Shopping bags provided in supermarkets are said to be e […]
Shopping bags provided in supermarkets are said to be environmentally friendly bags. The public must know that true and false is very simple. Just put the empty bags into the water, the environmental protection bags are sinking, and the non-environmental bags are floating on the water. It is a very simple method because of the difference in materials and processes.
Sensory test method: non-toxic non-environmental bag is milky white, translucent, or colorless and transparent, flexible, hand-lubricated, the surface seems to have wax; toxic non-environmental bag color turbid or yellow, feel sticky.
Water detection method: Put the non-environmental bag in the water and press it into the bottom of the water. The non-toxic non-environmental bag has a small specific gravity and can rise to the surface. The toxic non-environmental bag is heavy and sinks.
Jitter detection method: Grab the non-environmental bag with one hand and shake it with force. The person who makes the crisp sound is non-toxic; the voice is boring.
Fire detection method: non-toxic polyethylene non-environmental bag is flammable, the flame is blue, the upper end is yellow, it is dripping like a candle tear when burning, there is paraffin smell, less smoke; toxic PVC non-environmental bag is not flammable, It is extinguished when it leaves the fire, the flame is yellow, the bottom is green, softening can be drawn, and there is a pungent odor of hydrochloric acid.