| TECHNOLOGY |
Measures paper flexibility when paper góes through production line at speeds of up to 100 km/hour. As mnechanical contact is avoided, the system avoids damage to paper & allows examination of humidity, tension & weight. Sensor measures flexibility in real time, at process beginning, without touching the paper – which is very important, since at a velocity of 30 m/sec, the slightest touch may damage light papers, as journal’s paper. The sensor functions measuring the time that ultrasound waves take to propagate from laser induced excitation point to detection point, at few mm of distance: the velocity of waves between those points & through paper is linked to prodt.’s elastic properties
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