Impulse Sealing vs. Direct Heat Sealing - Sealer
2012-11-20 · Impulse sealers only use power when the jaw is lowered. **So if you are just sealing your every day poly bags, an impulse sealer will do the trick.**. a 5mm impulse sealer will do the trick for this poly bag. Direct heat sealers (constant heat) – maintain constant heat in both jaws.
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