-pressing line after the gap bulges can also be used for air flow to achieve the effect of improving the heat dissipation performance of the aluminum laminated film. Comprising a bottom film, a plating bearing layer, thermal expansion filler and an aluminum film plating layer, the plating bearing layer is located on the top face of the bottom film, the plating bearing layer is attached to the bottom film through a hot pressing line, a gap is formed between the plating bearing layer and the bottom film, the gap is filled with the thermal expansion filler, and the aluminum film plating layer is attached to the plating bearing layer on the surface of the plating bearing layer.

Description

Technical Field

[0001] The utility model relates to the field of aluminized films, and in particular to a heat-insulating aluminized film. Background Art

[0002] Under high vacuum, molten metal aluminum is evaporated by high temperature, and the aluminum vapor is deposited and accumulated on the surface of the plastic film to obtain an aluminized film. The surface of the film has a metallic luster, and it retains the characteristics of the plastic film, as well as excellent moisture-proof, heat-resistant, and puncture-resistant properties.

[0003] The existing aluminized film has a single structure and its heat dissipation and heat insulation are not ideal (reference can be made to the ultra-thin low-temperature heat-sealing aluminized film with the application number 202121825518.0, which introduces this problem in the background art). Therefore, the purpose of the present utility model is to improve the existing aluminized film structure to solve the above technical problems. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a heat-insulating aluminized film to solve the problems mentioned in the background art.

[0005] To achieve the above purpose, the present utility model provides the following technical solutions: including a bottom film, a bearing layer, a thermal expansion filler, and an aluminum film coating layer. The bearing layer is located on the top surface of the bottom film. The bearing layer is attached to the bottom film through a heat pressing line. A gap is formed between the bearing layer and the bottom film. The thermal expansion filler is filled in the gap. The aluminum film coating layer is attached to the surface of the bearing layer and is in contact with the bearing layer.

[0006] To optimize the above technical solution, a further measure is taken: strip-shaped grooves are formed on the contact surface between the bottom film and the bearing layer, and the strip-shaped grooves are provided to improve the deformation ability of the bottom film.

[0007] As a further improvement to the above technical solution: the strip-shaped grooves are distributed vertically and horizontally on the bottom film, and the intersecting strip-shaped grooves contribute to the uniformity of the deformation ability of the bottom film.

[0008] As a further improvement to the technical solution: the heat pressing lines are distributed in a honeycomb shape, and the honeycomb-shaped heat pressing lines ensure that the aluminized film has good bending performance after the thermal expansion filler expands.

[0009] As an improvement to the foregoing technical solution: the hardness of the bottom film is less than the hardness of the bearing layer to ensure that when the thermal expansion filler expands.

[0010] From the above description of the structure of the present utility model, compared with the prior art, the present utility model has the following advantages:

[0011] A heat-insulating aluminized film provided by the present utility model, when the temperature reaches the preset temperature, due to the influence of hardness and strip-shaped grooves, the aluminized film bulges outward, causing the bottom film and the coating layer to move away from each other, which helps to reduce heat transfer and thus achieve the heat-insulating effect of the aluminized film. In addition, the channels distributed along the heat-sealing line after the gap bulges can also serve as air flow channels to improve the heat dissipation performance of the aluminized film. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0013] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0014] Figure 2 is a three-dimensional structure schematic diagram of the present utility model;

[0015] Figure 3 is a partial cross-sectional structure schematic diagram of the present utility model;

[0016] In the figure: bottom film - 1, strip-shaped groove - 101, coating layer - 2, heat-sealing line - 201, gap - 202, thermal expansion filler - 3, aluminum film coating - 4 DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Embodiment

[0019] Please refer to Figures 1-3 , the present utility model provides a heat-insulating aluminized film, including a bottom film 1, a coating layer 2, a thermal expansion filler 3 and an aluminum film coating 4. Strip-shaped grooves 101 are formed on the contact surface between the bottom film 1 and the coating layer 2, and the strip-shaped grooves 101 are distributed on the bottom film 1 in a criss-cross manner.

[0020] The coating layer 2 is located on the top surface of the bottom film 1. The coating layer 2 is attached to the bottom film 1 through heat-sealing lines 201. The heat-sealing lines 201 are distributed in a honeycomb shape. A gap 202 is formed between the coating layer 2 and the bottom film 1 through the separation of the heat-sealing lines 201. The hardness of the bottom film 1 is less than that of the coating layer 2. The heat-sealing lines 201 refer to the linear features obtained through hot pressing.

[0021] The heat expansion filler 3 is filled in the gap 202. The heat expansion filler 3 can expand in volume after being heated. The honeycomb-shaped heat pressing lines 201 isolate the heat expansion fillers 3 from each other and do not affect the bending flexibility of the aluminum-plated film.

[0022] The aluminum film coating 4 is bonded to the receiving coating 2 on the surface of the receiving coating 2 .

[0023] The thermal expansion filler 3 refers to a filler that can decompose and expand in volume after reaching a certain temperature. During implementation, technicians can select materials with different thermal decomposition temperatures according to actual needs, and ammonium carbonate and ammonium bicarbonate are preferably used.

[0024] Working principle: Under low temperature conditions, the heat-expandable fillers 3 are in a stable state and adjacent heat-expandable fillers 3 are spaced apart by the hot pressing line 201 . The heat-expandable fillers 3 will not affect the bending flexibility of the aluminum-plated film.

[0025] After the temperature reaches the heat expansion filler 3, the heat expansion filler 3 decomposes and expands in volume, so that the gap 202 is stretched. Since the hardness of the base film 1 is less than the hardness of the supporting coating 2 and a strip groove 101 is provided on the base film 1, the base film 1 will bulge outward after the heat expansion filler 3 decomposes and expands in volume. After the bulge, the gap 202 expands and makes the base film 1 and the supporting coating 2 move away from each other, which helps to reduce the heat transfer between the base film 1 and the supporting coating 2 and play a heat insulation effect. At the same time, since the gap 202 bulges, a channel for air flow will be formed at the hot pressing line 201, which increases the contact area between the aluminum-plated film and the air, and can improve the heat dissipation performance of the aluminum-plated film.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat-insulating aluminum-plated film, wherein the characteristics include: Base film (1); A receiving coating layer (2), the receiving coating layer (2) is located on the top surface of the base film (1), the receiving coating layer (2) is bonded to the base film (1) via a hot pressing line (201), and a gap (202) is formed between the receiving coating layer (2) and the base film (1); A thermal expansion filler (3), the thermal expansion filler (3) is filled in the gap (202); An aluminum film coating (4) is bonded to the supporting coating (2) on the surface of the supporting coating (2).

2. The heat-insulating aluminum-plated film according to claim 1, characterized in that: A strip-shaped groove (101) is formed on the contact surface between the base film (1) and the supporting coating layer (2).

3. The heat-insulating aluminum-plated film according to claim 2, characterized in that: The strip-shaped grooves (101) are distributed on the base film (1) in a crisscross pattern.

4. A heat-insulating aluminum-plated film according to any one of claims 1 to 3, characterized in that: The hot pressing lines (201) are distributed in a honeycomb shape.

5. A heat-insulating aluminum-plated film according to any one of claims 1 to 3, characterized in that: The hardness of the base film (1) is less than the hardness of the supporting coating (2).

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