US Patent 9901479 External nasal dilator and methods

Aspects of the present invention relate to methods of making an external nasal dilator amenable to continuous and automated manufacture. For example, in one embodiment of the method, a roll of a three-layered material is used as the starting material, the three layers consisting substantially and respectively of (1) a resilient sheet, (2) an adhesive-protecting sheet, and (3) an adhesive layer between the resilient sheet and the adhesive-protecting sheet. A series of dies are used to cut the three-layered material into the appropriate shape and (when necessary) to impress grooves in the resilient sheet.