B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 19/18 (2006.01) B65H 21/00 (2006.01)
Patent
CA 2288523
A splicing apparatus for an unwinder automatically splices the trailing end of a web from one roll to the leading end of a web from a second roll. A pair of roll support frames are mounted for movement between an unwinding position in which a roll on the support frame is aligned with the path of web movement and a loading position in which a roll on the support frame is laterally offset from the path of web movement. A vacuum retainer is mounted on each of the roll support frames for retaining a leading edge of the web of a new roll. A movable vacuum belt is mounted adjacent the path of web movement, and a slitter is mounted upstream of the vacuum belt. When a first roll in the unwinding position is to be replaced, the first web is secured bar the vacuum belt and cut by the slitter to form a trailing end. The roll support frames are moved to bring a second roll into the unwinding position. The leading end portion of the second web is adjacent the trailing end portion of the first web. A ply bonder presses the two webs against the vacuum retainer to bond the webs as the vacuum belt advances the trailing end of the first web.
Klimek Wayne D.
Moran Daniel J.
Finlayson & Singlehurst
Paper Converting Machine Company
LandOfFree
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