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US5686050A Method and apparatus for the electrostatic charging of a web or film 失效
纸幅或胶片静电充电的方法和装置

Method and apparatus for the electrostatic charging of a web or film
摘要:
A web or film is electrostatically charged by sequentially subjecting the web or film to a series of electric fields such that adjacent electric fields have substantially opposite polarities. Both a method and apparatus are disclosed for charging the web or film.
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