JETTING DISCRETE VOLUMES OF HIGH VISCOSITY LIQUID

摘要

An adhesive dispensing system and method of dispensing liquid material are disclosed. The adhesive dispensing system includes an adhesive dispensing module receiving hot melt adhesive through the inlet at a low pressure and rapidly developing high pressure at an outlet to thereby jet the hot melt adhesive therefrom. The system also includes a pressure container containing a supply of hot melt adhesive and configured to melt or maintain a heated temperature of the hot melt adhesive. A low pressure liquid passageway communicates between the adhesive dispensing module and the pressure container. The system also includes a pressurized air source in fluid communication with the adhesive dispensing module to operate the adhesive dispensing module by moving a piston to generate high pressure at the outlet of a nozzle for jetting hot melt adhesive as a discrete volume toward a substrate.

主权项

1. An adhesive dispensing system, the system comprising:
an adhesive dispensing module having an inlet and an outlet, the adhesive dispensing module receiving hot melt adhesive through the inlet at a low pressure and rapidly developing high pressure at the outlet to thereby jet the hot melt adhesive therefrom; a pressure container containing a supply of hot melt adhesive and configured to melt or maintain a heated temperature of the hot melt adhesive, and further configured to provide the hot melt adhesive to the adhesive dispensing module at the low pressure; a low pressure liquid passageway communicating between the adhesive dispensing module and the pressure container; and a pressurized air source in fluid communication with the adhesive dispensing module to operate the adhesive dispensing module by moving a piston to generate high pressure at the outlet of a nozzle for jetting hot melt adhesive as a discrete volume toward a substrate.