Envelope Machines: Folding
The Folding Machine
The blanks (printed and punched) then go in a machine that folds and
glues the envelopes. This folding machine is the most essential in the
production of envelopes. It can be designed to produce either open side
or open end envelopes.
Blank Folding Machine Folded Envelope
Corresponding Machine:
FL Smithe
Winkler & Dunnebier