Material Spraying Issues

It’s less common when material will not spray on the ‘A’ side and ‘B’ side at the same time, but when it happens, there could be a number of factors at play. If you find yourself in this position, take a look at these common reasons;

  1. Proper operation of the pumping system. (execute initial startup checks)
  2. The product cold, it doesn’t flow properly.
  3. Failing delivery supply like transfer pump wear or neglect.
  4. Your regulator could be malfunctioning; Are you getting enough air supply to your Transfer Pump?
  5. Failing packings from wear or neglect.
  6. Clogged screens can also cause major issues in proper flow.
  7. Recent crossover in hose or contamination within the gun itself.

Reduce Pocketing in Studs

There are different ways to spray Open Cell foam to eliminate pocketing when spraying studs. Depending on the manufacturer you are using, they will recommend vertical or horizontal spray techniques – because of the chemical compound and how it settles in. For example; Rhino Linings recommends spraying horizontally with their Thermal Guard Open Cell. In doing so, I can improve my overall spray quality and deliver a better end-product.

Remove moisture from your drums

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.