PET Bottle Blowing Machine-Zhangjiagang Grandee Machinery Co., Ltd.

For 500ml PET bottles, the output speed typically ranges from 1000 to 18000 BPH, which is influenced by:
· Cavity number
· Cycle time (including pre-blow, high-pressure blow, and exhaust)
· Cooling efficiency
· Preform quality and heating profile

The bottle blowing machine covers PET bottle 200ml to 10L, but the cavity configuration will vary by size:
· ≤ 2L: multi-cavity (e.g., 4–8 cavities) for high output
· 2L – 5L: typically 2 cavities
· 5L – 10L: single cavity due to larger parison and longer cooling time.
"The volume range from 200ml to 10L is supported, but please note that different bottle sizes require dedicated molds, and the stretch rod stroke may need adjustment accordingly.

The changeover time depends on the bottle size and mold weight:
· Small bottles (≤ 2L): approximately 15–30 minutes for a complete mold set change
· Large bottles (2L–10L): approximately 30–60 minutes due to heavier mold halves and larger blow pins
This includes mechanical installation, water line connections, and basic parameter reloading.
With our quick-change mold system, the changeover for a 500ml to 2L mold can be completed within 20 minutes. For larger molds up to 10L, it takes around 45 minutes. We can also provide mold pre-heating stations to reduce warm-up time.

The PET blow molding machine operates on two separate air circuits:
· High-pressure blowing air: 30–40 bar (depending on bottle size and preform thickness)
· Low-pressure utility air: 8–10 bar for cylinder actuation, pre-blow, and valve control
Both must be oil-free, dry, and filtered to 0.01 micron to ensure consistent bottle quality.

Energy consumption for 500 ml PET bottles:
‑ Semi‑auto machine: 12‑16 kWh per 1000 bottles
‑ Standard automatic linear blow molding machine: 6‑11 kWh per 1000 bottles
‑ High‑speed servo energy‑saving model: 3.2‑4.5 kWh per 1000 bottles
Note: Data only for blow machine main unit, chiller & air compressor not included.

For a fixed-pitch 6-cavity PET blow molding machine, the price typically ranges from USD 38,000 to USD 52,000, depending on configuration. A standard setup for 500ml–2L bottles with basic automation and CE certification would be on the lower end, while a heavy-duty version for 5L–10L bottles with full servo control and quick-mold-change system would be on the higher end.
Please send us your bottle drawing and preform specifications so we can propose the most cost-effective solution for your specific needs.

Yes, we offer bottle molds in a broad range of shapes and sizes. We support both standard neck finishes (e.g., PCO 1810, 1881, 38mm) and custom body designs, from round and square to oval and asymmetrical profiles. We can also develop molds based on your 3D drawings or sample bottle.