
The NB-500 semi automatic blow molding machine is designed for producing large-volume PET bottles from 3 to 5 liters. With a 1–2 cavity configuration, stable heating system, and compact structure, it delivers reliable output at a low investment cost, making it an ideal solution for edible oil, detergent, and household packaging manufacturers.
| Theoretical output | 400-800 Pcs/hr |
|---|---|
| Container volume | 3-5 L |
| Preform inner diameter | 28-48 mm |
| Cavity | 1-2 Pc |
High-efficiency solution for small & medium batch production
The NB-500 semi automatic PET blow molding machine is specially developed for large-volume bottle production ranging from 3L to 5L. Featuring a flexible 1–2 cavity mold design, it provides stable production capacity while maintaining consistent bottle shape and wall thickness.
Its compact and space-saving design allows installation in small workshops without complex infrastructure. The machine is equipped with a reliable heating system that ensures uniform preform heating, resulting in strong, transparent, and evenly formed bottles suitable for thick-wall applications.
Operation is simple and requires minimal labor, making it suitable for factories with limited manpower. Maintenance is easy, with straightforward daily inspection and servicing. With low initial investment and dependable performance, the NB-500 offers a cost-effective solution for small and medium batch production of large PET containers across various packaging industries.


Edible oil bottles (3–5L)
Detergent and cleaning product containers
Household chemical bottles
Industrial liquid containers
Large-volume PET packaging bottles
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Designed specifically for 3–5L PET bottle production.
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Small footprint suitable for workshops with limited space.
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Supports different production needs with adjustable cavity options.
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Low purchase and operating cost, ideal for small and medium enterprises.

What bottle sizes can the NB-500 produce?
The machine is designed for PET bottles with volumes from 3L to 5L.
How many cavities does the machine support?
The NB-500 supports 1 or 2 cavity mold configurations depending on production requirements.
Is the machine suitable for large-volume bottles with thick walls?
Yes. The stable heating system ensures even wall thickness and high bottle strength.
How many operators are required?
Usually 1–2 operators are sufficient for normal operation.
Is the NB-500 suitable for startups or small factories?
Yes. Its low investment cost and simple operation make it ideal for startups and small manufacturers.
Contact us now for a quotation or more detailed specifications
| Model No. | Unit | NB-500 |
| Theoretical output | Pcs/hr | 400-800 |
| Container volume | L | 3-5 |
| Preform inner diameter | mm | 24-48 |
| Max.bottle diameter | mm | 170 |
| Max.bottle height | mm | 380 |
| Cavity | Pc | 1-2 |
| Main machine size | M | 1.9×0.8×1.7 |
| Machine weight | T | 0.75 |
| Heater size | M | 2.1×0.7×1.38 |
| Heater weight | T | 0.35 |
| Max heating power | KW | 14 |
| Installation power | KW | 45 |