ASTM D3330 is the primary standard for measuring the peel adhesion of pressure-sensitive tapes. This test evaluates the bond strength between a tape and a substrate, identifying the force required to remove the tape at a specific angle and speed. It is a vital standard for manufacturers in packaging, aerospace, and consumer goods to ensure consistent adhesive performance.
Methods and Mechanics of Peel Testing
The standard includes several testing methods, with the most common being Method A (180 degree peel) and Method C (90 degree peel).
180-Degree Peel: The tape is folded back on itself and pulled parallel to the substrate. This method is often used for evaluating the ultimate bond strength of thin tapes.
90-Degree Peel: The tape is pulled perpendicular to the substrate. This is frequently used for sturdier tapes or when simulating real-world removal angles.
During the test, the TRI system tracks the average force required to sustain the peel over a specific distance, providing a clear profile of the adhesive’s uniformity and bond strength.
TRI System Configuration
Peel testing typically involves lower forces, making the TRI 100 and 200 Series frames the ideal choice for these applications.
The 200 Series: Highly recommended for peel testing due to its extended travel capabilities, which are often necessary when peeling long strips of tape.
Newton Controller: Ensures a precise and constant rate of extension as required by the standard. It provides the high-speed data sampling needed to capture the nuances of the peel force throughout the motion.
Specialized Fixturing: TRI offers 90-degree peel jigs with sliding tables to maintain the pull angle, as well as various grips for 180-degree setups. Like other TRI modular hardware, these fixtures utilize the 16mm (16M/16F) interface for quick setup on systems up to 20 kN.