These small rectangular blocks of coloration on the backside of toothpaste tubes, typically known as “eye marks,” “coloration marks,” or technically “eye-mark sensors,” aren’t 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 crucial for environment friendly and high-speed automated manufacturing. With out them, the method could be significantly slower and extra vulnerable to errors, resulting in potential leakage, inconsistent fill ranges, and elevated manufacturing prices. This automated course of has turn out to be a typical within the trade, enabling large-scale manufacturing of toothpaste and different tube-packaged merchandise.
