The EVA vs PUR debate comes up every time you need to equip your workshop or justify a cost to a client.
The answer depends on three concrete variables: the type of furniture being produced, the final price you want to achieve, and the automatic edge bander you have available.
Two different chemistries, two different applications
EVA (Ethylene Vinyl Acetate) glue is thermoplastic: it melts at 160–200°C, is applied, and solidifies upon cooling. The process is reversible — if the joint heats above 60–70°C, the bond fails. Excellent for standard production in dry environments, less suitable wherever furniture is exposed to prolonged heat or moisture.
PUR (Reactive Polyurethane) works differently. After initial solidification it triggers an irreversible chemical cross-linking: it absorbs moisture from the air and the wood and forms a permanent bond that completes in 24–48 hours.
It has certified Grade D4 resistance according to standard EN 204 and stable hold up to 150°C. It is the mandatory choice for kitchens, bathrooms, and any contract furniture.
The real cost per linear metre: a calculation that changes everything
The price per kg of PUR can be double that of EVA. The correct comparison, however, must be made on actual consumption per linear metre processed.
| Glue type | Average Consumption | Requirement / 10,000 m | Estimated Cost |
|---|---|---|---|
| EVA glue | 8 g/m | 80 kg | ~€400 (at €5/kg) |
| PUR glue (at double the price) | 4 g/m | 40 kg | ~€400 (at €10/kg) |
The spend is identical. The result is not: at equal cost, PUR glue guarantees D4 hold, resistance up to 150°C, and a virtually invisible joint.
The operational advantage of PUR glue goes beyond the numbers: less glue in the pot means less risk of carbonisation, less waste at the end of a shift, and less cleaning.
The invisible joint: when edge aesthetics are worth more than the glue saved
EVA glue produces a visible adhesive layer. PUR, thanks to its extremely high initial bonding strength, requires significantly less: the result is what is known as the “zero joint” — a bond perceived as part of the panel, not as an addition.
On thick ABS or PVC edges, this detail directly affects the positioning of the finished piece and the price you can command.
Managing both glues. Without a second pot
The historic limitation of PUR in production is not the cost: it is the management.
Complicated glue changeovers, mandatory end-of-shift cleaning, and the risk of blocking the application system if the machine stops.
On Casadei models with the upper hybrid EVA/PUR glue pot (E550T, E550CRT, Kronos 60.0) these problems do not exist:
- Switching from EVA to PUR — or vice versa — takes around 15 minutes, with no dismantling required
- If the machine stands idle for up to 4 days with PUR in the pot, no cleaning operation is required
- Thanks to the integrated heating in the glue roller, the glue maintains the correct temperature right up to the moment of application on the panel — not just in the pot. With PUR, this detail makes the difference between a uniform joint and an uneven one.
In summary, these are the key differences between the two glue types:
| Feature | EVA | PUR |
| Heat resistance | Up to 60–70°C | Up to 120–150°C |
| Water resistance | Medium | Grade D4 (EN 204) |
| Consumption per metre | 6–10 g/m | 3–5 g/m |
| Joint aesthetics | Visible | Virtually invisible |
| Setting time | Immediate | 24–48 h (full cure) |
| Changeover on Casadei hybrid pot | Standard | ~15 minutes |
| Downtime for pot cleaning | — | None (up to 3 days) |
Would you like more information about the gluing system? Contact us.
We will analyse your workflow together and identify — data in hand — the Casadei model best suited to your needs.