| 摘要 |
A method and adhesive dispensing apparatus for applying continuous, parallel rows of adhesive onto the center portion of the backing sheet of a disposable diaper and intermittent, parallel rows of adhesive on the outer portions of the backing sheet on either side of the center portion. The apparatus includes a slot nozzle, divided into two center sections and two end sections, which is formed with flow passageways for each section having a coat hanger profile including a plurality of spaced, discharge orifices to form the parallel adhesive rows. A valving arrangement including solenoid-operated center dispensing valves for each center section of the nozzle, and solenoid-operated dispensing and recirculation valve pairs for each end section of the nozzle, controls the flow of adhesive to the nozzle. The center dispensing valves are continuously opened during an operating run to apply continuous adhesive beads on the center portion of the backing sheet, and the outer dispensing valves are opened and closed intermittently to form gaps on the end portions of the backing sheet without adhesive where the leg holes of the diaper are subsequently cut to form individual diapers.
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