03 — Die / Mold System
Precision Post Consumer Soft Plastic Baling Die Mold Fixture Engineering
This heavy-duty soft plastic baling chamber features wear-resistant alloy steel liner plates, multi-channel wire strap tying slots, and integrated hydraulic bale ejection mechanisms. Engineered for 400-ton hydraulic compaction, it provides maximum volume reduction, overcomes elastic film springback, and enables rapid manual or automated bale binding.
Use Case
The soft plastic baling chamber and fixture system integrates into 400-ton four-column hydraulic presses to compact loose LDPE, LLDPE, and agricultural film waste into high-density bales. Integrated strap tying channels allow operators to bind bales under full hydraulic hold, facilitating efficient storage, transport, and recycling transfer.
Technical Specifications (Tooling)
Die Type
- Heavy duty compaction chamber mold frame assembly with integrated wire and strap tying slots
- Rigid rectangular baling box structure with hydraulic door locks and automatic bale ejection pins
Die Materials
- High strength NM400 wear resistant alloy steel inner chamber liner plates for maximum abrasion protection
- Heavy duty Hardox 450 steel compaction platen face plates engineered to resist constant plastic film friction
Tool Configuration & Construction
- Precision CNC machined heavy steel plate welded chamber construction designed for high density volume reduction
- Reinforced structural steel outer framework engineered to withstand lateral film expansion pressures up to 400 tons
Key Tooling Features
- Precision aligned horizontal and vertical strap tying channels enabling rapid manual or automatic wire binding
- High capacity rear hydraulic ejector ram unit pushing completed film bales smoothly out of the chamber
Alignment Accuracy
- Moving upper platen slide to inner chamber wall guide clearance deviation kept strictly under a limit of 0.015 mm
- Compaction platen parallelism variance across active chamber area restricted within a tolerance of 0.015 mm
Process Materials
- Low Density Polyethylene LDPE films LLDPE stretch wraps shrink packaging and carry bags
- High Density Polyethylene HDPE thin films agricultural covers greenhouse sheets and woven polypropylene sacks
Surface Finish
- Inner chamber wear liner surfaces fine ground and anti rust coated down to a surface roughness of Ra 0.80 microns
- Friction reducing polished platen face plates ensuring smooth film compression and easy bale extraction
Tool Life
- Expected operational span of 150000 baling compression cycles before requiring inner liner plate replacement
- Total structural steel chamber frame and base assembly lifespan capacity reaching 500000 production cycles before major rebuilds
