Phase control method and system for corrugated fiberboard sheet comprising a plurality of core paper layers

摘要

The present invention relates to a method capable of certainly correcting a phase shift between a plurality of core paper layers. In the method according to this invention, the next phase shift quantity delta '3 is estimated on the basis of a previous measured phase shift value delta 1 and the present measured phase shift value delta 2 and a single-faced corrugated fiberboard sheet tension changing quantity DELTA T1 for correction of the next phase shift quantity delta '3 estimated is calculated to adjust the tension to the single-faced corrugated fiberboard sheet on the basis of the calculated tension changing quantity DELTA T1. This invention is effectively applicable when, for example, manufacturing a two-layer core single-faced corrugated fiberboard sheet or the like.