Control of azodicarbonamide foaming agent in metal bottle caps

Food is food to safety first. With the continuous progress of economic and social development, people are getting better and better at eating and drinking, as well as food safety and food safety. As a metal bottle cap for food packaging materials, foaming agent materials commonly used in PVC gaskets have been strictly monitored in the European Union. However, in China, the monitoring of foaming agents for caps is still lagging behind. The use of various foaming agents is still confusing and lacks supervision. On the one hand, the healthy development of the food industry is restricted and the market risk of export foods is greatly increased. On the other hand, the illegal use of poisonous and harmful foaming agents in packaging materials will seriously threaten the health of consumers.

Azodicarbonamide (ADC), English name Azodicarbonamid (ADC), commonly known as AC foaming agent or ADC foaming agent, is widely used in polyvinyl chloride, polyethylene, polystyrene, ethylene-vinyl acetate copolymer, ABS resin and various During rubber processing, it has high foaming efficiency, short decomposition time, low production cost, no combustion, no odor, no pollution, no discoloration, fine particles, easy decomposition, and can be used under normal pressure and pressure. Such characteristics, widely used in footwear, leather, wallpaper, packaging and other industries, is the most commonly used foaming agent in the domestic food packaging industry, the lid manufacturing industry in recent years. However, in recent years, a large number of scientific studies in the European Union have shown that when azodicarbonamide is decomposed by heat, it produces extremely minor by-product semicarbazide (SEM), and its content is usually in parts per billion (ie several ppb content). . In 2003, the European Food Safety Authority (EFSA) issued a report on SEM's weak carcinogenicity and weak in vitro reproductive toxicity in laboratory animals. According to this, the European Union issued Directive 2004/1/EC in 2004, stipulated in August 2005. On the 2nd, azodicarbonamide is prohibited from being used as a foaming agent for food contact materials.

China issued GB 9685-2008 “Hygienic Standards for the Use of Additives for Food Containers and Packaging Materials” in September 2008, which clearly specifies the list of additive materials that can be used in food containers and packaging materials. Azodicarbonamide is prohibited from being used in foods. Packaging Materials. However, due to the lack of corresponding standard testing methods and limitations of many factors such as detection technology, precision of testing equipment, and detection cost, many authoritative testing organizations in China are unable to carry out this highly demanding testing business. Therefore, domestic food packaging materials The detection and control of the azodicarbonamide foaming agent has not caused the attention of the relevant departments, resulting in the food safety of food packaging foaming materials flowing into the form of regulatory loopholes. It is for this reason that there is still the phenomenon that the azodicarbonamide foaming agent is illegally used in the production of domestic food packaging materials. Therefore, there is a long way to go for the food safety risk control of packaging materials and metal caps in China, and there are still arduous ones. Way to go.

In summary, the use of foaming agents in metal bottle cap gaskets has great food safety risks. It is impossible to guarantee the safety of food packaging materials by relying solely on the ethics and professional conscience of the packaging industry. There is an urgent need for national foods. The health legislature shall keep pace with the times and formulate the control standards and test method standards for azodicarbonamide foaming agents in food packaging materials in China as soon as possible. Only when the law is enforced by the people and the manufacturer takes the customer as God, the food packaging materials and metal cap industry can be standardized, benign, and healthy. Only when the “azodicarbonamide” is illegally used in food contact materials can it be fundamentally put an end to.