Hot melt adhesive foam dispensing system
AssigneeNordson Corporation
InventorsBrian Burkley, Laurence B. Saidman, Howard B. Evans, III
Life of this patent
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Abstract
A dispensing system for dispensing hot melt adhesive foam onto a substrate is described. The dispensing system comprises a pump having a first input to receive a hot melt adhesive and a second input to receive a gas, where the pump mixes the hot melt adhesive and the gas to produce a solution and pump the solution at a volumetric flow rate. The dispensing system also includes a valve to control an amount of the gas provided to the pump from the second input, a flow meter to measure the volumetric flow rate of the solution pumped by the pump, and a dispenser to receive the solution from the pump and dispense the solution to create the hot melt adhesive foam.
Claims20
A dispensing system for dispensing hot melt adhesive foam onto a substrate, the system comprising:
- a pump having a first input configured to receive a hot melt adhesive and a second input configured to receive a gas, wherein the pump is configured to mix the hot melt adhesive and the gas to produce a solution and pump the solution at a volumetric flow rate;
- a valve configured to control an amount of the gas provided to the pump through the second input;
- a flow meter configured to measure the volumetric flow rate of the solution pumped by the pump;
- and
- a dispenser configured to receive the solution from the pump and dispense the solution to create the hot melt adhesive foam.
A method of dispensing hot melt adhesive foam onto a substrate, the method comprising:
- receiving a hot melt adhesive from a hot melt adhesive source;
- receiving a gas from a gas source;
- mixing the hot melt adhesive and the gas to produce a solution;
- pumping the solution from a pump to a dispenser at a volumetric flow rate;
- measuring the volumetric flow rate of the solution via a flow meter;
- and
- dispensing the solution to create the hot melt adhesive foam.
Dependencies are inferred from the claim text.