Coating processes – Roller applicator utilized
Patent
1975-08-18
1978-01-03
McIntosh, John P.
Coating processes
Roller applicator utilized
118221, 118223, 118231, 118262, 156566, 427286, B05C 102, B05D 128, B05D 136
Patent
active
040668088
ABSTRACT:
Labeling apparatus wherein a rotor rotatable about a vertical axis is provided with peripherally spaced suction pads for taking labels presented thereto in vertical positions, moving them by adhesive-applying rolls for application of adhesive thereto and then pressing them into engagement with the side surfaces of containers supported in vertical positions. The adhesive-applying rolls are supported in substantially vertical positions in tangential relation to the rotor and there are adjustably mounted doctor rolls supported in tangential engagement with the adhesive rolls. The surfaces of the adhesive-applying and doctor rolls have mutually interengaged ribs and grooves and adhesive is supplied to the upper ends of the doctor rolls in free flowing streams so as to flow downwardly over the lateral surfaces of the rolls to their lower ends. A tray at the lower ends provides for collecting the adhesive and returning it to a reservoir for reuse. The doctor rolls are driven at about 1/12 the rate of rotation of the applicator rolls and there are strippers associated with the applicator rolls to prevent the labels from clinging to the applicator rolls. A drive is provided for constantly rotating the adhesive-applying and doctor rolls and a pump is provided for pumping adhesive thereto in sufficient quantity to keep the adhesive-applying rolls and doctor rolls coated at all times with adhesive and to coat the labels as fast as they are presented to the adhesive-applying rolls. Override clutches provide for driving the adhesive-applying rolls at a lower speed and valves provide for controlling the adhesive supplied to the rolls by the pump.
REFERENCES:
patent: 1780793 (1930-11-01), McLaurin
patent: 2682254 (1954-06-01), Nicholson
patent: 2704530 (1955-03-01), Nilsen et al.
patent: 2905141 (1959-09-01), Young
patent: 2989940 (1961-06-01), Williams
patent: 3111897 (1963-11-01), Vanbuskirk
patent: 3303815 (1967-02-01), Silver
patent: 3358645 (1967-12-01), Caulford et al.
patent: 3623451 (1971-11-01), Burgess et al.
patent: 3685441 (1972-08-01), Aebersold et al.
A-T-O Inc.
McIntosh John P.
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