Hot melt adhesive applicator

Details Hot melt adhesive applicator Hot melt adhesive applicator

1983-02-25

1988-09-27

Rolla, Joseph J.

Dispensing

With heating or cooling means

Heating only

222508, 222516, 222542, B67D 562

Patent

active

047735660

ABSTRACT:
A hot melt adhesive applicator capable of dispensing relatively large volumes of molten adhesive at relatively fast rates, comprising a barrel and rotary valve block mounted in a housing and a rotary valve to control the flow of the molten adhesive through the barrel. Heaters attached to the barrel maintain the adhesive in the molten state. Advantageously an arm may be mounted on the spindle of the rotary valve, capable of being moved manually, by electrical or mechanical means to open and close the valve. Compression seals mounted on the valve spindle prevent seepage of molten thermoplastic from the valve block. The passage in the rotary valve can be selected to provide a low pressure drop in the applicator.

REFERENCES:
patent: 2567960 (1951-09-01), Myers et al.
patent: 2659628 (1953-11-01), Beach
patent: 3091233 (1963-05-01), Dunlap
patent: 3438387 (1969-04-01), Scaramucci
patent: 3485417 (1969-12-01), Cocks
patent: 3764045 (1973-10-01), Ornsteen
patent: 3971492 (1976-07-01), Lockwood
patent: 4099653 (1978-07-01), Scholl et al.
patent: 4245759 (1981-01-01), Baker et al.

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