Device and method for applying adhesive filaments to materials such as strands or flat substrates

A nozzle for dispensing a plurality of liquid filaments, the nozzle comprising:

• a body having liquid and process air supply passages, a tip portion, first and second liquid discharge outlets on said tip portion, and first and second pluralities of process air outlets on said tip portion respectively associated with said first and second liquid discharge outlets, said liquid discharge outlets and process air outlets respectively receiving liquid and process air from said liquid and process air supply passages,
• a first wall projecting from said tip portion and including an end positioned beyond said liquid and process air outlets and positioned between said first and second pluralities of process air outlets to separate process air streams respectively discharged from said first and second pluralities of process air outlets,
• a second wall extending from said tip portion and positioned on an opposite side of said first liquid discharge outlet and said first plurality of process air outlets from said first wall, said second wall projecting beyond said first liquid discharge outlet and said first plurality of process air outlets, and
• a third wall extending from said tip portion and positioned on an opposite side of said second liquid discharge outlet and said second plurality of process air outlets from said first wall, said third wall projecting beyond said second liquid discharge outlet and said second plurality of process air outlets.

A nozzle for dispensing a plurality of liquid filaments comprising:

• a body having liquid and process air supply passages, a tip portion, first and second liquid discharge outlets on said tip portion, a first liquid discharge passage extending along an axis and communicating with said first liquid discharge outlet, and first and second pluralities of process air outlets on said tip portion respectively associated with said first and second liquid discharge outlets, said liquid discharge outlets and process air outlets respectively receiving liquid and process air from said liquid and process air supply passages, and
• a first wall projecting from said tip portion and including an end positioned beyond said liquid and process air outlets and positioned between said first and second pluralities of process air outlets to separate process air streams respectively discharged from said first and second pluralities of process air outlets,
• wherein said first plurality of process air outlets include first and second pattern air discharge orifices arranged 180° apart on opposite sides of said first liquid discharge outlet and configured to direct pressurized pattern air at a first liquid filament discharged through said first liquid discharge outlet to vacillate the first liquid filament back and forth in a vacillation plane containing said first and second pattern air discharge orifices, and
• first and second cleaning and stabilizing air discharge orifices 180° apart on opposite sides of said first liquid discharge outlet and positioned 90° from said first and second pattern air discharge orifices, said first and second cleaning and stabilizing air discharge orifices configured to direct pressurized cleaning and stabilizing air in a direction parallel to said axis to clear airborne contaminants away from said first liquid discharge outlet and to stabilize the liquid filament in said vacillation plane.

A device for dispensing a plurality of liquid filaments comprising:

• a body having liquid and process air supply passages, a tip portion, first and second liquid discharge outlets on said tip portion, a first liquid discharge passage extending along an axis and communicating with said first liquid discharge outlet, and first and second pluralities of process air outlets on said tip portion respectively associated with said first and second liquid discharge outlets, said liquid discharge outlets and process air outlets respectively receiving liquid and process air from said liquid and process air supply passages,
• a gun body having a valve mechanism capable of selectively supplying the liquid to said liquid supply passages of said nozzle body, and
• a first wall projecting from said tip portion and including an end positioned beyond said liquid and process air outlets and positioned between said first and second pluralities of process air outlets to separate process air streams respectively discharged from said first and second pluralities of process air outlets,
• wherein said first plurality of process air outlets include first and second pattern air discharge orifices arranged 180° apart on opposite sides of said first liquid discharge outlet and configured to direct pressurized pattern air at a first liquid filament discharged through said first liquid discharge outlet to vacillate the first liquid filament back and forth in a vacillation plane containing said first and second pattern air discharge orifices, and
• first and second cleaning and stabilizing air discharge orifices 180° apart on opposite sides of said first liquid discharge outlet and positioned 90° from said first and second pattern air discharge orifices, said first and second cleaning and stabilizing air discharge orifices configured to direct pressurized cleaning and stabilizing air in a direction parallel to said axis to clear airborne contaminants away from said first liquid discharge outlet and to stabilize the liquid filament in said vacillation plane.