Dispensing – With material treatment or conditioning means
Patent
1981-08-19
1985-08-20
Rolla, Joseph J.
Dispensing
With material treatment or conditioning means
1374625, 137504, 137538, 239124, F04C 1504
Patent
active
045359199
ABSTRACT:
A hot melt foam adhesive system including a gear pump wherein gas is mixed under pressure into the molten adhesive and is driven into solution with the adhesive. The adhesive/gas solution is supplied at a relatively high pressure to a valved dispenser or gun from where it is dispensed onto a substrate. As the adhesive/gas solution emerges from the dispenser, the gas comes out of solution but remains entrapped in the adhesive, thereby forming an adhesive foam. The system includes a recycle flow line or hose for returning adhesive/gas solution from the dispenser to the pump. Within this recycle flow line there is a pressure regulator responsive to flow changes or viscosity changes of the adhesive/gas solution for maintaining a fixed back pressure in the system, thereby enabling the system to maintain a fixed and uniform flow rate from the dispenser during all operating conditions of the dispenser.
REFERENCES:
patent: 2011333 (1935-08-01), Clifton
patent: 2616445 (1952-11-01), Gaddoni
patent: 3806037 (1974-04-01), Loewenkamp
patent: 3892339 (1975-07-01), Idler
patent: 4059466 (1977-11-01), Scholl et al.
patent: 4059714 (1977-11-01), Scholl et al.
patent: 4200207 (1980-04-01), Akers et al.
patent: 4237922 (1980-12-01), Maier
Handren Frederick R.
Nordson Corporation
Rolla Joseph J.
LandOfFree
Hot melt adhesive system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hot melt adhesive system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hot melt adhesive system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-556230