Open-type Headbox for Paper Mills
Open headbox is a relatively original long net, suitable for low output, low physical index, vertical and horizontal tension requirements are not High, but superior to a round sizing method.
First：Open headbox is a relatively original long net, suitable for low output, low physical index, vertical and horizontal tension requirements are not High, but superior to a round sizing method.
1. can effectively disperse the fiber. The high turbulence headbox produces high-intensity micro-motion and can effectively disperse fibers. Prevent fiber precipitation in flocculation, which can effectively improve the strength of the paper.
2. Distribute the paper stock evenly along the paper machine. (Determining the horizontal quantitative distribution of the web)
3. the spray is stable, to ensure that the pulp speed and network speed are coordinated. (Determining the longitudinal quantitative distribution of the web)
Second：Air-cushion headbox For high-speed, high-quality paper with high physical requirements, the operating cost is high. The headbox is controlled by a pulping device, a homogenizing device, a lip device, a box body, a gas supply system, and a computer.
This headbox features:
1. all made of stainless steel
2. adapt to the range of vehicle speed
3. Effective attenuation pulse, stable slurry flow
4. full-width air cushion control pressure is more balanced, the quantitative difference is smaller
5. the air cushion pressure is automatically controlled according to the speed and flow changes and maintain a small amount of overflow
6. easy to clean