Today, dryer screens with a permeability of approx in paper making machine. For our products,100-120 cfm are indispensable for single-tier dryer sections.Throughout the entire drying process, the sheet is held safely on the dryer screens.It is firstly by the vacuum generated in the gap between screen and box, and by the vacuum generated by the DuoStabilizer  in the screen guide roll  secondly.

It is mainly the permeability of a dryer screen which is responsible for papr drying in drying section. As we all know,the different surface properties of the dryer screen have a relatively negligible influence on the quantity of air carried. These are more important factors effect,when it comes to non-marking properties and the contact area between paper sheet and dryer screen.

Together with their sheet support function, polyester dryer fabrics should also absorb the sheet moisture inside the cavities of the screen except the material itself absorbing any moisture. But this moisture has to be released again in the free draws and pockets. Polyester spiral screens in paper machine drying section can have up to 70% more void volume, with a corresponding positive effect on drying capacity,compared to woven dryer screens.

Coco Qin
Sales Department
Hebei Defeng Polyester Fiber Co., Ltd
Add: Wugong Town West Raoyang County Hebei Province China
TEL: 0086-311-67699480
FAX: 0086-311-67699480
EAMIL: coco@china-polyestermesh.com 
Website: www.china-polyestermesh.com

Tag:Dryer screens,Polyester dryer fabrics