Introduction to Jinan Maotong PET Cap, Liquid Level, Coding & Label AI Inspection Equipment

Jinan Maotong Inspection Equipment Co., Ltd., formerly known as Maotong Technology (Beijing) Co., Ltd., is a National High-Tech Enterprise founded by pioneer practitioners of machine vision technology in China. Since 2006, the company has focused on machine vision and automated inline inspection. Headquartered at Zhihuiling Intelligent Manufacturing Technology City, Licheng District, Jinan, Shandong Province, the company's PET Cap, Liquid Level, Coding & Label AI Inspection Equipment serves as the flagship model of its PET Bottle Whole-Line Inspection product center, providing one-stop quality control for PET bottled products across industries such as beverages, bottled water, beer, condiments, pharmaceuticals, and daily chemicals.

I. Integrated Inspection Covering Six Quality Dimensions

The equipment deploys high-resolution industrial cameras and intelligent sensors at critical PET bottle quality control nodes, delivering highly integrated inspection functions:

• Preform Finish Inspection: Internal defects, external defects, point defects, through-cracks, and finish deformation (out-of-roundness);

• Cap & Liquid Level Inspection: High cap, skewed cap, missing cap, broken tamper-evident band, and under-fill;

• Coding Inspection: Code presence and partial code missing;

• Label Inspection: High label, low label, missing label, damaged label, splice label, and label Logo;

• Cap Artwork Inspection: Logo detection and color detection.

Through the above multi-dimensional synchronous inspection, the equipment comprehensively intercepts various appearance and filling defects that occur during PET bottle production.

II. Technical Principle & Core Advantages

The equipment adopts non-contact inline inspection: as a PET bottle passes the positioning sensor, the control unit records the bottle ID and encoder signal, triggering a high-resolution digital camera to capture images. An image processor analyzes these images in real time using machine vision algorithms, dynamically displaying results on the HMI while transmitting reject signals to the control unit, which drives the rejection mechanism to precisely eject defective bottles.

Key performance advantages include:

• High-Speed Inspection: Inspection speed up to 90,000 bottles/hour, seamlessly integrating with high-speed filling lines;

• High-Precision Recognition: Identifies micron-level seal defects, 0.5mm liquid level deviations, and blurred codes;

• 24/7 Continuous Operation: Meets large-scale continuous production demands while reducing downtime;

• Anti-Interference Design: Adapts to complex conditions such as transparent/translucent PET bottles, reflective liquid surfaces, and bubble interference;

• Intelligent Switchover: Supports inspection template import via USB drive, enabling product changeover without programming—ideal for multi-SKU, small-batch contract manufacturing;

• Data Traceability: Automatically stores photos of defective products, with customizable retention periods.

III. Application Value & Customer Base

The equipment is widely deployed in PET bottling lines across beverages, bottled water, beer, condiments, pharmaceuticals, and daily chemicals. The company serves over 200 customers throughout most Chinese provinces and exports to more than ten countries and regions including India, Malaysia, Indonesia, Iran, Mozambique, Tanzania, Mali, Australia, South Korea, Bolivia, Russia, and Hong Kong, China, having earned an excellent reputation and a substantial client base in the beer, beverage, and condiment industries.

With its design philosophy integrating "machine inspection software + automated control + HMI," Jinan Maotong's PET Cap, Liquid Level, Coding & Label AI Inspection Equipment provides customers with a cost-effective, highly mature PET bottle whole-line quality control solution, helping clients achieve the quality goal of "zero-defect" outgoing products.