Poor tensile strength of high-strength corrugated paper

The tensile strength of high-strength corrugated paper is not good, generally can be improved through the following ways:
1. Strengthen the choice of raw materials, especially strengthen the manual paper selection. Choose good quality waste paper raw materials, such as importing OCC or increase the proportion of imported OCC when raw materials are selected; or add a certain proportion of chemical pulp. However, most manufacturers use home-made products. This is a major factor that directly affects the tensile strength of corrugated paper.
2. Some reinforcing or dry strength agents are used in the papermaking process.
3. In the process, screening and purification are enhanced to remove as much as possible the impurities in the waste paper, especially the crushed foam blocks.
4. It is best to use a long net when paper is formed into a web. If a circular net is used, it is also necessary to pay attention to the structure of the rotary net former and ensure that the paper has a good level of uniformity.
5. When beating, it is necessary to pay attention to purifying the waste paper and carry out adequate mitigation without cutting off.