The importance of the price of plastic wrap when buying
In our daily life, cling film can be said to be very important. With the gradual acceleration of the pace of people’s lives, more and more people have no spare time to go shopping, so they often buy one when they go to the supermarket. A lot of fruits, vegetables and meat products need to use plastic wrap at this time. So how much is the price of plastic wrap during the purchase process? How should we choose according to the price of plastic wrap? Today, I will talk with you about the importance of the price of plastic wrap and some precautions in the purchase process.
In the process of purchasing cling film or fresh-keeping box, in addition to the price of the cling film, be sure to observe whether the surface of the cling film has been marked with a specific name and chemical structure. If there is only an English name and no Chinese mark Products must be purchased carefully. At the same time, because the cling film comes into contact with food, you must choose products that are marked with food, so that everyone's safety can be guaranteed.
The price of cling film is also greatly related to its material. At present, cling film is mainly composed of two materials, namely polyethylene and polypropylene. The price difference between the two types of cling film is not very large, but you can buy polypropylene products. It can better prevent oil from penetrating inside. When choosing the price of cling film, you can buy self-adhesive products made of polyethylene. Especially when it is used for the preservation of fruit and meat foods, because in terms of safety, PE-made plastic wrap is relatively safe. If you want a longer shelf life, you can choose polyvinylidene chloride, because this kind of plastic wrap has better moisturizing properties, and it has a longer shelf life among the three different types of plastic wrap.
PVC cling film has good transparency, good viscosity, good elasticity, and relatively cheap price, so it has become the choice of many people. The resin composed of plasticizer and antioxidant is non-toxic. However, the main auxiliary materials such as plasticizers and antioxidants are toxic. The plasticizers in daily PVC plastics mainly use dibutyl terephthalate and dioctyl phthalate. These chemicals All are toxic, and the oil in food can easily dissolve the plasticizer "ethyl ammonia" in the cling film, which has a great damaging effect on the human endocrine system and disrupts the body's hormone metabolism.
Polyvinyl chloride containing lead salt is used for food packaging. When it meets with fried dough sticks, fried cakes, fried fish, cooked meat products, cakes and snacks, it will cause lead molecules to diffuse into the grease, so PVC plastic bags cannot be used. Contain oily foods.
Today’s introduction to the price of plastic wrap is here, and I hope this article can be helpful to everyone.