PET Injection Molding Machine
High-Precision PET Injection Molding Machines
Industrial Preform Production Systems | Certified Low AA Levels & Ultra-Fast Cycle Times
PET is different from many common injection molding materials. It is sensitive to moisture and thermal degradation during processing. If the resin is not properly dried or the melt is exposed to unsuitable processing conditions, the finished preform may show haze, brittleness, discoloration or reduced mechanical performance.
Engineered for global bottle preform manufacturers, edible oil packaging brands, and high-cavity OEM suppliers. Engineered with specialized low-shear plasticizing technology, our PET systems ensure strict thermal protection, certified material stability, and continuous $24/7$ multi-cavity output.
Technical Specifications
|
Parameter |
Standard Range / Technical Basis |
|
Clamping Force |
160 Ton – 800 Ton (Custom engineering available) |
|
Shot Weight (PET) |
300 g – 3,500 g |
|
Mold Cavity Capability |
8 to 96 Cavities |
|
Screw L/D Ratio |
24:1 or 25:1 (Dedicated Low-Shear PET Profile) |
|
Temperature Control |
PID Multi-Zone Thermal Modules (±1°C Precision) |
|
Drive System |
Energy-Saving Servo Hydraulic / Hybrid Servo Drive |
|
Resin Compatibility |
Virgin PET, Up to 100% Recycled PET (rPET), Flame-Retardant PET |
|
International Standards |
CE Certified |
Engineered for Critical PET Processing Challenges
1. Certified Low Acetaldehyde (AA) & Intrinsic Viscosity (IV) Retention
AA Levels Below Industry Standards: Maintains AA buildup below 3 ppm - 5 ppm (depending on resin grade), meeting stringent global water and beverage bottling requirements.
Optimal IV Retention: Prevents thermal degradation, preserving the structural integrity required for high-ratio stretch-blow molding.
Haze & Black Spot Control: Multi-zone PID barrel control eliminates local overheating, keeping preforms crystal clear.
2. High-Response Servo Injection for Multi-Cavity Balance
Repeatable Injection Accuracy: Precision encoder feedback ensures exact switching between injection and holding pressure zones.
Uniform Wall Thickness: Eliminates preform weight deviations across 48, 72, or 96 cavities down to ±0.1 g.
3. Cycle Time Reduction & Energy Efficiency
Parallel Motion Systems: Plasticization during mold movement reduces total cycle time by up to 15% - 20%.
Servo Hydraulic Savings: Variable-displacement servo pumps reduce electricity consumption by 30% - 50% compared to fixed-pump systems.
Application-Specific Machine Configurations
Water & CSD Preforms
Fast-cycle configurations optimized for lightweight PCO/1881 necks and short cycle times.
Edible Oil & Wide-Mouth Jars
High injection volume configurations designed for heavy shot weights and thick-walled preforms.
Cosmetics & Personal Care
Crystal-clear aesthetic performance without hazing or surface flow lines.
PET Processing
Upgraded wear-resistant barrels and hardened screws tailored for up to 100% PCR/rPET flakes.
Turnkey PET Preform Line Solutions
Dehumidifying Drying Systems
Closed-loop air dryers ensuring resin moisture stays below 50 ppm (0.005%) with a dew point below -40°C.
Take-Out Robots & Post-Cooling
Multi-stage post-cooling pick-up arms that cool preforms externally, preventing neck deformation.
High-Precision Hot Runner Molds
Valve-gate preform molds engineered for long life cycles and zero-gate crystallization.
Auxiliary Equipment
Water chillers, mold temp controllers, automatic resin loaders, and storage conveyors.
Quality Assurance & Global Service Standards
Standardized Supply Chain
Built exclusively using globally serviceable industrial components:
- Control System: Siemens / Techmation PLC with intuitive multi-language HMI.
- Hydraulics: Bosch Rexroth / Yuken hydraulic valves and servo motors.
- Electrical System: Schneider / Omron safety circuitry.
Pre-Shipment Factory Acceptance Testing (FAT)
- 24-Hour Continuous Pressure Test: Verifies hydraulic seal integrity and thermal stability.
- Mold Trial & Quality Report: Full testing with customer molds. We provide comprehensive weight-consistency data, AA test reports, and dry-run video logs prior to shipment.
Field Support & Warranty
12-Month Comprehensive Warranty covering key mechanical and hydraulic components.
- Global On-Site Installation: Experienced commissioning engineers available for overseas plant installation, mold testing, and operator training.
- 24/7 Remote Diagnostics: PLC network connectivity for rapid troubleshooting and direct factory support.
Request a Technical Proposal & Line Layout
To help our engineering team select the exact injection unit, clamping force, and auxiliary automation for your plant, please provide:
Preform Drawing / Sample Weight (e.g., 28 mm neck, 18.5 g)
01
Target Cavity Count (e.g., 24, 32, 48, 72 cavities)
02
Required Output Capacity (preforms per day or hour)
03
Resin Specification (Virgin PET grade or rPET percentage)
04
Existing Plant Infrastructure Specs (power supply, cooling water availability)
05
FAQ