| 摘要 |
An apparatus ( 10 ) for dispensing a filament of liquid includes a nozzle ( 12 ) having a liquid discharge passage ( 46 ) and a plurality of air discharge passages ( 70, 72, 74, 76 ). The liquid discharge passage ( 46 ) extends centrally through a frustoconical protrusion ( 89 ) which is located in a recess ( 88 ). The air discharge passages ( 70, 72, 74, 76 ) are arranged in a pattern around the liquid discharge passage ( 46 ) at the base of the protrusion ( 89 ) within the recess ( 88 ). The air discharge passages ( 70, 72, 74, 76 ) have axes ( 70 a, 72 a, 74 a, 76 a) which are inclined such that jets of air from the air discharge passages ( 70, 72, 74, 76 ) are tangential to the filament ( 13 ) dispensed from the liquid discharge passage ( 46 ). The jets of air cause the filament ( 13 ) to move in a swirl pattern as it is deposited on a substrate ( 18 ).
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