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Plam delaminating issues7/20
We are having continuing issues with plam delaminating from jobs after installs. We were spraying Wisonart canister glue and just switched to Sta Put SP 80. We have a well heat shop and AC in the summer. We noticed that it seems that the substrates are shrinking more then the laminate. Edges are cleaned up nice but at the time of delaminating the laminate is hanging over. We pinch roller when ever possible but this does not seem to matter. We had both reps from Wilsonart and Sta Put here to show exactly how to use their products. We still have issues. All the work is in commercial sites. Field temperature conditions vary as well. Is any one else have these problems as well? Any ideas what is going on?
Hey Walt, I'm curious does this happen on a variety of substrates, or just MDF?
I recently had to switch, I was using premier adhesives in the canister and the supplier has switched to Formica which I will never buy again. So now I was thinking of trying wilsonart.
We have this problem with all substrates.
It sounds like your problem is more related to expansion/contraction if you're noticing a difference on your previous edges.
I don't trust contact on MDF or melamine, either one I will do when I have to but always roughed up with the belt sander with 40 grit first.
You might want to try laying up your panels in a press with pva if you can.
Delamination failure may be detected in the material by its sound solid composite has bright sound, while delaminated part sounds dull, reinforced concrete sounds solid, whereas delaminated concrete will have a light drum-like sound when exposed to a dragged chain pulled across its surface.
I didn't have very good luck with canister glue. Try one job using spray grade and a pressure pot and see if there is a difference.
The ongoing problem with solvent and water base contact cement is the solid content or neoprene . We still spray solvent base Wilson art 800. With no problems we are also a post forming shop . We use the same glue for laminate cabinets. With the canister systems there all pretty much the same unstable garbage! Look at the gun passages I bet they are small for the low solid glue? I usually get 2-3 mfg reps trying to push there product so we run both the 800 and whatever they have at the same time. Once I pull it out of the machine I grab there sample and it delaminates without much effort then I ask them to try and pull apart the core with the w/a 800...... Then I get the our glue is best for flat work bs. as they are walking out I ask again why would I change ? That's the last time I see them. Bottom line no laminate shift or de laminating . We have been in the laminate business for 50 years! Ouality materials