Hot Melt & Canmatic Solutions

Getting Hot Melt and Canmatic Lines Back in Spec

Wrap-around labeling holds together when three things stay in tolerance: glue temperature, the consistency of the glue film, and the timing of the label transfer. When one of them drifts, you see it downstream as stringing, flagging, or skewed labels. More often than not the machine is fine and a single worn component is the cause.

Where hot melt problems usually start

Glue pots and silicone rollers wear first. A pot that no longer holds an even temperature lays down an inconsistent film, and a hardened or grooved roller puts that film in the wrong place. Wipe-down brushes, rollers and pads that have lost tension leave the trailing edge unsecured, which is what shows up as flagging on the finished container. Label magazine fingers and bottle plates wear more slowly, but once they do, registration goes with them.

Rebuild and exchange instead of replace

Most of these components can be brought back to original tolerances rather than scrapped. Our glue pot exchange program lets you pull a rebuilt unit off the shelf, install it, and send the worn one back to us — so the line is down for a changeover rather than for a lead time. The same approach applies to Krones Contiroll parts and rebuilds, including vacuum drums and cutter assemblies, where a rebuild typically costs a fraction of a new assembly.

What to send us

• The machine model and, where possible, the part number from the component
• A description of the defect you are seeing on the container
• The container and label type you are running
• Photos of the worn component, if you have them

That is usually enough for our Canmatic specialists to tell you what they would check first and to quote only the parts you actually need. If the cause is not obvious from a description, we can audit the line on site.