Hot melt adhesive dispensing system with laminated air heater

Details Hot melt adhesive dispensing system with laminated air heater Hot melt adhesive dispensing system with laminated air heater

B - Operations, Transporting

05

C

B05C 5/04 (2006.01) B05C 11/00 (2006.01) F24H 3/04 (2006.01) B05C 5/00 (2006.01)

Patent

CA 2267122

An air pre-heating apparatus useable for pre-heating air supplied to one or more hot melt adhesive dispensing nozzles mounted on an adhesive supply manifold. Air is supplied from an air supply inlet on an outer portion of an outer heating member to an air supply outlet on an inner heating member having a heater therein. The outer heating member formed of a plurality of laminated plates having one or more air flow paths, which include preferably a serpentine air flow path portion that increases the residence time of the air therein. The air is sunnlied through the apparatus against a decreasing temperature gradient whereby heat is increasingly added thereto before the air is supplied to the nozzles. The apparatus is preferably thermally isolated from the manifold to permit maintaining the pre-heating apparatus at a temperature different than a temperature of the manifold.

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