Method and device for spiral spray coating

摘要

A spiral spray coating method, comprising the step of forming a second pressurizing air flow which is discharged from a number of second pressurizing air holes (13) positioned concentrically with and outwardly-shaped from first pressurizing air holes (12), on the outside of the first pressurizing air flow which is discharged from a number of first pressurizing air holes (12) disposed concentrically with an opening of an adhesive agent hole (11) so as to feed the second pressurizing air flow (K2) to the outside of the first pressurizing air flow (K1) in order to form an air curtain of the second pressurizing air flow on the outside of a spiral of a hot-melt adhesive agent fiber; a spiral spray coating apparatus using the spiral spray coating method.