19/02/2018
Wood can be turned to pulp in a couple of different ways. Mechanical pulping involves using machines to grind wood chips into pulp.
The resulting pulp retains most of its lignin, though. The short fibers created by grinding leads to weak paper most suitable for newsprint, phone books, or other types of low-strength papers.
The more commonly used method is chemical pulping, also known as “kraft." Chemicals are used to separate lignin from the cellulose fibers, leaving a pulp mixture that can make stronger papers.
Wood can be turned to pulp in a couple of different ways. Mechanical pulping involves using machines to grind wood chips into pulp.
The resulting pulp retains most of its lignin, though. The short fibers created by grinding leads to weak paper most suitable for newsprint, phone books, or other types of low-strength papers.
The more commonly used method is chemical pulping, also known as “kraft." Chemicals are used to separate lignin from the cellulose fibers, leaving a pulp mixture that can make stronger papers.