The surface of the rubber strip is wrinkled and uneven after curing. Why?
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This kind of situation occurs more frequently during vertical seam sizing. The reason for this analysis should be that the initial wetting time of the glue is slower on the surface of the substrate, that is, the initial bonding force is poor, resulting in the sealant due to its weight Sagging forms wrinkles and unevenness. It is recommended to extend the trimming time as much as possible within the construction allowable range while changing the trimming operation. Use a scraper to trim upwards from the lower end of the glue seam. Be careful not to squeeze excessively when trimming, otherwise It is easy to cause the pad foam rod to deform, and then the foam rod will gradually recover, causing the sealant to swell as a whole.
