Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1987-11-30
1989-08-01
Levy, Stuart S.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 56A, 242 65, 226 94, B65H 1120
Patent
active
048528200
ABSTRACT:
A method of winding a continuously moving web, such as a flexible polymer film, by forming leading web edges and contacting them in sequence with a number of cores for adhesion thereon so as to start winding consecutive web portions onto the cores; when a web portion of a predetermined length has been wound onto a given core, the web is cut to form both the trailing edge of the wound web portion as well as the leading edge of the next web portion; instead of using a conventional sticky material, such as an adhesive tape, for adhesion of each leading edge of the web on the corresponding core for initiating winding thereof an electrostatic potential difference is provided between the core surface and the leading edge so that the latter will be caused to electrostatically adhere to the core surface.
An apparatus for use in this method comprises a cutting device for separating the moving web and for forming the trailing edge of a preceding portion of the web as well as the leading edge of the next web portion; and a support for rotatably holding a subsequent core close to the web when the next leading edge is formed; the apparatus includes a generator for producing an electrostatic potential difference between each leading edge and the corresponding core for electrostatically adhering the leading edges of the web onto the empty cores.
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patent: 4191341 (1980-03-01), Looser
patent: 4458852 (1984-07-01), Calvert et al.
patent: 4487377 (1984-12-01), Perini
patent: 4678133 (1987-07-01), Suzuki
duBois Steven M.
Kleeman Werner W.
Levy Stuart S.
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