Safety and detection methods of plastic packaging bags

January 7, 2023

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Some food packages are very strong and have anti-counterfeiting marks, which are used to protect the interests of businesses from loss. There can be laser marking, special color, SMS authentication and other labels on the packaging bag. In addition, in order to prevent theft, the retailer puts an electronic monitoring label on the food packaging bag, and waits for the consumer to take it to the outlet of the store for degaussing. A single package helps to get a precise picture of the whole situation. For example, salt can be packed into the package to know the inventory. It is also convenient for calculating sales, such as dairy companies delivering and recycling milk bottles instead of having consumers fill them themselves. The quality of food packaging bags in the flexible packaging industry, especially the hygienic quality, is directly related to the safety of the packaged food, so it is necessary to ensure that the raw materials and additives used meet the quality requirements of the management system. It is necessary to improve the industry and national standards for packaging film bags and strictly implement them, strengthen the inspection and supervision of food packaging, prevent unqualified food packaging from entering the market, and strengthen management to ensure the healthy development of the flexible packaging industry.The inspection items of food packaging single-film bags are mainly divided into the following categories: the appearance must not have defects such as air bubbles, perforations, water marks, violent tendons, poor plasticization, and fish-eye stiffness that are harmful to use. Specifications, width, length, and thickness deviations should all be within the specified range. Physical and mechanical properties include tensile strength and elongation at break, which reflect the ability of the product to be stretched during use. If this item is unqualified, the food packaging bag is prone to cracking and damage during use.Once upon a time, the quietly rising plastic packaging bags replaced the”food basket”,”Budouzi”But we see that while it brings convenience to people, there are also many hidden dangers. In recent years, the safety issues of food packaging materials have become increasingly prominent. Through observation, we can see that early stall owners pack fried dough sticks, rice porridge, steamed buns and other food in white plastic bags without any signs, as do stir-fried vegetables and cooked food for takeaway from restaurants, hotels, supermarkets, etc.; vegetable markets, The packaging bags used by the fruit stall owners are almost all colored plastic bags; while the plastic bags used by the aquatic industry owners are almost all black, and the strange smell from the plastic bags can be smelled from a distance.Experts pointed out that food, especially cooked food, is often easy to deteriorate after being packaged in inferior plastic bags. After people eat such spoiled food, it is easy to cause food poisoning symptoms such as vomiting and diarrhea. In addition, the plastic itself will release harmful gas, and the gas concentration will increase with the increase of sealing time and temperature, causing the food in the bag to be polluted to varying degrees. The plastic wrap that has been hyped a while ago is suspected of being toxic and carcinogenic. The problem mainly comes frompvcThat is, the residual carcinogenic vinyl chloride monomer in polyvinyl chloride resin exceeds the national standard, or uses processing aids that are prohibited for food packaging materials. It can be seen that blindly using plastic bags to package food is harmful to country is in1990The “Measures for the Hygienic Management of Food Plastic Products and Raw Materials” issued in 2011 stipulates that no recycled plastics shall be used in the processing of plastic tableware, containers, and food packaging materials; plastic products for food must be printed on obvious places”for food”typeface. However, some of the plastic bags currently on the market are”three no”Products, many of which are made of recycled plastics, this kind of plastic bags directly contact with food will endanger human health, but because of their low price, they are still on the market”popular”.It is understood that the “General Rules for the Labeling of Prepackaged Foods”, one of the national standards for food packaging labels that the country has recently enforcedGB7718—2004》Implement a mandatory product certification management system for food packaging products including lunch boxes, plastic bags, beverage packaging, etc., namely3CCertification, all food packaging materials must be certified before they can be put on the market to ensure the safety of food consumption.Here, the quality supervision department reminds consumers: when choosing food packaging bags, you should see clearly whether there are any”for food”font Chinese logo and3CCertification marks, etc., otherwise it cannot be used for packaging food. Consumers should master the following three simple methods of identifying food plastic packaging bags: First, the color of food plastic packaging bags should be white, and colored ones cannot be used to pack directly imported food, and special attention should be paid to those with peculiar smell; Second, plastic bags for food are of good quality, smooth to the touch, loud when shaken by hand, and can float on the water surface when placed in water; third, plastic bags for food are flammable when exposed to open flames, and have the smell of burning wax or petroleum, without pungent odor. It has a spicy taste and can continue to burn after leaving the fire.

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