Historically phosphor-bronze and stainless steel were used to weave polyester forming fabrics. Increasing paper machine speeds as well as demand for improved paper properties led to a change in the raw material speeds as well as demand for improved paper properties led to a change in the raw materials employed which starts in the early 1960s with the use of synthetic materials, polyamide and primarily polyester.

                                     

By using plastics, product lifetimes increased significantly, while at the same time problems arose such as stretching of the polyester forming fabric in the machine direction (MD) and narrowing in the cross machine direction (CD). So it became necessary to introduce new manufacturing processes such as heatsetting of the woven structure. Due to the change to plastic materials, welding technology could no longer be used so an entirely new seaming technology also had to be developed. 

Since this time, the fundamental manufacturing process chain of polyester forming fabrics has remained the same. It consists of:
 Warping (winding up MD yarns on sectional warp beams)
 Weaving (interlacing MD and CD yarns)
 Seaming (forming an endless loop)
 Heatsetting (locking the knuckles in the weave)
 Finishing/packing (sanding the surface, width determination, marking).

Anna
Sales Department
Hebei Defeng Polyester Fiber Co., Ltd
Add: Jingjiu Railway west, wugong town, Raoyang County
TEL: 86-311-67699480
FAX: 86-311-67699480
Website: www.china-polyestermesh.com.
E-mail:anna@china-polyestermesh.com

Tag: polyester forming fabrics