B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
242/55
B65H 19/18 (2006.01) B29C 65/02 (2006.01) B65H 21/02 (2006.01)
Patent
CA 1056356
ABSTRACT OF THE DISCLOSURE The present invention provides a method of splicing a first web of material passing from a first roll to a processing machine and provided with a regular pattern in register with a second web of material wound onto a second roll in such a way that the peripheral length of the roll does not correspond to an integral number of pattern divisions, the pattern of the first web passing through the machine being caused to coincide with the pattern of the second web on the second roll which is rotating at a constant speed during at least part of each roll revolution by momentarily changing the speed of the first web, whereupon the webs are spliced. The present invention also provides an arrangement for splicing a first web of material passing from a first roll to a processing machine and provided with a regular pattern in register with a second web of material wound onto a second roll in such a way that the peripheral length of the roll does not correspond to an integral number of pattern divisions, the said arrangement comprising a roll stand with holders for both the first and the second roll, an arrangement for splicing the end of the first web with the end of the second web and a driving system for rotating the second roll at a constant speed, a system adapted to change the speed of first web passing through the machine momentarily during each revolution of the second roll of material so that during part of each revolution of the second roll the said first web moves at a speed corresponding to the peripheral speed of second roll, and a system for causing the pattern of the first web which passes through the machine to be in register with the second web of material wound on the second roll.
237415
Olsson John W.
Swede Harald G.
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