Reversible multi-section color-changing sticker

Abstract

The utility model relates to a reversible multi-section color-changing sticker, which relates to the field of temperature-sensing color-changing stickers, and comprises a protective layer shell and a temperature-sensing material group, the protective layer shell is provided with a placing groove, and the temperature-sensing material group is successively placed at the bottom of the placing groove according to different sensitive degrees to temperature. A placing groove is formed in the protective layer shell, a heat-conducting metal thin layer is arranged at the groove bottom of the placing groove, an annular adhesive groove is formed in the protective layer shell, an adhesive layer is arranged in the adhesive groove, and the placing groove is located on the inner side of the adhesive groove. By arranging a plurality of groups of different temperature sensing materials, a specific temperature interval can be displayed according to different color development states of different temperature sensing materials at the same temperature, use by people is facilitated, the heat conduction metal thin layer is in contact with an object to be adhered, the heat conduction effect is good, and the service life of the heat conduction metal thin layer is prolonged. And the temperature warning precision of the color-changing sticker is prevented from being influenced by poor thermal conductivity of the adhesive layer.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature-sensitive color-changing stickers, in particular to a reversible multi-stage color-changing sticker. Background Art

[0002] The color change principle of thermochromic stickers is mainly based on two types of thermochromic materials; thermochromic materials and thermochromic dyes. Both materials can cause color changes within a certain temperature range. This is because their optical properties or the nature of chemical bonds are very sensitive to temperature. Among them, thermochromic materials will undergo a crystal phase change when the temperature rises, resulting in a change in the intensity of light reflected or absorbed at a specific wavelength in the visible spectrum. Since this process affects the color of the material, its color will also change accordingly. This material is often used to make temperature indicators, such as temperature-sensitive stickers, which indirectly reflect the temperature through color changes.

[0003] At present, a Chinese utility model patent application with publication date of April 10, 2020 and publication number CN210295650U proposes a thermochromic sticker. The thermochromic sticker achieves the purpose of anti-counterfeiting and anti-theft through color difference after tearing off the surface layer by setting a peeling layer on the upper surface of the adhesive layer. The temperature-sensitive material layer set on the surface of the surface layer produces an irreversible color change effect after heating, thereby achieving the effect of anti-counterfeiting.

[0004] However, the application scope of the color-changing stickers proposed in the prior art is relatively limited, and they can only achieve the effect of temperature warning for a certain specific temperature. In addition, the sticker is directly adhered to the object to be adhered through the adhesive layer. Since the thermal conductivity of the adhesive layer is poor, the temperature warning accuracy of the color-changing sticker is affected. Utility Model Content

[0005] In order to increase the application scope of the color-changing sticker and improve the temperature warning accuracy of the color-changing sticker, the utility model provides a reversible multi-stage color-changing sticker.

[0006] The utility model provides a reversible multi-stage color-changing sticker, which includes a protective layer shell and a temperature-sensitive material group, wherein a placement groove is provided on the protective layer shell, and the temperature-sensitive material group is placed at the bottom of the placement groove in sequence according to different sensitivities to temperature, and a heat-conducting metal thin layer is provided at the bottom of the placement groove, an annular adhesive groove is provided on the protective layer shell, an adhesive layer is provided in the adhesive groove, the placement groove is located on the inner side of the adhesive groove, a first release paper is provided on the side of the adhesive layer away from the protective layer shell, a sealing rubber pad is provided on the protective layer shell, and the adhesive groove is located on the inner side of the sealing rubber pad.

[0007] When in use, firstly, the first release paper and the second release paper are removed from the adhesive layer and the sealing rubber pad respectively, and attached to the object to be attached through the adhesive layer. At the same time, a sealing rubber pad is provided on the outer side of the adhesive groove, wherein the sealing rubber pad is higher than the adhesive layer and the heat-conducting metal thin layer, and the sealing rubber pad is made of elastic rubber material. When the color-changing sticker is attached to the object to be attached, the elastic rubber pad is compressed and tightly pressed against the side wall of the object to be attached, and at the same time, external water vapor is prevented from drilling into the color-changing sticker, thereby improving the adhesion firmness of the color-changing sticker. At the same time, one side of the heat-conducting metal thin layer is directly in contact with the temperature-sensitive material group, and the other side is in contact with the object to be attached. Since the pure copper sheet has good ductility and thermal conductivity, the problem of poor thermal conductivity caused by directly passing through the adhesive layer in the prior art can be avoided, thereby improving the temperature warning accuracy of the color-changing sticker.

[0008] The temperature sensing material groups are placed at the bottom of the placement slot in sequence according to their different sensitivity to temperature. The arrangement order is from the most sensitive to temperature to the least sensitive to temperature. The interval range is from thirty degrees to eighty degrees. The specific range can be adjusted according to different temperature sensing materials in actual use. Taking fifty-five degrees Celsius as an example, the temperature sensing materials with temperature warning signs below fifty-five degrees Celsius will change color, and the temperature sensing materials with temperature warning signs above fifty-five degrees Celsius will not change color. On the contrary, the specific temperature range is displayed according to the different color states of different temperature sensing materials at the same temperature, which is convenient for people to use and the operation is simple and convenient.

[0009] Optionally, one side of the thermally conductive metal thin layer is directly in contact with the temperature sensitive material group, and the other side is in contact with the object to be adhered, the height of the adhesive layer protruding from the protective layer shell is higher than the height of the thermally conductive metal thin layer protruding from the protective layer shell, and the height of the sealing rubber pad protruding from the protective layer shell is higher than the height of the adhesive layer protruding from the protective layer shell.

[0010] By adopting the above technical solution, since the height of the adhesive layer protruding from the protective layer shell is higher than the height of the heat-conducting metal thin layer protruding from the protective layer shell, the adhesive layer will be compressed when the adhesive layer is actually adhered to the object to be adhered. Here, the height of the adhesive layer is controlled to be flush with the height of the heat-conducting metal thin layer protruding from the protective layer shell after compression, so as to ensure that the side of the heat-conducting metal thin layer away from the protective layer shell is in full contact with the side wall of the object to be adhered, and the heat conduction effect is better. At the same time, the height of the sealing rubber pad protruding from the protective layer shell is higher than the height of the adhesive layer protruding from the protective layer shell. The height of the shell, wherein the elasticity of the sealing rubber pad is better, and after the second release paper is peeled off, the sealing rubber pad is tightly attached to the side wall of the object to be adhered, and the adhesive groove is located on the inner side of the sealing rubber pad, wherein an annular cavity gap is left between the adhesive layer and the sealing rubber pad, and when the sealing rubber pad and the adhesive layer are both tightly attached to the side wall of the object to be adhered, the gas in the annular cavity gap is squeezed out, and the annular cavity gap forms a sealed cavity. At this time, the external air pressure is greater than the air pressure of the sealed cavity, so that the color-changing sticker is further firmly attached to the object with adhesion.

[0011] Optionally, the protective layer shell is made of transparent material.

[0012] By adopting the above technical solution, the protective layer shell protects the temperature sensing material group, prevents the temperature sensing material group from being affected by the external environment, and prevents it from being damp, oxidized, and photolyzed. At the same time, the protective layer shell made of transparent material makes it easy for people to observe the color change of the temperature sensing material group after heating. The specific temperature range can be displayed more intuitively and conveniently according to the different colors presented by multiple sections of different temperature sensing materials at a certain temperature. The operation is simple and convenient.

[0013] Optionally, a plurality of clamping grooves are opened on the inner wall of the placement groove, and the temperature-sensitive material group and the heat-conductive metal thin layer are provided with a plurality of clamping blocks corresponding to the plurality of clamping grooves, and the plurality of clamping blocks are clamped in the clamping grooves.

[0014] By adopting the above technical solution, it is convenient to firmly clamp the temperature-sensitive material group and the heat-conductive metal thin layer in the protective layer shell, prevent the temperature-sensitive material group and the heat-conductive metal thin layer from shifting in the protective layer shell, and prevent the temperature-sensitive material group and the heat-conductive metal thin layer from shifting, which affects the temperature warning accuracy of the color-changing sticker.

[0015] Optionally, temperature warning marks are respectively provided on the protective layer shell corresponding to the temperature-sensitive material groups.

[0016] By adopting the above technical solution, different temperature warning signs correspond to the critical values ​​of color change of different temperature-sensitive materials when heated, so that the specific temperature range can be displayed more intuitively and conveniently according to the different colors presented by multiple sections of different temperature-sensitive materials at a certain temperature.

[0017] Optionally, the thermally conductive metal thin layer is made of pure copper sheet.

[0018] By adopting the above technical solution, due to the good ductility and thermal conductivity of the pure copper sheet, one side of the thermally conductive metal thin layer is directly in contact with the temperature sensitive material group and the other side is in contact with the object to be adhered, and at the same time, objects to be adhered of different shapes can be fully adhered.

[0019] Optionally, a second release paper is provided on a side of the sealing rubber pad away from the protective layer shell.

[0020] By adopting the above technical solution, the second release paper plays a role of moisture-proof, oil-proof and anti-sticking, preventing the end of the sealing rubber pad away from the protective layer shell from being affected by dust, oil stains and hair debris, and plays a role of isolating the sealing rubber pad. At the same time, the first release paper is used to prevent the adhesive layer from being affected by dust, oil stains and hair debris, thereby ensuring the stickiness of the adhesive layer.

[0021] In summary, the utility model includes at least one of the following beneficial technical effects:

[0022] 1. In the present invention, by providing a plurality of groups of different temperature-sensitive materials, the specific temperature range can be displayed according to the different color development states of different temperature-sensitive materials at the same temperature, which is convenient for people to use.

[0023] 2. The utility model has a placement groove in the protective layer shell, and different thermal insulation materials are placed in the placement groove in the form of multi-stage intervals. A heat-conducting metal thin layer is arranged at the notch of the placement groove, and one side of the heat-conducting metal thin layer is directly in contact with the temperature-sensitive material group, and the other side is in contact with the object to be adhered, so the heat conduction effect is better, avoiding the influence of the temperature warning accuracy of the color-changing sticker due to the poor thermal conductivity of the adhesive layer.

[0024] 3. The utility model provides an adhesive groove on the outside of the installation groove, places the adhesive in the adhesive layer, and peels off the release layer, so that the color-changing sticker can be attached to the object to be attached through the adhesive layer. At the same time, a sealing rubber pad is provided on the outside of the adhesive groove, wherein the sealing rubber pad is higher than the adhesive layer and the heat-conducting metal thin layer, and the sealing rubber pad is made of elastic rubber. When the color-changing sticker is attached to the object to be attached, the elastic rubber pad is compressed and tightly pressed against the side wall of the object to be attached, and at the same time, external water vapor is prevented from entering the color-changing sticker to affect the adhesion firmness of the color-changing sticker. The operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a reversible multi-segment color-changing sticker;

[0026] Figure 2 yes Figure 1 Rear view in;

[0027] Figure 3 It is a cross-sectional view of a reversible multi-segment color-changing sticker;

[0028] Figure 4 yes Figure 3 A magnified view of part A in FIG.

[0029] Figure 5 This is a package diagram of a reversible multi-segment color-changing sticker in its unused state.

[0030] Explanation of the accompanying drawings: 1. Protective layer shell; 2. Temperature sensing material group; 3. Temperature warning mark; 4. Placement slot; 5. Card setting block; 6. Thermal conductive metal thin layer; 7. Adhesive slot; 8. Adhesive layer; 9. Sealing rubber pad; 10. First release paper. DETAILED DESCRIPTION

[0031] The following combination Figure 1-Figure 5 The utility model is described in further detail.

[0032] This embodiment discloses a reversible multi-stage color-changing sticker: Figure 1-Figure 5 A reversible multi-stage color-changing sticker includes a protective layer shell 1 and a temperature-sensitive material group 2. The protective layer shell 1 is provided with a placement slot 4. The temperature-sensitive material group 2 is placed at the bottom of the placement slot 4 in sequence according to different temperature sensitivities. The arrangement order is from high temperature sensitivity to low temperature sensitivity. The range is from thirty degrees to eighty degrees. The specific range can be adjusted according to different temperature-sensitive materials in actual use. Taking fifty-five degrees Celsius as an example, the temperature-sensitive materials of the temperature warning mark 3 below fifty-five degrees Celsius will change color, and the temperature-sensitive materials of the temperature warning mark 3 above fifty-five degrees Celsius will not change color. On the contrary, the specific temperature range is displayed according to the different color states of different temperature-sensitive materials at the same temperature.

[0033] Reference Figure 2 and Figure 3 A heat-conducting metal thin layer 6 is arranged at the bottom of the placement groove 4, an annular adhesive groove 7 is opened on the protective layer shell 1, and an adhesive layer 8 is arranged in the adhesive groove 7. The placement groove 4 is located on the inner side of the adhesive groove 7, and a first release paper 10 is arranged on the side of the adhesive layer 8 away from the protective layer shell 1, and a second release paper is arranged on the side of the sealing rubber pad 9 away from the protective layer shell 1. First, the first release paper 10 and the second release paper are respectively removed from the adhesive layer 8 and the sealing rubber pad 9, and attached to the object to be adhered through the adhesive layer 8. At the same time, a sealing rubber pad 9 is arranged on the outer side of the adhesive groove 7, wherein the sealing rubber pad 9 is higher than the adhesive layer 8 and the heat-conducting metal thin layer 6, and the sealing rubber pad 9 is made of elastic rubber. When the color-changing sticker is attached to the object to be attached, the elastic rubber pad is compressed and tightly pressed against the side wall of the object to be adhered.

[0034] Reference Figure 2 and Figure 4 A sealing rubber pad 9 is provided on the protective layer shell 1, and the adhesive groove 7 is located on the inner side of the sealing rubber pad 9. The height of the sealing rubber pad 9 protruding from the protective layer shell 1 is higher than the height of the adhesive layer 8 protruding from the protective layer shell 1, wherein the sealing rubber pad 9 has better elasticity. After the second release paper is peeled off, the sealing rubber pad 9 is tightly attached to the side wall of the object to be adhered, and the adhesive groove 7 is located on the inner side of the sealing rubber pad 9, wherein an annular cavity gap is left between the adhesive layer 8 and the sealing rubber pad 9. When the sealing rubber pad 9 and the adhesive layer 8 are both tightly attached to the side wall of the object to be adhered, the gas in the annular cavity gap is squeezed out, and the annular cavity gap forms a sealed cavity. At this time, the external air pressure is greater than the air pressure of the sealed cavity.

[0035] Reference Figure 3 and Figure 4, one side of the heat-conducting metal thin layer 6 is directly in contact with the temperature-sensitive material group 2, and the other side is in contact with the object to be adhered, the height of the adhesive layer 8 protruding from the protective layer shell 1 is higher than the height of the heat-conducting metal thin layer 6 protruding from the protective layer shell 1, the height of the sealing rubber pad 9 protruding from the protective layer shell 1 is higher than the height of the adhesive layer 8 protruding from the protective layer shell 1, the height of the adhesive layer 8 protruding from the protective layer shell 1 is higher than the height of the heat-conducting metal thin layer 6 protruding from the protective layer shell 1, and the height of the adhesive layer 8 protruding from the protective layer shell 1 is higher than the height of the heat-conducting metal thin layer 6 protruding from the protective layer shell 1. When the adhesive layer 8 is actually attached to the object to be adhered, the adhesive layer 8 will be compressed. Here, the height of the adhesive layer 8 is controlled to be flush with the height of the heat-conducting metal thin layer 6 protruding from the protective layer shell 1 after compression, so as to ensure that the side of the heat-conducting metal thin layer 6 away from the protective layer shell 1 is in full contact with the side wall of the object to be adhered.

[0036] Reference Figure 1 The protective layer shell 1 is made of transparent material, and temperature warning marks 3 are respectively provided on the protective layer shell 1 corresponding to the temperature sensing material group 2. The transparent protective layer shell 1 makes it easy for people to observe the color change of the temperature sensing material group 2 after heating, and the specific temperature range can be displayed more intuitively and conveniently according to the different colors presented by multiple sections of different temperature sensing materials at a certain temperature.

[0037] Reference Figure 3 and Figure 4 A plurality of clamping grooves are provided on the inner wall of the placement groove 4, and a plurality of clamping blocks 5 are provided corresponding to the plurality of clamping grooves for the temperature-sensitive material group 2 and the heat-conducting metal thin layer 6. The plurality of clamping blocks 5 are clamped in the clamping grooves, and the temperature-sensitive material group 2 and the heat-conducting metal thin layer 6 are respectively clamped in the clamping grooves through the cooperation of the clamping blocks 5 and the clamping grooves, so as to realize that the temperature-sensitive material group 2 and the heat-conducting metal thin layer 6 are firmly clamped in the protective layer shell 1, and the temperature-sensitive material group 2 and the heat-conducting metal thin layer 6 are prevented from shifting in the protective layer shell 1, and the temperature-sensitive material group 2 and the heat-conducting metal thin layer 6 are prevented from shifting.

[0038] Reference Figure 2 and Figure 4 The material of the heat-conducting metal thin layer 6 is a pure copper sheet. While one side of the heat-conducting metal thin layer 6 is directly in contact with the temperature-sensitive material group 2 and the other side is in contact with the object to be adhered, it can also achieve full adhesion to objects to be adhered of different shapes.

[0039] The implementation principle of a reversible multi-stage color-changing sticker in this embodiment is:

[0040] The first release paper 10 and the second release paper are taken off from the adhesive layer 8 and the sealing rubber pad 9 respectively, and attached to the object to be adhered through the adhesive layer 8, wherein an annular cavity gap is left between the adhesive layer 8 and the sealing rubber pad 9, and when the sealing rubber pad 9 and the adhesive layer 8 are both in close contact with the side wall of the object to be adhered, the gas in the annular cavity gap is squeezed out, and the annular cavity gap forms a sealed cavity. At this time, the external air pressure is greater than the air pressure of the sealed cavity, so that the color-changing sticker is further firmly attached to the object to be adhered;

[0041] The arrangement order of the temperature-sensitive material group 2 is from the most sensitive to the temperature to the least sensitive to the temperature. The specific range can be adjusted according to the actual use of different temperature-sensitive materials. Taking 55 degrees Celsius as an example, the temperature-sensitive materials with the temperature warning mark 3 below 55 degrees Celsius will change color, and the temperature-sensitive materials with the temperature warning mark 3 above 55 degrees Celsius will not change color. On the contrary, the specific temperature range is displayed according to the different color states of different temperature-sensitive materials at the same temperature;

[0042] The height of the adhesive layer 8 protruding from the protective layer shell 1 is higher than the height of the heat-conducting metal thin layer 6 protruding from the protective layer shell 1. In fact, when the adhesive layer 8 is adhered to the object to be adhered, the adhesive layer 8 will be compressed. Here, the height of the adhesive layer 8 is controlled to be flush with the height of the heat-conducting metal thin layer 6 protruding from the protective layer shell 1 after compression, thereby ensuring that the side of the heat-conducting metal thin layer 6 away from the protective layer shell 1 is in full contact with the side wall of the object to be adhered, thereby achieving a better thermal conductivity effect.

[0043] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A reversible multi-stage color-changing sticker, characterized in that: The invention comprises a protective layer shell (1) and a temperature-sensitive material group (2); the protective layer shell (1) is provided with a placement groove (4); the temperature-sensitive material group (2) is placed on the bottom of the placement groove (4) in sequence according to different degrees of sensitivity to temperature; the bottom of the placement groove (4) is provided with a heat-conducting metal thin layer (6); the protective layer shell (1) is provided with an annular adhesive groove (7); an adhesive layer (8) is provided in the adhesive groove (7); the placement groove (4) is located on the inner side of the adhesive groove (7); a first release paper (10) is provided on the side of the adhesive layer (8) away from the protective layer shell (1); a sealing rubber pad (9) is provided on the protective layer shell (1); and the adhesive groove (7) is located on the inner side of the sealing rubber pad (9).

2. The reversible multi-stage color-changing sticker according to claim 1, characterized in that: One side of the heat-conducting metal thin layer (6) is in direct contact with the temperature-sensitive material group (2), and the other side is in contact with the object to be adhered; the height of the adhesive layer (8) protruding from the protective layer shell (1) is higher than the height of the heat-conducting metal thin layer (6) protruding from the protective layer shell (1); and the height of the sealing rubber pad (9) protruding from the protective layer shell (1) is higher than the height of the adhesive layer (8) protruding from the protective layer shell (1).

3. The reversible multi-stage color-changing sticker according to claim 1, characterized in that: The protective layer shell (1) is made of transparent material.

4. A reversible multi-stage color-changing sticker according to any one of claims 1 to 3, characterized in that: A plurality of clamping grooves are provided on the inner wall of the placement groove (4), and a plurality of clamping blocks (5) are provided corresponding to the plurality of clamping grooves for the temperature-sensitive material group (2) and the heat-conducting metal thin layer (6), and the plurality of clamping blocks (5) are clamped in the clamping grooves.

5. The reversible multi-stage color-changing sticker according to claim 1, characterized in that: The protective layer shell (1) is provided with temperature warning marks (3) corresponding to the temperature-sensitive material groups (2).

6. The reversible multi-stage color-changing sticker according to claim 1, characterized in that: The material of the heat-conducting metal thin layer (6) is a pure copper thin sheet.

7. The reversible multi-stage color-changing sticker according to claim 1, characterized in that: A second release paper is provided on the side of the sealing rubber pad (9) away from the protective layer shell (1).

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