Cling film Currently on the market most of Cling film and plastic bags commonly used, are ethylene
Parent material as raw material, ethylene masterbatch according to the different types, Cling film can be divided into three categories.
The first is polyethylene, referred to as PE, this material is mainly used for food packaging, we usually bought fruits and vegetables with this Cling film, including procuring semi-finished products in the supermarket are using this material;
The second is a PVC, referred to as PVC, this material can also be used in food packaging, but it was the safety of the human body to a certain extent;
The third is a polyvinylidene chloride, referred to as PVDC, mainly for some of the cooked ham and other products packaging.
In three Cling film, PE and PVDC these two materials Cling film is safe for humans, can be assured, and PVC Cling film containing carcinogenic substances harmful to human body, so when the purchase Cling film should be used in PE Cling film as well.
From the physical point of view, Cling film has a moderate oxygen permeability and moisture permeability, regulation of oxygen around the product is fresh content and moisture content, dust in the air barrier, thereby extending the shelf life of food. Therefore, different food use different Cling film is necessary.
Cling film on the market today can be divided into two categories, one is ordinary Cling film, suitable for refrigerator fresh; one is the microwave Cling film, both for the preservation of the refrigerator, microwave oven can also be used. The latter Cling film in the heat, non-toxic and so much better than ordinary Cling film. Therefore, the choice of consumers to pay special attention to use, sub-use.
