| User name | A bobbin paper factory |
Machine No. / type of (board) paper | Ring pressure requirement ≥ 18, interlayer requirement ≥ 350 |
Type / speed / width of paper machine | Seven garden net paper machines, 360 ~ 420g / m2, about 120m / min, with a daily output of 230 tons. |
| Slurry ratio | 100% national waste |
Addition process of various chemicals in pulp (addition position of chemicals and addition amount per ton of paper or pulp)
Dry strength agent (PAM): 15 ~ 20kg / t paper (different according to quantitative or size change)
Aluminum sulfate in pulp (alum): 5 ~ 8kg / t paper
Application effect of dry strength agent PAM:
① By adding PAM of our company into the slurry, the annular pressure and interlayer amplitude are increased by about 20%;
② Improve the retention of fine fibers, reduce the white water load and reduce the pressure of sewage treatment;
③ By adding PAM, customers further optimize the papermaking process (reduce the amount of inter layer spray starch);
④ Improve the operation of the paper machine, reduce paper breakage and improve the speed of the paper machine, and increase the production efficiency.
Headbox system analysis
| project | PH value | Conductivity US / cm | PCD ueq/1 | Copying temperature ℃ | |
| Net cage | 6.45 | 5000 | -350 | 50 | |
| plain water | 6.48 | 5200 | -390 | 50 |