Why are there brown flakes in my hot melt glue?
Brown flakes mean the glue has charred. Reka gives two causes: it was heated above its recommended temperature, or kept hot too long, for example through breaks. Set the temperature from the adhesive's datasheet and turn it down during long breaks. Polyamide-based glues are especially sensitive to this.
Fix it
- Lower the temperature to the adhesive’s datasheet.
- A charred gun needs cleaning: ask your adhesive supplier for the right cleaning agent. Reka’s is Dyeclean #2265, available through spares.
- Never use solvents.
Questions.
Can I clean a charred gun with a solvent?
No. Never use solvents such as acetone, toluene, benzene or turpentine: risk of explosion. Use a cleaning agent made for hot melt.
Still stuck? Tell us.
Send the gun model, serial number (on the nameplate), purchase date and a photo or short video. We will tell you the fix, send the part, or arrange the repair.
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