Polyester Forming Wire of Good Sheet Support, High Evenness and Good Retention, Double Layer Forming Cloth, Exceptional Sheet Quality, Higher Sheet Solids, Lower Energy Costs and Improved Runnability
Made by Jurgens 13m Wide Weaving Looms and Austria Automatic Seaming Machine
The forming section consists of a long moving belt of fine mesh screen supported by rolls or foils. For many decades, this screen belt was made of bronze and called the “wire”. Today it is made of synthetic polymer — primarily polyester monofilament — and is called the forming fabric. Newer machines (gap formers) trap the slurry out of the slice between two forming fabrics. As the forming fabric moves along the forming section, water drainage is assisted by foils. The fiber then passes over the suction boxes to pull more water from the furnish. Still more water is removed at the couch roll just before the sheet leaves the forming section. At this point, the sheet consistency is about 20%.
Dedicated research has produced synthetic forming fabrics that yield improved drainage, higher production and longer life at a lower cost per ton of paper produced.
Keylife’s forming fabrics are available in a wide variety of meshes, depending on the type of paper produced. Coarse mesh fabrics are used to manufacture heavy paper grades such as those used in the production of corrugated boxes. Very fine mesh fabrics are required for lightweight paper, such as writing paper, book paper and magazine paper. The average life span of a forming fabric, depending on the type of paper, is approximately three months.
Keylife double layer forming fabric is an established double layer forming fabric family with qualities for all paper grades. It is available in 8 and 16 shaft designs with or without extra support strands on the paper side. The excellent raw material, which has the dimensional stability and abrasion resistance, is used to promote increased life potential and reduced energy consumption.
Double layer forming fabric is a 8/16-shed,double layer wire. This wire has an 8-shed weave with additional transverse strands, knows as support strands, on the paper side. With this design, a good sheet support, high evenness and good retention can be provided. At the same time, the wire has 16-shed big span weave on the back side and the bottom weft uses a coarse yarn to improve running life.
This double layer design brings a high dewatering capacity and stability in both MD and CD.
Scope of applications:
A double half layer forming fabric can be used to make printing paper, newspaper, offset paper, cardboard paper, tissue paper and the base pulp of the board paper.......
KEYLIFE is a professional manufacturer of industrial fabrics in China. The plant ranks one of top 5 in the industry in the country, with a registered capital of USD 19 Million and an annual sale over USD 10 Million.