Quality Polypropylene Croffles: Effective Plastic Float Balls
Our polypropylene croffles and floating ball blankets provide a highly effective solution to difficult liquid storage problems. By placing a sufficient number of hollow plastic float balls onto the surface of a liquid, they arrange themselves into a closely packed formation over 91% of the surface area. Therefore, such a high surface coverage provides a successful barrier. As a result, this reduces the mass and heat transfer mechanisms operating between the liquid and the surrounding environment.
Also, a thermal insulation barrier is achieved through the air held in each plastic float ball and the poor heat conductivity of plastic. Although the air pockets between the croffles are not sealed, this contributes to this cellular insulation system which dramatically reduces heat loss.
In addition, the low liquid surface area exposed to the atmosphere decreases liquid loss through evaporation, odour released into the atmosphere and prevents surface absorption of oxygen.
Most importantly, a blanket of our float balls presents no difficulty to product dipping or equipment which need to move through the liquid; when this occurs, the balls are pushed aside, but quickly reform their cover as the equipment moves forward or products are lifted away from the tank. The balls will also rise and fall with the liquid level, which provides a constant cover over liquids held in reservoirs with sloping sides or within storage tanks. Moreover, if the liquid level falls, causing the surface area to shrink, the balls will stack in a double layer; as the level rises again they will spread themselves into a single layer.