So how do you keep all the different bag Packing machine? It really depends on what it's made of. Cotton reusable grocery bags and many hemp reusable grocery bags are machine washable and dryer safe-making them the easiest to wash. If it is screenprinted or dyed in any way, you should wash in cold water for the first few washings. Some polyester reusable grocery bags can be machine washed, but we only recommend machine washing 'poly-canvas'.Nonwoven polypropylene and recycled PET reusable bags are trickier to clean.
Some people do wash these bags in a washing machine, but we don't recommend it. If you feel you must machine wash these bags, use cold water only and definitely don't put them in the dryer. However, machine washing shortens the overall lifespan and can ruin them.
A recent study funded by the American Chemistry Council found that nearly every reusable bag examined for bacteria contained bugs, coliform bacteria (suggesting raw-meat or uncooked-food contamination) or E. coli. However, the study didn't specify which strains of E. coli were found-many of which are harmless. And don't forget that the American Chemistry Council represents plastic Ton bag packing machine makers, and opposes a California Bill that would ban single-use plastic bags.