related to the type of plastic and the printing process.
The stripe is a product of the color code system used in the automated production of toothpaste. The color stripe you see is created during the sealing and extrusion process—the method by which the tube is filled with toothpaste and sealed. The stripe is essentially a guide mark for the machinery, helping workers or the machine itself determine the proper alignment during the tube filling process. It can also indicate the type of material used for the tube’s construction.
Myth
