Measurement system for improved paper roll runnability

D - Textiles – Paper – 21 – G

Patent

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Details

D21G 9/00 (2006.01)

Patent

CA 2602754

A system for measuring both caliper and tension of a web such as paper wound into a roll (10) . The system may include a standard caliper sensor whose air supply is selectively modified to allow for both the measurement of caliper and tension of the web. In another embodiment two similar or identical measurement devices are installed in tandem where one device measures tension without pinching the sheet and the other device measures caliper. The sensor may include two sheet guides (70, 72) for providing support for tension measurement or one or both sheet guides can be eliminated by support from machinery rolls.

L'invention concerne un système de mesure de l'épaisseur et de la tension d'une bobine telle que du papier enroulé dans un rouleau. Le système peut comprendre un capteur d'épaisseur standard dont l'alimentation en air est modifiée sélectivement de manière à permettre à la fois la mesure de l'épaisseur et la mesure de la tension de la bobine. Dans un autre mode de réalisation, deux dispositifs de mesure similaires ou identiques sont installés en tandem, un dispositif mesurant la tension sans pincer la feuille et l'autre dispositif mesurant l'épaisseur. Le capteur peut comprendre deux système de guidage des feuilles de manière à permettre la mesure de tension ; il est également possible d'éliminer l'un des systèmes de guidage des feuilles grâce au support des rouleaux de machine.

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