Patent ID: 6032713
Filing Date: 2000-03-07
Classification: B31F,B32B,Y10T

Abstract:
A corrugated board manufacturing system including a first single facer for laminating a first core board formed in a predetermined corrugated shape to a liner and a second single facer for laminating a second core board formed in a predetermined corrugated shape to said first core board of a single-faced corrugated board formed by said first single facer in such a manner that the corrugations of the second core board match the corrugations of the first core board, said corrugated board manufacturing system further including:a first tension adjustor for adjusting the tension of the liner conveyed to said first single facer;a pitch measurer for measuring the corrugation pitch of the first core board of the single-faced corrugated board formed by said first single facer;a second tension adjustor for adjusting tension of the single-faced corrugated board formed by said first single facer;a phase shift measurer for measuring a phase shift between the corrugations of the first core board of the single-faced corrugated board formed by said first single facer and the corrugations of said second core board to be laminated to the first core board;a first tension controller which operates so that the tension acting on said liner is adjusted by said first tension adjustor on the basis of corrugation pitch of the first core board of said single-faced corrugated board measured by said pitch measurer; anda second tension controller which operates so that the tension acting on said single-faced corrugated board is adjusted by said second tension adjustor on the basis of the phase shift measured by said phase shift measurer.