A complete inspection of empty bottles should include equipment with efficient optical detection modules to cover all bases, X-ray strobes for maximum detection reliability and a high degree of automation.  Below are a few things manufacturers should consider when implementing an empty bottle inspection procedure on the bottling plant.

Base Inspection

In empty bottles, base inspection is conducted to search for any chips, cracks, broken glass and fractures in the product, even the barely visible faults.

Pulsed X-ray technology assists in identifying these liabilities with extreme accuracy. Unlike conventional X-ray scanners, the radiation is only emitted when the product is examined in the inspection area. Thus the product’s exposure to radiation is minimised.

Optical base inspection detects low-density foreign objects trapped inside the bottle, from cigarette ends to insects. There are two things to consider in an optical process: the degree of illumination in the product area, which should be without any reflection and shadows, and the positioning and performance of the cameras. High-performance cameras should make even transparent and reflecting faults visible.

Finish, thread and sidewall inspection

Manufacturers should keep in mind any faults that could endanger product safety. For example, defects and cracks at the tip of the bottles should be thoroughly carried in any empty bottle inspection process worth its salt.

A proper finish and thread inspection will look out for any defects, cracks, rust, and dirt on the bottle itself by using advanced optical technology. The inspection should fully cover the bottle tip, the sealing surface, and the whole thread area. An overall inspection that includes sidewall detection is advisable before the filling process begins.

Residual liquid detection

Residual liquid detection is a must-have procedure when carrying an overall empty bottle inspection to avoid product contamination inside and around the bottle. Varnish, caustic lye or oil can seriously threaten the product safety.

A proper system can detect and remove the hazards before the filling process, by using high-frequency technology to detect lye and infrared sensors to track down varnish and oil particles.

Did you know? The HEUFT reflexx² image processing system combines and analyses the detection pictures in real time, differentiates between container structures and real faults, and implements a specific teaching in the procedure.

Thanks to our partner Heuft, Plastic and Chemical Trading offers specialised solutions tailor-made for the packaging industry, including empty bottle inspection containers for bottling plants.

The HEUFT InLine II IXS,  based on the HEUFT SPECTRUMII technology, is equipped with highly efficient optical detection modules and X-ray strobes for all-around inspection of empty bottles.  Its high degree of automation and its self-explanatory user guidance make error-free operation easy. It can service up to 72,000 empty bottles per hour, with a false rejection rate under 0,03% during the inspection process.

Speak to our consultants at Plastic and Chemical Trading about our range of empty bottle inspection machinery.