Sanitary-hygienic paper ( sanitary-hygienic paper (GBS) or tissue paper ) is a special type of thin crepe paper having a low mass of square meter (usually from 13 to 40 g / m2) and intended for processing into sanitary-hygienic paper products: toilet paper , paper towels, napkins, disposable paper medical products, etc. Tissue is made on special paper machines (PM) from both primary (bleached softwood or hardwood pulp ) and secondary fiber ( waste paper ).