PTFE Tape Calender machine is another key machine of PTFE thread seal tape production line, which is mostly two-roll calenders.

The two rolls rotate at the same speed but in opposite directions. It make suret that causing the PTFE powder material to be compressed and thinned.

The key technical parameters of the calender include roll diameter, roundness, width, gap range, speed range, and heating method.

The surface of the rolls must be smooth and chrome-plated, polished to a mirror-like finish.

The roll diameter should be no less than 30 cm.

The heating methods can include hot water,  electric heating. 

The lower roll of the PTFE Tape Calender machine is usually fixed. 

The surface of the lower roll is typically machined into an arc shape.

The upper roll is adjusted by  motors that moves it up and down to regulate the roll gap.

The rolls are supported by ball bearings to ensure stable and efficient operation.

The main parameters of the calendering process are the speed of the calender roll and its surface temperature。

Which is usually difficult to pre-determine its specific parameters, because it has a great relationship with the performance of the parison.

Increase the surface temperature of the calender roller is conducive to the parison soften and reduce the calendering pressure。

But if the temperature is too high will make the volatilization of the extruder too fast, resulting in calendering film tearing.