Listed below are some common problems, causes and recommendations for cold pressing.
DELAMINATION WITH LITTLE SUBSTRATE FAILURE
Possible causes include: pre-cure, low pressure, short press time. Recommendations: increase glue spread, decrease assembly time, increase pressure and/or increase press time.
Possible causes include: uneven surfaces, worn spreader rolls, pre-cure. Recommendations: calibrate cores to uniform thickness and/or increase pressure, replace or regroove rolls, increase glue spread, decrease assembly time.
GLUE BLEEDS THROUGH FACE VENEERS
Possible causes include: excessive glue spread, excessive pres-sure, wrong adhesive type. Recommendations: reduce glue spread, reduce pressure, contact your account manager.
TELEGRAPHING OF CORE DEFECTS OR BANDING
Possible causes include: excessive pressure, uneven or variable thickness, foreign material on core Recommendations: reduce pressure, pre-sand core and pre-clean core, reduce glue spread.
Source: Franklin Adhesives. For more information call (800) 877-4583 or visit FranklinAdhesivesAndPolymers.com.