Hidden worries in the hottest food packaging bag

2022-08-08
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Hidden worries are hidden in the food packaging bag

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the food just produced has a pungent smell when opening the packaging bag. It is this taste of unknown origin that has caused an enterprise in Gansu to fail to sell its products on the market, and the enterprise has been forced to close down so far. So, is this peculiar smell caused by unqualified condiments and other raw materials in food production, or by production equipment? After testing by legal inspection institutions and textual research by relevant experts, the root cause of the problem was finally found - the culprit was the small packaging bag that everyone turned a blind eye to

At the end of October last year, a potato chip processing factory in Dingxi City, Gansu Province was preparing to bring its products to the market. When the finished products were inspected before delivery, it smelled a pungent odor when opening the food packaging bag. What is the taste of this thing? This "mysterious" flavor has put an enterprise that has just been put into production into a dilemma

in order to find out the causes as soon as possible and ensure the quality of ex factory products, the factory carefully inspected and analyzed every production link, raw materials and finished products, and verified the equipment manufacturer, but it has not found the real cause. After a preliminary test by Lanzhou University, it was found that benzene substances in food packaging bags were the culprits, and benzene compounds can cause cancer. After reaching this conclusion, the potato chip factory and the packaging and printing company held several consultations on the quality of packaging bags. Previously, both parties agreed that the material for making food packaging roll film was CPP aluminum plating

although the color printing company in Lanzhou admitted that there was a problem with the roll film it produced, it refused to compensate the potato chip factory for its economic losses. In desperation, the potato chip factory sent its complaint to the Inspection Brigade of Lanzhou Bureau of quality and technical supervision in March this year

after receiving the complaint, the law enforcement officers of the team immediately launched an investigation, and took samples of the composite aluminized roll film used by the color printing company to produce food packaging bags for the potato chip factory, and sent them to Gansu product quality supervision and Inspection Center for hygiene index testing. The test results showed that the residual amount of benzene solvent in the composite aluminum coating film of this batch of packaging bags exceeded the requirements of the national standard and was judged as unqualified products. At this time, the mystery was finally solved...

emergency deployment inventory of packaging

after learning the news that the composite aluminum coating film was unqualified, Lanzhou Municipal Bureau of quality and technical supervision keenly seized this clue and made an emergency deployment to carry out a special inspection on the city's packaging enterprises to eliminate the hidden dangers of food packaging

in this special action, Lanzhou Municipal Bureau of quality and technical supervision also conducted a pull inventory of the packaging materials used by more than 280 food enterprises in the city. Among the 14 packaging enterprises that have been inspected, 8 food packaging products were selected and sent to the national packaging product quality supervision and Inspection Center (Chengdu) for inspection. However, judging from the composite film products of the four enterprises that have been tested, the quality of the composite aluminum coating is worrying

on April 18, 2005, the law enforcement personnel of the Inspection Brigade of Lanzhou quality and Technical Supervision Bureau found during the inspection of Lanzhou Senjie Packaging Co., Ltd. that the company not only did not have the necessary quality inspection equipment, but also did not have the means of product quality control, and the odor in the production workshop was serious. In the finished product warehouse of the company, there are 60200 composite aluminized film food packaging bags with the logo of "Qinghai Minhe River Valley dairy products Co., Ltd." and the trademark of "River Valley brand" Chuankou milk powder

the inspection results of the national packaging product quality supervision and inspection center showed that the benzene solvent residue of this batch of packaging products was 30.2mg/m2, which was 10 times higher than the amount specified in the national standard. After receiving the inspection report, the law enforcement officers rushed to Lanzhou Senjie Packaging Co., Ltd. to seal up the packages, but found that they had been transported away by Qinghai Minhe River Valley dairy products Co., Ltd. On June 2, Lanzhou Municipal Bureau of quality and technical supervision made a punishment decision on Lanzhou Senjie Packaging Co., Ltd. according to law, and sent an assistance letter to Qinghai Provincial Bureau of quality and technical supervision to track down unqualified milk powder packaging bags

on June 3, the quality and technical supervision departments of Gansu and Qinghai provinces joined hands for the first time. With the cooperation of Qinghai quality and technical supervision department, the law enforcement personnel of Lanzhou quality and Technical Supervision Bureau conducted a joint inspection and evidence collection on Qinghai Minhe River Valley dairy products Co., Ltd. and found 10500 unqualified composite aluminized film food packaging bags on the spot, with milk powder packed inside for sale, and 47674 unused

where the hidden dangers of packaging come from

don't know if you don't check it, you'll be surprised if you check it. So why do Benzene poisons remain in food packaging bags? It is understood that the production process of composite aluminized film food packaging bags generally includes the following processes: raw material cutting - inking and color printing - compounding - incubation - bag making - Inspection - warehousing

relevant people believe that the ink, diluent and adhesive used in the whole packaging bag production process may contain benzene. In a plastic color printing company in Lanzhou, which produces packaging bags for potato chip factories, the process flow, management system and product quality inspection standards are pasted on the wall of the production workshop

a technician surnamed Chen said that the entire packaging industry knows that toluene cannot be mixed into the raw materials for the production of food packaging bags. There is a certain proportion of various substances used in inking. The ripening time for volatile odor and plastic surgery should be 24-36 hours. Their product delivery inspection depends on sniffing. Ms. sun, the business director of the company, analyzed the quality problem of packaging bags complained by the potato chip factory and believed that it might be caused by both parties. As far as the company itself is concerned, there are problems with the raw materials purchased and the production process is not perfect. At that time, the potato chip factory was eager for goods, and the composite film did not meet the ripening time requirements, resulting in the subsequent phenomenon of ink falling and delamination. From the potato chip factory, the fried food they produce is put into the food bag with ink delamination at high temperature, and the chemicals in the ink will affect the quality of the food

in Lanzhou, China's experimental machine industry is bound to have a larger role as the production workshop of Zhou Senjie Packaging Co., Ltd. the pungent smell makes people very uncomfortable. People can stay in it for up to fourorfive minutes, while their production personnel say "I don't feel it" in this environment

Lin, general manager of the company, said that they came from the south only in April this year. Valley milk powder bag is their third business, and it is also the first time to produce food packaging bags. Their production technicians were brought from Zhejiang. The enterprise has no written technical specifications and process flow. The whole formula production is based on experience. The amount of toluene in the ink is artificially controlled according to the weather conditions

"we are both perpetrators and victims." Lin said that in recent days, he consulted everywhere about the reasons for benzene solvents exceeding the standard. Finally, he learned from the chemical raw material market and raw material suppliers that it may be due to the slow drying agent contained in toluene. Considering the dry climate in Northwest China, the raw material supplier added slow drying agent to the toluene diluent supplied to all plastic color printing merchants in Northwest China. In this case, only by prolonging the curing time can the solvent residue be guaranteed to be low. Many color printers do not know this situation and still operate according to the conventional curing time, so benzene solvents are difficult to volatilize completely, and there is likely to be residue in the packaging bag

in this regard, relevant people pointed out that although most of the toluene solvents mixed in the production of food packaging bags volatilize during ripening, there will still be a small amount of residues between the composite films. In the closed packaging space, the residual harmful substances will slowly penetrate into the food from the membrane surface, which may cause the food to deteriorate and taste, and endanger human health

packaging quality can not be ignored

for a long time, the supervision and inspection of food packaging in many places are limited to size, appearance, strength and physical and mechanical properties, and rarely involves the hygienic index solvent residue. The first special inspection of food packaging production enterprises by Lanzhou Municipal Bureau of quality and technology supervision not only revealed the hidden worries of packaging product quality, but also sounded an alarm for market supervision and the development of packaging industry, which has exceeded the significance of the event itself

among the several packaging enterprises investigated, almost no equipment has been used to detect the purchased raw materials, and no color printer has suspected that the content of benzene substances will exceed the standard, let alone wanted to detect the content of benzene substances in the past, and the enterprise itself has no ability to detect. However, there is no authoritative statement on the impact of excessive residue on the food in the bag

on June 10, the head of the supervision department of Qinghai Provincial Bureau of quality and Technical Supervision said that the packaging bags of Valley milk powder had been recovered in full. After testing, the sweet milk powder of the enterprise failed to meet the three indicators of protein, fat and mold. The unqualified milk powder quality has nothing to do with the unqualified packaging bag quality. Lin, general manager of Lanzhou Senjie Packaging Co., Ltd., said, "from the south to the northwest, this industry has been working for more than ten years. I don't know the requirements of national standards for benzene content at all, and I have never encountered similar problems." From this point of view, the packaging industry is generally lack of effective management, and there is still a lot of room for survival in the food packaging material market that does not meet the requirements of national standards

it is understood that Qinghai Minhe River Valley dairy products Co., Ltd. has a design annual output of 20000 tons, and began production in April this year after technical transformation. Bai, the person in charge, said nervously that he would never forget this lesson for a lifetime and would never pack a package without a benzene content test report in the future. Dingxi, a potato chip factory, also suffered a loss and learned a lesson. After encountering toxic packaging, it inquired several packaging production enterprises in the province. In addition to being helpless, it turned its attention to Beijing, Shanghai, Guangzhou and other places, and continued to look for partners who can produce food packaging films that can be used safely

according to the national standard gb/t issued on May 19, 1998, the total amount of solvent residues in composite membranes and bags is ≤ 10mg/m2, including benzene solvents ≤ 3.0mg/m2. So why is there such a provision? After contacting the drafting unit of this national standard, Wuxi Cathay Pacific Color Printing Co., Ltd., its main drafter said that it was for environmental protection considerations at that time that the limited value of solvent residue was proposed on the basis of drawing lessons from similar Japanese standards. However, at present, benzene substances are no longer allowed in packaging bags in Japanese standards, and they are also prohibited in European and American standards. At present, the adhesives of flexible packaging in Europe and America are gradually turning to water-based or solvent-free products, and alcohol soluble ink has also become an international development trend to replace toluene ink. In the United States and the European Union, the types of adhesives and inks used in food packaging are clearly stipulated in relevant laws, and all chemicals not mentioned in the regulations are prohibited. China's national standard gb/t was officially implemented on February 1st, 1999. Unfortunately, in this spot market, the on-demand procurement standard of steel mills can no longer fully adapt to the current new problems

people concerned strongly appealed that the food packaging industry urgently needs to implement a strict market access system, and the revision of food packaging standards is also urgent

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