Although we often use plastic bags in life, there are still many people who are not sure about the material of plastic bags. The following professional plastic bag manufacturer Tang Tai (http://www.tantara.cn) will explain to you how to distinguish the common plastic bag materials in life.
1. PE material: divided into high-pressure material (LDPE) and low-pressure material (HDPE).
The high-pressure material looks smoother, feels softer, and has better toughness. Many raw materials for handbags are made of high-pressure materials.
The low-pressure material has good tensile strength and high hardness, and is widely used in shopping malls and various procurement markets.
The easiest way to distinguish between high and low pressure, tearing by hand, producing white marks proves that it is low pressure, because low pressure is high density, so it will produce white marks, no white marks produce good tension is generally high pressure.
2. PP material: The material body is hard, but the transparency is relatively high and clear, the pulling force is not very good, and it is explosive. Most of them are used for gift packaging, as well as sales of finished clothing. The new clothes we buy are packed in plastic bags and have a double-sided adhesive seal. The plastic bags are usually po plastic bags. PP plastic bags are very transparent and feel very good. Slippery, fold it in half, there will be creases, there is no folding PE bag.
3. OPP material: The material is the most brittle, with the highest transparency, and insufficient tension, but the most explosive, and the easiest to decolorize the printing. If there is no gap, it is difficult to tear, but if there is a gap, you can tear it with no effort.
The above is the way to distinguish the common plastic bag materials we introduced to you. Have you learned?