Automatic Online Bottle Leak Tester For Blow Molding & Packaging Production

This equipment utilizes industry-leading, high-precision pressure drop detection technology and can be directly integrated into existing blow molding, injection molding, or filling production lines. Without affecting production speed, the equipment performs real-time, non-destructive leak testing on every container that passes through. With a response time measured in milliseconds, it accurately rejects defective products with flaws such as microscopic pinholes, cracks, uneven bottle mouths, or localized thin spots, making it the ideal choice for modern industrial enterprises seeking to achieve “zero-defect packaging” and “unmanned production lines.”
This fully automatic in-line plastic bottle leak detector is a conveyor-based leak testing system developed specifically for PET/PE/PP hollow blow-molded containers. Utilizing the positive-pressure air decay detection principle and integrated with a conveyor line, it enables continuous, automated leak testing of empty bottles and can be directly integrated into existing blow molding, injection molding, or filling production lines. Without affecting production speed, the equipment performs real-time, non-destructive leak testing on every container as it passes through. It is widely applicable for container quality inspection in the beverage, personal care, and chemical packaging industries.
The equipment integrates a touchscreen PLC control system, precision pressure sensors, an independent air storage and pressure stabilization unit, and an automatic conveying and positioning mechanism. Featuring a modular design, it allows for easy adjustment to different bottle specifications and supports online testing of all types of plastic containers, ranging from small-capacity reagent vials to large-capacity chemical drums.

Applicable Materials: 

HDPE, LDPE, PET, PP, PVC, etc.

Applicable Industries:

Beverage Industry: Mineral water bottles, beverage bottles, juice bottles, cooking oil bottles
Personal Care Industry: Laundry detergent bottles, disinfectant bottles, cosmetic refill bottles, plastic buckets for hair and body care products
Chemical Industry: Antifreeze containers, motor oil bottles, small chemical packaging drums

• Fully Automatic In-Line Inspection
  Integrated with conveyor lines for continuous operation, eliminating the need for manual handling of workpieces. Loading, inspection, and sorting are fully automated, significantly reducing labor costs and making it ideal for high-volume production on assembly lines.
• Dual-Station Synchronous Inspection
  Two inspection heads operate simultaneously, allowing two products to be inspected in a single pass. This doubles inspection efficiency and increases production capacity, making it suitable for medium- to high-speed blow molding and injection molding production lines.
• High-Precision, Stable Leak Detection
  Dual pressure gauges monitor inflation and inspection pressures in real time. Pressure, hold time, and leak thresholds are digitally adjustable, enabling precise detection of even the smallest leaks. Inspection results are stable, with an extremely low false-positive rate.
• Convenient Changeovers and High Versatility
  The aluminum profile modular structure allows for manual adjustment of the downward pressure height and the spacing between inspection stations. By simply replacing the sealing fixtures, the system can accommodate plastic bottles and hollow containers of varying heights and diameters, making changeovers and setup straightforward.
• Intelligent Data Management
  The touchscreen displays the number of good and defective products as well as leak curves in real time. Production and testing data are automatically stored and can be exported for traceability, facilitating quality control.
• Durable and Easy to Maintain
  Standardized pneumatic components and an aluminum profile frame ensure that spare parts are interchangeable and easy to source. The clear layout of piping simplifies daily cleaning and maintenance, making the system suitable for 24-hour continuous production in a factory setting.

The overall product quality has traceability, and the product quality warranty period is 1 year, calculated from the date of equipment acceptance.

Free maintenance during the warranty period, with corresponding travel and material costs charged for after-sales service exceeding the warranty period.

Daily operation and maintenance services: Our company provides free remote operation and maintenance online services in Pinchi Tech AI cloud platform, particularly for system updating, algorithm setting, software adjustment, etc.