The Secret Behind the Coloured mark at the bottom of Toothpaste Tubes..
The coloured bar at the bottom of a toothpaste tube is a special mark that tells the computer controlled production equipment to cut the tube at a certain point.
This can be confirmed by visiting the Color Mark and Registration Detection page at Banner Engineering
The following are examples of other comments/variations on these toothpaste tube marks;
Try to choose green and blue, there are four kinds:
Blue : Natural + Medicine;
Red : Natural + Chemical composition;
Black : pure chemical.
Red : some natural ,but most chemicals
Black : Only chemicals
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