The drainage plate, also known as the drainage coiled material, is made of high-density polyethylene (HDPE) as the raw material, and the plastic bottom plate is stamped into the convex points (or hollow cylindrical porous) of the conical protrusion or stiffener. In the modeling, the plastic plate is pressed out of the closed convex cylindrical shell by special process to form a concave convex membrane and shell, which is continuous, has three-dimensional space and a certain support height, and the compressive strength and overall flatness are greatly improved, The width is 1-3m and the length is 10-15m or more.
Main technical parameter