How to buy plastic wrap?
|When buying plastic wrap, first buy a self-adhesive plastic wrap made of polyethylene (PE) material, especially when preserving meat, fruit, etc. Because of the safety, PE wrap is the safest. . If you want a longer shelf life, it is recommended to choose polyvinylidene chloride (PVDC), because the preservation of this material is better than the preservation of the film, the preservation period of the three materials in the preservation period is the longest.|
Polyvinyl chloride (PVC) cling film has become a popular choice due to its good transparency, good viscosity, good elasticity, and low price, but it must be taken care not to be used as a preservation of fats and oils because it is made of poly. Resins consisting of vinyl chloride resins, plasticizers and antioxidants are not toxic in nature. However, the main auxiliary materials such as plasticizers and anti-aging agents added are toxic. The plasticizers in daily-use PVC plastics mainly use dibutyl terephthalate and dioctyl phthalate, etc. All of them are toxic, and the oil in the food can easily dissolve the plasticizer “ethylammonia” in the plastic wrap, which will greatly destroy the human endocrine system and disturb the body's hormone metabolism.
There are polyvinyl chloride antioxidants lead stearate salt is also toxic. Lead (PVC) products containing lead salt antioxidants are exposed in contact with ethanol, ether, and other solvents. Lead-containing polyvinyl chloride used as food packaging and oil sticks, fried cakes, fried fish, cooked meat products, cakes and dim sum products will lead to the diffusion of lead molecules into the grease, so you can not use the PVC plastic bag Contain oily foods. In addition, it must not be heated in a microwave oven, and must not be used in high temperatures Because the PVC plastic products will slowly decompose the hydrogen chloride gas at a relatively high temperature, such as about 50°C, this gas is harmful to the human body, and thus the PVC product is not suitable as a food packaging material.