Packaging lines run dozens of cases a second. At that speed every adhesive property turns into efficiency and cost.
Key selection criteria
1. Open time and set speed Faster lines need shorter open time and faster setting. A slow-setting adhesive causes flaps to pop open.
2. Temperature range In frozen food packaging the adhesive must not be brittle at −20 °C; for hot-filled products it must not soften at high temperature. PO adhesives with a wide service range stand out here.
3. Board type Recycled, coated or varnished boards need different formulations. On coated surfaces consider special grades or copolymer dispersions.
4. Food regulations For direct or indirect food contact, use products made from compliant raw materials. Barrier solutions against mineral oil migration are increasingly important.
EVA or PO?
| Criterion | EVA | PO (metallocene) |
|---|---|---|
| Cost | Low | Medium |
| Consumption | Standard | 20–40% lower (low density) |
| Tank stability | Good | Very good, little charring |
| Odour | Slight | Very low |
| Cold resistance | Good | Very good |
Sustainable options
Bio-based hot melts cut the carbon footprint without hurting packaging recyclability. Lower-temperature grades save energy.
Low-temperature application
Some modern formulations run at 130–150 °C, cutting energy use, improving operator safety and preventing charring.
Let's run a trial on your line and measure the real savings together.
