20L Plastic Bottle Blow Molding Machine
20L Plastic Bottle Blow Molding
The Industrial 20L Plastic Bottle Blow Molding Machine is a heavy-duty, stretch-mold system engineered specifically for the high-precision production of large-capacity plastic containers, ranging from 10 liters to 20 liters. Designed to meet strict industrial packaging demands, this equipment transforms preforms into uniform, stress-resistant containers utilized in water treatment, bulk liquid logistics, and chemical storage. Built around a rigid mechanical framework and intelligent digital logic control, the system eliminates thermal drift and mold expansion under high-pressure parameters, ensuring consistent wall-thickness distribution and structural integrity for heavy-load industrial containers.
Key Product Features
Rigid Dual-Arm Clamping Mechanism: Incorporates a double-arm composite hinge structure integrated with a high-capacity buffer cylinder, delivering high clamping force to completely suppress parting line flash and mold expansion during high-pressure blowing.
Infrared Penetrating Thermal Control: Utilizes multi-stage infrared lamp configurations with independent voltage regulators and continuous air-cooling circulation to achieve deep, uniform heat penetration across thick-walled preforms (PET, PC, PP) without thermal degradation.
Biaxial Stretching Synchronization: Employs a dedicated pneumatic sealing and mechanical stretching cylinder combination that coordinates longitudinal rod extension with high-pressure air injection, optimizing molecular chain orientation for superior impact and burst resistance.
Closed-Loop Exhaust Recovery: Features an integrated pneumatic exhaust silencing and recycling facility that captures and muffles exhaust gas emissions, lowering operational decibel levels and stabilizing factory pneumatic loads.
Technical Specifications
|
Technical Parameter |
Specification Metric |
|
Production Capacity |
350 – 700 PCS/H (Configurable by single/multi-cavity setup) |
|
Container Volume Range |
10L – 20L |
|
Maximum Bottle Height |
500 mm – 550 mm |
|
Maximum Bottle Diameter |
Up to 350 mm |
|
Neck Finish Diameter |
10 mm – 150 mm |
|
Clamping Force |
200 kN (20 Tons) |
|
Operating Air Pressure |
Low Pressure: 0.7 – 0.9 MPa / High Pressure: 2.5 – 3.5 MPa |
|
Electrical Supply |
380V / 3-Phase / 50Hz (Total installed power: 35kW – 55kW) |
|
Machine Dimensions (L × W × H) |
Main Unit Layout: 4150 mm × 2050 mm × 2600 mm (Refer to official CAD layout drawing for exact footprint allocation) |
|
Total Weight |
Approx. 4.5 – 5.5 Tons |
Available Configurations Or Options
Cavity Customization: Available in 1-cavity (optimized for heavy 20L structural stability) or 2-cavity configurations depending on target output requirements.
Preform Feed Automation: Optional automatic gravity/elevator preform sorting and loading systems to reduce manual handling intervals.
Chilled Water Integration: Configurable industrial water chillers (5P–8P matching scale) to stabilize mold thermal cycles.
High-Pressure Compressor Pairing: Integrated high-pressure screw booster compressor packages tailored for 3.0 MPa blowing requirements.
Applications
Bulk Water Packaging: Production of 5-gallon (18.9L–20L) drinking water carboys used in commercial water dispenser distribution.
Edible Oil and Liquid Food Logistics: Manufacturing food-grade structural containers for bulk cooking oils, syrups, and sauce storage.
Industrial Chemical Storage: Fabrication of thick-walled, chemical-resistant containers for industrial solvents, detergents, and agricultural pesticides utilizing HDPE/PP matrices.
Product Selection Considerations
Resin Viscosity & Preform Weight: Match preform gram-weight and intrinsic viscosity (IV) specifications to the heating oven lamp pitch and infrared penetration capacity to prevent crystallization defects.
Utility Footprint & Air Supply: Verify that factory plant air compressors can continuously deliver the required cubic meter per minute (m³/min) flow rate at 3.0 MPa without pressure drop during peak blow cycles.
Cycle Time vs. Wall Thickness: Large-volume 20L containers require extended cooling and exhaust dwell times compared to standard beverage bottles; factor actual hourly output metrics rather than dry cycle estimates.
Floor Load Capacity: Ensure factory flooring meets the concentrated weight threshold (4.5 to 5.5 tons static footprint).
Quality Inspection And Testing
Hydrostatic Burst Testing: Sample containers undergo continuous internal water pressure testing to verify burst threshold limits under stacking loads.
Wall Thickness Distribution Analysis: Non-destructive ultrasonic thickness measurement across handle, base, and shoulder transition zones to ensure minimum structural threshold compliance.
Pneumatic Leak Detection: Factory dry-cycle pressure decay testing of pneumatic cylinders, valves, and circuit manifolds prior to crating.
Dimensional Profile Verification: Go/No-Go gauge testing of neck finish inner/outer diameters to guarantee seal compatibility with standard caps and valves.
Customization And Supply Scope
Custom Mold Design: Complete engineering of blow molds matching client-specific bottle geometries, handle integrations, and embossed brand logos.
Electrical Voltage Adaptation: Control transformer adjustments to support non-standard plant power grids (e.g., 440V/60Hz, 220V/60Hz).
Standard Supply Scope:
Main blow molding machine unit
Infrared preform heating oven
Pneumatic control cabinet with PLC
Initial set of quick-wear maintenance seals and toolkits
Technical documentation package (Electrical schematics, pneumatic diagrams, operation manual, and 2D/3D machine layout CAD drawings)
FAQ
Q: What is the maximum container volume and output rate for this machine?
A: The system is engineered for containers between 10L and 20L, yielding a stable production rate of 350 to 700 pieces per hour depending on cavity layout and preform gram weight.
Q: Which raw plastic resins are compatible with this equipment?
A: The machine primarily processes PET, PP, and PC resins commonly used for rigid, large-capacity industrial and liquid containers.
Q: What are the specific high-pressure air requirements for blowing 20L containers?
A: Blowing large-volume containers requires a high-pressure air supply ranging from 2.5 MPa to 3.5 MPa, supported by an industrial booster compressor and a low-pressure clamping supply of 0.7 to 0.9 MPa.
Q: How is wall thickness uniformity controlled on large-volume bottles?
A: Uniformity is achieved through independent zone-controlled infrared lamp heating, precise preform self-rotation speed regulation, and synchronized mechanical stretching rod movement.
Q: What utilities must be prepared prior to machine installation?
A: Facilities must provide a 3-phase 380V power source, a dedicated high-pressure screw air compressor, an air dryer system, and an industrial water chiller supplying constant 10°C–15°C cooling water.
RFQ Call To Action
To request a formal quotation, technical drawing review, or customized line configuration for your 20L bottle production facility, please submit the following operational parameters to our engineering team:
Target container volume, net weight (grams), and material type (PET/PC/PP)
Required hourly or daily production output
Available factory power supply specifications (Voltage / Frequency)
Existing auxiliary equipment status (compressor and chiller availability)
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