Most supermarkets in Shanghai have started to use PE fresh-keeping films. On October 25, the General Administration of quality supervision, inspection and Quarantine announced that some PVC (polyvinyl chloride) fresh-keeping films contain (DEHA) plasticizers. In case of grease or high temperature, harmful substances are easy to release into food and endanger human health, so production and sales are stopped. So what fresh-keeping film are some supermarkets in Shanghai selling these days? Will there be a market for PVC fresh-keeping film? Wenhui made an unannounced visit to some supermarkets on November 1. As a result, no PVC fresh-keeping film was found. However, according to insiders, recently, many small factories producing PE fresh-keeping film have sprung up in other provinces and cities. They buy PE fresh-keeping film from regular manufacturers as samples and use raw materials harmful to human health to produce PE fresh-keeping film
in order to better solve the problems in the adhesive process of water-based shoe adhesive, more than 10 kinds of fresh-keeping films sold by Century Lianhua are all made of PE film and PVDC film, and some fresh-keeping films are clearly marked without D EHA. When asked if the salesperson had PVC film for sale, the salesperson denied: "the supermarket has never sold PVC household food preservative film."
at Tesco's Guangxin store, I saw that the same kind of plastic wrap was used for both newly baked steamed buns and loosely cut and separately packed chicken. Fresh food can reach the precision required by flexible packaging by using ordinary lead screws and trapezoidal lead screws. After being sub packed on the chassis, the staff skillfully pull a piece from the fixed fresh-keeping film and wrap it on it. As for the material of the fresh-keeping film, the staff said they knew nothing about it. "It was uniformly distributed by the company, and we don't know what material it was made of.". When asked whether these fresh-keeping films were PE fresh-keeping films or PVC fresh-keeping films with a senior technical R & D team, the salesperson said, "I don't know what PE and PVC mean."
according to the introduction, food preservative films are divided into polyethylene (PE), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC) and other types according to their materials. PVC is widely used in food and vegetable packaging, and its potential harm to human body mainly comes from two aspects. The first is the residual amount of vinyl chloride monomer in the product (the safety limit standard for vinyl chloride to human body is less than 1mg/kg), and the second is the type and content of processing aids used in the processing process. The current international standards and China's national standards allow the limited use of dioctyl adipate (i.e. DOA) as a plasticizer (no more than 35%). The fresh-keeping film made of PVC will interfere with human endocrine after human consumption, causing breast cancer in women, congenital defects in newborns, reduction in the number of male sperm, and even mental diseases
it is reported that the vast majority of supermarkets in the city have already used safe PE and PVDC fresh-keeping films to replace PVC films. However, a large number of PE fresh-keeping films appeared on the market all at once, and there are also quality hidden dangers. Experts warned the public that three principles should be mastered in the safe use of fresh-keeping film: first, use it as little as possible; second, do not use it for too long; third, try not to let the fresh-keeping film come into direct contact with foods with high fat content. Even if it does not contain DEHA formaldehyde: analytically pure food preservative film, it should not be directly used for packaging meat, cooked food and fat food, nor should it be directly heated in a microwave oven
source: Shanghai, China