초록

An air filter suitably usable in an air cleaner, room air-conditioner or especially in car air-conditioners in which air is driven at a high speed. The air filter is made of a pleated polyurethane foam having on one or both sides thereof a three-dimensional network skeletal structure of micro cells.

대표청구항 ▼

[ What is claimed is:] [1.] An air filters comprising:a polyurethane foam sheet having on at least one side thereof a three-dimensional porous network skeletal structure of micro cells;a non-solvent binder layer applied to and into a surface of said porous network skeletal structure of said polyuret

[ What is claimed is:] [1.] An air filters comprising:a polyurethane foam sheet having on at least one side thereof a three-dimensional porous network skeletal structure of micro cells;a non-solvent binder layer applied to and into a surface of said porous network skeletal structure of said polyurethane foam;a layer of adsorbent particles attached at one part thereof to said binder layer while a remaining part thereof is exposed, said adsorbent particles having a mean particle size ranging from 1/50 to 1/1.5 of a mean inter-skeletal distance of said polyurethane foam; anda combination of said polyurethane foam sheet, said binder layer, and said layer of adsorbent particles comprising a filter matrix, said filter matrix having a pleated configuration.