Adhesive degradation from long tank residence
Medium severitySymptoms
Bonding worsening through the day at constant settings; visibly different viscosity; darker color
Probable causes
- Low consumption with a large tank (adhesive 'living' hot for hours)
- high temperature accelerating thermal ageing
The Print Guy · 2026-10-05
Other problems in this category
Folder-gluer · TPG-258
Glue bead outside the flap (visible glue)
Glue peeking out of the finished box edge; boxes stuck together in the pile
Folder-gluer · TPG-260
Insufficient pre-fold (pre-breaking)
Boxes not flattening, bulging in the pile or levering the bond open
Folder-gluer · TPG-262
Scuffing of boxes by belts and guides
Shiny or friction streaks on the printed faces
Folder-gluer · TPG-263
Double feed or feeder jams
Two blanks entering together or machine jamming at the feed
Folder-gluer · TPG-264
White glue drying on the applicator or stringing
Crusted disc/nozzle; intermittent application; glue threads over the machine
Folder-gluer · TPG-268
Hotmelt angel hair all over the machine
Adhesive cobwebs between gun and boxes; threads stuck to belts and guides