A covering web formed by a compound web material of coarse filaments and fine microfibres constituting a mixture without discrete phase boundaries between the individual components. The compound web material is produced in an integrated formation process on the same layering device of a web forming installation. As a novel feature, the compound web material has strip-like regions not forming a mixture but consisting only of coarse filaments or containing only a small proportion of fine microfibres. These strips are bordered on either side by other strips containing a mixture of both components - coarse filaments and fine microfibres.
