When investing in a new blown film line, choosing between a 3-layer ABA co-extrusion system and a 5-layer ABCDE line dictates your raw material cost structure, barrier capabilities, and target market reach.
The Economics of ABA 3-Layer Co-Extrusion
ABA technology uses two extruders to feed a three-layer die head. The outer "A" layers use virgin polymer to maintain gloss, sealability, and printability, while the middle "B" layer can incorporate up to 50–70% recycled resin or calcium carbonate (CaCO3) filler masterbatch. This dramatically reduces production costs for trash bags, shopping bags, and courier pouches without sacrificing surface quality.
When 5-Layer Co-Extrusion (ABCDE) is Mandatory
For vacuum packaging, food preservation, and chemical containers, standard polyethylenes cannot prevent oxygen or aroma transmission. 5-layer co-extrusion enables the insertion of barrier layers like EVOH or Polyamide (PA) bonded with tie layers (PE / Tie / EVOH / Tie / PE), providing high barrier protection with thinner total film gauges.
Equipment Recommendation & Summary
If your primary volume is retail shopping bags and waste sacks, the ABA Three-Layer Co-Extrusion Blown Film Line provides the fastest payback. If your customer base requires high-barrier food packaging or agricultural films, invest in the ABCDE-2200 Five-Layer Line.
