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-formirajočih, zgostitev, binding, in 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.

Aplikacije

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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.

Tehnični podatki

Technical Highlights

Videz	White to off‑white powder
Topnost	Completely soluble in water
pH (1% soln.)	6,0 – 8,5
Vsebnost vlage	≤ 10 %
Functionality	Thickener, Binder, Rheology Modifier, Water‑Retention Agent
Združljivost	Excellent with starches, PVA, PAE, acrylics, and pigment coating binders
Obseg uporabe	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 certificirano

Ekološko prijazno

REACH Compliant

Performance Mechanism

Performance Mechanism – How Landercoll^® CMC Works

At molecular level

Hidrofilične verige CMC tvorijo vodikove vezi s celuloznimi vlakni in pigmenti, s čimer tvorijo stabilno mrežo, ki okrepijo prevleko in matrico vlaken.

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V tvorbi filma

Polimer tvori prilagodljiv sloj, ki enakomerno zaklepa pigmentne in vlaknaste delce, s čimer povečuje celovitost površine.

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Med sušenjem

Zadrževanje vode podaljšuje čas delovanja, omogoča nadzorovano sušenje in preprečuje razpoke filma.

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Tiskanje

Gladka površina polimera spodbuja enakomerno prenos barve, kar povzroča svetlejši kontrast slike.

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).

Združljivost

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.