4400/350 Three Multilayer Test Liner Cardboard Paper Machine for Paper Mill Machinery
Three multilayer test liner cardboard paper machine, with a wire paper width of 4400mm and a maximum working speed of 350m/min. It is mainly used for making linerboard. The paper machine is mainly divided into the following parts: headbox, fourdrinier wire section, press section, front drying section, oblique surface sizer, rear drying section, calendering section and coiling section.
1. Headbox: There are three sets of air-cushion headboxes, corresponding to the surface mesh, core mesh and bottom mesh respectively. By controlling the gas pressure in the headbox, the sizing head of the online slurry can be controlled and stabilized.
2. Wire part: three layers of nets, namely surface wire, core wire, bottom wire, main components: breast roll, forming plate, dewatering plate, vacuum box, compound roll, vacuum couch roll, wire drive roll, guide wire Rollers and racks, etc. The surface layer wire, the core layer wire and the bottom wire are each equipped with a forming wire.
3. Pressing section: divided into one press, two presses, three presses and four presses. The first press is a vacuum press with a vacuum suction roller, the upper roller is a rubber-coated metal roller, the lower roller is a vacuum press roller, and is equipped with upper and lower felts; the second press and the third press are large-diameter presses, each with upper and lower Rubber-coated metal rollers with top and bottom felts. The first press, the second press and the third press are equipped with felt guide rollers and felt suction boxes. The first press, the second press and the third press are pressurized by corrugated pneumatic tires. The fourth press is a glossy press, the upper roller is a stone roller, the lower roller is a rubber-coated metal roller, without a felt, and the pressurizing method is a corrugated pneumatic tire.
4. Front drying part: Φ1500/Φ1800 drying cylinder, group transmission. With closed air hood.
5. Inclined surface sizing machine: one chrome-plated metal roller and one rubber-coated metal roller. The surface sizer pressurization method is the corrugated pneumatic tire.
6. After drying part: Φ1500/Φ1800 drying cylinder, group transmission. With closed air hood.
7. Calendering section: double-roller calender, the upper and lower rolls are metal rolls, and the pressure method is corrugated pneumatic tire pressure.
8. Coiling Department: Pneumatic horizontal reeling machine, the pressurizing method is cylinder pressurization.