subject: Six Strokes Identification Of Toxic Plastic Bags [print this page] Plastic bags are made of plastic film, using it to contain food or other articles of daily use, very convenient. Food plastic bags often use in the people's lives, but when used must also be careful, some plastic bags are poisonous, can not be used directly put food.
Plastic bags mainly has two kinds, one kind is non-toxic, they are made from raw materials such as polyethylene, polypropylene and melamine, can be used to put food ; Another kind is poisonous, they are made of vinyl chloride by, this can only be the general use of packaging, if use to the packaging food there is the risk of poisoning.
Non-toxic plastic bags are generally use polyethylene, and toxic plastic bags are with polyvinyl chloride (PVC) do. Because PVC resin has not polymerization of vinyl chloride monomer, which is the human body produce toxic compounds. Besides, PVC resin processing into plastic bags in the process, and add some plasticizer, stabilizer, pigment and auxiliary material, some auxiliary material is poisonous, the toxic substances in use, and easy to be food of oil or water extraction out, and food eat together down, to human body health is harmful.
However, how to distinguish the two plastic bagsBelow we teach you several methods to identify!
First, use eye observation method
Non-toxic plastic bags is white, transparent or micro transparent, quality of a material is uniform, Toxic plastic bags is color or is for white, but poor transparency, the turbidity, plastic surface tension uneven, there are small particles.
Second, listening with ears
Use hand hard jitter plastic bag, giving crisp sound that is non-toxic plastic; sound small and boring is toxic plastic bag.
Third, use the hand touch
With the hand touch plastic bags surface, it is smooth is non-toxic, sticky, astringent, waxy sense are poisonous.
Fourth, use the nose to smell
The non-toxic plastic bag is tasteless; irritating smell or taste not normal is toxic.
Fifth, Submerged water test method
Put the plastic bag into the water, with the hand will its according to the water bottom, wait a moment, surfaced is non-toxic plastic bag, sink to the bottom of the is toxic plastic bag.
Sixth, the combustion method
Polyethylene plastic bags and polyvinyl chloride (PVC) plastic bags are general difficult points clear. Use the burning way, could easily distinguish. Polyethylene can burn, flame is blue, top show yellow, when burning, the emitting paraffin smell; Polyvinyl chloride (PVC) very difficult to burn, when the fire broke out in yellow, outside the green, and sent out the hydrochloric pungent taste. Non-toxic plastic bags flammable, flame tip yellow, partially cyan, burning like a candle tears dripping, with paraffin flavor; Toxic plastic bag is not easy to burn, namely that is put out from the fire, the flame tip yellow, the bottom of the green, softening can drawing.
Plastic bags in use have poison or not, this also has a relationship with the use of method. Some food bags outside the trademark printing words flower, if you use the food bag turn, let the food stained these pigments is unsafe.
Guangzhou Panyu Golden Light Poly-Bag Co., Ltd. is a well-known manufacturer of plastic bags, its mainly produces different series of bags, its products included packaging bags,OPP bags, zipper bags and so on.
