Can PE fresh-keeping film be used in high temperature environment?

19-09-2019

According to the relevant survey data, the household food fresh-keeping film (PE fresh-keeping film) sold on the market in China has been recognized as a product of zero toxic substances by all countries. Some media reported that most of the sales areas of carcinogenic PVC fresh-keeping film are related to the fresh and cooked food departments of supermarkets. People usually use it to pack fresh fish, cooked food, fruit and some bulk food. It should be noted that foods with such bags should not be heated directly, as this may accelerate the decomposition and release of carcinogens.

When we use PE fresh-keeping film, we also have certain conditions. We know that PE fresh-keeping film under normal temperature environment refuses to be heated. Generally, those PE fresh-keeping film that can be heated should also pay attention not to melt in the heating process, or release the corresponding toxicity. Matter.

I "see" the detailed product description of PE fresh-keeping film, if the instructions are printed with the corresponding PE fresh-keeping film or polyethylene fresh-keeping film, indicating that you can safely use it; if the above is written with PVC (polyvinyl chloride) or no detailed material description, you are well advised not to buy.

Second, "Touch" PE fresh-keeping film, people with common sense will know that polyethylene fresh-keeping film tactile will give you a not very sticky, not very transparent feeling, if you use hand rubbing later open or relatively simple, but PVC fresh-keeping film on the contrary, easy to stick hands.

3. "Fire" PE fresh-keeping film, after the polyethylene fresh-keeping film ignited, the flame color is yellow, and you will find that far away from the source of fire will not immediately extinguish, will be accompanied by oil dripping phenomenon, and there is no pungent odor; but after the polyvinyl chloride fresh-keeping film burned, the flame color is yellow-green, accompanied by a lot of smoke. There will be no dropping of oil. It will be extinguished after leaving the fire source. It has a strong pungent odor.

Relevant suggestions of PE fresh-keeping film: No matter what kind of inner material you use, you should pay attention to the following points when using it:

1. The use temperature of the film is generally between 120 and 40 below zero.

2. Fresh-keeping film refuses to contact food directly for a long time.

3. We should make several cracks or holes on the fresh-keeping film to avoid blasting and prevent high-temperature water vapor falling from the film to food.


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