Method and apparatus for measuring fibre flexibility

Details Method and apparatus for measuring fibre flexibility Method and apparatus for measuring fibre flexibility

G - Physics

01

N

G01N 15/00 (2006.01) G01N 15/14 (2006.01) G01N 33/34 (2006.01) G01N 11/00 (2006.01)

Patent

CA 2069508

A method for measuring the flexibility of fibres, particularly cellulose fibres, in a flowing suspension. The fibre form of a large number of fibres is registered at two different pictures of suspension flow. A predefined fibre form is calculated for each flow picture, and a relationship; for example the quotient between two measurements of mean fibre form is determined and utilized to define fibre flexibility. The invention also relates to an arrangement for carrying out the inventive method; wherein the arrangement includes a flow-through container (20) through which the suspension flows, a transparent window (26) mounted in the container wall, a CCD-type camera (30) which functions to photograph fibres passing the window, a picture analysis unit (34) coupled to the camera (30), and a data processing unit (36) for processing information obtained from the picture analysis unit (34).

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