HOT MELT ADHESIVE AGENT SPRAY-COATING METHOD AND COATING NOZZLE DEVICE OF HOT MELT ADHESIVE AGENT SPRAY-COATING DEVICE

摘要

A hot melt adhesive agent spray-coating method, comprising the steps of forming a large number of hot melt adhesive agent holes of a square shape in cross section parallel with each other in the transverse direction of a coating line, forming a large number of pressurized air holes on the front and rear sides of the hot melt adhesive agent holes with the center parts of the openings thereof positioned adjacent to each other to form the large number of pressurized air holes on the front and rear sides of the large number of hot melt adhesive agent holes in the transverse direction of the coating line, allowing slit air flows formed in the pressurized air jetted from the nozzle bottom face openings of the pressurized air holes to act on the front and rear sides of a hot melt adhesive agent beat of a square shape in cross section, and lowering the hot melt adhesive agent beat with the hot melt adhesive agent beat held by the pair of front and rear slit air flows in a sandwiched state.