High yield fiber sheets

摘要: Wet-laid sheets of softwood high yield fibers in combination with hardwood fibers. The sheets, which are strong enough to be handled by commercial equipment, formed on conventional papermaking machines using a furnish comprising major proportion admixture minor specially prepared procedure treating relatively levels chemicals under relative stringent conditions and defibrating the treated power input. Airfelts made from these exhibit low wet densities. Processes for making airfelts also provided.