In the PET packaging industry, a PET moulding machine is a key system for plastic bottle manufacturing. It heats PET preforms and uses high-pressure air to stretch and form bottles.
It is widely used in beverage, water, edible oil, cosmetic, and pharmaceutical packaging.
For overseas buyers, the lowest price is not always the best choice. Production matching, energy use, bottle quality, and maintenance cost decide the real return. Many factories focus only on machine models. They ignore bottle size, preform weight, and production targets.
PET Moulding Machine Parameters
| 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 |
What Types of PET Moulding Machine Are Available?
PET moulding machines mainly include semi automatic and fully automatic models.
Semi automatic machines fit small and medium factories. They offer lower investment and easier maintenance.
Fully automatic machines suit continuous production. They complete preform feeding, heating, blowing, and bottle output automatically.
Tip: Define daily output before choosing the machine.
Examples:
- 5,000–20,000 bottles/day: semi automatic is often enough
- Above 20,000 bottles/day: automatic systems are better
- High-speed production: multi-cavity machines are preferred
How to Calculate PET Moulding Machine Output?
Output depends on cavity number, preform weight, and machine configuration.
For a 500ml PET bottle:
- Automatic 2 cavity: 1600–2200 bottles/hour
- Automatic 4 cavity: 3500–5000 bottles/hour
- Automatic 6 cavity: 5500–7000 bottles/hour
Basic models:
- 2 cavity: 1300–1600 bottles/hour
- 4 cavity: 2600–3000 bottles/hour
Actual output changes with preform weight.
For example, a 16g preform usually runs faster than a 20g preform because heating and cooling time are shorter.
Tip: Check real bottle production, not only maximum speed.
What Are the Main Systems of PET Moulding Machine?
A stable PET production system needs more than the main machine.
Heating System
Softens PET preforms. Stable temperature improves wall thickness.
High Pressure Air System
Forms the bottle shape. Low pressure creates poor bottle bottoms.
Cooling System
Controls mold temperature. Stable cooling reduces deformation.
Servo Control System
Advanced systems reduce air and power consumption.
Which Industries Use PET Moulding Machine?
PET packaging serves many industries.
Beverage Industry
Applications:
- Water bottles
- Juice bottles
- Carbonated drink bottles
Focus: clarity and speed.
Edible Oil Industry
Applications:
- 1L oil bottles
- 5L containers
Focus: bottle strength.
Cosmetic Industry
Applications:
- Shampoo bottles
- Detergent bottles
- Cosmetic packaging
Focus: appearance.
Pharmaceutical Industry
Applications:
- Medicine bottles
- Health product containers
Focus: clean production.
Tip: Different products need different mold designs.
What Is the Difference Between PET Moulding Machine and Other Blow Machines?
Common terms include:
- water bottle blowing machine
- plastic bottle moulding machine
- bottle blow molding machine
These names often confuse buyers.
A PET moulding machine mainly focuses on PET bottle forming.
Before purchase, confirm:
- Material type
- Bottle size
- Cavity number
- Output target
Customer Case: Mexico Beverage Factory Improved Production
A Mexico customer named Carlos used an old semi automatic system for 500ml water bottles.
Problems:
- About 1500 bottles/hour
- Too much manual work
- Poor consistency
Based on his target of 30,000 bottles per day, we suggested a four-cavity PET moulding machine.
We also improved:
- Air compressor setup
- Cooling circulation
- Heating parameters
After upgrading:
- Output reached 4200 bottles/hour
- Scrap reduced about 25%
- Less labor was needed
PET Moulding Machine FAQ
It can produce water bottles, beverage bottles, oil bottles, cosmetic bottles, and medical bottles.
Yes, with proper configuration.
For around 3000 pieces/day of 500ml and 5L bottles, a semi automatic single-cavity 5L machine can work with two extra small cylinders for 500ml bottles.
The reason is simple. A large cylinder for 5L bottles cannot properly blow 500ml bottles.
Usually:
Air compressor
Air dryer
Water chiller
These systems affect bottle quality.
The key is choosing the right cavity number, reducing air consumption, and improving quality rate.
