Method for electrostatic charging of film

Details Method for electrostatic charging of film Method for electrostatic charging of film

B - Operations, Transporting

29

C

B29C 71/04 (2006.01) B01D 39/08 (2006.01) B01D 39/16 (2006.01) B01D 39/18 (2006.01) B03C 3/28 (2006.01) B29C 71/00 (2006.01) D04H 1/42 (2006.01) D04H 1/70 (2006.01) D04H 1/74 (2006.01) H01T 19/04 (2006.01) H05F 3/04 (2006.01) B29C 59/10 (2006.01)

Patent

CA 2146663

A method for electrostatically charging a film (12) by sequentially subjecting the film (12) to a series of electric fields such that adjacent electric fields have substantially opposite polarities. An apparatus for electrostatically charging a film (12) includes a pair of charging drums (20, 24), a pair of charging bars (22, 26) and a pair of positioning rollers (18, 28).

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