Testing Procedure
Testing protocols for the peel adhesion of pressure sensitive tapes provide the primary framework for evaluating bond strength in packaging applications. These methods in astm d3330 describe the measurement of the force required to remove a tape from a standard stainless steel panel or its own backing at a specific angle and speed. Variations within the document account for different tape constructions and substrate conditions.
Adhesion Measurement
Measurement occurs by pulling the tape at an angle of 180 degrees or 90 degrees depending on the specific method selected. High speed automated equipment ensures that the rate of removal remains constant throughout the test duration. This consistency allows for the comparison of different adhesive formulations under identical conditions.
Results are typically expressed in newtons per meter or ounces per inch of width. Data collected from astm d3330 helps engineers predict how a shipping carton seal will behave when subjected to the mechanical stresses of transit and handling.
Performance Limit
Boundaries for the test rely on the integrity of the tape carrier and the state of the test surface. If the backing breaks before the adhesive releases, the result records the tensile strength rather than the peel value. Surface contamination or improper cleaning of the test panel invalidates the reading.
Accurate data requires strict temperature and humidity control during the conditioning phase.
