Many people put a layer of cling film on top of the refrigerator before storing it in the refrigerator in the hope that it will be a better place for food preservation. In fact, some cling film on the market is not suitable for putting food in the refrigerator at all To see this issue is modest, but the potential harm is not small.
Cling film currently on the market for sale There are three main categories of raw materials : The first category is polyethylene (PE or ldpe); The second category is polyvinylidene chloride (pvdc); The third category is polyvinyl chloride (PVC). What is the difference between them? We should again How to identify the preservation of different materials Film it?
Polyethylene plastic wrap generally poor viscosity and transparency, easy to open after rubbing hand, while the PVC plastic wrap is better transparency and viscosity, rubbed by hand after the bad spread, easy to stick in the hands; polyethylene preservation After the membrane is ignited with fire, the flame is yellow, leaving the source of fire will not extinguish, dripping phenomenon, and no pungent odor.
Polyethylene (PE or ldpe) is mainly used for the packaging of ordinary fruits, vegetables and the like; polyvinylidene chloride (pvdc) is mainly used for packing some products such as cooked food and ham; and polyvinyl chloride (PVC) can also be used for food packaging .
Here need to be reminded that, in fact, PVC material itself as a food packaging material is safe, but because now many families are accustomed to using microwave oven heating food, in this case is best not to use because PVC film in the production process need to add a lot of plasticization Agents, plasticizers in the heating environment easily released and infiltrated into food, human consumption will interfere with the body's secretion, induce disease.
Consumers must be based on the actual use of cling film or bag selection, purchase should carefully look at the packaging logo. Of course, if you do not understand it, relatively speaking, go Regular supermarket to buy cling film will be more reliable.
