double-sixteen folder
A particular folding machine capable of folding
two 16page sections or one 32-page section. This
folder can also be equipped to produce two 32-page
sections, though of a smaller page size. Double
16s have three folding levels and four sets of
folding rollers. The sheet is slit in half at the
first folding level and each half is folded
individually at right angles at the second level.
It is folded once again at the third level, which
has only one set of folding rollers; in this
level, if the sections are to be outserts, each of
the two folded sheets is folded in succession,
whereas if the sections are inserts, both sheets
are combined and folded together. A fourth folding
level may be added to make the machine capable of
producing two 32page sections. See also:FOLDING MACHINES .
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