The selection of polyester dryer screen is according to the various paper machine parameters such as paper grades, dryers configuration, dryers temperatures, air balance in the hood etc. The design and materials of polyester dryer screen are also very important.

The permeability, design and materials of the dryer cloths should be adapted to make sure optimum drying from a drying section for a particular paper machine. The air permeability of the polyester dryer screen or felt has a great influence on the rate of evaporation of water. It is reduction in drying capacity of the polyester dryer screen if the permeability is decreased. The air permeability of polyester dryer screen range between 700-1000cfm is used on paper machine for producing higher gsm Kraft and board varieties. On the other hand, medium and high speed paper machine usually used 200-400cfm and below these rage used in lower speed paper machine. High numbers of contact areas with the drying surface ensure uniform drying.  Chosen proper dryer cloth improved paper quality and savings energy paper machine runnability, increased drying rate. 

What's more, the polyester dryer screen or felt should have the following parameters or features:  sheet support, heat transfer, fabric tension, aerodynamic properties, caliper, heat resistant, wet-resistant, easy to operation, durability, silent drive, should be less elongation at heat etc.

Bella 
Sales manger 
Hebei Defeng Polyester Fiber Co.,Ltd 
Add: Wugong town west, Raoyang county, Hengshui, Hebei, China 
Tel: 86-311-67699480 
Fax: 86-311-67699480 
Mail: bella@china-polyestermesh.com 
Website: www.china-polyestermesh.com 

Tags: polyester dryer screen, dryer cloths