The “A” component, while in the drum, will react with atoms in the air resulting in the formation of crystal like skin structures. The “A” material should be sealed properly to limit the potential of these formations that if allowed to form will contaminate the liquid. Contamination may make the liquid impossible to process, requiring disposal and wasting of the product. Once the drum is opened, the air needed to replace the displacement of the “A” material being removed should be dry. This is achieved be either low pressure nitrogen being let in the drum as the material is displaced or filtered through a desiccant dryer.
Category Archives: Material
Apply spray better with this trick
Spray mechanics generally prefer a product that maintains a good level of sprayability for processing. Applying or processing spray foams just on the cooler side of the temperature processing spectrum can aid in maintaining a good pattern.
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