The First Twin Wire machines were constructed so that the headbox sprayed a vertical stream between the polyester mesh at the nip of twin breast rolls.  The paper web was then further drawn vertically, while vacuum boxes operate from both sides.  Newer designs returned to a horizontal feed system with both forming wires traveling horizontally and vacuum boxes drawing suction from below and above the web. 

After the paper has been partially dried while on the polyester fabric, it still contains vast amounts of water which must be removed to stabilize and strengthen the paper.  The first of these additional drying sections is the press section. The press section or “wet-press section” contains several drying felts and suction pick-up (vacuum) rolls, which remove water from the paper mat until it reaches about 50%. 

 Although the polyester mesh can support its own weight, carrier felts support the web, while at the same time removing water from the surface and directing it through a series of vacuum rollers.  The transference of moisture from the web to the felt is enhanced by the nips (the contact points between the rollers) of the rollers, suction boxes, and rollers.

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:Polyester Mesh, Polyester Fabric