plastic sprocket wheel with a synthetic material and manufacturing process

gearwheel of synthetic material, in particular worm gear with teeth (8, 9) arranged next to each other in the circumferential direction, wherein the surface (14) of at least one of the teeth (8, 9) is structured such so as to form a deposit of fat, wherein the depth-averaged roughness (Rz) of the surface (14) is between about 1, 5 .mu.m and about 15 .mu.m, preferably between about 5 microns and about 10 microns.