초록 ▼

A hot melt adhesive dispensing nozzle or die assembly spans two adjacent adhesive material valved inlets. One of the valved inlets is blocked off by means of the nozzle or die assembly, while the other adhesive material input or valved inlet is in effect split into two equal laterally separated outp

A hot melt adhesive dispensing nozzle or die assembly spans two adjacent adhesive material valved inlets. One of the valved inlets is blocked off by means of the nozzle or die assembly, while the other adhesive material input or valved inlet is in effect split into two equal laterally separated output arrays of dispensing nozzles so as to provide for a void in the dispensing or deposition pattern at a predeterminedly desired location. The nozzle or die assembly comprises unique structure for ensuring that the hot melt adhesive material is able to be conducted to the remote one of the laterally separated array of dispensing nozzles. In addition, the two laterally separated arrays of output dispensing nozzles together comprise the same number of conventional non-split output dispensing nozzles operatively associated with each adhesive material input or valved inlet such that the volume flow rate through each one of the individual dispensing nozzles remains the same. In this manner, the aforenoted pattern void is achieved while preserving the desired ratio of heated air to adhesive material whereby the hot melt adhesive material being dispensed retains its proper fluidic properties, and undue waste of the adhesive material is not incurred.

대표청구항 ▼

1. A material dispensing nozzle assembly for use in connection with a fluid metering device having laterally separated supply conduits, comprising:a plurality of plates fixedly secured together and having a predetermined lateral extent which is large enough to span the distance defined between first

1. A material dispensing nozzle assembly for use in connection with a fluid metering device having laterally separated supply conduits, comprising:a plurality of plates fixedly secured together and having a predetermined lateral extent which is large enough to span the distance defined between first and second laterally separated supply conduits of a fluid metering device; a first one of said plurality of plates having at least first and second laterally separated sets of fluid material dispensing nozzles defined therein which define a void therebetween so as to permit dispensing of a first fluid material in first and second laterally separated sets of streams of fluid material with a void defined between the first and second laterally separated sets of streams of fluid material; a second one of said plurality of plates having an aperture defined therein at a first predetermined location for fluidic communication with the first supply conduit of the fluid metering device so as to permit fluid flow therethrough of the first fluid material from the first supply conduit of the fluid metering device, and having a solid portion defined therein at a second predetermined location so as to block fluid flow of the first fluid material from the second supply conduit of the fluid metering device; and at least a third one of said plurality of plates having fluid flow paths defined therein for conducting fluid material from said aperture fluidically connected to the first supply conduit of the fluid metering device to both of said first and second laterally separated sets of fluid material dispensing nozzles so as to permit dispensing of the first fluid material only from the first supply conduit of the fluid metering device and through both of said first and second laterally separated sets of fluid material dispensing nozzles in first and second laterally separated sets of streams of fluid material with the void defined between the first and second laterally separated sets of streams of fluid material.