Heat sealing performance is paramount for plastic packaging films. The Heat Seal Tester QualiSeal-A1 offers precise measurements of optimal heat sealing temperature range, sealing speed, pressure, and more for various plastic film substrates, flexible packaging composites, coated paper, aluminum foil, and other heat sealing combinations. It is ideal for scientific research, educational experiments in plastic film, food, and pharmaceutical manufacturing for quality control, testing institutions, and schools.