Duplex Board

About Duplex Board

Duplex board is a multi-layer paperboard consisting of two or more layers of pulp — typically a bright white clay-coated front surface for printing, and a grey or white back surface for structural support. The term "duplex" literally refers to this two-faced construction.

It is manufactured from recycled or virgin fibre, and is the primary substrate for folding cartons and packaging boxes across virtually every consumer goods category — from pharmaceutical blister packs and FMCG cartons to cosmetics packaging and electronics boxes.

Sapphox Ventures supplies duplex board in both Grey-Back (GD/LWC) and White-Back (WB/HWC) variants, sourced from established Indian board mills. Custom GSM, caliper, and sheet sizes available for bulk orders.

Key Features

• Excellent Printability: Bright white clay-coated surface delivers sharp, vibrant print results across offset, flexo, digital, and screen printing methods.
• High Stiffness & Rigidity: Multi-layer construction provides structural integrity for product protection during transit and shelf display.
• Consistent Caliper: Uniform thickness across the sheet ensures smooth die-cutting, creasing, and folding on automated packaging lines.
• Food-Grade Options: FDA/EU compliant grades available for direct and indirect food-contact packaging applications.
• Moisture Control: Controlled moisture content (7 ± 2%) prevents warping, curling, and delamination during storage.
• Cost Effective: Economical packaging solution at high volumes without compromising print quality or structural performance.

Applications