The modern thermoforming and packaging industry demands high clarity, rigid strength, and lower production costs. Reaching all three on a single-layer extruder usually means paying for 100% virgin PET resin. The TZ-machinery ABA PET three-layer co-extrusion sheet line solves this: an ABA structural sandwich lets manufacturers maximize recycled content without giving up surface finish or food-grade compliance.<\/p>\n
In an ABA three-layer co-extrusion system, two extruders split the sheet into three distinct layers:<\/p>\n
Lower-cost or recycled polymer is encapsulated between two virgin outer shells, so the sheet keeps a pristine visual appearance and smooth sealing behaviour while resin overhead drops sharply. If your feedstock is mostly recycled flake, see which PET extrusion machine suits recycled PET<\/a> for the wider selection logic.<\/p>\n Feeding rPET flake or factory scrap into the primary B-layer extruder cuts raw material cost substantially. The thin A-layers shield the core, hiding the colour variation and minor imperfections inherent to recycled plastic. Resin is the largest variable cost in sheet production, so this is where the payback comes from – the full model is set out in our PET sheet extrusion line investment and ROI guide<\/a>.<\/p>\n Co-extruded sheet carries higher impact strength and tear resistance than single-layer sheet. Bonding three layers under controlled thermal conditions gives high mechanical stability, which matters for heavy-duty thermoforming and deep-draw trays.<\/p>\n For food packaging, fruit trays, and blister packs, safety and appearance are both non-negotiable. The virgin PET outer layers act as a clean barrier, keeping the sheet food-safe while preserving the crystal-clear transparency buyers expect from APET and PETG.<\/p>\n Advanced melt pump metering, automatic die heads, and multi-zone temperature control hold gauge uniform across the full sheet width. Consistent gauge control minimizes thermoforming reject rates downstream.<\/p>\n2. Key Advantages of the TZ-machinery ABA PET Line<\/h2>\n
Significant raw material cost savings<\/h3>\n
Superior tensile strength and structural rigidity<\/h3>\n
Food-contact compliance and high visual clarity<\/h3>\n
Precision temperature and melt control<\/h3>\n
3. Key Technical Specifications<\/h2>\n
| Fonctionnalit\u00e9<\/th>\n | Sp\u00e9cifications<\/th>\n<\/tr>\n |
|---|---|
| Processed materials<\/td>\n | APET, PETG, rPET (recycled PET flake)<\/td>\n<\/tr>\n |
| Structure en couches<\/td>\n | ABA (surface \/ recycled core \/ surface)<\/td>\n<\/tr>\n |
| Extruder configuration<\/td>\n | Main extruder (core B) + side extruder (layers A)<\/td>\n<\/tr>\n |
| Output range<\/td>\n | 300 kg\/h to 1,000+ kg\/h (model dependent)<\/td>\n<\/tr>\n |
| Epaisseur de la t\u00f4le<\/td>\n | 0.15 mm – 1.8 mm<\/td>\n<\/tr>\n |
| Applications<\/td>\n | Thermoformed clamshells, food trays, blister packaging, folded boxes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n |