Polylactic acid pressure-sensitive bonding adhesive tape capable of complete biodegradation and preparation method thereof
A biodegradable, pressure-sensitive adhesive technology, applied in the direction of film/sheet adhesives, adhesives, etc., can solve environmental hazards and other problems, achieve energy saving, environmental protection, and reduce production costs
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[0026] Example 1. (1) The two surfaces of the polylactic acid biaxially oriented film with the number average molecular weight of the polylactic acid biaxially oriented film of 30,000 and the biaxially oriented film thickness of 10um are respectively coated with a release agent and a pressure sensitive Adhesive, release agent dosage is 0.1g / m 2 , The dosage of solution type polymethacrylate pressure sensitive adhesive is 25g / m 2 , The solvent is a mixed solution of acetone and hexane, the mass ratio of the two is 1:2, and the mass ratio of the solvent to the polymethacrylate is 100:30, and the film coated with the release agent and the pressure-sensitive adhesive is obtained ;
[0027] The pressure-sensitive adhesive is a solution type acrylic polymer, which is at least one of polyacrylate, polymethacrylate, polyethyl acrylate, polypropyl acrylate and polybutyl acrylate;
[0028] Said release agent is: methyl vinyl silicone rubber release agent;
[0029] (2) After coating the rele...
Example Embodiment
[0031] Example 2. (1) The two surfaces of the polylactic acid biaxially oriented film whose number average molecular weight is 200,000 and the biaxially oriented film thickness is 200um are coated with release agent and pressure sensitive respectively. Adhesive, release agent dosage is 2.0g / m 2 , The dosage of solution type polybutyl acrylate pressure sensitive adhesive is 45g / m 2 , The solvent is a mixed solution of acetone and hexane, the mass ratio of the two is 1:2, and the mass ratio of the solvent to the polybutyl acrylate is 100:50 to obtain a film coated with release agent and pressure-sensitive adhesive ;
[0032] The pressure-sensitive adhesive is a solution type acrylic polymer, which is at least one of polyacrylate, polymethacrylate, polyethyl acrylate, polypropyl acrylate and polybutyl acrylate;
[0033] Said release agent is: methyl vinyl silicone rubber release agent;
[0034] (2) After coating the release agent and pressure-sensitive adhesive, the film is dried by ...
Example Embodiment
[0036] Example 3. (1) The two surfaces of the polylactic acid biaxially oriented film whose number average molecular weight is 80,000 and the biaxially oriented film thickness is 100um are coated with release agent and pressure sensitive respectively. Adhesive, release agent dosage is 1.0g / m 2 , The dosage of solution type polyethyl acrylate pressure sensitive adhesive is 40g / m 2 , The solvent is a mixed solution of acetone and hexane, the mass ratio of the two is 1:2, and the mass ratio of the solvent to the polyethyl acrylate is 100:45 to obtain the film coated with the release agent and the pressure-sensitive adhesive ;
[0037] The pressure-sensitive adhesive is a solution type acrylic polymer, which is at least one of polyacrylate, polymethacrylate, polyethyl acrylate, polypropyl acrylate and polybutyl acrylate;
[0038] Said release agent is: methyl vinyl silicone rubber release agent;
[0039] (2) After coating the release agent and pressure-sensitive adhesive, the film is ...
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