Loops on the shirt
The shirt loops on button-down shirts have now become a classic identifying feature. The loops originated on ships, more precisely in the Navy. Back then, space on ships was very limited and there was no room for closets or the like. To keep uniforms crease-free, shirts were hung on the back loop. It wasn’t until much later that the hanging loop was added to the collar. A really interesting purpose, isn’t it?
Loops on the shirt
The squares on the tube seam
The small squares on the tube seam of the toothpaste actually have a meaning and a purpose. During tube production, the squares help the machine to recognize where the tubes need to be folded and cut. This is not only the case for toothpaste tubes, but also for many other products. Incidentally, manufacturers now often print a QR code next to the square. This code encodes a product or margin number that is important to the manufacturer.
The squares on the tube fold