Spatially distributed electrostatic perforation of moving webs

Electric heating – Heating devices – Electric arc-type devices

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73 38, 83 16, 219121EM, 264154, H05B 718

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active

043141420

ABSTRACT:
A method and apparatus for controlling the perforation of webs being moved in a longitudinal direction, by an array of electrodes spatially distributed in a transverse direction, wherein selected control electrodes are added to or removed from the electrode array to provide a transverse, or spatial, degree of control over web porosity. Synchronized sensing of multiple point transverse web porosity, combined with logic circuitry provides the controls for selection and actuation of the appropriate control electrodes. A combined temporal and spatial porosity control embodiment is disclosed. The combined and alternate embodiments described are particularly useful for perforating paper, film, and like materials, where a high degree of area-balanced porosity control is desired.

REFERENCES:
patent: 2372508 (1945-03-01), Mcaker
patent: 2982186 (1961-05-01), McKeen
patent: 3098143 (1963-07-01), Warmt
patent: 3167641 (1965-01-01), Parmele et al.
patent: 3348022 (1967-10-01), Schirmer
patent: 3358378 (1967-12-01), Downs
patent: 3475591 (1969-10-01), Fujii et al.
patent: 3783237 (1974-01-01), McArthur
patent: 4025752 (1977-05-01), Whitman
patent: 4029938 (1977-06-01), Martin
patent: 4035611 (1977-07-01), Martin et al.

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