High speed, no stringing, hot melt adhesive dispensing head

Details High speed, no stringing, hot melt adhesive dispensing head High speed, no stringing, hot melt adhesive dispensing head

1999-05-07

2000-08-22

Shaver, Kevin

Dispensing

Nozzles, spouts and pouring devices

Antidrip

222148, 251325, 239119, 239586, B05B 1502

Patent

active

061058327

ABSTRACT:
It is therefore an object of the present invention to provide a valve assembly of the general class aforedescribed having the capability of drawing-back the flow of product from the nozzle after valve closing, in a more accurate and precise manner, requiring few moving parts, without the need of external sources for moving any of the parts, and in a manner which automatically closes the discharge and thereafter creates the suck-back flow.

REFERENCES:
patent: 4119058 (1978-10-01), Schmermund
patent: 4516702 (1985-05-01), Schmidt
patent: 5429304 (1995-07-01), Tomita et al.
patent: 5720433 (1998-02-01), Forker
patent: 5794825 (1998-08-01), Gordon et al.

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