Semi-Automatic PET Stretch Blow Molding Machine
Semi-Automatic PET Stretch Blow Molding Machine
The Semi-Automatic PET Stretch Blow Molding Machine is a specialized two-stage stretch blow molding system designed for small-to-medium-scale production of polyethylene terephthalate (PET) plastic bottles and containers. It is widely utilized by packaging manufacturers, beverage producers, and independent container plants requiring flexible manufacturing runs, quick mold changeovers, and a lower initial capital investment compared to fully automatic rotary systems.
This equipment takes pre-heated PET preforms and utilizes high-pressure air and mechanical stretching to form finished containers, making it ideal for producing mineral water bottles, carbonated soft drink containers, edible oil bottles, and personal care packaging.
Key Features & Specifications
Two-Stage Molding Process: Utilizes pre-formed PET preforms to ensure stable wall thickness distribution and consistent container clarity.
Infrared Preform Heating System: Features adjustable infrared lamps and a rotating preform carrier track for uniform heat penetration across various preform sizes and weights.
Pneumatic Control System: Employs reliable pneumatic components to govern mold clamping, stretching, and blowing actions with repeatable cycle timing.
Operator Safety Interlocks: Equipped with safety shields and dual-hand start or emergency stop controls to protect operators during manual loading and unloading cycles.
Compact Footprint: Engineered for facilities with limited floor space, requiring minimal auxiliary equipment for basic operation.
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Specification Parameter |
Standard Technical Range / Detail |
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Machine Type |
Semi-Automatic PET Stretch Blow Molding Machine |
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Processing Material |
PET (Polyethylene Terephthalate) |
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Cavity Count |
Typically 2-cavity or 4-cavity (Confirm exact model) |
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Max. Bottle Volume |
Typically ranges from 0.1L to 2.0L (Model-dependent) |
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Theoretical Production Output |
Approx. 1,000–1,500 BPH for 500ml standard bottles (2-cavity model; varies by bottle size, neck finish, and operator rhythm) |
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Electrical Power Supply |
Customizable options available for international grids (e.g., 380V / 50Hz 3-Phase or 220V/440V 60Hz 3-Phase - Confirm specific voltage requirements) |
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Working Air Pressure |
Requires high-pressure and low-pressure air supply lines (Confirm specific bar/PSI requirements) |
Available Configurations & Options
Mold Customization: Interchangeable mold sets designed for distinct bottle shapes, capacities, and neck finishes.
High-Pressure Air Compressor Integration: Optional or recommended high-pressure booster systems required for blowing specific container types (e.g., carbonated beverages).
Preform Chiller / Water Chiller: Optional auxiliary cooling units to regulate mold temperature and maintain consistent cycle speeds.
Electrical Grid Adaptability: Custom transformer or wiring configurations to match regional industrial power standards.
Target Applications
Beverage Packaging: Production of mineral water, purified water, tea, juice, and carbonated soft drink bottles.
Edible Oil and Condiment Containers: Small-to-medium capacity bottles for cooking oils, vinegar, and sauces.
Personal Care and Cosmetics: Packaging for shampoos, lotions, liquid soaps, and cosmetic items.
Household and Industrial Cleaners: Containers for light detergents, window cleaners, and chemical liquids.
Selection & Compatibility Considerations
Bottle Design and Geometry: Ensure the maximum volume, height, and diameter fall within the machine's stretching and mold clearance limits.
Neck Finish Compatibility: The preform neck finish (e.g., PCO 1810, 1881, 29/25, or custom thread sizes) must match the design of the blow mold and neck holder inserts.
Preform Weight & Distribution: Heavier preforms require precise heating optimization to prevent uneven wall thickness or stress whitening.
Utility Infrastructure: Confirm availability of stable electrical power supply (matching regional voltage/frequency standards) and adequate compressed air infrastructure (including low-pressure control air and high-pressure blowing air).
Supply Scope & Commercial Terms
Standard Supply Scope: Main blow molding machine unit, integrated infrared preform heater, and basic toolset.
Customization Scope: Custom bottle molds, specific voltage adaptations, and auxiliary equipment (such as air compressors or chillers) are subject to separate quotation and confirmation.
Commercial Terms: Minimum order quantity (MOQ), production lead time, crating/packaging specifications, warranty coverage, and delivery terms must be verified during the formal inquiry process.
FAQ
Q: What is the difference between this semi-automatic machine and a fully automatic stretch blow molding machine?
A: A semi-automatic machine requires an operator to manually load heated preforms into the mold and unload finished bottles, making it suitable for lower-volume production, frequent mold changeovers, or startup operations. Fully automatic machines utilize automated preform feeding and bottle unloading conveyors for high-speed, continuous mass production.
Q: Does the machine include the high-pressure air compressor required for blowing?
A: Standard machine supply configurations typically exclude air compressors and chillers unless explicitly itemized in the quotation. Buyers must confirm whether auxiliary air compressors are included or need to be sourced separately.
Q: How do I determine if my existing preform will work with this machine?
A: You need to provide the preform weight, neck finish standard, overall length, and the desired bottle drawing to verify neck clamping compatibility and heating tunnel dimensions.
Q: What utility connections are required on-site to operate the machine?
A: Operation requires a stable electrical power supply configured to local standards (such as 380V/50Hz or 220V/440V 60Hz), a low-pressure air source for clamping/actions, and a high-pressure air compressor for bottle blowing.
Q: Can one machine produce different bottle shapes?
A: Yes, by changing the blow mold inserts and adjusting the heating parameters, a single machine frame can produce various bottle shapes within its size capacity range.
Request for Quotation
To receive an accurate quotation for the Semi-Automatic PET Stretch Blow Molding Machine, please provide the following technical details with your inquiry:
Target bottle volume (ml / Liters) and intended application (e.g., water, oil, cosmetics).
Bottle drawing or 3D sample specifications (including height, diameter, and shape).
Preform specifications (weight in grams and neck finish size).
Desired production output or target shift volume.
Local electrical power supply specifications (Voltage, Phase, Hz - e.g., 380V 3-Phase 50Hz).
Required auxiliary equipment (e.g., high-pressure air compressor, water chiller, or custom molds).
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