A filter for an electrostatic precipitator comprising: a plurality of spaced-apart, electrode films having electrical conductivity, arranged to be alternately powered at high and low electrical potentials, each of said electrode films having a leading edge, a trailing edge and two opposing side edges therebetween that extend in the direction of airflow; and first and second pluralities of spaced-apart, rigid isolation members bonded to each of the leading and trailing edges of the plurality of electrode films respectively, wherein each isolation member is bonded, via a substantially continuous, preferably flat, surface thereof, to at least some of said leading or trailing edges, thereby fixing the electrode films in the required spaced-apart arrangement thereof.

A filter for an electrostatic precipitator comprising: a plurality of spaced-apart, electrode films having electrical conductivity, arranged to be alternately powered at high and low electrical potentials, each of said electrode films having a leading edge, a trailing edge and two opposing side edges therebetween that extend in the direction of airflow; and first and second pluralities of spaced-apart, rigid isolation members bonded to each of the leading and trailing edges of the plurality of electrode films respectively, wherein each isolation member is bonded, via a substantially continuous, preferably flat, surface thereof, to at least some of said leading or trailing edges, thereby fixing the electrode films in the required spaced-apart arrangement thereof.

A discharge electrode with equal or better performance to conventional discharge electrodes, but at significantly lower cost uses carbon fiber composite tapes suspended around support rings attached to a support at the top and a bias at the bottom. The tape is in a loop and extends around the support rings, causing the rings to be pulled apart in tension by the bias to keep the tape taut. The tape, and preferably the top ring, and alternatively the lower ring, are conductively connected to a power supply.

An object of the present invention is to provide a low pressure loss filter having a high dust- and dirt-collecting capability and excellent workability and sustainability of collecting capability. The filter of the present invention is a filter having air channels formed using an electret sheet; a porosity of the electret sheet being from 1 to 70%; an air channel cross-sectional ratio of the filter being from 10 to 99%; and a volume charge density of the filter being from 10 to 5000 nC/cm.sup.3.

An object of the present invention is to provide a low pressure loss filter having a high dust- and dirt-collecting capability and excellent workability and sustainability of collecting capability. The filter of the present invention is a filter having air channels formed using an electret sheet; a porosity of the electret sheet being from 1 to 70%; an air channel cross-sectional ratio of the filter being from 10 to 99%; and a volume charge density of the filter being from 10 to 5000 nC/cm.sup.3.

A discharge electrode using carbon fibers, nanofibers and/or nanotubes to generate the corona discharge. The invention contemplates conductive fiber, such as carbon strands with or without a polymer matrix to form a composite, and a supporting configuration in which the strand is extended along or wrapped helically around a supporting rod that extends along the length of the electrode. A mechanical bias is applied to each strand to maintain tension on the strand. Preferably this includes coil springs extending between bushings mounted on the rod and moveable hemispherical supports slidably mounted on the rod that seat against the strand.

A filter for an electrostatic precipitator comprising: a plurality of spaced-apart, electrode films having electrical conductivity, arranged to be alternately powered at high and low electrical potentials, each of said electrode films having a leading edge, a trailing edge and two opposing side edges therebetween that extend in the direction of airflow; and first and second pluralities of spaced-apart, rigid isolation members bonded to each of the leading and trailing edges of the plurality of electrode films respectively, wherein each isolation member is bonded, via a substantially continuous, preferably flat, surface thereof, to at least some of said leading or trailing edges, thereby fixing the electrode films in the required spaced-apart arrangement thereof.

A filter for an electrostatic precipitator comprising: a plurality of spaced-apart, electrode films having electrical conductivity, arranged to be alternately powered at high and low electrical potentials, each of said electrode films having a leading edge, a trailing edge and two opposing side edges therebetween that extend in the direction of airflow; and first and second pluralities of spaced-apart, rigid isolation members bonded to each of the leading and trailing edges of the plurality of electrode films respectively, wherein each isolation member is bonded, via a substantially continuous, preferably flat, surface thereof, to at least some of said leading or trailing edges, thereby fixing the electrode films in the required spaced-apart arrangement thereof.

To provide an electric precipitator for a press mold, which can collect more reliably dusty foreign matter emitted during stamping process utilizing an electrostatic force, has excellent installability, and can be used safely. Provided is an electric precipitator for a press mold, the electric precipitator being used together with the press mold to collect dusty foreign matter emitted during stamping process by an electrostatic force and including: a laminated sheet in which a dust collection layer that holds the dusty foreign matter in contact, a first electrode layer, a second electrode layer, an insulation layer, and a close-contact fixation layer for installation on and fixation to a mold to be used are laminated; and a power supply device that applies voltages across the first and second electrode layers. The insulation layer at least has a first insulation layer that insulates the dust collection layer and the first electrode layer, a second insulation layer that insulates the first electrode layer and the second electrode layer, and a third insulation layer that insulates the second electrode layer and the close-contact fixation layer. The first and second electrode layers are films obtained by coating a polyethylene terephthalate (PET) base material with a conductive polymer and having a surface resistivity of 10.sup.4 to 10.sup.5 . A polyimide film having a base material thickness of 75 m is used for the second insulation layer. A press mold including the same is also provided.

To provide an electric precipitator for a press mold, which can collect more reliably dusty foreign matter emitted during stamping process utilizing an electrostatic force, has excellent installability, and can be used safely. Provided is an electric precipitator for a press mold, the electric precipitator being used together with the press mold to collect dusty foreign matter emitted during stamping process by an electrostatic force and including: a laminated sheet in which a dust collection layer that holds the dusty foreign matter in contact, a first electrode layer, a second electrode layer, an insulation layer, and a close-contact fixation layer for installation on and fixation to a mold to be used are laminated; and a power supply device that applies voltages across the first and second electrode layers. The insulation layer at least has a first insulation layer that insulates the dust collection layer and the first electrode layer, a second insulation layer that insulates the first electrode layer and the second electrode layer, and a third insulation layer that insulates the second electrode layer and the close-contact fixation layer. The first and second electrode layers are films obtained by coating a polyethylene terephthalate (PET) base material with a conductive polymer and having a surface resistivity of 10.sup.4 to 10.sup.5 . A polyimide film having a base material thickness of 75 m is used for the second insulation layer. A press mold including the same is also provided.