초록 ▼

An adsorptive filter material having deodorizing, degassing and decolorizing properties which comprises an adsorptive sheet layer of active carbon fibers of which the active carbon fiber content is not less than about 20% by weight and reinforcing sheet layers of fibers having a single yarn strength

An adsorptive filter material having deodorizing, degassing and decolorizing properties which comprises an adsorptive sheet layer of active carbon fibers of which the active carbon fiber content is not less than about 20% by weight and reinforcing sheet layers of fibers having a single yarn strength of not less than about 2 g/denier and an elongation of not less than about 2% provided on the surfaces of the adsorptive sheet layer, the adsorptive sheet layer and the reinforcing sheet layers each weighing from about 20 to 2,000 g/m2.

대표청구항 ▼

An adsorptive filter material which comprises an adsorptive sheet layer of active carbon fibers having a thickness of about 0.5 to 20 mm and an active carbon fiber content of not less than 20% by weight, said active carbon fibers having an adsorption rate constant of benzene of not less than about 0

An adsorptive filter material which comprises an adsorptive sheet layer of active carbon fibers having a thickness of about 0.5 to 20 mm and an active carbon fiber content of not less than 20% by weight, said active carbon fibers having an adsorption rate constant of benzene of not less than about 0.2 per minute, and reinforcing sheet layers of non-woven fabric provided on both surfaces of the adsorptive sheet layer, said reinforcing sheet layers having a pack density of about 0.03 to 0.10 g/cm3 and a thickness of about 0.5 to 20 mm, the fibers of said non-woven fabric having a single yarn strength of not less than about 2 g/denier and an elongation of not less than about 2%, the adsorptive sheet layer and the reinforcing sheet layers being needle-punched and each weighing from about 20 to 2,000 g/m2.