Characteristics
Paper mills can be fully integrated mills or nonintegrated 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 the kraft process) commonly have associated odors; nonintegrated mills purchase wood pulp, usually in dry bales known as market pulp, and produce little, if any, odor.
The modern paper mill uses large amounts of energy, water, and wood pulp in a highly efficient and extremely complex series of processes, using modern and sophisticated controls technology to produce a sheet of paper that can be used in incredibly diverse ways. Modern paper machines are very large and can be 500 feet (~150 m) in length, produce a sheet 400 inches (~10 m) wide, and operate at speeds of more than 60 mph (100 km/h). The two main suppliers of paper machines are Metso and Voith.
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