The more colorful the food plastic bags, the more dangerous

[Chinese Packaging Network News] At present, people have always worried about plastic food packaging in one way or another, and some people think that plastic is "toxic." But industry experts believe that plastic food packaging can be used with confidence, but do not use colored plastic bags for food.

According to reports, the plastics currently used for packaging foods such as polyethylene, polypropylene, polyester, polystyrene, etc., are hygienic and qualified for food packaging. However, consumers can not distinguish between food and non-food plastic bags, so a large number of unqualified plastic bags are used for food packaging, which seriously endangers people's health.

Relevant experts have particularly reminded that when using plastic bags to package foods such as cooked foods and snacks, it is best not to use colored plastic bags. Due to the strong permeability and volatility of pigments used for dyeing plastic bags, it can easily seep when exposed to oil and when exposed to heat. It is assumed that organic dyes, which also contain aromatic hydrocarbons, have an impact on health. In addition, many colored plastic bags are made of recycled plastics. Because there are many impurities in recycled plastics, manufacturers have to add pigments to cover them. However, some plastic bags made from recycled plastics are also white.

Experts also pointed out that there is currently no effective way to distinguish plastic food bags, but one thing is certain that plastic bags produced by informal manufacturers and sold in street stalls should never be used for food packaging. In addition, plastic bags assume unusual smells and cannot be used to hold food.

Although plastic food packaging bags are safe, they must also pay attention to the methods in use. Do not use high temperature foods in plastic bags for a long time. In daily life, people often see hot-fried fried cakes, fried dough sticks, etc. in plastic bags. If they are eaten within a short period of time, there is not much harm, but if the food is kept in the bag for a long time, it will make Some of the plastic material leaks and affects health. Microwave heating food, it is best to use microwave oven special plastic bags and special containers. Refrigerator and frozen foods in the refrigerator use plastic wrap instead of ordinary plastic bags. The extraordinary process and raw materials of cling film have good air permeability and preservation performance. However, if the ordinary plastic bag is used for a long time, it will deteriorate the quality and rot of the food and it will not achieve the purpose of preservation.

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