Headbox For Paper Making Line


The basic task of the headbox is to provide a good prerequisite for the forming of the paper sheet, that is, evenly distributed along the width of the paper machine to ensure uniform pressure, Speed uniform distribution, uniform flow uniformity, uniform distribution of fiber and fiber controllability and uniformity; effectively disperse the pulp fiber to prevent fiber flocculation, in accordance with the requirements of the process to provide and maintain a stable sizing head and pulp ratio.

The basic function of the headbox

(1) Provide a uniform and stable spray slurry flow to the entire width of the paper machine, to avoid horizontal pulp flow, non-directional tributary or longitudinal flow.
(2) Provide a geometric size of the required stability of the nozzle, from the temperature, pressure and lip opening degree of the impact.
(3) Form a flocculation of the least dispersed and good fiber suspension.
(4)Provide a process to meet the requirements of the banner quantitative distribution, drop point, spray angle and spray speed control.
(5) Provide convenient measures to keep the headbox clean and easy to operate and maintain.

So a good headbox need has the following features:

(1) Can create a uniform quantitative stability of the paper, and in the paper does not appear vertical flow.
(2) The lip area of the headbox should be free from pressure, temperature and lip opening to ensure uniform distribution of banners.
(3) Headbox should be avoided hanging pulp, pulp phenomenon.
(4) Easy to keep the box clean.
(5) Pulp speed ratio control.

Therefore, the headbox must be done:
(1) Make the slurry evenly distributed in the direction of the paper machine.
(2) The sprayed slurry should have a uniform velocity profile, concentration profile and turbulent profile.

Leizhan supply high quality Headbox to meet the paper making requirements, Leizhan headbox has all this features, if you have any needs feel free to contact us.