Hosea chem® sodium carboxymethyl cellulose (CMC) is a kind of efficient papermaking auxiliary, which can be used for pigment coating, pulp addition, surface sizing and other processes. It has good dispersion, thixotropy and water retention, etc. The performance has won unanimous praise from the paper industry.
The main role of CMC in the paper industry
1. Pigment coating
Control and adjust the rheology of the coating and the dispersibility of the pigment, and increase the solid content of the coating;
Give the coating pseudoplasticity to achieve high-speed coating of the coating;
Enhance the water retention of coatings and prevent the migration of water-soluble adhesives;
·It has good film-forming properties and improves the gloss of the coating;
Improve the retention rate of brighteners in coatings and improve paper whiteness;
·Improve the lubricating properties of the coating, improve the coating quality and prolong the service life of the scraper.
·General dosage: 0.3-1.5%, according to different types of coated paper, coating formulation and paper machine speed, choose different models and dosages.
2. Add in pulp
Improve refining efficiency, promote fiber refinement, and shorten beating time;
Adjust the electric potential in the pulp, disperse the fibers evenly, improve the papermaking performance of the paper machine, and further improve the sheet forming;
Improve the retention rate of various additives, fillers and fine fibers;
·Increase the bonding force between fibers and improve the physical properties of paper;
·Use in combination with dry and wet strength agents to improve the dry and wet strength of the finished paper;
·Protect rosin, AKD and other internal pulp sizing agents to enhance the sizing effect;
· Reduce pollution load.
·General dosage: 0.05-0.3%, the specific dosage is determined according to different paper types, vehicle speeds and requirements.
3. Surface sizing
·Good rheology and film-forming properties;
Reduce the pores on the paper surface and improve the oil resistance of the paper;
Increase the brightness and gloss of the paper;
·Increase the stiffness and smoothness of the paper and control the curl;
·Improve the surface strength and abrasion resistance of paper, reduce lint and powder loss, and improve printing quality.
·General dosage: used in combination with others, the dosage is 10-30% of the total amount of glue. If used alone, it is generally formulated as a 0.2-1.0% solution.