Method and apparatus for defibrillating cellulose fibers
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United States of America Patent
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Sep 16, 2014
Grant Date -
Jul 26, 2012
app pub date -
Jun 23, 2010
filing date -
Jun 24, 2009
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Abstract
The current invention is directed to a method and apparatus for defibrillating cellulose fibers achieved through single or multiple passes of raw or pre-processed cellulose fiber slurry with a preferred solid material consistency range of 35% to 55% through twin-screw fiber processing machines. During this processing operation fiber slurries are optionally further enhanced with additional fiber and mineral additives to optimize performance of the material for specific end purposes. The hyper defibrillated fiber slurry produced can be defined as one reaching a Schopper-Riegler (SR) level between 75 SR and 85 SR and/or producing a pressed, dried board with a density of preferably at least 850 kg/m3.
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