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Refining surface and a blade segment for a refiner

  • US 20070084952A1
  • Filed: 10/06/2004
  • Published: 04/19/2007
  • Est. Priority Date: 10/06/2003
  • Status: Active Grant
First Claim
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1. A refining surface of a refining member adapted for use with a refiner for defibrating a lignocellulose-containing material, the refiner comprising at least two adjacently-disposed refining members arranged coaxially relative to each other along an axis, wherein at least one of the refining members is configured to rotate about a shaft arranged along the axis, and the at least two refining members are configured to receive the lignocellulose-containing material therebetween such that the material is defibrated by the respective refining surface of each refining member, the refining surface of the refining member comprising:

  • a plurality of first grooves, each first groove being defined between two adjacent first bar portions of the refining surface, and extending between opposing first and second radial edges of the refining surface; and

    a plurality of second grooves, each second groove being defined between two adjacent second bar portions of the refining surface forming each first bar portion, and extending between two adjacent first grooves, the first bar portions being wider than the second bar portions, and each second bar portion being between about 1 mm and about 3 mm wide.

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