Veneer Splicer Problems 5: Poor Jointing, Excessive Glue Spread, Crimping

Troubleshooting checklist for dealing with glue-up problems in veneer splicing operations. January 4, 2007

Reprinted with permission from Diehl Machines, www.diehlmachines.com.

Poor Jointing


The sections of the veneer are spliced but sections open. Slight openings found along the glue line.

Inconsistent or insufficient glue spread. Sections of the veneer received too little glue or none.

Check the method of applying glue to the veneer.

Small slivers of the veneer were torn out along the edge.

Check the jointer.

Excessive Glue Spread

A build up of glue on the surface of the veneer.

Too heavy of a glue spread on the veneer.

Check the method of applying glue.

Tear out of the veneer along the glue line.

Build up of crystallized glue on either the upper heater strip or lower heater bar.

Check the method of applying glue.

Crimping

The leading edge of the glue line is pushed back along the glue line.

Build up of crystallized glue on either the upper heater strip or lower heater bar.

Check the method of applying glue.

Lower heater bar is high.

Readjust the lower and upper heater bars.

See other articles in this series at:
Overlapping
Mismatching
Burning, Burnishing, Crimping
Marking of Stock, Grooving Along the Glue Line, Incomplete Glue Joint
Blue Staining

Reprinted with permission from Diehl Machines, www.diehlmachines.com.