Urea Melamine Formaldehyde (UMF) combines the properties from urea formaldehyde and melamine formaldehyde polymers with optimum performance. High resistance to water minimizes water absorption in compact boards. Also, because of low formaldehyde emission it is compatible with E1 European standard. Powdered urea melamine formaldehyde adhesive is preferred to liquid adhesive where production runs are infrequent and longer storage life is needed.
Packaging, handling and transportation:
25 kg laminated PP bags
Storage Life:
6 months at 25 °C
Powder
| Characteristic | Typical Value |
|---|---|
| Appearance (Powder) | White powder |
| Bulk Density | 0.5 ± 0.05 g/cm³ |
| Moisture Content, max | 2 wt% |
50% Solution (1:1 liquid resin)
| Characteristic | Typical Value |
|---|---|
| Appearance | Transparent liquid |
| Viscosity at 20°C (Flow Cup) | 200 – 400 mPa.s |
| Free Formaldehyde | 0.3 – 0.5 wt% |
| pH at 25°C | 9 – 10.5 |
| Specific Gravity at 20°C | 1.2 - 1.3 |
| Gel Time at 100°C with Hardener | 60 – 90 s |
| Shelf Life at 25°C | 4 days |