What do you know about single use bags ?

Plastic bags appeared on the scene in the late 1950s ,used as shopping bags and made from various kind of plastic ,proliferating for everything from bread packaging to trash. 

These bags are sometimes called as single -use bags. Today they are blown on sheets of melted petroleum or ethylene pellets. Though most are used only once.  colour concentrates and other additives are often used to add tint to the plastic .carbon-negative machine that converts plastic bags and other trash back into petroleum