Packet mailers and the methods and apparatus for making them

A method for making a plurality of packet mailers from a substantially continuous web of printable paper comprising:

• substantially continuously feeding said web through at least two printing stations for ink printing at least one side of said web with information in at least two different colors, one color at each of said at least two stations in order to form packet mailers having printed information thereon;
• substantially continuously feeding said web through a station for applying re-moistenable adhesive at pre-determined remoistenable adhesive locations for making resealable enclosures, when in use, within said plurality of packet mailers;
• passing said web, substantially continuously, through a drying station for drying said re-moistenable adhesive and for drying the inks placed on the surfaces of said web;
• passing said web, substantially continuously, through a perforating station for placing on said web, at predetermined perforation locations, perforated lines that extend at least partially across said web to form removable inserts within said plurality of packed mailers and allow each respective individually formed packet mailer to be opened from a closed position;
• passing said web, substantially continuously, through a station for applying wet adhesive in discontinuous streaks at pre-determined locations on said web to seal each individual packet mailer in the closed position;
• passing said web, substantially continuously, through a plurality of adjustable gluing scoring and folding stations sequentially applying, at predetermined wet glue locations, streaks of wet glue to and in the direction of feeding of said web, and sequentially folding said web upon itself to enclose the applied glue within said folds to seal each individual packet mailer in the closed position;
• at each of said adjustable stations creating score lines, running with said web, at predetermined score line locations on said web to form fold lines at said pre-determined score-line locations;
• and
• passing said web, substantially continuously through a cutter to separate individually-formed packet mailers from said web, thereby completing formation of a plurality of packet mailers from said web.