PE fresh-keeping film rushed to fill the shortage, and fake and shoddy substitutes frequently appeared on the market. On October 25, the General Administration of quality supervision, inspection and Quarantine announced that some PVC (polyvinyl chloride) fresh-keeping films contain (DEHA) plasticizers. When encountering grease or high temperature, harmful substances are easy to release and enter food, endangering human health, so production and sales are stopped. At the same time, it is forbidden to directly package meat, cooked food and greasy food with PVC fresh-keeping film
as soon as the ban came out, supermarkets and shopping malls have switched to PE (polyethylene) fresh-keeping film. Facing the stage vacated by PVC film, can PE film make a "full house" as soon as it appears? It is reported that the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China has conducted a nationwide spot check on the quality of fresh-keeping film of electro-hydraulic servo universal material testing machines with pe30t or more. Compared with electronic universal testing machines, nearly half of them may be difficult to meet the standard
two "yellow" become one "red", PE has exited
Shanghai Plastic Products Research Institute, located in Jinqiao, is the drafting unit of China's first national standard for PE fresh-keeping film. "Three years ago, ALA cooperated with agriculture, industry and commerce, but finally withdrew." Talking about PE fresh-keeping film, Wu Qiang, the assistant director who has been dealing with it for more than 20 years, showed a wry smile on his face
he told that at the beginning, the person in charge of agricultural industry and Commerce No.118 store saw the hidden dangers of PVC film, and negotiated with the research institute to invite PE film into the supermarket and hang up the "green packaging" sign to extend its service life. But within a few days of the trial implementation of the new measure, the supplier measured the "yellow card": the anti fog performance of PE film is too poor, and the "water mist" formed when it is cold and hot cannot be dissipated. Customers can't even see what they are packing. How can they take out money
after pondering for a long time, Lao Wu found a way to deal with it. He added the anti dew agent contained in PVC to the PE fresh-keeping film. Although the "secret recipe" could not achieve the maximum effect because of the processing temperature, and the water mist would not disappear for a while, it was a dangerous pass
a few days later, the suppliers took out their second "yellow card": PE fresh-keeping film was too sticky, packaging was time-consuming and laborious, and labor expenditure was too high. "This is really a hard injury." Lao Wu said that because of the weak self-adhesive and difficult sealing, the efficiency of wrapping food with PE film is half lower than that of PVC film at the same time. "But the properties of material are difficult to change."
since there is no workaround, two "yellow cards" become one "red card", and PE fresh-keeping film can only leave the field in a gloomy way
there is a shortage of soldiers in the array, and PE is difficult to fill the vacancy
times have changed. Although PE fresh-keeping film has become a "new favorite", many manufacturers are still unhappy
a manufacturer surnamed Lin revealed that according to incomplete statistics, at present, the country needs 20000 tons of fresh-keeping film every year, while the annual production capacity of regular manufacturers is less than 10000 tons. As far as Shanghai is concerned, the consumption of a hypermarket in one month is 3 tons. Now dozens of manufacturers are changing clothes together, and only four or five manufacturers can't cope with tens of tons of energy
at the same time, due to the long-term small batch production, the specification of PE fresh-keeping film is mostly 30 cm wide "family clothes", while supermarkets and stores need different models of 35, 40, 45 cm, etc. No wonder boss Lin sighed that these days, many supermarkets ordered from him, "the size is broken, the output is insufficient, and the new equipment and production process can't be launched immediately, so I want to make money."
fake and shoddy people often appear, PE adds new wounds
since regular enterprises can't quickly occupy the market, many "brain activating" based on the provisions of the national standard on the external impact resistance test method of plastic pipes, the "wild way" sees this opportunity to "get a ticket"
Mr. Liu, who is well versed in the mystery, said that recently, many small factories producing PE fresh-keeping film suddenly appeared in Shanghai and surrounding areas. They bought PE fresh-keeping film from regular manufacturers as samples to make gimmicks for customers and started the business of "hanging sheep's heads and selling dog meat"
Mr. Liu said that most of the raw materials purchased by formal enterprises in Shanghai are Shanghai Petrochemical edible Q200 polyethylene, and those small factories actually use agricultural or industrial raw materials in order to save copper and tin. These polyethylene contain antioxidants, opening agents and other chemicals, which are harmful to human body but not beneficial
what's more annoying is that these underground factories are still thinking about the thickness of fresh-keeping film. Mr. Liu said that the normal thickness of PE fresh-keeping film should be 1.1 silk meters (1 silk meter =0.1 mm), but the "Daxing goods" of some manufacturers are only 0.6 silk meters. "As thin as cicada wings" 4 The "crap" with high output impedance can't stand high temperature baking. As soon as they enter the microwave oven, they break their appearance, and their faces are "scalded" with holes. The melted "poison" takes advantage of the situation to drill into the delicious food
source: Xinmin Evening News