Veneer Splicer Problems 3: Burning, Burnishing, Crimping
Troubleshooting checklist for addressing quality issues that arise during veneer splicing operations. January 4, 2007
Reprinted with permission from Diehl Machines, www.diehlmachines.com.
| Burning of Veneer |
Dark brown scorch lines on either side of the glue line. Usually dominant on the bottom side from the lower heater bar. | Excessive heat from either the upper or lower heater bar. Also crystallizes the glue. | Lower the temperature setting. See temperature/thickness chart. | Increase the feed rate. | | Burnishing of Veneer | Crushed and shiny surface along the glue line. | Too much pressure. | Check the pressure setting. | | Crimping of Veneer | The veneer is crimped within 1" of either side of the glue line. | The inside edges of the feed chains are worn. | Replace the feed chains. | Reduce the pressure. |
See other articles in this series at:
Overlapping
Mismatching
Marking of Stock, Grooving Along the Glue Line, Incomplete Glue Joint
Poor Jointing, Excessive Glue Spread, Crimping
Blue Staining
Reprinted with permission from Diehl Machines, www.diehlmachines.com.
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