Heat-sealing your valve bags
Valve bags can leak product or let contaminants in. Valve sealers can be added to your bagging line to heat-seal the valve opening, ensuring a complete seal for clean pack- aging and handling and for protection from contamination. This article covers the valve insert, the valve sealer, and how to select a valve sealer.
After a valve bag is filled and laid on its side, product inside the bag presses against and closes the valve. But this doesn't always prevent spills and leaks that commonly occur during handling and shipping.