Buffer packaging materials for logistics express industry - kraft paper bubble bag

Kraft paper bubble bags are introduced as follows. The three mainstream kraft paper bubble bags in China are white, yellow and natural colors. In addition, there are American Kraft paper and Russian Kraft paper. The difference is the difference between domestic kraft paper and imported paper. One is the difference in the color of kraft paper, and the other is a slight difference in composition. For domestic customers, white, natural color and yellow are commonly used colors. Generally speaking, for foreign enterprises, North American customers may prefer the color of their own American linerboard, and they will specially require that the color of kraft paper must be close to American linerboard color. In addition, when making kraft paper bubble bags, the kraft paper must be coated with a thin layer of PE film. The PE film acts like a linker, making the kraft paper stand together with the bubbles under the hot roller of the machine.
In terms of bubbles, generally, a good effect will be achieved when the weight of bubbles is 50-55G/M2. If the weight of bubbles is too light, bubbles are easy to break when making kraft paper bubble bags; If the weight is too high, the adhesion between bubbles and kraft paper is not very high during the process of making kraft paper bubble bag, which will lead to bubble delamination. These are the conclusions drawn after practical experience.