| 摘要 |
An aerosol sprayhead assembly (7, 63, 79, 97) which includes an elongate nozzle opening (13, 77, 91, 113) aligned with and centered in an elongate groove (51) in the exit face (59, 61) of the spray tip (47) and a restriction (41, 73, 93, 103) in the material flow path is used to provide a fan-shaped spray pattern of soluble elastomeric adhesive polymers in solution with a propellant at higher adhesive solids levels than obtainable using conventional aerosol sprayheads. In one embodiment of the invention, the restriction (41) defines an orifice (43) formed as part of the sprayhead (9). In another embodiment, the restriction (91) defines a single orifice (93) or a plurality of orifices (93) located within an outlet tube (85) terminating in the nozzle opening (91). In a further embodiment, the restriction (103) defines an integral reduced cross-section portion of the outlet tube (99). |
