Infrared radiation heating film

Abstract

The present application provides an infrared radiation heating film. The infrared radiation heating film comprises a heating layer and an infrared emission layer and a reflection layer arranged on two opposite surfaces of the heating layer. The heating layer comprises an insulating material layer and a heating film layer coated on the insulating material layer. The heating film layer is provided with a pair of or more electrodes. The heating film layer generates heat after the electrodes are electrified. The infrared emission layer comprises a plastic layer and an NIRC infrared layer printed or coated on the plastic layer. The plastic layer is arranged close to the heating layer. The NIRC infrared layer is arranged away from the heating layer. The NIRC infrared layer is used to absorb the heat generated by the heating layer and convert it into infrared radiation. The reflection layer comprises a substrate and an aluminum layer coated or electroplated on the substrate. The reflection layer is used to reflect the infrared radiation generated by the heating layer to the infrared emission layer. By arranging the NIRC infrared layer and the reflection layer, the heat energy can be effectively converted into far infrared which is easy to be absorbed by the human body, and the heat energy utilization rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of heating film technology, and in particular to an infrared radiation heating film. Background Technology

[0002] With rapid societal development, people's demands for quality of life are increasing. Currently, many products on the market use electric heating films to provide heating. However, traditional resistance-heating electric heating films suffer from low heat utilization and significant heat loss. Furthermore, the infrared radiation they emit does not match the infrared wavelengths of the human body well, resulting in a less noticeable amount of heat and less than ideal heating performance. Utility Model Content

[0003] To address the aforementioned technical problems, this invention incorporates an NIRC infrared layer to convert the heat generated by the heating film into infrared radiation that is easily absorbed by the human body, significantly increasing the perceived temperature for the user. Simultaneously, this invention also includes a reflective layer to reflect infrared radiation emitted from the heating film on the other side back towards the NIRC infrared layer, thereby reducing heat loss from the back side and improving thermal energy utilization.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] One embodiment of this application provides an infrared radiation heating film, including a heating layer and an infrared emitting layer and a reflective layer disposed on two opposite surfaces of the heating layer;

[0006] The heating layer includes an insulating material layer and a heating film layer coated on the insulating material layer. The surface of the heating film layer is provided with one or more electrodes, and the heating film layer heats up when the electrodes are energized.

[0007] The infrared emitting layer includes a plastic layer and an NIRC infrared layer printed or coated on the plastic layer. The plastic layer is disposed adjacent to the heating layer, and the NIRC infrared layer is disposed away from the heating layer. The NIRC infrared layer is used to absorb the heat generated by the heating layer and convert it into infrared radiation.

[0008] The reflective layer includes a substrate and an aluminum layer coated or electroplated on the substrate. The reflective layer is used to reflect the infrared radiation generated by the heating layer to the infrared emitting layer.

[0009] In one embodiment, the infrared radiation heating film further includes a first adhesive layer disposed between the heating layer and the infrared emitting layer for bonding the heating layer and the infrared emitting layer together.

[0010] In one embodiment, the infrared radiation heating film further includes a second adhesive layer disposed between the heating layer and the reflective layer for bonding the heating layer and the reflective layer together.

[0011] In one embodiment, the first adhesive layer is made of thermally conductive adhesive to enhance the thermal conductivity effect between the heating layer and the infrared emitting layer;

[0012] The second adhesive layer is made of heat-insulating adhesive and is used to reduce the thermal conductivity effect between the heating layer and the reflective layer.

[0013] In one embodiment, the reflective layer is aluminized Oxford cloth or aluminized plastic film.

[0014] In one embodiment, the insulating material layer of the heating layer includes one or more of PET, TPU, TPR, and silicone.

[0015] In one embodiment, the plastic layer of the infrared emitting layer is a PET plastic film.

[0016] In one embodiment, the distance between the NIRC infrared layer in the infrared emitting layer and the heating film layer in the heating layer is less than 30 mm.

[0017] Another embodiment of this application provides an infrared radiation heating film, comprising:

[0018] A heating layer that generates heat when energized;

[0019] An infrared emitting layer is disposed on one side of the heating layer. The heat emitted by the heating layer is transferred to the infrared emitting layer by thermal conduction. The infrared emitting layer absorbs the heat transferred by the heating layer and converts it into infrared radiation.

[0020] A reflective layer is disposed on the side of the heating layer opposite to the infrared emitting layer. The reflective layer and the heating layer are isolated from the heat conduction effect. The heat emitted by the heating layer is transferred to the reflective layer by infrared radiation, and the reflective layer then reflects the infrared radiation generated by the heating layer back to the infrared emitting layer.

[0021] In one embodiment, the infrared radiation heating film further includes:

[0022] A first adhesive layer is disposed between the heating layer and the infrared emitting layer to bond the heating layer and the infrared emitting layer together.

[0023] A second adhesive layer is disposed between the heating layer and the reflective layer to bond the heating layer and the reflective layer together.

[0024] The first adhesive layer is made of thermally conductive adhesive and is used to enhance the thermal conductivity effect between the heating layer and the infrared emitting layer;

[0025] The second adhesive layer is made of heat-insulating adhesive and is used to reduce the thermal conductivity effect between the heating layer and the reflective layer.

[0026] The infrared radiation heating film provided in this application has the following beneficial effects:

[0027] This application incorporates an infrared emitting layer on the surface of the heating layer. Since this infrared emitting layer includes an NIRC infrared layer, it absorbs the heat generated by the heating layer and converts it into infrared radiation. This transforms the heat energy of the heating layer into far-infrared radiation that is more easily absorbed by the human body, significantly increasing the user's perceived temperature. Furthermore, this application incorporates a reflective layer on another surface of the heating layer. This reflective layer converts back-side radiation into forward secondary radiation, which is superimposed on the original radiation of the heating layer, reducing back-side heat loss and increasing heat utilization by over 30%. In contrast, traditional structures without a reflective layer experience heat loss of up to 40%. In one embodiment, the reflective layer substrate can be made of Oxford cloth or plastic film, which offers advantages such as lightweight and cost-effectiveness, as well as good tear resistance and puncture resistance. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an infrared radiation heating film provided in one embodiment of this application;

[0029] Figure 2 yes Figure 1 A schematic diagram of the reflective layer in the image;

[0030] Figure 3 for Figure 1 A schematic diagram of energy transfer in the infrared radiation heating film 100. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in further detail below with reference to examples and accompanying drawings.

[0032] Please see Figure 1 and Figure 2 One embodiment of this application provides an infrared radiation heating film 100. The infrared radiation heating film 100 includes a heating layer 110 and an infrared emitting layer 120 and a reflective layer 130 disposed on two opposite surfaces of the heating layer 110.

[0033] The heating layer 110 includes an insulating material layer 111 and a heating film layer 112 coated on the insulating material layer 111. One or more electrodes are disposed on the surface of the heating film layer 112. The heating film layer 112 heats up when the electrodes are energized.

[0034] The infrared emitting layer 120 includes a plastic layer 121 and an NIRC infrared layer 122 printed or coated on the plastic layer 121. The plastic layer 121 is disposed adjacent to the heating layer 110. The NIRC infrared layer 122 is disposed away from the heating layer 110. The NIRC infrared layer 122 is used to absorb the heat generated by the heating layer 110 and convert it into far-infrared radiation. In this embodiment, the plastic layer 121 is a PET plastic film.

[0035] The reflective layer 130 includes a substrate 131 and an aluminum layer 132 coated or electroplated on the substrate 131. The reflective layer 130 is used to reflect the infrared radiation generated by the heating layer 110 to the infrared emitting layer 120. The infrared emitting layer 120 absorbs the infrared radiation reflected by the reflective layer 130 and converts it into far-infrared radiation, which is more easily absorbed by the human body.

[0036] In the infrared radiation heating film 100 provided in this application, an infrared emitting layer 120 is provided on the surface of the heating layer 110. Since the infrared emitting layer 120 includes an NIRC infrared layer 122, the NIRC infrared layer 122 can absorb the heat generated by the heating layer 110 and convert it into infrared radiation. This transforms the heat energy of the heating layer 110 into infrared radiation that is more easily absorbed by the human body, significantly increasing the user's perceived temperature. Furthermore, this application provides a reflective layer 130 on another surface of the heating layer 110. The reflective layer 130 can convert the back radiation energy into forward secondary radiation, which is superimposed on the original radiation of the heating layer 130, reducing back heat loss and improving heat utilization efficiency by more than 30%. In contrast, the heat loss of a traditional structure without a reflective layer reaches 40%.

[0037] Understandably, the NIRC infrared layer 122 in this application uses a nano-infrared radiative cooling (NIRC) material. This NIRC material has better thermal radiation conversion efficiency. In this embodiment, the NIRC infrared layer 122 is a nano-infrared heat dissipation coating printed or coated on the plastic layer 121. Specifically, the nano-infrared heat dissipation coating includes 30-50 parts of infrared radiation powder, 25-35 parts of thermally conductive powder, 20-40 parts of binder, and 0.5-2 parts of dispersant.

[0038] The infrared radiation powder comprises the following raw materials in the following mass ratios:

[0039] The mass ratio of aluminum nitride, boron nitride, titanium dioxide, and ferric oxide is 15–40: 20–25: 10–30: 20–40.

[0040] The thermally conductive powder is one or more of graphite, carbon nanotubes, and graphene.

[0041] The adhesive is epoxy resin or polyacrylate.

[0042] The dispersant is one or more of polyacrylamide, polyoxyethylene ether, and polyvinyl alcohol.

[0043] In the fabrication process of the infrared emitting layer 120, infrared radiation powder, thermally conductive powder, water, and dispersant are first mixed, and a binder is added to obtain a nano-infrared heat dissipation coating. Then, the nano-infrared heat dissipation coating is printed or coated onto the plastic layer 121 and cured to obtain the infrared emitting layer 120.

[0044] The NIRC infrared layer 122 has high far-infrared emissivity and good far-infrared irradiation temperature rise characteristics.

[0045] Please refer to Table 1, which shows the far-infrared emissivity test results for the NIRC infrared layer 122. The corresponding test conditions are as follows:

[0046] The test hot plate was heated to 48℃, 77℃, 100℃, and 120℃.

[0047] Place the standard blackbody plate on the test hot plate, and record the far-infrared radiation intensity of the standard blackbody after the test value stabilizes.

[0048] Place the sample on the hot plate and record the far-infrared radiation intensity of the sample after the test value stabilizes (e.g., 15 minutes).

[0049] Table 1

[0050]

[0051] As can be seen, when the temperature of the test hot plate is 48°C, the far-infrared emissivity of the NIRC infrared layer 122 exceeds 88%. And when the temperature of the test hot plate is 120°C, the far-infrared emissivity of the NIRC infrared layer 122 exceeds 98%.

[0052] This demonstrates that the NIRC infrared layer 122 has high far-infrared emissivity characteristics.

[0053] Please refer to Table 2, which shows the test results for the far-infrared irradiation temperature rise of the NIRC infrared layer 122. The corresponding test conditions are as follows:

[0054] Adjust the distance between the sample holder and the radiation source so that the distance from the sample surface to the radiation source is 5mm, 10mm, 20mm, or 30mm.

[0055] Clamp the sample in the sample holder with the black coating side of the sample to be tested facing the infrared radiation source. Fix the sensor contact of the thermometer at the center of the irradiated area of ​​the sample surface.

[0056] Record the initial temperature of the sample surface. Ideally, this should be done at room temperature (25°C).

[0057] Turn on the far-infrared radiation source and record the surface temperature of the sample after irradiation for 5 min, 10 min, and 15 min.

[0058] Table 2

[0059]

[0060] As can be seen, when the distance between the sample surface and the radiation source is 5 mm, the sample temperature rises rapidly, increasing from 25.3℃ to 85.7℃ within 5 minutes. After 15 minutes, the sample temperature rises to 90.8℃.

[0061] When the distance between the sample surface and the radiation source was 30 mm, the temperature rise of the sample was slightly slower than when the distance was 5 mm. It rose from 25.5℃ to 73.9℃ within 5 minutes. After 15 minutes, the sample temperature rose to 82.1℃.

[0062] Therefore, it can be seen that the NIRC infrared layer 122 has high far-infrared emissivity characteristics.

[0063] Understandably, in one embodiment, the infrared radiant heating film 100 further includes a first adhesive layer 140. The first adhesive layer 140 is disposed between the heating layer 110 and the infrared emitting layer 120. The first adhesive layer 140 is used to bond the heating layer 110 and the infrared emitting layer 120 together.

[0064] Understandably, in one embodiment, the infrared radiation heating film 100 further includes a second adhesive layer 150. The second adhesive layer 150 is disposed between the heating layer 110 and the reflective layer 130. The second adhesive layer 150 is used to bond the heating layer 110 and the reflective layer 130 together.

[0065] In one embodiment, the first adhesive layer 140 is made of a thermally conductive adhesive to enhance the thermal conductivity between the heating layer 110 and the infrared emitting layer 120. The thermally conductive adhesive includes thermally conductive silicone or thermally conductive epoxy resin, etc.

[0066] The second adhesive layer 150 is made of heat-insulating adhesive and is used to reduce the thermal conductivity effect between the heating layer 110 and the reflective layer 130. The heat-insulating adhesive includes polyurethane heat-insulating adhesive or vulcanized silicone rubber heat-insulating adhesive, etc.

[0067] In one embodiment, the reflective layer 130 is aluminized Oxford cloth or aluminized plastic film. In this embodiment, the substrate is selected as Oxford cloth or plastic film, which has the advantages of being lightweight and economical, and also has good tear resistance and puncture resistance, thereby giving the reflective layer 130 good mechanical properties.

[0068] In one embodiment, the insulating material layer 111 of the heating layer 110 includes one or more of PET, TPU, TPR, and silicone. Specifically, the manufacturing process of the heating layer 110 is as follows:

[0069] After coating a resistive paste onto the surface of an insulating material such as PET, TPU, TPR, or silicone, and then drying it, a heating film layer is formed. One or more electrodes are then attached to the surface of the heating film layer. The insulating material layer has the advantage of high reliability. The TPU / silicone substrate has high elongation and can be bent multiple times. The insulating substrate has a withstand voltage >3kV / mm, effectively preventing the risk of leakage. Simultaneously, the integrated design of the heating layer and electrodes also avoids problems with poor contact.

[0070] As needed, the distance between the NIRC infrared layer 122 in the infrared emitting layer 120 and the heating film layer 112 in the heating layer 110 is less than 30 mm. In this embodiment, when the distance between the NIRC infrared layer 122 and the heating film layer 112 is less than 30 mm, on the one hand, the NIRC infrared layer 122 can receive heat from the heating film layer 112 through thermal conduction. On the other hand, the NIRC infrared layer 122 can also receive heat from the heating film layer 112 through infrared radiation, thereby making the heat utilization rate of the heating film layer 112 higher.

[0071] Figure 3 This is a schematic diagram of energy transfer in the infrared radiation heating film 100 of this application.

[0072] When the electrodes of the heating layer 110 are energized, the heating layer 110 generates Joule heat.

[0073] The Joule heat generated by the heating layer 110 is transferred to the emitting layer 120 through heat conduction. The emitting layer 120 converts the heat transferred by the heating layer 110 into far-infrared radiation and dissipates it to the outside.

[0074] The reflective layer 130 and the heating layer 110 are separated by a heat insulation layer to block the heat conduction effect.

[0075] The Joule heat generated by the heating layer 110 is transferred to the reflective layer 130 via infrared radiation. The reflective layer 130 reflects the infrared radiation generated by the heating layer 110 back to the emitting layer 120, thereby superimposing it with the original radiation from the heating layer 110 and reducing heat loss on the back side. The infrared emitting layer 120 absorbs the infrared radiation reflected by the reflective layer 130 and converts it into far-infrared radiation, making it easier for the human body to absorb. Conversely, the Joule heat generated by the heating layer 110 is transferred to the emitting layer 120 via infrared radiation. The infrared emitting layer 120 absorbs the infrared radiation from the heating layer 110 and converts it into far-infrared radiation, making it easier for the human body to absorb.

[0076] Another embodiment of this application provides an infrared radiation heating film. The infrared radiation heating film includes:

[0077] A heating layer that generates heat when energized;

[0078] An infrared emitting layer is disposed on one side of the heating layer. The heat emitted by the heating layer is transferred to the infrared emitting layer by thermal conduction. The infrared emitting layer absorbs the heat transferred by the heating layer and converts it into infrared radiation.

[0079] A reflective layer is disposed on the side of the heating layer opposite to the infrared emitting layer. The reflective layer and the heating layer are isolated from the heat conduction effect. The heat emitted by the heating layer is transferred to the reflective layer by infrared radiation, and the reflective layer then reflects the infrared radiation generated by the heating layer back to the infrared emitting layer.

[0080] In one embodiment, the infrared radiation heating film further includes:

[0081] A first adhesive layer is disposed between the heating layer and the infrared emitting layer to bond the heating layer and the infrared emitting layer together.

[0082] A second adhesive layer is disposed between the heating layer and the reflective layer to bond the heating layer and the reflective layer together.

[0083] The first adhesive layer is made of thermally conductive adhesive and is used to enhance the thermal conductivity effect between the heating layer and the infrared emitting layer;

[0084] The second adhesive layer is made of heat-insulating adhesive and is used to reduce the thermal conductivity effect between the heating layer and the reflective layer.

[0085] Understandably, the infrared radiation heating film provided in the above embodiments can be used as an infrared heating film for trucks, featuring uniform heating, thinness, flexibility, safety, and convenience. Due to its high electrothermal conversion efficiency and infrared radiation coefficient, the NIRC heating film releases far-infrared light that is easily absorbed by the human body on its surface along the conversion path of "electrical energy-thermal energy-light energy," thereby significantly increasing the perceived temperature.

[0086] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An infrared radiation heating film, characterized in that, It includes a heating layer and an infrared emitting layer and a reflective layer disposed on two opposite surfaces of the heating layer; The heating layer includes an insulating material layer and a heating film layer coated on the insulating material layer. The surface of the heating film layer is provided with one or more electrodes, and the heating film layer heats up when the electrodes are energized. The infrared emitting layer includes a plastic layer and an NIRC infrared layer printed or coated on the plastic layer. The plastic layer is disposed adjacent to the heating layer, and the NIRC infrared layer is disposed away from the heating layer. The NIRC infrared layer is used to absorb the heat generated by the heating layer and convert it into infrared radiation. The reflective layer includes a substrate and an aluminum layer coated or electroplated on the substrate. The reflective layer is used to reflect the infrared radiation generated by the heating layer to the infrared emitting layer.

2. The infrared radiation heating film according to claim 1, characterized in that, It also includes a first adhesive layer, which is disposed between the heating layer and the infrared emitting layer to bond the heating layer and the infrared emitting layer together.

3. The infrared radiation heating film according to claim 2, characterized in that, It also includes a second adhesive layer, which is disposed between the heating layer and the reflective layer to bond the heating layer and the reflective layer together.

4. The infrared radiation heating film according to claim 3, characterized in that, The first adhesive layer is made of thermally conductive adhesive and is used to enhance the thermal conductivity effect between the heating layer and the infrared emitting layer; The second adhesive layer is made of heat-insulating adhesive and is used to reduce the thermal conductivity effect between the heating layer and the reflective layer.

5. The infrared radiation heating film according to claim 1, characterized in that, The reflective layer is made of aluminized Oxford cloth or aluminized plastic film.

6. The infrared radiation heating film according to claim 1, characterized in that, The insulating material layer of the heating layer includes one or more of PET, TPU, TPR, and silicone.

7. The infrared radiation heating film according to claim 1, characterized in that, The plastic layer of the infrared emitting layer is a PET plastic film.

8. The infrared radiation heating film according to claim 1, characterized in that, The distance between the NIRC infrared layer in the infrared emitting layer and the heating film layer in the heating layer is less than 30 mm.

9. An infrared radiation heating film, characterized in that, include: A heating layer that generates heat when energized; An infrared emitting layer is disposed on one side of the heating layer. The heat emitted by the heating layer is transferred to the infrared emitting layer by thermal conduction. The infrared emitting layer absorbs the heat transferred by the heating layer and converts it into infrared radiation. A reflective layer is disposed on the side of the heating layer opposite to the infrared emitting layer. The reflective layer and the heating layer are isolated from the heat conduction effect. The heat emitted by the heating layer is transferred to the reflective layer by infrared radiation, and the reflective layer then reflects the infrared radiation generated by the heating layer back to the infrared emitting layer.

10. The infrared radiation heating film according to claim 9, characterized in that, Also includes: A first adhesive layer is disposed between the heating layer and the infrared emitting layer to bond the heating layer and the infrared emitting layer together. A second adhesive layer is disposed between the heating layer and the reflective layer to bond the heating layer and the reflective layer together. The first adhesive layer is made of thermally conductive adhesive and is used to enhance the thermal conductivity effect between the heating layer and the infrared emitting layer; The second adhesive layer is made of heat-insulating adhesive and is used to reduce the thermal conductivity effect between the heating layer and the reflective layer.

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