Winding – tensioning – or guiding – Convolute winding of material – With tearing or breaking
Patent
1992-07-09
1994-11-29
Jillions, John M.
Winding, tensioning, or guiding
Convolute winding of material
With tearing or breaking
2425261, 2425421, 2425422, B65H 1930
Patent
active
053682521
ABSTRACT:
A machine and process for the production of rolls or logs of web material wherein web material is fed through a nip (5) formed between two winding rollers (1, 3) and wound around a core to form a roll or log (R) within a winding space defined by said two winding rollers and by a third roller. At the end of the winding of a log, the third roller (7) is temporarily accelerated to locally increase the speed of the web and to put the web material in tension between the third roller and one of said winding rollers. The tearing of the web material takes place because at that moment the incoming web is pinched between a new core and the one winding roller on which the material is driven. Transverse perforations can be made in the web by a perforating group. The third roller speed change is controlled by an epicyclic gear train and a controlling motor. The cyclical speed change of the third roller is done in synchronism with the perforating group.
REFERENCES:
patent: 4783015 (1988-11-01), Shimizu
patent: 4828195 (1989-05-01), Hertel et al.
patent: 5137225 (1992-08-01), Biagiotti
Bouda Francis J.
Fabio Perini S.p.A.
Jillions John M.
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