本文目前仅提供英文版。
A dispersion adhesive is a water-based adhesive in which solid polymer particles are finely dispersed in water. As the water evaporates or is absorbed by a porous substrate, the particles coalesce into a continuous film. Being solvent-free, dispersions are low in odour and emissions.
Types
- PVAc (white glue): the workhorse of wood and furniture; water resistance classes D2, D3 and D4.
- VAE: better adhesion to plastic films; paper, packaging and foil lamination.
- PU dispersion (PUD): heat-activated, high heat and plasticiser resistance; 3D membrane pressing, automotive trim, textiles.
- EPI: dispersion plus isocyanate hardener for structural wood, windows and doors.
Pros and limits
Solvent-free, economical and easy to apply, but at least one porous substrate or drying is needed, they must be protected from frost, and they set more slowly than hot melts.
Browse our dispersion adhesives or ask for advice.
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