For my year ten science major (which is on material), asks me how plastic bags are made, ive searched all over the internet and cant find anything.
FIRST YOU MAKE A SHEET OF PLASTIC, next your mold in a lock strip at the top on each half. then you fold it in half and bond the edges on two sides, that is the makings of most sandwich bags or freezer bags. garbage bags are taking a sheet of plastic and vaccuumed into a tube. this gives you the shape, the tubes are changed to get the sizes of bags. The plastic is changed to get the mil thickness for heavly duty bags.
TIme to ask How Its Made!
no idea really,i wished i helped
