Papermaking Solutions

Landercoll^® Carboxymethyl Cellulose (CMC) for Papermaking

High-Performance Additive for Surface Sizing, Coating, and Pulp Enhancement

Landercoll^® Carboxymethyl Cellulose (CMC) from LANDU is a high-quality, multi-functional cellulose ether developed specifically for the papermaking industry.

It provides superior film-forming, thickening, binding, and water‑retention properties, offering exceptional performance in surface sizing, pigment coating, and pulp processing applications.

With excellent dispersibility, rheological control, and compatibility with other papermaking chemicals, Landercoll^® CMC empowers producers to achieve brighter, smoother, and stronger paper, meeting the most demanding requirements for printing and packaging grades.

✓ Superior film-forming & binding

✓ Excellent water retention

✓ Enhanced brightness & smoothness

✓ Optimized rheological control

Premium Quality

100% Pure CMC

Multi Functional

Main Functions

Main Functions of CMC in Papermaking

Surface Sizing – Strength, Smoothness, and Printability

▸ Rheology & Film Formation

Regulates viscosity for uniform coating layer formation.

▸ Pore Sealing & Barrier Improvement

Reduces surface porosity, enhancing oil, ink, and water resistance.

▸ Brightness & Gloss

Contributes to improved optical properties and smooth surface appearance.

▸ Stiffness & Curl Control

Prevents deformation, enhances sheet rigidity, and ensures consistent lay-flat properties.

▸ Surface Strength

Reinforces fiber bonding and abrasion resistance, reducing linting, dusting, and surface picking during printing.

Pulp Additive – Enhanced Fiber Bonding and Strength

• Acts as a wet‑end retention and bonding aid, improving the interaction between cellulose fibers.
• Increases dry and wet strength, ensuring better sheet formation and internal cohesion.
• Enhances fiber residence time and drainage behavior for higher process stability.

Pigment & Paper Coating – Texture and Optical Balance

• Improves dispersion stability of pigments and fillers, reducing aggregation or streaking.
• Provides ideal rheology for high‑speed coating operations, optimizing coater performance.
• Enhances color strength, opacity, and surface smoothness, producing a uniform, glossy finish.
• Reduces coating dust and improves printing precision and ink hold‑out performance.

Suggested Dosage:

0.3 – 1.5 % (based on dry weight), adjustable according to formulation and process requirements.

Applications

Applications of Landercoll^® CMC in Papermaking

Application Area	Processing Role	Benefits
Surface Sizing	Thickener, Film Former	Improves gloss, smoothness, and printability; enhances barrier resistance
Pigment Coating	Rheology Modifier, Dispersant	Promotes pigment distribution; enhances color uniformity and finishing quality
Pulp Processing	Strength Agent, Retention Aid	Strengthens sheet formation, improves fiber bonding, and increases wet strength
Printing & Packaging Paper	Functional Additive	Enhances print clarity, durability, and mechanical performance

Key Advantages

Key Advantages of Landercoll^® CMC for Papermaking

Enhanced Paper Quality

• Improved brightness, surface gloss, and tactile smoothness.
• Controlled surface porosity yields superior print resolution and smoother ink absorption.

Improved Print Performance

• Reduces printing dust, mottling, and ink feathering.
• Facilitates sharper edges and uniform color density for offset and digital printing.

Optimized Process Efficiency

• Easy dispersion in water—no lumping during makeup.
• Stable viscosity over broad shear and pH conditions.
• Enhances coating machine runnability and reduces downtime.

Mechanical & Structural Benefits

• Increases fiber network strength, reducing sheet breaks.
• Prevents curl and improves dimensional stability in multilayer papers.

Environmentally Responsible

• Derived from natural cellulose feedstock.
• Non‑toxic, biodegradable, and fully REACH / RoHS compliant.
• Safe for food-contact and eco-labeled paper grades.

Technical Data

Technical Highlights

Appearance	White to off‑white powder
Solubility	Completely soluble in water
pH (1% soln.)	6.0 – 8.5
Moisture Content	≤ 10 %
Functionality	Thickener, Binder, Rheology Modifier, Water‑Retention Agent
Compatibility	Excellent with starches, PVA, PAE, acrylics, and pigment coating binders
Application Range	Surface sizing, pigment coating, pulp treatment, specialty grades
Environmental Profile	Renewable, biodegradable, eco‑safe production process

All technical data are typical values and may vary depending on specific grade and application requirements. Contact our technical team for detailed specifications.

✓

Premium CMC Grade

ISO Certified

Eco-Friendly

REACH Compliant

Performance Mechanism

Performance Mechanism – How Landercoll^® CMC Works

At molecular level

Hydrophilic chains of CMC form hydrogen bonds with cellulose fibers and pigments, building a stable network that reinforces the coating and fiber matrix.

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In film formation

The polymer forms a flexible layer that locks pigments and fibers uniformly, increasing surface integrity.

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During drying

Water retention prolongs working time, allowing controlled drying and preventing film cracks.

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In printing

The smooth polymer surface promotes even ink transfer, resulting in brighter image contrast.

Processing Guide

Processing & Handling

Preparation

Add CMC slowly to cold or warm water under agitation.

Mixing Time

Continue stirring until fully dissolved (15–30 min).

Compatibility

Can be used with starch sizing agents, PVA, or synthetic binders.

Storage

Keep in cool, dry, ventilated conditions; avoid moisture absorption.

Packaging

25 kg multilayer paper bags with inner PE liner; shelf life 24 months.

Important Note:

Always follow proper handling procedures and refer to the product's Safety Data Sheet (SDS) for detailed safety information. For optimal results, consult with our technical team for application-specific recommendations.

Partnership

Why Partner with LANDU

Expertise in Cellulose Ether Technology

Over two decades of experience in papermaking additives.

Advanced Production Facilities

MVR & DCS‑controlled systems ensure uniform quality and customizable viscosity.

Comprehensive Document Support

TDS, COA, MSDS, and regulatory compliance certificates available.

Technical Collaboration

Application testing and customized formulation support.

Global Presence

Trusted supplier in 60+ countries, serving leading paper and packaging manufacturers.

20+ Years

60+ Countries

FREE Sample

✓

Quality Assured

Sample Request

Request Samples & Technical Support

Enhance the strength, printability, and surface finish of your paper products with Landercoll^® CMC.

Free sample for performance evaluation

Technical guidance on dosage and blending

Tailored solutions for coating, sizing, and pulp improvement

Contact LANDU Today

Request your free sample and experience the next generation of papermaking additives.

Get Free Sample

Sales@landu-china.com

+86 150 693 53616

Landercoll® Carboxymethyl Cellulose (CMC) for Papermaking