How to choose express bags
First of all, it depends on its thickness. The thickness of the express bag is different, and the price is also different. In fact, the detailed thickness can be set according to the needs. If it is too thin, it will affect the use.
The second is to see whether the express bag is made of recycled materials or raw materials. The recycled materials usually have a pungent taste, and the color is sometimes unstable. Since they are all recycled raw materials, the color is based on the color of the recycled materials and whether the added additives are linked. But the price is relatively cheap; express bags made of raw materials have no pungent taste, and the color can be controlled, but the price is relatively high, usually double that of recycled materials. And it will go up and down according to changes in oil prices.
In addition, it depends on the processing method of the express bag. The express bag is usually made of particles, which are dissolved at high temperature by the equipment, blown by the film blowing machine, and then sealed, and finally made into express bags. There are high-pressure blown film and non-high-pressure blown film technologies. Usually, the surface of the high-pressure blown film bag is bright, and the hardness and tensile strength are relatively good. In particular, the two ends are sealed to see if the stitching is strong.
Finally, the question is whether the courier bag is a damaged adhesive tape. The damaged adhesive tape has a relatively high viscosity. Usually, it is difficult to open it again after it is glued, unless the bag is damaged. It also depends on the details, such as the width of the attached glue.
