Papermaking Grade CMS is sodium carboxymethyl starch, a modified starch etherified with carboxymethyl groups. It is used in the papermaking industry as a functional additive for fillers, pulp additives, surface sizing, and coating adhesives.
In paper production, CMS helps improve thickening and binding effects, paper gloss, color performance, printing performance, toughness, and abrasion resistance. It can also support retention and filtration when used as a pulp additive, and improve dry strength, wet strength, oil resistance, ink absorption, and water resistance when used in surface sizing.
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| CMC For Paper Coating | Heat Transfer Paper CMC | Paper Making CMC |
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| Paper Surface Sizing Agent | Papermaking Grade CMC | Ultra Low Viscosity CMC |
Applications in Surface Sizing
1. Has good rheological and film-forming properties;
2. Reduce the paper surface pores and improve the oil resistance of the paper;
3. Increase the brightness and gloss of the paper;
4. Increase the stiffness of the paper, smoothness, control curl;
5. Improve the surface strength and abrasion resistance of the paper, reduce the lint and powder, and improve the printing quality.
Applications in Pigment Coating
1. Control and adjust the rheology of the coating and the dispersion of the pigment, and improve the solid content of the coating;
2. Make the coating have pseudoplasticity and improve the coating speed;
3. Enhance the water retention of the coating and prevent the migration of the water-soluble adhesive;
4. Has a good film-forming, improve coating gloss;
5. Improve the retention rate of brighteners in coatings and improve the whiteness of paper;
6. Improve the lubrication performance of the coating, improve the quality of the coating, and extend the service life of the scraper.
Applications in the Addition of Pulp
1. Improve refining efficiency, promote fiber refinement and shorten beating time;
2. Adjust the internal potential of the pulp, evenly disperse the fibers, improve the "papermaking performance" of the paper machine, and further improve the paper sheet forming;
3. Improve the retention rate of various additives, fillers and fine fibers;
4. Increase the binding force between fibers and improve the physical properties of paper;
5. Combined with dry and wet strength agent, it can improve the dry and wet strength of the paper;
6. Protect the internal sizing agent such as rosin and AKD to enhance the sizing effect.
Technical Indicators
TYPE | Viscosity (mPa.s) | pH | Degree of Substitution (D.S.) | Loss on Drying (%) | |||
Min. | Max. | Concentration | Min. | Max. | |||
5G | 33 | 90 | 4% | 6.0-8.5 | 0.9 | 1.1 | ≤10 |
10G | 110 | 180 | 4% | 6.0-8.5 | 0.9 | 1.1 | ≤10 |
20G | 220 | 450 | 4% | 6.5-8.5 | 0.9 | 1.1 | ≤10 |
QM8G | 220 | 450 | 2% | 6.0-8.5 | 0.8 | 0.9 | ≤10 |
QM8-1 | 550 | 1170 | 2% | 6.5-8.5 | 0.7 | 0.9 | ≤10 |
QM8-1G | 550 | 1170 | 2% | 6.5-8.5 | 0.7 | 0.9 | ≤10 |
QX-150 | 1200 | 2000 | 4% | 6.0-8.5 | 0.7 | 0.9 | ≤10 |
QX-300 | 2000 | 4000 | 4% | 6.0-8.5 | 0.7 | 0.9 | ≤10 |
*We can customize according to the client's required specifications.
Papermaking Grade CMS can be used in different papermaking processes to support paper quality and production performance.
Acts as a stabilizer when added to fillers
Enhances thickening and binding effects
Helps produce glossy and vibrant paper
Improves printing performance
Increases paper toughness and abrasion resistance
Improves retention and filtration as a pulp additive
Supports paper dry strength and wet strength in surface sizing
Helps improve oil resistance, ink absorption, and water resistance
Enhances paper production and performance when used in coating adhesives
When added to fillers, Papermaking Grade CMS acts as a stabilizer. It helps enhance thickening and binding effects, supporting glossy and vibrant paper appearance. It also contributes to improved printing performance, toughness, and abrasion resistance.
As a pulp additive, CMS helps improve retention and filtration effects. This makes it suitable for papermaking processes where stable additive performance and better pulp processing behavior are required.
Papermaking Grade CMS can be used in surface sizing to improve paper strength and surface performance. It helps boost dry strength and wet strength, while also improving oil resistance, ink absorption, and water resistance.
When used in coating adhesives, CMS helps enhance paper production and paper performance. Its thickening and binding functions support coating-related processing requirements in papermaking applications.
Learn how Papermaking Grade CMS supports filler addition, pulp processing, surface sizing, and coating adhesive applications in paper production.
Papermaking Grade CMS can be customized according to the client’s required specifications. Different papermaking processes may require different viscosity, pH, DS, moisture level, and application performance.
For filler addition, pulp additive use, surface sizing, and coating adhesive applications, customers may have different requirements for thickening, binding, retention, filtration, strength improvement, ink absorption, and water resistance. Based on these needs, Sentai can provide specification adjustment and product selection support to help match the CMS product with the customer’s papermaking process.
If your paper production process has specific requirements for viscosity, degree of substitution, moisture, or application performance, customized specifications can be discussed according to your production needs.
Papermaking Grade CMS is sodium carboxymethyl starch, a modified starch etherified with carboxymethyl groups. It is used as a functional additive in the papermaking industry.
Papermaking Grade CMS is used in fillers, pulp additives, surface sizing, and coating adhesives. It helps improve thickening, binding, retention, filtration, paper strength, printing performance, oil resistance, ink absorption, and water resistance.
When added to fillers, CMS acts as a stabilizer. It enhances thickening and binding effects, helping produce glossy and vibrant paper while improving printing performance, toughness, and abrasion resistance.
As a pulp additive, CMS helps improve retention and filtration effects in papermaking processes.
Yes. Papermaking Grade CMS can be used in surface sizing to improve paper dry strength, wet strength, oil resistance, ink absorption, and water resistance.
The listed technical indicators include viscosity of 10–300 mPa.s for a 2% solution at 25℃, pH 7.0–11.0, DS 0.3–0.85, and moisture ≤12.0%.
Yes. Papermaking Grade CMS can be customized according to the client’s required specifications, including requirements related to viscosity, DS, moisture, and application performance.
