Mechanical pulping methods avoid many of the environmental impacts created by the Kraft pulping process. Several different mechanical pulping methods are commonly used today, but they all rely primarily on energy rather than chemicals to convert wo...
Approximately forty percent of the fiber in U.S. paper products is recycled, or secondary, fiber. Re-pulping fibers that have already been processed shortens them and weakens their bonding capacity, so secondary fiber is often mixed with virgin fib...