High-temperature-resistant and weather-resistant aluminum foil label and preparation method thereof

Abstract

The application relates to the technical field of labels, and discloses an aluminum foil label with good high-temperature resistance and weather resistance and a preparation method thereof. The aluminum foil label comprises a bottom paper layer, a back adhesive layer, an aluminum foil layer and a composite coating which are sequentially connected. The composite coating comprises ethyl acetate, chopped glass fibers, emulsified asphalt, polytetrafluoroethylene, titanium dioxide, an antioxidant and a high-temperature stabilizer. The preparation method comprises the following steps: S1, mixing composite coating raw materials to prepare a composite liquid; S2, performing decontamination treatment on the surface of the aluminum foil, coating the composite liquid, drying and forming a composite coating to prepare a composite material; S3, coating glue on the lower surface of the composite material to form a back adhesive layer, and pasting a bottom paper layer on the lower surface of the back adhesive layer; and S4, cutting to prepare the aluminum foil label. The aluminum foil label and the preparation method can effectively enhance the high-temperature resistance and weather resistance of the aluminum foil label.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of labels, in particular to an aluminum foil label with high temperature resistance and weather resistance and a preparation method thereof. BACKGROUND

[0002] The aluminum foil label is a label made of aluminum foil material, which is made of aluminum foil material as a base material and processed through printing, film coating, die cutting and other processes, and can be used as product identification, traceability code, anti-fake identification, information label and the like. The aluminum foil label has good sealing performance, can effectively prevent the invasion of oxygen, moisture and light, and thus protects the information on the label. It also has excellent corrosion resistance, anti-fake property, lightness and recyclability. Therefore, the aluminum foil label has a wide application in the food, beverage, medicine, cosmetics, electronics and other industries.

[0003] The existing aluminum foil label has a temperature resistance range of-40 DEG C to 150 DEG C. However, in the steel, metallurgy, ceramics, chemical industry, aerospace and other industries, the label often needs to be used in a high-temperature environment. When the temperature exceeds the temperature resistance range of the aluminum foil label, the aluminum foil label will deform, melt or lose adhesion, so that it is difficult to maintain the integrity and readability of the label.

[0004] When the label is used for a long time outdoors or exposed to harsh weather conditions, such as in the fields of automobiles, aerospace, ships and the like, the aluminum foil label is long-term exposed to sunlight, rain, wind and oxygen and other natural environmental factors, which may cause oxidation, discoloration, yellowing or brittleness, affecting the reliability and readability of the label.

[0005] Therefore, it is urgent to develop an aluminum foil label with high temperature resistance and good weather resistance. SUMMARY

[0006] In order to solve at least one of the above technical problems, an aluminum foil label with high temperature resistance and good weather resistance is developed, and the application provides an aluminum foil label with high temperature resistance and good weather resistance and a preparation method thereof.

[0007] In one aspect, the application provides an aluminum foil label with high temperature resistance and good weather resistance, which comprises a bottom paper layer, an adhesive layer, an aluminum foil layer and a composite coating layer connected in sequence.

[0008] The composite coating layer comprises, by weight fraction, 40-60 parts of ethyl acetate, 30-40 parts of chopped glass fiber, 10-20 parts of emulsified asphalt, 0.1-3 parts of polytetrafluoroethylene, 0.1-2 parts of titanium dioxide, 0.1-2 parts of antioxidant and 0.1-2 parts of high-temperature stabilizer.

[0009] By adopting the above technical solution, the aluminum foil label prepared by adopting specific components and proportions has greatly improved temperature resistance and weather resistance.

[0010] The present application adds short glass fibers, which have good high temperature resistance. Adding short glass fibers to the coating can improve the temperature resistance of the aluminum foil label, so that it remains stable in high temperature environments. Short glass fibers also have excellent barrier properties, effectively blocking the penetration of oxygen, water vapor and other external substances. Adding short glass fibers to the coating can improve the barrier properties of the aluminum foil label, increase its barrier effect to moisture, gas and light, and enhance its weather resistance.

[0011] The present application adds emulsified asphalt, which has good high temperature resistance and weather resistance. Adding emulsified asphalt to the composite coating can provide a protective layer, preventing high temperature, ultraviolet light, chemicals and other external factors from eroding the aluminum foil label, thereby extending the service life of the aluminum foil label in high temperature and harsh weather conditions.

[0012] The present application adds polytetrafluoroethylene, which has excellent high temperature resistance and can resist thermal expansion and oxidative decomposition in high temperature environments. This improves the high temperature resistance of the aluminum foil label, allowing it to remain stable in high temperature environments. Polytetrafluoroethylene also has a low coefficient of friction and good lubricity, making the coating surface smoother and reducing frictional resistance with other materials or surfaces. This improves the sliding and anti-sticking properties of the aluminum foil label, extending its service life.

[0013] The present application adds titanium dioxide, which has good ultraviolet light absorption properties and can absorb and convert ultraviolet light energy into heat energy, which is then dissipated. Adding titanium dioxide can absorb and scatter ultraviolet light, reducing direct ultraviolet light exposure to the coating, thereby improving the weather resistance of the aluminum foil label, slowing down the aging and discoloration process, and effectively protecting the label.

[0014] Optionally, the length of the short glass fibers is 0.1-1.5 mm.

[0015] By using the above technical solution, when the length of the short glass fibers is 0.1-1.5 mm, the barrier properties of the composite coating are better, the compactness of the coating is increased, the barrier effect to gas, moisture and light is improved, and the weather resistance is enhanced, thereby extending the service life of the aluminum foil label.

[0016] Optionally, the mass ratio of the short glass fibers to the emulsified asphalt is (2-3):1.

[0017] By using the above technical solution, the combined use of short glass fibers and emulsified asphalt can improve the barrier properties of the coating, improve the barrier effect of the label to gas, moisture and light. It can also improve the stability of the coating, reduce shrinkage and deformation of the coating, so that the aluminum foil label can maintain a stable form in various environmental conditions, improving weather resistance. When the mass ratio of short glass fibers to emulsified asphalt is (2-3):1, the effect is better.

[0018] Optionally, the antioxidant is selected from at least one of polysiloxane, nano-silica, antioxidant BHT.

[0019] Optionally, the high-temperature stabilizer is selected from at least one of alumina, sulfonated phenolic resin, cyclomethicone.

[0020] In a second aspect, the application provides a preparation method of the above-mentioned aluminum foil label with good high-temperature resistance and weather resistance, comprising the following steps:

[0021] S1, the cut glass fiber, the emulsified asphalt, the polytetrafluoroethylene, the titanium dioxide, the antioxidant and the high-temperature stabilizer are added into the ethyl acetate, mixed, and a composite liquid is prepared;

[0022] S2, the aluminum foil surface is decontaminated, the composite liquid is coated, dried, a composite coating is formed, and a composite material is prepared;

[0023] S3, glue is coated on the lower surface of the composite material to form a back adhesive layer, and a base paper layer is pasted on the lower surface of the back adhesive layer;

[0024] S4, cutting is performed to prepare an aluminum foil label.

[0025] By adopting the above technical solution, the preparation method adopted by the application is simple and convenient, and the preparation process does not require a high-temperature energy consumption process, thereby saving energy and reducing emissions and being friendly to the environment.

[0026] Optionally, in the step S1, the mixing temperature is 20-40℃, and the mixing time is 0.5-2h.

[0027] By adopting the above technical solution, the application controls the mixing temperature to be 20-40℃, thereby improving the flowability of the coating and making it easier to coat on the aluminum foil surface.

[0028] The application controls the mixing time, and too short mixing time will cause the raw materials to be not fully dispersed and mixed, and too long mixing time will cause the components to volatilize and deteriorate, thereby affecting the performance of the coating. When the mixing time is 0.5-2h, it is beneficial to form a uniform composite coating, improve the stability of the composite coating, and achieve a good composite coating effect.

[0029] Optionally, in the step S2, the decontamination treatment is that the aluminum foil is soaked in a cleaning liquid for 5-10min, pickled for 3-5min, alkali washed for 3-5min, rinsed with clean water for 5-10min, and dried.

[0030] Through the above technical scheme, in the decontamination treatment, the cleaning liquid can remove the dust, dirt and grease and other impurities on the surface of the aluminum foil, ensuring that the surface is clean; the pickling can remove the oxides and oxide layers on the surface of the aluminum foil, improve the activity of the surface, and enhance the adhesion of the coating and pasting process; the alkali washing can neutralize the residual acidic substances on the surface, and at the same time remove the basic substances on the surface of the aluminum foil, so that the surface is in a neutral state, reducing the influence on the subsequent process; the water flushing ensures that the basic residues are completely removed.

[0031] Optionally, in the step S2, the drying temperature is 60-100 DEG C.

[0032] Through the above technical scheme, if the drying temperature is too low, the drying time will be prolonged, affecting the production efficiency; if the drying temperature is too high, the coating may be decomposed, foamed or deformed, etc., reducing the quality of the coating. The drying temperature of the present application is 60-100 DEG C, so that the components in the coating form a uniform film structure, thereby improving the adhesion and durability of the coating.

[0033] Optionally, in the step S3, the back adhesive layer is a pressure-sensitive adhesive, and the base paper layer is a release paper or a release film.

[0034] In summary, the present application has at least one of the following beneficial technical effects:

[0035] 1. The aluminum foil label prepared by the present application has a specific composition and ratio of the composite coating, and has strong high temperature resistance and weather resistance.

[0036] 2. The short-cut glass fiber added to the coating in the present application can improve the temperature resistance of the aluminum foil label, so that it remains stable in a high temperature environment. It can also effectively block the penetration of oxygen, water vapor and other external substances, improve the barrier performance of the aluminum foil label, increase its barrier effect to moisture, gas and light, and thus enhance its weather resistance.

[0037] 3. The emulsified asphalt added in the present application has good high temperature resistance and weather resistance, and when added to the composite coating, it can provide a protective layer to avoid the erosion of high temperature, ultraviolet rays, chemical substances and other external factors on the aluminum foil label, thereby prolonging the service life of the aluminum foil label in high temperature and harsh weather conditions.

[0038] 4. The preparation method adopted by the present application is simple and convenient to operate, and does not require high temperature energy consumption process in the preparation process, which is energy-saving, emission-reducing and environment-friendly. DETAILED DESCRIPTION

[0039] The present application will be further described in detail below in combination with examples.

[0040] The present application designs an aluminum foil label with good high temperature resistance and weather resistance, which comprises a base paper layer, a back adhesive layer, an aluminum foil layer and a composite coating connected in sequence.

[0041] The composite coating comprises, by weight parts: 40-60 parts of ethyl acetate, 30-40 parts of chopped glass fiber, 10-20 parts of emulsified asphalt, 0.1-3 parts of polytetrafluoroethylene, 0.1-2 parts of titanium dioxide, 0.1-2 parts of antioxidant, and 0.1-2 parts of high-temperature stabilizer.

[0042] The high-temperature-resistant and weather-resistant aluminum foil label of the present application is prepared by the following method, comprising the following steps:

[0043] S1, the chopped glass fiber, the emulsified asphalt, the polytetrafluoroethylene, the titanium dioxide, the antioxidant and the high-temperature stabilizer are added into the ethyl acetate, mixed, and a composite liquid is prepared;

[0044] S2, the aluminum foil surface is decontaminated, the composite liquid is coated, dried, and a composite coating is formed to prepare a composite material;

[0045] S3, glue is applied to the lower surface of the composite material to form a back adhesive layer, and a backing paper layer is pasted to the lower surface of the back adhesive layer;

[0046] S4, cutting, to prepare an aluminum foil label.

[0047] Prior to the present application, the existing aluminum foil label has a temperature resistance range of -40℃ to 150℃, which cannot meet the use conditions of high-temperature industries such as steel, metallurgy, ceramics, chemical industry, aerospace, etc. When the temperature exceeds the temperature resistance range of the aluminum foil label, the aluminum foil label will deform, melt or lose adhesion, thereby making it difficult to maintain the integrity and readability of the label. In the fields of automobiles, aerospace, ships, etc., the aluminum foil label is exposed to sunlight, rain, wind and oxygen for a long time, which will also cause oxidation, discoloration, yellowing or brittleness, affecting the reliability and readability of the label.

[0048] The present applicant designs the technical scheme of the present application in view of the existing problems of the aluminum foil label.

[0049] Firstly, the aluminum foil label of the present application is proposed, and chopped glass fiber and emulsified asphalt are added in the composite coating, which effectively improves the high-temperature resistance and weather resistance of the aluminum foil label.

[0050] Secondly, the preparation method of the aluminum foil label adopted by the present application is simple and convenient to operate, and does not require high-temperature energy consumption process in the preparation process, which is energy-saving, emission-reducing and environment-friendly.

[0051] The raw materials used in the present application are all from commercially available products, and the specific manufacturers are as follows:

[0052] Ethyl acetate: Jinan Mingwei Chemical Co., Ltd., purity: 99%.

[0053] Chopped strand glass fiber: Hubei Chengfeng Chemical Co., Ltd., purity: 99%.

[0054] Emulsified asphalt: Shandong Jiaying Chemical Technology Co., Ltd., purity: 99.9%.

[0055] Polytetrafluoroethylene: Shanghai Yuan Ye Biological Technology Co., Ltd., item number: S24392.

[0056] Titanium dioxide: Guangdong Wengjiang Chemical Reagent Co., Ltd., item number: PA04392.

[0057] Polysiloxane: Shanghai Yuan Ye Biological Technology Co., Ltd., item number: S49332.

[0058] Nano-silicon dioxide: Zhejiang Ametek Nanometer Technology Co., Ltd., purity: 99.99%.

[0059] Antioxidant BHT: Junye Runjia Chemical Co., Ltd., purity: 99%.

[0060] Sulfonated phenolic resin: Shandong Haizhou Biological Engineering Co., Ltd., purity: 99%.

[0061] Cyclo-methyl silicone: Beijing Xingyi Yachuang Biological Technology Co., Ltd., item number: 190143.

[0062] Examples 1-4

[0063] Example 1

[0064] The example provides an aluminum foil label with good high-temperature resistance and weather resistance, comprising a bottom paper layer, an adhesive backing layer, an aluminum foil layer and a composite coating layer connected in sequence;

[0065] S1, 40 kg of chopped strand glass fiber, 18 kg of emulsified asphalt, 2 kg of polytetrafluoroethylene, 2 kg of titanium dioxide, 1.5 kg of polysiloxane and 2 kg of aluminum oxide are added into 60 kg of ethyl acetate, mixed at 40°C for 2h, to prepare a composite liquid, wherein the length of the chopped strand glass fiber is 0.1 mm;

[0066] S2, the aluminum foil surface is decontaminated, the composite liquid is coated, and the composite coating layer is formed by drying at 80°C, to prepare a composite material;

[0067] S3, the adhesive backing layer is formed by coating glue on the lower surface of the composite material, and the bottom paper layer is pasted on the lower surface of the adhesive backing layer;

[0068] S4, cutting, to prepare an aluminum foil label.

[0069] In step S2, the decontamination treatment is: soaking the aluminum foil in the cleaning liquid for 10 min, acid washing with dilute sulfuric acid for 5 min, alkali washing with sodium hydroxide for 4 min, rinsing with clean water for 10 min, and drying.

[0070] Embodiment 2

[0071] The embodiment provides an aluminum foil label with good high-temperature resistance and weather resistance, which comprises a base paper layer, a back adhesive layer, an aluminum foil layer and a composite coating layer connected in sequence.

[0072] S1, 35 kg of chopped glass fiber, 15 kg of emulsified asphalt, 0.1 kg of polytetrafluoroethylene, 1 kg of titanium dioxide, 2 kg of nano silicon dioxide and 0.1 kg of sulfonated phenolic resin are added into 40 kg of ethyl acetate, and mixed at 30 DEG C for 0.5 h to prepare a composite liquid, wherein the length of the chopped glass fiber is 0.5 mm;

[0073] S2, the aluminum foil surface is subjected to decontamination treatment, the composite liquid is coated, and the composite coating layer is formed by drying at 60 DEG C to prepare a composite material;

[0074] S3, the back adhesive layer is formed by coating glue on the lower surface of the composite material, and the base paper layer is pasted on the lower surface of the back adhesive layer;

[0075] S4, cutting, to prepare an aluminum foil label.

[0076] In step S2, the decontamination treatment is that the aluminum foil is soaked in the cleaning liquid for 8 min, is subjected to acid pickling with dilute sulfuric acid for 4 min, is subjected to alkali washing with sodium hydroxide for 3 min, is washed with clean water for 7 min, and is dried.

[0077] Embodiment 3

[0078] The embodiment provides an aluminum foil label with good high-temperature resistance and weather resistance, which comprises a base paper layer, a back adhesive layer, an aluminum foil layer and a composite coating layer connected in sequence.

[0079] S1, 32 kg of chopped glass fiber, 10 kg of emulsified asphalt, 3 kg of polytetrafluoroethylene, 1.5 kg of titanium dioxide, 0.1 kg of antioxidant BHT and 1.5 kg of cyclomethicone are added into 50 kg of ethyl acetate, and mixed at 20 DEG C for 1 h to prepare a composite liquid, wherein the length of the chopped glass fiber is 1 mm;

[0080] S2, the aluminum foil surface is subjected to decontamination treatment, the composite liquid is coated, and the composite coating layer is formed by drying at 100 DEG C to prepare a composite material;

[0081] S3, the back adhesive layer is formed by coating glue on the lower surface of the composite material, and the base paper layer is pasted on the lower surface of the back adhesive layer;

[0082] S4, cutting, to prepare an aluminum foil label.

[0083] In step S2, the decontamination treatment is that the aluminum foil is soaked in the cleaning liquid for 6 min, is subjected to acid pickling with dilute sulfuric acid for 3 min, is subjected to alkali washing with sodium hydroxide for 5 min, is washed with clean water for 5 min, and is dried.

[0084] Example 4

[0085] The embodiment provides an aluminum foil label with good high-temperature resistance and weather resistance, comprising a base paper layer, an adhesive backing layer, an aluminum foil layer and a composite coating layer connected in sequence.

[0086] S1, 30 kg of chopped glass fiber, 20 kg of emulsified asphalt, 1 kg of polytetrafluoroethylene, 0.1 kg of titanium dioxide, 1 kg of polysiloxane and 1 kg of aluminum oxide are added into 55 kg of ethyl acetate, and mixed at 35°C for 1.5 h to prepare a composite liquid, wherein the length of the chopped glass fiber is 1.5 mm;

[0087] S2, the aluminum foil surface is subjected to decontamination treatment, the composite liquid is coated, and the composite coating layer is formed by drying at 70°C to prepare a composite material;

[0088] S3, the adhesive backing layer is formed by coating glue on the lower surface of the composite material, and the base paper layer is pasted on the lower surface of the adhesive backing layer;

[0089] S4, cutting, to prepare an aluminum foil label.

[0090] In step S2, the decontamination treatment is: soaking the aluminum foil in the cleaning liquid for 5 min, acid washing with dilute sulfuric acid for 4.5 min, alkali washing with sodium hydroxide for 4.5 min, rinsing with clean water for 9 min, and drying.

[0091] The content of each component in examples 1-4 is shown in Table 1.

[0092] Table 1

[0093]

[0094]

[0095] The parameters in examples 1-4 are shown in Table 2.

[0096] Table 2

[0097]

[0098] Comparative examples 1-5

[0099] Comparative example 1

[0100] The difference between comparative example 1 and example 1 is that the step S1 of comparative example 1 does not contain chopped glass fiber and emulsified asphalt.

[0101] Comparative example 2

[0102] The difference between comparative example 2 and example 1 is that the step S1 of comparative example 2 does not contain chopped glass fiber.

[0103] Comparative Example 3

[0104] Comparative Example 3 differs from Example 1 in that Comparative Example 3 does not contain emulsified asphalt in Step S1.

[0105] Comparative Example 4

[0106] Comparative Example 4 differs from Example 1 in that Comparative Example 4 replaces 40 kg of short-cut glass fiber with 40 kg of emulsified asphalt in Step S1.

[0107] Comparative Example 5

[0108] Comparative Example 5 differs from Example 1 in that Comparative Example 5 replaces 18 kg of emulsified asphalt with 18 kg of short-cut glass fiber in Step S1.

[0109] Comparative Example 6

[0110] Comparative Example 6 differs from Example 1 in that Comparative Example 6 replaces 40 kg of short-cut glass fiber with 40 kg of short-cut carbon fiber in Step S1.

[0111] Experimental Test

[0112] Test Items and Test Methods:

[0113] High-temperature resistance test: place the aluminum foil label in a 400°C environment for 100 h, and observe the morphological changes.

[0114] Weather resistance test:

[0115] Place the aluminum foil label in 200°C water vapor for 100 h;

[0116] Soak the aluminum foil label in water at room temperature for 100 h;

[0117] Expose the aluminum foil label to light at room temperature for 100 h;

[0118] Soak the aluminum foil label in a 5% NaCl solution at room temperature for 100 h;

[0119] Soak the aluminum foil label in a 5% HCl solution at room temperature for 100 h;

[0120] Soak the aluminum foil label in a 10% NaOH solution at room temperature for 100 h

[0121] The aluminum foil labels prepared in Examples 1-4 and Comparative Examples 1-6 were subjected to high-temperature resistance tests and weather resistance tests, and the test results are shown in Table 3.

[0122] Table 3

[0123]

[0124]

[0125]

[0126] From the detection results of Table 3, it can be seen that the aluminum foil labels prepared in Examples 1-4 do not fall off, do not have edge lifting, do not deform, do not bubble, and can be applied in an environment of 400℃, having good high temperature resistance and weather resistance. The aluminum foil labels prepared in Comparative Examples 1-5 have falling off, edge lifting, deformation, and bubbling, and have much lower high temperature resistance and weather resistance than Examples 1-4.

[0127] Comparative Example 1 does not contain short-cut glass fibers and emulsified asphalt, and the aluminum foil label has falling off, edge lifting, deformation, and bubbling, and has poor high temperature resistance and weather resistance; Comparative Example 2 does not contain short-cut glass fibers, and Comparative Example 3 does not contain emulsified asphalt, and the aluminum foil labels have poor high temperature resistance and weather resistance; the aluminum foil labels prepared in Comparative Example 4 and Comparative Example 5 also have poor high temperature resistance and weather resistance. Therefore, it can be seen that the short-cut glass fibers and emulsified asphalt play a synergistic role in the aluminum foil label, and when added at the same time, the high temperature resistance and weather resistance of the aluminum foil label can be effectively improved.

[0128] Comparative Example 6 replaces the short-cut glass fibers with short-cut carbon fibers, and the aluminum foil label prepared has falling off, edge lifting, and deformation, and has weaker high temperature resistance and weather resistance than Example 1.

[0129] Examples 5-7

[0130] Example 5

[0131] Example 5 differs from Example 1 in that in step S2 of Example 5, the drying temperature is 60℃.

[0132] Example 6

[0133] Example 6 differs from Example 1 in that in step S2 of Example 6, the drying temperature is 70℃.

[0134] Example 7

[0135] Example 7 differs from Example 1 in that in step S2 of Example 7, the drying temperature is 100℃.

[0136] Comparative Example 7

[0137] Comparative Example 7 differs from Example 1 in that in step S2 of Comparative Example 7, the drying temperature is 120℃.

[0138] The aluminum foil labels prepared in Examples 5-7 and Comparative Example 7 are subjected to high temperature resistance detection and weather resistance detection, and the detection results are shown in Table 4.

[0139] Table 4

[0140]

[0141]

[0142] From the detection results of Table 4, it can be seen that the aluminum foil labels prepared in Examples 5-7 do not fall off, do not have edge lifting, do not deform, do not bubble, and have good high temperature resistance and weather resistance. In step S2 of Comparative Example 7, the drying temperature is 120°C, and the aluminum foil label prepared has falling off, edge lifting, deformation, and bubbling, and the high temperature resistance and weather resistance are not as good as those of Examples 5-7.

[0143] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high-temperature-resistant and weather-resistant aluminum foil label, characterized by comprising: The composite coating layer comprises, in parts by weight, 40-60 parts of ethyl acetate, 30-40 parts of chopped glass fiber, 10-20 parts of emulsified asphalt, 0.1-3 parts of polytetrafluoroethylene, 0.1-2 parts of titanium dioxide, 0.1-2 parts of antioxidant, and 0.1-2 parts of high-temperature stabilizer. The preparation method of the aluminum foil label with good high-temperature resistance and weather resistance comprises the following steps: S1, the chopped glass fiber, the emulsified asphalt, the polytetrafluoroethylene, the titanium dioxide, the antioxidant and the high-temperature stabilizer are added into the ethyl acetate, mixed, and a composite liquid is prepared; S2, the aluminum foil surface is decontaminated, the composite liquid is coated, dried, a composite coating layer is formed, and a composite material is prepared; S3, the back adhesive layer is formed by gluing the lower surface of the composite material, and the bottom paper layer is pasted on the lower surface of the back adhesive layer; S4, cutting, and an aluminum foil label is prepared; In the step S2, the drying temperature is 60-100 DEG C. The length of the chopped glass fiber is 0.1-1.5 mm.

2. The high-temperature-resistant and weather-resistant aluminum foil label according to claim 1, characterized in that, The mass ratio of the chopped glass fiber to the emulsified asphalt is (2-3):

1.

3. The high-temperature-resistant and weather-resistant aluminum foil label according to claim 1, characterized in that, The antioxidant is selected from at least one of polysiloxane, nano-silicon dioxide and antioxidant BHT.

4. The high-temperature-resistant and weather-resistant aluminum foil label according to claim 1, characterized in that, The high-temperature stabilizer is selected from at least one of aluminum oxide, sulfonated phenolic resin and cyclo-methyl silicone.

5. The high-temperature-resistant and weather-resistant aluminum foil label according to claim 1, characterized in that, In the step S1, the mixing temperature is 20-40 DEG C, and the mixing time is 0.5-2 h.

6. The high-temperature-resistant and weather-resistant aluminum foil label according to claim 1, characterized in that, In the step S2, the decontamination treatment is that the aluminum foil is soaked in a cleaning liquid for 5-10 min, pickled for 3-5 min, alkali washed for 3-5 min, rinsed with clean water for 5-10 min, and dried.

7. The high-temperature-resistant and weather-resistant aluminum foil label according to claim 1, characterized in that, In the step S3, the back adhesive layer is pressure-sensitive adhesive, and the bottom paper layer is release paper or release film.

8. The high-temperature-resistant and weather-resistant aluminum foil label according to claim 1, characterized in that, ​

Images