Plastic bags are relatively common in our lives and provide more convenient use, especially in supermarkets and major commercial markets. Judging from the plastic products currently on the market, they are generally made of polyethylene film. In addition, there is a kind of polyvinyl chloride. It is necessary to understand some basic distinguishing knowledge when using in life. Here, the plastic bag manufacturers will briefly introduce the basic skills of using differentiation in daily life.
Plastic bag manufacturers point out that the classification of plastic bags is mainly polyethylene and polyvinyl chloride. When distinguishing, you can pay attention to the characteristics of the two substances.
Polyethylene film is non-toxic, showing a milky white translucent state, which will be more obvious if the base layers are superimposed. Polyethylene is relatively lubricated, and the surface looks like a wax layer. If you shake the bag, you can still hear a crisp sound. This material will appear yellow when exposed to fire, creating a smell of candles after burning.
Polyvinyl chloride is the most popular synthetic material. If no pigment is added, it is usually transparent. If you touch it by hand, you will feel the matte surface. Generally, if the bag is shaken, the sound of this material is relatively low, and it is generally not easy to burn, even if there is a short flame, it will appear green. The distinction between these two materials is relatively simple, and they can be quickly identified through these.
The use of plastic bags is now declining. For better environmental protection, plastic bags manufacturers are encouraged to use other materials instead, but even so, as a choice for us to facilitate life, they still have a very important position.