Method and apparatus for manufacturing microfibrillated cellulose fiber
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United States of America Patent
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Jun 3, 2008
Grant Date -
Sep 8, 2005
app pub date -
Jul 15, 2003
filing date -
Jul 18, 2002
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Abstract
A method for producing a microfibrillated cellulose, which comprises subjecting a slurry containing a pulp having a solids concentration of 1 to 6 wt % to the treatment with a disc refiner repeatedly ten times or more, to thereby prepare a microfibrillated cellulose having a number average fiber length or 0.2 mm or less and an amount of water hold of 10 mL/g or more, the amount representing the volume of water capable of being held by a unit weight of the cellulose fiber. The method allows the production of a microfibrillated cellulose having high quality with stability and with good efficiency.
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