In PET bottle manufacturing, the water bottle blowing machine is the core system. It controls output, bottle clarity, and energy use. From an engineering view, performance depends on system matching, not machine speed alone.
In real factories, most problems come from air, cooling, and mold mismatch.
Key Performance Parameters of Water Bottle Blowing Machine
| Water Bottle Blowing Machine | YG-2L-2 | YG-2L-4 | YG-2L-6 | YG-2L-8 |
| Cavity | 2 | 4 | 6 | 8 |
| Theory output | 2000-2700 | 4000-5000 | 6000-7200 | 8500-9000 |
| Max. volume | 2L | 2L | 2L | 2L |
| Bottle mouth maximum overall diameter | 80mm | 28-38mm | 28-38mm | 28-38mm |
| Bottle biggest diameter | 100mm | 100mm | 100mm | 100mm |
| Bottle maximum height | 330mm | 330mm | 330mm | 330mm |
| Light tube quantity | 16pcs | 40pcs | 64pcs | 32pcs |
| Light tube power | 1.5KW | 1.5KW | 1.5KW | 1.5KW |
| Maximum heating power | 24KW | 40KW | 80KW | 80KW |
| All-electric machine installation | 26KW | 60KW | 85KW | 85KW |
| Actual consumption | 19KW | 30KW | 40KW | 40KW |
| Work pressure | 7-9kg/c㎡ | 7-9kg/c㎡ | 7-9kg/c㎡ | 7-9kg/c㎡ |
| Low-pressure gas consumption | 1000L/min | 1600L/min | 1600L/min | 1600L/min |
| Blow bottle pressure | 25-35kg/c㎡ | 25-35kg/c㎡ | 25-35kg/c㎡ | 25-35kg/c㎡ |
| Higher-pressure gas consumption | 1500Ltr/min | 3000Ltr/min | 4000Ltr/min | 4800Ltr/min |
| Work pressure | 5-6 kg/c㎡ | 5-6 kg/c㎡ | 5-6 kg/c㎡ | 5-6 kg/c㎡ |
| Temperature range | 10℃ | 10℃ | 10℃ | 10℃ |
| Consumption | 5000kcal/hr | 8000kcal/hr | 8000kcal/hr | 12000kcal/hr |
| Frozen water flow | 30L/min | 88L/min | 88L/min | 88L/min |
| Size of the machine | 2.5*1.6*1.7 m | 4.5*2.0*2.3 m | 6.5*2.0*1.9 m | 6.7×2.0×2.3m |
| Weight of the machine | 2.0ton | 4.0ton | 5.5ton | 6.0ton |
- Heating accuracy ±1–2°C
- Air pressure 25–40 bar stability
- Neck compatibility range
- Cooling efficiency
- Cycle time 2.5–3.5 sec
💡 Tech note: pressure fluctuation over 2 bar affects bottle shape.
How Does a Water Bottle Blowing Machine Work?
PET blowing is a heat and pressure forming process.
The preform is heated to 95°C–115°C. Then it enters the mold. High pressure air (25–40 bar) shapes the bottle in less than 3 seconds.
💡 Tech note: uneven heating causes uneven wall thickness.
How Is Output Defined in Water Bottle Blowing Machine?
Standard reference:
- 2 cavity automatic bottle blowing machine: 1600–2200 BPH
- 4 cavity: 3500–5000 BPH
- 6 cavity: 5500–7000 BPH
- Semi-automatic: 1300–1600 BPH
Main factors:
- Heating system
- Air recovery
- Mold cooling
- Preform quality
💡 Tech note: cooling takes about 40% of cycle time.
How to Choose Water Bottle Blowing Machine for Different Conditions?
- Hot regions need stronger cooling
- Humid regions need strong air dryers
- High output factories need automatic bottle blowing machine
- Small plants can use semi auto systems
💡 Tech note: humidity affects bottle clarity.
Core Systems of Water Bottle Blowing Machine
1. Air compressor system
Controls bottle strength.
2. Air dryer system
Removes moisture defects.
3. Water chiller system
Controls mold temperature.
4. Servo system
Reduces energy consumption.
💡 Tech note: energy saving mainly comes from servo control.
Mexico Customer Technical Upgrade Case
Customer Carlos used a basic plastic bottle moulding machine.
Issues:
- unstable 1800 BPH
- pressure fluctuation
- uneven bottle base
Upgrades:
- stable air compressor system
- cooling optimization
- heating zone tuning
Results:
- 4200 BPH output
- 30% scrap reduction
- 18% energy saving
Customer said:
“Line is stable now. No more pressure drops.”
💡 Tech note: most issues come from air system.
Water Bottle Blowing Machine FAQ
Moist air or weak dryer system.
Air pressure or heating imbalance.
Yes, due to controlled automation cycle.
Dry air + stable cooling.
About 8–12 years with maintenance.
The water bottle blowing machine is not about speed. It is about system engineering.
Key factors:
- air stability
- heating precision
- cooling efficiency
- preform quality
Stability always wins in long-term PET production.
