Food cling film safety and material requirements
Food cling film can be divided into polyvinyl chloride and polyethylene according to its material when it is used. PE cling film is mainly sold in various supermarkets, while PVC cling film is mainly fresh and bulk food in supermarket. The district does food packaging, and in addition to various types of hotels and restaurants, group customers purchase more. Among all kinds of plastic wrap, PVC has the largest market share due to its low price, about six to seventy percent.
When buying food wrap, it is recommended to buy a self-adhesive cling film made of PE material. Especially when it is used for preserving meat, fruits, etc., because of the safety, PE cling film is the safest. of. If you want a longer shelf life, it is recommended to choose polyvinylidene chloride (PVDC), because the plastic film of this material has better moisturizing performance and the longest shelf life in the three layers of plastic wrap. Polyvinyl chloride (PVC) cling film has good transparency, good viscosity, good elasticity and low price, so it has become a choice for many people, but it must be noted that it cannot be used for the preservation of fatty foods because it is made of poly A resin composed of a vinyl chloride resin, a plasticizer and an antioxidant is not inherently toxic.
The food wrap is added with plasticizers, anti-aging agents and other main excipients. The plasticizers in daily-use polyvinyl chloride plastics mainly use dibutyl terephthalate and dioctyl phthalate. Etc., these chemicals are toxic, and the oil in the food is easy to dissolve the plasticizer "ethyl ammonia" in the plastic wrap, which has a great destructive effect on the human endocrine system and will disturb the body's hormone metabolism.
Lead in polyvinyl chloride (PVC) products containing lead salt antioxidants in food wrap will be precipitated by contact with ethanol, ether and other solvents. When the lead-containing polyvinyl chloride is used as a food packaging and meets fritters, fried cakes, fried fish, cooked meat products, and cake snacks, the lead molecules will diffuse into the grease, so PVC plastic bags cannot be used. Contains oily foods. In addition, it should not be heated in a microwave oven and should not be used at high temperatures Because polyvinyl chloride plastic products will slowly decompose hydrogen chloride gas at a relatively high temperature, such as about 50 ° C, this gas is harmful to the human body, so PVC products should not be used as food packaging.
When buying food wrap, it is recommended to buy a self-adhesive cling film made of PE material. Especially when it is used for preserving meat, fruits, etc., because of the safety, PE cling film is the safest. of. If you want a longer shelf life, it is recommended to choose polyvinylidene chloride (PVDC), because the plastic film of this material has better moisturizing performance and the longest shelf life in the three layers of plastic wrap. Polyvinyl chloride (PVC) cling film has good transparency, good viscosity, good elasticity and low price, so it has become a choice for many people, but it must be noted that it cannot be used for the preservation of fatty foods because it is made of poly A resin composed of a vinyl chloride resin, a plasticizer and an antioxidant is not inherently toxic.
The food wrap is added with plasticizers, anti-aging agents and other main excipients. The plasticizers in daily-use polyvinyl chloride plastics mainly use dibutyl terephthalate and dioctyl phthalate. Etc., these chemicals are toxic, and the oil in the food is easy to dissolve the plasticizer "ethyl ammonia" in the plastic wrap, which has a great destructive effect on the human endocrine system and will disturb the body's hormone metabolism.
Lead in polyvinyl chloride (PVC) products containing lead salt antioxidants in food wrap will be precipitated by contact with ethanol, ether and other solvents. When the lead-containing polyvinyl chloride is used as a food packaging and meets fritters, fried cakes, fried fish, cooked meat products, and cake snacks, the lead molecules will diffuse into the grease, so PVC plastic bags cannot be used. Contains oily foods. In addition, it should not be heated in a microwave oven and should not be used at high temperatures Because polyvinyl chloride plastic products will slowly decompose hydrogen chloride gas at a relatively high temperature, such as about 50 ° C, this gas is harmful to the human body, so PVC products should not be used as food packaging.