Mineral water. Juice. Shampoo. Medicine. All these products need bottles. A PET bottle molding machine makes them all. Heat the preform. Blow with high pressure. Cool the bottle. One machine produces thousands of bottles per hour. For beverage plants and packaging factories, our PET bottle molding machine delivers consistent quality and high output.
YG Machinery offers reliable PET bottle molding machines for beverage, cosmetic, and pharmaceutical packaging.
What Is a PET Bottle Molding Machine?
A PET bottle molding machine is a blow molding device that heats PET preforms and blows them into finished bottles using high-pressure air. The machine handles the entire process from preform heating to bottle ejection. It is the core equipment for producing plastic bottles for beverages, cosmetics, and pharmaceuticals.
Suitable for:
- Mineral water bottles
- Carbonated beverage bottles
- Juice bottles
- Cosmetic bottles (shampoo, lotion)
- Pharmaceutical bottles
- Edible oil bottles
- Seasoning bottles (soy sauce, vinegar)
Advantages:
- 2000-9000 bottles per hour output
- 2, 4, 6, 8 cavity options
- 0.1L to 2L bottle capacity
- Fully automatic operation
- Siemens servo control system
- Scrap rate ≤0.2%
- CE certified
Technical Parameters of PET Bottle Molding Machine
| Parameter | YG-2L-2 | YG-2L-4 | YG-2L-6 | YG-2L-8 |
| Cavity | 2 | 4 | 6 | 8 |
| Theoretical output (PCS/H) | 2000-2700 | 4000-5000 | 6000-7200 | 8500-9000 |
| Max volume | 2L | 2L | 2L | 2L |
| Max bottle diameter | 100mm | 100mm | 100mm | 100mm |
| Max bottle height | 330mm | 330mm | 330mm | 330mm |
| Max neck outer diameter | 80mm | 38mm | 38mm | 38mm |
| Light tube quantity | 16pcs | 40pcs | 64pcs | 32pcs |
| Max heating power | 24KW | 40KW | 80KW | 80KW |
| Blowing pressure | 25-35kg/c㎡ | 25-35kg/c㎡ | 25-35kg/c㎡ | 25-35kg/c㎡ |
| Machine weight | 2.0T | 4.0T | 5.5T | 6.0T |
| Machine dimensions (m) | 2.5×1.6×1.7 | 4.5×2.0×2.3 | 6.5×2.0×1.9 | 6.7×2.0×2.3 |
All models feature Siemens servo system, PLC control, and automatic fault detection.
Main Structure of PET Bottle Molding Machine
A PET bottle molding machine has several main parts:
Preform feeding system – Feeds preforms into the machine. Handles preforms automatically.
Heating system – Infrared lamps heat preforms to the correct temperature. Adjustable heating for different bottle sizes.
Blow molding system – High-pressure air inflates heated preforms into bottle shapes. 25-35kg/c㎡ pressure.
Mold system – Shapes the bottle. Interchangeable molds for different bottle designs.
Cooling system – Cools the finished bottle before ejection.
Control system – Siemens servo system and PLC. Man-machine interface for easy operation.
Ejection system – Removes finished bottles from the mold. Transfers to conveyor.
Automatic alarm system – Detects faults automatically. Scrap rate ≤0.2%.
Working Principle of PET Blow Molding Machine
Step 1: Preform Feeding
Preforms are loaded into the feeding system. The machine feeds them into the heating section automatically.
Step 2: Heating
Preforms pass through infrared heating ovens. The body of the preform is heated to the correct temperature. The neck stays cool to maintain shape.
Step 3: Transfer
Heated preforms are transferred to the blow molding station. The transfer is automatic and precise.
Step 4: Blow Molding
High-pressure air (25-35kg/c㎡) is blown into the preform. The preform expands to match the mold shape. The bottle takes its final form.
Step 5: Cooling
The molded bottle is cooled inside the mold. Cooling ensures proper bottle shape and strength.
Step 6: Ejection
The mold opens. The finished bottle is ejected. It moves to the conveyor for packaging or filling.
Step 7: Repeat
The cycle repeats automatically. Continuous production.
The entire process is fully automatic. One machine runs continuously with minimal operator intervention.
Application of Plastic Bottle Making Machine
Mineral water plants – Produce standard water bottles in various sizes. High volume, consistent quality.
Beverage factories – Carbonated drinks, juices, and sports drinks. Bottles need pressure resistance.
Cosmetic packaging – Shampoo, lotion, and skincare bottles. Different shapes and sizes.
Pharmaceutical packaging – Medicine bottles. Clean and precise production required.
Edible oil packaging – Oil bottles in various capacities. PET material is food-safe.
Seasoning producers – Soy sauce, vinegar, and cooking oil bottles.
5-gallon water producers – Large bottles for water dispensers. Specialized blowing machines available.
Customer Case – Mineral Water Plant Expansion
A mineral water plant in Southeast Asia supplied 500ml and 1L bottles to local supermarkets. Demand grew rapidly during the dry season. The existing semi-automatic machine could not keep up. Production was limited to 1500 bottles per hour. Overtime shifts were common.
The plant purchased a YG-2L-8 PET bottle molding machine. The 8-cavity machine produces 8500-9000 bottles per hour. Fully automatic operation. One operator manages the entire process.
Results after installation:
- Production increased from 1,500 to 8,500 bottles/hour – 466% increase
- Labor reduced from 3 operators to 1 operator
- Scrap rate dropped from 1.5% to under 0.2%
- Overtime shifts eliminated
- New product lines added (1.5L bottles)
The production manager said: “The YG PET bottle molding machine transformed our production. We now produce in one shift what used to take three shifts. The quality is consistent. We are adding a second machine next year.”
FAQ
Q: How many cavities are available?
A: 2, 4, 6, and 8 cavities. Choose based on your output needs.
Q: What is the maximum bottle capacity?
A: 2 liters. Larger sizes available with different models.
Q: How many bottles per hour?
A: 2000-2700 (2-cavity) to 8500-9000 (8-cavity).
Q: Is the machine fully automatic?
A: Yes. The YG-2L series is fully automatic. Preform feeding, heating, blowing, and ejection are all automated.
Q: What materials does it process?
A: PET, PP, and PC. PET is the most common.
Q: What is the scrap rate?
A: ≤0.2%. Very low material waste.
Q: Does it require a preform injection machine?
A: Yes. Preforms must be made separately using a preform injection molding machine.
Q: What is the warranty?
A: One-year warranty on manufacturing defects. Technical support included.
Q: Where can I buy a PET bottle molding machine?
A: YG Machinery sells directly from our factory. Contact us for a quote.
Why Choose YG PET Bottle Molding Machine
YG has been manufacturing PET bottle molding machines for many years. Our machines feature Siemens servo systems, PLC control, and high-pressure gas recovery technology. Each machine is tested before shipping.
Why customers choose YG:
- 2, 4, 6, 8 cavity options – choose the right output for your plant
- 2000-9000 bottles/hour – meets high-volume production needs
- 0.1L to 2L capacity – flexible for different bottle sizes
- Scrap rate ≤0.2% – low material waste
- CE certified – compliant for international export
- Custom molds available – we design molds for your bottle specifications
- High-pressure gas recovery – saves 15% on gas consumption
- 24/7 technical support – we help with installation and training
YG PET bottle molding machines have been exported to Southeast Asia, the Middle East, Africa, and South America. Customers choose YG for quality, reliability, and value.
