Method and apparatus for determining the fiber orientation of paper
Here are disclosed method and apparatus for rapidly and accurately determining fiber orientation of paper being in a standstill or moving in a paper machine and useful for grade study and quality control of the paper. The projector means projects an unpolarized light beam perpendicularly to a surfac...
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| creator | FUKUOKA, KAZUHIKO HATANO, AKIO INADOME, TAKEJI ABE, YUJI |
| description | Here are disclosed method and apparatus for rapidly and accurately determining fiber orientation of paper being in a standstill or moving in a paper machine and useful for grade study and quality control of the paper. The projector means projects an unpolarized light beam perpendicularly to a surface of the paper to be tested, then a light beam reflected by the paper surface is caught by eight or more light receiving means distributed on a circumference of circle defined, on the incident side of the unpolarized light beam, in a plane extending in parallel to the paper surface around a point at which the above-mentioned parallel plane intersects an axis of the incident light beam, and a light information signals output from these light receiving means are subjected to a predetermined arithmetic processing to obtain the fiber orientation characteristics such as fiber orientation index value and fiber orientation angle. |
| format | Patent |
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| subjects | FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LAUNDERING MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS METHODS OF PRODUCING PAPER THEREON PAPER-MAKING PAPER-MAKING MACHINES PHYSICS PRODUCTION OF CELLULOSE TESTING TEXTILES TREATMENT OF TEXTILES OR THE LIKE |
| title | Method and apparatus for determining the fiber orientation of paper |
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