What Is Carbonless Paper?

Carbonless paper, also known as NCR paper, is a pressure-sensitive specialty paper used to create duplicate or multiple copies without conventional carbon paper. It is commonly used for invoices, delivery notes, receipts, business forms, bank documents, logistics documents, warehouse records, and multi-part computer forms.

How Does Carbonless Paper Work?

A typical carbonless paper set contains different coated sheets.

CB — Coated Back

CB paper contains microcapsules on the back surface. These microcapsules contain a color-forming material. When pressure is applied, selected capsules rupture.

CF — Coated Front

CF paper contains a color developer coating on the front surface. When the color-forming material released from the CB layer contacts the CF coating, a visible image develops.

CFB — Coated Front and Back

CFB paper contains both coating functions. The front side receives the image from the sheet above, while the back side transfers information to the sheet below.

What Chemicals Are Used in Carbonless Paper?

Two of the most important chemical systems are microcapsules and color developers.

Microcapsules

Important properties may include capsule size distribution, solid content, pressure sensitivity, coating stability, image density, and storage stability.

Color Developer

The color developer is applied to the receiving surface of the NCR paper. When the released dye precursor contacts the developer, a colored image forms. A good developer system should provide suitable image speed, image density, coating compatibility, and production stability.

How Is NCR Paper Manufactured?

A simplified process is: Base Paper → Chemical Preparation → CB/CF/CFB Coating → Drying → Finishing → Rewinding → Slitting → Packaging.

Why Is Coating Technology Important?

Carbonless paper manufacturing requires precise control of coating weight, coating viscosity, web tension, drying temperature, machine speed, surface uniformity, moisture, and chemical stability.

Equipment Required for Carbonless Paper Production

A complete NCR paper production line may include chemical preparation tanks, mixing system, coating machine, drying system, rewinding equipment, slitting equipment, laboratory testing equipment, and packaging equipment.

How to Choose an NCR Paper Coating Machine

Manufacturers should consider required paper width, target annual capacity, NCR grades to be produced, local chemical preparation requirements, and whether a complete turnkey project is needed.

How Can Manufacturers Improve NCR Paper Quality?

Stable NCR paper production requires coordination between paper, chemicals, equipment, and process. Key areas include microcapsule quality, developer performance, coating uniformity, drying control, and base paper quality.

Complete Carbonless Paper Production Solutions

Qingdao Jieruixin Machinery and Technology Co., Ltd. provides equipment, chemicals, and technical solutions for specialty paper manufacturing.

Our carbonless paper solutions can include NCR paper coating machines, microcapsule products, resin color developers, coating chemical systems, CB/CFB/CF production solutions, rewinding and slitting equipment, complete turnkey project planning, installation, and commissioning support.

With more than 20 years of industry experience, we support customers in developing specialty paper production projects for different markets.

FAQ

What is the difference between CB, CFB, and CF carbonless paper?

CB is coated on the back with the microcapsule system. CF is coated on the front with the developer system. CFB has functional coatings on both sides and is normally used as an intermediate sheet in multi-part forms.

What are microcapsules used for in NCR paper?

Microcapsules contain the color-forming system. Under pressure, selected capsules rupture and release material that reacts with the developer coating to create a visible image.

What is a color developer for carbonless paper?

A color developer is a functional coating material that reacts with the color-forming material released from microcapsules, producing the visible copy.

What equipment is needed to manufacture NCR paper?

A typical project requires chemical preparation equipment, coating machinery, drying equipment, rewinding and slitting systems, laboratory equipment, and related production utilities.

Can a complete NCR paper factory be supplied as a turnkey project?

Yes. A turnkey solution can integrate production equipment, coating chemicals, process design, installation, commissioning, operator training, and technical support.

Planning to Produce Carbonless Paper?

Qingdao Jieruixin Machinery and Technology Co., Ltd. can provide customized solutions covering NCR paper coating machinery, microcapsules, color developers, finished carbonless paper, and complete production line projects.

Contact us with your required paper width, GSM, production capacity, and finished product specifications to receive a customized technical proposal and quotation.