Outside Air Temp effect on Green Bond
May 23, 2022
Ron asks:
We had an overhead garage door installed prior to our 2018 corrugator project – the OEM had us install it for ease of bringing new equipment into the building. Certain times of the year, say April to October, the corrugator crews have the overhead door open and just have the screen door down to allow fresh outside air in. This door is maybe 18′ from the corrugator stacker. Should we have any concern about green bond shock on a cooler morning. The stock coming off the hot plate section is 275 degrees +/- and if the outside air temp was 50 would you be concerned about that? I haven’t been able to find any studies related to this. Your opinion would be greatly appreciated.
I would focus more on the final pin adhesion strength. You should target values above 45 and up to 60 pounds per foot. If the pH, viscosity, and starch temperatures in the pan are within your process parameters, green bond should not be an issue.
Let’s toss it out to our readers. Have any of our other corrugator operations had any experience with this scenario?
— Ralph
