Chaffee Rotary Band Heat Sealer

How It Works

The bag or material is fed into the throat of the machine. The bands, which are traveling on rotating pulleys, carry the bag or material past spring loaded heating or cooling blocks. The blocks apply pressure and heat, and then cool the material. Often, the blocks will be heat only. The bag or material, now permanently sealed, emerges on the other end of the machine. The principle of operation is that two opposed, counter-rotating steel bands grip the work between them and carry it past electrically heated brass blocks, which transmit heat and pressure through the bands and accomplish a thermal seal. The seal is then cooled and set with cooling blocks.