The roller ball tester for tape initial tack is divided into A method and B method, which is suitable for the initial tack test of pressure-sensitive adhesive tape.
Design standard: GB/T4852, CNS11888

Operation process

Roll the steel balls of different sizes on the inclined plane for 100mm before touching the tape. Using the adhesive properties of the tape, the steel balls stop recording the number of the steel balls and the distance on the tape to judge its initial viscosity.