Method for producing microscale and/or nanoscale fiber material
AssigneeWeidmann Holding AG
InventorsStefan Truniger, Tobias Wolfinger
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for producing microscale and/or nanoscale fiber material. The method has at least the step of dispersing (5) dried pre-comminuted pump in a liquid. The method additionally has a step of finely comminuting (6) the pulp dispersed in the liquid such that a fine comminution mixture is produced which contains the liquid and the fiber material with the microscale and/or nanoscale fibril agglomerates.
Claims13
A method for producing microscale and/or nanoscale fiber material containing microscale and/or nanoscale fibril agglomerates, said method comprising at least the following method steps:
- mechanically shortening the length of pulp fibers on average by a multiple factor by pre-comminuting pulp in dry form comprising less than 15% moisture, without addition of liquid, in order that the average fiber length of the pulp comes to lie within the range of 0.025 mm-6 mm;
- dispersing the dry, mechanically pre-comminuted pulp in a liquid;
- and
- mechanically separating the pulp fibers dispersed in the liquid from one another by fine-comminution with a mineral material such that a fibrillated mixture is formed, which contains the liquid and also the fiber material containing microscale and/or nanoscale fibril agglomerates, and which is largely free of visible individual fibrils;
- wherein the average length of the microscale and/or nanoscale fibril agglomerates is within the range of 500 nm-600 μm.
Dependencies are inferred from the claim text.