| 摘要 |
A novel preferably poppet-valve-controlled fluid applicator for extruding hot melt and other coating fluids and the like as fibers or filaments and/or droplets upon moving webs and other surfaces wherein the valve stem tip (T) blocks or permits the flow of the fluid into a hollow nozzle insert (4) communicating with, preferably, a needle-like nozzle tube spray extruder (15), with provision for adjustment to produce controlled fiber and/or droplet spray coatings, and preferably though optionally with air-shaping control of the coatings.
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