Food Saver Bags

[rexster]

Just a reminder: Foodsaver type bags rely on small air channels on one side of the bag that allows air to be evacuated by the suction part of the sealer's cycle. If the bags were smooth on both sides the compression of the bags by the sealer's action would not allow air to be evacuated. Chamber style sealers can actually use both types (I know, I have a Vacmaster 320) but actual chamber sealer bags are smooth on both sides since air channels are not needed. Chamber sealers rely on their powerful vacuum pumps to drawn down the air inside the chamber, seal the bag then allow air back. It's sorta a reverse way of how your sealed bag of chips on a plane at a high altitude will expand.