Technical foams - Import export

Opencell or closedcell polyurethane foams are available in all common densities and in different colours. The elastic polyether foams show a relatively high resistance to acids and caustic solutions. In addition, they are much more resistant to hydrolysis and ageing than polyester foams. Accordig to a special process called reticulation is used to subsequently open the pores to almost 100%. By this a pore structure of even, opencell filter foams in controlled pore sizes of between PPI 10 up to PPI 80 can be achieved (PPI = Pores per Inch). A benefit of the polyester foams is their shockdamping property. In addition, polyester foams are less susceptible to light ageing than polyether foams.