The hot melt adhesive is the invisible but critical element in any edge banding operation. Choose the wrong type, run it at the wrong temperature, or apply too little — and you'll face delaminating edges, glue-line show-through, or post-production failure in the field. This guide covers every specification you need to make the right choice for your substrate, edge banding material, and end-use environment.
Hot melt adhesive (HMA) is a thermoplastic or reactive polymer that is applied in molten form, bonds on contact as it cools, and provides the adhesion between the edge banding tape and the panel edge. In edge banding machines, hot melt is loaded as granules or blocks into a heated glue pot, then applied to the panel edge (or tape back) by a roller or nozzle as the panel feeds through the machine.
The key performance requirements for edge banding hot melt are:
| Property | EVA Hot Melt | PUR Hot Melt | Polyolefin HM |
|---|---|---|---|
| Chemistry | Ethylene Vinyl Acetate | Polyurethane Reactive | Polyolefin (PP/PE based) |
| Application temp. | 170–200°C | 120–140°C | 160–190°C |
| Bond type | Thermoplastic (reversible) | Reactive (permanent) | Thermoplastic (reversible) |
| Heat resistance | Up to 60–80°C | Up to 120°C+ | Up to 90–00°C |
| Water resistance | Moderate | Excellent | Good |
| Creep resistance | Moderate | Excellent | Good |
| Cost | Low | High (2–3× EVA) | Medium |
| Machine compatibility | All standard machines | Requires PUR-capable machine | Most standard machines |
| Typical applications | General furniture, offices, bedrooms | Kitchens, bathrooms, outdoor, marine | PP edge banding, food-contact items |
EVA (ethylene vinyl acetate) is the most widely used hot melt adhesive for furniture edge banding worldwide. It accounts for approximately 80% of all edge banding adhesive consumption globally.
EVA granules or blocks are melted in the machine's glue pot at 170–95°C. The molten adhesive is applied to the panel edge (or tape back) at 100–00 g/m². As the tape is pressed against the edge, the adhesive cools within 2— seconds to handling strength, allowing immediate trimming and scraping in the same machine pass.
EVA's key limitation is temperature sensitivity. Above 60–80°C, the bond softens and can creep — this means EVA is not suitable for kitchen worktops near cookers, radiator covers, or outdoor furniture exposed to high heat. For these applications, upgrade to PUR.
PUR (polyurethane reactive) hot melt undergoes an irreversible chemical reaction with moisture in the substrate and air, forming a crosslinked polymer network. Once cured (typically 24–48 hours for full strength), PUR creates a permanent, waterproof, heat-resistant bond that cannot be remelted.
PUR requires specific machine features: a sealed, nitrogen-blanketed or moisture-protected glue tank to prevent premature curing, and typically a separate PUR heating system. Once opened, PUR pot life is 4— hours maximum. Residual PUR in the system will cure overnight and must be flushed with purging compound before the next use.
PUR is applied at 120–140°C — significantly lower than EVA. This lower temperature reduces thermal stress on delicate edge banding materials and eliminates charring of the adhesive in the pot.
Polyolefin (PO) hot melt is a polypropylene or polyethylene-based adhesive used in specific applications where EVA is not optimal:
| Parameter | EVA | PUR | Polyolefin |
|---|---|---|---|
| Glue pot temperature | 160–85°C | 115–35°C | 155–85°C |
| Application roller temperature | 170–95°C | 120–140°C | 165–90°C |
| Panel pre-heat | Not required | Recommended (20°C+) | Not required |
| Application weight | 120–00 g/m² | 80–50 g/m² | 120–80 g/m² |
| Press time / pressure | 2— sec at 0.3–.6 MPa | 3— sec at 0.3–.5 MPa | 2— sec |
| Handling strength | Immediate (after cooling) | Initial: immediate; Full cure: 24–8 h | Immediate |
| Cleanup | Scrape off while hot | Flush with PUR purging compound | Scrape off while hot |
Cause: Insufficient adhesive application, too-cold roller temperature, or panel edge too cold.
Fix: Increase roller temperature by 5–0°C; increase adhesive application weight; ensure workshop temperature is above 18°C.
Cause: Adhesive color too dark relative to tape/panel, or excessive application.
Fix: Switch to transparent or matching-color adhesive; reduce application weight to 100–30 g/m².
Cause: Glue pot temperature too high, or adhesive sitting in pot too long (overcooked).
Fix: Reduce pot temperature by 10°C; drain and clean pot at end of each shift; use fresh adhesive.
Cause: Using EVA in a high-humidity or wet environment where PUR is required.
Fix: Upgrade to PUR adhesive for kitchen/bathroom furniture.
Cause: Adhesive viscosity too low or temperature too high.
Fix: Reduce roller temperature; switch to a higher-viscosity EVA formulation.
EVA hot melt granules: USD 1.2–2.5/kg depending on grade and volume. PUR reactive hot melt: USD 3.5–5.0/kg. Polyolefin: USD 2.0–3.5/kg. Pricing for 5-ton+ container orders typically 15–25% lower than small-lot pricing. JINYOU provides factory-direct pricing with full technical data sheets.
EVA · PUR · Polyolefin · 25kg bags standard · Custom viscosity available · Full TDS provided
Get a Quote via WhatsAppEVA for general furniture; PUR for kitchen, bathroom, or outdoor applications requiring heat and moisture resistance. Polyolefin for PP edge banding or food-contact applications.
EVA: 170–200°C application temperature. PUR: 120–140°C. Polyolefin: 160–190°C. Always follow the specific data sheet for your adhesive grade.
Typically 1— kg per 8-hour shift for standard production. Application weight is 100–00 g/m² of edge surface.
Yes — EVA is thermoplastic and can be remelted the next day. However, long exposure to high heat causes degradation; reduce pot temperature to minimum overnight. PUR must be flushed from the system before shutdown.
EVA is thermoplastic (reversible), fast-setting, cost-effective, resistant up to 80°C. PUR is reactive (cures permanently), heat-resistant to 120°C+, waterproof, and much more expensive. Use PUR for kitchen and bathroom furniture.