N95 mask nose strips can be divided into hot melt glue nose strips and 3M glue nose strips, so what is the difference between these two nose bridge strips?

In terms of output: the nose bridge of the mask with hot melt adhesive on the back has a higher output than the 3m adhesive.

Convenience of the upper strip: The purpose of attaching hot melt glue is to facilitate the adhesion between the mask and the aluminum strip. The same is true for straps with 3m glue, but the operation is more complicated than the process with hot melt glue. With hot melt glue, only a mask nose bridge welding machine is needed, and the mask can be perfectly combined with the aluminum strip by operation, in one step. The 3M glue has to manually tear off the bottom paper, which is more troublesome.