The hottest plastic packaging has hidden secrets t

Plastic packaging has hidden secrets to ensure safety

with the Mid Autumn Festival approaching, various gifts, mainly moon cakes, occupy major shopping malls. With the enhancement of environmental protection awareness and the improvement of health requirements, people pay more and more attention to the packaging of food and gifts. As one of the packaging materials, plastic is widely used in the food and beverage industry. Therefore, all sectors of society pay unprecedented attention to the safety of plastic packaging, and the electronic universal experimental machine produced by our company

in the face of a wide range of food packaging and gifts, but the current domestic implementation is small, how should we choose to ensure safety to the greatest extent? In life, how to choose and use plastic utensils? Huicong plastic will give you some tips

plastic moon cake holder taboo bright

the plastic holder packaging of moon cakes is divided into PP, PS, PVC plastic, etc. PVC is PVC. When this material is used to contain greasy food, the oil in the food is easy to dissolve the small molecules in the plastic. If you eat this kind of moon cake for a long time, it will be harmful to human body. Therefore, PVC plastic is forbidden to be used as food packaging. However, some unscrupulous businesses sometimes change the face of PVC and deceive consumers. In order to make the moon cakes look high-grade, illegal businesses have used gold and silver moon cake holders to hold the moon cakes. Some of these brightly colored moon cake holders are made of recycled plastic with gold and silver powder. The sources of these recycled plastics are complex, and some even come from medical waste, pesticide bottles, etc. moon cake holders made of recycled plastics and gold and silver powder are prone to contain a lot of toxic substances and heavy metals

and each layer of the packing box should be adhered with glue, which contains toxic toluene chemicals Toluene invades human body mainly through inhalation, ingestion and skin absorption. Health hazards include irritation to skin and mucous membrane and anesthetic effect on central nervous system. If a higher concentration is inhaled in a short time, obvious irritation symptoms of eyes and upper respiratory tract may occur, conjunctiva, plastic composites and high-performance engineering plastics have been widely used by foreign automobile brands, as well as pharyngeal congestion, dizziness, headache, nausea, vomiting, chest tightness, weakness of four limbs, staggering gait and blurred consciousness. Severe cases may have restlessness, convulsion and coma. Chronic poisoning symptoms such as neurasthenia syndrome, hepatomegaly, dry skin, chapped skin and dermatitis may occur after long-term exposure. The brightly colored plastic moon cake holder is easy to design, and the plate is often dyed with industrial pigments. Therefore, the brighter the color of the plastic moon cake holder is, the less safe it is

in addition, consumers can hold the moon cake against the light. If there are obvious impurities, black spots or uneven color, it may be recycled plastic, and it may also be unqualified products if it smells peculiar

food with plastic packaging should not be heated directly

at present, the plastic type recognized by the industry that can be heated in a microwave oven is polypropylene, that is, the plastic type with identification code of 5. Polypropylene material can withstand 130 ℃ high temperature, so it can be heated in a microwave oven for a short time. In addition to polypropylene plastic with code 5, the most common codes are 1, 2, 3, 4, 6 and 7, but the plastic types of these codes are not very high-temperature resistant, and polystyrene plastic with code 6 can only withstand temperatures below 100 ℃

when heating a box of rice, people usually don't remove the fresh-keeping film wrapped outside the box. However, the PVC film may melt after heating for a long time, and the plasticizer (i.e. plasticizer) released under high temperature will be transferred to food, causing harm to human body. Therefore, even if the packaging box is made of polypropylene material with code 5, it is best to remove the fresh-keeping film outside when heating

disposable plastic packaging should not be reused

with the enhancement of people's awareness of environmental protection and the formation of the habit of careful calculation, many people reuse disposable plastic packaging. However, experts suggest that these packaging products should not be reused, and the repeated use of aging and perishable plastic appliances should be avoided as far as possible. It is best not to reuse beverage bottles for many times, otherwise it is easy to breed bacteria and have potential health hazards. For this kind of plastic products that cannot be used repeatedly, it is OK to do a good job of garbage classification and treatment. For example, although plastic bottles can be recycled, they are not used to hold drinks, but to make low-grade goods that are not in direct contact with people. Consumers who like to use plastic bottles of edible oil, honey and sparkling wine must get rid of this habit, because plastic bottles containing these foods for a long time may dissolve harmful substances, which is harmful to health

attention should also be paid to the use of metal containers

after plastic packaging was questioned, some residents used metal containers to store food. However, experts warned that citizens should also pay attention to the safety of metal products

it is understood that metal packaging containers mainly include stainless steel tableware containers and aluminum tableware containers. Stainless steel is made of iron chromium alloy mixed with some other trace elements. The main food safety problem of aluminum products lies in the neutralization of impurities in cast aluminum and recycled aluminum. Metal containers contain foods with high acidity, alkalinity and salinity, which are easy to dissolve harmful metal substances

conclusion: plastic packaging is one of the four major materials in the packaging industry, and it is developing at a rate of 5% every year. Its importance is self-evident. Although plastic packaging is often questioned and criticized, many of its characteristics cannot be replaced by any other packaging materials. Therefore, consumers should learn to seek advantages and avoid disadvantages, master the know-how of the plastic packaging industry, add a barrier to their safety, and be wise consumers