METHOD AND APPARATUS FOR DISPENSING VISCOUS MATERIALS

摘要

A method and apparatus for simultaneously dispensing a plurality of viscous materials, such as dentifrice pastes, produces a striped outer layer of a first material surrounding a core of a second viscous material. The apparatus (10) includes a collapsible tube or pump-type dispenser (12) containing a first viscous material (20) and a second viscous material (22) of a contrasting color in contact with the first material so that both materials are dispensed simultaneously. The tube or dispenser includes an outlet nozzle (14) having a shaped outlet (32) capable of scraping and removing a portion of the outer layer of viscous material to dispense the core material having stripes of the outer material. The nozzle is capable of forming a plurality of fine pin stripes on the core material .