Something to use...Gluer Guide...Folder Modification Terms
Folder Modification Terms
Grooved Nose refers to the leading edge of the upper portion of the fold plate where the paper enters. (See figure 5) This curved area must have a groove for every spot or line of applied glue that is exposed when entering or exiting the fold plate. The nose of the plate must be grooved from the top of the curve, around to and including the straight area. The groove depth must be a minimum of .075 inches deep x .50 inches wide. A .09 inch deep x .50 inch wide groove is recommended for hot-melt gluing. Making the groove the same width as the open area between your fold plate ribs give maximum flexibility to do a wider variety of jobs. Grooving of the nose is more critical on fold plates made of stamped sheet metal. You must be careful not to make the groove too deep, creating a weak area in the plate. Most of these fold plates are 1/8 inch thick. Also take care not to leave a sharp edge or burrs when machining the groove. A nick or burr can cause the paper to stumble when entering the fold plate and/or cause dog ears on the sheet. Do not cut through the plate. Fold plates that are a "bolt-up" construction have more material thickness to be grooved.
Segmented/Grooved Fold Rollers All in-line gluing systems require certain fold rollers to be grooved to allow exposed glue to pass through without contacting the fold roller and smearing. All fold rollers on your folding machine do not require a groove. You must define the job you want to run in terms of which fold plates are being used to determine which roller(s) require grooves. The location of the groove in the fold roller must be aligned with a groove in the nose of the fold plate to allow sufficient clearance for the glue to pass through without smearing.
You can provide the required grooves by removing the existing roller and machining a groove, or you can replace the existing fold roller with a segmented roller. Grooving an existing fold roller required positioning all your gluing jobs to this fixed groove location. The minimum groove depth in the roller should be .09 inches or approx. 3/32 of an inch. The minimum groove width should be .31 inches or 5/16 on an inch.
A segmented fold roller gives you the flexibility to apply glue in more locations. A segmented fold roller consists of a shaft with several moveable segments using setscrews for positioning. (See figure 6) These segmented fold rollers are available from Baumfolder for most Baum floor-model folding machines.
Floor Model Folders . . . .Table-top Folders. . . .Paper Cutters
Paper Drills. . . .Finishing Equip. . . .Specialized Application Equipment
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Last Updated January 24, 2005