Duplex Board

Duplex Board with Grey Back for Printing and Carton Packaging

Duplex board with grey back is a coated paperboard with a smooth white surface on one side and a grey reverse side on the other. It is mainly used for cartons, printed packaging, book covers, and graphic applications that require a clean printing surface with practical board strength. Common basis weights range from 240gsm to 450gsm, making it suitable for a wide variety of packaging and printing uses.

What Is Duplex Board Used For?

Duplex board is widely used for folding cartons and retail packaging because the white coated face supports clear printing, while the grey back keeps the board structure economical and stable. It is suitable for shoe boxes, toy boxes, cosmetic cartons, detergent boxes, book covers, notebook covers, and other printed boxes that need both presentation quality and reliable converting performance.

For many printed packaging products, only the outer side needs a bright and smooth printing surface. Duplex board meets this need by combining a coated white top layer with a grey back, giving a practical balance of printability, stiffness, and cost control. This is one reason it remains a common choice for everyday carton production and commercial packaging.

Main Features of Duplex Board

Duplex board is valued for its strong overall usability in printing and packaging. Important features include:

• Coated white surface for sharp graphics and clean printing

• Grey back for efficient material structure

• Available grammages from 240gsm to 450gsm

• Common options including 250gsm, 300gsm, 350gsm, 400gsm, and 450gsm

• Supplied in sheet or roll form

• Suitable for regular packaging production and custom sizing

• Mixed pulp construction with recycled fiber content

These characteristics make duplex board suitable for packaging lines that require smooth printing, die-cutting, folding, and carton forming. Lighter weights are often used for smaller cartons and secondary packaging, while higher grammage options provide more body and support for stronger box structures.

Common Duplex Board Options

Grey back duplex board is one of the most widely used grades for carton manufacturing. It is chosen for printed packaging where the inside of the box does not need a white finish. Coated duplex board is preferred when surface smoothness and print quality are especially important for branding and shelf presentation. 300gsm duplex board is a popular middle-range option because it offers a practical combination of rigidity, print performance, and converting efficiency.

Because different products require different board strength, duplex board is available in several basis weights. Lower gsm grades can support lighter packaging needs, while heavier grades are more suitable for products that need extra stiffness and better crush resistance during transport and stacking.

Why Duplex Board Is a Practical Choice

Duplex board remains popular because it is simple, effective, and versatile. The white coated face helps improve the final print effect, making packaging look cleaner and more professional. The grey back keeps the material practical for large-volume box production. With options in both rolls and sheets, it can be adapted to different printing, laminating, and converting processes. Lead times are commonly listed at 10 to 15 days, with standard container-based supply for regular orders.

For printed cartons, consumer goods boxes, publishing covers, and daily-use packaging, duplex board continues to be a reliable paperboard solution that balances appearance and performance. It works especially well for packaging projects that need a coated printing side, solid board structure, and flexible grammage options in one material.

FAQ

What is duplex board with grey back?

Duplex board with grey back is a coated paperboard with a white printable surface on one side and a grey reverse side on the other. It is commonly used for cartons, book covers, and printed packaging.

What grammage is available for duplex board?

Common grammages include 240gsm, 250gsm, 290gsm, 300gsm, 340gsm, 350gsm, 400gsm, and 450gsm.

What is duplex board mainly used for?

It is mainly used for folding cartons, retail packaging, detergent boxes, cosmetic packaging, paperback covers, notebook covers, and similar printed paperboard products.

Is duplex board available in sheets and rolls?

Yes. Duplex board is available in both sheet and roll packaging formats.