A clogged nozzle often occurs when hot melt adhesive degrades over time in the glue tank, it can also occur in hoses and glue applicator heads. When temperatures are high and some hot melt adhesives are unstable, this can occur as early as a lunch break, but more often it happens over a weekend, or due to downtime in another area of the line.
The right machine settings
Engineering managers often minimise the impact of hot melts by turning off the melting tanks and using standby mode. In practice, this is often forgotten and the hot melt adhesive starts to burn. On restart, this can result in chaos! Blocked nozzles, clogged filters and sometimes even defective hot melt units.
It is therefore important that you have adjusted all machine settings properly:
- The right, not too high temperature for your application
- An ascending temperature of Tank Hose Head order.
- Standby times
- Standby temperatures
The right settings mean that machine start-up is still fast, so you can always produce in the most efficient way.
With almost all brands, including Nordson, Robatech and Meler, we can adjust the optimal machine settings for you. This can be part of our maintenance or repair work.
New generation of hot melts
White polyolefin hot melt adhesive is specially designed to remain thermostable for much longer when heated continuously. You might say it is permissible to 'abuse' the hot melt adhesive - like forgetting to switch off the hot melt unit.
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