Patent ID: 6730012
Filing Date: 2004-05-04
Classification: A47K,B65H

Abstract:
A sheet stack manufacturing process comprising:feeding a plurality of band sheets onto a respective folding guide plate or a folding roller; folding each band sheet in the plurality of band sheets longitudinally into two-folded band sheets such that two adjacent band sheets in the sheet stack are folded in opposite directions; refolding each two-folded band sheet longitudinally to provide four folds, said plurality of band sheets being combined with each other and stacked one on top of another to form a band-shaped sheet stack such that, upon folding a first two-folded band sheet, a portion of a second two-folded band sheet, which is a subsequent sheet that is immediately folded, is laid on a first band sheet and combined with the first band sheet; and cutting the band-shaped sheet stack to a predetermined length for separation into individual sheet stacks.