Where I work we make paper cups. The ones we are having trouble with use electric heaters, with compressed air blown over the heaters to create forced hot air, that blows out of small holes in a diffuser.
That forced hot air melts a poly coating on the paper, and that part of the cup is then joined to another part of the cup which was heated the same way.
We frequently burn up these heaters because mechanics either turn the heat up too high (1250 degrees), or turn the air down too low (500CFH).
I am looking for some training material I can use to explain the physics behind air flow through a restricted nozzle, and the interrelationship between the major factors, heat, air flow, air volicity, dwell time (machine speed), diffuser gap from the diffuser to the paper, and etc.
I want to be able to explain how it should work, and what it's peak limits are, to prevent burning out the heaters.
If anyone knows of a link or website which has something similar, I would apprecaite the help.
Thanks,
Gary
That forced hot air melts a poly coating on the paper, and that part of the cup is then joined to another part of the cup which was heated the same way.
We frequently burn up these heaters because mechanics either turn the heat up too high (1250 degrees), or turn the air down too low (500CFH).
I am looking for some training material I can use to explain the physics behind air flow through a restricted nozzle, and the interrelationship between the major factors, heat, air flow, air volicity, dwell time (machine speed), diffuser gap from the diffuser to the paper, and etc.
I want to be able to explain how it should work, and what it's peak limits are, to prevent burning out the heaters.
If anyone knows of a link or website which has something similar, I would apprecaite the help.
Thanks,
Gary