The following are key product characteristics you should consider when purchasing a blow molding machine:

1. Core Production Performance Parameters

A. Capacity (Output)

Hourly/Daily Output (Bottles/Hour): Determine the required capacity based on your production plan and market demand.

B. Number of Mold Cavities: Single-cavity, double-cavity, or multi-cavity, directly affecting output.

C. Production Cycle Time: The total time from heating to bottle blowing completion; shorter times mean higher efficiency.

D. Applicable Bottle Types and Capacities

Bottle Type Compatibility: Does it support round bottles, square bottles, irregularly shaped bottles, etc.?

Capacity Range: For example, 50ml–2L, ensuring coverage of all specifications you plan to produce.

E. Raw Material Compatibility

Supported Plastic Materials: Primarily PET; does it support recycled materials (RPET) and specially modified materials?

F. Raw Material Drying and Conveying System: Is it integrated or requires external components?

2. Equipment Technology and Automation Level

A. Control System

PLC Brand: Such as Siemens, Omron, etc., affecting stability and maintenance.

Human Machine Interface (HMI): Is it a touchscreen? Is the operation intuitive?

B. Automation Level: Fully automatic, semi-automatic.

C. Heating System

Infrared Heating Method: Lamp layout, zone control accuracy, energy efficiency.

Preheating and Stretching Technology: Does it employ advanced stepping heating or dynamic adjustment technology?

D. Blow Molding Process

Stretching Method: Servo stretching vs. pneumatic stretching, affecting bottle uniformity.

High-Pressure Blowing System: Pressure control accuracy, affecting bottle wall thickness consistency.

E. Mold System

Mold Change Convenience: Does it support Quick Changeover (QDC)?

Mold Cooling System: Water cooling or air cooling, affecting production efficiency and bottle quality.

3. Quality and Stability

A. Finished Product Qualification Rate: Scrap rate when the equipment is running stably (usually below 1-3%).

B. Whether it has automatic detection and rejection functions.

C. Bottle Quality Control: Bottle wall thickness uniformity, compressive strength, sealing performance, etc.

Whether it is equipped with an online quality monitoring system.

D. Equipment Stability and Durability: Brand of key components (e.g., cylinders, motors, sensors).

Material of the overall machine structure (e.g., stainless steel frame).

4. Energy Consumption and Operating Costs

A. Energy Consumption Indicators: Electricity consumption (kW/h), compressed air consumption (Nm³/min).

Whether it has an energy-saving mode or frequency converter control.

B. Maintenance and Upkeep: Difficulty of daily maintenance, replacement cycle and cost of vulnerable parts.

Whether the supplier provides remote diagnostics or preventative maintenance services.

5.Safety and Compliance

A. Safety Protection: Whether it is equipped with safety door locks, emergency stop buttons, light curtains, etc.

Compliant with international safety standards such as CE and ISO.

B. Environmental Requirements

Do noise levels and exhaust emissions (if any) comply with local regulations?

6. After-Sales Service and Support

A. Installation and Training

Is on-site installation, commissioning, and operation training provided?

B. Technical Support

Response time, spare parts supply speed, and availability of a local service team?

C. Warranty Period

Warranty period for the entire machine and key components.

7. Expandability and Future Upgrades

A. Does it support future increases in the number of mold cavities or connection to automated production lines (such as bottle unscramblers and filling machines)?

B. Does the control system have upgrade potential?