NOZZLE HAVING GUIDE GROOVE

摘要

The present invention relates to a nozzle having a guide groove. The nozzle composed of a nozzle tube and a nozzle tip injects a coating solution. A spiral guide or straight guide groove is formed on the inner surface of the end part of the nozzle tube in contact with the nozzle tip, thereby preventing the coating solution from being unnecessarily stacked on the inside of the nozzle. Also, the injection speed of the coating solution can be precisely controlled.