| 摘要 |
For mechanical defibration of wood, the method comprises kneading wood and separating fibres from the wood by means of the contours of the defibration surface. A regular contour of the defibration surface and a correct speed of the surface in relation to the wood to be treated generate a regular cycle length for the defibration in such a way that a half of the cycle length corresponds to the relaxation time of the wood raw material under the defibration conditions. The defibration surface (1) is provided in the direction of motion (3) of the surface with a wave pattern in which the tops are located at regular intervals and which coincides with a wave pattern of sine wave type at least at the leading portions (4) in the direction of motion of the defibration surface, said portions conveying energy to the wood raw material.
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