Heating system in the manufacture of printed circuit boards, ass

Details Heating system in the manufacture of printed circuit boards, ass Heating system in the manufacture of printed circuit boards, ass

1989-07-21

1990-11-27

Bennet, Henry A.

Heating

Processes of heating or heater operation

Continous strip, strand or web passed longitudinally through...

432 11, 432 59, 432230, 432234, F27D 312

Patent

active

049732439

ABSTRACT:
Printed circuit boards, assemblies and the like are heated uniformly from edge to edge or to a desired lateral temperature profile while being conveyed through a heating area. The conveying systems reliably conveys circuit boards and the like through the heating area without dropping them. A rail heater is provided to heat rails supporting conveyors having pins to hold circuit boards and the like. A control for the rail heaters controls the temperature of the rails so the circuit boards are positively supported on the conveyors and have a uniform temperature profile or desired temperature profile from edge to edge.

REFERENCES:
patent: 3857690 (1974-12-01), Zappia
patent: 4306856 (1981-12-01), Arippol
patent: 4321031 (1982-03-01), Woodgate
patent: 4338078 (1982-07-01), Lampkin
patent: 4486172 (1984-12-01), Dunning
patent: 4504008 (1985-03-01), Kent et al.
patent: 4832249 (1989-05-01), Ehler

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