This production line produces PP strapping with extremely high tensile strength and breakage resistance, fundamentally eliminating the problem of strap breakage during strapping. The equipment features a φ120mm 38CrMoAlA alloy steel screw with a 30:1 L/D ratio, paired with a 55KW high-efficiency main motor, achieving a maximum output of 220-240 kg/h.

Through a multi-stage stretching process with an adjustable draw ratio of 1.5-12 times, PP molecular chains become highly oriented along the stretching direction, increasing longitudinal tensile strength several times over its unoriented state. The extruder's 9-zone independent temperature control (±1°C accuracy) ensures uniform melt plasticization, eliminating stress concentration points.

The finished strapping's breaking strength far exceeds industry standards, suitable for heavy-duty packaging and fully automatic high-speed strapping machines - end users no longer complain about breakage.

• Breakage-free guarantee: High tensile strength ensures no sudden breakage during strapping
• High molecular orientation: 1.5-12x draw ratio aligns PP molecular chains along stress direction
• Premium screw material: 38CrMoAlA alloy steel with nitriding, HRC58-60 hardness, ≥99% plasticizing uniformity
• Precision temperature control: 9-zone independent control with ±1°C accuracy eliminates local overheating
• Multi-stage stretching: Pre-stretching + main stretching for full molecular orientation
• Low internal stress: Multi-stage heat setting eliminates stress-induced brittleness
• High strength output: Standard 12mm*0.6mm at 8-10x draw ratio achieves 200kg+ breaking force
• Fully automatic ready: High-strength straps run continuously without breakage
• Reduced complaints: No breakage means no downtime and zero end-user complaints
• Heavy-duty suitable: Strength sufficient for building materials, metals, heavy machinery