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Cold Versus Hot-Melt PUR Glues
Question
Forum Responses
From the original questioner: Thanks. I looked briefly at the adhesives available at Weiss and it seems these don't have the properties that attracted me to the hot melt PUR in the first place. The reason I am considering switching from PVA to PUR is the 2 minute set time you can get with a hot melt. The other main difference between cold and hot PUR that I see as problematic is that the adhesives I saw at Weiss say they foam, which is the reason I generally stay away from using Gorilla Glue. Are there any cold PURs that don't foam and have a 2 minute set time? I'm definitely open to suggestions. If you can tell me a little about your operation and why it is you like using the cold PUR it would be much appreciated. From contributor B: We [Spectrum Adhesives] offer a product CP-0712, which is a very fast set (3.5-5 minutes) liquid PUR. It does foam. In general, the more aggressive the cure, the more aggressive the foam. The foam does remove and clean up easily. From the original questioner: It seems you offer both hot and cold PUR. Does squeeze-out from the hot melt clean up better and/or easier than the foam from the cold? To tell the truth I'm still a little more drawn to the hot melt but I guess if I can avoid another equipment purchase that would be best. From contributor B: PUR hot melt squeeze out does clean up easily, though part of the intention of the hot melt is to minimize any squeeze out. It's easier to control the amount of hot melt and where it goes. I'd consider the liquid first and see if it does the job for you - a lot smaller investment! Would you like to add information to this article? Interested in writing or submitting an article? Have a question about this article? Have you reviewed the related Knowledge Base areas below? 
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