Plastic hollow spheres are made of polypropylene (PP) via hot-melt injection molding. Some manufacturers offer polyethylene (PE), polyvinyl chloride (PVC), or polyvinylidene fluoride (PVDF) material variations depending on application requirements. A typical product consists of two hemispheres joined together to form a complete sphere. A circular reinforcement structure is located in the middle of the sphere to enhance mechanical strength and ensure structural stability under gas-liquid flushing conditions.
The sphere's surface features 12 fan-shaped blades arranged in a radially staggered pattern. This structure creates turbulent gas-liquid flow within the packing layer, effectively increasing the media contact area and mass transfer efficiency. The blade thickness ranges from 0.6mm to 1.0mm, depending on the sphere diameter, balancing structural strength and permeability.
