Eliminates vertical wrinkles that occur on a running web. By pinching both ends of the web with rollers and making an angle to the direction of travel, a force is generated that spreads the web outward. Besides the standard length of 100mm, 50mm and 150mm rollers are also available. The roller material can also be changed to fluorine rubber, silicon rubber, etc. Various models are available according to the type of web and installation location.