Secondo la guida ai test TAPPI (Associazione tecnica dell'industria della pasta di legno e della carta) quando si controlla la tensione del nastro, una linea guida generale deve applicare 0 0 1 0 0 1 { {4}} nbsp; 5% ~ 25% della potenza massima del Web e circa 0 0 1 0 0 1 0 nbsp; {{ 4}}. 5 ~ 1 PLI / mil di spessore.
Web tension control could be categorized into 3 main zones, unwind, internal and rewind. Each zone is independent therefore each zone could have its own tension. The torque required to provide a certain level of tension is measured by the total tension applied x the roll’s radius. Therefore, during production, the torque required at the unwinder will decrease as the roll diameter decreases and the torque required at the rewinder will increase with the increase in the roll diameter. & nbsp;The tension at the unwind and internal zones should remain constant throughout the production. However, this is not the case for the rewind zone. When the web is rewinded at the end of the production. As each layer builds up compressive forces which can cause the inner layer to wrinkle. Therefore, the tension reduces as the rolls build up. This process is called the Taper tension.
È importante controllare la tensione. Alcune delle attrezzature per misurare la tensione del nastro su una soluzione roll to roll includono la cella di carico, il rullo ballerino, il metodo della squama nella zona di svolgimento ...
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