Australia is most concerned about the migration of

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Australia pays attention to the migration of packaging materials to food

the migration of packaging materials to food refers to the continuous precipitation of substances in food packaging during use and into the food they come into contact with. At present, a variety of materials are used for food packaging. People are very concerned about whether these materials will enter the food from the packaging, and whether these migrated substances are harmful to consumers. Even if the migrated substances are harmless to human body, whether they may have an impact on the flavor of food that is not conducive to the soul of electromechanical components. Preventing food pollution caused by packaging is the constant goal of research and management in the industry


in Australia, in order to control the migration of substances in packaging materials, the "Australian National Food Law" has relevant provisions on the food sold: no one is allowed to sell anything mixed with secondary products or fake and inferior products; The product shall not contain substances different from the nature of food; The packaging of food shall not violate the provisions of relevant laws and regulations

the "Australian Food Standards Act" of the Supplementary Food Act stipulates the maximum migration amount of three special monomers, which are the basic substances of plastics. They are vinyl chloride, acrylonitrile and vinylidene chloride. They are of particular concern because they are known to be potentially toxic. Modern manufacturing methods can reduce the precipitation of plastic residual monomers and reduce the content of the precipitates in the contact food to an undetectable level

many packaging materials, including paper, fiberboard, glass, tinplate, aluminum and various plastics, contact with food when used. The relevant food regulations in Australia stipulate the requirements for compounds that use plastics in contact with other foods. However, these standards only contain six kinds of plastics and related additives used in food packaging, and only refer to the restrictions on whether they can be used in manufacturing rather than migration. The selection and control of these additives also need to refer to foreign laws

the United States and the European Union may have formulated or are preparing to formulate comprehensive relevant regulations to control the migration of food packaging materials. In some cases, the provisions of these regulations set the maximum limit for the migration of hazardous substances. In other cases, because the harm caused by migration is very small, only the names of additives are listed without specific limits. Some plastics contain a large number of additives, including antioxidants, stabilizers, antistatic agents and plasticizers. The addition of these substances can improve the functional properties of plastics

focus on packaging materials 4 Vibration migration caused by universal testing machine itself

some plastic additives are easier to migrate than other kinds of substances. In the past, the main concern was the concentration of plasticizers. Plasticizers can improve the elasticity of packaging materials. They are used in a wide range of plastics, but especially in polyvinyl chloride (PVC) films. Because people know that this plasticizer will precipitate when many PVC come into contact with food, the plastic industry has taken action to improve the types of contact films to reduce the possibility of plasticizer precipitation. So far, there is no evidence that plasticizers derived from food pose a threat to human health, but this unnecessary exposure to pollutants must be avoided. This is the requirement of the comprehensive international regulations that have been formulated at present

use of plastic containers and films for catering

as the precipitation of plasticizer tends to increase with the increase of temperature, the plastic specially designed for oven can be suitable for cooking. Compared with the possible problems of using plastics in traditional ovens, the safety problems of using plastics in microwave ovens are more complex. Many plastic containers are used satisfactorily in microwave ovens, but the precipitation of substances at high temperatures may not be tested. Those suitable for refrigerated and frozen food packaging, such as ice cream containers, are not suitable for high temperature

suggestions on using plastic in microwave ovens

only use safe microwave utensils; Although the words "microwave safety" are written on the packaging labels of some films, it is best to avoid direct contact with food when using them to cover or package heated meals. White kitchen cleaning absorbent paper can effectively prevent oil and water from splashing out during heating; The precipitation of harmful substances is more likely to occur in foods with high fat content. It is best to choose glass containers when heating these products; There is no standard to limit "microwave safety". If you have questions about the safety of a material, you can contact the manufacturer for more information

development of microwave packaging

pre cooked and frozen microwave foods have been prepared in most markets. Microwave treatment can be used for the simple package of this product, but it cannot be reused. Recently, foods with stable shelves and microwave processing have also appeared on supermarket shelves. This kind of product involves relatively complex packaging and is specially used for high temperature. If you operate according to the manufacturer's instructions, they are very safe and can withstand high temperatures

food packaging for refrigeration

under the condition of low temperature such as refrigeration, the migration of plastic substances into food may also occur, of course, the speed of this migration will be much lower than that at high temperature. Although there is no evidence that the amount of plasticizers migrating to products with high fat content, such as cheese, has reached the level of endangering people's health, if you want to avoid using plastic packaging with high plasticizers, you can choose products clearly marked with "polyethylene"

stains and odors

paper and wood materials can transmit stains or odors to food, and compared with them, plastics have stronger transmission ability. This pollution may be residual monomers such as styrene. If consumers taste the "plastic taste" in food, it is the culprit. At the same time, most food packaging is printed. If the production of food packaging materials is not carefully controlled, some ink components will cause unpleasant taste

people should remember that ordinary plastics cannot effectively block strong smells. This problem often occurs when food is stored in the refrigerator. The smell of food such as onions and garlic is easy to stain other food through plastic film

recycling recycled plastics and paper

at present, little research has been carried out on what chemical changes have occurred in the recycling of plastics and paper materials. The recycling of household packaging waste has been implemented in the packaging industry for many years. However, the recycling of packaging materials after consumer use, in addition to glass and metal, may have many problems, because their pollution sources come from many different aspects. If the use and treatment procedures of this material are not controlled, the packaged food will be polluted

the adoption of "coding code for packaging industry" makes the recycling of packaging materials safer and can be used for any form of packaging. At the same time, relevant research is also needed in this field to identify harmful components and provide methods to solve them. Obviously, some recycled packaging materials cannot be used for food packaging

the Australian National Food Administration is paying attention to the key technology developed by the Commonwealth Scientific and industrial research organization of Australia to break through the composite body structure and the consultation between some packaging enterprises on the application of recycled packaging materials in food packaging and other related issues. The government plays a role in deciding when and how to use recycled packaging materials through relevant food regulations. Consumers should know that recycled materials are second-hand. If the products are packed with recycled packaging materials, they should be clearly marked on the packaging, especially imported packaging materials and food packaged with imported packaging materials. The public should be aware of the potential problems, especially since the EU seems to have begun to export used packaging materials to developing countries after the implementation of the bill on reducing land encroachment in Europe

in short, although many substances may migrate from packaging to food, relatively speaking, there are few related food safety accidents. This is because the packaging industry has understood the possible problems, and has continuously improved and monitored the selection of packaging materials and manufacturing processes at the 2017 China International Aluminum Industry Exhibition

source: China Food News

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