抄録
Toyobo has developed an electret air filter using our own advanced polymeric fiber production technology and itsstatic electricity permanent electrification technology. This product has been producing and marketing under thetrade mark of Elitolon®. Because the static electricity in the Elitolon®fiber makes it possible to collect atmosphericdust from the air extremely effectively, a high collection efficiency can be realized with a low pressure drop.Elitolon®has been originally classified into three types which are A-type, AA-type and NA-type. A-type, AA-type andNA-type are made by spunbonded fibers, meltblown fibers and film split fibers respectively. Toyobo has developed anew static electricity permanent electrification technology. Using this prominent technology, we lately commercial-ized Elitolon®R-type which contains a considerably greater amount of electric charge than conventional Elitolon®.
