That material is called tea filter paper. Of course, there are several kinds of tea filter paper. Different densities have different degrees of high temperature resistance or boiling resistance, depending on the material you want to package. In addition, our company has a packaging machine that can package this material. I am Tianjin Hantun Packaging Food Machinery Factory, and the telephone number is 022-26983856. You can contact me directly, and the details decide everything.