Horizontal injection molding machine F-PET Series

servo-hydraulicservo-electricfor PET

Overview
The SANTSAI F-PET Series is a high-speed PET preform injection molding solution available in F-PET220 (220 t) and F-PET320 (320 t) models for 48- and 72-cavity production. It integrates two-stage injection, three-station external preform cooling, servo-electric plasticizing and intelligent process control for short, repeatable cycles and stable melt preparation.

High-Speed PET Preform Production
Designed for high-throughput PET preform manufacturing, the F-PET Series shortens cycle time while maintaining consistent material preparation and repeatable part quality. The F-PET220 suits typical 48-cavity molds; the F-PET320 targets 72-cavity, higher-output lines.

Two-Stage Injection for Stable Processing
The two-stage injection separates continuous plasticizing from the injection phase to ensure steady melt quality and consistent cavity filling.

• Two-stage PET injection system
• Independent plasticizing and injection units
• Stable melt preparation and repeatable filling
• Automatic mold-height adjustment
• Fast, coordinated machine movements

Three-Station External Preform Cooling
An external three-station cooling robot performs part of the cooling outside the mold to reduce in-mold cooling time and support shorter cycle lengths.

• Three-station external preform cooling
• Automatic preform take-out and transfer
• Reduced in-mold cooling requirements
• Stable preform handling and transfer
• Coordinated operation with injection cycle

Stable and Mold-Friendly Operation
Servo-pump hydraulics, low-pressure mold protection and an optimized platen-support structure reduce mechanical stress and detect abnormal resistance during mold closing to protect molds and parts.

Lower Operating Cost
The optimized PET plasticizing unit combines servo-electric plasticizing with energy-efficient barrel heating to reduce idle energy consumption while ensuring consistent material preparation.

• Servo-electric plasticizing
• Energy-efficient barrel heating
• Servo-pump hydraulic system
• Reduced idle power consumption
• Stable continuous operation

Intelligent Process Control
The machine control platform supports production monitoring, SPC-based process management and fault diagnosis for traceable, controllable production.

• Process parameter monitoring
• Embedded SPC functions
• Production-data recording and traceability
• Fault diagnosis and alerts
• User-oriented machine operation

Model Selection
Choose F-PET220 for 48-cavity applications and F-PET320 for 72-cavity, higher-output lines. Final selection depends on preform weight, neck finish, mold layout, cooling capacity and target cycle time.

Technical Specifications

• Screw Diameter: F-PET220 = 100 mm; F-PET320 = 110 mm
• Theoretical Shot Weight: F-PET220 = 2,925 g; F-PET320 = 3,860 g
• Clamping Force: F-PET220 = 220 t; F-PET320 = 320 t
• Clamping Stroke: F-PET220 = 590 mm; F-PET320 = 700 mm
• Mold Thickness (Min–Max): F-PET220 = 450–750 mm; F-PET320 = 450–900 mm
• Tie-Bar Spacing (H × V): F-PET220 = 620 × 720 mm; F-PET320 = 830 × 830 mm
• Maximum Mold Cavities: F-PET220 = 48 pcs; F-PET320 = 72 pcs
• Motor Power: F-PET220 = 161 kW; F-PET320 = 171.5 kW
• Total Installed Power: F-PET220 = 261.7 kW; F-PET320 = 293.6 kW
• Machine Dimensions (L × W × H): F-PET220 = 9,150 × 4,340 × 2,480 mm; F-PET320 = 10,500 × 4,500 × 2,720 mm

Reference Production Performance
Test condition: 23 g PCO 1881 PET preform.

• Mold Cavities: F-PET220 = 48; F-PET320 = 72
• Reference Cycle Time: 10.5 ±0.5 s (both models)
• Theoretical Output: F-PET220 = 16,457 pcs/h; F-PET320 = 24,685 pcs/h
• PET Throughput: F-PET220 = 378.5 kg/h; F-PET320 = 567.7 kg/h
• Theoretical Capacity: F-PET220 = 9.08 t/day; F-PET320 = 13.6 t/day

Complete PET Preform Production Solution

• F-PET injection molding system
• Multi-cavity PET preform mold
• Three-station external cooling robot
• Dehumidifying dryer
• Material conveying system
• Industrial chiller
• Mold cooling system
• Compressed-air system
• Process-monitoring equipment

Key Specifications Summary

• Example reference cycle time (23 g preform): ~10.5 s
• Theoretical outputs: F-PET220 = 16,457 pcs/h; F-PET320 = 24,685 pcs/h
• Features: Two-stage injection, three-station external cooling, servo-electric plasticizing, servo-pump hydraulics, low-pressure mold protection, embedded SPC