Will iron make any pollution when it is melted again?
Like the plastic film made of polyethylene, polypropylene, EVA and other plastic is generally non-toxic, widely used in food packaging industry. And PVC plastic plastic film due to the addition of stabilizers containing lead and cadmium, it is harmful to humans, but if the use of PVC non-toxic formula (using non-toxic stabilizer and plasticizer, etc.) made of plastic film can be used for food packaging.
Plastic products are plastic particles or plastic powder heating melting molding. As to whether plastic bags are harmful to the human body, it depends on whether the raw materials and additives used to make plastic bags are harmful to human body