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US 4,277,301 AGranted
Wide-band and continuous line adhesive applicator for cigarette filter attachment and the like
AssigneeAcumeter Laboratories, Inc.
InventorsDonald B. McIntyre, Frederic S. McIntyre
Life of this patent
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Abstract
This disclosure involves periodically bumping webs such as a cigarette filter paper or the like against a shear surface disposed beyond a multi-nozzle adhesive extruder to provide longitudinally intermittent bands of adhesive coatings for the filters or the like, with optional provision for continuous marginal lines of adhesive along and between the bands for adhesion on the head and tail ends of such filters or other articles as well.
Claims9
A fluid adhesive applicator having, a plurality of fine-orifice spaced nozzles disposed in a plane and extending transversely of a predetermined region;
- means for drawing a web of material-to-be-coated longitudinally through said predetermined region in juxtaposition to the orifices of said nozzles;
- pumping means for extruding fluid adhesive simultaneously through said nozzles onto the web as a corresponding plurality of closely spaced beads of adhesive extending transversely across said web;
- shear edge means disposed a short distance longitudinally beyond said orifices;
- the web carrying said beads from said nozzles to said shear edge means;
- and periodically activated bumper means disposed on the opposite side of the web from the edge means for bumping said plurality of adhesive beads carried by the web against said edge means to cause spreading of the beads into longitudinally intermittent bands of adhesive having a width in the range extending from bands of parallel stripes corresponding to the width of said beads to a merged-uniform continuous coating band.
2 more elements
Dependencies are inferred from the claim text.