Paper mills can be fully integrated mills or non-integrated mills. Integrated mills consist of a pulp mill and a paper mill on the same site. Such mills receive logs or wood chips and produce paper. It is a common misconception that paper mills are sources of odors. Pulp mills and the pulping section of integrated mills (particularly if using theÂ kraft process) commonly have associated odors; non-integrated mills purchase wood pulp, usually in dry bales known asÂ market pulp, and produce little, if any, odor.
The modern paper mill uses large amounts ofÂ energy,Â water, andÂ wood pulpÂ in a highly efficient and extremely complex series of processes, using modern and sophisticated controlsÂ technologyÂ to produce a sheet of paper that can be used in incredibly diverse ways. Modern paper machines are very large and can be 500Â feet (~150Â m) in length, produce a sheet 400Â inches (~10Â m) wide, and operate at speeds of more than 60Â mph (100Â km/h).