# US 4,391,856 A · Adhesive applicator and method for cigarette-to-filter adhesion and similar applications

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- Number: US 4,391,856 A
- Document ID: US4391856A
- Status: Granted
- Kind: A
- Application number: 06/198,616
- Filed: 1980-10-20
- Granted: 1983-07-05
- Earliest claimed: 1979-08-27
- Assignees: Acumeter Laboratories, Inc.
- Inventors: Donald B. McIntyre; Frederic S. McIntyre
- Web page: https://patentgrep.com/patent/US4391856A

## CPC

- B05C 5/0291: {the material being discharged on the work through discrete orifices as discrete droplets, beads or strips that coalesce on the work or are spread on the work so as to form a continuous coating}
- A24C 5/472: {Applying adhesives to the connecting band}
- B05C 5/0254: {Coating heads with slot-shaped outlet (B05C5/0283 takes precedence)}
- B05C 5/027: {Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated (B05C5/0254 takes precedence)}
- D21H 5/0042: {by pouring or allowing to flow in a continuous stream onto the surface, the entire stream being carried away by the paper}
- D21H 23/46: Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper (D21H23/66 takes precedence)
- B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08)
- A24C: MACHINES FOR MAKING CIGARS OR CIGARETTES
- D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR

## Abstract

This disclosure is concerned with enabling the use of multiple liquid adhesive nozzles principally to provide continuous uniform adhesive layers, particularly in relatively small items such as cigarette filter tips or the like, wherein a critically oriented adhesive shear surface adjacent the nozzles causes the plurality of adhesive beads simultaneously deposited by the nozzles to merge into a full, continuous, uniform coating, and with additional control features provided to control the degree of merger from separate adjacent beads to uniform merged coating.

## Claims

### Claim 1

A method of fluid adhesive application, that comprises, depositing at a predetermined region a plurality of inline closely transversely spaced, non-overlapping parallel beads of such adhesive upon a web while drawing the web longitudinally through said region; deflecting the parallel-bead-coated web upward at an acute angle over an edge just beyond the region of bead deposition; and controlling the size of the beads and degree of upward deflection relative to the speed of drawing of the web to shear the beads at said edge and merge the same into a uniform, continuous, full adhesive coating transversely across said web.