Recent content by Sunflame

Hey moltenmetal, Indeed english is one of my languages and not the primary. Anyway you understood the problem well. I may be rethinkink the diameter of the rollers, but in the end it comes down to what temperature is to be expected in the non-heated 40cm middle section just by the conductivity...

Yes these would do the compacting also.

Fibres are polyester/cotton mix all passing tearing drums, with average denier 1,7 (gram/9000 meter). To reach 1mm thickness the web is compressed from a 10mm thickness batt so most of the air is gone. Maybe we can pre-heat the web with infra heaters before entering these heated rollers

The web is 200 gramm/square meter, that is 200 kg/m3, it may change the equation to our favor?

Workingh width is 1 meter. Heat difference on the tube is not a problem, but ideally it reaches 180 degrees celius even onm the farthest parts from the heater.

Well yes, basically it is my question, whether four heaters with 1500w are enough to maintain the temperature, if the copper tubes "touches" the heater's surface which is 200 celsius, as copper is a good conductor of heat.

110 celsius degrees at least, probably more would be useful because of the speed which is 8 meter per minute.

Kudos for the quick replies. Okay sone more details below. The heaters are 1500w each basically in contact with the copper tube. The heaters are capable of reaching 200 celsius degrees on their own. For our application we have to melt low melt polyester fibres in a mix nonwoven web compressed to...

Dear Engineers! I would like to heat two copper tubes 1 meter long each to about 200 celsius degrees for a textile finishing application. The tube's diameter is 35mm, thickness is 1,5mm and an electric heater 300mm long is placed inside the tube on one side or both. As copper is a good heat...