Plastic bags can be seen everywhere in life. The plastic we usually use is not a pure substance, it is formulated from many materials. Among them, high molecular polymers (or synthetic resins) are the main components of plastics. In addition, in order to improve the performance of plastics, various auxiliary materials such as fillers, plasticizers, lubricants, stabilizers, and colorants must be added to the polymers. Agents, etc., in order to become a plastic with good performance. So how can we distinguish the quality of plastic bags under the background of such a large amount of plastic bags?

First of all, strictly speaking, the standards and requirements for custom-made shopping bags will be reflected in the printing of the bags. At this time, we must learn to observe plastic bags. In particular, attention must be paid to plastic bags used to directly hold food in supermarkets. Such bags must be printed with food logos. In addition, you have to smell the plastic bags for any peculiar smell. Some plastic bags are reprocessed from waste materials. Such plastic bags will have a pungent smell that makes them unusable at all.

Secondly, it is also very important to observe the color of the shopping bag. Usually, the custom-made shopping bags in supermarkets are nothing more than milky white or transparent in color, with delicate texture. The colorful vest bags that are common in vegetable markets are recycled and reprocessed from waste plastics, they cannot be used to hold food, and they can only be used once. If this kind of plastic bag is used to pack food, it will cause secondary pollution and produce certain toxic substances, which will endanger our health.

Besides the thickness of plastic bags, regular supermarket shopping bags are relatively thick and can be recycled, while generally inferior plastic bags usually have other magazines that are not strong enough to break easily and not durable. In terms of thickness, it is easy to identify, because the two bags feel very different.

Whether it is a large shopping mall or a small convenience store, custom-made shopping bags must choose regular manufacturers and use qualified materials, so that the products can be guaranteed. In addition, although plastic bags have brought great convenience to our lives, we must develop a certain awareness of environmental protection in our daily lives. On the one hand, it is to protect the environment, and on the other hand, it is also for our own health.