High-Speed Automatic PET Blow Molding Machine
High-Speed Automatic PET Blow Molding Machine
This linear automatic PET stretch blow molding machine produces PET bottles ranging from 200 ml to 25 L for water, carbonated soft drinks (CSD), edible oil, cosmetics, and household chemicals. Built on a heavy-duty steel chassis with servo-driven stretching and clamping systems, it achieves stable continuous production up to 600 BPH per cavity (model-dependent). The unit integrates automatic preform loading, infrared rotary oven heating, pneumatic/servo stretch-blowing, and mechanical robot discharge to reduce labor dependence and maintain bottle weight uniformity within ±0.2 g.
Key Product Features
Servo-Driven Clamping & Stretching: Synchronized servo drive eliminates hydraulic oil contamination, reduces mold clamping cycle time, and ensures high precision during preform elongation.
Infrared Heating Oven: Rotary heating module equipped with adjustable voltage control modules and SCR temperature regulators; independent lamp height and angle adjustment optimize heat penetration across neck-to-bottom preform wall profiles.
Pneumatic Control Architecture: Integrated SMC pneumatic cylinders (Japan) and Airtac directional valves (Taiwan) manage preform transfer, sealing, and blowing routines under operating pressures up to 3.5 MPa.
PLC Automation & HMI: Mitsubishi PLC paired with a multi-language touchscreen controls temperature loops, blowing pressure curves, and error diagnostics with real-time status display.
Rapid Mold Changeover: Quick-lock mold clamping architecture allows cavity and shell replacements within 30–45 minutes, minimizing line downtime during product switching.
Technical Specifications
|
Parameter |
2-Cavity (Small/Medium Container) |
1-Cavity (Large Container MW-AUTO25L) |
|
Max Container Volume |
2,000 ml |
25,000 ml |
|
Max Container Diameter / Height |
105 mm / 330 mm |
230 mm / 460 mm |
|
Max Preform Neck Diameter |
38 mm |
65 mm |
|
Theoretical Output |
2,000 – 2,400 BPH |
600 BPH |
|
Clamping Force |
180 kN |
650 kN |
|
Mold / Stretching Stroke |
180 mm / 350 mm |
320 mm / 460 mm |
|
Low / High Pressure Air Supply |
0.7–0.9 MPa / 2.5–3.5 MPa |
0.7–0.9 MPa / 2.5–3.5 MPa |
|
Installed Power / Operating Power |
36 kW / 22 kW |
80 kW / 44 kW |
|
Electrical Supply |
380V / 50Hz / 3-Phase (customizable) |
380V / 50Hz / 3-Phase |
|
Chiller Requirement |
5 HP (9–13°C chilled water) |
5 HP (9–13°C chilled water) |
|
Machine Dimensions / Weight |
2.2 × 1.5 × 1.8 m / 2,200 kg |
4.0 × 1.8 × 2.2 m / 4,500 kg |
Available Configurations Or Options
High-Pressure Air Recovery System: Recovers up to 25% of exhaust air from primary blowing to feed low-pressure pneumatic actuators, lowering total energy consumption.
Neck-Cooling Protection System: Water-chilled channels integrated into the oven track prevent neck deformation on hot-fill and wide-mouth preforms.
Automatic Preform Unscrambler & Elevator: Taili motor-driven elevator with optical sensors automatically feeds preforms to eliminate manual loading.
Hot-Fill Option: Adapted heating and mold temperature control (up to 120°C) for juice and tea packaging lines requiring thermal resistance up to 85°C–92°C.
Applications
Bottled Water & CSD: 250 ml to 2.0 L lightweight PET bottles with neck finishes from 28/38 mm (PCO 1810 / 1881).
Edible Oil Containers: 1 L to 5 L square or round bottles featuring thick-walled handles and 38/45 mm neck standards.
Large Water Drums: 10 L to 25 L dispenser bottles replacing traditional PC drums with recyclable PET material.
Personal Care & Chemicals: Custom-shaped packaging for detergents, cosmetics, and agrochemicals requiring precise wall distribution.
Product Selection Considerations
To match the right machine model to your line, evaluate:
Target Bottle Geometry & Neck Size: Large necks (>45 mm) or deep-drawn handles require wider cavity pitch and higher clamping force (e.g., MW-AUTO25L).
Air Compressor Sizing: High-pressure blowing consumes up to 4.0 m³/min at 3.5 MPa. Match high-pressure air supply to bottle volume and target output per hour.
Power Grid Compatibility: Standard configuration is 380V/50Hz 3-Phase; specify local electrical variations (e.g., 220V/60Hz or 460V/60Hz) prior to manufacturing.
Resin Material: 100% rPET preforms require modified infrared lamp wavelengths and refined heating zone controls to compensate for altered heat absorption rates.
Quality Inspection And Compliance
Regulatory & Safety Compliance: Fully CE certified under European Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU, equipped with safety door interlocks and emergency stop circuits.
Factory Acceptance Testing (FAT): 48-hour continuous dry-run followed by a full-load production run using buyer-supplied or standard preforms prior to dispatch.
Key Component Sourcing: Schneider switches/relays (France), Omron/SMC sensors and cylinders (Japan), Mitsubishi PLC (Japan), and Delta power modules (Taiwan).
Quality Check Points:
Wall thickness consistency checked via ultrasonic gauge across top, middle, and bottom sections.
Burst pressure testing up to 10–12 bar for carbonated container profiles.
Dimensional neck integrity verification using go/no-go gauges.
Customization And Supply Scope
Customization Capabilities: Custom mold design (CAD/3D modeling), preform weight optimization, specialized bottle handling arms, and HMI language customization.
Standard Supply Scope:
Main PET blow molding unit (CE compliant)
Automatic preform elevator and unscrambler
Infrared heating oven module
Mold set (1 set customized to sample)
Spare parts kit: infrared lamps, seal rings, high/low pressure air pipes, robot clips, fuse relays, maintenance tools
FAQ
Q: What auxiliary equipment is required to operate this machine?
A: A complete setup requires a high-pressure air compressor (3.0–3.5 MPa), a low-pressure air compressor (0.8–1.0 MPa), an air dryer with filters, and an industrial water chiller (5 HP, supplying 9–13°C water).
Q: Can one machine produce multiple bottle sizes?
A: Yes. As long as the container dimensions fall within the max diameter, height, and neck size limits of the specific model, you can produce different bottle shapes by changing the aluminum mold.
Q: How long does a mold changeover take?
A: A trained operator can complete a standard mold change and adjustment in 30 to 45 minutes using standard hand tools included in the toolkit.
Q: What is the typical service life of wear parts?
A: Infrared heating lamps typically last 5,000–8,000 hours. Pneumatic seal rings and robot clips have a service life exceeding 12 months under standard operating conditions.
Q: How do you handle installation and operator training for overseas buyers?
A: Machines ship fully pre-wired and tested. We provide CE-compliant electrical/pneumatic diagrams, detailed installation manuals, and step-by-step video guides. On-site commissioning and engineer dispatch are available upon request.
RFQ Call To Action
Request a Technical Quote & Mold Evaluation
Send us your bottle drawing (or preform weight, neck finish, target capacity, and speed requirement). Our engineering team will review your specifications, provide a mold 3D rendering, and return a detailed equipment proposal with system air/power calculations within 24 hours.
Contact our sales engineering team via the inquiry form below or email your layout drawings directly to get started.
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