In life, we can't do without plastic packaging, so how to distinguish the safety of plastic packaging. Plastic mooncake holder The plastic tray of moon cake is divided into PP, PS, PVC plastic, etc. PVC is polyvinyl chloride. When the material contains oily food, the oil in the food is easy to dissolve small molecules in the plastic. Time to eat this moon cake is harmful to the human body, so PVC plastic is forbidden to be used as food packaging. However, some unscrupulous merchants sometimes make changes to PVC and deceive consumers. In order to make mooncakes look high, unscrupulous merchants have used gold and silver mooncakes to hold mooncakes. These brightly colored mooncake holders are made from recycled powder and gold powder and silver powder. The sources of these recycled plastics are complex, and some even come from medical waste, pesticide bottles, etc. The use of recycled plastics and mooncake holders made of gold and silver powder is prone to contain a large amount of toxic substances and heavy metals. Moreover, each layer of the packaging box must be glued with glue. The glue contains toxic toluene chemicals. Toluene invades the human body mainly through inhalation, ingestion, and absorption through the skin. Health hazards include irritating to the skin and mucous membranes, and the central nervous system. The system has an anesthetic effect. If a high concentration is inhaled in a short period of time, obvious irritation of the eyes and upper respiratory tract, conjunctival and pharyngeal congestion, dizziness, headache, nausea, vomiting, chest tightness, weakness of the limbs, gait, and confusion may occur. Severe cases may have convulsions, convulsions, and coma. Long-term exposure can cause chronic toxic symptoms such as neurasthenia syndrome, hepatomegaly, dry skin, chapped, and dermatitis. Colorful plastic trays are often dyed with industrial pigments, so the brighter the color of the plastic mooncake trays for mooncakes, the less secure it is. In addition, consumers can also hold the mooncakes against the light. If there are obvious impurities, black spots or uneven color may be recycled plastics. If they smell bad, they may also be unqualified products. Plastic packaged food At present, the type of plastic that can be heated by microwave ovens in the industry is polypropylene, which is the type of plastic with the identification code of 5. The polypropylene material can withstand temperatures up to 130 ° C, so it can be heated in a microwave oven for a short time. In addition to the polypropylene plastic code 5, the most common are the codes 1, 2, 3, 4, 6, and 7, but the plastic types of these codes are not very high temperature, and the code 6 is polystyrene. Plastics can only withstand temperatures below 100 °C. When heating the box, everyone usually does not remove the cling film wrapped around the box. However, the plastic wrap of PVC material may melt for a long time, and the plasticizer (ie, plasticizer) released at high temperature may be transferred to the food, causing harm to the human body. Therefore, even in the case of a package made of a polypropylene material of code 5, it is preferable to remove the outer wrap film when heated. Disposable plastic packaging With the increase of people's awareness of environmental protection and the development of fine-tuning habits, many people reuse disposable plastic packaging. However, experts suggest that these packaging materials should not be reused. It should be avoided to repeatedly use plastic utensils that are aging and easy to deteriorate. It is best not to reuse the beverage bottles many times, otherwise it will easily breed bacteria and have health hazards. For such plastic products that cannot be used repeatedly, it is good to classify the garbage. For example, although plastic bottles can be recycled, they are not used to hold drinks, but to make low-grade products that are not in direct contact with people. Consumers who prefer to use edible oil, honey, and medicated wine in plastic bottles must change this habit because plastic bottles contain these foods for a long time and may dissolve harmful substances, which is not good for health. Plastic packaging is one of the four materials in the packaging industry, and it is developing at a rate of 5% per year. The importance is naturally self-evident. Although plastic packaging is often questioned and blamed, many of its characteristics cannot be replaced by any other packaging material. Therefore, consumers must learn to avoid disadvantages, master the defects of the plastic packaging industry, add a barrier to their own safety, and be wise consumers. Garden Light,Solar Garden Wall Light,Outdoor Garden Lights,Garden Lamp Post NINGBO ZHENGUO INTELLINGENT LIGHTING CO.,LTD , https://www.nbzguolight.com
What is the safety performance of plastic packaging? How to distinguish