Friday, Aug 14, 2009 at 15:20
e have a Sunbeam brand, and I think the designs differ, which is why Sunbeam bags and tubes have a quilted side on one face, whereas the butchers machines are smooth both sides.
I have tried several smooth plastic options on the Sunbeam. One was a heavy tube of smooth plastic: this welded
well, but didn't allow for proper suction, so the vacuum wasn't created. I think this was because the 'quilting' of the Sunbeam bags/tubes was missing. I have read that the strong suction not only removes the air around the food, but also pulls the air from within the food to a degree, helping with the preservation.
I have tried other, thinner, plastic and the heat from the welding bar was just too much.
So I suspect it is like someone said in an earlier thread this week, it is like ink jet printers - the manufacturers make their money from the sale of consumables, and guess what, you have to use their brand!!
Incidentally, I also had more welding failures using smooth plastic because of the capillary action as the vacuum pump draws the air (and the blood and juices) out of the bag.
I am pretty sure the brands differ enough in the technique, but I have not found a satisfactory cheap alternative for the Sunbeam - yet!!
But let's continue to look for answers!
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