Flexible washable electrothermal film

Abstract

The utility model relates to a flexible washable electrothermal film, which belongs to the technical field of electrothermal films and comprises a conductive heating layer, the conductive heating layer is provided with a heating anti-drop structure, and the heating anti-drop structure comprises insulating buffer layers fixedly mounted on the upper surface and the lower surface of the conductive heating layer. A waterproof packaging layer is fixedly installed on the surface of the side, away from the conductive heating layer, of the insulating buffer layer, and an anchoring anti-falling plate is fixedly installed in the waterproof packaging layer. According to the flexible washable electrothermal film, the anchoring anti-falling plate is fixedly mounted in the waterproof packaging layer, the anchoring connecting rod penetrating through the conductive heating layer and the insulating buffer layer is fixedly mounted on the surface of the anchoring anti-falling plate, and the design of a multi-layer structure and the anchoring connecting rod is adopted, so that the layers are connected more tightly and firmly; the condition of separation and layering among the layers in multiple washing processes is effectively prevented, and the overall stability and durability of the electrothermal film are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of electrothermal film technology, specifically a flexible, water-resistant electrothermal film. Background Technology

[0002] Electric heating film is a semi-transparent polyester film that can generate heat when electricity is applied. It is made by processing and hot-pressing special conductive ink and metal current-carrying strips between two layers of insulating polyester film.

[0003] Traditional flexible electric heating films are prone to delamination, oxidation or breakage of the conductive layer after repeated washing, resulting in uneven heating or failure. Some electric heating films encapsulated with non-woven fabric or ordinary polymer have poor water resistance, and water molecules can easily penetrate into the conductive layer, affecting the electric heating performance. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a flexible, washable electric heating film with good water resistance, thus solving the problem of poor heating performance of existing electric heating films after washing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flexible, water-resistant, washable electrothermal film, comprising a conductive heating layer, wherein the conductive heating layer is provided with a heating and anti-detachment structure;

[0006] The heating and anti-detachment structure includes an insulating buffer layer fixedly installed on the upper and lower surfaces of the conductive heating layer. A waterproof encapsulation layer is fixedly installed on the side of the insulating buffer layer away from the conductive heating layer. An anchoring anti-detachment plate is fixedly installed inside the waterproof encapsulation layer. An anchoring connecting rod is fixedly installed on the surface of the anchoring anti-detachment plate. A heating and conductive component is provided inside the conductive heating layer.

[0007] Furthermore, the conductive heating layer is thermoplastic polyurethane, the insulating buffer layer is polyimide, and the waterproof encapsulation layer is silicone.

[0008] Furthermore, there are multiple anchoring anti-detachment plates, which are evenly distributed inside the two waterproof encapsulation layers.

[0009] Furthermore, the anchoring connecting rod is fixedly installed between the opposite surfaces of the two anchoring anti-detachment plates, and the anchoring connecting rod penetrates the conductive heating layer and the insulating buffer layer.

[0010] Furthermore, the heating and conductive component includes carbon nanotubes and heating wires fixedly installed inside the conductive heating layer.

[0011] Furthermore, the carbon nanotubes are multi-walled carbon nanotubes, the heating wire is a copper-nickel alloy heating wire, and the heating wire is spiral in shape.

[0012] Furthermore, a mesh tube is fixedly installed inside the conductive heating layer, and the heating wire is fixedly installed inside the mesh tube.

[0013] Furthermore, the sleeve is made of stainless steel wire mesh.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. This flexible, water-resistant electric heating film features an anchoring anti-detachment plate fixedly installed inside the waterproof encapsulation layer. An anchoring connecting rods, penetrating the conductive heating layer and the insulating buffer layer, are fixedly installed on the surface of the anchoring anti-detachment plate. The multi-layer structure and the anchoring connecting rod design make the connection between each layer tighter and more secure, effectively preventing the separation and delamination between the layers during multiple water washes, and greatly improving the overall stability and durability of the electric heating film.

[0016] 2. This flexible, washable electrothermal film, through the fixed installation of multi-walled carbon nanotubes and spiral-shaped copper-nickel alloy heating wires inside the conductive heating layer, achieves higher heating efficiency and more uniform heating. Simultaneously, a stainless steel wire mesh sleeve is fixedly installed inside the conductive heating layer, with the heating wires fixedly installed inside the sleeve. The sleeve protects and secures the heating wires, further enhancing the stability and reliability of the electrothermal film and extending its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the mesh tube structure of this utility model.

[0020] In the diagram: 1. Conductive heating layer; 2. Insulating buffer layer; 3. Waterproof encapsulation layer; 4. Anchoring anti-detachment plate; 5. Anchoring connecting rod; 6. Carbon nanotube; 7. Heating wire; 8. Sheathed mesh tube. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1 to 3The flexible water-resistant electrothermal film in this embodiment includes a conductive heating layer 1. The conductive heating layer 1 is provided with a heating anti-detachment structure. The heating anti-detachment structure includes an insulating buffer layer 2 fixedly installed on the upper and lower surfaces of the conductive heating layer 1. A waterproof encapsulation layer 3 is fixedly installed on the side of the insulating buffer layer 2 away from the conductive heating layer 1. An anchoring anti-detachment plate 4 is fixedly installed inside the waterproof encapsulation layer 3. An anchoring connecting rod 5 is fixedly installed on the surface of the anchoring anti-detachment plate 4.

[0023] Among them, the conductive heating layer 1 is thermoplastic polyurethane, the insulating buffer layer 2 is polyimide, and the waterproof encapsulation layer 3 is silicone.

[0024] It should be noted that there are multiple anchor anti-detachment plates 4, which are evenly distributed inside the two waterproof sealing layers 3. The anchor connecting rod 5 is fixedly installed between the opposite surfaces of the two anchor anti-detachment plates 4, and the anchor connecting rod 5 passes through the conductive heating layer 1 and the insulating buffer layer 2.

[0025] The conductive heating layer 1 is equipped with a heating and conductive component, which includes a carbon nanotube 6 and a heating wire 7 fixedly installed inside the conductive heating layer 1.

[0026] Among them, carbon nanotube 6 is a multi-walled carbon nanotube, and heating wire 7 is a copper-nickel alloy heating wire with a spiral shape.

[0027] It should be noted that a mesh tube 8 is fixedly installed inside the conductive heating layer 1, and the heating wire 7 is fixedly installed inside the mesh tube 8. The mesh tube 8 is made of stainless steel wire mesh.

[0028] The working principle of the above embodiments is as follows:

[0029] When the electrothermal film is working, current passes through the heating and conductive components inside the conductive heating layer 1, converting electrical energy into heat energy to achieve the heating function. The carbon nanotubes 6 have excellent electrical and thermal conductivity, enabling them to efficiently conduct current and disperse heat, resulting in more uniform heating of the electrothermal film. The spiral-shaped heating wire 7 increases its length, allowing more resistance wires to be accommodated in the same space, thus improving heating efficiency. The spiral shape also produces a more uniform heat distribution during heating. Furthermore, the spiral design allows the heating wire 7 to have pre-existing deformation allowance, reducing stress distribution during bending. To prevent localized breakage, the inner mesh tube 8 of the conductive heating layer 1 provides mechanical protection for the heating wire 7, extending its service life. When the heating film is subjected to external pressure or impact, the insulating buffer layer 2 acts as a buffer, reducing the impact on the conductive heating layer 1 and its internal heating and conductive components, thus lowering the risk of damage. The waterproof encapsulation layer 3 tightly wraps around the outside of the insulating buffer layer 2, forming a waterproof barrier that effectively prevents water molecules from penetrating. The anchoring anti-detachment plate 4 and the anchoring connecting rod 5 ensure a tight bond between the layers, forming a unified structure. During water washing, even if the heating film is subjected to external forces such as stretching or twisting, the anchoring anti-detachment structure effectively prevents the layers from separating, ensuring the stability and integrity of the heating film structure.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] 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 flexible, washable electrothermal film, comprising a conductive heating layer (1), characterized in that: The conductive heating layer (1) is provided with a heating and anti-detachment structure; The heating and anti-detachment structure includes an insulating buffer layer (2) fixedly installed on the upper and lower surfaces of the conductive heating layer (1). A waterproof encapsulation layer (3) is fixedly installed on the side of the insulating buffer layer (2) away from the conductive heating layer (1). An anchoring anti-detachment plate (4) is fixedly installed inside the waterproof encapsulation layer (3). An anchoring connecting rod (5) is fixedly installed on the surface of the anchoring anti-detachment plate (4). A heating and conductive component is provided inside the conductive heating layer (1).

2. The flexible, washable electrothermal film according to claim 1, characterized in that: The conductive heating layer (1) is thermoplastic polyurethane, the insulating buffer layer (2) is polyimide, and the waterproof encapsulation layer (3) is silicone.

3. The flexible, washable electrothermal film according to claim 1, characterized in that: The number of anchoring anti-detachment plates (4) is multiple, and the multiple anchoring anti-detachment plates (4) are evenly distributed inside the two waterproof sealing layers (3).

4. The flexible, washable electrothermal film according to claim 1, characterized in that: The anchoring connecting rod (5) is fixedly installed between the opposite surfaces of the two anchoring anti-detachment plates (4), and the anchoring connecting rod (5) penetrates the conductive heating layer (1) and the insulating buffer layer (2).

5. The flexible, washable electrothermal film according to claim 1, characterized in that: The heating and conductive component includes carbon nanotubes (6) and heating wires (7) fixedly installed inside the conductive heating layer (1).

6. The flexible, washable electrothermal film according to claim 5, characterized in that: The carbon nanotube (6) is a multi-walled carbon nanotube, and the heating wire (7) is a copper-nickel alloy heating wire with a spiral shape.

7. The flexible, washable electrothermal film according to claim 6, characterized in that: The conductive heating layer (1) has a mesh tube (8) fixedly installed inside it, and the heating wire (7) is fixedly installed inside the mesh tube (8).

8. The flexible, washable electrothermal film according to claim 7, characterized in that: The sleeve (8) is made of stainless steel wire mesh.

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