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Wilsonart 1731 adhesive delamination problems10/8
About a year and a half ago we switched to Wilsonart 1731 spray adhesive. Now we are having calls for counter tops and cabinet doors where the laminate is just falling off. We have been in business for 25 years and never seen anything like this. Was wondering if anyone else was having this problem?
Yeah we have had a glue rep in here and they said it was our spray pattern. If the glue is that temperamental then they should properly show how it needs to be applied. Does anyone know where the Wilsonart 1731 is manufactured?
Wilsonart adhesives plant is in Temple TX next to the laminate plant.
LOW VOC Methyl Acetate Glues are very different from traditional contact cements. The air pressure and fluid pressure has to be less. ( it should be on the tech data sheet) They atomizes very well. This helps with any telegraphing that may be caused by the "FAT" pebble pattern of traditional contact or the "WEB" pattern made by canisters. BUT, if the air pressure is too high then the glue can dry before it is even touches the laminate or board. This also makes for a pebble pattern that is very small. So, to make "CONTACT" proper pressure is a must. No longer can you get away with blocks of wood, hammer and block, flooring rollers, or your bare hand. 3" J rollers or pinch rollers should be used to get the "PIN POINT PEBBLES" to touch each other and make good contact. Once the glue contacts more individual places the bond is incredible. I would put it up against any traditional contact cement.
Great information Robert! I would definitely agree that there is no inherent problem with the glue. It's really more a matter of proper training and a full understanding of how it's different than the traditional stuff.
By the way, would you suggest using it for veneering? :-)
A better solution is water based contact. Not temperamental about short open times. It just needs to flash off long enough to not leave water behind. That is longer than traditional solvent based. That isn't a problem. You just work on a few more parts at a time with not labor cost increase. We've been using the Henkel product for many years. Greatly reduced health risks! It is different to use. So learn how first.
Henkel makes a Water based contact cement? What is the name and number on it. thanks
We also have been in business for 28 years, switched to the low VOC glue and two tears later the laminate is falling off and curling up. We laminated both sides of our doors with the glue and only the exterior of the doors are falling off. Explain that?
I am only guessing here. But, you asked for an explanation. I could never know what happened in your case after reading one paragraph. I hope this helps.
An inspection by a qualified person will likely give us the reason for delamination. However, we know, and stated clearly in the above postings, that these low VOC and non-F (or minimal about of "F") adhesives require different procedures for application, different MCs, different pressures and so on. In fact, I provided that info to the EPA regarding the potential to switch from the "F" adhesives. I agree with Jeff, that the newer adhesives are indeed excellent; it is the application techniques where we have issues at times.
Regarding doors, we do know that the exterior side of a door has larger moisture content changes than the interior. This means that a glue joint on the exterior side will have to be stronger than the interior side to prevent delamination. So, if we are making a reasonable joint, but it is not as strong as needed, the exterior side will fail first.