Every winter, bonding lines see the same complaints: lifting edge bands, adhesives that won't dry, thickened dispersions. The cause is usually temperature, not the product.
Hot melts
A cold panel or part freezes molten adhesive on contact, so it cannot wet the surface. Open time also shortens in a cold shop.
- Move panels to a warm area at least 24 hours before production (ideally ≥ 18 °C).
- Use infrared panel preheating where possible.
- Block draughts around the line, such as open doors.
Dispersions
Water-based adhesives are sensitive to frost, and a frozen dispersion can be irreversibly damaged.
- Store packs where the temperature stays above 5 °C.
- Bring to room temperature before use; don't thin a thickened adhesive with water.
- Respect the minimum film-forming temperature (MFFT); below it the adhesive won't form a proper film.
Moisture-curing systems
PUR, 1C PU and MS polymers cure more slowly in winter's low humidity. Time to final strength can lengthen, so plan holding times before shipment accordingly.
Solvent-based adhesives
Solvents evaporate more slowly in the cold, lengthening flash-off time. Joining too early traps solvent and weakens the bond.
Winter checklist
- Warehouse ≥ 5 °C (for dispersions)
- Material and panel temperature ≥ 18 °C
- Adhesive temperature within data-sheet range
- Flash-off and cure times extended
- Draughts blocked
Contact us for winter recommendations tailored to your line.
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