Heat sealing is a critical step in food-grade packaging, ensuring product freshness and compliance. At AGK MORE, we tested our 300mm impulse heat sealer across three common packaging materials: kraft paper with PE lining, foil stand-up pouches, and PET/CPP plastic bags.
Each material responds differently to heat. Kraft bags sealed well at moderate temperatures (~2.0s), while foil pouches required slightly longer times (~2.8s) due to heat resistance. Plastic bags offered the most consistent seal across varying durations but showed minor shrinkage under high pressure.
In peel tests, foil pouches offered the highest seal integrity when properly sealed, while kraft bags occasionally displayed partial delamination without preheat.
Our results confirm:
- Pre-testing is essential for each material batch.
- Foil pouches demand longer dwell time.
- Excessive pressure can damage kraft layers.
- Plastic seals best at standard settings.
Whether you're sealing coffee bags or snack pouches, understanding the material response to heat sealing is key. The 300mm impulse sealer proves to be a versatile, reliable tool—when tuned correctly.
Looking for a heat sealer that adapts to your packaging range? Explore our 300mm Impulse Heat Sealer models designed for Australian food packaging businesses.