US 11,986,780 B2
Hot melt adhesive foam dispensing system
Laurence B. Saidman, Duluth, GA (US)
Assigned to Nordson Corporation, Westlake, OH (US)
Appl. No. 17/429,001
Filed by NORDSON CORPORATION, Westlake, OH (US)
PCT Filed Mar. 13, 2020, PCT No. PCT/US2020/022634
§ 371(c)(1), (2) Date Aug. 6, 2021,
PCT Pub. No. WO2020/190721, PCT Pub. Date Sep. 24, 2020.
Claims priority of provisional application 62/819,119, filed on Mar. 15, 2019.
Prior Publication US 2022/0105480 A1, Apr. 7, 2022
Int. Cl. B01F 23/23 (2022.01); B01F 23/235 (2022.01); B05B 12/00 (2018.01); B05B 12/10 (2006.01); B29C 44/34 (2006.01); B29C 44/60 (2006.01); B01F 25/62 (2022.01); B05B 7/00 (2006.01); B29C 44/46 (2006.01); G01F 15/02 (2006.01)
CPC B01F 23/235 (2022.01) [B05B 12/006 (2013.01); B05B 12/10 (2013.01); B29C 44/348 (2013.01); B29C 44/60 (2013.01); B01F 25/62 (2022.01); B05B 7/0025 (2013.01); B29C 44/3442 (2013.01); B29C 44/461 (2013.01); G01F 15/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dispensing system to dispense a hot melt adhesive foam onto a substrate, the dispensing 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;
a temperature sensor configured to detect a temperature of the solution;
a dispenser configured to receive the solution from the pump and dispense the solution to create the hot melt adhesive foam; and
a controller in signal communication with the temperature sensor and the pump, wherein the controller is configured to 1) instruct the pump to operate at a first speed; 2) receive a signal from the temperature sensor that is indicative of the temperature of the solution; and 3) instruct the pump to operate at a second speed that is different than the first speed in response to the signal.