3D Check Technology Achieves 100% Detection of Label Quality

With the community's diverse needs of types of printing and the increasing demand for print quality requirements, development and application of new printing technology, printing technology, printing equipment already in full swing, with each passing day, based on automated machine vision technology, intelligent quality label The detection system is the product of this demand.

After several years of market cultivation and product application, the label quality inspection system has been understood by more and more label printing companies, and has been applied by many label printing companies with certain production scale and strategic vision. Compared with manual inspection, the greatest advantage lies in the high coverage of product quality detection, and the risk of missed detection is very low. Because the label quality inspection system photographs each product and passes the image processing system to judge the passing of the product, the detection is stable. High sex, avoiding manual detection due to inspectors not accurately grasping quality judgment standards and eye fatigue caused by inconsistent and inconsistent inspection standards. The detection speed of the label quality detection system is also much higher than the speed of manual detection, which is generally 1-3 times that of manual detection.

Of course, the label quality inspection system, like other advanced printing equipment, has its unique technical advantages on the one hand, and it also inevitably has certain defects on the other. It is itself in constant development, continuous improvement and improvement. Its inherent weakness is that defect detection coverage cannot reach 100%. Because quality inspection personnel can observe the label from multiple angles, the visual inspection system can only photograph from a fixed angle, so for some defects that require special methods to observe Such as very shallow scratches, small bubbles, and slight overflow of glue, etc. This has also led to the retention of a large number of quality inspectors in industries with high quality requirements such as electronic tags, which cannot be fully automated.

Since 2007, Lingyun Company has provided LabelCheck-A, a label quality inspection system based on machine vision technology, to the label industry. The detection resolution has approached the limit of human eye observation capability (0.016 degrees), and the high-speed automatic image processing system has been used to realize labeling. Color defects, breaks, dirty spots, foreign objects, leaks, misalignment, and poor die-cutting are 100% detected. The LabelCheck-B system introduced in 2008, based on the ability to retain conventional defect detection capabilities, has increased the ability to detect the film on the label and can detect large areas such as air bubbles and wrinkles, but for smaller areas Defects such as glue, glue, and scratches cannot be reliably detected. A common feature of defects such as air bubbles, spilled glue, and scratches is that it is transparent in itself. The defect form is characterized by the unevenness of the surface of the product and is a three-dimensional solid defect rather than a chromatic aberration like a print defect. Traditional vision systems are based on color differences and have no ability to detect 3D defects.

In 2010, based on the LabelCheck-B system, Lingyun again upgraded its label quality inspection system and added 3DCheck detection capabilities for 3D defects. That is, in addition to the original inspection capabilities of LabelCheck-A and LabelCheck-B, the 3DCheck detection function can accurately image a variety of three-dimensional defects. As long as there are any irregularities on the surface of the label, 3DCheck can take photos and detect them. The omni-directional detection of labels covers 100% of the defects that may appear on the labels.

The machine vision automated label quality inspection system achieves total assurance of product quality through 100% product coverage and stable quality inspection capabilities. The new label inspection system is clear and accurate for all types of human-visible defects and ensures the detection of the product after the test. 100% reliable quality. We are convinced that with the further optimization of 3DChenk's technology, along with the society's increasingly stringent requirements on the quality of labels, as well as shorter and shorter delivery deadlines, higher and higher labor costs and higher and higher finished product rejection rates. Pressure, machine vision automation, and intelligent label quality inspection systems will surely be accepted by more label printing companies and will be used more and more widely. The inspection system can not only further improve the quality management level of label manufacturing enterprises, increase production efficiency, reduce the scrap rate of finished products, reduce labor costs, provide powerful help for enterprises to grasp opportunities in fierce market competition, but also help label manufacturers It will increase its influence and competitiveness, win more customers, occupy a larger market share, keep pace with the times, and maintain its strategic advantages over the long term.