Method and apparatus for regulating the permeability of wrapping

Details Method and apparatus for regulating the permeability of wrapping Method and apparatus for regulating the permeability of wrapping

1977-12-27

1986-01-07

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

83 30, 83 73, 83365, 131281, 156252, 156353, 156378, 156379, 156513, 219121LL, 219384, 428131, 493 10, B32B 3112

Patent

active

045632286

ABSTRACT:
A continuous web which is drawn off a roll is perforated on its way toward the wrapping station of a machine for the making of plain or filter tipped smokers' products or filter rod sections. The perforating device is adjustable by a control system which receives signals from a photoelectronic testing unit serving to monitor the permeability of successive increments of the web between the perforating device and the wrapping station. The combined cross-sectional area of holes per unit area of the web is increased or reduced, depending upon whether the monitored permeability is less than or exceeds a preselected optimum permeability.

REFERENCES:
patent: 2994783 (1961-08-01), Looschen
patent: 3167641 (1965-01-01), Parmele et al.
patent: 3283636 (1966-11-01), Huck
patent: 3351740 (1967-11-01), Heuer
patent: 3622751 (1971-11-01), Larive et al.
patent: 4046614 (1977-09-01), Zahn et al.
patent: 4090826 (1978-05-01), Hinzmann
Chemical Engineers' Handbook, Perry & Chilton, Fifth Edition, McGraw-Hill Book Company, 1973, pp. 22-4 and 22-5.
Marks' Mechanical Engineers' Handbook, T. Baumeister, Sixth Edition, McGraw-Hill Book Company, 1958, pp. 16-31 to 16-33 and 16-49.

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