Module, nozzle and method for dispensing controlled patterns of liquid material

摘要

A liquid dispensing module and nozzle or die tip for discharging at least one liquid filament. The nozzle includes a strand guide for guiding a substrate past the nozzle and a frustoconical protrusion disposed on a surface of the nozzle adjacent the notch. A liquid discharge passage extends along an axis through the frustoconical protrusion and forms an acute angle with a machine direction corresponding to movement of the strand past the nozzle. Four air discharge passages are positioned at the base of the frustoconical protrusion. Each of the air discharge passages is angled in a compound manner generally toward the liquid discharge passage and offset from the axis of the liquid discharge passage to create the controlled pattern of liquid material on the strand.

主权项

1. A dispensing module for dispensing a controlled pattern of liquid material onto a strand moving along a line in a machine direction, comprising:
a module body including a flat interface; a nozzle body including a first side including a flat surface mounted to said flat interface of said module body, and a second side; a liquid supply port and a process air supply port in said nozzle body; a liquid discharge passage connected in fluid communication with said liquid supply port and including a liquid discharge outlet on said second side of said nozzle body, said liquid discharge passage extending along an axis that extends through said liquid discharge outlet and is oriented at an acute angle to a plane parallel to said flat surface so as to form an acute angle with the machine direction when the nozzle is discharging liquid onto the strand in the machine direction; and a plurality of process air discharge passages connected in fluid communication with said process air supply port, a plurality of process air discharge outlets associated with said liquid discharge outlet on said second side of said nozzle body and said plurality of process air discharge passages connected in fluid communication with said plurality of process air discharge outlets.