Alcoholysis adhesive, adhesive tape and preparation method thereof
By preparing an alcohol-based adhesive degreasing agent composed of styrene-butadiene-styrene block copolymer and SEBS thermoplastic elastomer, the problems of easy residue and easy breakage of existing alcohol-based adhesive degreasing tapes are solved, achieving an environmentally friendly, low-toxicity, and highly efficient degreasing effect, suitable for heavy-duty electronic products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-19
- Publication Date
- 2026-03-27
AI Technical Summary
Existing alcohol-based adhesive tapes tend to leave residues and break easily after dissolution, affecting rework efficiency. Furthermore, traditional solvents such as acetone are toxic and fail to meet environmental protection requirements.
An alcohol-based adhesive, composed of styrene-butadiene-styrene block copolymer, SEBS thermoplastic elastomer, terpene resin, and liquid rosin resin, is prepared by a specific solvent mixing and stirring process and then coated onto a release film to form an adhesive tape.
It achieves zero residue after tape removal, has excellent alcohol-based tack reduction effect, is environmentally friendly and low in toxicity, and is suitable for non-damaging peeling during heavy-duty processing of electronic products, reducing the difficulty of heavy-duty processing.
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Abstract
Description
Technical Field
[0001] This invention relates to the field of adhesive materials, and in particular to an alcohol-based adhesive, tape, and a method for preparing the same. Background Technology
[0002] Existing battery adhesives for electronic products are prone to deformation and damage to the battery and casing due to their strong adhesion during rework or after-sales repair. Furthermore, pull-out adhesives are prone to breakage, increasing the difficulty of rework. Alcohol, being volatile, low in toxicity, and non-corrosive, generally does not damage electronic products. A drop-alcohol battery adhesive preparation method allows for easy separation of the battery and casing after the alcohol is added. This achieves a strong bond between the battery and casing during use and allows for easy separation during rework or repair, reducing the difficulty of rework and improving the adhesive's performance and market applicability.
[0003] CN216337386U discloses an easy-pull adhesive tape that can be de-adhesive with dripped alcohol. It consists of a base film made of SBS, SIS, or a mixture of both, and adhesive layers on the upper and lower surfaces. Alcohol can penetrate through the perforated pores or rough surface of the base film, causing the tape to delaminate or lose adhesion to the object. However, after delamination, residual tape remains (still adhering to the object after delamination), making removal difficult and causing the tape to break easily after loss of adhesion. This is because existing adhesive-based tapes suffer from problems such as residue after alcohol de-adhesion and poor de-adhesion performance, affecting rework efficiency.
[0004] Therefore, developing a tape that is not prone to residue, has good de-adhesion effect, and can be used for alcohol de-adhesion has broad market prospects in the field of precision electronics and is an urgent problem to be solved in this field. Summary of the Invention
[0005] The technical problem to be solved by the present invention is to provide an alcohol-based adhesive, tape and its preparation method, in order to address the shortcomings of the prior art.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: In its first aspect, the present invention provides an alcohol-based adhesive for degreasing, comprising the following raw material components in parts by weight: 30-95 parts of styrene-butadiene-styrene block copolymer, 10-40 parts of SEBS thermoplastic elastomer, 90-100 parts of solvent, 60-130 parts of terpene resin, 10-40 parts of liquid rosin resin, and 3-5 parts of antioxidant.
[0007] Preferably, the styrene-butadiene-styrene block copolymer is SBS D1184AT.
[0008] Preferably, the SEBS thermoplastic elastomer is SEBS FG1901.
[0009] Preferably, the terpene resin includes 30-80 parts by weight of terpene resin TA125 and 30-50 parts by weight of terpene resin TA115.
[0010] Preferably, the rosin methyl ester is rosin methyl ester AS-1020.
[0011] Preferably, the solvent is toluene, and the liquid rosin resin is liquid rosin resin GA-AT.
[0012] Preferably, the alcohol-based adhesive comprises the following raw material components in parts by weight: 30-95 parts SBS D1184AT, 60-190 parts SEBS thermoplastic elastomer, 90-100 parts toluene, 30-80 parts pinene terpene resin TA125, 20-50 parts terpene resin TA115, 10-40 parts liquid rosin resin GA-AT, and 3-5 parts antioxidant 1010.
[0013] A second aspect of the present invention provides a method for preparing the alcohol-based adhesive as described above, comprising the following steps: S1. Add styrene-butadiene-styrene block copolymer and SEBS thermoplastic elastomer to the solvent in the first part, and stir until completely dissolved to obtain a rubber solution; S2. Add the terpene resin and liquid rosin resin to the second solvent and stir to obtain a resin solution; S3. Add the antioxidant to the remaining second part of the solvent, stir, and obtain the antioxidant solution; S4. Add the resin solution to the rubber solution, stir, then add the antioxidant solution, stir, and let stand to degas, to obtain the alcohol-based adhesive.
[0014] Preferably, the preparation method of the alcohol-based adhesive includes the following steps: S1. Add styrene-butadiene-styrene block copolymer and SEBS thermoplastic elastomer to the solvent in the first part, and stir for 1-4 hours to obtain a rubber solution; S2. Add the terpene resin and liquid rosin resin to the second solvent and stir for 1.5-6 hours to obtain a resin solution; S3. Add the antioxidant to the remaining second part of the solvent and stir for 15-60 minutes to obtain the antioxidant solution. S4. Add the resin solution to the rubber solution and stir at room temperature for 1.5-6 hours. Then add the antioxidant solution and stir at room temperature for 1-4 hours. Let it stand to remove bubbles to obtain the alcohol-based adhesive.
[0015] A third aspect of the present invention provides an alcohol-based adhesive tape, which is prepared by the following method: The alcohol-based adhesive is uniformly coated onto the heavy release film as described above, dried, and then a light release film is attached to the adhesive surface to obtain the alcohol-based adhesive tape.
[0016] The beneficial effects of this invention are: This invention provides an alcohol-based adhesive degreasing agent, tape, and its preparation method, which has the advantages of being easy to remove residues and having a good degreasing effect, and has broad application prospects. The alcohol-based anti-tack tape of this invention solves the problem of traditional tapes being "strongly adhesive but difficult to tear" through material innovation. Compared with organic solvents (such as acetone), alcohol is less toxic, easily biodegradable, and more environmentally friendly.
[0017] The alcohol-based adhesive tape developed in this invention achieves high adhesion, excellent alcohol-based adhesive reduction, and residue-free removal, allowing for the non-damaging peeling of screen modules and batteries during repairs. Detailed Implementation
[0018] The present invention will be further described in detail below with reference to embodiments, so that those skilled in the art can implement it based on the description.
[0019] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.
[0020] Unless otherwise specified, the experimental methods used in the following examples are conventional methods. Unless otherwise specified, the materials and reagents used in the following examples are commercially available. For examples where specific conditions are not specified, conventional conditions or conditions recommended by the manufacturer are followed. For reagents or instruments whose manufacturers are not specified, they are all commercially available products.
[0021] This invention provides an alcohol-based adhesive for degreasing, comprising the following raw material components in parts by weight: 30-95 parts of styrene-butadiene-styrene block copolymer, 10-40 parts of SEBS thermoplastic elastomer, 90-100 parts of solvent, 60-130 parts of terpene resin, 10-40 parts of liquid rosin resin, and 3-5 parts of antioxidant.
[0022] In a preferred embodiment, the styrene-butadiene-styrene block copolymer (SBS) is SBS D1184AT.
[0023] SEBS is a saturated SBS, or hydrogenated SBS (styrene-butadiene-styrene block copolymer), which is produced by hydrogenating a special linear SBS to saturate the double bonds. In a preferred embodiment, the SEBS thermoplastic elastomer is SEBS FG1901. FG1901 is a transparent linear triblock copolymer based on styrene and ethylene / butene, with polystyrene content of 30% and 13%, respectively. Maleic anhydride (MA) is grafted onto the rubber intermediate blocks of the SEBS polymer. MA grafting improves adhesion to nylon, polyester, ethylene, vinyl alcohol, aluminum, steel, glass, and many other substrates.
[0024] In a preferred embodiment, the terpene resin includes 30-80 parts by weight of terpene resin TA125 (light yellow α-pinene terpene resin) and 30-50 parts by weight of terpene resin TA115. It exhibits good compatibility with SBS and SEBS, and demonstrates superior adhesion.
[0025] In a preferred embodiment, rosin methyl ester is rosin methyl ester AS-1020. AS-1020 is a pale yellow viscous liquid obtained by esterification of rosin and methanol. It features a low glass transition temperature, high boiling point, good thermal stability, and excellent surface wetting properties. It exhibits good compatibility with various solvents and other resins, demonstrating excellent adhesion and bonding effects in adhesives.
[0026] In a preferred embodiment, the solvent is toluene.
[0027] In a preferred embodiment, the liquid rosin resin is liquid rosin resin GA-AT. Liquid rosin resin GA-AT can enhance the alcohol's tack-reducing effect and improve initial tack.
[0028] In a preferred embodiment, the alcohol-based adhesive remover comprises the following raw material components in parts by weight: 30-95 parts SBS D1184AT, 60-190 parts SEBS thermoplastic elastomer, 90-100 parts toluene, 30-80 parts pinene terpene resin TA125, 20-50 parts terpene resin TA115, 10-40 parts liquid rosin resin GA-AT, and 3-5 parts antioxidant 1010.
[0029] Antioxidant 1010 has excellent antioxidant properties and can effectively extend the service life of products.
[0030] The present invention also provides a method for preparing the alcohol-based adhesive as described above, comprising the following steps: S1. Add styrene-butadiene-styrene block copolymer and SEBS thermoplastic elastomer to the solvent in the first part, and stir until completely dissolved to obtain a rubber solution; S2. Add the terpene resin and liquid rosin resin to the second solvent and stir to obtain a resin solution; S3. Add the antioxidant to the remaining second part of the solvent, stir, and obtain the antioxidant solution; S4. Add the resin solution to the rubber solution, stir, then add the antioxidant solution, stir, and let stand to degas, to obtain the alcohol-based adhesive.
[0031] In a preferred embodiment, the method for preparing the alcohol-based adhesive includes the following steps: S1. Add styrene-butadiene-styrene block copolymer and SEBS thermoplastic elastomer to the solvent in the first part, and stir for 1-4 hours to obtain a rubber solution; S2. Add the terpene resin and liquid rosin resin to the second solvent and stir for 1.5-6 hours to obtain a resin solution; S3. Add the antioxidant to the remaining second part of the solvent and stir for 15-60 minutes to obtain the antioxidant solution. S4. Add the resin solution to the rubber solution and stir at room temperature for 1.5-6 hours. Then add the antioxidant solution and stir at room temperature for 1-4 hours. Let it stand to remove bubbles to obtain the alcohol-based adhesive.
[0032] The present invention also provides an alcohol-based adhesive tape, which is prepared by the following method: The alcohol-based adhesive is uniformly coated onto the heavy release film as described above, dried, and then a light release film is attached to the adhesive surface to obtain the alcohol-based adhesive tape.
[0033] The above is the general concept of the present invention. Based on this, detailed embodiments and comparative examples are provided below to further illustrate the present invention.
[0034] The main sources of raw materials used in the following examples and comparative examples are described in Table 1 below: Table 1 All figures in the following examples and comparative examples are parts by weight.
[0035] Example 1 An alcohol-based adhesive for removing adhesive residues, the preparation method of which includes the following steps: S1. Weigh 100 parts of rubber FG1901 and mix them with 50 parts of toluene. Stir for 2 hours to completely dissolve and mix the rubber evenly to obtain a rubber solution. S2. Add 50 parts of TA125, 30 parts of TA115, and 20 parts of AS-1020 to 40 parts of toluene and stir for 3 hours to obtain a resin solution. S3. Dissolve 0.5 parts of antioxidant 1010 in 10 parts of toluene and stir at room temperature for half an hour to obtain an antioxidant solution; S4. Add the resin solution to the rubber solution, stir at room temperature for 3 hours, then add the antioxidant solution, stir at room temperature for 2 hours, and let stand for 4 hours to remove bubbles, thus obtaining the alcohol-based adhesive.
[0036] Example 2 An alcohol-based adhesive for removing adhesive residues, the preparation method of which includes the following steps: S1. Weigh 90 parts of rubber FG1901 and 10 parts of rubber D1184AT, mix them, add them to 50 parts of toluene, and stir for 2 hours to completely dissolve and mix the rubber evenly to obtain a rubber solution. S2. Add 50 parts of TA125, 30 parts of TA115, and 20 parts of AS-1020 to 40 parts of toluene and stir for 3 hours to obtain a resin solution. S3. Dissolve 0.5 parts of antioxidant 1010 in 10 parts of toluene and stir at room temperature for half an hour to obtain an antioxidant solution; S4. Add the resin solution to the rubber solution, stir at room temperature for 3 hours, then add the antioxidant solution, stir at room temperature for 2 hours, and let stand for 4 hours to remove bubbles, thus obtaining the alcohol-based adhesive.
[0037] Example 3 An alcohol-based adhesive for removing adhesive residues, the preparation method of which includes the following steps: S1. Weigh 70 parts of rubber FG1901 and 30 parts of rubber D1184AT, mix them, add them to 50 parts of toluene, and stir for 2 hours to completely dissolve and mix the rubber evenly to obtain a rubber solution. S2. Add 50 parts of TA125, 30 parts of TA115, and 20 parts of AS-1020 to 40 parts of toluene and stir for 3 hours to obtain a resin solution. S3. Dissolve 0.5 parts of antioxidant 1010 in 10 parts of toluene and stir at room temperature for half an hour to obtain an antioxidant solution; S4. Add the resin solution to the rubber solution, stir at room temperature for 3 hours, then add the antioxidant solution, stir at room temperature for 2 hours, and let stand for 4 hours to remove bubbles, thus obtaining the alcohol-based adhesive.
[0038] Example 4 An alcohol-based adhesive for removing adhesive residues, the preparation method of which includes the following steps: S1. Weigh 100 parts of rubber FG1924 and mix them with 50 parts of toluene. Stir for 2 hours to completely dissolve and mix the rubber evenly to obtain a rubber solution. S2. Add 50 parts of TA125, 30 parts of TA115, and 20 parts of AS-1020 to 40 parts of toluene and stir for 3 hours to obtain a resin solution. S3. Dissolve 0.5 parts of antioxidant 1010 in 10 parts of toluene and stir at room temperature for half an hour to obtain an antioxidant solution; S4. Add the resin solution to the rubber solution, stir at room temperature for 3 hours, then add the antioxidant solution, stir at room temperature for 2 hours, and let stand for 4 hours to remove bubbles, thus obtaining the alcohol-based adhesive.
[0039] Example 5 An alcohol-based adhesive for removing adhesive residues, the preparation method of which includes the following steps: S1. Weigh 90 parts of rubber FG1924 and 10 parts of rubber D1184AT, mix them, add them to 50 parts of toluene, and stir for 2 hours to completely dissolve and mix the rubber evenly to obtain a rubber solution. S2. Add 50 parts of TA125, 30 parts of TA115, and 20 parts of AS-1020 to 40 parts of toluene and stir for 3 hours to obtain a resin solution. S3. Dissolve 0.5 parts of antioxidant 1010 in 10 parts of toluene and stir at room temperature for half an hour to obtain an antioxidant solution; S4. Add the resin solution to the rubber solution, stir at room temperature for 3 hours, then add the antioxidant solution, stir at room temperature for 2 hours, and let stand for 4 hours to remove bubbles, thus obtaining the alcohol-based adhesive.
[0040] Example 6 An alcohol-based adhesive for removing adhesive residues, the preparation method of which includes the following steps: S1. Weigh 70 parts of rubber FG1924 and 30 parts of rubber D1184AT, mix them, add them to 50 parts of toluene, and stir for 2 hours to completely dissolve and mix the rubbers evenly to obtain a rubber solution. S2. Add 50 parts of TA125, 30 parts of TA115, and 20 parts of AS-1020 to 40 parts of toluene and stir for 3 hours to obtain a resin solution. S3. Dissolve 0.5 parts of antioxidant 1010 in 10 parts of toluene and stir at room temperature for half an hour to obtain an antioxidant solution; S4. Add the resin solution to the rubber solution, stir at room temperature for 3 hours, then add the antioxidant solution, stir at room temperature for 2 hours, and let stand for 4 hours to remove bubbles, thus obtaining the alcohol-based adhesive.
[0041] Comparative Example 1 An adhesive, the preparation method of which includes the following steps: S1. Weigh 90 parts of rubber FG1901 and 10 parts of rubber D1184AT, mix them, add them to 50 parts of toluene, and stir for 2 hours to completely dissolve and mix the rubber evenly to obtain a rubber solution. S2. Add 50 parts of TA125, 30 parts of TA115, and 20 parts of GA-AT to 40 parts of toluene and stir for 3 hours to obtain a resin solution. S3. Dissolve 0.5 parts of antioxidant 1010 in 10 parts of toluene and stir at room temperature for half an hour to obtain an antioxidant solution; S4. Add the resin solution to the rubber solution, stir at room temperature for 3 hours, then add the antioxidant solution, stir at room temperature for 2 hours, and let stand for 4 hours to remove bubbles, thus obtaining the alcohol-based adhesive.
[0042] Comparative Example 2 An adhesive, the preparation method of which includes the following steps: S1. Weigh 90 parts of rubber FG1901 and 10 parts of D1184AT, mix them, add them to 50 parts of toluene, and stir for 2 hours to completely dissolve and mix the rubber evenly to obtain a rubber solution. S2. Add 50 parts of TA125 and 30 parts of TA115 to 40 parts of toluene in sequence and stir for 3 hours to obtain a resin solution. S3. Dissolve 0.5 parts of antioxidant 1010 in 10 parts of toluene and stir at room temperature for half an hour to obtain an antioxidant solution; S4. Add the resin solution to the rubber solution, stir at room temperature for 3 hours, then add the antioxidant solution, stir at room temperature for 2 hours, and let stand for 4 hours to remove bubbles, thus obtaining the alcohol-based adhesive.
[0043] Comparative Example 3 An adhesive, the preparation method of which includes the following steps: S1. Weigh 100 parts of rubber D1184AT and mix them with 50 parts of toluene. Stir for 2 hours to completely dissolve and mix the rubber evenly to obtain a rubber solution. S2. Add 50 parts of TA125, 30 parts of TA115, and 20 parts of AS-1020 to 40 parts of toluene and stir for 3 hours to obtain a resin solution. S3. Dissolve 0.5 parts of antioxidant 1010 in 10 parts of toluene and stir at room temperature for half an hour to obtain an antioxidant solution; S4. Add the resin solution to the rubber solution, stir at room temperature for 3 hours, then add the antioxidant solution, stir at room temperature for 2 hours, and let stand for 4 hours to remove bubbles, thus obtaining the alcohol-based adhesive.
[0044] Comparative Example 4 An adhesive, the preparation method of which includes the following steps: S1. Weigh 90 parts of rubber D1184AT and 10 parts of rubber FG1901, mix them, add them to 50 parts of toluene, and stir for 2 hours to completely dissolve and mix the rubbers evenly to obtain a rubber solution. S2. Add 50 parts of TA125, 30 parts of TA115, and 20 parts of AS-1020 to 40 parts of toluene and stir for 3 hours to obtain a resin solution. S3. Dissolve 0.5 parts of antioxidant 1010 in 10 parts of toluene and stir at room temperature for half an hour to obtain an antioxidant solution; S4. Add the resin solution to the rubber solution, stir at room temperature for 3 hours, then add the antioxidant solution, stir at room temperature for 2 hours, and let stand for 4 hours to remove bubbles, thus obtaining the alcohol-based adhesive.
[0045] The adhesives prepared in the examples and comparative examples were used to prepare alcohol-based adhesive tapes according to the following method, and subsequent performance tests were performed: Apply a 90µm adhesive layer to a 75µm heavy release film, bake at 120°C for 5 minutes to remove the solvent, and then bond the rubber-type adhesive layer to a 25µm light release film to obtain the alcohol release tape.
[0046] Test mechanical properties: (1) 180° peel force test: one side of the tape with a width of 25mm is attached to a standard steel plate and rolled back and forth twice with a 2kg roller (600 mm / min). It is placed at room temperature (23±2 ℃, relative humidity 50 %) for 20 min. Then, a universal tensile testing machine is used to perform 180° peel at 300 mm / min. The test is repeated 3 times and the average value is taken. (2) Initial tack test: Refer to standard GB / T 4852-2002; (3) Holding power test: Refer to standard GB / T 4851-2014.
[0047] The test results are shown in Table 2 below: Table 2 By comparing the test data, we can see that: The tests in Examples 1 to 6 showed that the performance was excellent, with the alcohol viscosity reduction effect reaching over 90%; Example 2 used FG1901 with a high styrene content and a small amount of SIS, and the performance was excellent in all aspects.
[0048] In Comparative Example 1, even though a rubber with a high styrene content was used, the dynamic shear performance decreased because one of the tackifying resins was replaced.
[0049] In Comparative Example 2, no liquid resin was added, which resulted in a decrease in the alcohol's viscosity-reducing properties.
[0050] Comparative Example 3 uses a pure SIS system, and all properties are reduced. The comparative example of rubber used a combination of SIS as the main component and SEBS as the auxiliary component, resulting in a decrease in all properties.
[0051] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details.
Claims
1. An alcohol-based adhesive for removing adhesives, characterized in that, Includes the following raw material components by weight: 30-95 parts of styrene-butadiene-styrene block copolymer, 10-40 parts of SEBS thermoplastic elastomer, 90-100 parts of solvent, 60-130 parts of terpene resin, 10-40 parts of liquid rosin resin, and 3-5 parts of antioxidant.
2. The alcohol-based adhesive degreasing agent according to claim 1, characterized in that, The styrene-butadiene-styrene block copolymer is SBS D1184AT.
3. The alcohol-based adhesive degreasing agent according to claim 1, characterized in that, SEBS thermoplastic elastomer is SEBSFG1901.
4. The alcohol-based adhesive degreasing agent according to claim 1, characterized in that, The terpene resin includes 30-80 parts by weight of terpene resin TA125 and 30-50 parts by weight of terpene resin TA115.
5. The alcohol-based adhesive degreasing agent according to claim 1, characterized in that, Rosin methyl ester is rosin methyl ester AS-1020.
6. The alcohol-based adhesive degreasing agent according to claim 1, characterized in that, The solvent is toluene, and the liquid rosin resin is liquid rosin resin GA-AT.
7. The alcohol-based adhesive degreasing agent according to claim 1, characterized in that, Includes the following raw material components by weight: 30-95 parts SBS D1184AT, 60-190 parts SEBS thermoplastic elastomer, 90-100 parts toluene, 30-80 parts pinene terpene resin TA125, 20-50 parts terpene resin TA115, 10-40 parts liquid rosin resin GA-AT, and 3-5 parts antioxidant 1010.
8. A method for preparing an alcohol-based adhesive as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Add styrene-butadiene-styrene block copolymer and SEBS thermoplastic elastomer to the solvent in the first part, and stir until completely dissolved to obtain a rubber solution; S2. Add the terpene resin and liquid rosin resin to the second solvent and stir to obtain a resin solution; S3. Add the antioxidant to the remaining second part of the solvent, stir, and obtain the antioxidant solution; S4. Add the resin solution to the rubber solution, stir, then add the antioxidant solution, stir, and let stand to degas, to obtain the alcohol-based adhesive.
9. The method for preparing the alcohol-based adhesive according to claim 8, characterized in that, Includes the following steps: S1. Add styrene-butadiene-styrene block copolymer and SEBS thermoplastic elastomer to the solvent in the first part, and stir for 1-4 hours to obtain a rubber solution; S2. Add the terpene resin and liquid rosin resin to the second solvent and stir for 1.5-6 hours to obtain a resin solution; S3. Add the antioxidant to the remaining second part of the solvent and stir for 15-60 minutes to obtain the antioxidant solution. S4. Add the resin solution to the rubber solution and stir at room temperature for 1.5-6 hours. Then add the antioxidant solution and stir at room temperature for 1-4 hours. Let it stand to remove bubbles to obtain the alcohol-based adhesive.
10. An alcohol-based adhesive tape, characterized in that, It is prepared by the following method: The alcohol-based adhesive as described in any one of claims 1-7 is uniformly coated onto the heavy release film, dried, and then a light release film is bonded to the adhesive surface to obtain the alcohol-based adhesive tape.