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 formación de película, capacidad de espesamiento, binding, y 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.

Aplicaciones

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Key Advantages

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• 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.

Datos Técnicos

Technical Highlights

Apariencia	White to off‑white powder
Solubility	Completely soluble in water
pH (1% soln.)	6.0 – 8.5
Contenido de humedad	≤ 10 %
Functionality	Thickener, Binder, Rheology Modifier, Water‑Retention Agent
Compatibilidad	Excellent with starches, PVA, PAE, acrylics, and pigment coating binders
Rango de Aplicación	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

Certificado ISO

Ecológico

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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