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Duplex board, a versatile paperboard material, has become essential in modern packaging and printing industries. This laminated paper substrate features two distinct layers bonded together - typically a high-quality top layer and a coarser bottom layer - providing exceptional printability and structural integrity. With increasing demand in food packaging and premium consumer goods, understanding the technical specifications and advancements in duplex board is critical for manufacturers and packaging designers.
Leading manufacturer specializing in duplex board with grey back for international markets:
According to the International Corrugated Packaging Association, the global paperboard market is projected to reach $285 billion by 2027, with duplex board accounting for over 25% of food-grade packaging solutions. Technological innovations in coating processes have enabled enhanced moisture resistance and print fidelity, expanding applications across diverse industries.
Parameter | Range | Standards | Application |
---|---|---|---|
Basis Weight (GSM) | 230-450 g/mΒ² | ISO 536 | Light to heavy packaging |
Caliper (Thickness) | 250-600 ΞΌm | TAPPI T411 | Structural rigidity |
Brightness (Top Layer) | 80-95% ISO | ISO 2470 | Print quality |
Surface Smoothness | 1.5-3.0 ΞΌm | Bendtsen Method | Printability |
Tensile Strength (MD) | 4.0-10.0 kN/m | ISO 1924 | Packaging durability |
Stiffness (Bending) | 5-15 mN.m | TAPPI T566 | Structural support |
Duplex board is widely used in Packing and Printing industrial applications like: shoe box, food box, cake box, and cosmetic packaging. Our duplex board paper comes in white/gray back and white/white back options in both Lightweight Coated (LWC) and Heavyweight Coated (HWC) varieties.
The coated duplex board grey back variant provides excellent color reproduction with minimum 4-color process printing capabilities. Special barrier coatings can be applied for direct food contact, certified to FDA and EU food safety standards.
Duplex board food packaging requires specific barrier properties to protect contents from moisture, grease, and aroma contamination. Our FDA-compliant solutions include:
The superior printability of both side printing photo paper grade duplex board enables high-end applications:
The gray back variant utilizes recycled fibers in the base layer, offering a cost-effective solution where backside appearance isn't critical. White back uses premium bleached fibers throughout for applications requiring printing on both sides or maximum brightness.
Higher GSM values (350-450 g/mΒ²) provide superior structural rigidity needed for stacking strength in shipping container111s, while lower GSM (230-300 g/mΒ²) offers flexibility for intricate folding operations in retail packaging.
FDA-compliant barrier coatings include polyethylene extrusion for moisture resistance, EVOH coatings for aroma barrier properties, and fluorochemical treatments for grease resistance in food service applications.
Offset lithography delivers the highest image quality for photographic reproduction, while flexographic printing is preferred for large-run packaging. Digital UV printing provides exceptional results for short-run specialty packaging.
While SBB offers slightly better formation uniformity, modern duplex board achieves comparable print results at 15-20% lower cost while utilizing recycled fiber content.
Key certifications include FDA 21 CFR 176.170, EU Regulation 1935/2004, BfR XXXVI for Germany, and IS 15495 for India. Migration limits for heavy metals are defined under EN 14338.
Optimal moisture content (5.5-7.5%) is maintained through humidity-controlled environments and inline moisture sensors during calendaring to prevent warping and maintain dimensional stability.
Leading duplex board paper manufacturers are driving sustainability improvements:
The duplex paper stock produced by XINGTAI SHINEWAY contains up to 85% post-consumer recycled content while maintaining print performance through advanced deinking and refining processes. Our grey back variants further conserve resources by optimizing the ratio of virgin to recycled fibers without compromising performance.
The global duplex board market shows strong growth projections:
For technical specifications sheets, sample requests, or custom duplex board solutions:
Contact XINGTAI SHINEWAYπ XINGTAI CITY, HEBEI PROVINCE, CHINA | π 0319-5914900 | βοΈ 441835323@qq.com