Monitoring a deposit on a travelling web

Details Monitoring a deposit on a travelling web Monitoring a deposit on a travelling web

1981-10-16

1983-11-29

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

53 53, 118688, 131 69, 131905, 131907, 131910, 156378, 324 61R, 427 8, 427 10, B32B 3124

Patent

active

044179340

ABSTRACT:
Method of monitoring a line of adhesive deposited on a travelling paper web to check for accidental omission of adhesive wherein the adhesive has a distinguishing relative permittivity and is sensed by a capacitive proximity sensor. The web may be plugwrap material for cigarette filter rod, the adhesive being provided to anchor filter tow in position when the plugwrap is wrapped around it. The method avoids various disadvantages associated with other automatic monitoring devices such as optical devices and infra-red devices.

REFERENCES:
patent: 3619328 (1971-11-01), Preston et al.
patent: 3899863 (1975-08-01), Seragnoli et al.
patent: 4251566 (1981-02-01), Gingerich
patent: 4272718 (1981-06-01), Kashiuchi et al.

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