These small rectangular blocks of shade on the backside of toothpaste tubes, typically known as “eye marks,” “shade marks,” or technically “eye-mark sensors,” are usually not meant for customers. They’re used within the manufacturing course of to information sensors that management the place the tube is minimize and sealed throughout manufacturing. These marks guarantee constant sealing and trimming, leading to uniformly packaged merchandise.
Constant placement of those marks is important for environment friendly and high-speed automated manufacturing. With out them, the method can be significantly slower and extra susceptible to errors, resulting in potential leakage, inconsistent fill ranges, and elevated manufacturing prices. This automated course of has turn out to be a normal within the trade, enabling large-scale manufacturing of toothpaste and different tube-packaged merchandise.
