How to tell if the plastic bag of the suction nozzle is poisonous?
Food spout bags are often used in people's daily life, but you must be careful when using them. Some food spout bags are poisonous and cannot be used to directly hold food. The following are some tips for selecting food spout bags from food roll film, spout bags and food packaging bag manufacturers.
First, observe with eyes
The non-toxic plastic bag is white, bright or slightly bright, with uniform texture. Toxic plastic bags are colored or white, but they are not well-lit, dirty, stretched unevenly, and have small particles.
Secondly, listen with your ears
When the plastic bag is shaken by hand, the clear sound proves that it is a non-toxic plastic bag. The small and muffled sound is a toxic plastic bag.
Again, touch with your hands
Touch the appearance of the food spout bag with your hands. Lubrication is non-toxic. Sticky, astringent and waxy are toxic.
From time to time. Smell with nose
The non-toxic food nozzle bag is tasteless; it is toxic if it affects the smell or abnormal taste.
Finally, the submerged test method
Put the plastic bag in the water, press it to the bottom with your hands, and wait for a while, then the non-toxic food nozzle bag will be exposed from the water, and the toxic food nozzle bag will sink to the bottom.
In addition, the incineration method
The non-toxic plastic bag is flammable, the top of the flame is yellow, and the part is cyan. It drips like a candle, it sheds tears when it burns, and it smells of white wax. Toxic plastic bags are not easy to burn and extinguish immediately after leaving the fire. The top of the fire is yellow or black, and the bottom is green. Softening can lead to stringiness, and a pungent odor can also be smelled.
