The Recognition Methods of Qualified Laminated Food Packaging Bags

Laminated food packing bags are often used in people's life. But we also have to use carefully, because some laminate food packaging bags are toxic. They can’t be used to packing food directly. So how can we distinguish them from bad laminate food packaging bags?

1. Observe by eyes Non-toxic laminate food packaging bags show a white color. It is transparent or slightly transparent with uniform texture. While toxic laminate food packaging bags is colored. Or although it is white but is in poor transparency. The surface of laminate food packaging bags is uneven, with small particles.

 2. Listen with ears It would make a clear sound if you shake the non-laminatetoxic food packaging bagswith hand. While small and stuffy sound is usually produced by toxic laminate food packaging bags.

3.Touch with hands Have a touch at the surface of the laminate food packaging bags. Non-toxic laminate food packaging bagsare very smooth, while toxic laminate food packaging bags are sticky and have a sense of wax feeling.

4.Smell with nose Non-toxic laminate food packaging bags are tasteless. If laminate food packaging bags have an abnormal smell or taste, then it is toxic.

5.The submerged test method Put laminate food packaging bags into the water, and press them to the bottom with hand. They are non-toxic laminate food packaging bags if they can emerge from the water in a moment. The sunk are toxic laminate food packaging bags.

6.combustion method Non-toxic laminate food packaging bags have yellow flame in the top and local in cyan if burned. It burns like candle tears dripping with a smell of paraffin; Toxic laminate food packaging bags are not easy burnt. It will extinguish once away from the fire. The flame of the laminate food packaging bags is green in some parts.