The wire part of the paper machine is designed to remove water from the paper pulp. The paper pulp flows out of the headbox onto a fourdrinier wire, where it is dewatered due to filtering water through the wire and a layer of settled fibers.
The fourdrinier wire is stretched from the chest roll to the suction roll (couch roll) and the wire roll on the other side. Dewatering elements are located between the chest and couch roll. They are hydrofoils types and are coated by plastic or ceramic materials. A layer of paper pulp moves along the hydrofoils, transported by the fourdrinier wire, and upon contact, the pulp is gradually dewatered.
The fourdrinier wire of the paper machine is moved, adjusted and tensioned by means of a set of rolls at the bottom of the wire frame. A control device for the wire movement is installed at the bottom of frame to ensure that it does not go beyond the axis of the machine. Manual or automatic wire stretchers are used to provide a available wire tension to the required value (2.5 – 8 N / mm). During back running the wire is cleaned with water showers. It helps to remove the fibers ,dirt spots, chemicals and deposits to improve machine runnability and prolongs fabric lifetime by maintaining wire or felt an air permeability.
The width of the paper is ensured by the formatted showers that cut the edges of the paper web.
The wire section is cantilever design allows for quick wire replacement.
The frame is made of carbon steel lined with corrosion-resistant steel sheets.
The wire section can consist of one bottom fourdrinier or two (bottom and top) fourdriniers for machines with reel widths from 1680 to 4200 mm.
It is possible to deliver a complete set of fourdrinier or separately by parts.