Back to results
US 8,961,739 B2Granted
Method and apparatus for the splitting of cellulosic fibers, methods for the treatment of fibrous pulps for a papermaking process, methods for paper drying and paper products with split fibers
OwnerReijo K. Salmineninventor
Life of this patent
Estimating the term…
Abstract
A method of splitting hollow cellulosic fibers employs the steps of wetting the fibers, feeding the wet fibers to a gaseous flow, and conducting the gaseous flow carrying the fibers through a venturi tube, the pressure drop in the venturi tube throat bringing a pressure difference between liquid inside the fibers and gas outside of the fibers and causing the fibers to split in their longitudinal direction, to open the lumen inside the fibers.
Claims25
A method of splitting hollow cellulosic fibers in a system for splitting the fibers, the method comprising the steps of:
- wetting the fibers;
- feeding the wet fibers to a gaseous flow;
- conducting the gaseous flow carrying the fibers surrounded by the gas through a throat of a venturi tube of the system;
- producing a drop in gaseous pressure in the throat of the venturi tube in order to cause a difference between a pressure inside of the fibers and a pressure of the gas outside of the fibers, and
- causing the fibers to split in a longitudinal direction, and to open a lumen inside the fibers.
2 more elements
Dependencies are inferred from the claim text.