Adhesive consumption monitoring system

In a corrugator a system for monitoring a consumption of adhesive comprising:

• a source of adhesive, a pan for receiving said adhesive from said source, a system of pipes and valves for delivering said adhesive from said source to said pan, means for applying adhesive from said pan in limited amounts to crests of corrugated paper flutes, means for monitoring an application of adhesive to said crests comprising a graduated column for storing a known volume of said adhesive, sensor means associated with said graduated column for detecting upper and lower limits of said volume of adhesive stored therein, means responsive to said detection of said upper limit for substituting a delivery of said adhesive from said graduated column to said pan for said delivery of adhesive from said source via said system of pipes and valves to said pan, means responsive to said detection of said lower limit for returning said delivery of said adhesive from said graduating column to said source via said system of pipes and valves, and adhesive consumption detecting means jointly responsive to an amount of adhesive delivered from said column and to an amount of corrugated board manufactured during an interval while said adhesive is being delivered from said graduated column for determining the amount of adhesive applied to the crests of said paper flutes.