The ASTM D6252/D6252M-1998 (2019) Standard Test Method for Disbonding Adhesion of Pressure Sensitive Label Materials at a 90 Degree Angle specifies a test method for determining the disbonding adhesion of pressure sensitive label materials. This method evaluates the strength of adhesion by disbonding the label at a 90 degree angle by applying a certain angle and tension between the label and the substrate. This test is suitable for various types of pressure sensitive labels and can effectively measure the adhesion performance of label materials under different conditions. The test results help to optimize the design and production of labels, ensure their reliability and durability in actual use, and are widely used in Encasement, logistics, commodity labeling and other industries to ensure the stability and effectiveness of labels during transportation, storage and use.