Nordson Corporation

Jeffrey E Owen

Leslie J Varga

David R Jeter

Peter W Estelle

Robert J Woodlief

Charles P Ganzer

Justin A Clark

Steven Clark

Raymond M Fetcenko

Brian Burkley

John Matthew Riney

Enes Ramosevac

Leonard J Lanier

Mario Romanin

Scott B Means

Derrick O'Kelley

Brian R Sosebee

Ronald Ramspeck

James R Beal

John Daniels

Ronald M Ramspeck

An adhesive dispensing device () includes a melt module () including a housing () that defines a receiving space to receive adhesive and a heater () to heat the housing to melt the adhesive, and a control module () releasably connected to the melt module. The control module includes a controller () to automatically recognize a characteristic associated with the melt module and operate the melt module using instructions stored on the controller that correspond to the characteristic of the melt module. A method of operating the adhesive dispensing device is also disclosed.

Modular adhesive dispensing device

Foam dispensing systems and methods are disclosed. Such systems and methods may include a foamed material dispenser, a dynamic mixer having a gas input, a process material input, and a foamed material output. The foamed material output may be in fluid communication with the foamed material dispenser. A pump having an output may be in fluid communication with the process material input of the dynamic mixer, and a gas injection valve may be in fluid communication with the gas input of the dynamic mixer. A gas pressure regulator may be coupled between the pressurized gas supply and the gas injection valve, and a gas injection cycle timer may be operatively connected to the gas injection valve, the gas injection cycle timer causing the gas injection valve to pulse open and closed to send pulses of pressurized gas into the dynamic mixer through the gas input.

Foam mixing system and methods

An adhesive dispensing device includes a heater unit for melting adhesive, a fill system communicating with a receiving space for feeding the heater unit, and a reservoir for receiving melted adhesive from the heater unit. The dispensing device also includes a capacitive level sensor located along a sidewall of the receiving space such that the level of adhesive in the receiving space can be detected by sensing the difference in dielectric capacitance where the adhesive is located compared to where air acts as the dielectric. The size of the driven electrode produces a broader sensing window capable of generating multiple control signals corresponding to different fill levels of adhesive. The receiving space and reservoir are minimized in size so that adhesive is not held at elevated temperatures long enough to char or degrade.

Adhesive dispensing device having optimized reservoir and capacitive level sensor

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Suwanee, GA, United States of America

Jeffrey E Owen