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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

Inactive Publication Date: 2008-01-16
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, tapes based on polyolefins have caused great harm to the environment after being discarded.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1.(1) The number-average molecular weight of the polylactic acid biaxially oriented film is 30,000, and the thickness of the biaxially oriented film is 10um. Two surfaces of the polylactic acid biaxially oriented film of the back material are coated with release agent and pressure-sensitive Adhesive, release agent dosage is 0.1g / m 2 , the amount 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, the mass ratio of the solvent to polymethacrylate is 100:30, and the film coated with release agent and pressure-sensitive adhesive is obtained ;

[0027] The pressure-sensitive adhesive is a solution-type acrylate polymer, which is at least one of polyacrylate, polymethacrylate, polyethylacrylate, polypropylacrylate and polybutylacrylate;

[0028] The release agent is: methyl vinyl silicone rubber release agent;

[0029] (2) The film coated with the rel...

Embodiment 2

[0031] Embodiment 2. (1) at the number average molecular weight of polylactic acid biaxially oriented film 200,000, the two surfaces of the polylactic acid biaxially oriented film of the back material that biaxially oriented film thickness is 200um coat release agent and pressure-sensitive Adhesive, release agent dosage is 2.0g / m 2 , the amount of solution-type polybutylacrylate 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, the mass ratio of solvent to polybutyl acrylate is 100:50, and the film coated with release agent and pressure-sensitive adhesive is obtained ;

[0032] The pressure-sensitive adhesive is a solution-type acrylate polymer, which is at least one of polyacrylate, polymethacrylate, polyethylacrylate, polypropylacrylate and polybutylacrylate;

[0033] The release agent is: methyl vinyl silicone rubber release agent;

[0034] (2) The film coated with the release agent and the p...

Embodiment 3

[0036] Embodiment 3. (1) at the number-average molecular weight of polylactic acid biaxially oriented film 80,000, the two surfaces of the polylactic acid biaxially oriented film of the back material that biaxially oriented film thickness is 100um are coated with release agent and pressure sensitive Adhesive, release agent dosage is 1.0g / m 2 , the amount of solution-type polyethylacrylate 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, the mass ratio of solvent to polyethyl acrylate is 100:45, and the film coated with release agent and pressure-sensitive adhesive is obtained ;

[0037] The pressure-sensitive adhesive is a solution-type acrylate polymer, which is at least one of polyacrylate, polymethacrylate, polyethylacrylate, polypropylacrylate and polybutylacrylate;

[0038] The release agent is: methyl vinyl silicone rubber release agent;

[0039] (2) The film coated with the release agent...

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Abstract

The invention relates to a polylactic pressure sensitive adhesive tape which can be completely biodegraded and the preparation method. The adhesive tape comprises a back material of polylactic biaxial film, a pressure sensitive adhesive layer on one major surface and a release agent layer on another major surface. The polylactic pressure sensitive adhesive tape is provided with biodegradability and has no pollution to the environment. The invention also provides a method of making the polylactic pressure sensitive adhesive tape, wherein the temperature drops from 100-140 DEG C to 40-70 DEG C in the drying technology, which reduces energy consumption and production cost.

Description

technical field [0001] The invention relates to a fully biodegradable polylactic acid pressure-sensitive adhesive tape and a preparation method thereof, belonging to the field of polymer material processing. Background technique [0002] The negative impact of waste of polymer materials on the environment has aroused people's widespread concern, and solving the increasingly serious "white pollution" problem has become a common concern of people. Therefore, the research and development of degradable plastics at home and abroad are very active, and some of them have started industrial production, and the development is quite rapid. Biodegradable plastics not only have the excellent performance of the plastic itself when used, but also do not pollute the environment when discarded after use, and can be quickly decomposed by various organisms (enzymes). Therefore, vigorously developing and promoting environmentally biodegradable polymer materials is the only way to cure the sym...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J167/04
Inventor 刘南安冉祥海韩常玉董丽松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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