double——deck tape / tape

It is inconvenient to look for the beginning of the adhesive tape and cut it again and again. The adhesive tape was overlaid each other to reduce cutting times. For example, we shall stick with the four corner when we post a paper on the wall, we have to look for the beginning and cut the tape four times, while we just do this twice when we use a bilayer tape.On the other hand, we designed red area on the flanks of the tape without glue. It is easy to find out the beginning of the tape and tear it down.