With the continuous development of the economy, the development of the packaging industry is obvious to all. Plastic packaging bags are more common containers in our lives. When we are choosing packaging bags, what tips do we have? Let's follow the editors today to tell you what are the buying tips:
Tips for buying plastic bags
Sensory detection method:
Non-toxic plastic bag is milky white, translucent, or colorless and transparent, and feels smooth when touched. The toxic plastic bag is cloudy or pale yellow and feels sticky.
Water test method:
Put the plastic bag in the water and press it into the bottom. The non-toxic plastic bag can surface and the toxic plastic bag sinks.
Jitter detection method:
Hold one end of the plastic bag with your hand and shake vigorously. Those who make a crisp sound are non-toxic and those who have a dull sound are poisonous.
Fire detection method:
Non-toxic polyethylene plastic bag is flammable, the flame is blue, drips like candle tears when burning, and has a paraffin smell. The toxic PVC plastic bag is not flammable, it will be extinguished when it is out of fire, and it will give off an irritating odor.