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Edging Counters with 3mm PVC best practices?1/11
We are realizing a greater demand to provide counters with 3mm PVC edgeband applied. We have had great success using our edgebander to adhere 3mm to straight counters, however, radius counters and "L" shaped counters require us to hand band. We have seen some adhesion failure (10%) in these instances, and wanted to know if anyone could recommend a proven adhesive and or process that can minimize such failure. We are looking into many variables, shop temperature, adhesive types, methodology, and discussing our challenges with a variety of pvc vendors. Any and all suggestions are greatly appreciated.
What are you using now for adhesive that results in 10% failure? We have used melamine glue with good results.
I second Melamine (Roo glue) never had a failure with pvc.
If you are using contact cement don't use solvent type. It doesn't get along with the plasticizers in the PVC. We recently got a portable hand held glue pot bander. It actually works fairly well for those large curvy things that we can't' handle on the other banders. Slow and we haven't mastered not getting glue in the wrong places. We changed the glue to the same as used in our stationary contour bander. We prime the panel edges before banding to improve adhesion. These things might even be a solution for a one man shop that does very limited banding. Can be bench mounted and used for straight line work.
We warm our edgeband before we apply it. Usually about 110-120 degrees. If you get it too hot, it will expand and then shrink when it cools. We sometimes apply 3mm to 90 degree angles with a 1" radius. In those cases we also WARM up the edges of the particle board about 2" from every corner. That seems to help the adhesive soak into the wood better. You could also try roughing up the back of the edgeband with some sandpaper. It would be a little time consuming but it would help the glue adhere to the edgeband.
Plastisizers used in the PVC edge band actively migrate into EVA and PVA adhesives reducing adhesive strength, PU and melamine base are delivering better resistance.
Are you using banding made for contouring? Much more flexible! I don't know if that flexibility comes from additional plasticizers that may cause other problems though.