Definitions for "Sulphite pulp"
Chemical pulp produced by cooking woodchips in a solution of calcium-, sodium- or magnesium-sulphite.
Paper pulp from wood chips and pressure-cooked in a solution of caustic soda and sodium sulphide. Also known as kraft. Sulphite pulp is produced from the wood of coniferous trees. Wood chips are cooked in calcium bisulphate or sodium sulphite, and bleached, producing fairly long strong fibres. Since the end of the 1860's until recent years, it has been the most widely used pulp in America. In fact, the term 'sulphite' has become generic and is still accurately used to describe any paper made from wood in distinction from papers made from cotton or other fibres. Sulphite pulp is available in a range of grades up to pure alpha cellulose.
Paper pulp made from wood chips and pressure-cooked in a solution of bisulphite of lime.