B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
117/57, 32/60
B05D 1/02 (2006.01) B05B 7/08 (2006.01) B05B 7/12 (2006.01) B05B 7/16 (2006.01)
Patent
CA 1336373
An apparatus for spraying molten thermoplas- tic adhesive in which the outside of a solid stream of adhesive ejected from a nozzle is impacted by atomiz- ing air to form adhesive droplets and the droplets are then directed by pattern-shaping air into a predeter- mined area of a substrate. The flow rate and velocity of the atomizing air and pattern-shaping air is independently controlled by separate regulating valves to permit variation of the size of the adhesive droplets formed and the width of the pattern of droplets deposited on a substrate. Control valves are provided to sequence the flow of adhesive discharged from the nozzle with the flow of atomizing and pat- tern-shaping air such that the flow of atomizing and pattern-shaping air is initiated before the flow of adhesive from the nozzle begins and after the flow of adhesive therefrom is terminated.
604264
Scholl Charles H.
Woodlief Robert J.
Corporation Nordson
Macrae & Co.
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