I am looking for polyurethane foam/sponge material with pore sizes up to 1000 ppi. In other words the pore size should be in the range of 20 micrometer to 100 micrometer. Thank you in advance.
Thank you for your reply. I contacted a few of local supplier but they can not provide polyurethane foams if ppi value exceeds 120. What I am looking for is at least 250 ppi. For such value I could not find any supplier yet.