Determination of heat, sealability of films, composite films, coated films . Heat Seal Tester based on the heat sealing method, applicable to the determination of heat seal temperature, dwell time, and pressure of various composite films. Heat Sealer composed of upper and lower heat sealing jaws. Before the test, preset the heat seal temperature, pressure and dwell time value, place the specimen in between the upper and lower jaws. ASTM F2029
