If recycled glass or PET bottles skip pre-inspection, irregular bottles with deformation, incorrect dimensions or abnormal contours entering the bottle washer are highly likely to get stuck in spray rails, washing grippers and bottle infeed & outfeed channels. This will trigger equipment faults such as bottle jamming, line blockage, deformed grippers and damaged spray pipes. Frequent downtime for clearing jams severely disrupts continuous production of the whole line.

The pre-inspection unit intercepts all defective irregular bottles in advance, ensuring highly consistent bottle specifications feeding into the bottle washer. It delivers smooth and stable equipment operation, cuts mechanical wear and maintenance frequency, reduces auxiliary production material costs and effectively improves the overall line OEE.
This inspection machine is designed for high-volume returnable bottle production lines. Its inspection speed matches the conveyor throughput, featuring fully automatic non-contact identification without manual visual sorting. Inspection data is synchronised in real time, and defective bottles are automatically rejected instantly with stable detection precision and high recognition efficiency.
Detection parameters can be flexibly adjusted according to the bottle types produced by manufacturers. A single machine fulfils pre-inspection requirements for multiple types of returnable bottles, suitable for manufacturers of all scales including recycling processing plants and large beverage factories with self-owned bottle recycling lines.
Inspection capacity: 72,000 BPH.

 Irregular Bottle Sorting (Color, Height and Other Parameters)

 Capped Bottle Inspection

 Bottle Mouth Inspection

Equipped with 2 high-precision industrial CCD cameras and maintenance-free high-intensity color LED light sources, the system conducts all-round inspection of bottle body dimensions. It is compatible with bottles of all colors including green, brown and transparent. The inspection tolerance for bottle height and width is controlled within ±5 mm, effectively preventing irregular bottles with minor dimensional deviations from entering downstream production lines, with an inspection accuracy of 99.9%.

In addition, it can detect whether empty bottles still carry caps; any bottles with unremoved caps will be automatically rejected. The detection accuracy for capped bottles reaches 100%.

One high-precision color industrial camera is deployed to inspect glass bottle mouths. It can accurately identify dirt, surface defects and inner defects on bottle necks with an inspection accuracy of 99.9%.

 High inspection accuracy and high throughput

 Hygienic design constructed from grade 304 stainless steel