Which plastic bags are toxic?

      Food bags on the market can be like dry, wet, raw and cooked foods. They are safe and non-toxic. Plastic bags for food packaging in food factories and candied factories are of course non-toxic. Plastic bags used to package daily goods, clothes, footwear, electrical appliances, and hardware parts may be toxic and should not contain food.

     Non-toxic plastic bags are usually made of polyethylene, while toxic plastic bags are made of polyvinyl chloride. Since there is an unpolymerized vinyl chloride monomer in the polyvinyl chloride resin, this is a compound which is toxic to the human body. In addition, in the process of processing polyvinyl chloride resin into plastic bags, some auxiliary materials such as plasticizers, stabilizers and pigments are added, and some auxiliary materials are toxic. These toxic substances are easy to be used. The oil or water in the food is extracted and eaten with the food, which is harmful to human health.

     The polyvinyl chloride resin itself is non-toxic. If the free vinyl chloride monomer is reduced to a very small amount in the production of polyvinyl chloride resin, when the finished product is finished, the non-toxic auxiliary material can be strictly selected, and the non-toxic polyvinyl chloride plastic can be made. bag.

     Polyethylene plastic bags and PVC plastic bags are generally difficult to distinguish. It can be easily identified by burning. Polyethylene can burn, the flame is blue, the upper end is yellow, and it smells like paraffin when burning; PVC is extremely difficult to burn, it is yellow when it is on fire, green outside, and it emits a stimulating taste of hydrochloric acid.

     Plastic bags are not poisoned during use, which is also related to the method of use. Some food bags are printed with trademarks and other words on the outside. It is not safe to turn the food bags over when they are used, so that the food is stained with these pigments.