Process for manufacturing sheet stack
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United States of America Patent
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May 4, 2004
Grant Date -
Jul 4, 2002
app pub date -
Oct 1, 2001
filing date -
Oct 4, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a sheet stack manufacturing process. At first, a plurality of band sheets are fed. Each band sheet is folded at least once along a longitudinal direction thereof at a first folding step, to form folded bands. Then, each folded band is folded along the longitudinal direction at a second folding step to have at least three fold lines by the first and second folding steps and to sandwich a portion of at least one of an overlying sheet and an underlying sheet thereof, thereby to form a band-shaped sheet stack in which a plurality of sheets are combined with one another so as to be stacked on one another. The band-shaped sheet stack is cut to a predetermined length to be separated into individual sheet stacks.
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