What are the misunderstandings of packaging?

Since the birth of plastic packaging bags, cooking bag manufacturers have been loved by people for their lightweight, cheap, high strength and other characteristics. People have been used to packing things in plastic bags. There are many kinds of plastic packaging bags on the market, but there are countless kinds in terms of color. What's good? Do we really choose plastic bags? Although we can almost use plastic packaging bags every day, we often go into the wrong way about the choice of plastic packaging bags.

（1） The thicker and stronger the plastic packaging bag, the better. We often see all kinds of plastic packaging bags in our life, so strong packaging bags must be good. Actually, this is not the case. There are strict standards for plastic bags. Especially for plastic bags used for food packaging, the quality of these plastic bags can only be guaranteed if they are produced by regular manufacturers and approved by relevant departments.

Plastic bags for food must be marked with the words "for food". You can see whether the plastic is clean by looking at the light. Qualified plastic bags are clean and free of impurities, while inferior plastic bags will see dirty spots and impurities. The thickness of one side of the plastic bag must be more than 0.025mm. If the thickness is not reached, the production and use of the plastic bag is prohibited by the state.

（2） Plastic packaging is colorful. How beautiful it is to choose colorful packaging. Although there are many kinds of colors in plastic packaging bags, we must be careful when selecting them. If the plastic packaging used to contain food items is considered from the color alone, we must select the simple color, so at least it has less additives. Many dark plastic packaging bags are often produced with recycled waste materials, and these plastic bags cannot directly contact with food.

（3） Reuse of plastic packaging bags. Many families have the habit of storing waste plastic bags. In fact, it is OK to store waste plastic bags as long as you pay attention to cleanliness and use of waste plastic bags, but do not use waste plastic bags to contact food and skin, which will cause chronic damage to our health.