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Bull. Spec. CORESTA Congress, Guangzhou 1988, p. 173, T-21

Overcoming web feed problems using pneumatic transportation

CAHILL M.J.
Molins University of Warwick Science Park, Coventry, UK
The reliability of cigarette paper feeding onto a making machine is heavily influenced by the quality of the paper and bobbin winding. Low reliability of feed will cause materials wastage and low machine efficiency. Molins has been developing pneumatic paper feeding techniques which are more tolerant of variable quality paper and bobbins than the normal mechanical roller feeding techniques. On conventional methods, the variable winding results in paper wander and tension variability. The pneumatic feed is less sensitive to wander and the increased resilience reduces the effect of tension shocks. The paper describes the range of techniques which Molins use for pneumatic feed, the results of tests to measure the effects on wander and tension and the hardware used.