Does TPU tape contain fluorescence?

Recently we got a question from a customer: Does your TPU tape contain fluorescence? First of all, let’s talk about fluorescence. What is fluorescence? From Wikipedia, we find the definition: “ Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation”. Fluorescence transforms the invisible ultraviolet radiation that substance absorbs to purple blue fluorescence radiation. The purple blue fluorescence radiation is complementary to visible yellow light radiation, which transforms to white light and helps the substance looks white under sunlight.

TPU tape is made from TPU raw material through physical process. Many TPU tape in the market contains fluorescence, which has two sources. One source is TPU raw material while another is the process during manufacturing TPU tape. No matter adding fluorescence during the process of manufacturing TPU raw material or TPU tape will lead to fluorescence reaction of TPU tape. But we may don’t need to worry about it, because fluorescence is already stay with us everywhere.

Actually, there are natural fluorescence in the nature. It exists in bodies of jelly in the sea and glowworm on the land. These creatures give out light because of the fluorescence protein in bodies. Human-made fluorescence is widely used in various fields such as textile, paper, detergent, rubber, plastic, oil paint, etc. According to existent research results, there are no evidence to prove that fluorescence will do harm to human health. On contrast, some research announced that fluorescence CBS is water soluble, so that it can be removed naturally by the body soon.

Generally, many clothes contains fluorescence that accord with the national standard. Some high quality clothes may have no fluorescence. As garment accessory, TPU tape will be requested to avoid fluorescence. Here we recommend D Series and S Series mobilon tape. After test, these two types of tape don’t contain fluorescence and pass certificate Oeko-tex Standard 100 Annex 6, which means they can be used for baby clothes.