Glossy One Side White Coated Duplex Board 200gsm To 450gsm Grey Back Packaging Grade
Duplex board, commonly referred to as white board, powder board, grey-back white board, or grey copper in regional terminology, is a coated paperboard material featuring a grey reverse side and a white coated front surface. Primarily used for printing and packaging applications, this versatile board delivers reliable performance across a wide range of converting and end-use scenarios.
Our glossy coated duplex board utilizes kaolinite as the coating material, creating a smooth, reflective surface that enhances print quality and visual appeal. Manufactured from recycled pulp, this cost-effective board combines high stiffness, wear resistance, and excellent surface smoothness for demanding packaging applications.
Available in grammages from 200gsm to 450gsm and offered in both Grade A and Grade B quality levels, this duplex board supports diverse project requirements from standard packaging to premium presentation products.
Product Specifications
| Product Name |
One Side White Glossy Coated Duplex Board with Grey Back |
| Alternative Names |
Duplex paper, cardboard, couche white back gray |
| Available Grammages |
200g, 230g, 250g, 300g, 350g, 400g, 450g |
| Quality Grades |
Grade A, Grade B |
| Coating Material |
Kaolinite |
| Construction |
White coated front surface, grey back |
| Raw Material |
Recycled Pulp |
| Standard Widths |
787mm, 889mm, 1092mm, 1194mm (customizable) |
| Packaging Formats |
Rolls, Sheets |
| Printing Compatibility |
Offset printing |
| Surface Properties |
High stiffness, wear resistance, smooth surface, no warping deformation |
| Surface Quality |
Paper surface smooth, neat appearance, free from streaks, spots, and other paper defects |
| ODM / OEM Service |
Available |
| Certifications |
ISO9001, ISO14001, SGS |
| Payment Terms |
T/T |
Technical Specifications by Grade
| Property |
Grade |
230gsm |
250gsm |
300gsm |
350gsm |
450gsm |
| Grammage (gsm) |
Grade A |
220-241 |
242-260 |
290-315 |
336-365 |
428-465 |
| Grade B |
±5% tolerance |
±5% tolerance |
±5% tolerance |
±5% tolerance |
±5% tolerance |
| Thickness (μm) |
Grade A |
280±5 |
305±5 |
365±5 |
430±5 |
550±5 |
| Grade B |
≥260 |
≥285 |
≥340 |
≥405 |
≥525 |
| Moisture (%) |
Grade A |
7.0±1.5 |
7.5±1.5 |
7.8±1.5 |
8.0±1.5 |
8.0±1.5 |
| Grade B |
7.0±2.0 |
7.5±2.0 |
7.8±2.0 |
8.0±2.0 |
8.0±2.0 |
| Stiffness (g*cm) |
Grade A |
13/26 |
15/30 |
35/70 |
55/110 |
85/150 |
| Grade B |
13/26 |
13/26 |
30/50 |
45/100 |
75/150 |
Key Performance Features
Smooth Premium Surface
The kaolinite coating delivers exceptional surface smoothness with a neat, uniform appearance free from streaks, spots, and other common paper defects.
Excellent Printability
Optimized for offset printing, the coated surface produces sharp, consistent print results with excellent ink holdout and color reproduction.
High Structural Stiffness
Superior rigidity ensures boxes and structural packaging maintains its shape and integrity under stacking and handling conditions.
Warp Resistant
Engineered to resist warping and deformation, the board stays flat and dimensionally stable through printing, converting, and end use.
Wear Resistant
Durable surface and construction withstands abrasion and handling throughout the product lifecycle.
Dual Grade Options
Both Grade A and Grade B options available to match specific quality requirements and budget considerations.
Applications
This duplex board serves a broad range of printing and packaging applications. Common uses include paper book covers, packing boxes, gift boxes, certificates, menus, monthly calendars, and postal postcards. The combination of printable white surface and economical recycled construction makes it suitable for both functional packaging and presentation materials.
Order and Logistics Details
Production lead time ranges from ten to twenty-five working days after deposit receipt. Standard size orders typically ship within ten days when inventory is available.
Trade terms include ex-work, FOB, and CIF options to accommodate different shipping preferences.
Sample policy provides complimentary A4 size sheets for quality evaluation. Larger sheet or roll samples can be arranged upon request with applicable sample fees.
Container loading capacity ranges from thirteen to fifteen tons for twenty-foot containers and twenty-three to twenty-five tons for forty-foot containers.
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