| 摘要 |
PROBLEM TO BE SOLVED: To provide an air cleaning filter, with respect to a filter installed in the inside of an electronic apparatus such as a copy machine, a printer, a computer and a projector, and used aiming at removing both components of gas and fine particles, having a sufficiently high dust collection amount, and excellent in fire retardancy.SOLUTION: An air cleaning filter is obtained by: making a filter material having a structure which comprises an electret sheet comprising at least four layers in which both outer layers are a long fiber nonwoven fabric, an electret layer and a reinforcement net are sandwiched between the layers, and each interlayer is integrated by entangling, and a deodorization sheet sandwiching a gas adsorption layer containing active carbon with a flame retardant fabric, and in which the deodorization sheet is laminated on a long fiber nonwoven fabric surface at a reinforcement net side of the electret sheet; and pleating the filter material. In the air cleaning filter, an interval between the long fiber nonwoven fabric at the reinforcement net side of the electret sheet, and the deodorization sheet is not bonded.SELECTED DRAWING: None |
