Darryl Keil
Posts: 1454
Joined: 2003-05-22
Location: Maine
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Brian,
Plastic Resin is just a common name for Urea Formaldehyde Resin glue. Plastic Resin usually denotes the powdered version where Unibond 800 is a liquid version. Plastic Resin usually has a much higher water content since you're adding water to reconstitute it. This is probably the reason Tom had the extra movement with the Plastic Resin and not the Unibond 800.
Tom, I appreciate you search for a Urea Resin glue with less formaldehyde. We too, have worked on this. At this point we have found that Urea glues with less formaldehyde do not bond as well at room temperature. In a hot press low formaldehyde glues work quite well. We also use liquids other than water in Unibond 800 to aid in performance, this adds to making it stinky. Although I would like to produce a veneering and laminating glue that is more environmentally friendly our first priority is high performance.
Formaldehyde is a substance that is used in countless application to improve performance with excellent results. I heard from a reliable source they even put formaldehyde in beer.
Sincerely
Darryl Keil
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